WO2018110070A1 - Pants-type disposable diaper - Google Patents
Pants-type disposable diaper Download PDFInfo
- 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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- sheet
- layer sheet
- inner layer
- region
- pants
- Prior art date
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Classifications
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- 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 articles specially adapted to be worn around the waist, e.g. diapers
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- 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 articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
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- 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
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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Abstract
This pants-type disposable diaper (1) is provided with elastic members (71) disposed in an extended state in a horizontal direction (Y) between an outer sheet (6) and an inner sheet (5). The outer sheet (6) and the inner sheet (5) are fused to each other by means of fusion parts (8) which are intermittently disposed between the elastic members (71) neighboring each other. The inner sheet (5) and a skin-side sheet (6E) disposed on the skin-facing side of the inner sheet (5) have a portion (91T) adhered with a first adhesive (91). The first adhesive (91) forms a continuous line extending in the horizontal direction (Y) while being folded in a vertical direction (X).
Description
本発明は、パンツ型使い捨ておむつに関する。
The present invention relates to a pants-type disposable diaper.
使い捨ておむつには、吸収体を備えた縦長の吸収性本体の外側に外装体が配されている所謂パンツ型の使い捨ておむつがある。本出願人は、先に、このようなパンツ型の使い捨ておむつの外装体の外表面に、所定の物性値を満たすスパンボンド不織布を用いる技術を提案した(例えば、特許文献1)。
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).
本発明は、着用者の腹側に配される腹側領域及び背側に配される背側領域とそれらの間に位置する股下領域とを有すると共に、該腹側領域から該股下領域を介して該背側領域に延びる縦方向とこれに直交する横方向とを有し、且つ液保持性の吸収体を含む吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体とを備え、前記腹側領域及び前記背側領域それぞれにおける該外装体の縦方向に沿う両側縁部どうしが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型使い捨ておむつである。前記外装体は、前記パンツ型使い捨ておむつの非肌対向面を形成する外層シートと、該外層シートの肌対向面側に配される内層シートと、前記腹側領域及び前記背側領域の少なくとも一方において該内層シートの肌対向面側に配される肌側シートと、該外層シート及び該内層シートの間に横方向に伸長状態で配された複数本の弾性部材とを具備している。前記外層シート及び前記内層シートは、隣り合う前記弾性部材の間に間欠的に配置された複数の融着部により互いに融着された部分を有している。前記肌側シートは、坪量17g/m2以下のスパンボンド不織布である。前記肌側シート及び前記内層シートは、第1接着剤により接着された部分を有している。前記第1接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している。
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. And 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 The skin layer side sheet | seat distribute | arranged to the skin opposing surface side of this inner layer sheet | seat, and the several elastic member distribute | arranged by extending in the horizontal direction between this outer layer sheet | seat and this inner layer sheet | seat. 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.
特許文献1に記載のパンツ型使い捨ておむつによれば、肌触りが良くなり、製品の品質が向上する。しかし、肌触りを更に向上させ、製品の品質を更に向上させたいとのニーズがあった。
According to the pants-type disposable diaper described in Patent Document 1, the touch is improved and the quality of the product is improved. However, there was a need to further improve the touch and further improve the product quality.
したがって本発明は、前述した従来技術が有する欠点を解消し得る使い捨ておむつを提供することにある。
Therefore, it is an object of the present invention to provide a disposable diaper that can eliminate the drawbacks of the above-described conventional technology.
以下、本発明をその好ましい実施形態に基づき図面を参照しながら説明する。
本発明の使い捨ておむつは、着用者の腹側に配される腹側領域A及び背側に配される背側領域Bとそれらの間に位置する股下領域Cとを有すると共に、腹側領域Aから股下領域Cを介して背側領域Bに延びる縦方向Xと、縦方向Xに直交する横方向Yとを有している。ここで、腹側領域Aとは使い捨ておむつの着用時に着用者の腹側に配される領域であり、背側領域Bとは使い捨ておむつの着用時に着用者の背側に配される領域である。 Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
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. Here, the abdominal region A is a region disposed on the wearer's abdomen when wearing the disposable diaper, and the back region B is a region disposed on the wearer's back when wearing the disposable diaper. .
本発明の使い捨ておむつは、着用者の腹側に配される腹側領域A及び背側に配される背側領域Bとそれらの間に位置する股下領域Cとを有すると共に、腹側領域Aから股下領域Cを介して背側領域Bに延びる縦方向Xと、縦方向Xに直交する横方向Yとを有している。ここで、腹側領域Aとは使い捨ておむつの着用時に着用者の腹側に配される領域であり、背側領域Bとは使い捨ておむつの着用時に着用者の背側に配される領域である。 Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
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. Here, the abdominal region A is a region disposed on the wearer's abdomen when wearing the disposable diaper, and the back region B is a region disposed on the wearer's back when wearing the disposable diaper. .
図1及び図2には、本発明のパンツ型使い捨ておむつの一実施形態である使い捨ておむつ1(以下、「おむつ1」ともいう。)が示されている。おむつ1は、図1及び図2に示すとおり、液保持性の吸収体23を含む吸収性本体2と、吸収性本体2の非肌対向面側に配されて該吸収性本体2を固定している外装体3とを備えている。おむつ1は、外装体3の腹側領域Aの縦方向Xに沿う両側縁部(左右両側縁部)3a1,3a1と外装体3の背側領域Bの縦方向Xに沿う両側縁部(左右両側縁部)3b1,3b1とが接合されて一対のサイドシール部S,S、ウエスト開口部WH及び一対のレッグ開口部LH,LHが形成されている使い捨ておむつである。好適に、おむつ1の外装体3は、図2に示すように、おむつ1を展開し且つ伸長させた状態を平面視して、着用時に着用者の腹側に配される腹側領域A、着用時に着用者の背側に配される背側領域B、及び腹側領域Aと背側領域Bとの間の股下領域Cに区分されている。
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. As shown in FIGS. 1 and 2, 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. Preferably, 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.
上述したおむつ1を展開し且つ伸長させた状態とは、図2に示すように、サイドシール部Sを引き剥がして、おむつ1を展開状態とし、その展開状態のおむつ1を、各部の弾性部材を伸長させて、設計寸法(弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ)となるまで広げた状態を意味する。
As shown in FIG. 2, 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).
本明細書において、「肌対向面」とは、おむつ1又はその構成部材における、着用時に着用者の肌側に向けられる面であり、「非肌対向面」とは、おむつ1又はその構成部材における、着用時に着用者の肌側とは反対側(着衣側)に向けられる面である。おむつ1において、縦方向(X方向)とは、平面に展開させかつ伸長させた状態で、腹側領域Aから背側領域Bにわたる方向のことである。また、横方向(Y方向)とは、縦方向(X方向)と直交する方向であり、平面に展開させかつ伸長させた状態のおむつ1の幅方向のことである。
また、おむつ1は、図2に示す、縦方向(X方向)に延びる縦中心線CL1に対して左右対称形となっている。尚、図2中のCL2は、おむつ1を縦方向(X方向)に二分する横方向(Y方向)に延びる横中心線であり、縦中心線CL1に直交している。 In the present specification, the “skin facing surface” is a surface of thediaper 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. In the diaper 1, 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. Moreover, 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.
Moreover, thediaper 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.
また、おむつ1は、図2に示す、縦方向(X方向)に延びる縦中心線CL1に対して左右対称形となっている。尚、図2中のCL2は、おむつ1を縦方向(X方向)に二分する横方向(Y方向)に延びる横中心線であり、縦中心線CL1に直交している。 In the present specification, the “skin facing surface” is a surface of the
Moreover, the
おむつ1では、吸収性本体2は、図2に示すとおり、おむつ1を展開し且つ伸長させた状態において、縦方向(X方向)が相対的に長い縦長の形状を有している。吸収性本体2は、肌対向面を形成する液透過性の表面シート21と、非肌対向面を形成する液難透過性(撥水性も含む)の裏面シート22と、これら両シート21,22間に介在配置された液保持性の吸収体23とを具備する。おむつ1では、吸収性本体2の縦方向(X方向)の全長は吸収体23のそれと同じであり、吸収体23の前後端部23A,23Bの外端縁23A1,23B1の位置は、図2に示すように、吸収性本体2の前後端部の外端縁の位置と同位置にある。また、吸収性本体2の縦方向(X方向)に沿う両側部には、図2に示すように、縦方向(X方向)に伸長状態で配された弾性部材25を有する防漏カフ24,24が設けられている。具体的には、防漏カフ24は、液不透過性又は撥水性で且つ通気性の素材から構成されており、各防漏カフ24の自由端部近傍には、防漏カフ形成用弾性部材25が縦方向(X方向)に伸長した状態で配されている。おむつの着用時には、防漏カフ形成用弾性部材25の収縮により防漏カフ24の自由端部側が起立して、横方向(Y方向)への体液の流出が阻止される。
In the diaper 1, as shown in FIG. 2, 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. In the diaper 1, 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. As shown in FIG. 3, the outer end edge of the absorbent main body 2 is in the same position as the outer edge. Further, on both sides along the longitudinal direction (X direction) of the absorbent main body 2, as shown in FIG. 2, a leak-proof cuff 24 having an elastic member 25 arranged in an elongated state in the longitudinal direction (X direction), 24 is provided. Specifically, 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). When the diaper is worn, 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.
おむつ1では、吸収体23は、図2に示すように、腹側領域Aから股下領域Cを通って背側領域Bにまで亘る下層吸収体231と、腹側領域Aから股下領域Cにのみ亘る上層吸収体232とを有し、上層吸収体232と下層吸収体231とが重なる坪量の高い高坪量部23Kと、高坪量部23Kの周りの周辺吸収領域23Sとに区分される。下層吸収体231は、おむつ1の縦方向Xの全長に亘って縦方向Xに長い矩形状に形成されており、吸収性本体2を平面視した際の輪郭形状に一致している。また、上層吸収体232は、その縦方向Xの長さが、下層吸収体231の縦方向Xの長さよりも短く、その横方向Yの長さが、下層吸収体231の横方向Yの長さよりも短く、縦方向Xに長い矩形状に形成されている。高坪量部23Kは、上層吸収体232及び下層吸収体231の2層構成の領域であり、周辺吸収領域23Sは、下層吸収体231のみの単層構成の領域である。高坪量部23Kは、その坪量が、周辺吸収領域23Sの坪量よりも大きくなっている。また、高坪量部23Kは、その厚みが、周辺吸収領域23Sの厚みよりも大きくなっている。このように、おむつ1では、上層吸収体232が、腹側領域Aから股下領域Cにのみ亘って配されており、高坪量部23Kが、腹側領域A側に変位した位置に形成されている。
In the diaper 1, as shown in FIG. 2, 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. In addition, 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, and 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, and 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. Further, the thickness of the high basis weight portion 23K is larger than the thickness of the peripheral absorption region 23S. Thus, in the diaper 1, 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.
おむつ1では、下層吸収体231を構成する吸収性コアの坪量は、100g/m2以上1000g/m2以下であることが好ましい。下層吸収体231を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下であることが好ましい。
また、おむつ1では、上層吸収体232を構成する吸収性コアの坪量は、50g/m2以上500g/m2以下であることが好ましい。上層吸収体232を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下であることが好ましい。 In thediaper 1, 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.
Furthermore, thediaper 1, 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.
また、おむつ1では、上層吸収体232を構成する吸収性コアの坪量は、50g/m2以上500g/m2以下であることが好ましい。上層吸収体232を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下であることが好ましい。 In the
Furthermore, the
以上のように構成された吸収性本体2は、図2に示すように、その縦方向(X方向)を、展開かつ伸長状態におけるおむつ1の縦方向(X方向)に一致させて、外装体3の中央部に、本体固定用接着剤によって接合されている。このように、外装体3は、使い捨ておむつ1の厚み方向における、吸収性本体2を構成する裏面シート22の非肌対向面側に配されて接着固定されている。従って、おむつ1では、吸収性本体2を構成する吸収体23が、腹側領域Aと背側領域Bとに亘って配されている。
As shown in FIG. 2, 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.
外装体3は、おむつ1では、図2及び図3に示すように、着用時においておむつ1の外面即ち非肌対向面を形成する外層シート6と、外層シート6の肌対向面側に配される内層シート5と、腹側領域A及び背側領域Bにおいて内層シート5の肌対向面側に配される肌側シート6Eと、外層シート6及び内層シート5の間に横方向Yに伸長状態で配された複数本の弾性部材71とを具備している。好適に、おむつ1では、外装体3は、おむつ1の非肌対向面を形成する外層シート6と、外層シート6の肌対向面側の内層シート5と、内層シート5の肌対向面側の肌側シート6Eとを具備し、更に、内層シート5が、背側領域Bにおいて、ウエスト開口部WHの周縁部に沿って内層シート5の肌対向面側に折り返された背側領域B側の内層折り返し部分5Eと、腹側領域Aにおいて、ウエスト開口部WHの周縁部に沿って内層シート5の肌対向面側に折り返された腹側領域A側の内層折り返し部分5Eとを有している。そして、外装体3は、外層シート6及び内層シート5の間に、横方向Yに伸長状態で配された弾性部材71を複数具備しており、弾性部材71が、縦方向Xに間隔を空けて配されている。
As shown in FIGS. 2 and 3, 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. Preferably, in the diaper 1, 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. Skin side sheet 6E, and further, inner layer sheet 5 in back side region B is folded back on the skin facing surface side of inner layer sheet 5 along the peripheral edge of waist opening WH. In the ventral region A, the inner layer folded portion 5E has an inner layer folded portion 5E on the ventral region A side that is folded back to the skin facing surface side of the inner layer sheet 5 along the peripheral edge of the waist opening WH. . 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.
おむつ1では、内層シート5は、図2及び図3に示すように、背側領域Bにおいて、おむつ1の背側領域Bにおける縦方向Xの外端部1B、言い換えれば、ウエスト開口部WHの周縁部にて、おむつ1の内面側に折り返されており、その折り返しにより形成された内層折り返し部分5Eを有している(図4参照)。そして、内層シート5は、腹側領域Aにおいて、おむつ1の腹側領域Aにおける縦方向Xの外端部1A、言い換えれば、ウエスト開口部WHの周縁部にて、おむつ1の内面側に折り返されており、その折り返しにより形成された内層折り返し部分5Eを有している。このように、おむつ1の内層シート5は、背側領域B側の内層折り返し部分5E、及び腹側領域A側の内層折り返し部分5Eを有している。内層折り返し部分5Eは、おむつ1では、ウエスト開口部WHの周縁部から股下領域Cに向かって、吸収性本体2の縦方向Xの端部に至らない位置まで延在している。おむつ1では、内層折り返し部分5Eが、内層シート5の肌対向面に当接するように重なっている。
In the diaper 1, as shown in FIG.2 and FIG.3, the inner-layer sheet | seat 5 is the outer end part 1B of the vertical direction X in the back side area | region B of the diaper 1, in other words, the waist opening part WH, as shown in FIG. 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). And 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. Thus, 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. In the diaper 1, 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. In the diaper 1, the inner layer folded portion 5 </ b> E overlaps with the skin facing surface of the inner layer sheet 5.
内層折り返し部分5Eを有する内層シート5は、おむつ1では、疎水性の繊維からなる疎水性不織布で形成されている。疎水性不織布としては、スパンボンド不織布が好ましい。内層シート5を形成するスパンボンド不織布は、その坪量が、剛性を低くする観点から、15g/m2以上19g/m2以下であることが好ましい。
In the diaper 1, the inner layer sheet 5 having the inner layer folded portion 5E is formed of a hydrophobic nonwoven fabric made of hydrophobic fibers. As the 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.
