CN202198749U - Absorbent pad having asymmetric absorption amount and absorbent article including the same - Google Patents

Abstract

An absorbent pad having a chassis comprising a liquid-permeable topsheet and a liquid-impermeable backsheet, both the topsheet and the backsheet being geometrically symmetric about the transverse and longitudinal centerlines of the absorbent pad so that the absorbent pad can be attached to a wearer with either longitudinal end in a forward/rearward direction, characterized in that the absorbent pad further comprises an absorbent core positioned between the topsheet and the backsheet, said absorbent core also being geometrically symmetric about the longitudinal centerline and the transverse centerline of the absorbent pad, whereby said absorbent core is divided in the longitudinal direction into a first longitudinal half and a second longitudinal half, said absorbent core prior to absorption of moisture having the same thickness at the same distance from a line of weakness in the transverse direction, said distance being measured perpendicular to the transverse centerline. Wherein the first longitudinal half exhibits a higher absorption capacity than the second longitudinal half, and an absorbent article comprising said absorbent pad, wherein the absorbent pad is detachably connected to a separate waist belt.

Description

Have the absorption pad of asymmetric absorbtivity and comprise the absorbent commodity of this absorption pad

Technical field

The absorbent commodity that this utility model relates to a kind of absorption pad and comprises this absorption pad relates in particular to a kind of absorbent commodity that comprises the symmetrical absorption pad with asymmetric absorbtivity, and this absorption pad can removably be connected to independent belt.

Background technology

Known have various absorbent commodities such as diaper, urine trousers, sanitary towel, incontinence protection etc. to be widely used in various incontinence adults and child, is used for absorbing bodily ejection such as blood, urine, antiperspirant, feces etc.Some absorbent commodities have belt, and during use, belt is placed to make things convenient for wearing off of this absorbent commodity around waist.Especially, belt is designed to independent belt, and it removably links to each other with absorption pad, and is for example disclosed in WO99/21522, WO94/26224, WO94/26222, WO/94/26225, US 4964860.

With various absorption pads that above-mentioned belt links to each other in; No use occasion and different user have different requirement to the absorbtivity of absorbent commodity; Even same user possibly expect that also the each several part of same absorbent commodity has the differing absorption amount.The various absorbent commodities that have different absorbtivitys at different parts have been developed.

US5156902 discloses a kind of absorbent commodity; Wherein the SAM of larger proportion is that the super absorbent polymer material is concentrated towards at least one end of absorber; Its special SAM that limits the 50-59% percentage by weight is arranged in the first half of absorbent cores; This absorbent commodity has directivity, can not put upside down before and after it to wear.

US4673402 discloses a kind of stratified absorbent commodity; Wherein, Absorbent cores comprises two-layer, the upper flow that promptly contains maximum 8% percentage by weight hydrogel material obtains/and distribution layer and contain the lower flow accumulation layer of 9-60% percentage by weight hydrogel material.The lower floor of containing 75% percentage by weight hydrogel material is placed in preceding 2/3 section of absorbent commodity, makes that this whole core becomes asymmetric core on thickness, has limited the direction that wears of article thus.

US4381782 discloses a kind of absorbent fibrous structure; Diaper for example; Absorbent cores wherein is an all symmetric product on the vertical and horizontal before folding in general; Through cutting and being folded into shape and all asymmetric core of thickness, wherein thickness is bigger in vertical half one, thereby makes in bigger its absorbability of place of thickness stronger then.

This shows, though the article in the above-mentioned patent can both be implemented in article vertically on have the differing absorption amount, that is, have bigger absorbtivity towards a certain end of article.But obviously, it has restriction to wearing direction, that is, they all can only use in one direction.

SE9702159 discloses a kind of symmetrical absorbent commodity, and its two and half one has the differing absorption amount, but article have asymmetrical absorbent cores; Wideer at core one end; In description, be described to, because gradually thin profile, the two ends of article have the differing absorption ability.Also mention, as far as the women of intermenstrual period, need have bigger absorbtivity evening and daytime, forwardly absorbtivity was bigger, so article can both use under two kinds of situation at the article rear portion.But this asymmetrical absorbent cores makes that the dress of article is very uncomfortable.

US5135522 discloses a kind of absorbent commodity with belt that comprises the multilamellar absorbing structure, and it has mentioned that the man tends to urinate more forward and woman's this fact of urine in the middle of crotch portion, mentions that also the placement of lower floor is corresponding with the target area.

