Disposable wearing article, manufacture device and manufacture methodTechnical field
The present invention relates to a kind of disposable wearing article, the manufacture device of described disposable wearing article and manufacture method,In described disposable wearing article, one or more elongated elastomers are arranged on the single sheet material with flexibility(sheet) one side side or between there is a pair sheet material of flexibility.Specifically, such as, at disposable diaper, physiology with defendingIn the disposable wearing article (these are also body fluids absorbent article) of raw towel etc., the present invention is best suited for waistline wrinkle pleat (that is, shapeBecome the fold of waist portion, pleat or folding line) forming part, it addition, the present invention is applicable to such disposable wearing articleManufacture.
Background technology
Such as in disposable diaper (either pants type, banding pattern), (each sheet material is by single or multiple lift structure for multiple sheet materialsBecome) cover the absorber containing superabsorbent polymer granule.Generally, (there is also itself packaged sheet material than absorberSituation about covering) closer to the side of health, the top-sheet (also referred to as surficial sheets, upper layer of sheet material) etc. of liquid permeability is set,And in the side contrary with health, liquid-impermeable back sheet material (also referred to as inner face sheet material, outer layer sheet) etc. is set.It addition,In the waist of backsheet, leg, waist portion etc., configuration the elastomer (such as, thread rubber) of elongate, these are elasticBody is relevant with the formation of waist wrinkle pleat (gather), leg wrinkle pleat, waistline wrinkle pleat etc. when elastic return (that is, shrinking), andThere is the function making disposable diaper and body fit when dressing.Additionally, due to the outside of back sheet material (that is, with healthThe face of opposite side) it is positioned at the outermost of disposable diaper, therefore there is the situation possessing marking part, described marking part is for straightConnect printing marking class (house mark, brand mark, font mark etc.), product data (title, specification, manufacturer, saleBusiness etc.), explanation hurdle (using method, points for attention etc.) etc., or for adhesive label.
In such disposable diaper, when waistline wrinkle pleat is formed at the whole of waist portion because of the contraction of waistline elastomerDuring body (all-round), improve the wearing of health (that is, waistline).But, the contractility (that is, elastic restoring force) of waistline elastomerAlso affecting absorber and marking part via backsheet, absorbability reduces because of the deformation of absorber or movement, or identification because ofThe bending of marking part and be deteriorated.
Then, such as in patent documentation 1, will be to extended state part and unstretched condition part (with absorber and markShow that the allocation position in portion is corresponding) entirety of the elastomer that carried out tension adjustment is bonding with back sheet material, and thus, setting will notForm the region of wrinkle pleat, thus prevent the absorbability of absorber and the identification of marking part from reducing.But, in patent documentation 1,Owing to adhesive applicating is in sheet material side, back, therefore there is following trend: have to be coated with the width more than elastomer,And thus increase the coating amount (that is, usage amount) of bonding agent.It is additionally, since and is also coated to be formed with the pleat that wrinkles unrelated non-stretching shapePolymorphic segment (back sheet material corresponding thereto), therefore, increasingly increases the coating amount of bonding agent.
On the other hand, such as in patent documentation 2,3, bonding agent is coated in intermittently sheet material side, back, and bonding wholeBody is in the elastomer of extended state, cuts off the non-bonded part of the elastomer fitted afterwards, thus, it is ensured that the absorption of absorberProperty and marking part identification while, reduce bonding agent coating amount.But, in patent documentation 2,3 (because of certain reason,In the fabrication process), in the case of the non-bonded part of elastomer produces cut-out error, because of the contraction (elastic return) of elastomerBack sheet material be integrally formed waistline wrinkle pleat, thus this disposable diaper is by as defective products.It addition, at patent documentation 2,3In, even if in the case of bonding agent is coated in intermittently elastic side, being also identical.
Prior art literature
Patent documentation
Patent documentation 1: No. 2602408 publications of Japanese Patent No.
Patent documentation 2: No. 2761166 publications of Japanese Patent No.
Patent documentation 3: No. 4243008 publications of Japanese Patent No.
Summary of the invention
It is an object of the invention to provide a kind of coating amount (usage amount) reducing bonding agent and defective products can be suppressedThe disposable wearing article occurred.It addition, another object of the present invention is to, it is provided that a kind of for manufacturing institute simple and cheaplyState manufacture device and the manufacture method of disposable wearing article.