また、おむつ1では、肌側シート6Eは、図2及び図3に示すように、背側領域Bに配された背側肌側シート6EBと腹側領域Aに配された腹側肌側シート6EAとを有している。好適には、外層シート6は、背側領域Bにおいて、内層シート5の縦方向Xの背側領域B側の外端部5B、言い換えれば、ウエスト開口部WHの周縁部にて、内層折り返し部分5Eの肌対向面側(おむつ1の内面側)に折り返されており、その折り返しにより形成された背側肌側シート6EBを有している(図4参照)。また、外層シート6は、腹側領域Aにおいて、内層シート5の縦方向Xの腹側領域A側の外端部5A、言い換えれば、ウエスト開口部WHの周縁部にて、内層折り返し部分5Eの肌対向面側(おむつ1の内面側)に折り返されており、その折り返しにより形成された腹側肌側シート6EAを有している。
Moreover, in the diaper 1, as shown in FIG.2 and FIG.3, the skin side sheet | seat 6E is the back side skin side sheet | seat 6EB distribute | arranged to the back side area | region B, and the ventral side skin side sheet | seat 6EA distribute | arranged to the abdominal side area | region A. And have. Preferably, 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). Further, in the ventral region A, 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.
おむつ1では、肌側シート6Eは、図3及び図4に示すように、背側領域B及び腹側領域Aにおいて、ウエスト開口部WHの周縁部に沿って外層シート6が内層シート5の肌対向面側に折り返された外層折り返し部分で形成されている。おむつ1の肌側シート6Eは、背側領域B側の折り返しにより形成された背側肌側シート6EB、及び腹側領域A側の折り返しにより形成された腹側肌側シート6EAを有している。このように、肌側シート6Eが、外層シート6の外層折り返し部分で形成されているので、内層シート5の縦方向Xの端部が露出しない袋状構造となり、内層シート5の該端部が着用者の肌に触れることを防止でき、肌に刺激を与え難くなっている。
In the diaper 1, as shown in FIGS. 3 and 4, 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. . Thus, since 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.
おむつ1では、図3及び図4に示すように、背側肌側シート6EBは、ウエスト開口部WHの周縁部から吸収体23の背側領域B側の端部23Bを覆う位置まで配されている。また、腹側肌側シート6EAは、ウエスト開口部WHの周縁部から吸収体23の腹側領域A側の端部23Aを覆う位置まで配されている。好適に、背側肌側シート6EB及び腹側肌側シート6EAを有する肌側シート6Eは、ウエスト開口部WHの周縁部から股下領域Cに向かって配されており、おむつ1では、ウエスト開口部WHの周縁部から股下領域Cに向かって、内層折り返し部分5Eの全域を越え、吸収体23の縦方向Xの前後端部23A,23Bを覆う位置まで延在している。
In the diaper 1, as shown in FIG.3 and FIG.4, back side skin side sheet | seat 6EB is distribute | arranged from the peripheral part of waist opening part WH to the position which covers the edge part 23B by the side of the back side area | region B of the absorber 23. Yes. Further, 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. Preferably, 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. In the diaper 1, 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.
おむつ1では、図3及び図4に示すように、肌側シート6Eは、縦方向Xにおいて、内層折り返し部分5Eよりも長く形成されている。このように配された肌側シート6Eによって、吸収性本体2を構成する吸収体23の縦方向Xの前後端部23A,23Bが被覆されている。その為、肌側シート6Eによって、吸収性本体2を構成する吸収体23の前後端部23A,23Bが着用者の肌に触れることを防止でき、肌に刺激を与え難くなっている。特におむつ1では、吸収体23の高坪量部23Kが、腹側領域A側に変位した位置に形成されているので、吸収体23は、背側肌側シート6EBで覆われた吸収体23の背側領域B側の端部23Bの坪量が、腹側肌側シート6EAで覆われた吸収体23の腹側領域A側の端部23Aの坪量よりも小さい。その為、おむつ1の着用時に、着用者の臀部を覆うために屈曲の変動が大きい背側領域B側において、肌への刺激を与え難くなっている。
In the diaper 1, as shown in FIG.3 and FIG.4, the skin side sheet | seat 6E is formed in the vertical direction X longer than the inner-layer folding | returning part 5E. 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. In particular, in the diaper 1, 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.
背側肌側シート6EB及び腹側肌側シート6EAを有する肌側シート6Eは、スパンボンド不織布で形成されており、その坪量が、剛性を低くする観点から、17g/m2以下であり、15g/m2以下であることが好ましい。尚、スパンボンド不織布の坪量の下限値としては、10g/m2以上であることが好ましい。
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.
上述のように、おむつ1では、肌側シート6Eは、外層シート6の外層折り返し部分で形成されており、肌側シート6Eを含む外層シート6が、前記スパンボンド不織布で形成されている。用いるスパンボンド不織布としては、柔軟な不織布となる観点から、ポリオレフィン系重合体であるプロピレン系重合体から形成されていることが好ましい。プロピレン系重合体としては、分子量分布(Mn/Mn)が1.5以上3.5以下のプロピレン系重合体であることが好ましい。また、プロピレン系重合体としては、滑らかで柔軟な不織布となる観点から、ランダムコポリマー、ホモポリマー、ブロックコポリマーのいずれか1種以上を5~100重量%、より好ましくは25重量%~80重量%含んだ樹脂からなるものであることが好ましい。また、これらのコポリマーやホモポリマーを混合してもよいし、他の樹脂を混合してもよく、ポリプロピレンのホモポリマーとランダムコポリマーの混合物であってもよい。さらにはプロピレン成分をベースとしたランダムコポリマーとして、エチレンやα-オレフィンと共重合したものが好ましく、エチレンプロピレンランダム共重合体が特に好ましい。プロピレン系重合体としては、同様な観点から、エチレンプロピレンランダム共重合体を主成分として5~100重量%含んだ重合体であることが好ましく、25重量%以上含んだ重合体であることが更に好ましい。エチレンプロピレンランダム共重合体中には、エチレン含有量が2.0mol%以上10.0mol%以下であることが好ましく、エチレン含有量が3.0mol%以上8.0mol%以下であること更に好ましい。また、プロピレン重合体としては、環境の観点から、再生ポリプロピレン樹脂を25重量%以上含んだ重合体であることが好ましく、50重量%以上含んだ重合体であることが更に好ましい。
As described above, in the diaper 1, 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. Further, as 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 α-olefin is preferable, and an ethylene-propylene random copolymer is particularly preferable. From the same viewpoint, 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. In the ethylene-propylene random copolymer, 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. Further, 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.
肌側シート6Eを含む外層シート6に用いるスパンボンド不織布は、柔軟性の観点から、捲縮長繊維の含有率が、30質量%以上であることが好ましく、40質量%以上であることが更に好ましく、形態安定性の観点から、100質量%以下であることが好ましく、90質量%以下であることが更に好ましく、具体的には、柔軟性と形態安定性との両立の観点から、30質量%以上100質量%以下であることが好ましく、40質量%以上90質量%以下であることが更に好ましい。
From the viewpoint of flexibility, 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. Preferably, from the viewpoint of form stability, 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.
ここで捲縮長繊維とは、例えば、熱可塑性樹脂を溶融紡糸した後、該溶融紡糸された糸状体を左右あるいは前後から異なる温度の冷却風を当てて冷却したり、若しくは片方から冷却風を当てて冷却したり、又は、異型断面繊維あるいは偏芯中空繊維として溶融紡糸された糸状体や、融点の異なる重合体を用いて複合溶融紡糸された糸状体を冷却したりして形成された捲縮する繊維を示す。捲縮長繊維は、通常捲縮数を好ましくは10個/25mm以上、更に好ましくは15個/25mm以上、特に好ましくは20個/25mm以上有する顕在捲縮長繊維である。該顕在捲縮長繊維は、通常、繊維径が0.5d以上5.0d以下の範囲にあることが好ましく、0.5d以上3.0d以下の範囲にあることが更に好ましい。尚、捲縮長繊維の捲縮数は、以下の測定法により測定する。
Here, 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.捲 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. In general, 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. In addition, the number of crimps of the crimped long fiber is measured by the following measuring method.
〔捲縮長繊維の捲縮数(個/25mm)の測定法〕
表面が滑らかで光沢のある紙片に空間距離25mmの区分線を引く。次いで、エンボスロールにより加熱加圧処理される前の長繊維ウエブから、捲縮性が損なわれないように慎重に採取した捲縮長繊維を1本ずつ、空間距離に対して25±5%の緩みをもたせて、両端を前記紙片に接着剤で貼り付け固着させる。この試料を1本ずつ、捲縮試験機のつかみに取り付け、紙片を切断した後、試料に初荷重(0.18mN×表示テックス数)をかけたときの、つかみ間の距離(空間距離)(mm)を測定する。そして、その時の捲縮数を数え、25mm間当たりの捲縮数を求める。捲縮数は、山と谷を全部数え、その数の半分の値を捲縮数とする。捲縮数は不織布の中から捲縮長繊維のみを取り出して20本を測定し、その平均値を小数点1けたまで求めたものを捲縮数とする。なお、捲縮数の測定は、JIS Z8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内で実施する。 [Measurement method of crimped number of crimped long fibers (pieces / 25 mm)]
A dividing line with a spatial distance of 25 mm is drawn on a piece of paper having a smooth surface and gloss. Next, each of the crimped long fibers carefully collected from the long fiber web before being heated and pressurized by the embossing roll so as not to impair the crimpability is 25 ± 5% of the spatial distance. Applying looseness, both ends are pasted and fixed to the piece of paper with an adhesive. One sample at a time, attached to the grip of the crimping tester, cut the piece of paper, and then the distance between the grips when the initial load (0.18 mN x number of tex) is applied to the sample (spatial distance) ( mm). Then, the number of crimps at that time is counted, and the number of crimps per 25 mm is obtained. The number of crimps counts all the peaks and valleys, and the half of the number is the crimp number. As for the number of crimps, only the crimped long fibers are taken out of the nonwoven fabric, 20 are measured, and the average value obtained up to one decimal point is defined as the number of crimps. Note that the number of crimps is measured in a temperature-controlled room at a temperature of 20 ± 2 ° C. and a humidity of 65 ± 2% as defined in JIS Z8703 (standard state of the test site).
表面が滑らかで光沢のある紙片に空間距離25mmの区分線を引く。次いで、エンボスロールにより加熱加圧処理される前の長繊維ウエブから、捲縮性が損なわれないように慎重に採取した捲縮長繊維を1本ずつ、空間距離に対して25±5%の緩みをもたせて、両端を前記紙片に接着剤で貼り付け固着させる。この試料を1本ずつ、捲縮試験機のつかみに取り付け、紙片を切断した後、試料に初荷重(0.18mN×表示テックス数)をかけたときの、つかみ間の距離(空間距離)(mm)を測定する。そして、その時の捲縮数を数え、25mm間当たりの捲縮数を求める。捲縮数は、山と谷を全部数え、その数の半分の値を捲縮数とする。捲縮数は不織布の中から捲縮長繊維のみを取り出して20本を測定し、その平均値を小数点1けたまで求めたものを捲縮数とする。なお、捲縮数の測定は、JIS Z8703(試験場所の標準状態)に規定する温度20±2℃、湿度65±2%の恒温室内で実施する。 [Measurement method of crimped number of crimped long fibers (pieces / 25 mm)]
A dividing line with a spatial distance of 25 mm is drawn on a piece of paper having a smooth surface and gloss. Next, each of the crimped long fibers carefully collected from the long fiber web before being heated and pressurized by the embossing roll so as not to impair the crimpability is 25 ± 5% of the spatial distance. Applying looseness, both ends are pasted and fixed to the piece of paper with an adhesive. One sample at a time, attached to the grip of the crimping tester, cut the piece of paper, and then the distance between the grips when the initial load (0.18 mN x number of tex) is applied to the sample (spatial distance) ( mm). Then, the number of crimps at that time is counted, and the number of crimps per 25 mm is obtained. The number of crimps counts all the peaks and valleys, and the half of the number is the crimp number. As for the number of crimps, only the crimped long fibers are taken out of the nonwoven fabric, 20 are measured, and the average value obtained up to one decimal point is defined as the number of crimps. Note that the number of crimps is measured in a temperature-controlled room at a temperature of 20 ± 2 ° C. and a humidity of 65 ± 2% as defined in JIS Z8703 (standard state of the test site).
肌側シート6Eを含む外層シート6に用いるスパンボンド不織布は、使用時の破れの防止及び加工適性の観点から、構成する繊維の配向方向に直交する方向の破断強度が、7.0N/50mm以上であることが好ましく、8.0N/50mm以上であることが好ましく、そして、30.0N/50mm以下であることが好ましく、具体的には、7.0N/50mm以上30.0N/50mm以下であることが好ましく、8.0N/50mm以上30.0N/50mm以下であることが更に好ましい。破断強度は、以下の測定法により測定する。
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.
〔破断強度の測定法〕
22℃65%RH環境下にて、外層シート6を構成繊維の配向方向に沿うCD方向に50mm、CD方向に直交するMD方向に200mmの長方形状に測定片を切り出す。この切り出された測定片を測定サンプルとする。この測定サンプルを、MD方向が引張方向となるように、引張試験機(例えば、オリエンテック社製テンシロン引張り試験機「RTA-100」)のチャックに取り付ける。尚、チャック間は150mmとする。そして、測定サンプルを300mm/分の速度で引っ張り、測定サンプルの破断に至るまでの最大荷重点を、構成する繊維の配向方向に直交する方向(MD方向)の破断強度とする。 [Measurement method of breaking strength]
Under an environment of 22 ° C. and 65% RH, theouter 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. Then, 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.
22℃65%RH環境下にて、外層シート6を構成繊維の配向方向に沿うCD方向に50mm、CD方向に直交するMD方向に200mmの長方形状に測定片を切り出す。この切り出された測定片を測定サンプルとする。この測定サンプルを、MD方向が引張方向となるように、引張試験機(例えば、オリエンテック社製テンシロン引張り試験機「RTA-100」)のチャックに取り付ける。尚、チャック間は150mmとする。そして、測定サンプルを300mm/分の速度で引っ張り、測定サンプルの破断に至るまでの最大荷重点を、構成する繊維の配向方向に直交する方向(MD方向)の破断強度とする。 [Measurement method of breaking strength]
Under an environment of 22 ° C. and 65% RH, the
肌側シート6Eを含む外層シート6に用いるスパンボンド不織布は、その構成繊維を固着してスパンボンド不織布を構成する複数の熱融着部を有している。複数の熱融着部は、柔軟で肌触り良い不織布となる観点から、個々の面積が、0.3mm2以下であることが好ましく、0.1mm2以上0.25mm2以下であることが更に好ましく、0.1mm2以上0.2mm2以下であることが特に好ましい。熱融着部の数は、10個/cm2以上250個/cm2以下であることが好ましく、35個/cm2以上65個/cm2以下であることが更に好ましい。
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. From the viewpoint of forming a flexible and soft non-woven fabric, 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.
また、肌側シート6Eを含む外層シート6に用いるスパンボンド不織布は、その一面の表面積に占める前記複数の熱融着部の合計面積の割合(エンボス率)が、柔軟で肌触り良い不織布となる観点から、15%以下であることが好ましく、5%以上13%以下であることが更に好ましく、6%以上11%以下であることが特に好ましい。
In addition, 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.