US5135522 is the immediate prior art of this utility model, and wherein article can be oriented such that its arbitrary end/backwards forward in wearer, and in its two and half one, have different absorbtivitys.But, obviously, have high absorbtivity in one and half ones and realize owing in this half one, having increased another absorbent cores 74.In the description of US5135522, also mentioned " using and arranging the absorbtivity demand that can satisfy specific user of discrete absorbent cotton 74 comprises the discrete absorbtivity that can more effectively utilizediaper 10first half SMIS 18 of being provided with of taking off finger cotton 74 of hydrogel ".

A problem of this absorbent cores in uneven thickness is that thicker half one of core reduces the comfort level of article, particularly when being oriented such that one of end is positioned at certain direction, for example its thicker half one towards the rear to the time.

Another problem is, article when being oriented such that one of end is in certain direction such as its thicker half one towards the rear to the time, article are too eye-catching.

End up till now, have no openly a kind of like this absorbent commodity of document, its matrix and absorbent cores both are " symmetries "; And the thickness of core is before identical at the thickness on the cross central line same distance by moisture absorption; Said distance records perpendicular to cross central line, still, has different absorbtivitys in two vertical half ones; Thereby, can both link to each other with the wearer forward or under the situation backwards in half one of high absorbtivity according to the concrete needs of user.

The utility model content

In view of the above problems, the purpose of this utility model is to provide a kind of geometry symmetric absorbent commodity, thereby the direction that wears of article is not limited, but absorbability has difference to satisfy different instructions for uses on different parts.That is to say, from the geometry viewpoint, these article should be on horizontal and vertical symmetries all; And it is also identical before the said absorbent cores moisture absorption at the thickness on the cross central line same distance; Said distance records perpendicular to cross central line, and still, vertical half one has the higher absorption amount at one of which; According to the concrete needs of user, in its two and half one any forward/upwards can both for example be connected to user towards the rear through independent belt.

For realizing above-mentioned purpose; This utility model provides a kind of absorption pad on the one hand; Have matrix, said matrix comprises liquid-permeable topsheet and the impermeable egative film of liquid, and top flat and egative film are all symmetrical about cross central line and longitudinal center's line geometry of absorption pad; This absorption pad has and can absorption pad be connected to the connecting device on the belt that waist is provided with releasedly; It is characterized in that the absorbent cores that comprises between top flat and egative film is paid somebody's debt and expected repayment later in this absorption, said absorbent cores is symmetrical about the longitudinal centre line and the transverse center line geometry of absorption pad equally; Said absorbent cores is divided into first vertical half one and second vertical half one in the vertical; Wherein said absorbent cores is identical at the thickness on the cross central line same distance before moisture absorption, and this distance records perpendicular to cross central line, and wherein said first vertical half one has higher absorbtivity than second vertical half one.

In a preferred embodiment, the ratio of first vertical half one of this absorbent cores and the absorbtivity of second vertical half one is 80: 20, is preferably 60: 40, more preferably 55: 45.

In according to the absorption pad in this utility model, said absorbent cores comprises that superabsorbent material also is SAP.Preferably, contain in first of absorbent cores vertical half one and second vertical half one and cause two vertical half ones to have the not commensurability SAP of different absorbtivitys.

Preferably, this absorbent cores differs in the size of on cross central line same vertical distance, being surveyed and is 5% to the maximum.

Preferably, with belt deviate from said connecting device that wearer's one side links to each other be located at absorption pad in the face of on wearer's one side.

Particularly, said connecting device comprise each corner that is located at the absorption pad longitudinal end and be intended to be located at belt on the hook element that links to each other of loop member.Perhaps, said connecting device comprises the loop member that each corner of being located at the absorption pad longitudinal end and purport link to each other with hook element on being located at belt.Alternatively, the hook element can with by ring material for example the belt self that constitutes of non-woven fabrics link to each other.

Alternatively, said connecting device comprise each corner that is located at the absorption pad longitudinal end and be intended to be located at belt on the viscosity part that links to each other of adhering zone.

In an optional embodiment, said connecting device is located at from outward extending each contact pin of each waist of absorption pad.

In order to let user can know clearly that the absorbtivity of which half one in two and half ones of absorbent cores is stronger; Vertical half one with higher absorption amount of absorption pad is provided with indicating device and points out to user, thereby makes things convenient for user to use absorption pad as required.

Alternatively, vertical half one with low absorbtivity of said absorption pad is provided with indicating device.

Preferably, said indicating device comprises visual indicating device or sense of touch indicating device, to be suitable for various people, and blind person etc. for example.