In order to solve above-mentioned problem, according to the disposable wearing article of the present invention, it is characterised in that described disposable wearingArticles for use possess one or more elongated elastomer, and this elastomer is positioned at one side side or the tool of the single sheet material with flexibilityHave between a pair sheet material of flexibility (in the case of elastomer is multiple, such as with also column-shaped), and with extended state respectivelyIt is pasted and fixed on predecessor position and the rear body section position of described sheet material, thus, when described elastomeric resilient recovers (that is, shrinking),Described sheet material forms waistline wrinkle pleat (that is, being formed at the fold of waist portion, pleat or folding line),
For described elastomer, tension force is in stretch-draw region and the not imparting of extended state to make imparting specifyPower and be in the free space of relaxed state and have, corresponding with abdominal circumference with the waist portion of rear body section position at described predecessor positionLong dimensional directions on, described free space is located at the form between described stretch-draw region, wherein, is only in extended stateDescribed stretch-draw region be adhesive applicating region and be in the state being pasted onto described sheet material, described free space is to describedMaterial is in relaxed state and non-adhesive state, is in centre position and is divided into the state of two cutting plates, in described free spaceEach cutting plate and be adjacent, be in extended state and the described stretch-draw region of adhering state links integratedly；
Described waistline wrinkle pleat is at the long dimensional directions both ends of described waist portion, and the elasticity only by described elastomer is extensiveBeing formed at described sheet material again, the elastic return of described elastomer is based on the tension force being applied to each described stretch-draw region.
In this disposable wearing article, owing to not being at sheet material but at elastomer adhesive-applying, and only existThe stretch-draw region adhesive-applying of extended state, and bonding agent is not coated on the free space of relaxed state, therefore, it is possible to subtractThe coating amount (usage amount) of few bonding agent.Further, since the free space of elastomer is in relaxed state and non-adhesive state, andSegmentation free space (specifically, cut off or melted cut-out), therefore, in the sheet portion corresponding with this free space, nothingOpinion is all formed without waistline wrinkle pleat before and after dressing, and thus suppresses the generation of defective products, thus improves the qualification rate of product.AndAnd, such as, though waistline (abdominal circumference) close to the higher limit in the size scope of application of disposable diaper etc. people dress feelingsUnder condition, also will not fasten waist portion with the elastomer of free space, therefore improve wearing feeling.On the other hand, even if manufacturingDuring because of manufacture on deviation and make some tension force produces (residual) in the case of free space, split free space andTension force (that is, pack, wrap up, when displaying etc.) before wearing is made to be formed as 0, it is to avoid in the portion corresponding with absorber and marking partDivide the situation forming waistline wrinkle pleat, thus, do not reduce the absorbability of absorber and the identification of marking part.Furtherly, system is worked asWhen making disposable wearing article, by simplifying the technique (and equipment) of the free space for splitting elastomer, thus also can enterOne step provides disposable wearing article cheaply.
It addition, " segmentation of free space ", refer to be cut off by least one in pressing mechanism and heating arrangements orThe melted free space cutting off elastomer.
Described " disposable wearing article " includes the body fluids absorbent article of disposable diaper, sanitary napkin etc., alsoCould be for the human body article of infant, People, disabled etc., for the house pet article of Canis familiaris L., cat etc..
It addition, " elongated elastomer ", the e.g. rounded shape in cross section, elliptical shape, polygon-shaped, there is thread, ropeShape, banding, the rubber of the shape such as netted or synthetic rubber (elastomer).As " there is the sheet material of flexibility ", it is possible to useSynthetic rubber fibre is the non-weaving cloth of main body, plastic sheet etc., and each sheet material is made up of single or multiple lift." bonding agent " also may be usedUse any one of hot melt class and non-hot melt apoplexy due to endogenous wind.
