WO2018110070A1 - パンツ型使い捨ておむつ - Google Patents

パンツ型使い捨ておむつ Download PDF

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Publication number
WO2018110070A1
WO2018110070A1 PCT/JP2017/037430 JP2017037430W WO2018110070A1 WO 2018110070 A1 WO2018110070 A1 WO 2018110070A1 JP 2017037430 W JP2017037430 W JP 2017037430W WO 2018110070 A1 WO2018110070 A1 WO 2018110070A1
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WO
WIPO (PCT)
Prior art keywords
sheet
layer sheet
inner layer
region
pants
Prior art date
Application number
PCT/JP2017/037430
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
優輔 浦山
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to RU2019121663U priority Critical patent/RU196610U1/ru
Priority to CN201790001491.9U priority patent/CN210644353U/zh
Publication of WO2018110070A1 publication Critical patent/WO2018110070A1/ja

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/496—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies in the form of pants or briefs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads

Definitions

  • the present invention relates to a pants-type disposable diaper.
  • Disposable diapers include so-called pants-type disposable diapers in which an exterior body is arranged outside a vertically long absorbent main body provided with an absorber.
  • the present applicant has previously proposed a technique of using a spunbonded nonwoven fabric satisfying predetermined physical property values on the outer surface of such a pants-type disposable diaper exterior body (for example, Patent Document 1).
  • the present invention has an abdominal region disposed on the ventral side of the wearer, a dorsal region disposed on the dorsal side, and a crotch region positioned therebetween, and from the ventral region to the crotch region.
  • An absorbent main body having a longitudinal direction extending to the dorsal region and a lateral direction perpendicular thereto and including a liquid-retaining absorbent, and disposed on the non-skin facing surface side of the absorbent main body And a pair of side seal portions and a waist opening by joining both side edges along the longitudinal direction of the exterior body in each of the ventral region and the dorsal region.
  • a pair of pants-type disposable diapers in which a pair of leg openings are formed.
  • the exterior body includes an outer layer sheet forming a non-skin facing surface of the pants-type disposable diaper, an inner layer sheet disposed on the skin facing surface side of the outer layer sheet, and at least one of the ventral region and the dorsal region
  • seat distribute
  • the outer layer sheet and the inner layer sheet have portions fused to each other by a plurality of fused portions that are intermittently disposed between the adjacent elastic members.
  • the skin side sheet is a spunbonded nonwoven fabric having a basis weight of 17 g / m 2 or less.
  • the skin side sheet and the inner layer sheet have portions bonded by a first adhesive.
  • the first adhesive forms a continuous line extending in the horizontal direction while being folded back in the vertical direction when the pants-type disposable diaper is unfolded and extended in plan view.
  • FIG. 1 is a perspective view of a pants-type disposable diaper that is a preferred embodiment of the present invention.
  • FIG. 2 is a partially broken plan view of the diaper shown in FIG. 1 unfolded and stretched as viewed from the skin contact surface side.
  • 3 is a cross-sectional view taken along line III-III shown in FIG.
  • FIG. 4 is a development for explaining a state in which the inner layer folded portion is formed by folding the inner layer sheet and the skin side sheet is formed by the outer layer folded portion obtained by folding the outer layer sheet in the exterior body provided with the diaper shown in FIG.
  • FIG. 5 is a view of a state in which the outer body provided with the diaper shown in FIG.
  • FIG. 1 is expanded and the outer layer sheet before forming the folded portion and the inner layer sheet before forming the folded portion are expanded from the skin contact surface side.
  • FIG. FIG. 6 is an enlarged developed plan view in which a back side region of the developed plan view shown in FIG. 5 is enlarged.
  • Fig.7 (a) is sectional drawing which looked at the state which extended the elastic member and extended the inner layer sheet
  • FIG.7 (b) is an inner layer when an elastic member contracts. It is sectional drawing which looked at the state which the sheet
  • the disposable diaper of the present invention has a ventral region A disposed on the wearer's ventral side, a dorsal region B disposed on the dorsal side, and a crotch region C positioned therebetween, and a ventral region A. From the crotch region C to the back region B and a horizontal direction Y orthogonal to the vertical direction X.
  • the abdominal region A is a region disposed on the wearer's abdomen when wearing the disposable diaper
  • the back region B is a region disposed on the wearer's back when wearing the disposable diaper.
  • FIGS. 1 and 2 show a disposable diaper 1 (hereinafter also referred to as “diaper 1”), which is an embodiment of a pants-type disposable diaper according to the present invention.
  • the diaper 1 is arranged on the non-skin-facing surface side of the absorbent main body 2 including the liquid-retaining absorbent 23 and fixes the absorbent main body 2.
  • the exterior body 3 is provided.
  • the diaper 1 has both side edges (left and right side edges) 3a1, 3a1 along the longitudinal direction X of the ventral region A of the exterior body 3 and both side edges (left and right sides) along the longitudinal direction X of the back side region B of the exterior body 3.
  • a disposable diaper in which a pair of side seal portions S, S, a waist opening WH, and a pair of leg openings LH, LH are formed by joining the side edges 3b1, 3b1.
  • the exterior body 3 of the diaper 1 is, as shown in FIG. 2, a plan view of the expanded and extended state of the diaper 1, and a ventral region A disposed on the wearer's ventral side when worn, It is divided into a dorsal region B arranged on the back side of the wearer at the time of wearing, and a crotch region C between the ventral region A and the dorsal region B.
