Specific embodiment
Realize that higher levels of descending liquid body is residual the present invention relates to a kind of liquid film that reduction is formed between the fiber of non-woven fabricsIt stays, and improves the non-woven fabrics of the resistant to liquids mobility on surface.
There are the regions that fibrous septum is narrow in non-woven fabrics used in surficial sheets etc..Even if in the presence of can make in the regionDischarged liquid (such as urine, menses.Also referred to as liquid) penetrate space, also due to interfibrous meniscus, by blood plasma eggThe surface viscosity of white bring surface-active or blood is high, and stable liquid film is formed between fiber, to be easy Liquid ResidueBody.Existing technology can not fully eliminate liquid film, and dry-ness there is still room for improvement.In turn, in recent years, in addition to it is dry-ness withOutside, consumer also requires skin sense of touch good.For this purpose, using thinner fiber.However, if using thinner fiber, fiberInterval becomes narrower.It is more prone to produce interfibrous liquid film as a result, and liquid film becomes to be not easily broken, is more easy Liquid ResidueBody.
In addition, this is not limited to absorb the case where object liquid is blood.For example, also having surface living in urine because of phosphatideProperty, therefore generate liquid film as described above and liquid is caused to remain, as a result, dry-ness, there is still room for improvement.
Like this, it is desirable that the technology for the liquid film removal for forming the narrow part in the fibrous septum in non-woven fabrics.However,Since the stability of liquid film is high, so be difficult to remove liquid film.In addition, it is also considered that be coated with water-soluble surfactant to reduce liquidThe surface tension of body and remove liquid film.However, if it is desired to such surfactant is used for absorbent commodity and can be realized liquidThe removal of film, then liquid is also possible to the back sheet leakage through liquidproof.
In addition, the surface of non-woven fabrics needs that liquid is made to be easily accessible fibre from the viewpoint of the liquid permeability of non-woven fabricsAppropriate hydrophily between dimension.If the hydrophily of nonwoven surface is too low, non-woven fabrics is first generated before liquid enters between fiberA possibility that liquid flowing on surface, gets higher.
Non-woven fabrics of the invention can reduce the liquid film formed between the fiber of non-woven fabrics and realize higher levels of descending liquidBody residual, and improve the resistant to liquids mobility on surface.
As the preferred embodiment of non-woven fabrics of the invention, such as non-woven fabrics 5 as shown in Figure 1 can be enumerated.It needsBright, non-woven fabrics of the invention can be applied to various articles related with liquid absorption, can be used, for example, as sanitary napkin,The surficial sheets of the absorbent commodities such as hippen, adult diaper.
Non-woven fabrics 5 nonwoven surface have comprising liquid film cracking agent containing portion 6 and without the cracking agent of above-mentioned liquid filmIt is non-to contain portion 7.Be formed as round (dotted) containing portion 6.It is circular be arranged with being spaced from each other containing portion 6 it is multiple.The arrangement is excellentIt is selected as the arrangement of the multiple directions along the intersection in nonwoven surface.The multiple directions of above-mentioned intersection more preferably include non-woven fabricsFirst direction and the second direction orthogonal with the first direction.Above-mentioned first direction and second direction are particularly preferably nonwovenThe length direction and width direction (i.e. the length direction and width direction of absorbent commodity) of cloth former material.In the present embodiment,It is circular containing portion 6 nonwoven surface along non-woven fabrics 5 length direction (Y-direction) and width direction (X-direction) the twoDirection be spaced from each other in a plurality of directions dispersed arrangement have it is multiple.It is non-containing portion 7 with it is multiple adjacent containing portion 6 and make containingThe mode that portion 6 is separated from each other continuously extends and arranges.Specifically, in nonwoven surface, with following sea-island figureCase is arranged, which is to be spaced from each other ground in the continuous non-region containing portion 7 containing portion 6 with islandMade of configuration.It should be noted that may be present in the surface whole face of non-woven fabrics 5 containing portion 6 and the non-arrangement containing portion 7,It can reside in a part (also identical in various forms below) on surface.
For the above-mentioned arrangement in present embodiment, it is illustrated in more details.
It is arranged in the either rank containing portion 6 in the longitudinal direction, fixed (spacing will be set as containing the spacing between portion 6,6P1).But each other for adjacent column, by containing portion 6 in width direction (X-direction) it is non-conterminous in a manner of, be set as arranging wholeThe configuration of body half of spacing that is respectively staggered mutual in the longitudinal direction.On the other hand, the column adjacent for 2 each other, be set as containingThe configuration of portion 6 in the direction of the width side by side.At this point, in 2 adjacent mutual width directions of column side by side containing between portion 6,6Spacing P2 is considered as identical as the spacing P1 in the column of above-mentioned length direction.That is, it is whole as non-woven fabrics 5, with containing for length directionThere is the spacing P1 in portion 6 mode identical with the spacing P2 containing portion 6 of width direction to be periodically arranged.
The result of above-mentioned periodic arrangement is, containing portion 6 while being arranged on length direction and width direction, also withIt is arranged on 2 the inclined directions D1 and D2 that length direction and width direction are intersected.That is, containing portion 6 in non-woven fabrics 5Be spaced from each other at least four direction of nonwoven surface ground periodic arrangement have it is multiple.
It should be noted that above-mentioned length direction (Y-direction) is as its name implies, refer to that the length of non-woven fabrics is relatively longDirection refer to when being rolled out when web-like is made as former material in non-woven fabrics or from the state of web-like by the nonwoven fabric rollDirection out.Above-mentioned width direction (X-direction) is the direction orthogonal with above-mentioned length direction, in the state of above-mentioned former material, isRefer to spool direction.In addition, in the situation of the differently- oriented directivity of the known fiber for constituting non-woven fabrics, it may be said that the differently- oriented directivity of fiberFor length direction.At this point it suffices to say that above-mentioned width direction is the direction orthogonal with the differently- oriented directivity of fiber.
In addition, above-mentioned length direction is that machinery moves out direction (MD:Machine in the fabrication stage of non-woven fabricsDirection).Above-mentioned width direction be in the fabrication stage of non-woven fabrics with machinery move out the orthogonal width direction in direction (CD:Cross Direction)。
In turn, when non-woven fabrics to be cut out to the surficial sheets for predetermined size and as absorbent commodity, the non-woven fabricsLength direction is and the consistent direction of the length direction of above-mentioned absorbent commodity.
Containing portion 6 and it is non-containing portion 7 according to whether there is or not liquid film cracking agent to distinguish.It should be noted that in Fig. 1,In order to understand containing portion 6 and the non-configuring area containing portion 7 and configuration pattern, indicate decorative pattern is enclosed containing portion 6, but practicalOn, it may not can be by visually being distinguished (hereinafter, identical in Fig. 2~6).
Therefore, it is above-mentioned containing portion 6 and the non-differentiation containing portion 7 not by visual, but carried out by the following methodConfirmation.That is, the acrylic board of thickness 4mm is loaded after oil-Absorbing Sheets to be placed in the surface of non-woven fabrics 5, from thereon with weight to become600g/cm2Mode load 30 seconds.After applying load, the oil-Absorbing Sheets are removed immediately, which is placed in the lining of blackOn paper, the variation of color is visually confirmed.The changed part of color is to contain portion 6 comprising liquid film cracking agent, removes thisContain portion 7 to be non-in part in addition.As above-mentioned oil-Absorbing Sheets, various oil-Absorbing Sheets can be used, such as Katani Sangyo can be enumeratedThe goldleaf of company's manufacture beats method oil-Absorbing Sheets made of paper.
The confirmation method of above-mentioned differentiation is also identical in various arrangement forms below, in width direction containing portion 6Length, the measurement of the non-length containing portion 7, in the measurement of total area containing portion 6 and non-total area containing portion 7,It is used in the same manner oil-Absorbing Sheets.
Refer to containing the cracking agent of liquid film contained by portion 6: connecing the discharged liquids such as liquid, the high viscosity liquid such as menses, urineTouch non-woven fabrics and between the fiber of non-woven fabrics and/or fiber surface formed liquid film cracking or inhibit liquid film forming preparation,Have the function of making to be formed by liquid film cracking and hinders the effect of liquid film forming.It may be said that the former is main effect, the latterFor secondary effect.The cracking of liquid film is to make its destabilization by a part of the layer for pushing liquid film open of liquid film cracking agentIt acts on realizing.Cracked the effect of agent by the liquid film, liquid will not rest on the interfibrous narrow zone of non-woven fabrics andIt becomes easy and passes through.That is, becoming the excellent non-woven fabrics of liquid permeability.Even if the fiber for constituting non-woven fabrics is made to attenuate as a result,So that distance between fiber is narrowed, can also take into account the pliability and the remaining inhibition of liquid of skin sense of touch.
(property for making liquid film disappear)
There is the cracking agent of liquid film used in the present invention property for making liquid film disappear to be opened by the property by the liquid filmIn the case where splitting experimental liquid or the artificial urine that agent is applied to based on plasma composition, liquid film disappearing effect can be shown.PeopleWork urine is that will have 1.940 mass % of urea, 0.795 mass % of sodium chloride, 0.110 mass % of magnesium sulfate, 0.062 matter of calcium chlorideMeasure %, 0.197 mass % of potassium sulfate, 0.010 mass % of Amaranth (dyestuff), water (about 96.88 mass %) and the polyoxyethylene moonIt is product obtained by 53 ± 1mN/m (23 DEG C) that the mixture of osmanthus ether (about 0.07 mass %) this composition, which is adjusted to surface tension,.Liquid film disappearing effect said here includes the following two kinds effect: for being pressed from both sides by the liquid film formed by experimental liquid or artificial urineAeriferous structural body inhibits the effect of the liquid film forming of the structural body；And the effect for making the established structural body disappear,The preparation of at least one effect is shown it may be said that having the property that can show liquid film disappearing effect.
Above-mentioned experimental liquid is the liquid component for taking off fiber blood (Japanese BIOTEST company manufactures) by horse and extracting.It is specific andSpeech, if the horse of 100mL, which is taken off fiber blood, stands 1 hour under conditions of 22 DEG C of temperature, humidity 65%, which takes off fiber bloodWhen liquid is separated into the upper and lower, which is above-mentioned experimental liquid.Upper layer mainly includes plasma composition, and lower layer mainly includes that blood is thinBorn of the same parents' ingredient.Upper layer is only extracted in fiber blood in order to be taken off by the horse for being separated into the upper and lower, such as pipette (Japan can be usedMICRO Co., Ltd. manufacture).
Whether there is above-mentioned " property for making liquid film disappear " about certain preparation, can be judged as follows: easy production is madeThe liquid film that raw above-mentioned experimental liquid or artificial urine by as applying said preparation is formed carries the state of structural body obtained by air secretly,Judged according to the number of the amount of the structural body, i.e. liquid film at this time.That is, by the temperature of above-mentioned experimental liquid or artificial urine adjust to25 DEG C, later, 10g is added in screwed pipe (No.5, caliber 27mm, overall length 55mm that M Co., Ltd. aruemu is manufactured), is obtainedStandard sample.In addition, adding into sample identical with standard sample and adjusting in advance to 25 DEG C of measurement pair as measurement sampleSample is obtained as preparation 0.01g.Standard sample is shaken with measurement sample respectively along the up and down direction of above-mentioned screwed pipe stronglyAfter swinging 2 back and forth, promptly place in the horizontal plane.It is formed by the inside of screwed pipe of the oscillation of the sample after oscillationThe structural body layer comprising a large amount of structural bodies for not having the liquid level (lower layer) of above described structure and being formed on the liquid level(upper layer).From after rigid oscillation after 10 seconds, to the height of the structural body layers of two samples (to knot from the liquid level of liquid levelHeight until structure body layer upper surface) it is measured.Then, in the height of the structural body layer of measurement sample relative to standard sampleThe height of structural body layer reach in 90% situation below, be considered as measure object preparation and crack effect with liquid film.
The cracking agent of liquid film used in the present invention is to meet the single compound of above-mentioned property or will meet above-mentioned propertyThe single compound of matter combine it is two or more obtained by mixture or met by the combination of two or more compoundsState the preparation of property (liquid film cracking can be shown).That is, liquid film cracking agent is just limited to tool based on above-mentioned definitionThere is the preparation of liquid film cracking effect.It therefore, include not meet defined above the in the compound being applied in absorbent commodityIn ternary situation, distinguished with liquid film cracking agent.
It should be noted that crack agent and third ingredient about liquid film, " single compound " though it includes having the same for beingComposition formula, but the concept including the compound for causing molecular weight different because of number of repeat unit difference.
As liquid film crack agent, can by No. 2016/098796 specification of International Publication No. paragraph [0007]~[0186] it properly selects and uses in content documented by.
In the present invention, non-woven fabrics contain containing portion 6 or comprising liquid film cracking agent refer to that it is mainly attached to the table of fiberFace.But as long as liquid film cracking agent remains in the surface of fiber, can within packet be present in fibre in fiber, through interior addDimension is internal.It, can be with no particular limitation using usually used various as making the liquid film cracking agent method that is attached to fiber surfaceMethod.Such as it can enumerate: flexographic printing, ink jet printing, intaglio printing, silk-screen printing, spraying, bristle coating etc..These processingIt can be carried out after making fiber carry out fiber networking using various methods, thereafter, which can also be made non-woven fabricsAfterwards, it is set into after absorbent commodity and carries out again.The fiber that surface is attached with liquid film cracking agent is for example dry by hot wind blast typeMachine is dried with being sufficiently below the temperature (such as 120 DEG C or less) of fibre resin fusing point.In addition, stating attachment side in useWhen method makes liquid film cracking agent be attached to fiber, optionally it can be used made of making liquid film cracking agent dissolution in a solvent comprising liquidThe solution of film cracking agent, and/or emulsion, the dispersion liquid of liquid film cracking agent.
In order to make liquid film cracking agent of the invention, with following liquid film cracking effects, need to open liquid film in non-woven fabricsAgent is split to exist in the form of liquid when contacting body fluid.From this starting point, the fusing point of liquid film of the invention cracking agent is preferably40 DEG C or less, more preferably 35 DEG C or less.In addition, the fusing point of liquid film cracking agent of the invention be preferably -220 DEG C or more, it is more excellentIt is selected as -180 DEG C or more.
As described below, the surface tension of liquid film cracking agent is less than existing hydrophilic finishing agent used in non-woven fabrics fiberDeng.That is, the contact angle of the composition fiber containing portion 6 is greater than the contact angle of the non-composition fiber containing portion 7.Therefore, containing portion 6It constitutes fiber and is endowed sliding property and/or hydrophobicity because liquid film cracks agent, compared with the case where liquid film cracking agent is not present, mentionHeight is present in the sliding property of the liquid of nonwoven surface.Especially when surface is initially connected to liquid from dry and comfortable situation, it is easy to produceIt flows out on the surface of liquid.In contrast, non-not have liquid film cracking agent containing portion 7, inhibit liquid in non-woven fabrics 5 so havingThe effect of surface outflow.
In non-woven fabrics 5, the drop of discharged liquid or the liquid to trickle when dressing absorbent commodity along the body of wearerDuring surface flow after dripping when with non-woven fabrics first contacts or contact with non-woven fabrics in non-woven fabrics, understand across laying equal stress onBe stacked in includes liquid film cracking agent containing portion 6 and without the non-containing in 7 the two of portion of liquid film cracking agent.In such overlapping,For drop, at the same show the liquid film cracking role containing portion 6 and it is non-containing portion realized inhibit liquid flowingEffect.As a result, non-woven fabrics 5 inhibits the liquid of nonwoven surface to flow on one side, make to enter the liquid formed between fiber on one sideFilm cracking, improves the liquid permeability of thickness direction.Thereby, it is possible to realize and maintain the higher descending liquid body of non-woven fabrics 5 on one sideResidual improves the preventing property of surface flow of liquid on one side.It should be noted that effect and concrete example about liquid film cracking agentDetailed content is described hereinafter.
The preventing property of surface flow of aforesaid liquid is realized as follows: due to without liquid film cracking agent it is non-containing portion 7 multipleContinuously or discontinuously arranged on direction, thus the generation for inhibiting the liquid of nonwoven surface to flow, even and if generate liquid flowing,Also the resistant to liquids mobilization for preventing droplet flow from carrying out is played containing portion 7 in the non-of multiple directions by configuration.It needsBright, the above-mentioned non-continuous arrangement containing portion 7 refers to: on the surface of non-woven fabrics 5, the non-row without cut mark extended containing portion 7Column.It is preferred that as shown in Figure 1, by it is multiple be separated from each other containing portion 6 in a manner of continuously arrange.That is, preferably as described aboveAccording to sea-island-shaped pattern shape made of configuring with being spaced from each other containing portion 6 in the continuous non-region containing portion 7 with islandFormula is arranged.In addition, the above-mentioned non-interruption arrangement containing portion 7 refers to: what is be separated from each other multiple non-separatedly arranges containing portion 7Column.
Simultaneously as drop across and overlap comprising liquid film cracking agent containing portion 6 and without liquid film cracking agent it is non-Containing both portions 7, thus, equal liquid film cracks because of the effect of liquid film cracking agent between the fiber of non-woven fabrics 5, and liquid is to nonwovenThe permeability that cloth thickness direction penetrates improves.At this point, liquid film cracking agent has the spreadability to liquid as following, it is therefore, rightIn across containing portion 6 and it is non-exist containing 7 ground of portion and for the drop that is suppressed of liquid flowing, the liquid film cracking containing portion 6Agent is sprawled to non-containing portion 7.That is, the agent of liquid film cracking not only contains the liquid film for waiting narrow zones between the fiber in portion 6 followingOn sprawl (small sprawls), also can from it is be overlapped with drop containing portion 6 to it is non-widely sprawled containing portion 7 it is (largerSprawl).The liquid film cracking role described as follows of liquid film cracking agent is not only showed containing portion 6 as a result, also contains portion 7 non-Performance.I.e., it is intended that the spreadability of liquid film cracking agent itself can make up due to being limited to liquid film cracking agent containing portion 6 andThe reduction of caused liquid film cracking role, to keep the liquid film cracking role of the entirety of non-woven fabrics 5.In addition, being cracked using liquid filmAgent sprawls brought effect by making drop be trapped in certain area using above-mentioned resistant to liquids mobilization containing portion 7 to non-It is interior and more improve.
Like this, non-woven fabrics 5 can realize higher descending liquid body residual on one side, and the surface flow for improving liquid on one side preventsProperty.Make liquid to thickness side it should be noted that above-mentioned resistant to liquids mobilization is opened when liquid is initially contacted with non-woven fabrics 5It is particularly effective in terms of the transparent liquid access of transmission.That is, in the initial stage that nonwoven surface is not drenched by liquid, becauseBy the hydrophobicity for the fiber surface that liquid film cracking agent generates, liquid is not easily accessible between fiber and liquid is easy to cause to flow, therefore,Above-mentioned resistant to liquids mobilization can provide drop into the interfibrous time.On the other hand, primary in penetration by liquid non-woven fabrics andIn the state of ensuring transparent liquid access, liquid is easily accessible between fiber, is more strongly played the liquid film based on liquid film cracking agent and is openedSplit effect.
Liquid film cracking agent from being spread over containing portion 6 to non-biggish containing portion 7 in the case that drop is menses etc. moreIt is easy to produce.Therefore, using the descending liquid body that above-mentioned biggish spreadability is realized remain in using non-woven fabrics of the invention asIt can particularly effectively be played when the surficial sheets of sanitary napkin.
Liquid film crack agent from containing portion 6 to the degree of the non-biggish spreadability containing portion 7 by it is various will be because being determined.For example, following spreading coefficients are bigger, then the distance of sprawling in drop becomes longer, indicates that spreadability is higher.In addition, containing portionIn 6 liquid film cracking agent containing base weight it is bigger, then the distance of sprawling in drop becomes longer, indicate spreadability it is higher.