This utility model a kind of absorbent commodity also is provided on the other hand, it comprises above-mentioned absorption pad and independent belt, said absorption pad can be connected on the said belt releasedly.

Through aforesaid this utility model absorbent commodity; Because absorption pad and absorbent cores horizontal with vertically on all symmetry and particularly absorbent cores are before also identical at the thickness on the cross central line same distance in moisture absorption; This distance records perpendicular to cross central line, makes under arbitrary half of absorption pad state/backwards, to be connected to wearer through belt forward according to the needs of user.When arbitrary end was provided with forward or backwards, article were not in use because two vertical half ones have obvious appearance difference and let user feel as snug as a bug in a rug.

Description of drawings

Be elaborated with the mode of indefiniteness preferred embodiment according to accompanying drawing below, wherein to this utility model.

Fig. 1 is the plane graph of this utility model absorbent commodity, and it has according to the absorption pad of an embodiment of this utility model and the independent belt that is attached thereto.

Fig. 2 A is the plane graph of this utility model absorption pad shown in Figure 1.

The absorption pad of Fig. 2 B for being intended to according to another embodiment of this utility model link to each other with independent belt.

The axonometric chart of the independent belt that Fig. 3 will be attached thereto for this utility model absorption pad.

The specific embodiment

Describe this utility model with reference to the accompanying drawings in detail, this utility model absorbent commodity 1 shown in Fig. 1 comprisesabsorption pad 2 and independent belt 3.Thisbelt 3 is a successive whole girdle, and when article during through wearer, belt 3 removably links to each other with 5 at two longitudinal ends of cardinal principle mid portion and absorption pad 24.

As shown in Figure 3, at an end ofbelt 3, have theflexible strip 6 that constitutes by the hook element in the hook-loop class securing member, it can be fixed on the outer surface 8 ofbelt 3 or be fixed on the ring material that is arranged on the outer surface 8.Belt 3 is an elongate rectangular shape, comprises two edges that are spaced laterally apart 9 and 10, andbar 6 is connected to therebetween, and certainly, other shapes ofbelt 3 also can be expected.

The preferred nonwoven cloth material that uses comes the one or both sides asbelt 3, and said non-woven material can be the material type that can be connected releasedly with the hook element ofbar 6.

Fig. 2 A shows theabsorption pad 2 of this utility model absorbent commodity 1, in pad each corner of 2, is provided with abar 6 ' or 6 ", four bars shown in Fig. 2 A, wherein two bars 6 ' are positioned atend 4, in addition twobars 6 " be positioned at end 5.These are 6 ', 6 years old " be used for being connected to releasedly arbitrary surperficial 8 or 18 of belt 3.Preferably, these are 6 ', 6 years old " by withbelt 3 onbar 6 identical materials process hook element for example.

Fig. 2 B illustrates another optional embodiment of absorption pad 2.Each waist ofabsorption pad 2 all has twocontact pin 13, contact pin from the edge side of waist to stretching out, for a waist,contact pin 13 of every side.Be provided withbar 6 ' or 6 facing on wearer's one side of each contact pin ".These are 6 ', 6 years old " by withbelt 3 onbar 6 identical materials process hook element for example.These are 6 ', 6 years old " be used for being connected to releasedly the outer surface 8 of belt 3.Bar 6 ' or 6 alternatively " be arranged on the opposition side ofcontact pin 13, in this case, bar 6 '; 6 " be used for being connected to releasedly belt towards wearer's oneside 18.

Shown in Fig. 2 A and 2B were clear,absorption pad 2 was how much symmetrical structures, and it is all symmetrical about axis Y-Y of longitudinal center and central transverse axis X-X, is divided into two vertical half ones thereby will fill up 2, i.e. first vertical half one and second vertical half one.

Absorption pad among Fig. 2 A and the 2B comprises matrix, and it has liquid-permeable topsheet, the impermeable egative film of liquid and therebetweenabsorbent cores 14.

The layer that contacts with wearer's body when the top flat of absorption pad is to use.Therefore, it for skin should be soft, do not stimulate and comfortable, and body fluid should unhinderedly pass it.Top flat can by for example spunbond, that melt and spray, combing, the water acupuncture manipulation is entwined, wet-laying etc. non-woven material constitute.Suitable non-woven material comprises natural fiber such as wood pulp or cotton fiber, the mixture of staple fibre such as polyester, polyethylene, polypropylene, viscose etc. or natural and staple fibre.Top flat also can comprise the bunch fiber to combine pattern to be bonded to each other.Other example that is suitable for the material of top flat is porous foam, apertured plastic film etc.