It addition, in order to solve described problem, be following one according to the manufacture device of the disposable wearing article of the present inventionThe manufacture device of disposable wearing article, in described disposable wearing article, one or more elongated elastomers are arranged in(it is multiple situations at elastomer between the one side side with the single sheet material of flexibility or a pair sheet material with flexibilityUnder, such as with and column-shaped configuration), and be respectively adhered on the predecessor position of described sheet material with extended state and go forward side by side in rear body section positionRow is fixing, and thus, when described elastomeric resilient recovers (that is, shrinking), described sheet material forms waistline wrinkle pleat and (that is, is formed at waistEnclose the fold in portion, pleat or folding line), the manufacture device of described disposable wearing article includes:
Tension adjustment portion, it for giving tension force (in the case of elastomer is multiple, individually or one to described elastomerAnd (simultaneously) gives), and be used for adjusting this tension force；
Adhesive applicating portion, it is for (being many at elastomer by adhesive applicating at the described elastomer of modulated whole tension forceIn the case of individual, individually or in the lump apply) (simultaneously)；
Interflow trucking department, it is for modulated whole tension force and the described elastomer that applied described bonding agent, and interflow is describedSheet material (in the case of sheet material is a pair (simultaneously), individually or in the lump collaborate) is also carried；
Control portion, it is for making the dynamic of described tension adjustment portion, described adhesive applicating portion and described interflow trucking departmentMake connect and be controlled；
Described interflow trucking department includes having been configured with the described sheet material of described elastomer for clamping and carrying out rotating carryingA pair compression roller, described compression roller has the protuberance prominent towards radial outside from periphery；
Described control portion is corresponding with abdominal circumference with the waist portion of rear body section position at described predecessor position to described elastomerIn long dimensional directions, implement the first control mode and the second control respectively with free space form between described stretch-draw regionMode processed；
In described first control mode, formed and give regulation tension force by described tension adjustment portion and maintain stretching shapeThe stretch-draw region of state, and by described adhesive applicating portion by described adhesive applicating in described stretch-draw region, Er QieyouDescribed interflow trucking department by and make the described stretch-draw region of extended state be formed as and the adhering state of described sheet material；
In described second control mode, formed and do not give tension force by described tension adjustment portion and be in relaxed stateThe free space of (i.e., substantially tension force is the state of 0), and described adhesive applicating do not exists by described adhesive applicating portionDescribed free space, and by described interflow trucking department by and make the described free space of relaxed state be formed as with describedThe non-adhesive state of sheet material；
Afterwards, described elastomer is implemented the 3rd control mode, in described 3rd control mode, by described protuberance onlyBy in described second control mode, be in relaxed state and the described free space of non-adhesive state is divided in centre positionTwo.
Or, in order to solve described problem, it is following one according to the manufacture method of the disposable wearing article of the present inventionThe manufacture method of disposable wearing article, in described disposable wearing article, one or more elongated elastomers are arranged in(it is multiple situations at elastomer between the one side side with the single sheet material of flexibility or a pair sheet material with flexibilityUnder, such as with and column-shaped configuration), and be respectively adhered on the predecessor position of described sheet material with extended state and go forward side by side in rear body section positionRow is fixing, and thus, when described elastomeric resilient recovers (that is, shrinking), described sheet material forms waistline wrinkle pleat and (that is, is formed at waistEnclose the fold in portion, pleat or folding line), including:
Tension adjustment portion, it for giving tension force (in the case of elastomer is multiple, individually or one to described elastomerAnd (simultaneously) gives), and be used for adjusting this tension force；
Adhesive applicating portion, it is for (being many at elastomer by adhesive applicating at the described elastomer of modulated whole tension forceIn the case of individual, individually or in the lump apply) (simultaneously)；
Interflow trucking department, it is for modulated whole tension force and the described elastomer that applied described bonding agent, and interflow is describedSheet material (in the case of sheet material is a pair (simultaneously), individually or in the lump collaborate) is also carried；
Control portion, it is for making the dynamic of described tension adjustment portion, described adhesive applicating portion and described interflow trucking departmentMake connect and be controlled；
Described interflow trucking department includes having been configured with the described sheet material of described elastomer for clamping and carrying out rotating carryingA pair compression roller, described compression roller has the protuberance prominent towards radial outside from periphery；
Described control portion is corresponding with abdominal circumference with the waist portion of rear body section position at described predecessor position to described elastomerIn long dimensional directions, carry out the first technique and the second technique respectively with free space form between described stretch-draw region,
In described first technique, formed and give regulation tension force by described tension adjustment portion and maintain extended stateStretch-draw region, and by described adhesive applicating portion by described adhesive applicating in described stretch-draw region, and by describedInterflow trucking department by and make the described stretch-draw region of extended state be formed as and the adhering state of described sheet material；
In described second technique, formed and do not give tension force by described tension adjustment portion and be in relaxed stateThe free space of (i.e., substantially tension force is the state of 0), and described adhesive applicating do not exists by described adhesive applicating portionDescribed free space, and by described interflow trucking department by and make the described free space of relaxed state be formed as with describedThe non-adhesive state of sheet material；
Then, described elastomer is implemented the 3rd technique, in described 3rd technique, by described protuberance only by described theDescribed free spaces in two techniques, that be in relaxed state and non-adhesive state are divided into two in centre position.