肌側シート6Eを含む外層シート6に用いるスパンボンド不織布を構成する前記熱融着部は、エンボス(エンボス凸ロールとフラットロールなどによる)による熱圧着により間欠的に形成されたものや、超音波融着によるもの、間欠的に熱風を加えて部分融着させたものなどが挙げられる。これらの中で熱圧着によるものが繊維を破断させやすい点で好ましい。前記熱融着部の形状は、特に制限されず、例えば、円形、菱形、三角形等の任意の形状であってもよい。
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.
上述のように、おむつ1では、外装体3は、図3に示すように、背側領域B及び腹側領域Aにおいて、おむつ1の外面側からおむつ1の内面側に向かって、外層シート6、内層シート5、内層折り返し部分5E、外層シート6の折り返し部分である肌側シート6Eの順に有している。おむつ1では、内層折り返し部分5E及び肌側シート6Eを除く外層シート6及び内層シート5は、縦方向(X方向)中央部において縦中心線CL1に向かって内方に括れており、互いに同形同大に形成されている。内層折り返し部分5Eは、背側領域B及び腹側領域Aにおいて、横方向(Y方向)に長い矩形状に形成されている。肌側シート6Eは、腹側領域A及び背側領域Bそれぞれにおいて、横方向(Y方向)に長い矩形状に形成されている。肌側シート6E、内層折り返し部分5E、内層シート5及び外層シート6は、それぞれ、別体のシートであってもよいが、おむつ1では、肌側シート6Eが、外層シート6の折り返し部分によって形成されている。内層折り返し部分5Eが、内層シート5の折り返し部分によって形成されている。
As described above, in the diaper 1, 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. In the diaper 1, 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. In the diaper 1, the skin side sheet 6E is formed by the folded portion of the outer layer sheet 6. Has been. The inner layer folded portion 5E is formed by the folded portion of the inner layer sheet 5.
また、おむつ1では、外装体3は、図2~図4に示すように、外層シート6と内層シート5との間に、横方向Yに伸長した状態で、縦方向(X方向)に間欠的に配された複数の糸状又は帯状の弾性部材71を有している。おむつ1では、横方向Yに伸長した状態の弾性部材71が、ウエスト開口部WHの周縁部の周縁に位置する一対のサイドシール部S,Sの上端と、一対のサイドシール部S,Sの下端との間に間隔を空けて複数配されている。おむつ1では、複数の弾性部材71を備えることにより、ウエスト伸縮部G1及び胴回り下部伸縮部G2を有する伸縮領域を形成している。また、おむつ1では、内層シート5と外層シート6との間に、図2に示すように、伸長した状態の複数の糸状又は帯状のレッグ弾性部材72を有している。おむつ1では、複数のレッグ弾性部材72を備えることにより、レッグ伸縮部G3を形成している。レッグ伸縮部G3は、図2に示すように、レッグ開口部LHの周縁部に形成されている。
Further, in the diaper 1, the outer package 3 is intermittently extended in the vertical direction (X direction) while being extended in the horizontal direction Y between the outer layer sheet 6 and the inner layer sheet 5, as shown in FIGS. A plurality of thread-like or belt-like elastic members 71 are provided. In the diaper 1, the elastic member 71 in a state of extending in the lateral direction Y includes the upper ends of the pair of side seal portions S and S located at the periphery of the peripheral portion of the waist opening WH and the pair of side seal portions S and S. A plurality are arranged with a space between the lower end. In the diaper 1, by providing a plurality of elastic members 71, an elastic region having a waist elastic part G1 and a waistline lower elastic part G2 is formed. Moreover, in the diaper 1, between the inner layer sheet | seat 5 and the outer layer sheet | seat 6, as shown in FIG. 2, it has several thread-like or strip | belt-shaped leg elastic members 72 of the expanded state. In the diaper 1, the leg stretchable part G <b> 3 is formed by including a plurality of leg elastic members 72. The leg expansion / contraction part G3 is formed in the peripheral part of the leg opening part LH, as shown in FIG.
おむつ1では、ウエスト伸縮部G1は、図2に示すように、縦方向(X方向)において、吸収性本体2を構成する吸収体23の縦方向(X方向)の前後端部23A,23Bの外端縁23A1,23B1よりも縦方向Xの外方(横中心線CL2側と反対側)に位置するエンドフラップに形成されている。また、おむつ1では、胴回り下部伸縮部G2は、縦方向(X方向)において、ウエスト伸縮部G1の横中心線CL2側の下端と一対のサイドシール部S,Sの下端との間に位置するサイドフラップに形成されている。
In the diaper 1, the waist stretchable part G <b> 1 is formed in the longitudinal direction (X direction) of the front and rear end parts 23 </ b> A and 23 </ b> B in the longitudinal direction (X direction) of the absorbent body 23 constituting the absorbent main body 2, as shown in FIG. 2. It is formed in the end flap located outside the outer end edges 23A1 and 23B1 in the longitudinal direction X (on the opposite side to the lateral center line CL2 side). Further, in the diaper 1, the waistline lower stretchable part G2 is positioned between the lower end of the waist stretchable part G1 on the side of the horizontal center line CL2 and the lower ends of the pair of side seal parts S, S in the longitudinal direction (X direction). It is formed on the side flap.
おむつ1では、外装体3は、図2~図4に示すように、外層シート6及び内層シート5を接合する複数の融着部8を有している。おむつ1では、外層シート6及び内層シート5は、隣り合う弾性部材71,71の間に間欠的に配置された複数の融着部8により互いに融着された部分(融着部分8T)を有している。おむつ1では、融着部8は、腹側領域A及び背側領域Bにおいて、ウエスト伸縮部G1から胴回り下部伸縮部G2の一部に亘る領域、言い換えれば、外層シート6の折り返し部分である肌側シート6Eが配された領域と重なる外層シート6及び内層シート5における位置に配されている。肌側シート6Eが配された領域に対応する外層シート6及び内層シート5の領域に、融着部8が、縦方向(X方向)に沿って一列をなすように隣り合う弾性部材71,71の間に間欠的に配されており、その複数の融着部8からなる融着部列8Lが、横方向(Y方向)に間隔を開けて複数列配されて、融着部分8Tが形成されている。
In the diaper 1, the exterior body 3 has a plurality of fusion portions 8 for joining the outer layer sheet 6 and the inner layer sheet 5 as shown in FIGS. In the diaper 1, the outer layer sheet 6 and the inner layer sheet 5 have a portion (fused portion 8T) fused to each other by a plurality of fused portions 8 disposed intermittently between adjacent elastic members 71, 71. is doing. In the diaper 1, the fusion part 8 is an area extending from the waist stretchable part G <b> 1 to a part of the waistline stretchable part G <b> 2 in the ventral region A and the backside region B, in other words, the skin that is the folded portion of the outer layer sheet 6. It arrange | positions in the position in the outer layer sheet 6 and the inner layer sheet 5 which overlap with the area | region where the side sheet | seat 6E was distribute | arranged. Elastic members 71, 71 adjacent to each other in a region along the longitudinal direction (X direction) in the region of the outer layer sheet 6 and the inner layer sheet 5 corresponding to the region where the skin side sheet 6E is disposed. Are arranged intermittently, and a plurality of fused portion rows 8L including a plurality of fused portions 8 are arranged at intervals in the lateral direction (Y direction) to form a fused portion 8T. Has been.
おむつ1は、図2~図4に示すように、融着部8で固定された内層シート5と外層シート6との間に、横方向(Y方向)に伸長した状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71を有している。好適に、おむつ1では、腹側領域A及び背側領域Bにおいて、ウエスト伸縮部G1から胴回り下部伸縮部G2の一部に亘る領域に、複数本の弾性部材71が、それぞれ、複数の融着部列8Lそれぞれの融着部8どうし間の隙間を通って、横方向(Y方向)に伸長状態で配されている。
As shown in FIGS. 2 to 4, the diaper 1 is disposed between the inner layer sheet 5 and the outer layer sheet 6 fixed by the fusion part 8 in a state of extending in the lateral direction (Y direction) and in the longitudinal direction. A plurality of elastic members 71 are provided intermittently in the (X direction). Preferably, in the diaper 1, in the ventral region A and the dorsal region B, a plurality of elastic members 71 are bonded to a region extending from the waist stretchable part G1 to a part of the waistline lower stretchable part G2. The partial rows 8L are arranged in an extended state in the lateral direction (Y direction) through the gaps between the fused portions 8 of the partial rows 8L.
おむつ1では、図3及び図4に示すように、外装体3を構成する肌側シート6E及び内層シート5は、第1接着剤91により接着された部分(接着剤配置部分91T)を有している。腹側領域A及び背側領域Bにおいて、第1接着剤91は、図5に示すように、おむつ1の外装体3を展開して、折り返し部分を形成する前の外層シート6及び折り返し部分を形成する前の内層シート5を伸長させた状態を平面視して、縦方向Xに折り返しながら横方向に延びる連続線を形成している。縦方向Xに折り返しながら横方向に延びる第1接着剤91の連続線は、外層シート6の折り返し部分となる予定の位置に、螺旋形を形成しながら横方向Yに延びており、横方向に延びる第1接着剤91の連続線が縦方向Xに複数列配されている。このような複数列の第1接着剤91の連続線が配された前記予定の位置が折り返されることによって、外層シート6の折り返し部分である肌側シート6E及び内層シート5は、第1接着剤91の配された接着剤配置部分91Tを有し、第1接着剤91により互いに接着固定されている。肌側シート6E及び内層シート5は、接着剤配置部分91Tにおいては、連続線を形成している第1接着剤91により互いに固定されており、該第1接着剤91で囲まれた部分は第1非接合部分91Nとなっており、互いに固定されていない。
In the diaper 1, as shown in FIG.3 and FIG.4, the skin side sheet | seat 6E and the inner layer sheet 5 which comprise the exterior body 3 have the part (adhesive arrangement | positioning part 91T) adhere | attached with the 1st adhesive agent 91. ing. In the ventral region A and the dorsal region B, as shown in FIG. 5, the first adhesive 91 unfolds the outer body 3 of the diaper 1 and forms the outer layer sheet 6 and the folded portion before forming the folded portion. A state in which the inner layer sheet 5 before formation is stretched is viewed in plan, and a continuous line extending in the horizontal direction while being folded back in the vertical direction X is formed. The continuous line of the first adhesive 91 extending in the lateral direction while being folded back in the longitudinal direction X extends in the lateral direction Y while forming a spiral shape at a position to be a folded portion of the outer layer sheet 6. A plurality of continuous lines of the first adhesive 91 extending in the vertical direction X are arranged. The skin-side sheet 6E and the inner layer sheet 5, which are the folded portions of the outer layer sheet 6, are turned into the first adhesive by folding the predetermined position where the continuous lines of the first row of the first adhesive 91 are arranged. 91 has adhesive arrangement portions 91 </ b> T arranged, and are bonded and fixed to each other by the first adhesive 91. 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 in the adhesive placement portion 91T, and the portion surrounded by the first adhesive 91 is the first. 1 non-joining portions 91N, which are not fixed to each other.
おむつ1では、図5に示す折り返し部分を形成する前の外層シート6及び内層シート5を伸長させた状態において、縦方向Xに隣り合う第1接着剤91の連続線どうしは、縦方向Xの端部において、互いに重なっていてもよく、互いに重なっていなくてもよいが、第1非接合部分91Nを多く形成する観点からは、互いに重なっていない方が好ましい。
In the diaper 1, in the state where the outer layer sheet 6 and the inner layer sheet 5 before forming the folded portion shown in FIG. 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.
おむつ1では、螺旋形を形成している第1接着剤91の坪量は、好ましくは2g/m2以上、さらに好ましくは4g/m2以上、そして、好ましくは10g/m2以下、さらに好ましくは8g/m2以下であり、具体的には、好ましくは2g/m2以上10g/m2以下、さらに好ましくは4g/m2以上8g/m2以下である。第1接着剤91の坪量は、以下の方法によって測定することができる。
In the diaper 1, the basis weight of the first adhesive 91 forming a spiral shape is preferably 2 g / m 2 or more, more preferably 4 g / m 2 or more, and preferably 10 g / m 2 or less, more preferably Is 8 g / m 2 or less, specifically, preferably 2 g / m 2 or more and 10 g / m 2 or less, more preferably 4 g / m 2 or more and 8 g / m 2 or less. The basis weight of the first adhesive 91 can be measured by the following method.
〔第1接着剤91の坪量の測定法〕
腹側領域Aまたは背側領域Bのいずれかにおいて、接着されている内層シート5と肌側シート6Eを、第1接着剤91の連続線の1条により接着された領域の外縁に沿って切り出し、切り出した切片の重量(WT1)と面積(SQ)を測定する。その後、切片を酢酸ブチル中に浸漬させてピンセットで3分間振とうしたのち、金属トレー上に取り出して、換気されたドラフトチャンバー内に48時間静置し、風乾後の切片重量(WT2)を測定する。これらを用いて、下記式より第1接着剤91の坪量を測定する。
第1接着剤91の坪量BW=(WT1-WT2)/SQ [Measurement Method of Basis Weight of First Adhesive 91]
In either the ventral region A or the dorsal region B, the bondedinner layer sheet 5 and skin side sheet 6E are cut out along the outer edge of the region bonded by one continuous line of the first adhesive 91. Then, the weight (WT1) and area (SQ) of the cut section are measured. Then, the section is immersed in butyl acetate, shaken with tweezers for 3 minutes, taken out on a metal tray, left in a ventilated draft chamber for 48 hours, and the section weight (WT2) after air drying is measured. To do. Using these, the basis weight of the first adhesive 91 is measured from the following formula.
Basis weight of first adhesive 91 BW = (WT1-WT2) / SQ
腹側領域Aまたは背側領域Bのいずれかにおいて、接着されている内層シート5と肌側シート6Eを、第1接着剤91の連続線の1条により接着された領域の外縁に沿って切り出し、切り出した切片の重量(WT1)と面積(SQ)を測定する。その後、切片を酢酸ブチル中に浸漬させてピンセットで3分間振とうしたのち、金属トレー上に取り出して、換気されたドラフトチャンバー内に48時間静置し、風乾後の切片重量(WT2)を測定する。これらを用いて、下記式より第1接着剤91の坪量を測定する。
第1接着剤91の坪量BW=(WT1-WT2)/SQ [Measurement Method of Basis Weight of First Adhesive 91]
In either the ventral region A or the dorsal region B, the bonded
Basis weight of first adhesive 91 BW = (WT1-WT2) / SQ
また、第1接着剤91の連続線によって形成された螺旋形の幅(連続線による螺旋形の延びる方向と直交する方向の長さ)は、好ましくは10mm以上、さらに好ましくは14mm以上、そして、好ましくは20mm以下、さらに好ましくは18mm以下であり、具体的には、好ましくは10mm以上20mm以下、さらに好ましくは14mm以上18mm以下である。第1接着剤91の連続線の幅は、肉眼で観察して測定する。第1接着剤91の螺旋形の幅は、連続線の折り返しにおける一方の縦方向X端部と他方の縦方向X端部との間隔を意味する。尚、おむつ1では、第1接着剤91の連続線が螺旋を形成しているので、第1接着剤91の連続線による螺旋形のスパイラル円の直径とみなすこともできる。
The width of the spiral formed by the continuous line of the first adhesive 91 (the length in the direction perpendicular to the direction in which the spiral extends by the continuous line) is preferably 10 mm or more, more preferably 14 mm or more, and Preferably it is 20 mm or less, More preferably, it is 18 mm or less, Specifically, Preferably it is 10 mm or more and 20 mm or less, More preferably, it is 14 mm or more and 18 mm or less. The width of the continuous line of the first adhesive 91 is measured by observing with the naked eye. The spiral width of the first adhesive 91 means the distance between one vertical X end and the other vertical X end in the folding of the continuous line. In the diaper 1, since the continuous line of the first adhesive 91 forms a spiral, it can be regarded as the diameter of a spiral spiral circle formed by the continuous line of the first adhesive 91.