  • the state where the diaper 1 is expanded and extended as described above is a state where the side seal portion S is peeled off so that the diaper 1 is in an expanded state, and the expanded diaper 1 is replaced with an elastic member of each part. Is extended to the design dimension (same as the dimension when flattened in a state where the influence of the elastic member is completely eliminated).
  • the “skin facing surface” is a surface of the diaper 1 or a component thereof that faces the wearer's skin when worn, and the “non-skin facing surface” refers to the diaper 1 or a component thereof. Is a surface that is directed to the side opposite to the wearer's skin side (clothing side) when worn.
  • the vertical direction (X direction) is a direction extending from the ventral region A to the dorsal region B in a state where the diaper 1 is expanded and extended on a plane.
  • the horizontal direction (Y direction) is a direction orthogonal to the vertical direction (X direction), and is the width direction of the diaper 1 in a state where the diaper 1 is expanded and extended on a plane.
  • the diaper 1 is a left-right symmetric form with respect to the vertical centerline CL1 extended in a vertical direction (X direction) shown in FIG. 2 is a horizontal center line extending in the horizontal direction (Y direction) that bisects the diaper 1 in the vertical direction (X direction), and is orthogonal to the vertical center line CL1.
  • the absorbent main body 2 has a vertically long shape in which the longitudinal direction (X direction) is relatively long when the diaper 1 is expanded and stretched.
  • the absorptive main body 2 includes a liquid-permeable surface sheet 21 that forms a skin-facing surface, a liquid-permeable surface sheet (including water repellency) that forms a non-skin-facing surface, and both of these sheets 21 and 22. And a liquid-retaining absorbent 23 interposed therebetween.
  • the total length in the longitudinal direction (X direction) of the absorbent main body 2 is the same as that of the absorber 23, and the positions of the outer end edges 23A1 and 23B1 of the front and rear end portions 23A and 23B of the absorber 23 are as shown in FIG.
  • the outer end edge of the absorbent main body 2 is in the same position as the outer edge.
  • a leak-proof cuff 24 having an elastic member 25 arranged in an elongated state in the longitudinal direction (X direction), 24 is provided.
  • the leak-proof cuff 24 is made of a liquid-impermeable or water-repellent and breathable material, and in the vicinity of the free end of each leak-proof cuff 24, a leak-proof cuff forming elastic member. 25 is arranged in a state of extending in the vertical direction (X direction).
  • X direction the vertical direction
  • the free end portion side of the leak-proof cuff 24 rises due to the contraction of the leak-proof cuff forming elastic member 25, and the outflow of body fluid in the lateral direction (Y direction) is prevented.
  • the absorbent body 23 includes only the lower layer absorbent body 231 extending from the ventral region A through the crotch region C to the dorsal region B, and the ventral region A to the crotch region C.
  • the upper absorbent body 232 is extended, and the upper absorbent body 232 and the lower absorbent body 231 are divided into a high basic weight portion 23K having a high basis weight and a peripheral absorbent region 23S around the high basic weight portion 23K.
  • the lower layer absorbent body 231 is formed in a rectangular shape that is long in the longitudinal direction X over the entire length of the diaper 1 in the longitudinal direction X, and matches the contour shape when the absorbent main body 2 is viewed in plan.
  • the length of the upper layer absorber 232 in the vertical direction X is shorter than the length of the lower layer absorber 231 in the vertical direction X
  • the length in the horizontal direction Y is the length of the lower layer absorber 231 in the horizontal direction Y.
  • the rectangular shape is shorter and longer in the vertical direction X.
  • the high basis weight portion 23K is a region having a two-layer structure including an upper layer absorber 232 and a lower layer absorber 231
  • the peripheral absorption region 23S is a region having a single layer structure including only the lower layer absorber 231.
  • the basis weight of the high basis weight portion 23K is larger than the basis weight of the peripheral absorption region 23S.
  • the thickness of the high basis weight portion 23K is larger than the thickness of the peripheral absorption region 23S.
  • the upper layer absorbent body 232 is disposed only from the ventral region A to the crotch region C, and the high basis weight portion 23K is formed at a position displaced to the ventral region A side. ing.
  • the basis weight of the absorbent core constituting the lower layer absorbent body 231 is preferably 100 g / m 2 or more 1000 g / m 2 or less.
  • the basis weight of the core wrap sheet constituting the lower layer absorbent body 231 is preferably 3 g / m 2 or more and 20 g / m 2 or less.
  • the basis weight of the absorbent core constituting the upper layer absorbent body 232 is preferably 50 g / m 2 or more 500 g / m 2 or less.
  • the basis weight of the core wrap sheet constituting the upper layer absorbent body 232 is preferably 3 g / m 2 or more and 20 g / m 2 or less.
  • the absorbent main body 2 configured as described above has its longitudinal direction (X direction) aligned with the longitudinal direction (X direction) of the diaper 1 in the unfolded and extended state. It is joined to the center part of 3 by the main body fixing adhesive. As described above, the outer package 3 is arranged and bonded and fixed to the non-skin facing surface side of the back sheet 22 constituting the absorbent main body 2 in the thickness direction of the disposable diaper 1. Therefore, in the diaper 1, the absorbent body 23 constituting the absorbent main body 2 is disposed across the ventral region A and the back region B.
  • the outer package 3 is arranged on the outer layer sheet 6 that forms the outer surface of the diaper 1, that is, the non-skin facing surface when worn, and the skin facing surface side of the outer layer sheet 6.