According to this manufacture device (or manufacture method), it not at sheet material but at elastomer adhesive-applying, andOnly at the stretch-draw region adhesive-applying of extended state in first control mode (or first technique), the second control mode (orSecond technique) in there is no adhesive-applying at the free space of relaxed state, therefore, it is possible to the coating amount reducing bonding agent (makesConsumption).Further, since the free space at the second control mode (or second technique) elastomer is in relaxed state and non-stickConnect state, in the 3rd control mode (or the 3rd technique), free space is split, therefore, relative with this free spaceNo matter the part of the sheet material answered, be all formed without waistline wrinkle pleat before and after dressing, thus suppress the generation of defective products and improve productThe qualification rate of product.It addition, such as, even if at waistline (abdominal circumference) close to the higher limit in the size scope of application of disposable diaper etc.People dress in the case of, also will not fasten waist portion with the elastomer of free space, therefore improve wearing feeling.The opposing partyFace, even if because the deviation on manufacturing is in the second control mode (the second technique), some tension force produces (residual) in freedomIn the case of region, in the 3rd control mode (the 3rd technique), free space is split and make tension force before wearing (i.e.,Pack, wrap up, when displaying etc.) be formed as 0, it is to avoid the feelings of waistline wrinkle pleat are formed in the part corresponding with absorber and marking partCondition, thus, does not reduce the absorbability of absorber and the identification of marking part.Thus, simplify the free zone for splitting elastomer3rd control mode (the 3rd technique) in territory, the most also can manufacture disposable wearing article the simplylyst and cheaply.
It addition, at least one in the pair of compression roller is built-in with heater；
In described 3rd control mode (or the 3rd technique), described control portion passes through described heater to described elastomerHeat, thus assist the segmentation of described free space.
So, by extruding based on compression roller (protuberance) and heating based on heater and use, it is possible to easilyCarry out the segmentation (cutting off or melted cut-out) of the free space of elastomer.Furthermore it is preferred that be fixed on sheet material only melting cut-outElastomer in the case of, fusing point is used for elastomer less than the raw material of sheet material.But, even if fusing point is being higher than sheet materialRaw material, in the case of elastomer, still can only cut off elasticity by the extruding force applied based on compression roller (protuberance)Body.Now, if elastomer to be heated to by heater the set point of temperature of below fusing point, then squeezing needed for can alleviating cut-outPressure.
Accompanying drawing explanation
Fig. 1 is the expansion explanatory diagram of an embodiment of the schematic configuration of the disposable diaper representing the present invention.
Fig. 2 is that the section of the line A-A along Fig. 1 amplifies explanatory diagram.
Fig. 3 is that the section of the line B-B along Fig. 1 amplifies explanatory diagram.
Fig. 4 is the perspective illustration of the embodiment representing that the diaper of the present invention manufactures device.
Fig. 5 is the flow chart of the manufacturing process summary of the diaper representing control portion based on Fig. 4.
Fig. 6 is the major part of enlarged drawing 4 and is denoted as the explanatory diagram of manufacturing process of diaper.
Fig. 7 is the expansion explanatory diagram of the reference example of the schematic configuration representing disposable diaper.
Fig. 8 is that the section of the A '-A ' line along Fig. 7 amplifies explanatory diagram.
Fig. 9 is that the section of the B '-B ' line along Fig. 7 amplifies explanatory diagram.
Figure 10 is the perspective illustration of the reference example representing that diaper manufactures device.
Figure 11 is the flow chart of the manufacturing process summary of the diaper representing control portion based on Figure 10.