また、おむつ1では、図3及び図4に示すように、外装体3を構成する肌側シート6Eの股下領域C側の端部6ECと、一対のサイドシール部S,Sの股下領域C側の端部SCとで挟まれた領域と重なる位置KTでは、外層シート6及び内層シート5は、第2接着剤92により接着されている。腹側領域A及び背側領域Bにおいて、第2接着剤92は、図5に示すように、おむつ1の外装体3を展開して、折り返し部分を形成する前の外層シート6及び折り返し部分を形成する前の内層シート5を伸長させた状態を平面視して、縦方向Xに折り返しながら横方向に延びる連続線を形成している。縦方向Xに折り返しながら横方向に延びる第2接着剤92の連続線は、重なる位置KTに、螺旋形を形成しながら横方向Yに延びており、横方向に延びる第2接着剤92の連続線が、縦方向Xに複数列配されている。おむつ1では、上述したように、外層シート6及び内層シート5は、肌側シート6Eが配された領域に対応する領域において、複数の融着部8からなる融着部列8Lによって互いに固定されており、肌側シート6Eの股下領域C側の端部6ECの端縁とサイドシール部Sの端部SCの端縁とで挟まれた領域に対応する重なる位置KTにおいて、複数列の第2接着剤92の連続線を形成している第2接着剤92によって互いに固定されている。外層シート6及び内層シート5は、連続線を形成している第2接着剤92により互いに固定されており、該第2接着剤92で囲まれた部分は第2非接合部分92Nとなっており、互いに固定されていない。
Moreover, in the diaper 1, as shown in FIG.3 and FIG.4, the end part 6EC of the crotch area C side of the skin side sheet | seat 6E which comprises the exterior body 3, and the crotch area C side of a pair of side seal parts S and S The outer layer sheet 6 and the inner layer sheet 5 are bonded by the second adhesive 92 at a position KT that overlaps the region sandwiched between the end portions SC. In the ventral region A and the dorsal region B, as shown in FIG. 5, the second adhesive 92 unfolds the outer packaging 3 of the diaper 1 and forms the outer layer sheet 6 and the folded portion before forming the folded portion. A state in which the inner layer sheet 5 before formation is stretched is viewed in plan, and a continuous line extending in the horizontal direction while being folded back in the vertical direction X is formed. The continuous line of the second adhesive 92 extending in the horizontal direction while turning back in the vertical direction X extends in the horizontal direction Y while forming a spiral shape at the overlapping position KT, and the continuous line of the second adhesive 92 extending in the horizontal direction. A plurality of lines are arranged in the vertical direction X. In the diaper 1, as described above, the outer layer sheet 6 and the inner layer sheet 5 are fixed to each other by the fusion part row 8L including the plurality of fusion parts 8 in the area corresponding to the area where the skin side sheet 6E is arranged. In the overlapping position KT corresponding to the region sandwiched between the end edge of the end portion 6EC on the crotch region C side of the skin side sheet 6E and the end edge of the end portion SC of the side seal portion S, 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. Are not fixed to each other.
おむつ1では、図5に示す折り返し部分を形成する前の外層シート6及び内層シート5を伸長させた状態において、縦方向Xに隣り合う第2接着剤92の連続線どうしは、縦方向Xの端部において、互いに重なっていてもよく、互いに重なっていなくてもよいが、第2非接合部分92Nを多く形成する観点からは、互いに重なっていない方が好ましい。
In the diaper 1, in the state where the outer layer sheet 6 and the inner layer sheet 5 before forming the folded portion shown in FIG. 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.
おむつ1では、螺旋形を形成している第2接着剤92の坪量は、第1接着剤91の坪量よりも大きいことが好ましく、好適に、好ましくは2g/m2以上、さらに好ましくは4g/m2以上、そして、好ましくは10g/m2以下、さらに好ましくは8g/m2以下であり、具体的には、好ましくは2g/m2以上10g/m2以下、さらに好ましくは4g/m2以上8g/m2以下である。第2接着剤92の坪量は、上述した第1接着剤91の坪量と同様の方法によって測定することができる。
In the diaper 1, the basis weight of the second adhesive 92 forming a spiral shape is preferably larger than the basis weight of the first adhesive 91, preferably 2 g / m 2 or more, more preferably 4 g / m 2 or more, and preferably 10 g / m 2 or less, more preferably 8 g / m 2 or less, specifically preferably 2 g / m 2 or more and 10 g / m 2 or less, more preferably 4 g / m 2. m 2 or more and 8 g / m 2 or less. The basis weight of the second adhesive 92 can be measured by the same method as the basis weight of the first adhesive 91 described above.
また、第2接着剤92の連続線よって形成された螺旋形の幅(連続線による螺旋形の延びる方向と直交する方向の長さ)は、第1接着剤91の連続線の幅よりも大きいことが好ましく、好適に、好ましくは10mm以上、さらに好ましくは14mm以上、そして、好ましくは20mm以下、さらに好ましくは18mm以下であり、具体的には、好ましくは10mm以上20mm以下、さらに好ましくは14mm以上18mm以下である。第2接着剤92の連続線の幅は、第1接着剤91の連続線の幅と同様の方法によって測定することができる。第2接着剤92の螺旋形の幅は、第1接着剤91の螺旋形の幅と同様に、連続線の折り返しにおける一方の縦方向X端部と他方の縦方向X端部との間隔を意味する。尚、おむつ1では、第2接着剤92の連続線が螺旋を形成しているので、第2接着剤92の連続線による螺旋形のスパイラル円の直径とみなすこともできる。
The width of the spiral formed by the continuous line of the second adhesive 92 (the length in the direction orthogonal to the direction in which the spiral extends by the continuous line) is larger than the width of the continuous line of the first adhesive 91. It is preferably 10 mm or more, more preferably 14 mm or more, and preferably 20 mm or less, more preferably 18 mm or less. Specifically, preferably 10 mm or more and 20 mm or less, more preferably 14 mm or more. 18 mm or less. The width of the continuous line of the second adhesive 92 can be measured by the same method as the width of the continuous line of the first adhesive 91. 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.
また、おむつ1では、図3に示すように、外装体3を構成する内層折り返し部分5Eの肌対向面と肌側シート6Eとが固定されている。好適には、腹側領域A及び背側領域Bにおいて、外層シート6の折り返し部分である肌側シート6Eと内層折り返し部分5Eとが、所定の部位において、接着剤、ヒートシール、高周波シール、超音波シール等の接合手段を介して互いに接合されていることが好ましく、おむつ1では、散点状に配された複数の融着部8によって、互いに固定されている。
Moreover, in the diaper 1, as shown in FIG. 3, the skin opposing surface and the skin side sheet | seat 6E of the inner-layer folding | returning part 5E which comprise the exterior body 3 are being fixed. Preferably, in the ventral region A and the back region B, the skin-side sheet 6E and the inner-layer folded portion 5E that are folded portions of the outer layer sheet 6 are adhesive, heat seal, high-frequency seal, super The diapers 1 are preferably bonded to each other by a plurality of fused portions 8 arranged in a dotted pattern.
また、おむつ1では、図3に示すように、外装体3を構成する内層折り返し部分5Eの非肌対向面と内層シート5とが固定されている。好適には、腹側領域A及び背側領域Bにおいて、内層折り返し部分5Eと内層シート5とが、所定の部位において、接着剤、ヒートシール、高周波シール、超音波シール等の接合手段を介して互いに接合されていることが好ましく、おむつ1では、第4接着剤94により接着固定されている。第4接着剤94は、図5に示す折り返し部分を形成する前の外層シート6及び内層シート5を伸長させた状態において、縦方向Xに折り返しながら横方向に延びる連続線を形成している。縦方向Xに折り返しながら横方向に延びる第4接着剤94の連続線は、内層シート5における内層折り返し部分5Eとなる予定の位置に、螺旋形を形成しながら横方向Yに延びており、横方向に延びる第4接着剤94の連続線が、縦方向Xに単数又は複数列配されていることが好ましく、図5に示す展開且つ伸長状態のおむつ1の外装体3では、縦方向Xに複数列配されている。このような複数列の第4接着剤94の連続線が配された前記予定の位置が折り返されることによって、内層折り返し部分5Eの非肌対向面及び内層シート5は、第4接着剤94の配された接着剤配置部分94Tを有し、第4接着剤94により互いに接着固定されている。内層折り返し部分5E及び内層シート5は、接着剤配置部分94Tにおいては、連続線を形成している第4接着剤94により互いに固定されており、該第4接着剤94で囲まれた部分は第4非接合部分94Nとなっており、互いに固定されていない。
Moreover, in the diaper 1, as shown in FIG. 3, the non-skin opposing surface of the inner layer folding | returning part 5E which comprises the exterior body 3 and the inner layer sheet 5 are being fixed. Preferably, in the ventral region A and the dorsal region B, 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 line of the fourth adhesive 94 extending in the horizontal direction while being folded back in the vertical direction X extends in the horizontal direction Y while forming a spiral shape at a position to be the inner layer folded portion 5E in the inner layer sheet 5. The continuous line of the fourth adhesive 94 extending in the direction is preferably arranged in a single or multiple rows in the vertical direction X. In the exterior body 3 of the expanded and extended diaper 1 shown in FIG. Multiple rows are arranged. When the predetermined position where the continuous lines of the fourth row of the fourth adhesive 94 are arranged is folded, the non-skin facing surface of the inner layer folded portion 5E and the inner layer sheet 5 are disposed on the fourth adhesive 94. The adhesive placement portion 94 </ b> T is formed and is fixedly bonded to each other by the fourth adhesive 94. The inner layer folded portion 5E and the inner layer sheet 5 are fixed to each other by the fourth adhesive 94 forming a continuous line in the adhesive disposing portion 94T, and the portion surrounded by the fourth adhesive 94 is the first. 4 non-joining portions 94N, which are not fixed to each other.
第4接着剤94の連続線が縦方向Xに複数列配されている場合には、縦方向Xに隣り合う第4接着剤94の連続線どうしは、縦方向Xの端部において、互いに重なっていてもよく、互いに重なっていなくてもよいが、第4非接合部分94Nを多く形成する観点からは、互いに重なっていない方が好ましい。
When a plurality of continuous lines of the fourth adhesive 94 are arranged in the vertical direction X, 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. However, from the viewpoint of forming a large number of fourth non-joining portions 94N, it is preferable that they do not overlap each other.
また、おむつ1では、横方向(Y方向)に伸長した状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71は、図2及び図6に示すように、各弾性部材71が、外装体3の腹側領域Aの両側縁部3a1,3a1及び外装体3の背側領域Bの両側縁部3b1,3b1にて、第3接着剤93を介して外層シート6及び内層シート5に接着されている。第3接着剤93は、吸収性物品の分野において一般的に使用されるコームガンを用いて各弾性部材71の表面上にのみ塗工されており、外装体3の腹側領域Aの両側縁部3a1,3a1及び外装体3の背側領域Bの両側縁部3b1,3b1は、隣り合う弾性部材71間に第3接着剤93が配されていない部分を有する。このように、おむつ1では、外装体3の腹側領域Aの両側縁部3a1,3a1及び外装体3の背側領域Bの両側縁部3b1,3b1に、内層シート5と外層シート6とが弾性部材固定用の第3接着剤93を介して接合された一対の外側固定領域3T1,3T1を有している。
Further, in the diaper 1, a plurality of elastic members 71 arranged in a state of extending in the horizontal direction (Y direction) and intermittently arranged in the vertical direction (X direction), as shown in FIG. 2 and FIG. 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. As described above, in the diaper 1, 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.
また、おむつ1では、吸収性本体2の縦方向(X方向)に沿う両側部の近傍に重なる位置において、内層シート5の非肌対向面又は外層シート6の肌対向面に、吸収性物品の分野において一般的に使用されるコーターを用いて第5接着剤95が面状に塗工されており、面状に塗工された第5接着剤95によって複数の弾性部材71が内層シート5と外層シート6との間で接合された一対の本体側固定領域3T2,3T2を有している。
Moreover, in the diaper 1, in the position which overlaps the vicinity of the both sides along the vertical direction (X direction) of the absorptive main body 2, the non-skin facing surface of the inner layer sheet 5 or the skin facing surface of the outer layer sheet 6 The fifth adhesive 95 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.
おむつ1のウエスト伸縮部G1では、図2に示すように、複数本の弾性部材71が、一対の外側固定領域3T1,3T1間に亘って配されており、それらの弾性部材71は、一対の外側固定領域3T1,3T1それぞれにおいて、内層シート5と外層シート6との間に第3接着剤93によって固定されている一方、一対の外側固定領域3T1,3T1間においては、内層シート5及び外層シート6の何れにも固定されていない。詳述すると、おむつ1のウエスト伸縮部G1では、複数本の弾性部材71が、一対の外側固定領域3T1,3T1間に亘って配されており、それらの弾性部材71は、一対の外側固定領域3T1,3T1それぞれにおいて、内層シート5と外層シート6との間に固定されている一方、横方向Yの中央領域を含む一対の外側固定領域3T1,3T1間においては、内層シート5及び外層シート6の何れにも固定されていない。
In the waist elastic part G1 of the diaper 1, as shown in FIG. 2, a plurality of elastic members 71 are arranged between the pair of outer fixing regions 3T1, 3T1, and these elastic members 71 In each of the outer fixing regions 3T1 and 3T1, 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. More specifically, in the waist stretchable part G1 of the diaper 1, 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. In each of 3T1 and 3T1, 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.
また、おむつ1の胴回り下部伸縮部G2では、図2に示すように、複数本の弾性部材71が、外側固定領域3T1と本体側固定領域3T2との間に亘って配されており、それらの弾性部材71は、外側固定領域3T1と本体側固定領域3T2とのそれぞれにおいて、内層シート5と外層シート6との間に固定されている一方、外側固定領域3T1と本体側固定領域3T2との間においては、内層シート5及び外層シート6の何れにも固定されていない。おむつ1の胴回り下部伸縮部G2では、一対の本体側固定領域3T2,3T2の間には、弾性部材71が配されていないか、或いは、弾性部材71が、弾性伸縮性を発現しないように細かく分断される等の処理を施された状態で配されている。
Further, in the waistline lower stretchable part G2 of the diaper 1, as shown in FIG. 2, 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. In the waistline lower stretchable part G2 of the diaper 1, 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.