  • the inner layer sheet 5, the skin side sheet 6E disposed on the skin facing surface side of the inner layer sheet 5 in the ventral region A and the back region B, and the outer layer sheet 6 and the inner layer sheet 5 are stretched in the lateral direction Y And a plurality of elastic members 71 arranged in the above.
  • the exterior body 3 includes an outer layer sheet 6 that forms a non-skin facing surface of the diaper 1, an inner layer sheet 5 on the skin facing surface side of the outer layer sheet 6, and a skin facing surface side of the inner layer sheet 5.
  • the exterior body 3 includes a plurality of elastic members 71 arranged in an extended state in the lateral direction Y between the outer layer sheet 6 and the inner layer sheet 5, and the elastic members 71 are spaced apart in the longitudinal direction X. Are arranged.
  • seat 5 is the outer end part 1B of the vertical direction X in the back side area
  • the inner periphery of the diaper 1 is folded at the peripheral edge, and the inner layer folded portion 5E is formed by the folding (see FIG. 4).
  • the inner layer sheet 5 is folded back to the inner surface side of the diaper 1 at the outer end 1A in the longitudinal direction X in the ventral region A of the diaper 1, in other words, at the peripheral edge of the waist opening WH. It has an inner layer folded portion 5E formed by the folding.
  • the inner layer sheet 5 of the diaper 1 has the inner layer folded portion 5E on the back side region B side and the inner layer folded portion 5E on the ventral region A side.
  • the inner folded portion 5 ⁇ / b> E extends from the peripheral edge of the waist opening WH toward the crotch region C to a position that does not reach the end in the longitudinal direction X of the absorbent main body 2.
  • the inner layer folded portion 5 ⁇ / b> E overlaps with the skin facing surface of the inner layer sheet 5.
  • the inner layer sheet 5 having the inner layer folded portion 5E is formed of a hydrophobic nonwoven fabric made of hydrophobic fibers.
  • a hydrophobic nonwoven fabric a spunbond nonwoven fabric is preferable.
  • the spunbonded nonwoven fabric forming the inner layer sheet 5 preferably has a basis weight of 15 g / m 2 or more and 19 g / m 2 or less from the viewpoint of reducing the rigidity.
  • seat 6E is the back side skin side sheet
  • seat 6EA distribute
  • the outer layer sheet 6 has an inner layer folded portion in the back end region B at the outer end 5B on the back side region B side in the longitudinal direction X of the inner layer sheet 5, in other words, at the peripheral edge of the waist opening WH. It is folded back to the skin facing surface side of 5E (the inner surface side of the diaper 1), and has a dorsal skin side sheet 6EB formed by the folding (see FIG. 4).
  • the outer layer sheet 6 has an outer end portion 5A on the ventral region A side in the longitudinal direction X of the inner layer sheet 5, in other words, at the peripheral portion of the waist opening WH. It is folded back to the skin facing surface side (the inner surface side of the diaper 1), and has a ventral skin side sheet 6EA formed by the folding.
  • the skin-side sheet 6 ⁇ / b> E is a skin of the inner-layer sheet 5 in the back-side region B and the ventral-side region A along the peripheral edge of the waist opening WH. It is formed of an outer layer folded portion that is folded to the opposite surface side.
  • the skin side sheet 6E of the diaper 1 includes a back side skin side sheet 6EB formed by folding the back side region B and a ventral side skin sheet 6EA formed by folding the ventral region A side. .
  • the skin side sheet 6E is formed by the outer layer folded portion of the outer layer sheet 6, it becomes a bag-like structure in which the end portion in the longitudinal direction X of the inner layer sheet 5 is not exposed, and the end portion of the inner layer sheet 5 is It is possible to prevent the wearer from touching the skin, and it is difficult to irritate the skin.
  • seat 6EB is distribute
  • the ventral skin side sheet 6EA is arranged from the peripheral edge of the waist opening WH to a position covering the end 23A on the ventral region A side of the absorber 23.
  • the skin side sheet 6E having the dorsal skin side sheet 6EB and the ventral skin side sheet 6EA is arranged from the peripheral edge of the waist opening WH toward the crotch region C.
  • the waist opening From the periphery of WH toward the crotch region C, it extends to the position covering the front and rear end portions 23A, 23B in the longitudinal direction X of the absorbent body 23, over the entire inner layer folded portion 5E.
  • seat 6E is formed in the vertical direction X longer than the inner-layer folding
  • the skin side sheet 6E thus arranged covers the front and rear end portions 23A, 23B in the longitudinal direction X of the absorbent body 23 constituting the absorbent main body 2. Therefore, the skin-side sheet 6E can prevent the front and rear end portions 23A, 23B of the absorbent body 23 constituting the absorbent main body 2 from touching the wearer's skin, making it difficult to irritate the skin.
  • the absorbent body 23 since the high basis weight portion 23K of the absorbent body 23 is formed at a position displaced toward the ventral region A, the absorbent body 23 is covered with the dorsal skin side sheet 6EB.
  • the basis weight of the end portion 23B on the back side region B side is smaller than the basis weight of the end portion 23A on the ventral region A side of the absorbent body 23 covered with the ventral skin side sheet 6EA. Therefore, when the diaper 1 is worn, it is difficult to irritate the skin on the back region B side where the variation in bending is large in order to cover the buttocks of the wearer.