Similarly, liquid film cracking agent shows the appropriate high spreadability to drop by moderately inhibition viscosity.ToolFor body, liquid film crack agent viscosity be 0cps or more, preferably 10000cps hereinafter, more preferably 1000cps hereinafter, into oneStep is preferably 200cps or less.It should be noted that the unit cps of viscosity passes through 1cps=1 × 10-3Pas converts.
(measuring method of the viscosity of liquid film cracking agent)
The liquid viscosity of liquid film cracking agent can be measured by the following method.
Firstly, preparing liquid film cracking agent 40g.Secondly, using tuning-fork-type vibrating type viscometer SV-10 (manufacture of A&D company),25 DEG C of temperature, relative humidity (RH) 65% environmental area in liquid film cracking agent viscosity be measured.The measurement is anti-It carries out 3 times again, using average value as viscosity.It should be noted that being heated to liquid when liquid film cracking agent is the situation of solidFilm cracking agent+5 DEG C of fusing point and make its phase transition liquid, and under the conditions of the temperature directly implement measure.
It should be noted that passing through following spreading coefficients etc. when being measured to the liquid film cracking agent for being attached to fiberMeasurement used in method, from fiber extract liquid film crack agent.In the situation, it is only capable of extracting for said determinationWhen less amount of situation, with the measurement of following spreading coefficients etc. the case where is same to be identified.
In the present invention, flowed as long as the above-mentioned liquid by resistant to liquids mobilization bring nonwoven surface can be taken into accountPrevent effect and by the descending liquid body residual effect in liquid film cracking role bring non-woven fabrics, then can also by it is non-containing portion 7 and simultaneouslyIt is non-to be arranged with being spaced from each other containing portion 6.Furthermore it is also possible to non-will be arranged containing portion 6 and with being each spaced apart by containing both portions 7.That is,It arranges with being spaced from each other containing portion 6 and the non-at least either containing in portion 7 in nonwoven surface multiple.In any situationWhen, non-be adjacent to containing portion 7 containing portion 6 and configure.
Containing portion 6 and non-containing in portion 7, when will only be arranged with being spaced from each other containing portion 6, as shown in Figure 1, preferably containingSea-island configuration the pattern for thering is portion 6 to configure with being spaced from each other in the continuous non-configuring area containing portion 7 with island.OnlyIt is non-when being arranged with being spaced from each other containing portion 7, it is preferably non-containing portion 7 in the configuring area continuously containing portion 6 with island phaseThe sea mutually separatedly configured-island configuration pattern.It as only non-containing the form spaced apart from each other of portion 7, such as can enumerate: in Fig. 1Shown in arrangement in, contain portion 6 and the non-form etc. to alternate containing portion 7.
Although can be any of the above-described kind of situation, containing portion 6 continuous non-containing arranging with being spaced from each other in portion 7Sea-island configuration pattern aforesaid liquid flow effect is higher, so it is preferred that.
In addition, what is separated is each other or non-containing between the mutual arrangement in portion 7 containing portion 6 in above-mentioned sea-island configuration patternAway from and arrangement pattern can arbitrarily be set in the range of not inhibiting above-mentioned 2 kinds of effects.
It is above-mentioned configure with being spaced from each other be not limited to shown in above-mentioned Fig. 1 containing portion 6 or the non-flat shape containing portion 7Circle, various shape can be set as.Such as it can enumerate: similar to shapes of various figures such as rectangles, by the void with defined widthThe shape etc. that line or wave, curve are formed.In addition, can also be made whole by separating containing portion 6 or the non-arrangement containing portion 7Body becomes geometry decorative pattern etc..
Such as can enumerate: such as Fig. 2 (A), in nonwoven surface, class is rhomboid to be connected containing portion 6 along multiple directionsIt renews and stretches and be formed as the non-containing arranging multiple patterns with being spaced from each other in portion 7 of clathrate.In addition, can enumerate: such as Fig. 2(B) as, in nonwoven surface, class is rhomboid non-to be formed as clathrate being extended continuously along multiple directions containing portion 7Containing arranging multiple patterns etc. with being spaced from each other in portion 6.In addition, for example, can will containing portion 6 be set as wave and make its everyBeginning to rehearse, it is multiple to arrange, and will contain between portion 6 and contain portion 7 as non-.Alternatively, it is also possible to be set as of different sizes more containing portion 6A elliptical shape arranges it with being spaced from each other with concentric circles, and will contain between portion 6 and contain portion 7 as non-.In these shapesIn state, or arrangement made of portion 6 and the non-change containing portion 7 will be contained.In addition, also may include geometry shape containing portion 6The a plurality of line of shape, and containing between portion 6 as non-containing portion, non-also may include a plurality of line of geometry shape containing portion 7, and non-Contain portion 6 containing being used as between portion 7.
As long as the direction for being spaced from each other arrangement can be as in the present embodiment in addition, playing above-mentioned 2 kinds of effectsThe multiple directions of nonwoven surface, or 1 direction.Wherein, since the outflow of drop may be in each of nonwoven surfaceIt is generated on a direction, so preferably arranged to the multiple directions of intersection.In addition, about the orientation, from applyingThe viewpoint that the liquid tight sealed engagement (anti-leakage) of absorbent commodity is improved when surficial sheets of the non-woven fabrics 5 as absorbent commodity goes outHair more preferably at least includes the length direction and width direction of non-woven fabrics.
For example, the form that the direction as being spaced from each other arranged is only made of 1 direction, can enumerate Fig. 3 (A) and (B)Shown in concrete example etc..In the form shown in Fig. 3 (A), non- prolong in the longitudinal direction containing portion 6 and zonally containing portion 7It stretches, and band-like non-is alternately arranged containing portion 6 and in the direction of the width containing portion 7.In addition, the form shown in Fig. 3 (B)In, it is extended in the direction of the width containing portion 6 and it is non-containing portion 7 band be mutually alternately arranged in the longitudinal direction.
Non-woven fabrics of the invention is carried out in the surficial sheets as absorbent commodity in application, by the length side of the non-woven fabricsIt is configured to the length direction towards absorbent commodity.Therefore, from the viewpoint of the anti-leakage for improving absorbent commodity, thisThe non-woven fabrics of invention preferably at least has the such arrangement of liquid flowing inhibited towards width direction.For example, such as Fig. 3 (A)Make the arrangement extended in the longitudinal direction containing portion 6 and the non-band containing portion 7 better than make such as Fig. 3 (B) containing portion 6 and it is non-containingPortion 7 with arrangement extended in the direction of the width.In addition, preferably at least having in the arrangement containing portion 6 circular such as Fig. 1There is the arrangement of length direction, width direction.
In addition, from the viewpoint of the anti-leakage of above-mentioned absorbent commodity, arbitrarily marking along crossing non-woven fabricsWhen the imaginary line of any direction, the non-length containing portion 7 is shorter in length than containing portion 6 preferably on the imaginary line.It is above-mentioned to crossAny direction be more preferably the consistent direction of width direction with absorbent commodity.In the width direction one with absorbent commodityWhen arbitrarily marking imaginary line on the direction of cause, the length containing portion 6 and the non-length containing portion 7 on the imaginary line are respectivelyThe length of the length of width direction containing portion 6 and the non-width direction containing portion 7.At this point, being overlapped in containing on imaginary lineHave portion 6 and it is non-containing portion 7 there are it is multiple when, will be abutted and be compared containing portion 6 and the non-length containing portion 7 each 1.SeparatelyOutside, imaginary line is preferably crossed at the non-longest position of the length containing portion 7.
As the concrete example of the preferred configuration, form shown in Fig. 4 (A)~(D) can be enumerated.
Fig. 4 (A) is the figure for indicating the arrangement partial enlargement of Fig. 1.Contained with crossing arrange in the direction of the width circularWhen having the mode of the column in portion 6 to mark the imaginary line T along width direction, the preferably non-length S1 containing portion 7 is longer than containing portion 6Length S2 (S1 > S2).Can moderately inhibit to be likely to become as a result, liquid flowing will because liquid film cracking agent the width containing portion 6The region for spending direction steadily makes liquid flowing become difficult to generate, so it is preferred that.It should be noted that herein contain portion 6Length be diameter of a circle.The non-length containing portion 7 is to subtract circle from the circular spacing containing between portion 6 on imaginary line TThe resulting length of diameter.
Fig. 4 (B) indicates that elliptical form will be set as containing portion 6.In the form, arranged in the direction of the width with crossingWhen the mode of the elliptical column containing portion 6 of column marks the imaginary line T along width direction, the preferably non-length containing portion 7Degree S1 is longer than the length S2 (S1 > S2) containing portion 6.It should be noted that in the form, imaginary line T is by containing portion 6The mode at center of elliptical length direction cross, the length containing portion 6 is by elliptical center on imaginary line TThe diameter of width direction.The non-length containing portion 7 be on imaginary line T subtracted from the elliptical spacing containing between portion 6 it is roundThe resulting length of diameter.
Fig. 4 (C) be by shown in Fig. 3 (A) it is band-like containing portion 6 and it is non-extend in the longitudinal direction containing portion 7 made ofArrange the figure that partial enlargement indicates.In the situation, the imagination along width direction is marked in any position of length directionLine T.On imaginary line T, preferably non-length (bandwidth) S1 containing portion 7 is longer than length (bandwidth) S2 (S1 > S2) containing portion 6.
Fig. 4 (D) be by class shown in Fig. 2 (B) it is rhomboid it is non-containing portion 7 in clathrate containing being spaced from each other in portion 6Ground arrange it is multiple made of clathrate arrangement partial enlargement indicate figure.Herein, imaginary line T is by containing the mutual friendship in portion 6The mode of fork point is crossed.That is, marking imaginary line T at the non-longest position of the length containing portion 7.On imaginary line T,It is preferred that the non-length S1 containing portion 7 is longer than the length S2 (S1 > S2) containing portion 6.
That is, about the length (S2) containing portion 6 on above-mentioned imaginary line relative to non-the ratio between the length (S1) containing portion 7(S2/S1), from the viewpoint of resistant to liquids mobility, preferably 1 hereinafter, more preferably less than 1, further preferably 2/3 hereinafter,Particularly preferably 3/7 or less.In addition, about the length (S2) containing portion 6 on above-mentioned imaginary line relative to the non-length containing portion 7The ratio between (S1) (S2/S1) is spent, reduces the non-remaining sight of liquid containing from portion 7 from using biggish sprawl of liquid film cracking agentPoint sets out, and preferably 1/19 or more, more preferably 1/9 or more, further preferably 1/4 or more.
In addition, the total area for preferably comprising portion 6 is non-total area containing portion 7 or less in non-woven fabrics 5.That is, excellentSelect total area containing portion 6 shared in the area (containing portion 6 and non-the sum of total area containing portion 7) of non-woven fabrics entiretyRatio be 50% hereinafter, more preferably 40% hereinafter, further preferably 30% or less.It can moderately inhibit possible as a result,As liquid flowing will because liquid film cracking agent the region containing portion 6, steadily make liquid flowing become difficult to generate, soIt is preferred that.In addition, the area about total area containing portion 6 in non-woven fabrics entirety (contains portion 6 and non-total face containing portion 7The sum of product) in shared ratio, from the viewpoint of the liquid film cracking role for keeping non-woven fabrics entirety, preferably 5% or more, morePreferably 10% or more, further preferably 20% or more.
It should be noted that non-woven fabrics can be delimited such as the surficial sheets of absorbent commodity about above-mentioned total areaSize when, can be used as area shown in the area of non-woven fabrics entirety and calculate.In addition, such as length direction as non-woven fabrics former materialLength is too long and when being difficult to measure entire area, taken out in such a way that the length of length direction becomes 20cm, area calculated by it.
It in non-woven fabrics of the invention, may be present in the arrangement being separated by containing portion 6 and the non-at least either containing in portion 7The whole face of nonwoven surface also is present in a part of nonwoven surface.Above-mentioned arrangement is preferably at least configured in non-woven fabrics tableFace becomes the position by liquid portion for directly receiving liquid.It is so-called by liquid portion, as its name implies, be used to inhale by non-woven fabrics 5When the situation of the property received article, refer to the part for catching discharged liquid.For example, regarding non-woven fabrics 5 as paper nappy or daily sanitary napkinsSurficial sheets carry out in application, it is believed that being the length direction and width direction of the paper nappy or daily sanitary napkins by liquid portionCenter portion.In addition, by non-woven fabrics 5 as overnight hygienic band surficial sheets carry out in application, it is believed that by liquid portion be byWhen the overnight hygienic band is divided into 4 regions in the longitudinal direction from the length direction and width in the several Two Areas in front endThe central portion in direction.So-called herein " front end " refers to the side when wearing has the overnight hygienic band towards the abdomen side of wearerTo.Especially when using surficial sheets of the non-woven fabrics 5 as absorbent commodity, from the viewpoint of liquid-absorbent, above-mentioned feelingsCondition is effective.That is, for absorbent commodity, in order to effectively work to discharged liquid, make to contain portion 6 and non-containing in portion 7The arrangement that is separated by of at least either be preferably at the part (discharge port facing portion) contacted with the excretory portion of wearer.Discharge portFacing portion is different due tos purposes of absorbent commodity etc..For example, in the sanitary napkin 100 of subsidiary flap shown in Fig. 5,At the width midway position Chong Die with absorber 120 of surficial sheets 110, in length from the position clamped by flap 130Part extending forwards, backwards on direction, being surrounded by leakage-proof socket 140 becomes discharge port facing portion 150.
In addition, liquid film cracks, agent is on the thickness direction of non-woven fabrics 5 preferably at least contained in the face for receiving liquid side.UpperIt states in the surficial sheets of example, preferably at least contains liquid film cracking agent in the skin contact layer side that the skin with wearer contacts.
The difference of the contact angle of the contact angle and non-composition fiber containing portion 7 about the composition fiber containing portion 6, due to containingHave the contact angle of the composition fiber in portion 6 be more higher than it is non-then more be difficult to form liquid film containing portion 7, so from the formation of liquid film inhibitFrom the perspective of property, preferably 5 degree or more, more preferably 10 degree or more, further preferably 20 degree or more.In addition, above-mentioned connectThe difference of feeler be preferably 60 degree hereinafter, more preferably 50 degree hereinafter, further preferably 40 degree or less.As a result, from non-woven fabrics 5Liquid imbedibility of the surface inside is excellent.It should be noted that above-mentioned contact angle can be measured by following methods.
The contact angle of the non-composition fiber containing portion 7 be preferably 90 degree hereinafter, more preferably 80 degree hereinafter, further preferablyIt is 70 degree or less.The wetability of fiber surface is moderately assigned as a result, liquid is easily accessible between fiber and liquid is inhibited to flow,Wetting areas increases, and liquid film cracking agent is easy mobile to liquid film.
In addition, the contact angle of the composition fiber containing portion 6 be preferably 110 degree hereinafter, more preferably 90 degree hereinafter, furtherPreferably 80 degree or less.Sliding property and/or hydrophobicity as a result, containing portion 6 weaken, and the liquid for being present in nonwoven surface is not easyGenerate surface outflow.
The measurement of above-mentioned contact angle can be carried out by the following method.
That is, taking out fiber, contact angle of the measurement water phase for the fiber from the predetermined portion of non-woven fabrics.It is filled as measurementIt sets, uses the automatic contact angle meter MCA-J of consonance interface science company manufacture.The measurement of contact angle uses deionized water.In temperatureIt is measured under 25 degree of degree, the determination condition of relative humidity (RH) 65%.It will be from ink-jet mode water droplet blowing unit (ClusterThe manufacture of Technology company, blowing unit aperture are 25 μm of pulsed ejector CTC-25) liquid measure that sprays is set as 20 picoliters,Drip water droplet right above to fiber.The high speed video device connected the case where dripping with horizontally disposed camera is recordedPicture.From the viewpoint of followed by image analysis, image analysis, more satisfactory recording apparatus is to be equipped with high-speed capture equipmentPersonal computer.In this measurement, it records a video every 17msec to image.In the image recorded a video, accompanying software is utilized(be set as: software version 2.6.2, parsing gimmick are sessile drop method to FAMAS, and analytic method is the method for θ/2, and image processing algorithm is nothingReflection, picture the mode of image procossing are picture frame, and threshold level 200 does not carry out Curvature modification), water droplet is landed to from non-woven fabricsThe initial image when fiber of taking-up carries out image analysis, calculate the ingress of air of water droplet face and filamentous angle, ifFor contact angle.The fiber taken out from non-woven fabrics is cut out as fibre length 1mm, which is placed in the sample stage of contact angle meter, andMaintenance level.The contact angle at 2 different positions is measured to the every fiber.The contact angle of N=5 root is measured until small1 after several points, the average value (second rounds up after decimal point) of the measured value at total 10 positions is defined as contact angle.
Then, the preferred embodiment containing the cracking agent of liquid film contained by portion of non-woven fabrics of the invention is illustrated.
The spreading coefficient of the liquid for being 50mN/m to surface tension of the liquid film cracking agent of first embodiment is 15mN/mMore than.It should be noted that the compound of the property of the liquid film cracking agent with first embodiment is known as compound sometimesC1.Moreover, the water solubility of liquid film cracking agent is preferably 0g or more and 0.025g or less.The nonwoven cloth bag of first embodimentContaining the cracking agent of above-mentioned liquid film.
Refer to possessed by liquid film cracking agent " to the spreading coefficient for the liquid that surface tension is 50mN/m ": relative to imaginationFor the spreading coefficient of the liquid of the discharged liquids such as menses as described above, urine.Should " spreading coefficient " refer to: according to 25 DEG C of temperature,The measured value as obtained from aftermentioned measuring method in the environmental area of relative humidity (RH) 65% is based on following mathematical expressions (1)And the value found out.It should be noted that the liquid film in mathematical expression (1) refers to the liquid phase of " liquid that surface tension is 50mN/m ",Including both the liquid of state between fiber or before the liquid of the state of fiber surface expansion film, expansion film, also referred to asFor liquid.In addition, the surface tension of mathematical expression (1) refers to the interfacial tension of the interface of liquid film and liquid film cracking agent and gas phase,Its interfacial tension for being different from the cracking agent and liquid film of the liquid film between liquid phase.The difference also phase in other records of this specificationTogether.
S=γw-γo-γwo·····(1)
γw: the surface tension of liquid film (liquid)
γo: the surface tension of liquid film cracking agent
γwo: the interfacial tension of liquid film cracking agent and liquid film
According to mathematical expression (1) it is found that liquid film cracking agent spreading coefficient (S) because liquid film cracking agent surface tension (γo)Become smaller and become larger, and because of the interfacial tension (γ of liquid film cracking agent and liquid filmwo) become smaller and become larger.By making the spreading coefficient15mN/m or more, liquid film crack agent at the interfibrous narrow zone caused by liquid film surface on mobility, i.e. diffusionProperty is got higher.In addition, the spreadability (small spreadability) between fiber on the liquid film of equal narrow zones is higher, then from and drop weightFolded is also higher to the non-wider array of spreadability (biggish spreadability) containing portion 7 containing portion 6.It is above-mentioned larger from fully playingAnd from the perspective of small spreadability, the spreading coefficient of above-mentioned liquid film cracking agent is more preferably 20mN/m or more, further excellentIt is selected as 25mN/m or more, particularly preferably 30mN/m or more.On the other hand, there is no particular restriction for the upper limit, but according to mathematical expression(1), upper limit value becomes 50mN/m using the liquid that surface tension is 50mN/m, is being using surface tensionUpper limit value becomes 60mN/m in the case where the liquid of 60mN/m, the upper limit using the liquid that surface tension is 70mN/mValue becomes 70mN/m, in this way, forming the surface tension of the liquid of liquid film becomes the upper limit.Therefore, in the present invention, from using surfaceFrom the perspective of tension is the liquid of 50mN/m, spreading coefficient is 50mN/m or less.