おむつ1のレッグ伸縮部G3では、図2に示すように、レッグ開口部LHの周縁部に伸長状態で配された複数のレッグ弾性部材72が、第6接着剤96を介して内層シート5と外層シート6との間に固定されている。好適に、おむつ1では、図5に示すように、股下領域Cにおいて、外装体3を構成する外層シート6及び内層シート5は、第6接着剤96により接着されている。股下領域Cにおいて、第6接着剤96は、図5に示すように、おむつ1の外装体3を展開して、折り返し部分を形成する前の外層シート6及び折り返し部分を形成する前の内層シート5を伸長させた状態を平面視して、外層シート6と内層シート5との間に配され、一対のレッグ開口部LH,LHそれぞれに沿って曲線状に伸長した状態で配された複数本のレッグ弾性部材72を固定している。第6接着剤96は、横方向Yに沿って複数本配され、各第6接着剤96が、横方向Yに平行におむつ1の全幅に亘って配されており、複数本の第6接着剤96によってストライプ状に塗工されている。
In the leg stretchable part G3 of the diaper 1, as shown in FIG. 2, 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. Preferably, in the diaper 1, as shown in FIG. 5, in the crotch region C, the outer layer sheet 6 and the inner layer sheet 5 constituting the exterior body 3 are bonded by a sixth adhesive 96. In the crotch region C, as shown in FIG. 5, 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. 5 in a plan view, the plurality of pieces arranged between the outer layer sheet 6 and the inner layer sheet 5 and arranged in a curved shape along each of the pair of leg openings LH and LH. The leg elastic member 72 is fixed. A plurality of sixth adhesives 96 are 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.
股下領域Cに配される第6接着剤96は、例えば、吸収性物品の分野において一般的に使用されるコーターを用いて、外層シート6の肌対向面又は内層シート5の非肌対向面にストライプ状に塗工されている。
The sixth adhesive 96 disposed in the crotch region C is applied to the skin facing surface of the outer layer sheet 6 or the non-skin facing surface of the inner layer sheet 5 using, for example, a coater generally used in the field of absorbent articles. It is applied in stripes.
上述したおむつ1の各部の形成材料について説明する。
吸収性本体2を構成する表面シート21、裏面シート22、吸収体23及び防漏カフ24等としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のもの等を特に制限なく用いることができる。例えば、表面シート21としては、単層又は多層構造の不織布や、開孔フィルム等を用いることができる。裏面シート22としては、透湿性の樹脂フィルム等を用いることができる。吸収体23としては、吸収性ポリマーの粒子及び繊維材料から構成された吸収性コアをティッシュペーパーによって被覆されているものを用いることができる。また、防漏カフ24としては、撥水性の単層又は多層構造の不織布等を用いることができる。 The formation material of each part of thediaper 1 mentioned above is demonstrated.
As thetop sheet 21, the back sheet 22, the absorber 23, the leak-proof cuff 24, etc. constituting the absorbent main body 2, various kinds of materials conventionally used for absorbent articles such as disposable diapers are used without particular limitation. Can do. For example, as the surface sheet 21, a single layer or multilayer nonwoven fabric, a perforated film, or the like can be used. As the back sheet 22, a moisture-permeable resin film or the like can be used. As the absorbent body 23, an absorbent core made of absorbent polymer particles and a fiber material and covered with a tissue paper can be used. Moreover, as the leak-proof cuff 24, a water-repellent single layer or multilayer nonwoven fabric or the like can be used.
吸収性本体2を構成する表面シート21、裏面シート22、吸収体23及び防漏カフ24等としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のもの等を特に制限なく用いることができる。例えば、表面シート21としては、単層又は多層構造の不織布や、開孔フィルム等を用いることができる。裏面シート22としては、透湿性の樹脂フィルム等を用いることができる。吸収体23としては、吸収性ポリマーの粒子及び繊維材料から構成された吸収性コアをティッシュペーパーによって被覆されているものを用いることができる。また、防漏カフ24としては、撥水性の単層又は多層構造の不織布等を用いることができる。 The formation material of each part of the
As the
弾性部材(防漏カフ形成用弾性部材25、弾性部材71、レッグ弾性部材72等)としては、例えば、スチレン-ブタジエン、ブタジエン、イソプレン、ネオプレン等の合成ゴム、天然ゴム、EVA、伸縮性ポリオレフィン、ポリウレタン等を挙げることができる。弾性部材の形態としては、断面が矩形、正方形、円形、楕円形、若しくは多角形状等の糸状(糸ゴム等)、又は紐状(平ゴム等)のもの等を好ましく用いることができる。
Examples of the elastic member (the leakage preventing cuff forming elastic member 25, the elastic member 71, the leg elastic member 72, etc.) include synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, stretchable polyolefin, A polyurethane etc. can be mentioned. As the form of the elastic member, 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.
弾性部材(防漏カフ形成用弾性部材25、弾性部材71、レッグ弾性部材72等)を固定する弾性部材固定用接着剤、及び外装体3及び吸収性本体2等を固定する本体固定用接着剤、具体的に、第1接着剤91、第2接着剤92、第3接着剤93、第4接着剤94、第5接着剤95及び第6接着剤96等としては、使い捨ておむつ等の吸収性物品に従来用いられている各種のホットメルト接着剤等を特に制限なく用いることができる。
Elastic member fixing adhesive for fixing elastic members (such as the leakage preventing cuff forming elastic member 25, the elastic member 71, the leg elastic member 72, etc.), and the main body fixing adhesive for fixing the exterior body 3, the absorbent main body 2 and the like Specifically, as the first adhesive 91, the second adhesive 92, the third adhesive 93, the fourth adhesive 94, the fifth adhesive 95, the sixth adhesive 96, and the like, absorbability of disposable diapers and the like Various hot melt adhesives conventionally used for articles can be used without particular limitation.
上述した本実施形態のおむつ1の作用効果について説明する。
上述したおむつ1では、図1及び図2に示すように、外装体3が、外層シート6と、内層シート5と、腹側領域A及び背側領域Bに肌側シート6Eと、横方向Yに伸長状態で配された複数本の弾性部材71とを具備し、外層シート6及び内層シート5は、隣り合う弾性部材71,71の間に間欠的に配置された複数の融着部8により互いに融着された融着部分8Tを有している。おむつ1では、外装体3の融着部分8Tであるウエスト伸縮部G1及び胴回り下部伸縮部G2において、内層シート5と外層シート6との間に横方向(Y方向)に伸長状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71の収縮により、横方向(Y方向)に隣接する融着部列8L,8Lどうしの間の外層シート6が外方に膨らむように変形し、肌側シート6E及び内層シート5が内方に膨らむように変形してギャザー部が形成されるようになる。このように変形して形成される空間によって、おむつ1の使用中のムレ感を改善することができる。 The effect of thediaper 1 of this embodiment mentioned above is demonstrated.
In thediaper 1 described above, as shown in 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. In the diaper 1, 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. Thus, 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.
上述したおむつ1では、図1及び図2に示すように、外装体3が、外層シート6と、内層シート5と、腹側領域A及び背側領域Bに肌側シート6Eと、横方向Yに伸長状態で配された複数本の弾性部材71とを具備し、外層シート6及び内層シート5は、隣り合う弾性部材71,71の間に間欠的に配置された複数の融着部8により互いに融着された融着部分8Tを有している。おむつ1では、外装体3の融着部分8Tであるウエスト伸縮部G1及び胴回り下部伸縮部G2において、内層シート5と外層シート6との間に横方向(Y方向)に伸長状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71の収縮により、横方向(Y方向)に隣接する融着部列8L,8Lどうしの間の外層シート6が外方に膨らむように変形し、肌側シート6E及び内層シート5が内方に膨らむように変形してギャザー部が形成されるようになる。このように変形して形成される空間によって、おむつ1の使用中のムレ感を改善することができる。 The effect of the
In the
上述したおむつ1は、外装体3の肌対向面を形成する最も内側のシートである肌側シート6Eが、17g/m2以下のスパンボンド不織布で構成されており、肌側シート6E及び内層シート5は、図4及び図5に示すように、縦方向Xに折り返しながら横方向に延びる連続線を形成している第1接着剤91によって接着された部分である接着剤配置部分91Tを有している。接着剤配置部分91Tにおいては、肌側シート6E及び内層シート5は、図3及び図7(a)に示すように、連続線を形成している第1接着剤91により互いに固定されており、該第1接着剤91で囲まれた部分は第1非接合部分91Nとなっており、互いに固定されていない。その為、横方向(Y方向)に伸長状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71の収縮により、図7(b)に示すように、肌側シート6E及び内層シート5の第1非接合部分91Nが膨らんで変形し易い。このように肌側シート6Eが着用者側の内方に膨らんで変形すれば、肌側シート6Eが配された領域に対応する外層シート6及び内層シート5の領域を固定するために形成された融着部8が着用者の肌に触れ難く、17g/m2以下のスパンボンド不織布という柔らかな不織布で構成された肌側シート6Eと相俟って、肌触りが更に向上し、おむつ1の品質が更に向上する。
In the diaper 1 described above, 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. In the adhesive placement portion 91T, 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. For this reason, as shown in FIG. 7B, 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. When 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 fusion part 8 is difficult to touch the wearer's skin, and together with the skin side sheet 6E composed of a soft non-woven fabric called spunbond non-woven fabric of 17 g / m 2 or less, the touch is further improved, and the quality of the diaper 1 Is further improved.
また、上述したおむつ1では、図3及び図4に示すように、肌側シート6Eの股下領域C側の端部6ECとサイドシール部Sの端部SCとで挟まれた領域に対応する重なる位置KTにおいて、外層シート6及び内層シート5は、連続線を形成している第2接着剤92により互いに固定されており、該第2接着剤92で囲まれた部分は第2非接合部分92Nとなっており、互いに固定されていない。その為、横方向(Y方向)に伸長状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71の収縮により、外層シート6及び内層シート5の第2非接合部分92Nが膨らんで変形し易い(図7(b)参照)。このように、重なる位置KTにおいて、内層シート5が着用者側の内方に膨らんで変形すれば、肌側シート6Eの股下領域C側の端部6ECとサイドシール部Sの端部SCとで挟まれた領域において、肌触りが更に向上し、おむつ1の品質が更に向上する。
Moreover, in the diaper 1 mentioned above, as shown in FIG.3 and FIG.4, it overlaps corresponding to the area | region pinched | interposed by the edge part 6EC by the side of the crotch area | region C of the skin side sheet | seat 6E, and the edge part SC of the side seal part S. At the position KT, 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. Therefore, the second non-bonding of the outer layer sheet 6 and the inner layer sheet 5 is caused by contraction of the plurality of elastic members 71 arranged in the lateral direction (Y direction) and intermittently arranged in the vertical direction (X direction). The portion 92N is swollen and easily deformed (see FIG. 7B). In this way, at the overlapping position KT, if the inner layer sheet 5 swells and deforms inward on the wearer side, the end part 6EC on the crotch region C side of the skin side sheet 6E and the end part SC of the side seal part S In the sandwiched area, the touch is further improved, and the quality of the diaper 1 is further improved.
また、上述したおむつ1では、図2及び図6に示すように、外装体3の腹側領域Aの両側縁部3a1,3a1及び外装体3の背側領域Bの両側縁部3b1,3b1を接合する一対のサイドシール部S,Sそれぞれにおいて、弾性部材71を固定する外側固定領域3T1を有し、各外側固定領域3T1は、縦方向Xに隣り合う弾性部材71,71間に第3接着剤93が配されていない部分を有している。その為、一対のサイドシール部S,Sが硬くなり過ぎることを防止でき、肌触りが更に向上し、おむつ1の品質が更に向上する。
Moreover, in the diaper 1 mentioned above, as shown in FIG.2 and FIG.6, both the side edge parts 3a1 and 3a1 of the ventral | abdominal side area A of the exterior body 3 and the both side edge parts 3b1 and 3b1 of the back side area | region B of the exterior body 3 are provided. Each of the pair of side seal portions S and S to be joined has an outer fixing region 3T1 for fixing the elastic member 71, and each outer fixing region 3T1 is third bonded between the elastic members 71 and 71 adjacent in the longitudinal direction X. It has a portion where the agent 93 is not arranged. Therefore, it can prevent that a pair of side seal part S and S becomes hard too much, the touch improves further, and the quality of the diaper 1 further improves.
また、上述したおむつ1では、図3に示すように、腹側領域A及び背側領域Bにおいて、外装体3を構成する内層折り返し部分5Eの肌対向面と、外層シート6の折り返し部分である肌側シート6Eとが、散点状に配された複数の融着部8によって、互いに固定されている。その為、弾性部材71の位置や配列がずれることによる着用感の悪化が起こり難く、また弾性部材71と外層シート6及び肌側シート6Eとが独立に可動することで、例えば弾性部材71の収縮によって、外層シート6と肌側シート6Eにクッションの役割を担う凹凸が生じ易く、肌への刺激が低減する効果を奏する。尚、肌触りの観点から、内層折り返し部分5Eの肌対向面と肌側シート6Eとの固定は、融着部8ではなく、接着剤であることが好ましい。
Moreover, in the diaper 1 mentioned above, as shown in FIG. 3, it is the skin opposing surface of the inner layer folding | returning part 5E which comprises the exterior body 3, and the folding part of the outer layer sheet | seat 6 in the abdominal side area | region A and the back side area | region B. 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. As a result, the outer layer sheet 6 and the skin side sheet 6E are likely to have irregularities serving as cushions, and the effect of reducing irritation to the skin is achieved. In addition, from the viewpoint of the touch, it is preferable that the fixation between the skin facing surface of the inner layer folded portion 5E and the skin side sheet 6E is not the fused portion 8 but an adhesive.
また、上述したおむつ1では、図3に示すように、腹側領域A及び背側領域Bにおいて、外装体3を構成する内層折り返し部分5Eの非肌対向面と内層シート5とが固定されている。その為、ウエスト開口部WHにおいて内層折り返し部分5Eが内層シート5から離れるなどの予期しない変形による着用感や外観の悪化が抑制される効果を奏する。尚、おむつ1では、内層折り返し部分5Eの非肌対向面及び内層シート5は、第4接着剤94の配された接着剤配置部分94Tを有し、接着剤配置部分94Tにおいては、内層折り返し部分5E及び内層シート5は、第4接着剤94により互いに接着固定されており、連続線を形成している第4接着剤94で囲まれた部分は第4非接合部分94Nとなっており、互いに固定されていない。その為、横方向(Y方向)に伸長状態で配され且つ縦方向(X方向)に間欠的に配された複数の弾性部材71の収縮により、内層折り返し部分5E及び内層シート5の第4非接合部分94Nが膨らんで変形し易い(図7(b)参照)。このように変形すれば、例えば弾性部材71の収縮によって、内層折り返し部分5Eの非肌対向面及び内層シート5の間にクッションの役割を担う凹凸が生じ易く、肌への刺激が低減する効果を奏する。
Moreover, in the diaper 1 mentioned above, as shown in FIG. 3, the non-skin opposing surface and inner layer sheet | seat 5 of the inner-layer folding | returning part 5E which comprise the exterior body 3 are being fixed in the abdominal area A and the back area B. Yes. Therefore, the waist opening WH has an effect of suppressing the deterioration of wearing feeling and appearance due to unexpected deformation such as the inner layer folded portion 5E being separated from the inner layer sheet 5. In the diaper 1, the non-skin facing surface of the inner layer folded portion 5 </ b> E and the inner layer sheet 5 have an adhesive arrangement portion 94 </ b> T in which a fourth adhesive 94 is arranged, and the adhesive arrangement portion 94 </ b> T has an inner layer folded portion. 5E and the inner layer sheet 5 are bonded and fixed to each other by a fourth adhesive 94, and a portion surrounded by the fourth adhesive 94 forming a continuous line is a fourth non-joined portion 94N. It is not fixed. For this reason, due to the contraction of the plurality of elastic members 71 arranged in the horizontal direction (Y direction) and intermittently arranged in the vertical direction (X direction), the inner layer folded portion 5E and the fourth non-folding of the inner layer sheet 5 are caused. The joining portion 94N swells and is easily deformed (see FIG. 7B). If it deform | transforms in this way, the unevenness | corrugation which plays the role of a cushion will be easy to produce between the non-skin opposing surface of the inner-layer folding | returning part 5E and the inner-layer sheet | seat 5, for example by shrinkage | contraction of the elastic member 71, and the effect of reducing the irritation | stimulation to skin Play.