  • the skin side sheet 6E having the back side skin side sheet 6EB and the ventral side skin side sheet 6EA is formed of a spunbonded nonwoven fabric, and the basis weight thereof is 17 g / m 2 or less from the viewpoint of reducing rigidity. It is preferably 15 g / m 2 or less. In addition, it is preferable that it is 10 g / m ⁇ 2 > or more as a lower limit of the basic weight of a spun bond nonwoven fabric.
  • the skin side sheet 6E is formed of the outer layer folded portion of the outer layer sheet 6, and the outer layer sheet 6 including the skin side sheet 6E is formed of the spunbonded nonwoven fabric.
  • the spunbond nonwoven fabric to be used is preferably formed from a propylene polymer which is a polyolefin polymer, from the viewpoint of forming a flexible nonwoven fabric.
  • the propylene polymer is preferably a propylene polymer having a molecular weight distribution (Mn / Mn) of 1.5 or more and 3.5 or less.
  • the propylene-based polymer from the viewpoint of forming a smooth and flexible nonwoven fabric, 5 to 100% by weight, more preferably 25 to 80% by weight, of at least one of random copolymer, homopolymer and block copolymer is used. It is preferable that it consists of resin which contained. These copolymers and homopolymers may be mixed, other resins may be mixed, and a mixture of polypropylene homopolymer and random copolymer may be used. Further, as the random copolymer based on the propylene component, a copolymer copolymerized with ethylene or ⁇ -olefin is preferable, and an ethylene-propylene random copolymer is particularly preferable.
  • the propylene-based polymer is preferably a polymer containing 5 to 100% by weight of an ethylene-propylene random copolymer as a main component, and more preferably a polymer containing 25% by weight or more. preferable.
  • the ethylene content is preferably 2.0 mol% or more and 10.0 mol% or less, and the ethylene content is more preferably 3.0 mol% or more and 8.0 mol% or less.
  • the propylene polymer is preferably a polymer containing 25% by weight or more of recycled polypropylene resin, and more preferably a polymer containing 50% by weight or more from the viewpoint of the environment.
  • the spunbonded nonwoven fabric used for the outer layer sheet 6 including the skin-side sheet 6E preferably has a crimped long fiber content of 30% by mass or more, and more preferably 40% by mass or more.
  • it is preferably 100% by mass or less, more preferably 90% by mass or less, specifically, from the viewpoint of compatibility between flexibility and form stability, 30% by mass. % To 100% by mass, more preferably 40% to 90% by mass.
  • the crimped continuous fiber is, for example, melt-spun thermoplastic resin and then cooling the melt-spun filament by applying cooling air at different temperatures from the left and right or front and rear, or cooling air from one side. ⁇ which is formed by cooling with contact or cooling or cooling a filament that has been melt-spun as a modified cross-section fiber or an eccentric hollow fiber, or a complex melt-spun filament using a polymer having a different melting point The fiber which shrinks is shown.
  • the crimped long fiber is usually an actual crimped long fiber having a number of crimps of preferably 10 pieces / 25 mm or more, more preferably 15 pieces / 25 mm or more, and particularly preferably 20 pieces / 25 mm or more.
  • the actual crimped filaments preferably have a fiber diameter in the range of 0.5d to 5.0d, and more preferably in the range of 0.5d to 3.0d.
  • the number of crimps of the crimped long fiber is measured by the following measuring method.
  • the spunbonded nonwoven fabric used for the outer layer sheet 6 including the skin side sheet 6E has a breaking strength in the direction perpendicular to the orientation direction of the constituent fibers of 7.0 N / 50 mm or more from the viewpoint of prevention of breakage during use and processability. It is preferably 8.0 N / 50 mm or more, and preferably 30.0 N / 50 mm or less, specifically 7.0 N / 50 mm or more and 30.0 N / 50 mm or less. It is preferable that it is 8.0 N / 50 mm or more and 30.0 N / 50 mm or less.
  • the breaking strength is measured by the following measurement method.
  • the outer sheet 6 is cut into a rectangular shape of 50 mm in the CD direction along the orientation direction of the constituent fibers and 200 mm in the MD direction perpendicular to the CD direction.
  • the cut measurement piece is used as a measurement sample.
  • the measurement sample is attached to a chuck of a tensile tester (for example, Tensilon tensile tester “RTA-100” manufactured by Orientec Co., Ltd.) so that the MD direction is the tensile direction.
  • the gap between chucks is 150 mm.
  • the measurement sample is pulled at a speed of 300 mm / min, and the maximum load point until the measurement sample is broken is defined as the breaking strength in the direction (MD direction) orthogonal to the orientation direction of the constituent fibers.
  • the spunbonded nonwoven fabric used for the outer layer sheet 6 including the skin-side sheet 6E has a plurality of heat-sealed portions that constitute the spunbonded nonwoven fabric by fixing its constituent fibers.
  • each of the plurality of heat-sealing parts preferably has an area of 0.3 mm 2 or less, and more preferably 0.1 mm 2 or more and 0.25 mm 2 or less. It is particularly preferably 0.1 mm 2 or more and 0.2 mm 2 or less.
  • the number of heat-sealing parts is preferably 10 / cm 2 or more and 250 / cm 2 or less, and more preferably 35 / cm 2 or more and 65 / cm 2 or less.