Figure 12 is to amplify the major part of Figure 10 and be denoted as the explanatory diagram of manufacturing process of diaper.
Description of reference numerals:
Back sheet material (the first sheet material) outside 1
11 display labels (marking part)
Back sheet material (the second sheet material) inside 2
30 waistlines wrinkle pleats are with rubber (elastomer)
TA1 the first stretch-draw region
TA2 the second stretch-draw region
FA free space
301 cut off machines (cutting plate)
10 disposable diapers (disposable wearing article)
100 diapers manufacture device (the manufacture device of disposable wearing article)
110 stretchers (tensioner) (tension adjustment portion)
120 coatings nozzle (adhesive applicating portion)
130 interflow trucking departments
131 first interflow rollers
132 second interflow rollers
133 compression rollers
133a protuberance
133b heater (heater)
140 control portions
AD bonding agent
Detailed description of the invention
(embodiment)
Hereinafter, embodiments of the present invention are illustrated by the most shown embodiment.Fig. 1-Fig. 3 represents the present inventionAn embodiment of disposable diaper.Disposable diaper 10 (disposable wearing article) shown in Fig. 1-Fig. 3 is so-called bodyOne example of liquid absorbent article, also commonly referred to as " pants-type paper diaper ".It is positioned at the substantially central portion of disposable diaper 10Absorber 5, it contains superabsorbent polymer granule and is formed as the variously-shaped of tabular etc., and the most multipleSheet material covers.Such as, the health side (that is, body fluid absorption side) at absorber 5 is provided with the top sheet directly contacted with skinMaterial 6, is provided with back sheet material 1, outside (the first sheet material) and the inner side back of the body in the side (that is, body fluid non-absorbing side) contrary with healthPortion's sheet material 2 (the second sheet material), is additionally provided with leakproof sheet material 4 between absorber 5 and back, inner side sheet material 2.It addition, these sheet materials1,2,4,6 is the non-weaving cloth with flexibility, and top-sheet 6 has liquid permeability, and back sheet material 1,2 and leakproof sheet material 4 haveOpaque liquid.
It addition, in the outside as disposable diaper 10 outmost outside backsheet 1 (that is, with health opposite sideFace), in its many places, (in figure, amounting at two of predecessor position and rear body section position) is pasted with and has printed font mark, name of productDeng display label 11 (marking part).It addition, when predecessor and rear heavy sensation of the body are closed and constitute medicated underpants, the on top waist WS of edgeOpening is formed respectively with the leg LG in left and right edges portion.
In order to form wrinkle pleat (fold, pleat or folding line at sheet material 1,2；Not shown) and laminating merit to health when improving wearingCan be with the drip-preventing function of body fluid, the many places between outside backsheet material 1 and back, inner side sheet material 2 configure the most thread or rope formElongated rubber.In the present embodiment, corresponding with the abdominal circumference of waist portion BD multiple (in figure, amounting at two of front and rear body× each five) waistline wrinkle pleat rubber 30 corresponding with the opening of waist WS multiple (in figure, the amounting at two of front and rear body ×Each two) waist wrinkle pleat rubber 31 and corresponding with the opening of leg LG multiple (in figure, with U-shaped or V-shaped crossTwo) leg rubber 32 be pasted and fixed on the opposed faces of back sheet material 1,2 respectively.
Wherein, waist wrinkle pleat rubber 31 and leg rubber 32 are pasted on back sheet material 1,2 and shape over the whole lengthBecome wrinkle pleat, fit tightly with health to tighten up opening.On the other hand, in order to avoid the absorbefacient reduction of absorber 5 and aobviousThe reduction of the identification of indicating label 11, waistline wrinkle pleat rubber 30 is coinciding with absorber 5 and display label 11 allocation positionPart be formed without wrinkle pleat.It addition, as it is shown in figure 1, leg rubber 32 overlaps with absorber 5 at central authorities' cross section, butOwing to can there is the tendency that this part stretches to the opening direction pull of leg LG when dressing, therefore entirety is pasted onto the back of the bodyPortion's sheet material 1,2.Then, in the following description, only using waistline wrinkle pleat with rubber 30 (elastomer) as object, be the most only recited asRubber 30.