以上、本発明をその好ましい実施形態に基づき説明したが、本発明は上述した実施形態に制限されず適宜変更可能である。
As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the embodiment mentioned above, It can change suitably.
例えば、上述したおむつ1は、図3及び図4に示すように、腹側領域A及び背側領域Bにおいて、外装体3を構成する不織布として、内層シート5、内層折り返し部分5E、外層シート6、及び外層シート6の折り返し部分である肌側シート6Eを有しているが、腹側領域A及び背側領域Bの外装体3を形成する不織布の構成が異なっていてもよい。例えば、背側領域Bにおける外装体3を構成する不織布が、内層シート5、内層折り返し部分5E、外層シート6、及び肌側シート6Eを有しており、腹側領域Aにおける外装体3を構成する不織布が、内層シート5及び外層シート6のみを有する形態であってもよい。
For example, as shown in FIGS. 3 and 4, 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. And the skin side sheet 6E which is the folding | turning part of the outer layer sheet | seat 6 is provided, However, The structure of the nonwoven fabric which forms the exterior body 3 of the ventral | abdominal area | region A and the back | dorsal area | region B may differ. For example, the nonwoven fabric constituting the exterior body 3 in the back region B has an inner layer sheet 5, an inner layer folded portion 5E, an outer layer sheet 6, and a skin side sheet 6E, and constitutes the exterior body 3 in the ventral region A. The form which has only the inner layer sheet 5 and the outer layer sheet 6 may be sufficient as the nonwoven fabric to do.
また、上述したおむつ1は、図3及び図4に示すように、腹側領域A及び背側領域Bにおいて、外装体3を構成する不織布として、内層シート5、内層折り返し部分5E、外層シート6、及び外層シート6の折り返し部分である肌側シート6Eを有しているが、内層折り返し部分5Eを有していなくてもよい。
Moreover, as shown in FIG.3 and FIG.4, the diaper 1 mentioned above WHEREIN: In the ventral | abdominal area | region A and the back | dorsal area | region B, as the nonwoven fabric which comprises the exterior body 3, the inner-layer sheet 5, the inner-layer folding | returning part 5E, and the outer-layer sheet 6 Although it has the skin side sheet 6E that is the folded portion of the outer layer sheet 6, it may not have the inner layer folded portion 5E.
また、上述したおむつ1は、図3及び図4に示すように、外装体3を構成する不織布として、内層シート5、外層シート6及び、外層シート6の折り返し部分である肌側シート6Eを有しているが、肌側シート6Eが、外層シート6の折り返し部分で形成されていなくてもよい。即ち、外装体3を構成する不織布として、内層シート5及び外層シート6以外に、別体の疎水性の繊維からなる肌側シート6Eを有していてもよい。
Further, as shown in FIGS. 3 and 4, 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. However, 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.
また、上述した使い捨ておむつ1においては、図2に示すように、外装体3が腹側領域A、股下領域C及び背側領域Bにわたる砂時計状等の連続した形状のパンツ型使い捨ておむつであるが、外装体3が、腹側外装体、背側外装体及び股下外装体に別部材として区分された分割型のパンツ型使い捨ておむつであってもよい。
Moreover, in the disposable diaper 1 mentioned above, as shown in FIG. 2, 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.
上述した実施形態に関し、さらに以下のパンツ型使い捨ておむつを開示する。
The following pant-type disposable diapers are further disclosed regarding the embodiment described above.
<1>
着用者の腹側に配される腹側領域及び背側に配される背側領域とそれらの間に位置する股下領域とを有すると共に、該腹側領域から該股下領域を介して該背側領域に延びる縦方向とこれに直交する横方向とを有し、且つ液保持性の吸収体を含む吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体とを備え、前記腹側領域及び前記背側領域それぞれにおける該外装体の縦方向に沿う両側縁部どうしが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型使い捨ておむつであって、
前記外装体は、前記パンツ型使い捨ておむつの非肌対向面を形成する外層シートと、該外層シートの肌対向面側に配される内層シートと、前記腹側領域及び前記背側領域の少なくとも一方において該内層シートの肌対向面側に配される肌側シートと、該外層シート及び該内層シートの間に横方向に伸長状態で配された複数本の弾性部材とを具備し、
前記外層シート及び前記内層シートは、隣り合う前記弾性部材の間に間欠的に配置された複数の融着部により互いに融着された部分を有しており、
前記肌側シートは、坪量17g/m2以下のスパンボンド不織布であり、
前記肌側シート及び前記内層シートは、第1接着剤により接着された部分を有しており、
前記第1接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している、パンツ型使い捨ておむつ。 <1>
A ventral region disposed on the ventral side of the wearer, a dorsal region disposed on the dorsal side, and a crotch region positioned therebetween, and the dorsal side from the ventral region through the crotch region 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. A pair of side seal portions, a waist opening portion, and a pair of legs joined to each other along the longitudinal direction of the exterior body in each of the ventral region and the dorsal region. A pants-type disposable diaper in which an opening is 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 A skin-side sheet disposed on the skin-facing surface side of the inner layer sheet, and a plurality of elastic members disposed in a laterally extended state between the outer layer sheet and the inner layer sheet,
The outer layer sheet and the inner layer sheet have portions fused to each other by a plurality of fused portions disposed intermittently 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 a portion bonded by a first adhesive,
The first adhesive is a pants-type disposable diaper that 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.
着用者の腹側に配される腹側領域及び背側に配される背側領域とそれらの間に位置する股下領域とを有すると共に、該腹側領域から該股下領域を介して該背側領域に延びる縦方向とこれに直交する横方向とを有し、且つ液保持性の吸収体を含む吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体とを備え、前記腹側領域及び前記背側領域それぞれにおける該外装体の縦方向に沿う両側縁部どうしが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型使い捨ておむつであって、
前記外装体は、前記パンツ型使い捨ておむつの非肌対向面を形成する外層シートと、該外層シートの肌対向面側に配される内層シートと、前記腹側領域及び前記背側領域の少なくとも一方において該内層シートの肌対向面側に配される肌側シートと、該外層シート及び該内層シートの間に横方向に伸長状態で配された複数本の弾性部材とを具備し、
前記外層シート及び前記内層シートは、隣り合う前記弾性部材の間に間欠的に配置された複数の融着部により互いに融着された部分を有しており、
前記肌側シートは、坪量17g/m2以下のスパンボンド不織布であり、
前記肌側シート及び前記内層シートは、第1接着剤により接着された部分を有しており、
前記第1接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している、パンツ型使い捨ておむつ。 <1>
A ventral region disposed on the ventral side of the wearer, a dorsal region disposed on the dorsal side, and a crotch region positioned therebetween, and the dorsal side from the ventral region through the crotch region 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. A pair of side seal portions, a waist opening portion, and a pair of legs joined to each other along the longitudinal direction of the exterior body in each of the ventral region and the dorsal region. A pants-type disposable diaper in which an opening is 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 A skin-side sheet disposed on the skin-facing surface side of the inner layer sheet, and a plurality of elastic members disposed in a laterally extended state between the outer layer sheet and the inner layer sheet,
The outer layer sheet and the inner layer sheet have portions fused to each other by a plurality of fused portions disposed intermittently 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 a portion bonded by a first adhesive,
The first adhesive is a pants-type disposable diaper that 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.
<2>
前記肌側シートは、前記ウエスト開口部の周縁部から前記股下領域に向かって配されており、
前記外層シート及び前記内層シートを融着する前記融着部は、前記肌側シートが配された領域と重なる位置に配されており、
前記肌側シートの前記股下領域側の端部と、一対の前記サイドシール部の前記股下領域側の端部とで挟まれた領域と重なる位置では、前記外層シート及び前記内層シートは、第2接着剤により接着されており、
前記第2接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している、前記<1>に記載のパンツ型使い捨ておむつ。
<3>
前記外層シート及び前記内層シートは、連続線を形成している前記第2接着剤により互いに固定されており、該第2接着剤で囲まれた部分は第2非接合部分となっており、互いに固定されていない、前記<2>に記載のパンツ型使い捨ておむつ。
<4>
折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に隣り合う前記第2接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、前記<2>又は<3>に記載のパンツ型使い捨ておむつ。
<5>
螺旋形を形成している前記第2接着剤の坪量は、前記第1接着剤の坪量よりも大きい、前記<2>~<4>の何れか1に記載のパンツ型使い捨ておむつ。
<6>
螺旋形を形成している前記第2接着剤の坪量は、2g/m2以上、好ましくは4g/m2以上であり、そして、10g/m2以下、好ましくは8g/m2以下である、前記<2>~<5>の何れか1に記載のパンツ型使い捨ておむつ。
<7>
前記第2接着剤の連続線よって形成された螺旋形の幅(連続線による螺旋形の延びる方向と直交する方向の長さ)は、前記第1接着剤の連続線の幅よりも大きい、前記<2>~<6>の何れか1に記載のパンツ型使い捨ておむつ。
<8>
前記第2接着剤の連続線よって形成された螺旋形の幅(連続線による螺旋形の延びる方向と直交する方向の長さ)は、10mm以上、好ましくは14mm以上であり、そして、20mm以下、好ましくは18mm以下である、前記<2>~<7>の何れか1に記載のパンツ型使い捨ておむつ。
<9>
前記弾性部材の収縮により、前記連続線を形成している前記第2接着剤で囲まれた前記外層シート及び前記内層シートの第2非接合部分が膨らんで変形する、前記<2>~<8>の何れか1に記載のパンツ型使い捨ておむつ。 <2>
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 | deployed and expanded the said underpants type disposable diaper is described in said <1>. Pants-type disposable diaper.
<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.
<6>
The basis weight of the second adhesive forming a spiral 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 pants-type disposable diaper according to any one of <2> to <5>.
<7>
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 larger than the width of the continuous line of the first adhesive, The pants-type disposable diaper according to any one of <2> to <6>.
<8>
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, The pants-type disposable diaper according to any one of the above <2> to <7>, which is preferably 18 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.
前記肌側シートは、前記ウエスト開口部の周縁部から前記股下領域に向かって配されており、
前記外層シート及び前記内層シートを融着する前記融着部は、前記肌側シートが配された領域と重なる位置に配されており、
前記肌側シートの前記股下領域側の端部と、一対の前記サイドシール部の前記股下領域側の端部とで挟まれた領域と重なる位置では、前記外層シート及び前記内層シートは、第2接着剤により接着されており、
前記第2接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している、前記<1>に記載のパンツ型使い捨ておむつ。
<3>
前記外層シート及び前記内層シートは、連続線を形成している前記第2接着剤により互いに固定されており、該第2接着剤で囲まれた部分は第2非接合部分となっており、互いに固定されていない、前記<2>に記載のパンツ型使い捨ておむつ。
<4>
折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に隣り合う前記第2接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、前記<2>又は<3>に記載のパンツ型使い捨ておむつ。
<5>
螺旋形を形成している前記第2接着剤の坪量は、前記第1接着剤の坪量よりも大きい、前記<2>~<4>の何れか1に記載のパンツ型使い捨ておむつ。
<6>
螺旋形を形成している前記第2接着剤の坪量は、2g/m2以上、好ましくは4g/m2以上であり、そして、10g/m2以下、好ましくは8g/m2以下である、前記<2>~<5>の何れか1に記載のパンツ型使い捨ておむつ。
<7>
前記第2接着剤の連続線よって形成された螺旋形の幅(連続線による螺旋形の延びる方向と直交する方向の長さ)は、前記第1接着剤の連続線の幅よりも大きい、前記<2>~<6>の何れか1に記載のパンツ型使い捨ておむつ。
<8>
前記第2接着剤の連続線よって形成された螺旋形の幅(連続線による螺旋形の延びる方向と直交する方向の長さ)は、10mm以上、好ましくは14mm以上であり、そして、20mm以下、好ましくは18mm以下である、前記<2>~<7>の何れか1に記載のパンツ型使い捨ておむつ。
<9>
前記弾性部材の収縮により、前記連続線を形成している前記第2接着剤で囲まれた前記外層シート及び前記内層シートの第2非接合部分が膨らんで変形する、前記<2>~<8>の何れか1に記載のパンツ型使い捨ておむつ。 <2>
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 | deployed and expanded the said underpants type disposable diaper is described in said <1>. Pants-type disposable diaper.
<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.
<6>
The basis weight of the second adhesive forming a spiral 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 pants-type disposable diaper according to any one of <2> to <5>.
<7>
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 larger than the width of the continuous line of the first adhesive, The pants-type disposable diaper according to any one of <2> to <6>.
<8>
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, The pants-type disposable diaper according to any one of the above <2> to <7>, which is preferably 18 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.
<10>
各前記弾性部材は、前記外装体における前記腹側領域の両側縁部及び前記背側領域の両側縁部にて、第3接着剤を介して前記外層シート及び前記内層シートに接着されており、
前記外装体の前記腹側領域の両側縁部及び前記背側領域の両側縁部は、隣り合う前記弾性部材の間に前記第3接着剤が配されていない部分を有する、前記<1>~<9>の何れか1に記載のパンツ型使い捨ておむつ。
<11>
前記肌側シートは、前記ウエスト開口部の周縁部から前記吸収性本体の前記背側領域側の端部を覆う位置まで延在している、前記<1>~<10>の何れか1に記載のパンツ型使い捨ておむつ。
<12>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し
前記内層折り返し部分の肌対向面と前記肌側シートとが固定されている、前記<1>~<11>の何れか1に記載のパンツ型使い捨ておむつ。
<13>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された内層折り返し部分を有し
前記内層折り返し部分の非肌対向面と前記内層シートとが固定されている、前記<1>~<12>の何れか1に記載のパンツ型使い捨ておむつ。
<14>
前記肌側シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って前記外層シートが前記内層シートの肌対向面側に折り返された外層折り返し部分である、前記<1>~<13>の何れか1に記載のパンツ型使い捨ておむつ。
<15>
前記肌側シートは、前記背側領域に配された背側肌側シートと前記腹側領域に配された腹側肌側シートとを有し、
前記背側肌側シートは、前記ウエスト開口部の周縁部から前記吸収体の前記背側領域側の端部を覆う位置まで配され、
前記腹側肌側シートは、前記ウエスト開口部の周縁部から前記吸収体の前記腹側領域側の端部を覆う位置まで配されており、
前記吸収体は、前記背側肌側シートで覆われた該吸収体の前記背側領域側の端部の坪量が、前記腹側肌側シートで覆われた該吸収体の前記腹側領域側の端部の坪量よりも小さい、前記<1>~<14>の何れか1に記載のパンツ型使い捨ておむつ。
<16>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し、
前記肌側シートは、縦方向において、前記内層折り返し部分よりも長く形成されている、前記<1>~<15>の何れか1に記載のパンツ型使い捨ておむつ。
<17>
前記肌側シートは、スパンボンド不織布で形成されており、その坪量が、17g/m2以下、15g/m2以下であることが好ましく、坪量の下限値は10g/m2以上である、前記<1>~<16>の何れか1に記載のパンツ型使い捨ておむつ。
<18>
前記肌側シートを含む前記外層シートはスパンボンド不織布で形成されており、
前記外層シートは捲縮長繊維の含有率が、30質量%以上、好ましくは40質量%以上であり、100質量%以下、好ましくは90質量%以下である、前記<1>~<17>の何れか1に記載のパンツ型使い捨ておむつ。 <10>
Each of the elastic members is bonded to the outer layer sheet and the inner layer sheet via a third adhesive at both side edges of the ventral region and both side edges of the back region in the exterior body,
Both the side edges of the ventral region and the side edges of the back side region of the exterior body have portions where the third adhesive is not disposed between the adjacent elastic members. The pants-type disposable diaper according to any one of <9>.