  • the spunbonded nonwoven fabric used for the outer layer sheet 6 including the skin side sheet 6E is a flexible nonwoven fabric in which the ratio (embossing rate) of the total area of the plurality of heat-sealing portions occupying the surface area of one surface is flexible and soft to the touch. Therefore, it is preferably 15% or less, more preferably 5% or more and 13% or less, and particularly preferably 6% or more and 11% or less.
  • the heat-sealed portion constituting the spunbonded nonwoven fabric used for the outer layer sheet 6 including the skin-side sheet 6E is formed intermittently by thermocompression bonding using embossing (by an embossed convex roll and a flat roll), ultrasonic waves Examples thereof include those obtained by fusing and those obtained by partial hot fusing by intermittently applying hot air. Of these, thermocompression bonding is preferred in that the fiber can be easily broken.
  • the shape of the heat fusion part is not particularly limited, and may be any shape such as a circle, a rhombus, and a triangle.
  • the exterior body 3 includes the outer layer sheet 6 from the outer surface side of the diaper 1 toward the inner surface side of the diaper 1 in the back region B and the ventral region A as shown in FIG. 3.
  • the inner layer sheet 5, the inner layer folded portion 5E, and the skin side sheet 6E that is the folded portion of the outer layer sheet 6 are provided in this order.
  • the outer layer sheet 6 and the inner layer sheet 5 excluding the inner layer folded portion 5E and the skin side sheet 6E are bound inward toward the vertical center line CL1 in the longitudinal direction (X direction) central portion, and are identical to each other. It is formed in the same size.
  • the inner layer folding portion 5E is formed in a rectangular shape that is long in the lateral direction (Y direction) in the back region B and the ventral region A.
  • the skin side sheet 6E is formed in a rectangular shape that is long in the lateral direction (Y direction) in each of the ventral region A and the back region B.
  • the skin side sheet 6E, the inner layer folded portion 5E, the inner layer sheet 5 and the outer layer sheet 6 may be separate sheets.
  • the skin side sheet 6E is formed by the folded portion of the outer layer sheet 6.
  • the inner layer folded portion 5E is formed by the folded portion of the inner layer sheet 5.
  • the end portions may or may not overlap each other, but it is preferable that they do not overlap each other from the viewpoint of forming a large number of first non-joining portions 91N.
  • a plurality of second rows are arranged. They are fixed to each other by a second adhesive 92 forming a continuous line of the adhesive 92.
  • the outer layer sheet 6 and the inner layer sheet 5 are fixed to each other by a second adhesive 92 forming a continuous line, and a portion surrounded by the second adhesive 92 is a second non-joined portion 92N.
  • the end portions may or may not overlap each other, but it is preferable that they do not overlap each other from the viewpoint of forming a large number of second non-joining portions 92N.
  • the spiral width of the second adhesive 92 is the same as the spiral width of the first adhesive 91 in that the distance between one vertical X end and the other vertical X end in the folding of the continuous line is as follows. means. In the diaper 1, since the continuous line of the second adhesive 92 forms a spiral, it can be regarded as the diameter of a spiral spiral circle formed by the continuous line of the second adhesive 92.
  • returning part 5E which comprises the exterior body 3 and the inner layer sheet 5 are being fixed.
  • the inner layer folded portion 5E and the inner layer sheet 5 are bonded to each other through a bonding means such as an adhesive, a heat seal, a high frequency seal, and an ultrasonic seal at a predetermined portion.
  • the diapers 1 are preferably bonded and fixed with a fourth adhesive 94.
  • the fourth adhesive 94 forms a continuous line extending in the horizontal direction while being folded back in the vertical direction X in a state where the outer layer sheet 6 and the inner layer sheet 5 before the folded portion shown in FIG.
  • the continuous lines of the fourth adhesive 94 adjacent to each other in the vertical direction X overlap each other at the end in the vertical direction X.
  • each elastic member 71 is an outer layer sheet through a third adhesive 93 at both side edges 3a1, 3a1 of the ventral region A of the exterior body 3 and both side edges 3b1, 3b1 of the back region B of the exterior body 3. 6 and the inner layer sheet 5.
  • the third adhesive 93 is applied only on the surface of each elastic member 71 using a comb gun generally used in the field of absorbent articles, and both side edges of the ventral region A of the exterior body 3.
  • both side edges 3b1 and 3b1 of the backside region B of 3a1 and 3a1 and the exterior body 3 have portions where the third adhesive 93 is not disposed between the adjacent elastic members 71.
  • the inner layer sheet 5 and the outer layer sheet 6 are provided on both side edges 3 a 1 and 3 a 1 of the ventral region A of the outer package 3 and both side edges 3 b 1 and 3 b 1 of the back region B of the outer package 3. It has a pair of outer fixing regions 3T1 and 3T1 joined via a third adhesive 93 for fixing the elastic member.
  • the non-skin facing surface of the inner layer sheet 5 or the skin facing surface of the outer layer sheet 6 is applied in a planar shape using a coater generally used in the field, and the plurality of elastic members 71 are connected to the inner layer sheet 5 by the fifth adhesive 95 applied in a planar shape.
  • a pair of main body side fixing regions 3T2 and 3T2 joined to the outer layer sheet 6 are provided.
  • a plurality of elastic members 71 are arranged between the pair of outer fixing regions 3T1, 3T1, and these elastic members 71
  • the inner layer sheet 5 and the outer layer sheet 6 are fixed between the inner layer sheet 5 and the outer layer sheet 6 by the third adhesive 93, while between the pair of outer fixing regions 3T1 and 3T1. 6 is not fixed.