The egative film of absorption pad is apart from wearer's body layer farthest when pad uses.Avoid polluting for the clothes of protection wearer, it should be that liquid is impervious, but preferred ventilative (i.e. ventilation) can reduce the warm moist situation that occurs in the absorption pad like this to allow air and steam to get into and to leave absorption pad.Usually, egative film is liquid material impermeable such as plastic sheeting such as polyethylene or polypropylene screen, is coated with the non-woven material of liquid material impermeable, the hydrophobic nonwoven material that barrier liquid passes, or comprise the laminate of plastic foil and non-woven material.The breathable backsheet material be exemplified as apertured polymeric film, the non-woven laminate article of spunbond and meltblown layer, the laminate of apertured polymeric film and non-woven fabrics.。

Theabsorbent cores 14 of absorption pad is used for reception and receiving fluids and other body fluid.Therefore, it typically comprises absorbent material.The example of ubiquitous absorbent material is cellulose fluff pulp, cotton paper layer, superabsorbent polymer (so-called ultra absorber SAP), absorbent foam, absorbent non-woven material etc.It is very general that cellulose fluff pulp and ultra absorber are combined in the absorber.

Absorbent cores 14 can comprise and is designed to improve one or more layers that bodily waste handles.

Top flat and egative film have similar expanded range usually in the plane of absorption pad, andabsorbent cores 14 has smaller expanded range.Top flat and egative film are connected to each other around the periphery of absorbent cores, andabsorbent cores 14 is closed in the strip of paper used for sealing of top flat and egative film formation like this.Absorbent cores 14 is centrally arranged in absorption pad 2.Top flat and egative film can be through the known any way of prior art such as ultrasonic bonding, thermal weld or gluing being engaged with each other.

Definition:

" absorption pad " in this utility model or the meaning of " pad " are merely illustrative, and it is actual to be used in following article: diaper, urine trousers, incontinence protection etc. are used for absorbing bodily ejection such as blood, urine, antiperspirant, feces etc.

In the embodiment of this utility model; Shown in Fig. 2 A and 2B;Absorbent cores 14 longitudinal centre line Y-Y and the cross central line X-X about pad too is symmetrical, therebyabsorbent cores 14 also is divided into two vertical half ones, i.e. first vertical half one 11 and second vertical half one 12.Importantly, absorbent cores is identical at the thickness on the cross central line same distance before by the body fluid moisture absorption, and said distance records perpendicular to cross central line, that is to say, two vertical half ones have identical thickness.After the article moisture absorption, make two vertical half ones possibly have different thickness owing to having absorbed liquid.

Preferably; In two vertical half ones of absorbent cores; The amount of the superabsorbent polymers SAP that is comprised is different, thereby makes and in two and half ones, have the differing absorption amount respectively, particularly; SAP that first vertical half one comprises amount is greater than second vertical half one, thereby the absorbtivity that makes first vertical half one is greater than second vertical half one.

Preferably, the contained SAP amount of first vertical half one 11 ofabsorbent cores 14 and second vertical half one 12 is set as and makes the ratio of the absorbtivity between the first half ones and the second half ones is 80: 20, is preferably 60: 40, more preferably 55: 45.

Aboutabsorbent cores 14; Term among this paper " how much symmetries " refers to not only, and absorbent cores has symmetric profile in X-Y plane; And absorbent cores is before moisture absorption, and also identical at the thickness on cross central line X-X same distance, said distance records perpendicular to cross central line X-X; After the absorbent cores moisture absorption, vertical half one with higher absorption amount is thicker than another vertical half one of absorbent cores because of having absorbed more fluid.

The absorbent cores of " how much symmetries " also possibly change owing to tolerance in manufacture process slightly in X-Y plane, particularly when compressed absorbent core (being rolled into volume).According to this utility model, in X-Y plane, record, be 5% at the maximum difference of the size that on cross central line X-X same vertical distance, records, also in the scope of this utility model, measurement point is positioned at along two and half ones of X-X line mirror image for this.

Because absorption pad is a symmetrical structure in fact, it can be through wearer forward or under the state backwards at arbitrary end, and links to each other with belt.Orientation when article are used is restriction not.This just provides convenience and comfortableness for the wearer.

Adopt this symmetrical article that have different absorbtivitys in two and half ones, article can be used in different occasions, and man/woman for example lies on the back or prostrate, or the like, only need as required half one with the higher absorption ability to be in forward or direction backwards just.This has greatly improved the motility when using.