<11>
In any one of the above items <1> to <10>, the skin side sheet extends from a peripheral edge of the waist opening to a position covering an end of the absorbent main body on the back side region side. Pants-type disposable diapers as described.
<12>
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.
<13>
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.
<14>
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>.
<15>
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.
In 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.
<16>
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 pants-type disposable diaper according to any one of <1> to <15>, wherein the skin side sheet is formed longer in the longitudinal direction than the inner layer folded portion.
<17>
The skin side sheet is formed of a spunbonded nonwoven fabric, and the basis weight thereof is preferably 17 g / m 2 or less and 15 g / m 2 or less, and the lower limit value of the basis weight is 10 g / m 2 or more. The pants-type disposable diaper according to any one of <1> to <16>.
<18>
The outer layer sheet including the skin side sheet is formed of a spunbond nonwoven fabric,
The outer layer sheet has a crimped long fiber content of 30% by mass or more, preferably 40% by mass or more, 100% by mass or less, preferably 90% by mass or less, according to <1> to <17>. The underpants type disposable diaper of any one.
各前記弾性部材は、前記外装体における前記腹側領域の両側縁部及び前記背側領域の両側縁部にて、第3接着剤を介して前記外層シート及び前記内層シートに接着されており、
前記外装体の前記腹側領域の両側縁部及び前記背側領域の両側縁部は、隣り合う前記弾性部材の間に前記第3接着剤が配されていない部分を有する、前記<1>~<9>の何れか1に記載のパンツ型使い捨ておむつ。
<11>
前記肌側シートは、前記ウエスト開口部の周縁部から前記吸収性本体の前記背側領域側の端部を覆う位置まで延在している、前記<1>~<10>の何れか1に記載のパンツ型使い捨ておむつ。
<12>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し
前記内層折り返し部分の肌対向面と前記肌側シートとが固定されている、前記<1>~<11>の何れか1に記載のパンツ型使い捨ておむつ。
<13>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された内層折り返し部分を有し
前記内層折り返し部分の非肌対向面と前記内層シートとが固定されている、前記<1>~<12>の何れか1に記載のパンツ型使い捨ておむつ。
<14>
前記肌側シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って前記外層シートが前記内層シートの肌対向面側に折り返された外層折り返し部分である、前記<1>~<13>の何れか1に記載のパンツ型使い捨ておむつ。
<15>
前記肌側シートは、前記背側領域に配された背側肌側シートと前記腹側領域に配された腹側肌側シートとを有し、
前記背側肌側シートは、前記ウエスト開口部の周縁部から前記吸収体の前記背側領域側の端部を覆う位置まで配され、
前記腹側肌側シートは、前記ウエスト開口部の周縁部から前記吸収体の前記腹側領域側の端部を覆う位置まで配されており、
前記吸収体は、前記背側肌側シートで覆われた該吸収体の前記背側領域側の端部の坪量が、前記腹側肌側シートで覆われた該吸収体の前記腹側領域側の端部の坪量よりも小さい、前記<1>~<14>の何れか1に記載のパンツ型使い捨ておむつ。
<16>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し、
前記肌側シートは、縦方向において、前記内層折り返し部分よりも長く形成されている、前記<1>~<15>の何れか1に記載のパンツ型使い捨ておむつ。
<17>
前記肌側シートは、スパンボンド不織布で形成されており、その坪量が、17g/m2以下、15g/m2以下であることが好ましく、坪量の下限値は10g/m2以上である、前記<1>~<16>の何れか1に記載のパンツ型使い捨ておむつ。
<18>
前記肌側シートを含む前記外層シートはスパンボンド不織布で形成されており、
前記外層シートは捲縮長繊維の含有率が、30質量%以上、好ましくは40質量%以上であり、100質量%以下、好ましくは90質量%以下である、前記<1>~<17>の何れか1に記載のパンツ型使い捨ておむつ。 <10>
Each of the elastic members is bonded to the outer layer sheet and the inner layer sheet via a third adhesive at both side edges of the ventral region and both side edges of the back region in the exterior body,
Both the side edges of the ventral region and the side edges of the back side region of the exterior body have portions where the third adhesive is not disposed between the adjacent elastic members. The pants-type disposable diaper according to any one of <9>.
<11>
In any one of the above items <1> to <10>, the skin side sheet extends from a peripheral edge of the waist opening to a position covering an end of the absorbent main body on the back side region side. Pants-type disposable diapers as described.
<12>
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.
<13>
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.
<14>
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>.
<15>
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.
In 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.
<16>
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 pants-type disposable diaper according to any one of <1> to <15>, wherein the skin side sheet is formed longer in the longitudinal direction than the inner layer folded portion.
<17>
The skin side sheet is formed of a spunbonded nonwoven fabric, and the basis weight thereof is preferably 17 g / m 2 or less and 15 g / m 2 or less, and the lower limit value of the basis weight is 10 g / m 2 or more. The pants-type disposable diaper according to any one of <1> to <16>.
<18>
The outer layer sheet including the skin side sheet is formed of a spunbond nonwoven fabric,
The outer layer sheet has a crimped long fiber content of 30% by mass or more, preferably 40% by mass or more, 100% by mass or less, preferably 90% by mass or less, according to <1> to <17>. The underpants type disposable diaper of any one.
<19>
前記肌側シートはスパンボンド不織布で形成されており、
前記肌側シートは、該前記肌側シートを構成する繊維の配向方向に直交する方向の破断強度が、7.0N/50mm以上、好ましくは8.0N/50mm以上であり、そして、30.0N/50mm以下である、前記<1>~<18>の何れか1に記載のパンツ型使い捨ておむつ。
<20>
前記肌側シートに用いるスパンボンド不織布は、その構成繊維を固着して該スパンボンド不織布を構成する複数の熱融着部を有し、該複数の熱融着部は、個々の面積が、0.3mm2以下、好ましくは0.1mm2以上0.25mm2以下、更に好ましくは0.1mm2以上0.2mm2以下である、前記<1>~<19>の何れか1に記載のパンツ型使い捨ておむつ。
<21>
前記肌側シートに用いる前記スパンボンド不織布は、その一面の表面積に占める前記複数の熱融着部の合計面積の割合(エンボス率)が、15%以下、好ましくは5%以上13%以下、更に好ましくは6%以上11%以下である、前記<1>~<20>の何れか1に記載のパンツ型使い捨ておむつ。
<22>
前記肌側シート及び前記内層シートは、接着剤配置部分においては、連続線を形成している前記第1接着剤により互いに固定されており、連続線を形成している前記第1接着剤で囲まれた部分は第1非接合部分となっており、互いに固定されていない、前記<1>~<21>の何れか1に記載のパンツ型使い捨ておむつ。
<23>
折り返し部分を形成する前の前記外層シート及び前記内層シート5伸長させた状態において、縦方向に隣り合う前記第1接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、前記<1>~<22>の何れか1に記載のパンツ型使い捨ておむつ。
<24>
螺旋形を形成している前記第1接着剤の坪量は、2g/m2以上、好ましくは4g/m2以上であり、そして、10g/m2以下、好ましくは8g/m2以下である、前記<1>~<23>の何れか1に記載のパンツ型使い捨ておむつ。
<25>
螺旋形を形成している前記第1接着剤の連続線の幅(連続線の延びる方向と直交する方向の長さ)は、10mm以上、好ましくは14mm以上であり、そして、20mm以下、好ましくは18mm以下である、前記<1>~<24>の何れか1に記載のパンツ型使い捨ておむつ。
<26>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し、
前記内層折り返し部分と前記内層シートとが、第4接着剤により接着固定されており、
前記第4接着剤は、折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に折り返しながら横方向に延びる連続線を形成している、前記<1>~<25>の何れか1に記載のパンツ型使い捨ておむつ。 <19>
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.
<20>
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. .3Mm 2 or less, preferably 0.1 mm 2 or more 0.25 mm 2 or less, further preferably 0.1 mm 2 or more 0.2 mm 2 or less, pants according to any one of <1> to <19> Type disposable diaper.
<21>
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.
<22>
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 pants-type disposable diaper according to any one of <1> to <21>, wherein the portion is a first non-joined portion and is not fixed to each other.
<23>
In the state where the outer layer sheet and theinner layer sheet 5 are stretched before forming the folded portion, 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>.
<24>
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 pants-type disposable diaper according to any one of <1> to <23>.
<25>
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.
<26>
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 inner layer folded portion and the inner layer sheet are bonded and fixed by a fourth adhesive,
The fourth adhesive forms a continuous line extending in the lateral direction while being folded back in the vertical direction in a state where the outer layer sheet and the inner layer sheet are stretched before forming the folded portion. The underpants-type disposable diaper according to any one of <25>.
前記肌側シートはスパンボンド不織布で形成されており、
前記肌側シートは、該前記肌側シートを構成する繊維の配向方向に直交する方向の破断強度が、7.0N/50mm以上、好ましくは8.0N/50mm以上であり、そして、30.0N/50mm以下である、前記<1>~<18>の何れか1に記載のパンツ型使い捨ておむつ。
<20>
前記肌側シートに用いるスパンボンド不織布は、その構成繊維を固着して該スパンボンド不織布を構成する複数の熱融着部を有し、該複数の熱融着部は、個々の面積が、0.3mm2以下、好ましくは0.1mm2以上0.25mm2以下、更に好ましくは0.1mm2以上0.2mm2以下である、前記<1>~<19>の何れか1に記載のパンツ型使い捨ておむつ。
<21>
前記肌側シートに用いる前記スパンボンド不織布は、その一面の表面積に占める前記複数の熱融着部の合計面積の割合(エンボス率)が、15%以下、好ましくは5%以上13%以下、更に好ましくは6%以上11%以下である、前記<1>~<20>の何れか1に記載のパンツ型使い捨ておむつ。
<22>
前記肌側シート及び前記内層シートは、接着剤配置部分においては、連続線を形成している前記第1接着剤により互いに固定されており、連続線を形成している前記第1接着剤で囲まれた部分は第1非接合部分となっており、互いに固定されていない、前記<1>~<21>の何れか1に記載のパンツ型使い捨ておむつ。
<23>
折り返し部分を形成する前の前記外層シート及び前記内層シート5伸長させた状態において、縦方向に隣り合う前記第1接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、前記<1>~<22>の何れか1に記載のパンツ型使い捨ておむつ。
<24>
螺旋形を形成している前記第1接着剤の坪量は、2g/m2以上、好ましくは4g/m2以上であり、そして、10g/m2以下、好ましくは8g/m2以下である、前記<1>~<23>の何れか1に記載のパンツ型使い捨ておむつ。
<25>
螺旋形を形成している前記第1接着剤の連続線の幅(連続線の延びる方向と直交する方向の長さ)は、10mm以上、好ましくは14mm以上であり、そして、20mm以下、好ましくは18mm以下である、前記<1>~<24>の何れか1に記載のパンツ型使い捨ておむつ。
<26>
前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し、
前記内層折り返し部分と前記内層シートとが、第4接着剤により接着固定されており、
前記第4接着剤は、折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に折り返しながら横方向に延びる連続線を形成している、前記<1>~<25>の何れか1に記載のパンツ型使い捨ておむつ。 <19>
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.
<20>
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. .3Mm 2 or less, preferably 0.1 mm 2 or more 0.25 mm 2 or less, further preferably 0.1 mm 2 or more 0.2 mm 2 or less, pants according to any one of <1> to <19> Type disposable diaper.
<21>
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.
<22>
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 pants-type disposable diaper according to any one of <1> to <21>, wherein the portion is a first non-joined portion and is not fixed to each other.
<23>
In the state where the outer layer sheet and the
<24>
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 pants-type disposable diaper according to any one of <1> to <23>.
<25>
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.
<26>
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 inner layer folded portion and the inner layer sheet are bonded and fixed by a fourth adhesive,
The fourth adhesive forms a continuous line extending in the lateral direction while being folded back in the vertical direction in a state where the outer layer sheet and the inner layer sheet are stretched before forming the folded portion. The underpants-type disposable diaper according to any one of <25>.
<27>
縦方向に折り返しながら横方向に延びる前記第4接着剤の連続線は、前記内層シートにおける前記内層折り返し部分となる予定の位置に、螺旋形を形成しながら横方向に延びており、横方向に延びる第4接着剤の連続線が、縦方向に複数列配されている、前記<26>に記載のパンツ型使い捨ておむつ。
<28>
前記内層折り返し部分及び前記内層シートは、接着剤配置部分においては、連続線を形成している前記第4接着剤により互いに固定されており、該第4接着剤で囲まれた部分は第4非接合部分となっており、互いに固定されていない、前記<26>又は<27>に記載のパンツ型使い捨ておむつ。
<29>
前記第4接着剤の連続線が縦方向に複数列配されており、縦方向に隣り合う該第4接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、前記<26>~<28>の何れか1に記載のパンツ型使い捨ておむつ。
<30>
前記外装体の前記腹側領域の両側縁部及び該外装体の前記背側領域の両側縁部に、前記内層シートと前記外層シートとが弾性部材固定用の第3接着剤を介して接合された一対の外側固定領域を有しており、
複数本の前記弾性部材が、一対の前記外側固定領域間に亘って配されており、該弾性部材は、一対の該外側固定領域それぞれにおいて、前記内層シートと前記外層シートとの間に前記第3接着剤によって固定されている一方、一対の該外側固定領域間においては、該内層シート及び該外層シートの何れにも固定されていない、前記<1>~<29>の何れか1に記載のパンツ型使い捨ておむつ。
<31>
前記股下領域において、前記外装体を構成する前記外層シート及び前記内層シートは、第6接着剤により接着されている、前記<1>~<30>の何れか1に記載のパンツ型使い捨ておむつ。
<32>
前記第6接着剤は、横方向に沿って複数本配され、が第6接着剤が、横方向に平行にパンツ型使い捨ておむつの全幅に亘って配されており、複数本の該第6接着剤がストライプ状に塗工されている、前記<31>に記載のパンツ型使い捨ておむつ。
<33>
前記弾性部材の収縮により、前記連続線を形成している前記第1接着剤で囲まれた前記肌側シート及び前記内層シートの第1非接合部分が膨らんで変形する、前記<1>~<32>の何れか1に記載のパンツ型使い捨ておむつ。
<34>
前記吸収体は、前記腹側領域から前記股下領域を通って前記背側領域にまで亘る下層吸収体と、該腹側領域から該股下領域にのみ亘る上層吸収体とを有している、前記<1>~<33>の何れか1に記載のパンツ型使い捨ておむつ。 <27>
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.