  • a plurality of elastic members 71 are arranged between the pair of outer fixing regions 3T1 and 3T1, and these elastic members 71 are paired with the pair of outer fixing regions.
  • the inner layer sheet 5 and the outer layer sheet 6 are fixed between the inner layer sheet 5 and the outer layer sheet 6, while between the pair of outer fixed regions 3T1 and 3T1 including the central region in the lateral direction Y. None of them are fixed.
  • a plurality of elastic members 71 are disposed between the outer fixed region 3T1 and the main body side fixed region 3T2,
  • the elastic member 71 is fixed between the inner layer sheet 5 and the outer layer sheet 6 in each of the outer fixed region 3T1 and the main body side fixed region 3T2, while between the outer fixed region 3T1 and the main body side fixed region 3T2. Is not fixed to any of the inner layer sheet 5 and the outer layer sheet 6.
  • the elastic member 71 is not disposed between the pair of main body side fixing regions 3T2 and 3T2, or the elastic member 71 is fine so as not to exhibit elastic stretchability. It is arranged in a state where it has been processed such as being divided.
  • a plurality of leg elastic members 72 arranged in an extended state on the peripheral edge of the leg opening LH are connected to the inner layer sheet 5 via the sixth adhesive 96. It is fixed between the outer layer sheet 6.
  • the outer layer sheet 6 and the inner layer sheet 5 constituting the exterior body 3 are bonded by a sixth adhesive 96.
  • the sixth adhesive 96 expands the outer package 3 of the diaper 1 to form the outer layer sheet 6 before forming the folded portion and the inner layer sheet before forming the folded portion.
  • each sixth adhesive 96 is disposed along the lateral direction Y, and each sixth adhesive 96 is disposed across the entire width of the diaper 1 in parallel to the lateral direction Y, and a plurality of sixth adhesives 96 are disposed.
  • the material 96 is applied in a stripe shape.
  • the elastic member examples include synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, stretchable polyolefin, A polyurethane etc. can be mentioned.
  • a thread-like (thread rubber etc.) having a cross section of a rectangle, a square, a circle, an ellipse, a polygon or the like, or a string-like (flat rubber etc.) can be preferably used.
  • FIG. 1 and FIG. A plurality of elastic members 71 arranged in a stretched state, and the outer layer sheet 6 and the inner layer sheet 5 are formed by a plurality of fused portions 8 that are intermittently disposed between adjacent elastic members 71, 71. It has a fused portion 8T fused to each other.
  • the waist stretchable part G1 and the waistline lower stretchable part G2 which are the fusion part 8T of the exterior body 3 are arranged in an extended state in the lateral direction (Y direction) between the inner layer sheet 5 and the outer layer sheet 6 and Due to the contraction of the plurality of elastic members 71 arranged intermittently in the longitudinal direction (X direction), the outer layer sheet 6 between the fusion part rows 8L and 8L adjacent in the lateral direction (Y direction) swells outward.
  • the skin side sheet 6E and the inner layer sheet 5 are deformed so as to swell inward to form a gathered portion.
  • the feeling of stuffiness during use of the diaper 1 can be improved by the space formed by deformation in this way.
  • the skin side sheet 6E which is the innermost sheet that forms the skin facing surface of the exterior body 3, is composed of a spunbond nonwoven fabric of 17 g / m 2 or less, and the skin side sheet 6E and the inner layer sheet 4 and 5, as shown in FIG. 4 and FIG. 5, there is an adhesive arrangement portion 91 ⁇ / b> T that is a portion bonded by a first adhesive 91 that forms a continuous line extending in the horizontal direction while being folded back in the vertical direction X. ing.
  • the skin side sheet 6E and the inner layer sheet 5 are fixed to each other by the first adhesive 91 forming a continuous line, as shown in FIGS. 3 and 7A.
  • a portion surrounded by the first adhesive 91 is a first non-joined portion 91N, and is not fixed to each other.
  • the skin side is caused by contraction of a plurality of elastic members 71 that are arranged in a stretched state in the lateral direction (Y direction) and intermittently arranged in the longitudinal direction (X direction).
  • the first non-joined portion 91N of the sheet 6E and the inner layer sheet 5 is easily swelled and deformed.
  • the skin side sheet 6E is swelled and deformed inward on the wearer side in this way, it is formed to fix the areas of the outer layer sheet 6 and the inner layer sheet 5 corresponding to the area where the skin side sheet 6E is arranged.
  • the diaper 1 mentioned above overlaps corresponding to the area
  • the outer layer sheet 6 and the inner layer sheet 5 are fixed to each other by a second adhesive 92 that forms a continuous line, and a portion surrounded by the second adhesive 92 is a second non-joined portion 92N. And are not fixed to each other.
  • the diaper 1 mentioned above as shown in FIG. 3, it is the skin opposing surface of the inner layer folding
  • the skin-side sheet 6E is fixed to each other by a plurality of fused portions 8 arranged in the form of dots. For this reason, it is difficult for the feeling of wear to deteriorate due to the displacement and position of the elastic members 71, and the elastic member 71, the outer layer sheet 6, and the skin side sheet 6E move independently, for example, contraction of the elastic member 71.
  • the diaper 1 described above has an inner layer sheet 5, an inner layer folded portion 5 ⁇ / b> E, and an outer layer sheet 6 as non-woven fabrics constituting the exterior body 3 in the ventral region A and the dorsal region B.