" water solubility " possessed by liquid film cracking agent is the dissolvable matter of liquid film cracking agent relative to deionized water 100gMeasure (g), be based on aftermentioned measuring method 25 DEG C of temperature, relative humidity (RH) 65% environmental area in the value that is measured.By making the water solubility 0g or more and 0.025g, hereinafter, liquid film cracks, agent is difficult to form the interface with liquid film and dissolution, fromAnd more effectively play above-mentioned diffusivity.From the same viewpoint, the water solubility of liquid film cracking agent be preferably 0.0025g withUnder, more preferably 0.0017g or less, be further preferably no larger than 0.0001g.It in addition, above-mentioned water solubility is the smaller the better, and is 0gMore than, from the viewpoint of the diffusivity to Liquid film diffusion, it is set as 1.0 × 10-9G or more is more actual.It needs to illustrateIt is, it is believed that above-mentioned water-soluble is for being also to meet by the menses of principal component, urine etc. of moisture.
Surface tension (the γ of above-mentioned liquid film (liquid that surface tension is 50mN/m)w), the surface of liquid film cracking agentPower (γo), liquid film cracking agent and liquid film interfacial tension (γwo) and liquid film cracking agent water solubility pass through the following methodIt is measured.
It should be noted that being absorbed in the non-woven fabrics as measure object for loading to physiological articles, disposable diaper etc.In the case where component (such as surficial sheets) in property article, takes out and be measured as follows.That is, leading to for absorbent commodityAfter crossing the cooling ways such as cold spraying and weakening bonding agent used in the engagement of measure object component and other components etc., carefullyIt removes and takes out measure object component.Measurement of the removing method suitable for distance and fiber number between aftermentioned fiber etc. is of the inventionMeasurement involved in non-woven fabrics.
In addition, in the case where being measured to the liquid film cracking agent for being attached to fiber, firstly, utilizing hexane, methanol, secondThe cleaning solutions such as alcohol clean the fiber for being attached with liquid film cracking agent, and solvent used in the cleaning is made (to crack comprising liquid filmThe solvent for cleaning of agent) it is dry after take out.The quality of the substance taken out at this time is calculating liquid film cracking agent relative to cellulosicIt is applied when containing ratio (OPU) of amount.The substance taken out amount for the measurement of surface tension, interfacial tensionIn the case where less, chromatographic column appropriate and solvent are selected according to the construct of the substance taken out, is utilized on this basisHigh performance liquid chromatography is classified each ingredient, further carries out MS measurement, NMR measurement, elemental analysis etc. to each component, thusIdentify the structure of each component.In addition, in the case where liquid film cracking agent includes high-molecular compound, by and with gel infiltration colorThe methods of (GPC) is composed, to be easier to carry out the identification of constituent.Moreover, the substance is then purchased if commercially available product, ifIt is not that commercially available product is then synthesized, thus obtains enough amounts, surface tension, interfacial tension are measured.In particular, aboutThe measurement of surface tension and interfacial tension is heated to this in the case where the liquid film cracking agent that as above operate obtains is solidLiquid film cracking agent+5 DEG C of fusing point and make its phase transition liquid, and under the conditions of the temperature directly implement measure.
(surface tension (the γ of liquid film (liquid)w) measuring method)
Can 25 DEG C of temperature, relative humidity (RH) 65% environmental area in, simultaneously by flat band method (Wilhelmy method)It is measured using platinum sheet.As measurement device at this time, automatic surface tensometer " CBVP-Z " (trade name, association can be usedIt is manufactured with interface science Co., Ltd.).Platinum sheet is 99.9%, the platinum sheet having a size of long 25mm, width 10mm using purity.
It should be noted that in following measurements about liquid film cracking agent, it is above-mentioned using above-mentioned measuring method" liquid that surface tension is 50mN/m " uses polyoxy second of the addition as nonionic system surface reactive material in deionized waterAlkene sorbitan monolaurate (such as Kao Corp's manufacture, trade name RHEODOL SUPER TW-L120) is simultaneouslySurface tension is adjusted to solution obtained by 50 ± 1mN/m.
(surface tension (the γ of liquid film cracking agento) measuring method)
It can be with the surface tension (γ of liquid filmw) measurement similarly, in the ring of 25 DEG C of temperature, relative humidity (RH) 65%In the region of border, it is measured by flat band method using identical device.When carrying out the measurement, as described above, in acquired liquidIn the case that film cracks agent as solid, it is heated to+5 DEG C of the fusing point of liquid film cracking agent and makes its phase transition liquid, and at thisDirectly implement measurement under the conditions of temperature.
(interfacial tension (the γ of liquid film cracking agent and liquid filmwo) measuring method)
Can 25 DEG C of temperature, relative humidity (RH) 65% environmental area in, be measured by sessile drop method.As thisWhen measurement device, can be used automatic interfacial viscoelasticity measurement device (TECLIS-ITCONCEPT company manufacture, trade nameTHE TRACKER；KRUSS company, trade name DSA25S).In sessile drop method, surface tension while forming drop (drop)The nonionic system surface reactive material for including by the liquid of 50mN/m starts to adsorb, over time, interfacial tension byGradually reduce.Therefore, interfacial tension when forming drop (at 0 second) is read.In addition, when carrying out the measurement, as described above, being takenIn the case that the liquid film cracking agent obtained is solid, it is heated to+5 DEG C of the fusing point of liquid film cracking agent and makes its phase transition liquid,And directly implement measurement under the conditions of the temperature.
In addition, in the measurement of interfacial tension, in the density contrast for the liquid that liquid film cracking agent and surface tension are 50mN/mIn very small situation, in the case that viscosity is significantly high, in the determination limit situation below that interfacial tension value is sessile drop method, haveWhen sessile drop method is difficult to be utilized to measure interfacial tension.In this case, in the ambient zone of 25 DEG C of temperature, relative humidity (RH) 65%It in domain, is measured by hanging drop method, thus, it is possible to realize measurement.As measurement device at this time, rotation drop interface can be usedPower meter (manufacture of KRUSS company, trade name SITE100).In addition, about the measurement, also read drop it is dimensionally stable whenInterfacial tension is heated to+5 DEG C of the fusing point of liquid film cracking agent and makes in the case where acquired liquid film cracking agent is solidIts phase transition is liquid, and directly implements measurement under the conditions of the temperature.
It should be noted that in the case where can measure interfacial tension using two kinds of measurement devices, using smaller boundaryFace tension value is as measurement result.
(measuring method of the water solubility of liquid film cracking agent)
25 DEG C of temperature, relative humidity (RH) 65% environmental area in, on one side using blender stirring 100g go fromSub- water dissolves acquired liquid film cracking agent at leisure, will not be redissolved (visible to suspend, precipitating, be precipitated, gonorrhoea)The meltage at moment is set as water solubility.Specifically, being measured in such a way that each 0.0001g adds preparation.Its resultIt is to observe that all undissolved situation of 0.0001g is set as " be less than 0.0001g ", observes dissolution 0.0001g but undissolvedThe case where 0.0002g, is set as " 0.0001g ".It should be noted that in the case where liquid film cracking agent is surfactant, it is " moltenSolution " refers to monodisperse dissolution and both micella dispersing and dissolvings, it is seen that suspend, precipitating, be precipitated, gonorrhoea at the time of meltage atFor water solubility.
The liquid film cracking agent of present embodiment has above-mentioned spreading coefficient and water solubility, thus on the surface of liquid filmIt extends and does not dissolve, the layer of liquid film can be pushed open from the immediate vicinity of liquid film.Make liquid film destabilization as a result, and cracks.
Herein, referring to Fig. 6 and 7, the effect of the liquid film cracking agent of present embodiment in non-woven fabrics is specifically saidIt is bright.
As shown in fig. 6, the discharged liquids such as the viscosity such as menses high liquid, urine are easy to form in interfibrous narrow zoneLiquid film 2.In this regard, liquid film cracking agent makes liquid film destabilization in the following manner and destroyed, inhibits liquid film forming, promote from nothingDrain is carried out in woven fabric.Firstly, the cracking agent 3 of liquid film possessed by the fiber 1 of non-woven fabrics exists as shown in (A1) and (B1) of Fig. 7In the state of keeping its interface with liquid film 2, moved on the surface of liquid film 2.Then, as shown in (A2) of Fig. 7 and (B2), liquidFilm cracking agent 3 is pushed a part of liquid film 2 open and is invaded to thickness direction, as shown in (A3) and (B3) of Fig. 7, makes liquid film at leisure2 gradually change into uneven and thin film.As a result, as shown in (A4) and (B4) of Fig. 7, liquid film 2 is by into opening in a manner of openingHole and crack.The liquid such as the menses of cracking become drop, and become easy and pass through between the fiber of non-woven fabrics, to reduce liquidResidual.In addition, the effect about above-mentioned liquid film cracking agent for liquid film, is not limited to the feelings for interfibrous liquid filmShape, the liquid film for being wound in fiber surface similarly play a role.That is, liquid film cracking agent can be wound in fiber surfaceIt is moved on liquid film, pushes a part of the liquid film open, so that liquid film be made to crack.In addition, for the liquid film for being wound in fiber surface, liquidEven if film cracking agent is not moved at the position for being attached to fiber, also liquid film can be made to crack because of its hydrophobic effect, thusIt is able to suppress liquid film forming.
Like this, liquid film of the invention cracking agent and the liquid modifying without reducing liquid film surface tension etc., but oneWhile between pushing fiber open, liquid film caused by fiber surface itself, make on one side its cracking, hindered, thus promote from non-woven fabricsMiddle discharge liquid.Thereby, it is possible to reduce the liquid of non-woven fabrics residual.In addition, if being filled using this non-woven fabrics as surficial sheetsEnter absorbent commodity, then inhibit interfibrous liquid holdup, it is ensured that the penetration by liquid access until absorber.Liquid as a result,Permeability improve, the flowing of the liquid of sheet surface is inhibited, and the infiltration rate of liquid improves.In particular, viscosity can be improvedThe easy infiltration rate for remaining on interfibrous liquid such as high menses.Moreover, the pollutions such as red in surficial sheets are not easy to showEye, become can feel conscientiously absorbability feel at ease and the absorbent commodity of high reliablity.
In the present embodiment, the interfacial tension to the liquid that surface tension is 50mN/m of above-mentioned liquid film cracking agent is into oneStep is preferably 20mN/m or less.I.e., it is specified that 1 variable of the value of the spreading coefficient (S) in above-mentioned mathematical expression (1), i.e. " liquid film is openedSplit the interfacial tension (γ of agent and liquid filmwo) " it is preferably 20mN/m or less.By inciting somebody to action " the interfacial tension of liquid film cracking agent and liquid film(γwo) " inhibit lower, thus liquid film cracking agent spreading coefficient improve, liquid film cracking agent become easy from fiber surface toLiquid film immediate vicinity is mobile, and above-mentioned effect becomes more apparent upon.From this viewpoint, the agent of liquid film cracking " is to surface tensionThe interfacial tension of the liquid of 50mN/m " is more preferably 17mN/m or less, further preferably 13mN/m or less, still more preferablyFor 10mN/m or less, particularly preferably 9mN/m or less, especially preferably 1mN/m or less.On the other hand, lower limit has no especiallyLimitation, from the viewpoint of insoluble to liquid film, as long as being greater than 0mN/m.It should be noted that being in interfacial tension0mN/m, in the case where dissolving, due to can not be formed liquid film and liquid film cracking agent between interface, mathematical expression (1)It is invalid, sprawling for preparation will not occur.
It about spreading coefficient, will also realize that according to the mathematical expression, numerical value can occur according to the surface tension of object liquidVariation.For example, the surface tension in object liquid is 72mN/m, the surface tension of liquid film cracking agent is 21mN/m, their interfaceIn the case that tension is 0.2mN/m, spreading coefficient becomes 50.8mN/m.
In addition, the surface tension in object liquid is 30mN/m, the surface tension of liquid film cracking agent is 21mN/m, their boundaryIn the case that face tension is 0.2mN/m, spreading coefficient becomes 8.8mN/m.
In any case, be preparation spreading coefficient it is bigger, then liquid film cracking effect it is bigger.
In the present specification, numerical value when surface tension is 50mN/m is defined, even if but surface tension difference, each objectThe size relation of the numerical value of the mutual spreading coefficient of matter will not change, therefore, even if assuming the surface tension of body fluid because dailyPhysical condition etc. and change and the spreading coefficient of preparation the big, more show excellent liquid film cracking effect.
In addition, in the present embodiment, the surface tension of liquid film cracking agent is preferably 32mN/m or less, is more preferably30mN/m or less, further preferably 25mN/m or less, particularly preferably 22mN/m or less.In addition, above-mentioned surface tension is smallerBetter, lower limit is not particularly limited.From the viewpoint of the durability of liquid film cracking agent, 1mN/m or more is more actual.
By the way that even if the surface tension of liquid film cracking agent is set as range as described above hereinafter, in the object for forming liquid filmWhen the situation that the surface tension of liquid reduces, liquid film cracking role can also be effectively played.
Next, the liquid film cracking agent for second embodiment is illustrated.
The liquid film cracking agent of second embodiment is greater than 0mN/ to the spreading coefficient for the liquid that surface tension is 50mN/mIt m, is positive value, and the interfacial tension of liquid for being 50mN/m to surface tension is 20mN/m or less.It should be noted that sometimesThe compound of the property of liquid film cracking agent with second embodiment is known as compound C2.Moreover, liquid film cracking agentWater solubility is preferably 0g or more and 0.025g or less.
The non-woven fabrics of second embodiment includes the cracking agent of above-mentioned liquid film.By the above-mentioned " liquid for being 50mN/m to surface tensionThe interfacial tension of body " is set as 20mN/m or less and refers to: as described above, liquid film cracks, diffusivity of the agent on liquid film is improved.As a result,Even if being less than the lesser situation of spreading coefficient as 15mN/m " to the spreading coefficient for the liquid that surface tension is 50mN/m "Under, also due to diffusivity is high and disperses more liquid film cracking agent into liquid film from fiber surface, liquid is pushed open in multiple positionsThus film can be played and similarly be acted on the situation of first embodiment.
It should be noted that " to the spreading coefficient for the liquid that surface tension is 50mN/m " relevant to liquid film cracking agent,It is " water solubility " and identical as the definition in first embodiment " to the interfacial tension for the liquid that surface tension is 50mN/m ", andIts measuring method is also identical.
In the present embodiment, above-mentioned " to table from the viewpoint of the above-mentioned effect for more effectively playing liquid film cracking agentFace tension is the interfacial tension of the liquid of 50mN/m " it is preferably 17mN/m or less, more preferably 13mN/m or less, further preferredFor 10mN/m or less, be still more preferably 9mN/m or less, particularly preferably 1mN/m or less.It is real with first about lower limit valueApplying mode, similarly there is no particular restriction, is never dissolved in from the perspective of liquid film (liquid that surface tension is 50mN/m),It is more actual for being larger than 0mN/m.
In turn, it about " to the spreading coefficient for the liquid that surface tension is 50mN/m ", cracks from liquid film is more effectively playedFrom the perspective of the above-mentioned effect of agent, preferably 9mN/m or more, more preferably 10mN/m or more, further preferably 15mN/mMore than.There is no particular restriction for its upper limit, becomes the viewpoint of the upper limit from the surface tension for the liquid for forming liquid film according to mathematical expression (1)It sets out, is essentially 50mN/m or less.
The surface tension of liquid film cracking agent and the more preferable range of water solubility are identical with first embodiment.
The non-woven fabrics comprising liquid film cracking agent of first embodiment and second embodiment include liquid film cracking agentNon-woven fabrics is preferably also containing the anionic surfactant of phosphate type.The hydrophily of fiber surface improves as a result, wetability mentionsHeight, the area that liquid film is in contact with liquid film cracking agent as a result, becomes larger, moreover, because blood or urine have the tool from organismHave the surface reactive material of phosphate, therefore, by and with phosphate surfactant, thus due to activating agentThe compatibility of intermiscibility, the phosphatide for furthermore being included with blood or urine is also good, therefore liquid film cracking agent becomes easy to liquid filmIt is mobile, further promote the cracking of liquid film.Liquid film crack agent and phosphate type anionic surfactant content ratio withMass ratio (liquid film crack agent: the anionic surfactant of phosphate type) meter and preferably 1: 1~19: 1, more preferably 2: 1It~15: 1, is more preferably 3: 1~10: 1.In particular, above-mentioned content ratio by quality ratio be preferably 5: 1~19: 1, moreIt preferably 8: 1~16: 1, is more preferably 11: 1~13: 1.
As the anionic surfactant of phosphate type, can use with no particular limitation.For example, as its concrete example,It can enumerate: alkyl ether phosphate, phosphate dialkyl ester, alkylphosphonate etc..Wherein, from improve it is same with the compatibility of liquid filmWhen assign non-woven fabrics processability function from the perspective of, preferably alkylphosphonate.
As alkyl ether phosphate, various alkyl ether phosphates can be used with no particular limitation.Such as can enumerate: polyoxy is sub-Alkyl stearyl ether phosphate, polyoxy alkylidene myristyl ether phosphate, polyoxy alkylidene lauryl ether phosphate ester, polyoxy are sub-Alkyl palmityl ether phosphate etc. has the alkyl ether phosphate of saturated carbon chains；Polyoxy alkylidene oleyl ether phosphate, polyoxyAlkylidene palmityl ether phosphate etc. has the alkyl ether phosphate of side chain with unsaturated carbon chains and in these carbochains.MoreIt is preferred that the complete neutralization salt of list or two polyoxy alkylidene alkyl ether phosphates that carbochain is 16~18 or part neutralize salt.In addition,It as polyoxy alkylidene, can enumerate: polyoxyethylene, polyoxypropylene, polyoxy butylidene and be total to the composition monomer of they etc.Polyoxy alkylidene obtained by poly- etc..It should be noted that the salt as alkyl ether phosphate, can enumerate: the alkali metal such as sodium, potassium,Ammonia, various amines etc..Alkyl ether phosphate can be used alone a kind of or two or more uses of mixing.
It as the concrete example of alkylphosphonate, can enumerate: phosphoric acid stearyl ester, phosphoric acid myristin, lauryl phosphate, phosphoric acidPalm ester etc. has the alkylphosphonate of saturated carbon chains；Phosphoric acid oleyl ester, phosphoric acid palmityl ester etc. have unsaturated carbon chains andWith the alkylphosphonate of side chain in these carbochains.The mono alkyl phosphate or phosphoric acid dialkyl group that more preferable carbochain is 16~18The complete neutralization salt of ester or part neutralize salt.It should be noted that the salt as alkylphosphonate, can enumerate: the alkali gold such as sodium, potassiumCategory, ammonia, various amines etc..Alkylphosphonate can be used alone a kind of or two or more uses of mixing.
Next, being illustrated to the concrete example of the liquid film cracking agent in first embodiment and second embodiment.ItBecause without being dissolved in water or the property with slightly water-soluble, playing above-mentioned liquid film cracking in above-mentioned specific numberical rangeEffect.In contrast, existing surfactant as fibre finish etc. be it is practical on be dissolved in water come it is using,Substantially water-soluble surfactant, and the liquid film cracking agent of non-present invention.