As shown in Figure 1-Figure 3, altogether ten (at two × five) rubber 30 with and column-shaped and outside being arranged in parallel shapeBetween back, side sheet material 1 and back, inner side sheet material 2.At each rubber 30, it is endowed fixing tension force being formed separately aroundAnd it is in the first stretch-draw region and second stretch-draw region TA1, TA2 of extended state, it is not endowed with stretch-draw and is in relaxed stateThe free space FA centre formed therein portion of (that is, being substantially at the state that tension force is 0).As described, rubber 30Free space FA overlaps with the allocation position of absorber 5 and display label 11.Further, only extended state stretch-draw region TA1,TA2 applies adhesive A D of such as thermal welding class and is pasted onto the back sheet material 1,2 of outside and inner side, and the freedom of relaxed stateRegion FA is in non-adhesive state to backsheet 1,2.Therefore, when dressing, the most only by the stretch-draw region in rubber 30The elastic return (contraction) of TA1, TA2 forms wrinkle pleat.
Further, cut-off (segmentation) becomes two in centre position to be in the relaxed state free space FA with non-adhesive stateIndividual.Further, each cut off machine 301,301 (cutting plate) with adjacent, be in extended state and the stretch-draw region of adhering stateTA1, TA2 link integratedly.Further, since free space FA is originally in relaxed state, therefore cut off it and the cut-out that formedSheet 301,301 shrinks the most hardly, thus the state overlapped with display label 11 maintains former state.But, owing to rubber 30 existsIn the rear side (bodyside) of back, outside sheet material 1, thus without the identification hindering display label 11.
Being as noted previously, as is not at back sheet material 1,2 but at rubber 30 adhesive-applying AD, and only in stretchingStretch-draw region TA1, TA2 adhesive-applying AD of state, and adhesive A D uncoated is at the free space FA of relaxed state, because ofThis, it is possible to reduce the coating amount (usage amount) of adhesive A D.Further, since the free space FA of rubber 30 be in relaxed state andNon-adhesive state, and avoided in the part shape corresponding with absorber 5 and display label 11 by the segmentation of free space FABecome wrinkle pleat, therefore, do not reduce absorbability and the identification of display label 11 of absorber 5, the generation of suppression defective products, improve and produceThe qualification rate of product.Further, since being breaking at of free space FA (is divided into two), and with free space FA phaseThe part of corresponding back sheet material 1,2 is formed without the pleat that wrinkles, therefore, it is possible to be simply formed Cutting process (with the equipment of cut-out).Further, though waistline (abdominal circumference) close to the higher limit in the size scope of application of disposable diaper 10 people dress situationUnder, also will not fasten waist portion with the rubber 30 of free space FA, therefore improve wearing feeling.
Secondly, Fig. 4 represents that the diaper of the present invention manufactures an embodiment of device.Diaper shown in Fig. 4 manufactures device 100(the manufacture device of disposable wearing article) including: stretcher 110 (tension adjustment portion), and it is for adjusting to rubber 30 impartingTension force；Coating nozzle 120 (adhesive applicating portion), it is at rubber 30 adhesive-applying AD；Interflow trucking department 130, it is usedCollaborate with rubber 30 in making back sheet material 1,2 and carry；Control portion 140, it is used for making these stretchers 110, coating sprayMouth 120 and the action of interflow trucking department 130 are also controlled.
Stretcher 110, the rubber 30 of or rope form thread to multiple (being ten in the drawings) in the lump (simultaneously) give tension force andAdjust this tension force.In the case of individually tension force being adjusted, multiple stretcher 110 is set and also may be used.Coating nozzle 120 is toMultiple rubber 30 of adjustment tension force spray adhesive A D of the hot melt class of molten condition in the lump (simultaneously) and are coated.IndividuallyIn the case of tension force is adjusted, from multiple independent adhesive-applying AD of coating nozzle 120.It addition, in lamellar or bandingIn the case of rubber, the surface a pair coating nozzle 120 with the back side is set.
Multiple rubber 30 are individually collaborated back sheet material 1,2 and carry, the plurality of rubber 30 by interflow trucking department 130It is coated with adhesive A D by the modulated whole tension force of stretcher 110 and by coating nozzle 120.To this end, interflow trucking department 130 hasHaving: the first interflow roller 131 (being driven by the first motor 131M) of monomer, this first interflow roller 131 is used for making multiple rubber 30 HeOutside backsheet 1 is fitted and carries；A pair second interflow rollers 132 (being driven by the second motor 132M), this second interflow roller132 downstreams being arranged on described carrying direction, and by inner side backsheet 2 from the side laminating contrary with outside backsheet 1In to rubber 30 and carry.