  • the skin side sheet 6E which is the folding
  • region B may differ.
  • the diaper 1 mentioned above WHEREIN: In the ventral
  • the diaper 1 described above has an inner layer sheet 5, an outer layer sheet 6, and a skin side sheet 6 ⁇ / b> E that is a folded portion of the outer layer sheet 6 as a nonwoven fabric constituting the outer package 3.
  • the skin side sheet 6 ⁇ / b> E may not be formed at the folded portion of the outer layer sheet 6. That is, as the nonwoven fabric constituting the exterior body 3, in addition to the inner layer sheet 5 and the outer layer sheet 6, the skin side sheet 6E made of separate hydrophobic fibers may be provided.
  • the exterior body 3 is a pants-type disposable diaper having a continuous shape such as an hourglass shape extending over the ventral region A, the crotch region C, and the dorsal region B.
  • the exterior body 3 may be a split-type pants-type disposable diaper that is divided as a separate member into a ventral-side exterior body, a back-side exterior body, and a crotch exterior body.
  • An absorbent body having a longitudinal direction extending in the region and a transverse direction perpendicular thereto, and including a liquid-retaining absorbent, and the absorbent body disposed on the non-skin facing surface side of the absorbent body.
  • the skin side sheet is arranged from the peripheral edge of the waist opening toward the crotch region,
  • the fusion part for fusing the outer layer sheet and the inner layer sheet is arranged at a position overlapping the region where the skin side sheet is arranged, In the position overlapping the region sandwiched between the end portion on the crotch region side of the skin side sheet and the end portion on the crotch region side of the pair of side seal portions, the outer layer sheet and the inner layer sheet are second It is bonded with an adhesive,
  • the said 2nd adhesive agent forms the continuous line extended in a horizontal direction, turning back in the vertical direction in the planar view when the state which expand
  • Pants-type disposable diaper is arranged from the peripheral edge of the waist opening toward the crotch region.
  • ⁇ 3> The outer layer sheet and the inner layer sheet are fixed to each other by the second adhesive forming a continuous line, and a portion surrounded by the second adhesive is a second non-joined portion,
  • the pants-type disposable diaper according to ⁇ 2> which is not fixed.
  • ⁇ 4> In a state where the outer layer sheet and the inner layer sheet before forming the folded portion are stretched, the continuous lines of the second adhesive adjacent in the vertical direction do not overlap with each other at the end in the vertical direction, The pants-type disposable diaper according to ⁇ 2> or ⁇ 3>.
  • ⁇ 5> The pants-type disposable diaper according to any one of ⁇ 2> to ⁇ 4>, wherein the basis weight of the second adhesive forming a spiral shape is larger than the basis weight of the first adhesive.
  • the width of the spiral formed by the continuous line of the second adhesive (the length in the direction perpendicular to the extending direction of the spiral by the continuous line) is 10 mm or more, preferably 14 mm or more, and 20 mm or less,
  • ⁇ 9> Due to the shrinkage of the elastic member, the outer layer sheet surrounded by the second adhesive forming the continuous line and the second non-joined portion of the inner layer sheet swell and deform, ⁇ 2> to ⁇ 8 > The pants-type disposable diaper according to any one of the above.
  • the inner layer sheet has an inner layer folded portion that is folded to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening in at least one of the ventral region and the back region.
  • the pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 11>, wherein a skin facing surface of the skin and the skin side sheet are fixed.
  • the inner layer sheet has an inner layer folded portion folded at the skin facing surface side of the inner layer sheet along a peripheral edge of the waist opening in at least one of the ventral region and the dorsal region.
  • the pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 12>, wherein a non-skin facing surface of the part and the inner layer sheet are fixed.
  • the skin-side sheet is an outer-layer folded portion in which the outer-layer sheet is folded back to the skin-facing surface side of the inner-layer sheet along the peripheral edge of the waist opening in at least one of the ventral region and the back-side region.
  • the pants-type disposable diaper according to any one of the above items ⁇ 1> to ⁇ 13>.
  • the skin side sheet has a dorsal skin side sheet disposed in the dorsal region and a ventral skin side sheet disposed in the ventral region,
  • the dorsal skin side sheet is arranged from the peripheral edge of the waist opening to a position covering the end on the dorsal region side of the absorber
  • the ventral skin side sheet is arranged from the peripheral edge of the waist opening to a position covering the ventral region end of the absorber.
  • the basis weight of the end on the back side region side of the absorber covered with the back side skin sheet is the vent side region of the absorber covered with the ventral skin side sheet.
  • the pants-type disposable diaper according to any one of the above items ⁇ 1> to ⁇ 14>, which is smaller than the basis weight of the side end.
  • the inner layer sheet has an inner layer folded portion that is folded to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening in at least one of the ventral region and the dorsal region,
  • the skin side sheet is formed of a spunbond nonwoven fabric,
  • the skin-side sheet has a breaking strength in a direction orthogonal to the orientation direction of the fibers constituting the skin-side sheet of 7.0 N / 50 mm or more, preferably 8.0 N / 50 mm or more, and 30.0 N
  • the pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 18>, which is / 50 mm or less.
  • the spunbonded nonwoven fabric used for the skin-side sheet has a plurality of heat-bonded portions that constitute the spunbonded nonwoven fabric by fixing its constituent fibers, and each of the plurality of heat-bonded portions has an area of 0.