As the liquid film cracking agent in first embodiment and second embodiment, preferably matter average molecular weight is 500 or moreCompound.The matter average molecular weight can produce bigger effect the viscosity of liquid film cracking agent.Liquid film cracks agent by protecting viscosityIt holds higher, to be not easy to flow down when liquid is by between fiber, the duration of the liquid film cracking effect in non-woven fabrics can be kept.From the viewpoint of the viscosity for being set as fully continuing liquid film cracking effect, the matter average molecular weight of liquid film cracking agent is more preferablyIt 1000 or more, is more preferably 1500 or more, particularly preferably 2000 or more.On the other hand, from be set on hold liquid film crackingAgent from the viewpoint of the fiber equipped with liquid film cracking agent to the movement of liquid film, i.e. larger and small diffusible viscosity, it is excellentIt is selected as 50000 or less, more preferably 20000 or less, further preferably 10000 or less.The measurement of the matter average molecular weight usesGel permeation chromatograph (GPC) " CCPD " (trade name, TOSOH Co., Ltd's manufacture) is measured.Determination condition is as described below.In addition, the calculating of conversion molecular weight is carried out with polystyrene.
Splitter: GMHHR-H+GMHHR-H (cation)
Eluent: L Farmin DM20/CHCl3
Solvent flow rate: 1.0ml/min
Separation column temperature: 40 DEG C
In addition, as the liquid film cracking agent in first embodiment, preferably are as follows: as described later, have and be selected from following structuresX, the compound of at least one kind of structure in X-Y and Y-X-Y.
Structure X indicates that general > C (A)-(C indicates carbon atom.In addition,<,>and-indicate bonding key, it is same as below.),-C(A)
2-、-C(A)(B)-、>C(A)-C(R
1)<、>C(R
1)-、-C(R
1)(R
2)-、-C(R
1)
2,>C<and-Si (R
1)
2O-、-Si(R
1)(R
2) any basic structure in O- repeats or combine the siloxane chain or its combination chain of structure obtained by two or more.With hydrogen atom or have selected from-C (A) in the end of structure X
3、-C(A)
2B、-C(A)(B)
2、-C(A)
2-C(R
1)
3、-C(R
1)
2A、-C(R
1)
3Or-OSi (R
1)
3、-OSi(R
1)
2(R
2)、-Si(R
1)
3、-Si(R
1)
2(R
2) at least one kind of group.
Above-mentioned R1、R2Each independently represent hydrogen atom, (preferably carbon number is 1~20 to alkyl.It such as is preferably methyl, secondBase, propyl.), alkoxy (preferably carbon number be 1~20.It such as is preferably methoxyl group, ethyoxyl.), aryl (preferably carbon number be 6~20.It such as is preferably phenyl.), halogen atom (such as preferably fluorine atom.) etc. various substituent groups.A, B is each independently representedHydroxyl, carboxylic acid group, amino, amide groups, imino group, phenolic group etc. include the substituent group of oxygen atom, nitrogen-atoms.In structure X respectivelyThere are more than two R1、R2, in the case where A, B, they are same or different to each other.In addition, continuously between C (carbon atom), SiKey be usually singly-bound, but also may include double bond, three keys, the key between C, Si also may include ether (- O-), amide groups (-CONRA: RAFor hydrogen atom or univalent perssad), ester group (- COO-), carbonyl (- CO-), the concatenating groups such as carbonate group (- OCOO-)Group.The quantity that one C and Si is bonded with others C or Si is 1~4, and there may also be the silicone chains (siloxanes of long-chainChain) or combination chain there is branch or there is the case where radial structure.
Y is indicated comprising the atom in hydrogen atom, carbon atom, oxygen atom, nitrogen-atoms, phosphorus atoms, sulphur atom and is hadHydrophilic hydrophilic group.For example, hydroxyl, carboxylic acid group, amino, amide groups, imido grpup, phenolic group, polyoxy alkylidene (oxyalkyleneCarbon number be preferably 1~4.For example, it is preferable to be polyoxy Asia second (POE) base, polyoxy Asia third (POP) base), sulfonic group, sulfate, phosphorus(these beet bases refer to from each betaine compound for acidic group, sulfobetaines base, carbobetaine base, phosphoric acid betaine baseRemove glycine betaine residue made of 1 hydrogen atom), the hydrophilic groups such as quaternary ammonium group independent a kind of or comprising the hydrophilic of a combination thereofBase etc..In addition to these, it can also enumerate in aftermentioned M1In cited group and functional group.It should be noted that being in YIt is same to each other or different in the case where two or more.
In structure X-Y and Y-X-Y, Y is bonded to the end group of X or X.The case where Y is bonded to the end group of XUnder, the end group of X will be for example bonded with the removal such as the hydrogen atom for being bonded the identical quantity of number of Y with Y.
In this configuration, from the group illustrated select hydrophilic group Y, A, B and can satisfy above-mentioned spreading coefficient,Water solubility, interfacial tension.In this way, showing the liquid film cracking effect of target.
Above-mentioned liquid film cracking agent preferred structure X is the compound of siloxane structure.In addition, about liquid film cracking agent, it is excellentChoosing comprising using structure shown in following formula (1)~(11) as the concrete example of above structure X, X-Y, Y-X-Y simultaneously any combination andThe compound of the siloxane chain obtained.In addition, the compound preferably has above range from the viewpoint of liquid film cracking roleMatter average molecular weight.
[changing 1]
In formula (1)~(11), M1、L1、R21And R22Indicate the group of 1 valence below or multivalence (more than divalent or divalent).R23And R24Indicate the group or singly-bound of 1 valence below or multivalence (more than divalent or divalent).
M1Indicate that there is polyoxyethylene, polyoxypropylene, polyoxy butylidene or poly (oxyalkylene) obtained by combining themThe group of base；Erythrityl, Xylitol-based, sorbose alcohol radical, glyceryl or ethylene glycol etc. have more than two hydroxylsHydrophilic group (from erythrite etc. there is the above compound of more than two hydroxyls to remove hydrophilic group made of 1 hydrogen atom), hydroxyl,(preferably carbon number is 1~20 for carboxylic acid group, sulfydryl, alkoxy.It such as is preferably methoxyl group.), amino, amide groups, imino group, phenolBase, sulfonic group, quaternary ammonium group, sulfobetaines base, hydroxyl sulfo betaine base, phosphoric acid betaine base, imidazolinium betaine base, carbonylBase beet base, epoxy group, methanol-based, (methyl) acryloyl group or functional group obtained by combining them.It needs to illustrateIt is, in M1In the case where multivalence group, M1Expression further removes 1 or more hydrogen atom from above-mentioned each group or functional groupObtained by group.
L1Indicate that ether, amino (can be used as L1The amino used is with > NRC(RCFor hydrogen atom or univalent perssad) tableShow.), amide groups, ester group, carbonyl, carbonate group bonding base.
R21、R22、R23And R24Each independently representing alkyl, (preferably carbon number is 1~20.Such as preferably methyl, ethyl,Propyl, isopropyl, butyl, amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl.), alkoxy (preferably carbon number be 1~20.It such as is preferably methoxyl group, ethyoxyl.), aryl (preferably carbon number be 6~20.It such as is preferably phenyl.), fluoroalkyl or virtueAlkyl or alkyl or halogen atom obtained by combining them (such as preferably fluorine atom.).It should be noted that in R22And R23In the case where multivalence group, expression is further removed from above-mentioned alkyl obtained by 1 or more hydrogen atom or fluorine atomPolyvalent hydrocarbon radical.
In addition, in R22Or R23With M1In the case where bonding, about R can be used as22Or R23The group of use, in addition to above-mentionedExcept each group, above-mentioned alkyl or halogen atom, can enumerate can be used as R32The imino group of use.
About liquid film cracking agent, wherein preferably following compound: it is with any one in formula (1), (2), (5) and (10)Shown in structure as X, and with structure shown in any one in the above-mentioned formula other than these formulas as the end of X or include XEnd and Y group.It further preferably include the compound of siloxane chain, the X of the siloxane chain or the end comprising XThere is structure shown in any one in the above-mentioned formula of at least one (2), (4), (5), (6), (8) and (9) with the group of Y.
As the concrete example of above compound, organically-modified silicone (the poly- silicon oxygen of silicone-based surfactant can be enumeratedAlkane).For example, the organically-modified silicone as reacted property organic group modification, can enumerate: amino modified, epoxy-modified, carboxylModification, glycol modification, substance carbinol-modified, (methyl) is acrylic modified, sulfhydryl modified, phenol is modified.In addition, as through non-The organically-modified silicone of reactive organic group modification, can enumerate: polyether-modified (including polyoxy alkylidene is modified), methylbenzene secondAlkenyl is modified, long chain alkyl modified, higher fatty acids is ester modified, higher alkoxy is modified, higher fatty acid modified, fluorine richnessSubstance etc..According to these organically-modified types, such as can be by suitably changing the molecular weight of silicone chains, degree of modification, being modified baseAddition molal quantity etc. of group and obtain the spreading coefficient for playing above-mentioned liquid film cracking role.Herein, " long-chain " refers to that carbon number is 12Above, preferably 12~20 substance.In addition, " advanced " refers to that carbon number is the substance of 6 or more, preferably 6~20.
Wherein, the conducts such as polyoxy alkylidene modified silicone, epoxy-modified silicone, carbinol-modified silicone, glycol modification siliconeThe liquid film cracking agent of modified silicone is preferably the modified silicone for having the structure in modified group at least one oxygen atom,Particularly preferably polyoxy alkylidene modified silicone.Polyoxy alkylidene modified silicone has polysiloxane chain, and therefore, it is difficult to infiltrate intoThe inside of fiber and be easy to remain in surface.In addition, having hydrophilic polyoxy alkylidene chain by addition, thus affine with waterProperty improve, interfacial tension it is low, therefore be easy to move on above-mentioned liquid film surface, so it is preferred that.Therefore, it is easy in above-mentioned liquid film tableIt is moved on face, thus preferably.Even if polyoxy alkylidene modified silicone is in the part in addition, implementing the processing of the heat fusings such as embossingIt is easy to remain in the surface of fiber, liquid film cracking role is not easy to reduce.In particular, being easy to fill at the embossing part accumulated in liquidFission reveals liquid film cracking role, so it is preferred that.
As polyoxy alkylidene modified silicone, silicone shown in following formula [I]~[IV] can be enumerated.In addition, being opened from liquid filmFrom the perspective of splitting effect, which preferably has the matter average molecular weight of above range.
[changing 2]
[changing 3]
[changing 4]
[changing 5]
In formula, R31Indicate that (preferably carbon number is 1~20 to alkyl.Such as preferably methyl, ethyl, propyl, isopropyl, butyl,Amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl.).R32Indicate that (preferably carbon number is 1~20 for singly-bound or alkylidene.Such asPreferably methylene, ethylidene, propylidene, butylidene.), preferably indicate above-mentioned alkylidene.More than two R31, it is more than twoR32Respectively it is same or different to each other.M11Indicate the group with polyoxy alkylidene, preferably polyoxy alkylidene.As above-mentionedPolyoxy alkylidene, polyoxyethylene, polyoxypropylene, polyoxy butylidene can be enumerated or be copolymerized their composition monomerObtained by group etc..M, n is each independently 1 or more integer.It should be noted that the symbol of these repetitive units is various(I) it is determined respectively in~(IV), may not indicate identical integer, can also be different.
In addition, polyoxy alkylidene modified silicone also can have that polyoxyethylene is modified and polyoxypropylene it is modified in it is anyThe modified group of person or both.In addition, in order to it is not soluble in water and have low interfacial tension, it is generally desirable to, in the alkyl of silicone chainsR31It is upper that there is methyl.As the substance with the modified group, silicone chains, there is no particular restriction, such as has Japanese Unexamined Patent Publication 2002-Substance documented by 161474 paragraph [0006] and [0012].More specifically, it can enumerate: polyoxyethylene (POE) polyoxyPropylidene (POP) modified silicone, polyoxyethylene (POE) modified silicone, polyoxypropylene (POP) modified silicone etc..As POEModified silicone can be enumerated: addition has modified dimethyl silscone of the POE (3) of 3 moles of POE etc..As POP modified silicone, can liftOut: addition has the modified dimethyl silscone of the POP (10) of 10 moles, 12 moles or 24 moles POP, the modified dimethyl-silicon of POP (12)Modified dimethyl silscone of ketone, POP (24) etc..
About the spreading coefficient and water solubility of above-mentioned first embodiment, the polyoxy alkylidene modified silicone the case whereUnder, such as (oxyalkylene of polyoxy alkylidene can be formed relative to polyoxy alkylidene by the addition molal quantity of polyoxy alkylidene1 mole of modified silicone of bonding number), following degree of modification etc. and be set as defined range.In liquid film cracking agent, surface tensionAnd interfacial tension can also similarly be set to defined range.
From the above point of view, the addition molal quantity of the polyoxy alkylidene is preferably 1 or more.If less than 1, for above-mentionedInterfacial tension is got higher for liquid film cracking role, and thus spreading coefficient becomes smaller, therefore liquid film cracking effect dies down.Go out from the viewpointHair, addition molal quantity are more preferably 3 or more, further preferably 5 or more.On the other hand, if addition molal quantity is excessive, becomeIt is hydrophilic and water solubility is got higher.From this viewpoint, addition molal quantity is preferably 30 or less, is more preferably 20 or less, is furtherPreferably 10 or less.
About the degree of modification of modified silicone, hydrophily can be damaged if too low, thus preferably 5% or more, more preferablyIt 10% or more, is more preferably 20% or more.In addition, can be dissolved in water if excessively high, thus preferably 95% or less, moreIt preferably 70% or less, is more preferably 40% or less.It should be noted that the degree of modification of above-mentioned modified silicone refers to: warpRepetition list of the number of the repetitive unit of modified siloxanes bonding part relative to the siloxanes bonding part in 1 molecule of modified siliconeThe ratio of the total number of member.For example, in above-mentioned formula [I] and [IV] be (n/m+n) × 100%, in formula [II] for (2/m) ×100%, be in formula [III] (1/m) × 100%.
In addition, about above-mentioned spreading coefficient and water solubility, in the case where polyoxy alkylidene modified silicone, in addition to upperState other than mode, defined range can also be set as in the following manner respectively: and with the polyoxyethylene of water dissolvable withThe polyoxypropylene and polyoxy butylidene of water-insoluble are as modified group；Change the molecular weight of the silicone chains of water-insoluble；WithAnd on the basis of polyoxy alkylidene is modified, amino, epoxy group, carboxyl, hydroxyl, methanol-based etc. are imported as modified base；Etc..
This can be used as the polyalkylene modified silicone of liquid film cracking agent by the (Oil based on the containing ratio of fiber qualityPer Unit) preferably comprise 0.02 mass % or more and 5 mass % or less.The containing ratio of the polyalkylene modified silicone(OPU) 1 mass % is more preferably hereinafter, further preferably 0.4 mass % or less.The sense of touch of non-woven fabrics becomes preferred as a result,.In addition, from the viewpoint of fully playing the effect that cracks using the polyalkylene modified silicone bring liquid film, it is above-mentioned to containThere is ratio (OPU) to be more preferably 0.04 mass % or more, further preferably 0.1 mass % or more.
It should be noted that fiber quality mentioned herein refers to comprising whole containing portion 6 and the non-non-woven fabrics containing portion 7Fiber quality (containing ratio (OPU) described below is also identical).
As the liquid film cracking agent in second embodiment, preferably are as follows: as described later, have and be selected from following structures Z, Z-YAnd the compound of at least one kind of structure in Y-Z-Y.
Structure Z indicates general > C (A)-(C: carbon atom) ,-C (A)2-、-C(A)(B)-、>C(A)-C(R3)<、>C(R3)-、-C(R3)(R4)-、-C(R3)2,>C<in any basic structure repeat or combine the hydrocarbon chain of structure obtained by two or more.In structureThe end of Z is with hydrogen atom or has selected from-C (A)3、-C(A)2B、-C(A)(B)2、-C(A)2-C(R3)3、-C(R3)2A、-C(R3)3In at least one kind of group.
Above-mentioned R3、R4Each independently represent hydrogen atom, (preferably carbon number is 1~20 to alkyl.It such as is preferably methyl, secondBase, propyl, isopropyl, butyl, amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl.), alkoxy (preferably carbon number be 1~20.It such as is preferably methoxyl group, ethyoxyl.), aryl (preferably carbon number be 6~20.It such as is preferably phenyl.), fluoroalkyl,Aralkyl or the various substituent groups such as alkyl or fluorine atom obtained by combining them.A, B each independently represent hydroxyl,Carboxylic acid group, amino, amide groups, imido grpup, phenolic group etc. include the substituent group of oxygen atom, nitrogen-atoms.Two are individually present in structure ZA above R3、R4, in the case where A, B, they are same or different to each other.In addition, the key between continuous C (carbon atom) is usualFor singly-bound, but it also may include double bond, three keys, the key between C also may include ether, amide groups, ester group, carbonyl, carbonic esterBase etc. links group.The quantity that one C is bonded with others C is 1~4, and there may also be the hydrocarbon chains of long-chain branch occursOr there is the case where radial structure.
Y is indicated comprising the atom in hydrogen atom, carbon atom, oxygen atom, nitrogen-atoms, phosphorus atoms, sulphur atom and is hadHydrophilic hydrophilic group.For example, hydroxyl, carboxylic acid group, amino, amide groups, imido grpup, phenolic group；Alternatively, (oxygen is sub- for polyoxy alkylideneThe carbon number of alkyl is preferably 1~4.Such as preferably polyoxyethylene, polyoxypropylene, polyoxy butylidene or by their groupsPolyoxy alkylidene made of conjunction)；Alternatively, erythrityl, Xylitol-based, sorbose alcohol radical, glyceryl, ethylene glycol etc. have twoThe hydrophilic group of a above hydroxyl；Alternatively, sulfonic group, sulfate, phosphate, sulfobetaines base, carbobetaine base, phosphoric acid sweet teaIndependent one kind of the hydrophilic groups such as dish base, quaternary ammonium group, imidazolinium betaine base, epoxy group, methanol-based, methylacryloyl；OrPerson, the hydrophilic group etc. comprising a combination thereof.It should be noted that in the case where Y is more than two, it is same to each other or different.
In structure Z-Y and Y-Z-Y, Y is bonded to the end group of Z or Z.The case where Y is bonded to the end group of ZUnder, the end group of Z will be for example bonded with the removal such as the hydrogen atom for being bonded the identical quantity of number of Y with Y.
In this configuration, from the group illustrated select hydrophilic group Y, A, B and can satisfy above-mentioned spreading coefficient,Water solubility, interfacial tension.In this way, showing the liquid film cracking effect of target.
Above-mentioned liquid film cracking agent preferably using structure shown in following formula (12)~(25) as above structure Z, Z-Y,Compound obtained by the concrete example and any combination of Y-Z-Y.In addition, the compound is excellent from the viewpoint of liquid film cracking roleSelect the matter average molecular weight with above range.
[changing 6]
In formula (12)~(25), M2、L2、R41、R42And R43Indicate 1 valence below or multivalence group (divalent or divalent withOn).
M2Indicate that there is polyoxyethylene, polyoxypropylene, polyoxy butylidene or poly (oxyalkylene) obtained by combining themThe group of base；Erythrityl, Xylitol-based, sorbose alcohol radical, glyceryl or ethylene glycol etc. have the parent of more than two hydroxyls(preferably carbon number is 1~20 for water base, hydroxyl, carboxylic acid group, sulfydryl, alkoxy.It such as is preferably methoxyl group.), amino, amide groups,Imino group, phenolic group, sulfonic group, quaternary ammonium group, sulfobetaines base, hydroxyl sulfo betaine base, phosphoric acid betaine base, imidazoles sweet teaDish base, carbobetaine base, epoxy group, methanol-based, (methyl) acryloyl group or functional group obtained by combining them.
L2Indicate ether, amino, amide groups, ester group, carbonyl, carbonate group or polyoxyethylene, polyoxypropylene,The bonding base such as polyoxy butylidene or polyoxy alkylidene obtained by combining them.