Further, in the downstream in the carrying direction of the second interflow roller 132, interflow trucking department 130 includes a pair compression roller(being driven by the 3rd motor 133M), this pair compression roller 132 is for the back sheet material 1,2 clamped with rubber 30 laminating and revolvesTurn carrying.Any one (in the drawings, be configured at the diameter roll on top) in compression roller 133, is formed from its outer peripheral faceThe protuberance 133a prominent to radial outside.Protuberance 133a in the circumferential one at be axially formed, and there is following function: withBetween the outer peripheral face of another compression roller 133 (cylindric major diameter roller), rubber 30 is applied extruding force, thus pine will be inThe free space FA of relaxation state and non-adhesive state cuts off the function that (segmentation) is two in centre position.
It addition, be built-in with heater 133b (heater) respectively in the inside of a pair compression roller 133.Heater 133b hasThe function cut-out of free space FA assisted by (via backsheet 1,2) heat rubber 30.
Control portion 140, the heart has wherein: as the CPU141 of arithmetic unit；As reading dedicated storage meansROM142；RAM143 as read-write main storage means, as working region；Input/output interface (I/F) 144.ControlThe drive division (not shown) of portion 140 processed and stretcher 110, the coating drive division (not shown) of nozzle 120, the first interflow roller 131The first motor 131M, second interflow the second motor 132M of roller 131, the 3rd motor 133M and heater of compression roller 133Signal between 133b etc. is via input/output interface (I/F) 144 input and output.
Secondly, according to the flow chart of Fig. 5 and illustrate with reference to Fig. 4, Fig. 6: manufacture the diaper manufacture process of device 100 at diaperIn, after rubber 30 is fitted with back sheet material 1,2, each technique in the case of free space FA only cuts off rubber 30.SeparatelyOutward, as shown in Fig. 4, Fig. 6, owing to back sheet material 1,2 and rubber 30 are being equivalent to the zoning of multiple disposable diaper 10 evenOne after the other carry under continuous state, therefore, in the way of carrying out, implement different technique in each zoning simultaneously.Here,Being conceived to specific zoning, the time series made along braking illustrates the manufacture that this zoning is carried out while moving successivelyTechnique, wherein said control action is based on the control signal from control portion 140 (CPU141).
(preparatory technology)
In S1, drive first interflow roller 131 (the first motor 131M), second interflow roller 132 (the first motor 132M), withAnd compression roller 133 (the 3rd motor 133M), and start to supply rubber 30, outer back panel material 1 and interior rear flank by these actionsSheet material 2.
(the first technique (for the first time))
In S2, by the action of stretcher 110, rubber 30 is given the tension force of regulation, is consequently formed maintenance extended stateThe first stretch-draw region TA1.Then, in S3, by the action of coating nozzle 120, adhesive A D is coated in the first stretch-drawRegion TA1, in S4, with the end of the first stretch-draw region TA1, stops the action of coating nozzle 120.In S5, firstDraw region TA1 with extended state by the first interflow roller 131, thus be fixed on back, outside sheet material 1 with adhering state.
(the second technique)
In S6, stop the action of stretcher 110, and form the free zone being in the relaxed state that substantially tension force is zeroTerritory FA.Now, owing to the action of coating nozzle 120 stops (S4), therefore adhesive A D is not coated in free space FA.?In S7, free space FA collaborates roller 131 with relaxed state by first, thus is formed as the non-adhesive shape to outside backsheet 1State.
(the first technique (for the second time))
In S8, rubber 30 is given the tension force of regulation by the action of stretcher 110, thus maintain extended stateSecond stretch-draw region TA2.Then, in S9, by the action of coating nozzle 120, adhesive A D is coated in the second stretched zoneTerritory TA2, in S10, with the end of the second stretch-draw region TA2, stops the action of coating nozzle 120.In S11, secondDraw region TA2 with extended state by the first interflow roller 131, thus be fixed on back, outside sheet material 1 with adhering state.