  • the spunbonded nonwoven fabric used for the skin-side sheet has a total area ratio (embossing rate) of the plurality of heat-sealed portions occupying the surface area of one surface of 15% or less, preferably 5% to 13%,
  • the pants-type disposable diaper according to any one of the above items ⁇ 1> to ⁇ 20>, which is preferably 6% or more and 11% or less.
  • the skin side sheet and the inner layer sheet are fixed to each other by the first adhesive forming a continuous line in the adhesive arrangement portion, and surrounded by the first adhesive forming the continuous line.
  • the continuous lines of the first adhesive adjacent in the vertical direction do not overlap with each other at the end in the vertical direction, The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 22>.
  • the basis weight of the first adhesive forming a spiral shape is 2 g / m 2 or more, preferably 4 g / m 2 or more, and 10 g / m 2 or less, preferably 8 g / m 2 or less.
  • the width of the continuous line of the first adhesive forming the spiral shape (the length in the direction perpendicular to the direction in which the continuous line extends) is 10 mm or more, preferably 14 mm or more, and 20 mm or less, preferably The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 24>, which is 18 mm or less.
  • a continuous line of the fourth adhesive extending in the horizontal direction while being folded back in the vertical direction extends in the horizontal direction while forming a spiral shape at a position to be the inner layer folded portion in the inner layer sheet.
  • the underpants-type disposable diaper according to the above ⁇ 26> wherein a plurality of continuous lines of extended fourth adhesive are arranged in the vertical direction.
  • the inner layer folded portion and the inner layer sheet are fixed to each other by the fourth adhesive forming a continuous line in the adhesive placement portion, and the portion surrounded by the fourth adhesive is the fourth non-sticking portion.
  • the pants-type disposable diaper according to the above ⁇ 26> or ⁇ 27> which is a joined portion and is not fixed to each other.
  • a plurality of continuous lines of the fourth adhesive are arranged in the vertical direction, and the continuous lines of the fourth adhesive adjacent to each other in the vertical direction do not overlap with each other at the end in the vertical direction.
  • the pants-type disposable diaper according to any one of> to ⁇ 28>.
  • the inner layer sheet and the outer layer sheet are bonded to both side edges of the ventral region of the exterior body and both side edges of the back side region of the exterior body via a third adhesive for fixing an elastic member.
  • a pair of outer fixation regions A plurality of the elastic members are arranged between a pair of the outer fixing regions, and the elastic members are arranged between the inner layer sheet and the outer layer sheet in each of the pair of outer fixing regions.
  • Pants-type disposable diapers ⁇ 31> The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 30>, wherein in the crotch region, the outer layer sheet and the inner layer sheet constituting the exterior body are bonded with a sixth adhesive. ⁇ 32> A plurality of the sixth adhesives are disposed along the lateral direction, and the sixth adhesive is disposed over the entire width of the pants-type disposable diaper in parallel with the lateral direction.
  • the pants-type disposable diaper Due to the shrinkage of the elastic member, the first non-bonded portions of the skin side sheet and the inner layer sheet surrounded by the first adhesive forming the continuous line swell and deform, ⁇ 1> to ⁇
  • the pants-type disposable diaper according to any one of 32>.
  • the absorber has a lower layer absorber extending from the ventral region through the crotch region to the dorsal region, and an upper layer absorber extending only from the ventral region to the crotch region, The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 33>.
  • the upper layer absorbent body is disposed only from the ventral region to the crotch region, and the high basis weight portion is formed at a position displaced to the ventral region side.
  • the basis weight of the absorbent core constituting the lower layer absorbent is 100 g / m 2 or more and 1000 g / m 2 or less, and the basis weight of the core wrap sheet constituting the lower layer absorbent is 3 g / m 2 or more and 20 g / m 2.
  • the basis weight of the absorbent core constituting the upper layer absorbent is 50 g / m 2 or more and 500 g / m 2 or less, and the basis weight of the core wrap sheet constituting the upper layer absorbent is 3 g / m 2 or more and 20 g / m 2.
  • the pants-type disposable diaper according to any one of ⁇ 34> to ⁇ 36>, which is m 2 or less.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2017/037430 2016-12-15 2017-10-16 パンツ型使い捨ておむつ WO2018110070A1 (ja)

Priority Applications (2)

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RU2019121663U RU196610U1 (ru) 2016-12-15 2017-10-16 Одноразовый подгузник типа трусов
CN201790001491.9U CN210644353U (zh) 2016-12-15 2017-10-16 短裤型一次性尿布

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JP2016243181A JP2018094217A (ja) 2016-12-15 2016-12-15 パンツ型使い捨ておむつ

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CN113855395A (zh) * 2020-06-30 2021-12-31 尤妮佳股份有限公司 内裤型卫生巾

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JP7377705B2 (ja) * 2019-12-26 2023-11-10 花王株式会社 パンツ型吸収性物品
WO2022054832A1 (ja) * 2020-09-08 2022-03-17 花王株式会社 パンツ型吸収性物品
CN114469531A (zh) * 2022-01-28 2022-05-13 鹤山市嘉美诗保健用品有限公司 一种用于拉拉裤上的封边结构及使用其的拉拉裤
JP7346666B1 (ja) * 2022-06-20 2023-09-19 ユニ・チャーム株式会社 パンツ型吸収性物品
JP7326545B1 (ja) * 2022-06-20 2023-08-15 ユニ・チャーム株式会社 パンツ型吸収性物品

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