R41、R42And R43Each independently representing includes hydrogen atom, (preferably carbon number is 1~20 to alkyl.It such as is preferably firstBase, ethyl, propyl, isopropyl, butyl, amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl.), alkoxy (preferably carbonNumber is 1~20.It such as is preferably methoxyl group, ethyoxyl.), aryl (preferably carbon number be 6~20.It such as is preferably phenyl.), fluorineAlkyl, aralkyl or alkyl or halogen atom obtained by combining them (such as preferably fluorine atom.) various substitutionsBase.
In R42In the case where multivalence group, R42Expression further removes 1 or more hydrogen atom from above-mentioned each substituent groupObtained by group.
It should be noted that can arbitrarily link other structures before the bonding key documented by each structure, it can alsoTo import hydrogen atom.
In addition, the concrete example as above compound, can enumerate following compound, but not limited to this.
First, polyether compound, nonionic surfactant can be enumerated.Specifically, can enumerate: any one in formula (V)Shown in polyoxyalkylene alkyl (POA) ether, 1000 or more matter average molecular weight shown in formula (VI) polyether polyols, hardLipidol polyethers, docosyl alcohol polyethers, PPG myristyl ether, PPG stearyl ether, PPG behenyl base ether etc..As polyoxy alkylidene alkaneBase ether, preferably addition have the laurel ether etc. of 3 moles or more and 24 moles or less, preferably 5 moles POP.As polyether compound,Preferably addition have 17 moles or more and 180 moles or less, the matter average molecular weights of preferably from about 50 moles be 1000~10000, preferably 3000 polypropylene glycol etc..It should be noted that the measurement of above-mentioned matter average molecular weight can utilize said determinationMethod carries out.
The polyether compound, nonionic surfactant are by (the Oil Per based on the containing ratio of fiber qualityUnit 0.1 mass % or more and 5 mass % or less) are preferably comprised.The polyether compound, nonionic surfactant containing thanRate (OPU) is more preferably 1 mass % hereinafter, further preferably 0.4 mass % or less.The sense of touch of non-woven fabrics becomes excellent as a result,Choosing.In addition, from the viewpoint given full play of using the polyether compound, nonionic surfactant bring liquid film cracking effectIt sets out, above-mentioned containing ratio (OPU) is more preferably 0.15 mass % or more, further preferably 0.2 mass % or more.
[changing 7]
[changing 8]
In formula, L21Indicate ether, amino, amide groups, ester group, carbonyl, carbonate group, polyoxyethylene, polyoxypropylene,The bonding base such as polyoxy butylidene or polyoxy alkylidene obtained by combining them.R51Indicate comprising hydrogen atom, methyl, ethyl,Propyl, isopropyl, butyl, amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl, methoxyl group, ethyoxyl, phenyl, fluothaneThe various substituent groups of base, aralkyl or alkyl or fluorine atom obtained by combining them.In addition, a, b, m and n are respectively independentThe integer that ground is 1 or more.Herein, CmHnIt indicates alkyl (n=2m+1), CaHbIt indicates alkylidene (a=2b).It should be noted thatThese carbon atom numbers and number of hydrogen atoms determine each independently in each formula (V) and (VI), may not indicate identical integer, can alsoWith difference.Hereinafter, formula (VII)~(XV) m, m, ', m ", n, n ' and n " are also identical.It should be noted that-(CaHbO)m" m "For 1 or more integer.The value of the repetitive unit determines each independently in each formula (V) and (VI), may not be identical integer,It can also be different.
About the spreading coefficient of above-mentioned second embodiment, surface tension and water solubility, in polyether compound, nonionicIn the case where surfactant, such as defined range can be set to by the molal quantity etc. of polyoxy alkylidene.From the sightPoint sets out, and the molal quantity of polyoxy alkylidene is preferably 1 or more and 70 or less.By being set as 1 or more, to give full play of above-mentionedLiquid film cracking role.From this viewpoint, molal quantity is more preferably 5 or more, further preferably 7 or more.On the other hand, additionMolal quantity is preferably 70 or less, more preferably 60 or less, further preferably 50 or less.The winding of strand is moderately as a result,It dying down, the diffusivity in liquid film is excellent, thus preferably.
In addition, about above-mentioned spreading coefficient, surface tension, interfacial tension and water solubility, in polyether compound, nonionicIn the case where surfactant, defined range can be set as in the following manner respectively: and with water-soluble polyoxy Asia secondThe polyoxypropylene and polyoxy butylidene of base and water-insoluble；Change the chain length of hydrocarbon chain；Use the substance on hydrocarbon chain with branch；Use the substance on hydrocarbon chain with double bond；Use the substance on hydrocarbon chain with phenyl ring, naphthalene nucleus；Or by appropriate group of aforesaid wayIt closes；Etc..
Second, the hydrocarbon compound that carbon atom number is 5 or more can be enumerated.The viewpoint in liquid film surface spreading is easier from liquidIt sets out, carbon atom number is preferably 100 or less, more preferably 50 or less.The hydrocarbon compound does not include polysiloxane, and unlimitedIn straight chain, or branch, the chain are not particularly restricted to saturation, unsaturation.In addition, therebetween and end also can haveThe substituent groups such as ester, ether.Wherein, the substance at normal temperature for liquid is preferably used alone.The hydrocarbon compound is relative to cellulosicThe containing ratio meter (Oil Per Unit) of amount preferably comprises 0.1 mass % or more and 5 mass % or less.The hydrocarbon compound containsTo have ratio (OPU) be preferably 1 mass % hereinafter, more preferably 0.99 mass % hereinafter, further preferably 0.4 mass % withUnder.The sense of touch of non-woven fabrics becomes preferred as a result,.In addition, from the containing ratio bring based on the hydrocarbon compound is given full play ofLiquid film cracks from the perspective of effect, and above-mentioned containing ratio (OPU) is more preferably 0.15 mass % or more, further preferably0.2 mass % or more.
It as hydrocarbon compound, can enumerate: oil or fat, such as natural oil or natural fat.As concrete example, can enumerate:Coconut benevolence oil, camellia oil, castor oil, coconut oil, corn oil, olive oil, sunflower oil, tall oil and their mixtureDeng.
In addition, can enumerate: octanoic acid, capric acid, oleic acid, lauric acid, palmitinic acid, stearic acid, myristic acid, behenic acid andThe fatty acid as shown in formula (VII) such as their mixture.
[changing 9]
CmHn-COOH [VII]
In formula, m and n are each independently 1 or more integer.Herein, CmHnIndicate the alkyl of above-mentioned each fatty acid.
As linear chain or branched chain, saturation or unsaturation, substituted or unsubstituted polyol fatty acid ester or polyol resinThe example of the mixture of fat acid esters can be enumerated: fatty acid glyceride, season as shown in formula (VIII-I) or (VIII-II)Penta 4 alcohol fatty acid esters, specifically, can enumerate: tricaprylin, tripalmitin and their mixture etc..It needsIt is noted that fatty acid glyceride, pentaerythritol fatty ester mixture in, typically comprise several monoesters, twoEster and three esters.It as the preferred example of fatty acid glyceride, can enumerate: the mixture of tricaprylin, tricaprinDeng.In addition, also can be used from the viewpoint of making interfacial tension reduce, obtain higher spreading coefficient to be able to maintain that waterInsoluble degree has imported the polyol fatty acid ester of polyoxy alkylidene.
[changing 10]
[changing 11]
In formula, m, m ', m ", n, n ' and n " are each independently 1 or more integer.More than two m, more than two nRespectively it is same or different to each other.Herein, CmHn、Cm’Hn' and Cm”Hn" respectively indicate the alkyl of above-mentioned each fatty acid.
Ester and portion are formed as linear chain or branched chain, saturated or undersaturated aliphatic acid and the polyalcohol with multiple hydroxylsDivide hydroxyl not to be esterified and the fatty acid of remaining or the example of fatty acid mixt, can enumerate: such as any one in formula (IX), formula(X) such fatty acid glyceride, sorbitan fatty acid esters, Ji Wusi shown in any one in any one in or formula (XI)The partial esterification object of alcohol fatty acid ester.Specifically, can enumerate: ethylene glycol list myristinate, two myristinate of ethylene glycol,Ethylene glycol palmitate, ethylene glycol dipalmitate, two myristinate of glycerol, dipalmitin, Monoolein,Dehydrated sorbitol mono-fatty acid ester, sorbitan monostearate, sorbitan dioleate, sorbitanThree stearyl esters, pentaerythritol monostearate, pentaerythrite dilaurate, pentaerythrite tristearate and theyMixture etc..It should be noted that including fatty acid glyceride, sorbitan fatty acid esters, pentaerythritol fatty esterIn the mixture of equal partial esterifications object, several compounds being esterified completely are typically comprised.
[changing 12]
In formula, m and n are each independently 1 or more integer.More than two m, more than two n are respectively mutually the sameOr it is different.Herein, CmHnIndicate the alkyl of above-mentioned each fatty acid.
[changing 13]
In formula, R52Indicate the linear chain or branched chain below of carbon atom number 2 or more and 22, saturated or unsaturated alkyl (alkyl,Alkenyl, alkynyl etc.).Specifically, can enumerate 2- ethylhexyl, lauryl, myristyl, palmityl, stearyl, behenyl base,Oleyl, sub-oleyl etc..
[changing 14]
In formula, m and n are each independently 1 or more integer.More than two m, more than two n are respectively mutually the sameOr it is different.Herein, CmHnIndicate the alkyl of above-mentioned each fatty acid.
In addition, sterol, phytosterol and sterol derivative can be enumerated.As concrete example, can enumerate: with formula (XII)Cholesterine, sitosterol, stigmasterol, ergosterol and their mixture of sterol structure etc..
[changing 15]
It as the concrete example of alcohol, can enumerate: laruyl alcohol, myristyl alcohol, cetanol, tristearin as shown in formula (XIII)Alcohol, cetostearyl alcohol, docosyl alcohol and their mixture etc..
[changing 16]
CmHn-OH [XIII]
In formula, m and n are each independently 1 or more integer.Herein, CmHnIndicate the alkyl of above-mentioned each alcohol.
It as the concrete example of aliphatic ester, can enumerate: isopropyl myristate, palmitinic acid as shown in formula (XIV)Isopropyl ester, caproic acid cetyl ethyl ester, three (thylhexoic acid) glyceride, myristic acid octyldodecyl, palm acid ethyl oneselfEster, ethylhexyl stearate, butyl stearate, myristyl myristate, stearyl stearate, isostearic acid cholesterol ester,And their mixture etc..
[changing 17]
CmHn-COO-CmHn [XIV]
In formula, m and n are each independently 1 or more integer.Herein, 2 CmHnIt is identical or different.CmHnThe C of-COO-mHnIndicate the alkyl of above-mentioned each fatty acid.-COOCmHnCmHnIndicate the alkyl for being originated from the alcohol for forming ester.
In addition, the concrete example as wax, can enumerate: the ceresine as shown in formula (XV), paraffin, vaseline, mineral oil,Liquid isoparaffin etc..
[changing 18]
CmHn [XV]
In formula, m and n are each independently 1 or more integer.
It is former in above-mentioned carbon about the spreading coefficient of above-mentioned second embodiment, surface tension, water solubility and interfacial tensionIn the case where the hydrocarbon compound that subnumber is 5 or more, such as defined range can be set as in the following manner respectively: can tie upThe insoluble degree of water holding imports hydrophilic polyoxyethylene on a small quantity；It is hydrophobicity but interfacial tension can be made to reduce though importsPolyoxypropylene, polyoxy butylidene；Change the chain length of hydrocarbon chain；Use the substance on hydrocarbon chain with branch；Using on hydrocarbon chainSubstance with double bond；Use the substance on hydrocarbon chain with phenyl ring, naphthalene nucleus；Etc..
In non-woven fabrics of the invention, in addition to above-mentioned liquid film crack agent other than, also can according to need and containing other atPoint.In addition, the liquid film cracking agent of first embodiment, the liquid film cracking agent of second embodiment in addition to the form that uses respectively withOutside, the preparation of the two can also be combined and used.About this point, for first in the liquid film cracking agent of second embodimentIt is also identical for compound and second compound.
It should be noted that the anion table of the liquid film cracking agent contained in non-woven fabrics of the invention, phosphate typeIn the case that face activating agent is identified, it may be used at the surface tension of above-mentioned liquid film (liquid that surface tension is 50mN/m)(γw) etc. measuring method in the identification method that illustrates.
In addition, liquid film cracking agent ingredient be main chain have siloxane chain compound or carbon atom number be 1 or more andIn the case where 20 hydrocarbon compounds below, the containing ratio (OPU) relative to fiber quality is based on passing through above-mentioned analysis methodAnd the material mass obtained, it is found out by the content of liquid film cracking agent divided by the quality of fiber.
About non-woven fabrics of the invention, distance between thickness, fiber regardless of fiber, liquid permeability is higher.ButIt is that non-woven fabrics of the invention is especially effective using fine fibre.If in order to which skin sense of touch is made than usually more softSoft non-woven fabrics and use fine fibre, then distance becomes smaller between fiber, and interfibrous narrow zone becomes more.For example, usually generalIn the case where the non-woven fabrics (fiber number 2.4dtex) used, distance is 120 μm between fiber, is formed by liquid film area rate and reachesAbout 2.6% or so.But if making fiber number lower than 1.2dtex, distance is 85 μm between fiber, liquid film area rate be about 7.8% andReach 3 times or so of usual non-woven fabrics.In contrast, liquid film cracking agent of the invention can reliably make multiple liquid film crackAnd reduce liquid residual.As described later, liquid film area rate is the liquid film calculated and the image analysis from nonwoven surfaceThe area ratio, it is closely related with the remaining state of liquid of the outmost surface of surfacing.Therefore, if liquid film area rate is reduced,Then the liquid near skin is removed, and the comfort after excretion improves, so that the dress become after excretion feels also goodAbsorbent commodity.On the other hand, aftermentioned liquid residue indicates the liquid measure that non-woven fabrics is integrally kept.If liquid film area rate becomesIt is small, even if it is then completely not proportional at last, but liquid residual is also reduced.In addition, the whiteness on surface table in the form of aftermentioned L valueShow.Lead to the tendency that liquid residue reduces, the numerical value of L value is got higher in the presence of the liquid-sheet disintegration because of surface, is visually easyWhitening color.Liquid film area rate and liquid can be made residual even if the non-woven fabrics comprising liquid film cracking agent of the invention makes fiber attenuate alsoAllowance reduces, proposes high l value, thus with high level can take into account dry feeling and make fiber attenuate brought by softness skinSense of touch.In addition, the member of formation such as surface material by using non-woven fabrics of the invention as absorbent commodity, contact with skinPartial dry feeling is high, and make because of visual whiten it is dirty caused by body fluid be not easy eye-catching, therefore be capable of providing leakageWorry is suppressed and realizes that good comfortable absorbent commodity is felt in dress.
In such non-woven fabrics comprising liquid film cracking agent, from the viewpoint of the pliability for improving skin sense of touch, nothingDistance is preferably 150 μm or less, more preferably 90 μm or less between the fiber of woven fabric.In addition, from inhibiting because being become between fiberNarrow and damage from the perspective of logical fluidity, lower limit is preferably 50 μm or more, is more preferably 70 μm or more.Specifically, excellent50 μm or more and 150 μm are selected as hereinafter, more preferably 70 μm or more and 90 μm or less.
In this case the fiber number of above-mentioned fiber is preferably 3.3dtex or less, more preferably 2.4dtex or less.In addition,Its lower limit is preferably 0.5dtex or more, more preferably 1dtex or more.Specifically, it is preferable that being 0.5dtex or more and 3.3dtexBelow, 1dtex or more and 2.4dtex or less are more preferably.
(measuring method of distance between fiber)
About distance between fiber, the thickness of the non-woven fabrics of measure object is measured in the following manner, and is substituted into followingMathematical expression (2) and find out.
Firstly, the non-woven fabrics of measure object is cut into length direction 50mm × width direction 50mm and makes the non-woven fabricsCutting sheet.The non-woven fabrics of measure object is being fitted into the situation etc. into the absorbent commodities such as physiological articles, disposable diaperIn the case where the cutting sheet for being unable to get the size, it is cut into the maximum size that can be obtained and makes cutting sheet.
The thickness of the cutting sheet is measured under 49Pa pressurization.Determination of the environment is 20 ± 2 DEG C of temperature, relative humidity 65± 5%, sensing equipment uses microscope (Co., Ltd. KEYENCE is manufactured, VHX-1000).It is cutd open firstly, obtaining above-mentioned non-woven fabricsThe enlarged photograph in face.Show size well known simultaneously in enlarged photograph.Compare the enlarged photograph of above-mentioned non-woven fabrics sectionScale bar and the thickness for measuring non-woven fabrics.Above operation is carried out 3 times, 3 average value is set as to the nonwoven of drying regimeThe thickness [mm] of cloth.It should be noted that distinguishing its boundary in the case where stacking product according to fibre diameter, calculating thickness.
Next, constitute measure object non-woven fabrics fiber fiber between distance by it is as shown below based onWrotnowski assume formula and find out.Usually the fiber for constituting non-woven fabrics is being found out based on the Wrotnowski formula assumedFiber between apart from when use.According to the formula assumed based on Wrotnowski, distance A (μm) passes through non-woven fabrics between fiber thicknessSpend h (mm), base weight e (g/m2), constitute non-woven fabrics fiber fibre diameter d (μm), fibre density ρ (g/cm3) using belowMathematical expression (2) is found out.It should be noted that in the case where having concave-convex, use the nonwoven thickness h (mm) of protrusion asTypical value and calculate.
Using scanning electron microscope, (Seiko Instruments Co., Ltd. manufactures fibre diameter d (μm)DSC6200), the fibre profile of the fiber cut to 10 is measured, its average value is set as fibre diameter.
Fibre density ρ (g/cm3) by using density gradient column, test side is tieed up according to JIS L1015 man-made staple fibresThe measuring method of density gradient method documented by method is measured.
About base weight e (g/m2), the non-woven fabrics of measure object is cut into the size of regulation (0.12m × 0.06m etc.),After quality measurement, " the area that quality ÷ is found out by predetermined size=base weight (g/m is utilized2) " formula calculate, so as to find out baseWeight.
[mathematical expression 1]
Distance between fiber
(measuring method for constituting the fiber number of fiber)
In the section shape for measuring fiber by electron microscope etc., the sectional area of fiber is measured (if a variety of trees of utilizationThe fiber that rouge is formed, then be the sectional area of each resin component) while, resin is determined by DSC (differential thermal analysis device)Type (in the case where various kinds of resin, also substantially determines ingredient ratio), and calculated specific gravity simultaneously calculates fiber number.For example, if only by PETThe staple fiber of composition, then look first at section, calculates its sectional area.Later, by being measured using DSC, thus according to moltenPoint, peak shape identify that it is made of oligomict resin, and it is PET core.Later, using the density of PET resin and sectional area,The quality for calculating fiber, thus calculates fiber number.
It, can be without particular limitation using usually used in such article as the fiber for constituting non-woven fabrics of the inventionFiber.Such as can enumerate: heat fusion property sheath-core type conjugate fiber, thermally extensible fiber, non-thermally extensible fiber, heat-shrinkable are fineThe various fibers such as dimension, non-thermal contraction fiber, three-dimensional crinkled fibre, potential crinkled fibre, doughnut.Particularly preferably there is heatPlastic resin.In addition, non-thermally extensible fiber and non-thermal contraction fiber preferably heat fusion property.The composite fibre of core-sheath-type canIt can also be eccentric core-sheath-type for concentric core-sheath-type, can also be parallel type, can also be abnormal shape, but preferably concentric core sheathType.In the manufacture of the fiber and non-woven fabrics, liquid film crack agent or liquid film cracking agent and phosphate type anionic surface it is livingProperty agent in the fibre containing can be carried out in any process.For example, fiber that can be usually used in the spinning of fiberWith the mixture for cooperating the agent of liquid film cracking, liquid film cracking agent and phosphatic type anionic surfactant in spinning oil and appliedCloth；The agent of liquid film cracking, liquid film cracking agent and phosphatic type yin can also be cooperated in the fiber oil agent before and after the stretching of fiberThe mixture of ionic surface active agent is simultaneously coated.At the usually used fiber of the manufacture in non-woven fabricsManage agent in cooperation liquid film cracking agent, phosphate type anionic surfactant and be coated on fiber, can also be in non-woven fabricsAfter applied.