Because the symmetrical structure in fact of absorption pad and absorbent cores, user are difficult to just can distinguish first half and latter half of through observing simply sometimes, be difficult to distinguish half one of high absorbtivity and half one of low absorbtivity in other words.For this reason, in half one of the higher absorption amount of article, have indicating device, alternatively, also can in half one of low absorbtivity on the article, indicating device be set, though not preferred to express half one which half one is the higher absorption amount to user.

Preferably, indicating device can comprise vision indication or sense of touch indication, and perhaps two kinds of indications have, and the vision indication can be literal, figure, trade mark etc., and this is except indicative function, and also can be article increases joyful outward appearance.Sense of touch indication can be the protrusion that is provided with of the outer surface from absorption pad or recessed object, and this is for example very useful and convenient for the blind person for the people that can not differentiate high absorbtivity half one and low absorbtivity half one easily.

Though being connected between connection and belt that this utility model illustrates the belt two ends and the absorption pad is that the hook-loop class connects, this utility model is not restricted to this, also can use the connection of other modes, for example viscosity bar and adhering zone, buckle connection etc.

Although this utility model is described with regard to preferred embodiment; But this is not the restriction that means this utility model, should be understood that, the protection domain of this utility model is limited appended claim; Under the prerequisite that does not break away from this scope, those skilled in the art can carry out various modifications.

Claims (15)

1. absorption pad; Have matrix, said matrix comprises liquid-permeable topsheet and the impermeable egative film of liquid, and top flat and egative film are all symmetrical about cross central line and longitudinal center's line geometry of absorption pad; This absorption pad has and can absorption pad be connected to the connecting device on the independent belt that waist is provided with releasedly; It is characterized in that the absorbent cores that comprises between top flat and egative film is paid somebody's debt and expected repayment later in this absorption, said absorbent cores is symmetrical about the longitudinal centre line and the transverse center line geometry of absorption pad equally; Said absorbent cores is divided into first vertical half one and second vertical half one in the vertical; Wherein said absorbent cores is identical at the thickness on the cross central line same distance before moisture absorption, and said distance records perpendicular to cross central line, and wherein said first vertical half one has higher absorbtivity than second vertical half one.

2. absorption pad as claimed in claim 1 is characterized in that, the ratio of first vertical half one of this absorbent cores and the absorbtivity of second vertical half one is 80: 20.

3. absorption pad as claimed in claim 1 is characterized in that, the ratio of first vertical half one of this absorbent cores and the absorbtivity of second vertical half one is 60: 40.

4. absorption pad as claimed in claim 1 is characterized in that, the ratio of first vertical half one of this absorbent cores and the absorbtivity of second vertical half one is 55: 45.

5. absorption pad as claimed in claim 1 is characterized in that said absorbent cores comprises superabsorbent material.

6. absorption pad as claimed in claim 5 is characterized in that, contains in first vertical half one of said absorbent cores and second vertical half one and causes said two not commensurability superabsorbent materials that vertical half one has different absorbtivitys.

7. absorption pad as claimed in claim 1 is characterized in that, differs in the size of the absorbent cores that on cross central line same vertical distance, records to be 5% to the maximum.

8. absorption pad as claimed in claim 1 is characterized in that, with belt deviate from said connecting device that wearer's one side links to each other be located at absorption pad on wearer's one side.

9. absorption pad as claimed in claim 1; It is characterized in that; Said connecting device comprise each corner that is located at the absorption pad longitudinal end and be intended to be located at belt on the hook element that links to each other of loop member, perhaps said connecting device comprise each corner that is located at the absorption pad longitudinal end and be intended to be located at belt on the loop member that links to each other of hook element.

10. absorption pad as claimed in claim 1 is characterized in that, said connecting device comprise be positioned at each corner that is located at the absorption pad longitudinal end be intended to be located at belt on the viscosity part that links to each other of adhering zone.

11. absorption pad as claimed in claim 1 is characterized in that, said connecting device is located at from outward extending each contact pin of each waist of absorption pad.

12. absorption pad as claimed in claim 1 is characterized in that, vertical half one with higher absorption amount of said absorption pad is provided with indicating device.

13. absorption pad as claimed in claim 1 is characterized in that, vertical half one with low absorbtivity of said absorption pad is provided with indicating device.

14., it is characterized in that said indicating device comprises visual indicating device or sense of touch indicating device like claim 12 or 13 described absorption pads.

15. an absorbent commodity, it comprises that said absorption pad is connected on the said belt releasedly like each described absorption pad and independent belt in the aforementioned claim.

Images