Thus, rubber 30 is in the long dimensional directions of continuous print back sheet material 1,2, i.e. carry (the right and left of diaper, directionTo) on, it is fixed on back, outside sheet material 1 with free space FA state between first and second stretch-draw region TA1, TA2(with reference to Fig. 6).It addition, the second stretch-draw region TA2 of diaper formerly and the first stretch-draw region TA1 continuous print of follow-up diaperIn the case of, in S10, coating nozzle 120 does not stop its action and may be used yet.In this case, it is possible to the first technique formerly(for the second time) mode of the S4 → S5 of first technique (for the first time) of S8 → S9 → S11 → follow-up is carried out continuously, and makesCoating nozzle 120 continuous action is until follow-up S4.
(covering process)
In S12, rubber 30 and back, outside sheet material 1 and back, the inner side 2-in-1 stream of sheet material also collaborate roller 132 by second.Thus, back, inner side sheet material 2 be adhered to from the opposition side of back, outside sheet material 1 rubber 30 the first and second stretch-draw region TA1,TA2 also fixes, thus forms non-adhesive state (with reference to Fig. 6) at free space FA.
(the 3rd technique)
In S13, the heater 133b of compression roller 133 is made to carry out action, simultaneously by protuberance 133a only by rubber 30Free space FA is cut to two (with reference to Fig. 6) in centre position.
(process ends)
The summary description of diaper manufacturing processes PS afterwards is as follows.Leakage prevention sheet is loaded successively on back, inner side sheet material 2Material 4, absorber 5, top-sheet 6 are also fixed (with reference to Fig. 3).Constituting the first cutting wires CL1 on diaper border and be used forForm the second cutting wires CL2 of the opening of leg LG, cut off this coincident sheet material, thus manufacture disposable diaper, afterwards by itReduce by half and engage the left and right edges portion of waist portion BD, thus completing pants type (with reference to Fig. 6).
By each technique as above, it is possible to manufacture the disposable diaper 10 shown in Fig. 1-Fig. 3.By this manufacturerMethod, is not in backsheet 1,2 but at rubber 30 adhesive-applying AD, and in the first process only in the stretch-draw of extended stateRegion TA1, TA2 adhesive-applying AD, in the second technique, owing to the free space FA at relaxed state does not apply bondingAgent, therefore, it is possible to reduce the coating amount (usage amount) of adhesive A D.It addition, in the second technique, the free space FA of rubber 30Be in relaxed state and non-adhesive state, in the 3rd technique, by the segmentation of free space FA avoid with absorber 5 andThe part formation wrinkle pleat that display label 11 is corresponding, therefore, does not reduce absorbability and the identification of display label 11 of absorber 5Property, it is possible to suppress the generation of defective products thus improve the qualification rate of product.It addition, in the 3rd technique, due to free space FABe breaking at and (be divided into two) at one and complete, and in the part of the back sheet material 1,2 corresponding with free space FADo not form wrinkle pleat, be therefore formed without defective products.
(reference example)
Fig. 7-Fig. 9 represents the reference example of disposable diaper.In the disposable diaper 10 shown in Fig. 7-Fig. 9, rubber 30Free space FA does not cut off and keeps its state.Therefore, free space FA will be located in the first and second stretch-draw regions of both sidesTA1, TA2 (these be in extended state and with the bonding state of back sheet material 1,2) with relaxed state and non-with back sheet material 1,2Adhering state is attached.
It addition, in the diaper shown in Figure 10 manufactures the interflow trucking department 130 of device 100, omit compression roller and (be equivalent to figureThe reference 133 of 4), and eliminate Cutting process (phase in the description of the process figure shown in the flow chart shown in Figure 11 and Figure 12When in the S 13 of Fig. 5).
So, by omitting shearing device and Cutting process, the further reduction of manufacturing cost can be sought, it is possible to moreManufacture disposable diaper 10 cheaply.
In above embodiment, only disposable diaper, the manufacture device of this disposable diaper and manufacture method are enteredGo explanation, but, the present invention can also be in the disposable wearing article (body fluids absorbent article) beyond disposable diaperImplement.
It addition, in reference example (Fig. 7-Figure 12), to the additional phase in position with embodiment (Fig. 1-Fig. 6) with common functionWith reference and omit it and illustrate.