Non-woven fabrics of the invention is comprising liquid film cracking agent or in the anionic surface for wherein further including phosphate typeActivating agent, therefore various fibre structures are coped with, it is remaining to liquid to inhibit more excellent.Therefore, even if applying to non-woven fabrics bigQuantity of fluid also ensures that interfibrous transparent liquid access, liquid permeability are excellent always.Distance and liquid between fiber are not will receive as a result,Film forms the limitation of problem, can assign various functions to non-woven fabrics.For example, may include 1 layer, it also may include 2 layers or moreMultilayer.In addition, the shape of non-woven fabrics can be flat, a surface side or two surface sides can also be set as to concave-convex, it can also be rightThe base weight or density of fiber apply various change.
It, can also be to scheme shown in Fig. 1~4 when applying the situation of liquid film cracking agent to the non-woven fabrics with concaveconvex shapeCase, any other pattern and containing liquid film crack agent.Typically, if there is no the film sheets in gap and surface to exist by surfaceThe surface liquid flowing of the nonwoven fabric sheet in gap compares, then when the generally hydrophily of the sheet material, nonwoven fabric sheet is madeGo out more hydrophilic performance for sheet material overall performance, and liquid flowing shortens compared with film sheet.On the other hand, sheet material is generally hydrophobicProperty when, nonwoven fabric sheet goes out more hydrophobic performance as sheet material overall performance, and liquid flowing is elongated compared with film sheet.It is based onThe theory of Cassie-Baxter (moves well and smokes work, " super water repellent and super hydrophilic-its structure and application-", rice field is published, at the beginning of 2009Version, p38 are recorded).Compared with flat non-woven fabrics, which generates more significantly in the situation of the non-woven fabrics of concaveconvex shape.Therefore, the present invention plays effect more significant than flat non-woven fabrics in the situation of concave-convex non-woven fabrics.Make with concave-convexWhen the non-woven fabrics of shape contains liquid film cracking agent, it can make to configure containing liquid film cracking agent containing portion at the top of protrusion, make recess portion bottomPortion configures non-containing portion without containing liquid film cracking agent.At this point, there are the napex of raised part have the above-mentioned pattern containing portion,The bottom of above-mentioned recess portion have the above-mentioned non-pattern containing portion, raised part and above-mentioned recess portion consistent and above-mentioned containing portion with it is above-mentionedIt is non-to contain consistent pattern in portion etc..Thereby, it is possible to realize high-caliber descending liquid body residual in the protrusion for being easy to contact with skin, andAnd even if the resistant to liquids mobility on surface also can be improved for concave-convex non-woven fabrics.In addition, for the coated pattern, byWhen liquid film cracking agent is coated on the situation of the non-woven fabrics with concaveconvex shape by the mode of printings such as flexographic printing mode, due to protrusionContacted with print roller, so from the viewpoint of manufacturing method it is also preferred that.When protrusion is with situation consistent containing portion, Fig. 8~The pattern containing portion of non-woven fabrics shown in 10 is same or like with Fig. 1.Similarly, non-woven fabrics shown in Figure 11~13 containsThe pattern in portion is same or like with Fig. 3, and the pattern containing portion of non-woven fabrics shown in figure 15 is same or like with Fig. 2 (A).
In turn, non-woven fabrics of the invention by liquid film cracking agent effect and liquid permeability is excellent, therefore, for suctionFor the combination of acceptor, option range also expands.In addition, liquid film cracking agent when non-woven fabrics of the invention includes multilayer can containHave in all layers, it can also be containing in a part of layer.Preferably at least containing in the layer of direct receptive liquid side.ExampleSuch as, using non-woven fabrics of the invention as in the case where the surficial sheets of absorbent commodity, preferably at least in skin contact layer sideLayer in containing liquid film crack agent.
About non-woven fabrics of the invention, preferably liquid film cracking agent weighting is present near at least part of fiber interweaving pointOr near fibre fusion point." lay particular stress on and exist " of liquid film cracking agent described herein refers to: not in the fiber for constituting non-woven fabricsWhole surface be equably attached with liquid film cracking agent state, but with the surface of each fiber compared with lay particular stress on be attached to fiber hand overKnit the state near a little or near fibre fusion point.Specifically, may be defined as: (between intertwined point or being fused with fiber surfaceFiber surface between point) it compares, the concentration of the liquid film cracking agent near intertwined point, fusion points is higher.At this point, being present in fiberLiquid film cracking agent of the intertwined point nearby or near fibre fusion point can also adhere to as follows: with fiber interweaving point or fibreCentered on tieing up fusion points, interfibrous space is partly covered.The concentration of liquid film cracking agent near intertwined point, fusion points is denseerBetter.The concentration according to used liquid film crack the type of agent, the type of used fiber, mixed with other preparations whenEffective component ratio etc. and change, therefore can not lump together, but from the viewpoint of playing above-mentioned liquid film cracking role, can fitWork as decision.
Since the weighting of liquid film cracking agent exists, it is easier to show liquid film cracking role.That is, fiber interweaving point is attachedClose or fibre fusion point is nearby the position for being particularly easy to generate liquid film, therefore, by being present in more liquid films cracking agentThe position directly acts on liquid film to become easy.
The weightings presence of such liquid film cracking agent is preferably near the fiber interweaving point of non-woven fabrics entirety or fibre fusion30% or more near point generates, and more preferably generates with 40% or more, further preferably generates with 50% or more.In non-woven fabrics,When fiber interweaving point or the shorter mutual distance of fibre fusion point, interfibrous space is small and is particularly easy to generate liquid film.Therefore,If near the fiber interweaving point when interfibrous space is smaller or fibre fusion point property selected around lay particular stress on that there are liquid filmsCracking agent, then particularly effectively show liquid film cracking role, so it is preferred that.In addition, it is as described above selectively partiallyIn the presence of weight, liquid film cracking agent is preferably improved between the coverage rate in space lesser fiber and is reduced to biggish fibreThe coverage rate in space between dimension.Thereby, it is possible to effectively show in capillary while keeping the liquid permeability of non-woven fabricsPower is big and is easy to produce the cracking role of the part of liquid film, and the remaining effect of liquid for reducing non-woven fabrics entirety is got higher.Herein," space between lesser fiber " refers to: relative to using distance between fiber calculated by above-mentioned (measuring method of distance between fiber)And space between the fiber with distance between 1/2 fiber below.
(confirmation method of the weighting existence of liquid film cracking agent)
The weighting existence of above-mentioned liquid film cracking agent can be confirmed by the following method.
Firstly, non-woven fabrics is cut into 5mm × 5mm, and sample table is installed on using carbon ribbon.By sample table with no steamingThe state of plating is put into scanning electron microscope (S4300SE/N, Hitachi Co., Ltd manufacture), be set as low vacuum orVacuum state.Due to using annular reflection electronic detectors (accessory) to be detected, thus the atomic number the big then easierRelease reflective electron, therefore, coated with comprising it is more with main composition polyethylene (PE), the carbon of polypropylene (PP), polyester (PET)Therefore the part whitening color of the liquid film cracking agent of atom, the hydrogen atom oxygen atom bigger compared to atomic number, silicon atom can lead toWhiteness is crossed to confirm and lay particular stress on existing state.It should be noted that atomic number is bigger or adhesion amount is more about its whiteness,Then whiteness more increases.
In addition, the commonly used method of such article can be used when manufacturing non-woven fabrics of the invention.For example, conductCarding method, air laid, spun-bond process etc. can be used in the forming method of web.It, can as the non-woven fabrics method of webUsing the usually used various non-woven fabrics methods such as spun lacing method, Needling, chemical adhesion, dotted embossing processing.Wherein, fromFrom the perspective of skin sense of touch, preferably hot-wind nonwoven cloth, spun-bonded non-woven fabrics.So-called herein " hot-wind nonwoven cloth " refers to: passing throughThe process (hot wind treatment process) that 50 DEG C or more of fluid, such as gas or vapor are blowed to web or non-woven fabricsAnd the non-woven fabrics manufactured.In addition, " spun-bonded non-woven fabrics ", which refer to, utilizes stacking non-woven fabrics manufactured by spun-bond process.This means that: noIt only includes only by non-woven fabrics manufactured by this process, also includes adding this process to by non-woven fabrics made by other methodsAnd the non-woven fabrics that manufactures or certain process is carried out after this process and the non-woven fabrics that manufactures.In addition, non-woven fabrics of the invention is simultaneouslyIt is not limited to and is only made of hot-wind nonwoven cloth or spun-bonded non-woven fabrics, also include by hot-wind nonwoven cloth, spun-bonded non-woven fabrics and other nothingsThe fibre sheet materials such as woven fabric or membrane material carry out product made of Composite.
In the manufacturing method of non-woven fabrics of the invention, as described above as carry out non-woven fabrics after coating liquid film crack agentSituation when, can enumerate: comprising liquid film cracking agent solution in impregnated raw material non-woven fabrics method.Above-mentioned solution can for example arrangeIt lifts and utilizes solution made of the cracking agent of solvent dilution film etc. (hereinafter, the solution is also referred to as liquid film cracking agent solution).AsThe solvent being diluted can enumerate the alcohol such as ethyl alcohol.In addition, as other methods, can enumerate: to the independent coating fluid of raw material non-woven fabricsThe method of the solution of film cracking agent or coating comprising the cracking agent of above-mentioned liquid film.It should be noted that can also be comprising above-mentionedThe anionic surfactant of mixed phosphate ester type in the solution of liquid film cracking agent.Liquid film cracking agent and phosphate in this caseThe content ratio of the anionic surfactant of type is preferably as described above.As above-mentioned solvent, can use without particular limitationThe liquid film cracking agent that water solubility can be made minimum is moderately dissolved or dispersed in solvent and makes its emulsification to be easy coatingIn the solvent of non-woven fabrics.For example, ethyl alcohol, methanol, acetone, hexane etc. can be used to have as the solvent for making liquid film cracking agent dissolutionSolvent, or in the case where emulsion is made can also be used water as solvent or decentralized medium certainly, as making its emulsificationWhen used emulsifier, can enumerate: comprising alkylphosphonate, fatty acid amide, alkyl betaine, sodium alkylsulfosuccinates etc.Various surfactants.It should be noted that raw material non-woven fabrics refers to the non-woven fabrics before coating liquid film cracking agent, as itManufacturing method, can be with no particular limitation using usually used manufacturing method as described above.
As the method being coated to above-mentioned raw materials non-woven fabrics, the manufacturer of the non-woven fabrics can be used with no particular limitationMethod used in method.Such as can enumerate: based on spraying coating, the coating based on slit type coater, based on intaglio plate mode,Soft version mode, coating of impregnation method etc..
Go out from the viewpoint of weighting presenceization of the liquid film cracking agent near above-mentioned fiber interweaving point or near fibre fusion pointHair, the raw material non-woven fabrics after being preferably coated on non-woven fabrics, do not impregnate more preferably but the method that is coated on raw material non-woven fabrics.It appliesIn the method for cloth, from the viewpoint of becoming apparent from the weighting presenceization of liquid film cracking agent, particularly preferably in the way of soft versionCoating method.
In addition, various non-woven fabrics can be used with no particular limitation as raw material non-woven fabrics.Especially from holding liquid film crackingFrom the perspective of the weighting presenceization of agent, preferably fiber interweaving point be hot-melted or has been thermally compressed, more preferably using by upperState the non-woven fabrics that hot wind is handled or fiber is thermally compressed by heat embossing each other and is obtained.
When making liquid film cracking agent be attached to fiber, preferably made in the form of the fibre finish comprising liquid film cracking agentWith." fibre finish " described herein as refers to: that is, using water and surfactant etc., by the minimum oily of water solubilityLiquid film cracking agent emulsifies etc., so that the state for being easy to carry out coating processing to raw material non-woven fabrics and/or fiber be made and obtainSubstance.In the fibre finish for applying liquid film cracking agent, the containing ratio of liquid film cracking agent is relative to fiber treatmentThe quality of agent is preferably 50 mass % or less.As a result, fibre finish can be made into become oily ingredient liquid film cracking agent existThe state of stable emulsion in solvent.From the viewpoint of stable emulsion, the containing ratio of liquid film cracking agent is relative to fiber treatmentThe quality of agent is more preferably 40 mass % or less, further preferably 30 mass % or less.In addition, the liquid film cracking agent after coatingWith the viscosity of appropriateness, the mobile viewpoint to realize the weighting presenceization of the cracking agent of the liquid film in above-mentioned non-woven fabrics goes out on fiberHair, is preferably set to above-mentioned containing ratio.From the viewpoint of showing sufficient liquid film cracking effect, liquid film cracking agent containsHave ratio relative to the quality of fibre finish be preferably 5 mass % or more, more preferably 15 mass % or more, further preferablyFor 25 mass % or more.It should be noted that the fibre finish containing liquid film cracking agent can also not hinder liquid film to crackContain other preparations in the range of the effect of agent.For example, it is also possible to contain the anionic surfactant of above-mentioned phosphate type.The content ratio of the anionic surfactant of liquid film cracking agent and phosphate type in this case is preferably as described above.In addition,Containing used antistatic agent, antifriction liniment in fiber process or non-woven fabrics can also be assigned appropriate hydrophilicHydrophilic agent, the emulsifier for assigning emulsion stability etc..
As the preferred embodiment of non-woven fabrics of the invention, the concrete example of the non-woven fabrics with concaveconvex shape is saidIt is bright.
For example, the non-woven fabrics shown in Fig. 8 for applying heat-shrinkable fiber can be enumerated (first implements pattern).Shown in Fig. 8Non-woven fabrics 10 include upper surface 1A (skin contact layer when surficial sheets are made) side upper layer 11 and lower surface 1B (table is madeNon- skin contact layer when facesheet) side this two layers of lower layer 12.Add in addition, implementing embossing in a thickness direction from upper surface 1AWork (extruding) and by 2 layers engagement (will implement embossing processing part be known as be embossed recess portion (concave joint portion) 13).Lower layer12 be the layer for showing the thermal contraction of heat-shrinkable fiber.Upper layer 11 is the layer comprising non-thermal contraction fiber, non-thermal contractionFiber is locally engaged at concave joint portion 13.Non-thermal contraction fiber is not limited to shrink because of heating completelyFiber, also comprising the fiber that is shunk so that the degree of the thermal contraction of the heat-shrinkable fiber of lower layer 12 will not be hindered.MakeFor the non-thermal contraction fiber, from the viewpoint of being made non-woven fabrics based on heat, preferably non-thermal contraction heats condensating fiber.
The non-woven fabrics 10 can for example pass through note in paragraph [0032]~[0048] of Japanese Unexamined Patent Publication 2002-187228 bulletinThe raw material of load and manufacturing method are manufactured.In the manufacture, such as from upper layer side 11 to the layer on upper layer 11 and lower layer 12After stack implements embossing processing etc., it is heat-shrinked heat-shrinkable fiber by heat treatment.At this point, due to the contraction of the fiberAdjacent embossing part is caused to be pulled each other, mutual interval reduces.By the deformation, the fiber on upper layer 11 is to be embossed recess portion13 swell for basic point and to the upper surface side 1A, form protrusion 14.Alternatively, in the state for extending the lower layer 12 for showing to be heat-shrinkedThe stacked on layer of lower layer, implements above-mentioned embossing processing.Later, if releasing the elongation state of lower layer 12,11 side of upper layer is to upper surfaceIt swells and forms protrusion 14 in the side 1A.As the embossing processing, the usually used side such as heat embossing processing, ultrasonic wave embossed can be passed throughMethod carries out.In addition, about two layers of engagement, or used the joint method of bonding agent.
About the non-woven fabrics 10 manufactured in this way, at embossing recess portion (concave joint portion) 13, upper layer 11 is extruded into downLayer side 12 and engaged.The embossing recess portion 13 is formed on the in-plane of non-woven fabrics 10 in scatterplot shape, and recess portion is embossed13 parts surrounded are protrusion 14 made of the protuberance of above-mentioned upper layer 11.Protrusion 14 is three-dimensional three-dimensional shape, such as forms domeShape.The state thicker than lower layer 12 as fiber of protrusion 14 is formed by using manufacturing method as described above.Protrusion 14Inside can be filled up by fiber as shown in Figure 8, it is possible to have hollow portion made of upper layer 11 is separated with lower layer 12.It is embossed recess portion13 and the configuration of protrusion 14 can be set to arbitrary disposition, such as grid configuration can also be set as.It configures, can enumerate as grid: willThe a plurality of column comprising multiple embossing recess portions 13 are arranged, and the embossing recess portion 13 in each column to be spaced in adjacent column wrong to each otherThe configuration etc. of half of the spacing in position.In addition, the plan view shape about embossing recess portion 13 also can be set to circle in the case where dottedShape, elliptical shape, triangle, square shape, other multilateral shapes, can any setting appropriate.In addition, embossing recess portion 13 in addition toExcept dotted, threadiness also can be set to.
Non-woven fabrics 10 has protrusion 14 in the upper surface side 1A and is embossed the male and fomale(M&F) of recess portion 13, therefore to in-planeShape recovery when elongation, compressive deformation when compressing to thickness direction are excellent.In addition, passing through upper layer 11 as described aboveFiber protuberance and become more fluffy non-woven fabrics.The user contacted as a result, with non-woven fabrics 10 can feel soft and relaxSuitable skin sense of touch.In addition, it is that non-skin connects that non-woven fabrics 10, which is used as by skin contact layer, following surface 1B of upper surface 10A,The surficial sheets of contacting surface and in the absorbent commodity that is fitted into, contact skin due to the bumps of protrusion 14 and embossing recess portion 13The gas permeability of surface side becomes excellent.
In addition, about non-woven fabrics 10, the effect of agent is cracked by above-mentioned liquid film or liquid film cracks agent and phosphate typeThe synergistic effect of anionic surfactant, liquid residual tail off.Thereby, it is possible to further increase to utilize male and fomale(M&F) and embossingThe liquid permeability that dense portion obtains.
It should be noted that non-woven fabrics 10 is not limited to 2 layers of structure of upper layer 11 and lower layer 12, can also further have itHis layer.For example, single-layer or multi-layer can be configured between upper layer 11 and lower layer 12, it can also be in the upper surface of non-woven fabrics 10The side 10A, the lower surface side 10B configure single-layer or multi-layer.The single-layer or multi-layer can be the layer with heat-shrinkable fiber, can also be withFor the layer with non-thermal contraction fiber.
As other concrete examples that non-woven fabrics of the invention is made to non-woven fabrics obtained by concaveconvex shape, by non-woven fabrics 20,30,40,50,60,70 (the second~the 7th implementation patterns) are shown in following.
Firstly, the second non-woven fabrics 20 for implementing pattern is the double-layer structure with hollow portion 21 as shown in Figure 9.Random layer is equalInclude thermoplastic fibre.In non-woven fabrics 20, has and be locally hot-melted the first non-woven fabrics 20A and the second non-woven fabrics 20BJoint portion 22.In the disengaged portion that joint 22 surrounds, the first non-woven fabrics 20A has multiple to leaving the second non-woven fabricsThe direction of 20B is prominent and in the internal protrusion 23 with hollow portion 21.Joint portion 22 is between adjacent protrusion 23,23Recess portion, constitute the bumps of the first face 1A together with protrusion 23.The non-woven fabrics 20 can be formed by commonly used approach.For example, being bonded the second non-woven fabrics after carrying out concave-convex figuration to the first non-woven fabrics 20A by the engagement of 2 concave-convex rollers and obtainingTo non-woven fabrics 20.From the viewpoint of carrying out figuration to non-woven fabrics by the engagement of concave-convex roller, the first non-woven fabrics 20A and secondNon-woven fabrics 20B preferably includes the hot melt condensating fiber of non-thermally extensible and non-thermal contraction.
Non-woven fabrics 20 is for example as being laminated in the first face 1A on absorber towards the surficial sheets of skin contact layer sideIn use, the liquid permeability from the first face side 1A to the second face side 1B is excellent.Specifically, liquid is saturating via hollow portion 21It crosses.In addition, the body pressure of wearer can be applied to protrusion 23, the liquid being present at protrusion 23 is directly mobile to the second non-woven fabrics 3.The liquid residual of the first face side 1A is less as a result,.Such effect for acting through above-mentioned liquid film cracking agent or liquid film crackingThe synergistic effect of the anionic surfactant of agent and phosphate type and played with higher persistent levels.Even if that is,In the case where using for a long time, there is a large amount of excretions, liquid can be still ensured by liquid-sheet disintegration penetrates path, therefore,Above-mentioned such liquid permeability can be given full play of.
Then, the non-woven fabrics 30 that third implements pattern, which such as has shown in Figure 10 (A) and (B), includes thermoplastic fibre and two sidesThe first fibrous layer 301 equipped with concaveconvex shape.Figure 10 (A) indicates the non-woven fabrics for 1 layer of structure being only made of the first fibrous layer 30130A.Figure 10 (B) indicates the second fibre for having the first fibrous layer 301 and flanking conjunction along the second face 1B of the first fibrous layer 301Tie up the non-woven fabrics 30B of 2 layers of structure of layer 302.Hereinafter, each non-woven fabrics is concretely demonstrated.
In non-woven fabrics 30A shown in Figure 10 (A) (the first fibrous layer 301), to the first face 1A the first protruding portion 31 outstandingWith it is alternately continuous on different directions intersected when overlooking non-woven fabrics 30A to the second face side 1B the second protruding portion 32 outstandingConfiguration.First protruding portion 31 and the second protruding portion 32 have the inner space open in respective opposite side, which formsRecess portion 33,34 in the face.The first face 1A is the concaveconvex shape of the first protruding portion 31 and recess portion 34 as a result,.In addition, the second face 1BIt is the concaveconvex shape of the second protruding portion 32 and recess portion 33.In addition, non-woven fabrics 30A has the first protruding portion 31 and the second protruding portion32 wall portions 35 being connected.Wall portion 35 forms the wall surface of the first protruding portion 31 and the respective inner space of the second protruding portion 32, andThere is cyclic structure in in-plane.The fiber of wall portion 35 is constituted in any position of cyclic structure along by the first protruding portion31 and second protruding portion 32 link direction have fiber orientation.Wall portion generates toughness as a result,.As a result, non-woven fabrics 30AIt is restorative also excellent even if applying pressure with resiliency appropriate, it can avoid the crumple of each inner space.In addition, by twoFace is prominent and high to the dispersibility of body pressure, and also inhibits contact area, thus skin soft-touch and resistant to liquids it is reflow excellent.Any surface can be set as skin contact layer side and be used as the surficial sheets of absorbent commodity by non-woven fabrics 30A, can be to absorbent commoditySkin sense of touch and the excellent resistant to liquids for assigning resiliency appropriate or softness are reflow.
Non-woven fabrics 30B shown in Figure 10 (B) is the concave-convex configuration the along the second face side 1B of above-mentioned first fibrous layer 301Made of two fibrous layers 302 and engagement.First face 1A is set as skin contact layer for non-woven fabrics 30B is typical and is used.?The concaveconvex shape of the first face side 1A of non-woven fabrics 30B, the first protruding portion 31 and recess portion 34 of above-mentioned first fibrous layer 301 extends,Wall portion 35 configured with the cyclic structure between the first protruding portion 31 and recess portion 32.Therefore, non-woven fabrics 30B also has above-mentionedThe fiber orientation of one fibrous layer 301, as a result, wall portion generate toughness and bumps it is restorative excellent.
In addition to this, non-woven fabrics 30B has carried out figuration, the nonwoven of web by the hot wind processing using hot wind processCloth and two layers of engagement, thus it is whole fluffy and weight per unit area is low.In particular, the engagement of two fibrous layers 301 and 302 is logicalIt crosses the mutual heat fusion of the fiber carried out using hot wind and is engaged, therefore between the fiber of the bonding part of fiber interlayerGap is formed, even if it is also fast to lead to liquid speed degree in the recess portion 32 for becoming joint portion.In addition, first in the first fibrous layer 301 is prominentThe second face side 1B of the napex in portion 31, the fibre density with the second fibrous layer 302 are lower than the first fibrous layer 301 and the second fiberThe part 36 of the fibre density of the other parts of layer 302.By the presence of the low part 36 of the fibre density, even if to be low negativeLotus, the first protruding portion 31 of the first fibrous layer 301 is also easy recess, therefore the resiliency of non-woven fabrics 30B can be improved.Non-woven fabricsThe first face side 1A (i.e. 301 side of the first fibrous layer) is preferably set as skin and connect by 30B when being used as the surficial sheets of absorbent commodityContacting surface side.
In non-woven fabrics 30 (30A and 30B), also by the effect or liquid film cracking agent of the cracking agent of above-mentioned liquid film and phosphorusThe synergistic effect of the anionic surfactant of acid esters type and ensure transparent liquid path always.It is close for fibre diameter, fiber as a result,The scope of design of degree becomes wide.
When manufacturing non-woven fabrics 30 (30A and the 30B), such as can be used to web one side control hot blast temperature and wind speedThe hot wind processing of multistage hot wind processing is carried out on one side.For example, non-woven fabrics 30A (the first fibrous layer 301) can be used Japan specialOpen No. 2012-136790 paragraph [0031] and [0032] documented by manufacturing method.In addition, carrying out concave-convex figuration as to netSupporting mass, it is preferable to use with solid protrusion and opening portion supporting mass.For example, Japanese Unexamined Patent Publication 2012- can be usedSupporting mass shown in No. 149370 Fig. 1 and 2, supporting mass shown in Japanese Unexamined Patent Publication 2012-149371 Fig. 1 and 2.In addition,Non-woven fabrics 30B (the stacking non-woven fabrics of the first fibrous layer 301 and the second fibrous layer 302) can be by above-mentioned first fibrous layer 301Hot wind process in be laminated into the web for the second fibrous layer 302 and manufactured.For example, Japanese Unexamined Patent Publication 2013- can be usedManufacturing method documented by paragraph [0042]~[0064] of No. 124428 bulletins.From by hot wind processing to non-woven fabrics 30A andFrom the perspective of 30B carries out figuration, the first fibrous layer 301 and the second fibrous layer 302 are both preferably non-thermally extensible and non-thermal receiptsThe hot melt condensating fiber of contracting.
Then, the 4th implements the non-woven fabrics 40 of pattern as shown in figure 11, comprising 1 layer containing thermoplastic fibre, and theOn one side the side 1A have the recess portion 42 of protrusion 41 by semi-circular cylindrical and the lateral margin configuration along the protrusion 41 be alternately arranged it is multiple andAt shape.The concave bottom 43 comprising non-woven fabrics fiber is configured in the downside of recess portion 42.The fibre density of concave bottom 43Lower than protrusion 41.In the non-woven fabrics 30, formation other fibrous layers 45 (referring to Fig.1 2) can also be folded on protrusion 41.IfNon-woven fabrics 40 is set into absorbent commodity as using the first face side 1A as the surficial sheets of skin contact layer side, then protrusion 41Received liquid is easy to the movement of recess portion 42, and is easy in recess portion 43 to the movement of the second face side 1B.As a result, liquid residual compared withInhibit the sticky sense of skin less.
In non-woven fabrics 40, also by the cracking agent of above-mentioned liquid film or liquid film cracking agent and the anion table of phosphate typeThe effect of face activating agent and ensure transparent liquid path always.Become wide for fibre diameter, the scope of design of fibre density as a result,.
Such non-woven fabrics 40, which can blow the fluids such as hot wind by the part that recess portion 42 is made for web, moves fiberIt moves and is formed.The fibre density of concave bottom 43 can be made lower than its periphery as a result,.
Then, the 5th non-woven fabrics 50 for implementing pattern as shown in figure 13, has the band by extending along unidirectional (Y-direction)Concaveconvex structure made of the convex strip portions 51 of shape and recessed bar portion 52 are alternately arranged.In addition, in the thickness direction of the nonwoven fabric sheet 50On, above-mentioned concaveconvex structure can be divided into top area 50A, bottom section 50B and positioned at the lateral region 50C between them3 equal parts.
Non-woven fabrics 50 has multiple heat fuses 55 for constituting the mutual intersection point of fiber 54.If being conceived to 1 composition fiber54, then it constitutes fiber 54 as shown in figure 14, there are 2 small diameter portions small by fibre diameter between adjacent fused portion 55The large-diameter portion 57 of 56 clampings.The flexibility of non-woven fabrics 50 improves as a result, and skin sense of touch becomes good.In addition, with fiber unitThe contact area of meter and skin reduces and obtains more good dry feeling.In addition, from the viewpoint of flexibility, from small diameter portion 56The change point 58 changed to the large-diameter portion 57 is preferably in the close fused portion 55 of the adjacent mutual interval T of fused portion 55,551/3 in the range of (range of the T1 and T3 of Figure 14).It should be noted that the small diameter portion 56 and the large-diameter portion 57 clamped by itCombination can also interval T in there are multiple.The composition of small diameter portion 56 and large-diameter portion 57 in such composition fiber byFiber is stretched and is formed when the cutter groove stretch process in formation convex strip portions 51 and recessed bar portion 52.As fiber used at this time,The preferably high fiber of degree of drawing.It such as can enumerate: be remembered via the paragraph [0033] of Japanese Unexamined Patent Publication 2010-168715 bulletinThe treatment process of load and obtain, the crystalline state of resin change because of heating to make length stretch thermally extensible fiberDeng.
In turn, from the viewpoint of liquid permeability, the water-wetness of the preferred small diameter portion of non-woven fabrics 50 is less than the parent of large-diameter portionWater degree.The difference of the water-wetness can contain draftability ingredient (hydrophobic ingredient) and shape by making the fibre finish for being attached to fiberAt.Particularly preferably contain draftability ingredient and hydrophilic composition.Specifically, if fiber passes through above-mentioned cutter groove stretch processIt stretches, then draftability ingredient small diameter portion 35 made of stretching extends and it is made to generate the difference of water-wetness between large-diameter portion.In large-diameter portion, it is not easy the hydrophilic composition extended and is detained and water-wetness is made to be higher than small diameter portion.As above-mentioned draftability ingredient, such asIt can enumerate that glass transition temperature is low and strand has the silicone resin of flexibility, as silicone resin, it is preferable to useSi-O-Si chain is set as to the polysiloxane of main chain.
In addition, the fibre density of the preferred sidewall areas 30C of non-woven fabrics 50 is lower than from the viewpoint of aforesaid liquid permeabilityThe fibre density of top area 30A, bottom section 30B.
In non-woven fabrics 50, also by above-mentioned liquid film cracking agent or liquid film cracking agent and the anion of phosphate typeThe effect of surfactant and ensure transparent liquid path always.Become wide for fibre diameter, the scope of design of fibre density as a result,.
Non-woven fabrics 50 can be used alone, and can also engage with flat fibrous layer and stacking non-woven fabrics is made, can be with layerIt is laminated in the presence of concave-convex fibrous layer and is made and carries out integrated stacking non-woven fabrics along the bumps.For example, can be layered inTwo implement on the second non-woven fabrics in the non-woven fabrics 20 of pattern (Fig. 9), can also be layered in third and implement pattern (Figure 10 (A))Non-woven fabrics 30A, the 4th implement pattern (Figure 11 or Figure 12) non-woven fabrics 40.
Then, the 6th non-woven fabrics 60 for implementing pattern has the concaveconvex shape comprising thermally extensible fiber.As shown in figure 15,The first face side 1A is concaveconvex shape.On the other hand, the second face side 1B or it is flat or compared with the first face side 1A concave-convex degree poleIt is small.Specifically, the concaveconvex shape of the first face side 1A has multiple protrusions 61 and surrounds its linear recess portion 62.Recess portion 62 hasThere is the composition fiber of non-woven fabrics 60 to be crimped or crimp made of being bonded adhesive portion, and thermally extensible fiber is the shape not extendedState.Protrusion 62 be thermally extensible fiber carry out thermal stretching and to the first face side 1A swell part.Therefore, protrusion 62 becomes fiberDensity is lower than recess portion 62 and fluffy part.In addition, linear recess portion 62 is configured to clathrate, in each region divided by gridIt spreads and is configured with protrusion 61.Non-woven fabrics 60 and the contact area of wearer's skin are inhibited as a result, to be effectively prevented boredHeat, scytitis.In addition, the protrusion 61 contacted with skin is fluffy because of the thermal stretching of thermally extensible fiber, soft flesh is realizedSkin sense of touch.It should be noted that non-woven fabrics 60 can be single layer structure, or 2 layers or more of multilayered structure.For example,In the case where 2 layers of structure, the layer of the second face side 1B preferably do not include thermally extensible fiber or with concaveconvex shapeThe layer of the side 1A is less compared to the content of thermally extensible fiber on one side.In addition, two layers preferably carries out in the crimping adhesive portion of recess portion 62Engagement.
In non-woven fabrics 60, also by above-mentioned liquid film cracking agent or liquid film cracking agent and the anion of phosphate typeThe effect of surfactant and ensure transparent liquid path always.Become wide for fibre diameter, the scope of design of fibre density as a result,.
Such non-woven fabrics 60 can be manufactured by the following method.Firstly, being directed to web, processed by heat embossingAnd form linear recess portion 62.At this point, in recess portion 62, thermally extensible fiber be crimped or welding and in the state of non-thermal stretchingIt is fixed.Next, being processed by hot wind, thermally extensible fiber present in the part other than recess portion 61 extends and forms protrusion61, become non-woven fabrics 60.In addition, the composition fiber as non-woven fabrics 60, can be above-mentioned thermally extensible fiber and non-thermal stretchingThe mixed silk floss of the heat sealability fiber of property.Fiber is constituted as these, Japanese Unexamined Patent Publication 2005-350836 bulletin can be used for exampleParagraph [0013], record in [0037]~[0040] fiber, Japanese Unexamined Patent Publication 2011-1277258 bulletin paragraph[0012], the fiber etc. recorded in [0024]~[0046].
Then, the 7th non-woven fabrics 70 for implementing pattern is comprising 71 He of upper layer containing thermoplastic fibre as shown in figure 16The stacking non-woven fabrics of lower layer 72.Convex shaped part 73 and concavity 74, and 74 aperture of concavity are arranged alternately on upper layer 71.Concavity74 fibre density is lower than the fibre density of convex shaped part 73.Being alternately repeated the region configured with convex shaped part 73 and concavity 74 can be withIt is present in a part on upper layer 71, can also exist on entirety.In alternate repetition configured with convex shaped part 73 and concavity 74When region is present in the situation of a part on upper layer, which is preferably in the table for using non-woven fabrics 70 as absorbent commodityBecome the part of liquid receiving area domain (excretory portion corresponding region) when facesheet.On the other hand, the substantial fibre density of lower layer 72 is uniform.The alternate repetition that lower layer 72 at least corresponds to upper layer 71 is laminated configured with the region of convex shaped part 73 and concavity 74.As a result, withoutWoven fabric 70 has fluffy resiliency because of the fibre density of convex shaped part 73 height, if being used as the surficial sheets of absorbent commodity,It becomes difficult to generate liquid reflux.In addition, non-woven fabrics 70 is since the fibre density of concavity 74 is low and is in aperture state, soIt is liquid permeability, especially excellent to the permeability of high viscosity liquid.
In non-woven fabrics 70, also by above-mentioned liquid film cracking agent or liquid film cracking agent and the anion of phosphate typeThe effect of surfactant and ensure transparent liquid path always.Become wide for fibre diameter, the scope of design of fibre density as a result,.
Such non-woven fabrics 70 can for example pass through the lower-left column of page 6 12 row~8th page of Japanese Unexamined Patent Publication 4-24263 bulletinMethod documented by 19 row of upper right column is manufactured.
Liquid film cracking agent of the invention and non-woven fabrics comprising liquid film cracking agent can flexible utilization its soft skin touchingsFeel with the remaining reduction of liquid and applied to various fields.For example, may be adapted to be used as sanitary napkin, panty liner, primaryProperty diaper, incontinence pad etc. for absorbing the surficial sheets from the absorbent commodity for the liquid that body is discharged, the second sheet material (configuresSheet material between surficial sheets and absorber), absorber, the cover sheets comprising absorber, leakproof sheet material or people wipeWipe sheet material, skin care sheet material and article cleaning piece (wiper) etc..Use non-woven fabrics of the invention as absorb, it is preferable to use the first layer side of the non-woven fabrics is as the opposite surface side of skin in the case where the surficial sheets of property article, the second sheet material.It, can as long as being not limited to non-woven fabrics it should be noted that liquid film cracking agent of the invention plays the role of that liquid film is made to crackTo be applied to the various fibrous materials such as woven fabric.
The base weight of web used in manufacture about non-woven fabrics of the invention, according to the particular use of target non-woven fabricsAnd select range appropriate.The base weight of final resulting non-woven fabrics is preferably 10g/m2Above and 100g/m2Hereinafter, particularly preferablyFor 15g/m2Above and 80g/m2Below.
For typical case, for absorb from body be discharged liquid absorbent commodity have surficial sheets, back-sheet, withAnd the absorber of liquid retainability of the clamping configuration between two sheet materials.When as non-woven fabrics of the invention being used as surficial sheetsAbsorber and back-sheet, can be without particular limitation using commonly used material in the technical field.For example, as suctionAcceptor can be used the fiber assembly formed by fibrous materials such as paper pulp fibers or in which the object for maintaining absorbable polymerAbsorber made of the covering of the cover sheets such as matter cotton paper, non-woven fabrics.As back-sheet, the film of usable thermoplastic resin,The opaque liquids such as the layered product of the film and non-woven fabrics or hydrophobic sheet material.Back-sheet can have water vapo(u)r transmission.It inhalesThe property received article can also have the various components being consistent with the particular use of the absorbent commodity.Such component is for this fieldIt is well known for technical staff.For example, in the case where absorbent commodity is used for disposable diaper, sanitary napkin,A pair of or two pairs or more three-dimensional shields can be configured in the left and right sides portion on surficial sheets.
About above-mentioned embodiment, the present invention discloses non-woven fabrics and absorbent commodity below in turn.
<1>
A kind of non-woven fabrics, have comprising liquid film cracking agent containing portion and without above-mentioned liquid film cracking agent it is non-containingPortion,
It is above-mentioned containing portion and the above-mentioned non-at least either containing in portion be arranged with being spaced from each other in nonwoven surface it is moreIt is a.
<2>
According to non-woven fabrics described in above-mentioned<1>, wherein above-mentioned liquid film cracking agent is to the liquid that surface tension is 50mN/mSpreading coefficient is 15mN/m or more.
<3>
A kind of non-woven fabrics, have comprising following compound C1 containing portion and without following compound C1 it is non-containingPortion,
It is above-mentioned containing portion and the above-mentioned non-at least either containing in portion be arranged with being spaced from each other in nonwoven surface it is moreIt is a.
[compound C1]
To surface tension be 50mN/m liquid spreading coefficient be 15mN/m or more compound.
<4>
According to non-woven fabrics described in above-mentioned<2>or<3>, wherein the cracking agent of above-mentioned liquid film or above compound C1's sprawlsCoefficient is more preferably 20mN/m or more, further preferably 25mN/m or more, particularly preferably 30mN/m or more.
<5>
The non-woven fabrics according to any one of above-mentioned<2>to<4>, wherein above-mentioned liquid film cracking agent or above compoundC1 is preferably 20mN/m to the interfacial tension for the liquid that surface tension is 50mN/m hereinafter, more preferably 17mN/m is hereinafter, into oneStep is preferably 13mN/m hereinafter, still more preferably for 10mN/m hereinafter, particularly preferably 9mN/m is hereinafter, especially preferably1mN/m is hereinafter, and be greater than 0mN/m.
<6>
The non-woven fabrics according to any one of above-mentioned<1>to<5>, wherein above-mentioned liquid film cracking agent or above compoundC1 includes the compound at least one kind of structure in the group being made of following structure X, X-Y and Y-X-Y.
Structure X indicates that general > C (A)-(C indicates carbon atom.In addition,<,>and-indicate associative key.It is same as below) ,-C(A)
2-、-C(A)(B)-、>C(A)-C(R
1)<、>C(R
1)-、-C(R
1)(R
2)-、-C(R
1)
2,>C<and-Si (R
1)
2O-、-Si(R
1)(R
2) any basic structure in O- repeat or combine siloxane chain or its mixing of structure made of two or moreChain.There is hydrogen atom in the end of structure X or selected from by-C (A)
3、-C(A)
2B、-C(A)(B)
2、-C(A)
2-C(R
1)
3、-C(R
1)
2A、-C(R
1)
3Or-OSi (R
1)
3、-OSi(R
1)
2(R
2)、-Si(R
1)
3、-Si(R
1)
2(R
2) composition group at least one kind of baseGroup.
Above-mentioned R1、R2Separately indicate hydrogen atom, alkyl, alkoxy, aryl or halogen atom.A, B is independentlyGround indicates the substituent group comprising oxygen atom or nitrogen-atoms.Multiple R are individually present in structure X1、R2, A, B situation when, their phasesIt is mutually identical or different.
Y is indicated comprising the atom in hydrogen atom, carbon atom, oxygen atom, nitrogen-atoms, phosphorus atoms, sulphur atom and is hadHydrophilic hydrophilic radical.It is same to each other or different when Y is multiple situation.
<7>
The non-woven fabrics according to any one of above-mentioned<1>to<6>, wherein above-mentioned liquid film cracking agent or above compoundC1 includes the organically-modified silicone of silicone-based surfactant, as the organically-modified silicone, comprising selected from by amino modified siliconKetone, epoxy-modified silicone, carboxy-modified silicone, glycol modification silicone, carbinol-modified silicone, (methyl) acrylic modified siliconKetone, sulfhydryl modified silicone, phenol modified silicone, polyether modified silicone, methyl styrene base modified silicone, long chain alkyl modified siliconKetone, high-grade aliphatic ester modified silicone, higher alkoxy modified silicone, higher fatty acid modified silicone and fluorine richness silicone compositionGroup in it is at least one kind of.
<8>
The non-woven fabrics according to any one of above-mentioned<1>to<7>, wherein above-mentioned liquid film cracking agent or above compoundC1 includes polyoxy alkylidene modified silicone, and the polyoxy alkylidene modified silicone is represented by by following formula [I]~[IV]Compound composition group in it is at least one kind of.
[change 191
[changing 20]
[changing 21]
[changing 22]
In formula, R31Indicate alkyl (preferably carbon number 1~20.Such as preferably methyl, ethyl, propyl, isopropyl, butyl,Amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl).R32Indicate singly-bound or alkylidene (preferably carbon number 1~20.Such asPreferably methylene, ethylidene, propylidene, butylidene), preferably indicate above-mentioned alkylidene.Multiple R31, multiple R32Respective phaseIt is mutually identical or different.M11Indicate the group with polyoxy alkylidene, preferably polyoxy alkylidene.As above-mentioned poly (oxyalkylene)Base can be enumerated: polyoxyethylene, polyoxypropylene, polyoxy butylidene or group made of being copolymerized these composition monomerDeng.M, n is separately 1 or more integer.Furthermore the symbol of these repetitive units is determined respectively in various [I]~[IV]It is fixed, it may not indicate same integer, it can also be different.
<9>
According to non-woven fabrics described in above-mentioned<1>, wherein above-mentioned liquid film cracking agent is to the liquid that surface tension is 50mN/mSpreading coefficient is greater than 0mN/m, and the interfacial tension of liquid for being 50mN/m to surface tension is 20mN/m or less.
<10>
A kind of non-woven fabrics, have comprising following compound C2 containing portion and without following compound C2 it is non-containingPortion,
It is above-mentioned containing portion and the above-mentioned non-at least either containing in portion be arranged with being spaced from each other in nonwoven surface it is moreIt is a.
[compound C2]
0mN/m is greater than to the spreading coefficient for the liquid that surface tension is 50mN/m, the liquid for being 50mN/m to surface tensionInterfacial tension be 20mN/m compound below.
<11>
According to non-woven fabrics described in above-mentioned<9>or<10>, wherein above-mentioned liquid film cracking agent or above compound C2 are to surfaceTension is that the interfacial tension of the liquid of 50mN/m is preferably 17mN/m hereinafter, more preferably 13mN/m is hereinafter, further preferably10mN/m hereinafter, particularly preferably 9mN/m hereinafter, especially preferably 1mN/m hereinafter, and be greater than 0mN/m.
<12>
The non-woven fabrics according to any one of above-mentioned<9>to<11>, wherein above-mentioned liquid film cracking agent or above compoundC2 is preferably 9mN/m or more to the spreading coefficient for the liquid that surface tension is 50mN/m, more preferably 10mN/m or more, furtherPreferably 15mN/m or more, and be 50mN/m or less.
<13>
The non-woven fabrics according to any one of above-mentioned<1>and<9>to<12>, wherein above-mentioned liquid film cracking agent or above-mentionedCompound C2 includes the compound at least one kind of structure in the group being made of following structure Z, Z-Y and Y-Z-Y.
Structure Z indicates general > C (A)-(C: carbon atom) ,-C (A)2-、-C(A)(B)-、>C(A)-C(R3)<、>C(R3)-、-C(R3)(R4)-、-C(R3)2,>C<in any basic structure carry out repeating or combining the hydrocarbon chain of structure made of two or more.There is hydrogen atom in the end of structure Z or selected from by-C (A)3、-C(A)2B、-C(A)(B)2、-C(A)2-C(R3)3、-C(R3)2A、-C(R3)3At least one kind of group in the group of composition.
Above-mentioned R3、R4Separately indicate hydrogen atom, alkyl, alkoxy, aryl, fluoroalkyl, aralkyl or by theyThe alkyl or fluorine atom being composed.A, B separately indicates the substituent group comprising oxygen atom or nitrogen-atoms.In structure ZMultiple R are inside individually present3、R4, A, B situation when, they are same to each other or different.
Y is indicated comprising the atom in hydrogen atom, carbon atom, oxygen atom, nitrogen-atoms, phosphorus atoms, sulphur atom and is hadHydrophilic hydrophilic radical.Y is same to each other or different when being multiple situations.
<14>
The non-woven fabrics according to any one of above-mentioned<1>and<9>to<13>, wherein above-mentioned liquid film cracking agent or above-mentionedCompound C2 include selected from by following formula [V] any one represented by polyoxyalkylene alkyl (POA) ether and following formulaPolyether polyols, stereth, docosyl alcohol polyethers, the PPG Pork and beans of 1000 or more matter average molecular weight represented by [VI]At least one kind of compound in the group of cool base ether, PPG stearyl ether and PPG behenyl base ether composition.
[changing 23]
[changing 24]
In formula, L21Indicate ether, amino, amide groups, ester group, carbonyl, carbonate group, polyoxyethylene, polyoxypropylene,Polyoxy butylidene or the polyoxy alkylidene for being composed them etc. are bonded base.R51Indicate comprising hydrogen atom, methyl, ethyl,Propyl, isopropyl, butyl, amyl, hexyl, heptyl, 2- ethylhexyl, nonyl, decyl, methoxyl group, ethyoxyl, phenyl, fluothaneThe various substituent groups of base, aralkyl or the alkyl for being composed them or fluorine atom.In addition, a, b, m and n are independentlyThe integer that ground is 1 or more.Herein, CmHnIt indicates alkyl (n=2m+1), CaHbIt indicates alkylidene (a=2b).Furthermore these carbon are formerSubnumber and number of hydrogen atoms determine each independently in various [V] and [VI], may not indicate identical integer, can also be different.AgainPerson ,-(CaHbO)m" m " be 1 or more integer.The value of the repetitive unit determines each independently in various [V] and [VI],It may not indicate identical integer, it can also be different.
<15>
The non-woven fabrics according to any one of above-mentioned<1>and<9>to<13>, wherein above-mentioned liquid film cracking agent or above-mentionedCompound C2 include selected from by represented by following formula [VII] fatty acid, represented by following formula [VIII-I] or [VIII-II]Any one or following formula of any one of fatty acid glyceride and pentaerythritol fatty ester, following formula [IX], following formula [X]The partial esterification of fatty acid glyceride, sorbitan carboxylic esters and pentaerythritol fatty ester represented by any one of [XI]Object, the compound of sterol structure with following formula [XII], alcohol, following formula [XIV] represented by following formula [XIII] are representedAliphatic ester and following formula [XV] represented by wax composition group in it is at least one kind of.
[changing 25]
CmHn-COOH [VII]
In formula [VII], m and n are separately 1 or more integer.Herein, CmHnIndicate the alkyl of above-mentioned each fatty acid.
[changing 26]
[changing 27]
In formula [VIII-I] and [VIII-II], m, m ', m ", n, n ' and n " are separately 1 or more integer.It is multipleM, multiple n are respectively same to each other or different.Herein, CmHn、Cm′Hn' and Cm″Hn" respectively indicate the alkyl of above-mentioned each fatty acid.
[changing 28]
In formula [IX], m and n are separately 1 or more integer.Multiple m, multiple n are respectively same to each other or different.ThisPlace, CmHnIndicate the alkyl of above-mentioned each fatty acid.
[changing 29]
In formula [X], R52Indicate that carbon atom number is 2 or more and 22 linear chain or branched chains below, saturated or unsaturated alkyl(alkyl, alkenyl, alkynyl etc.).Specifically, can enumerate: 2- ethylhexyl, lauryl, myristyl, palmityl, stearyl,Behenyl base, oleyl, sub-oleyl etc..
[changing 30]
In formula [XI], m and n are separately 1 or more integer.Multiple m, multiple n are respectively same to each other or different.ThisPlace, CmHnIndicate the alkyl of above-mentioned each fatty acid.
[changing 31]
[changing 32]
CmHn-OH [XIII]
In formula [XIII], m and n are separately 1 or more integer.Herein, CmHnIndicate the alkyl of above-mentioned each alcohol.
[changing 33]
CmHn-COO-CmHn [XIV]
In formula [XIV], m and n are separately 1 or more integer.Herein, 2 CmHnIt is identical or different.CmHn-COO-CmHnIndicate the alkyl of above-mentioned each fatty acid.-COOCmHnCmHnIndicate the alkyl for being originated from the alcohol for forming ester.
[changing 34]
CmHn [XV]
In formula [XV], m and n are separately 1 or more integer.
<16>
The non-woven fabrics according to any one of above-mentioned<1>to<15>, wherein above-mentioned to be arranged as along above-mentioned non-woven fabrics tableThe arrangement of the multiple directions of the intersection in face.
<17>
According to non-woven fabrics described in above-mentioned<16>, wherein the multiple directions of above-mentioned intersection include the first of above-mentioned non-woven fabricsDirection and orthogonal to that second direction.
<18>
The non-woven fabrics according to any one of above-mentioned<1>to<17>, wherein above-mentioned arrangement, which will at least configure, to be becomeIt, should be by the situation for applying above-mentioned non-woven fabrics as paper nappy or the surficial sheets of daily sanitary napkins by the position in liquid portionLiquid portion is the length direction of above-mentioned paper nappy or daily sanitary napkins and the center portion of width direction, using above-mentioned non-woven fabrics asIt should be that the overnight hygienic band is divided into 4 in the longitudinal direction by liquid portion when the situation of the surficial sheets application of overnight hygienic bandThe center portion from length direction and width direction in the several Two Areas in front end when the situation in a region.
<19>
The non-woven fabrics according to any one of above-mentioned<1>to<18>, wherein above-mentioned to be arranged with being spaced from each other containing portionIt is multiple.
<20>
The non-woven fabrics according to any one of above-mentioned<1>to<19>, wherein it is above-mentioned it is non-containing portion in the more of above-mentioned intersectionIt is continuously or discontinuously arranged on a direction.
<21>
The non-woven fabrics according to any one of above-mentioned<1>to<20>, wherein it is above-mentioned be arranged as it is above-mentioned containing portion continuousThe above-mentioned non-arrangement for containing the sea arranged with being spaced from each other in portion-island configuration pattern.
<22>
The non-woven fabrics according to any one of above-mentioned<1>to<21>, wherein arbitrarily marking along crossing above-mentioned nothingWhen the imaginary line of any direction of woven fabric, above-mentioned on the imaginary line is shorter in length than the above-mentioned non-length containing portion containing portion.
<23>
According to absorbent commodity described in above-mentioned<22>, wherein above-mentioned imaginary line reaches in the above-mentioned non-length containing portionIt is marked at longest position.
<24>
According to non-woven fabrics described in above-mentioned<22>or<23>, wherein the above-mentioned length S2 containing portion on above-mentioned imaginary lineIt is 1/19 or more and 1 hereinafter, preferably less than 1 relative to the ratio between above-mentioned non-length S1 containing portion, i.e. S2/S1, more preferably2/3 hereinafter, further preferably 3/7 hereinafter, in addition, it is above-mentioned than preferably 1/9 or more, more preferably 1/4 or more.
<25>
According to non-woven fabrics described in above-mentioned<22>or<23>, wherein the above-mentioned length S2 containing portion on above-mentioned imaginary lineIt is 1/4 or more and 3/7 or less relative to the ratio between above-mentioned non-length S1 containing portion, i.e. S2/S1.
<26>
The non-woven fabrics according to any one of above-mentioned<1>to<25>, wherein above-mentioned total area containing portion is above-mentionedBelow non-total area containing portion.
<27>
The non-woven fabrics according to any one of above-mentioned<1>to<26>, wherein above-mentioned total area containing portion is above-mentionedIt is 5% or more and 50% hereinafter, preferably 40% containing ratio shared in the sum of portion and above-mentioned non-total area containing portionHereinafter, more preferably 30% hereinafter, in addition, aforementioned proportion is preferably 10% or more, more preferably 20% or more.
<28>
The non-woven fabrics according to any one of above-mentioned<1>to<26>, wherein above-mentioned total area containing portion is above-mentionedIt is 20% or more and 30% or less containing ratio shared in the sum of portion and above-mentioned non-total area containing portion.
<29>
The non-woven fabrics according to any one of above-mentioned<1>to<28>, wherein it is above-mentioned that there is circle containing portion, and this containsHave portion alongst and the two directions of width direction be spaced from each other in a plurality of directions dispersed arrangement have it is multiple.
<30>
The non-woven fabrics according to any one of above-mentioned<1>to<28>, wherein it is above-mentioned containing portion and it is non-containing portion in lengthDegree zonally extends on direction, and this band-like non-is configured containing portion and alternately in the direction of the width containing portion.
<31>
The non-woven fabrics according to any one of above-mentioned<1>to<28>, wherein in above-mentioned nonwoven surface, in multiple sidesIt is extended continuously upwards and is formed as clathrate non-containing being spaced from each other in portion to be arranged with multiple classes rhomboid containing portion.
<32>
The non-woven fabrics according to any one of above-mentioned<1>to<28>, wherein in above-mentioned nonwoven surface, in multiple sidesIt is extended continuously upwards and is formed as the rhomboid non-containing portion containing multiple classes are arranged in portion with being spaced from each other of clathrate.
<33>
The non-woven fabrics according to any one of above-mentioned<1>to<32>, wherein the contact of the above-mentioned composition fiber containing portionAngle is greater than the contact angle of the above-mentioned non-composition fiber containing portion.
<34>
According to non-woven fabrics described in above-mentioned<33>, wherein the contact angle of the above-mentioned composition fiber containing portion non-contains with above-mentionedThe difference for having the contact angle of the composition fiber in portion is 5 degree or more and 90 degree hereinafter, preferably 10 degree or more, more preferably 20 degree withOn, additionally, it is preferred that for 60 degree hereinafter, more preferably 40 degree or less.
<35>
According to non-woven fabrics described in above-mentioned<33>, wherein the contact angle of the above-mentioned composition fiber containing portion non-contains with above-mentionedThe difference for having the contact angle of the composition fiber in portion is 20 degree or more and 40 degree or less.
<36>
The non-woven fabrics according to any one of above-mentioned<33>to<35>, wherein the above-mentioned non-composition fiber containing portionContact angle be preferably 90 degree hereinafter, more preferably 80 degree hereinafter, further preferably 70 degree or less.
<37>
The non-woven fabrics according to any one of above-mentioned<33>to<36>, wherein the above-mentioned composition fiber containing portion connectsFeeler be preferably 110 degree hereinafter, more preferably 90 degree hereinafter, further preferably 80 degree or less.
<38>
The non-woven fabrics according to any one of above-mentioned<1>to<37>, wherein above-mentioned liquid film cracking agent, above compoundThe viscosity of C1 or above compound C2 be 0cps or more, and preferably 10000cps hereinafter, more preferably 1000cps hereinafter, intoOne step is preferably 200cps or less.
<39>
The non-woven fabrics according to any one of above-mentioned<1>to<38>, wherein above-mentioned liquid film cracking agent, above compoundThe water solubility of C1 or above compound C2 are 0g or more and 0.025g or less.
<40>
The non-woven fabrics according to any one of above-mentioned<1>to<39>, wherein above-mentioned liquid film cracking agent, above compoundThe surface tension of C1 or above compound C2 are preferably 32mN/m hereinafter, more preferably 30mN/m is hereinafter, further preferably25mN/m hereinafter, especially preferably 22mN/m hereinafter, and preferably 1mN/m or more.
<41>
The non-woven fabrics according to any one of above-mentioned<1>to<40>, wherein above-mentioned liquid film cracking agent, above compoundC1 or above compound C2 weighting is present at least part of fiber interweaving point nearby or near fibre fusion point.
<42>
The non-woven fabrics according to any one of above-mentioned<1>to<41>, wherein above-mentioned non-woven fabrics is with protrusion and recess portionConcaveconvex shape.
<43>
According to non-woven fabrics described in above-mentioned<42>, wherein contain portion with above-mentioned in the top of raised part.
<44>
According to non-woven fabrics described in above-mentioned<42>or<43>, wherein the bottom of above-mentioned recess portion, which has, above-mentioned non-contains portion.
<45>
According to non-woven fabrics described in above-mentioned<42>, wherein raised part with it is above-mentioned consistent containing portion, above-mentioned recess portion with it is above-mentionedIt is non-consistent containing portion.
<46>
A kind of absorbent commodity uses non-woven fabrics described in any one of above-mentioned<1>to<45>as surficial sheets.
<47>
According to absorbent commodity described in above-mentioned<46>, wherein above-mentioned absorbent commodity is sanitary napkin.
<48>
According to absorbent commodity described in above-mentioned<46>or<47>, wherein arbitrarily marking along above-mentioned absorbability objectWhen the imaginary line of the width direction of product, being shorter in length than for the above-mentioned width direction containing portion on the imaginary line is above-mentioned non-containing portionWidth direction length.
<49>
According to absorbent commodity described in above-mentioned<48>, wherein above-mentioned imaginary line reaches in the above-mentioned non-length containing portionIt is marked at longest position.