<28>
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.
<29>
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>.
<30>
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. <3> to <29>, wherein the sheet is fixed by three adhesives, but is not fixed to either the inner layer sheet or the outer layer sheet between 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 according to <31>, wherein the agent is applied in a stripe shape.
<33>
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>.
<34>
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>.
縦方向に折り返しながら横方向に延びる前記第4接着剤の連続線は、前記内層シートにおける前記内層折り返し部分となる予定の位置に、螺旋形を形成しながら横方向に延びており、横方向に延びる第4接着剤の連続線が、縦方向に複数列配されている、前記<26>に記載のパンツ型使い捨ておむつ。
<28>
前記内層折り返し部分及び前記内層シートは、接着剤配置部分においては、連続線を形成している前記第4接着剤により互いに固定されており、該第4接着剤で囲まれた部分は第4非接合部分となっており、互いに固定されていない、前記<26>又は<27>に記載のパンツ型使い捨ておむつ。
<29>
前記第4接着剤の連続線が縦方向に複数列配されており、縦方向に隣り合う該第4接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、前記<26>~<28>の何れか1に記載のパンツ型使い捨ておむつ。
<30>
前記外装体の前記腹側領域の両側縁部及び該外装体の前記背側領域の両側縁部に、前記内層シートと前記外層シートとが弾性部材固定用の第3接着剤を介して接合された一対の外側固定領域を有しており、
複数本の前記弾性部材が、一対の前記外側固定領域間に亘って配されており、該弾性部材は、一対の該外側固定領域それぞれにおいて、前記内層シートと前記外層シートとの間に前記第3接着剤によって固定されている一方、一対の該外側固定領域間においては、該内層シート及び該外層シートの何れにも固定されていない、前記<1>~<29>の何れか1に記載のパンツ型使い捨ておむつ。
<31>
前記股下領域において、前記外装体を構成する前記外層シート及び前記内層シートは、第6接着剤により接着されている、前記<1>~<30>の何れか1に記載のパンツ型使い捨ておむつ。
<32>
前記第6接着剤は、横方向に沿って複数本配され、が第6接着剤が、横方向に平行にパンツ型使い捨ておむつの全幅に亘って配されており、複数本の該第6接着剤がストライプ状に塗工されている、前記<31>に記載のパンツ型使い捨ておむつ。
<33>
前記弾性部材の収縮により、前記連続線を形成している前記第1接着剤で囲まれた前記肌側シート及び前記内層シートの第1非接合部分が膨らんで変形する、前記<1>~<32>の何れか1に記載のパンツ型使い捨ておむつ。
<34>
前記吸収体は、前記腹側領域から前記股下領域を通って前記背側領域にまで亘る下層吸収体と、該腹側領域から該股下領域にのみ亘る上層吸収体とを有している、前記<1>~<33>の何れか1に記載のパンツ型使い捨ておむつ。 <27>
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.
<28>
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.
<29>
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>.
<30>
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. <3> to <29>, wherein the sheet is fixed by three adhesives, but is not fixed to either the inner layer sheet or the outer layer sheet between 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 according to <31>, wherein the agent is applied in a stripe shape.
<33>
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>.
<34>
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>.
<35>
前記上層吸収体が、前記腹側領域から前記股下領域にのみ亘って配されており、高坪量部が、該腹側領域側に変位した位置に形成されている、前記<34>に記載のパンツ型使い捨ておむつ。
<36>
前記下層吸収体を構成する吸収性コアの坪量は、100g/m2以上1000g/m2以下であり、該下層吸収体を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下である、前記<34>又は<35>に記載のパンツ型使い捨ておむつ。
<37>
前記上層吸収体を構成する吸収性コアの坪量は、50g/m2以上500g/m2以下であり、該上層吸収体を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下である、前記<34>~<36>の何れか1に記載のパンツ型使い捨ておむつ。
<38>
前記内層シートが、前記背側領域において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された背側領域側の内層折り返し部分と、前記腹側領域において、該ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された腹側領域側の内層折り返し部分とを有している、前記<1>~<37>の何れか1に記載のパンツ型使い捨ておむつ。
<39>
前記内層折り返し部分を有する前記内層シートは、疎水性の繊維からなる疎水性不織布で形成されている、前記<38>に記載のパンツ型使い捨ておむつ。
<40>
前記疎水性不織布はスパンボンド不織布である、前記<39>に記載のパンツ型使い捨ておむつ。
<41>
前記内層シートを形成する前記スパンボンド不織布は、その坪量が、15g/m2以上19g/m2以下である、前記<40>に記載のパンツ型使い捨ておむつ。 <35>
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. Pants-type disposable diapers.
<36>
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 pants-type disposable diaper according to <34> or <35>, which is m 2 or less.
<37>
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.
<38>
In the back side region, the inner layer sheet is folded back to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening, and in the ventral region, Any one of the above <1> to <37>, further comprising an inner layer folded portion on the ventral region side folded to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening. Pants-type disposable diapers.
<39>
The pants-type disposable diaper according to <38>, wherein the inner layer sheet having the inner layer folded portion is formed of a hydrophobic nonwoven fabric made of hydrophobic fibers.
<40>
The pants-type disposable diaper according to <39>, wherein the hydrophobic nonwoven fabric is a spunbond nonwoven fabric.
<41>
The pants-type disposable diaper according to <40>, wherein the spunbonded nonwoven fabric forming the inner layer sheet has a basis weight of 15 g / m 2 or more and 19 g / m 2 or less.
前記上層吸収体が、前記腹側領域から前記股下領域にのみ亘って配されており、高坪量部が、該腹側領域側に変位した位置に形成されている、前記<34>に記載のパンツ型使い捨ておむつ。
<36>
前記下層吸収体を構成する吸収性コアの坪量は、100g/m2以上1000g/m2以下であり、該下層吸収体を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下である、前記<34>又は<35>に記載のパンツ型使い捨ておむつ。
<37>
前記上層吸収体を構成する吸収性コアの坪量は、50g/m2以上500g/m2以下であり、該上層吸収体を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下である、前記<34>~<36>の何れか1に記載のパンツ型使い捨ておむつ。
<38>
前記内層シートが、前記背側領域において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された背側領域側の内層折り返し部分と、前記腹側領域において、該ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された腹側領域側の内層折り返し部分とを有している、前記<1>~<37>の何れか1に記載のパンツ型使い捨ておむつ。
<39>
前記内層折り返し部分を有する前記内層シートは、疎水性の繊維からなる疎水性不織布で形成されている、前記<38>に記載のパンツ型使い捨ておむつ。
<40>
前記疎水性不織布はスパンボンド不織布である、前記<39>に記載のパンツ型使い捨ておむつ。
<41>
前記内層シートを形成する前記スパンボンド不織布は、その坪量が、15g/m2以上19g/m2以下である、前記<40>に記載のパンツ型使い捨ておむつ。 <35>
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. Pants-type disposable diapers.
<36>
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 pants-type disposable diaper according to <34> or <35>, which is m 2 or less.
<37>
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.
<38>
In the back side region, the inner layer sheet is folded back to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening, and in the ventral region, Any one of the above <1> to <37>, further comprising an inner layer folded portion on the ventral region side folded to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening. Pants-type disposable diapers.
<39>
The pants-type disposable diaper according to <38>, wherein the inner layer sheet having the inner layer folded portion is formed of a hydrophobic nonwoven fabric made of hydrophobic fibers.
<40>
The pants-type disposable diaper according to <39>, wherein the hydrophobic nonwoven fabric is a spunbond nonwoven fabric.
<41>
The pants-type disposable diaper according to <40>, wherein the spunbonded nonwoven fabric forming the inner layer sheet has a basis weight of 15 g / m 2 or more and 19 g / m 2 or less.
本発明によれば、肌触りが更に向上し、製品の品質が更に向上する。
According to the present invention, the touch is further improved and the quality of the product is further improved.
Claims (41)
- 着用者の腹側に配される腹側領域及び背側に配される背側領域とそれらの間に位置する股下領域とを有すると共に、該腹側領域から該股下領域を介して該背側領域に延びる縦方向とこれに直交する横方向とを有し、且つ液保持性の吸収体を含む吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体を固定している外装体とを備え、前記腹側領域及び前記背側領域それぞれにおける該外装体の縦方向に沿う両側縁部どうしが接合されて一対のサイドシール部、ウエスト開口部及び一対のレッグ開口部が形成されているパンツ型使い捨ておむつであって、
前記外装体は、前記パンツ型使い捨ておむつの非肌対向面を形成する外層シートと、該外層シートの肌対向面側に配される内層シートと、前記腹側領域及び前記背側領域の少なくとも一方において該内層シートの肌対向面側に配される肌側シートと、該外層シート及び該内層シートの間に横方向に伸長状態で配された複数本の弾性部材とを具備し、
前記外層シート及び前記内層シートは、隣り合う前記弾性部材の間に間欠的に配置された複数の融着部により互いに融着された部分を有しており、
前記肌側シートは、坪量17g/m2以下のスパンボンド不織布であり、
前記肌側シート及び前記内層シートは、第1接着剤により接着された部分を有しており、
前記第1接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している、パンツ型使い捨ておむつ。 A ventral region disposed on the ventral side of the wearer, a dorsal region disposed on the dorsal side, and a crotch region positioned therebetween, and the dorsal side from the ventral region through the crotch region 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. A pair of side seal portions, a waist opening portion, and a pair of legs joined to each other along the longitudinal direction of the exterior body in each of the ventral region and the dorsal region. A pants-type disposable diaper in which an opening is 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 A skin-side sheet disposed on the skin-facing surface side of the inner layer sheet, and a plurality of elastic members disposed in a laterally extended state between the outer layer sheet and the inner layer sheet,
The outer layer sheet and the inner layer sheet have portions fused to each other by a plurality of fused portions disposed intermittently 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 a portion bonded by a first adhesive,
The first adhesive is a pants-type disposable diaper that 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. - 前記肌側シートは、前記ウエスト開口部の周縁部から前記股下領域に向かって配されており、
前記外層シート及び前記内層シートを融着する前記融着部は、前記肌側シートが配された領域と重なる位置に配されており、
前記肌側シートの前記股下領域側の端部と、一対の前記サイドシール部の前記股下領域側の端部とで挟まれた領域と重なる位置では、前記外層シート及び前記内層シートは、第2接着剤により接着されており、
前記第2接着剤は、前記パンツ型使い捨ておむつを展開し且つ伸長させた状態を平面視して、縦方向に折り返しながら横方向に延びる連続線を形成している、請求項1に記載のパンツ型使い捨ておむつ。 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,
2. The pants according to claim 1, wherein the second adhesive forms a continuous line extending in a horizontal direction while being folded back in a vertical direction when the expanded and extended state of the pant-type disposable diaper is viewed in plan. Type disposable diaper. - 前記外層シート及び前記内層シートは、連続線を形成している前記第2接着剤により互いに固定されており、該第2接着剤で囲まれた部分は第2非接合部分となっており、互いに固定されていない、請求項2に記載のパンツ型使い捨ておむつ。 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 claim 2, which is not fixed.
- 折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に隣り合う前記第2接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、請求項2又は3に記載のパンツ型使い捨ておむつ。 In the state in which the outer layer sheet and the inner layer sheet before forming the folded portion are extended, the continuous lines of the second adhesive adjacent in the vertical direction do not overlap each other at the end in the vertical direction. Item 4. The pants-type disposable diaper according to item 2 or 3.
- 螺旋形を形成している前記第2接着剤の坪量は、前記第1接着剤の坪量よりも大きい、請求項2~4の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 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.
- 螺旋形を形成している前記第2接着剤の坪量は、2g/m2以上、10g/m2以下である、請求項2~5の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 2 to 5, wherein the basis weight of the second adhesive forming a spiral shape is 2 g / m 2 or more and 10 g / m 2 or less.
- 前記第2接着剤の連続線によって形成された螺旋形の幅は、前記第1接着剤の連続線の幅よりも大きい、請求項2~6の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 2 to 6, wherein a width of a spiral formed by the continuous line of the second adhesive is larger than a width of the continuous line of the first adhesive.
- 前記第2接着剤の連続線によって形成された螺旋形の幅は、10mm以上、20mm以下である、請求項2~7の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 2 to 7, wherein a width of a spiral formed by the continuous line of the second adhesive is 10 mm or more and 20 mm or less.
- 前記弾性部材の収縮により、前記連続線を形成している前記第2接着剤で囲まれた前記外層シート及び前記内層シートの第2非接合部分が膨らんで変形する、請求項2~8の何れか1項に記載のパンツ型使い捨ておむつ。 9. 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 by deformation of the elastic member. A pants-type disposable diaper according to claim 1.
- 前記弾性部材は、前記外装体における前記腹側領域の両側縁部及び前記背側領域の両側縁部にて、第3接着剤を介して前記外層シート及び前記内層シートに接着されており、
前記外装体の前記腹側領域の両側縁部及び前記背側領域の両側縁部は、隣り合う前記弾性部材の間に前記第3接着剤が配されていない部分を有する、請求項1~9の何れか1項に記載のパンツ型使い捨ておむつ。 The elastic member is bonded to the outer layer sheet and the inner layer sheet via a third adhesive at both side edges of the ventral region and both side edges of the back region in the exterior body,
The side edges of the ventral region and the side edges of the back region of the exterior body have portions where the third adhesive is not disposed between the adjacent elastic members. The underpants type disposable diaper of any one of these. - 前記肌側シートは、前記ウエスト開口部の周縁部から前記吸収性本体の前記背側領域側の端部を覆う位置まで延在している、請求項1~10の何れか1項に記載のパンツ型使い捨ておむつ。 The skin-side sheet according to any one of claims 1 to 10, wherein the skin-side sheet extends from a peripheral edge of the waist opening to a position that covers an end of the absorbent main body on the back-side region side. Pants-type disposable diaper.
- 前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し
前記内層折り返し部分の肌対向面と前記肌側シートとが固定されている、請求項1~11の何れか1項に記載のパンツ型使い捨ておむつ。 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 claims 1 to 11, wherein a skin facing surface of the skin and the skin side sheet are fixed. - 前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された内層折り返し部分を有し、
前記内層折り返し部分の非肌対向面と前記内層シートとが固定されている、請求項1~12の何れか1項に記載のパンツ型使い捨ておむつ。 The inner layer sheet has an inner layer folded portion 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 pants-type disposable diaper according to any one of claims 1 to 12, wherein a non-skin facing surface of the inner layer folded portion and the inner layer sheet are fixed. - 前記肌側シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って前記外層シートが前記内層シートの肌対向面側に折り返された外層折り返し部分である、請求項1~13の何れか1項に記載のパンツ型使い捨ておむつ。 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 claims 1 to 13, wherein
- 前記肌側シートは、前記背側領域に配された背側肌側シートと前記腹側領域に配された腹側肌側シートとを有し、
前記背側肌側シートは、前記ウエスト開口部の周縁部から前記吸収体の前記背側領域側の端部を覆う位置まで配され、
前記腹側肌側シートは、前記ウエスト開口部の周縁部から前記吸収体の前記腹側領域側の端部を覆う位置まで配されており、
前記吸収体は、前記背側肌側シートで覆われた該吸収体の前記背側領域側の端部の坪量が、前記腹側肌側シートで覆われた該吸収体の前記腹側領域側の端部の坪量よりも小さい、請求項1~14の何れか1項に記載のパンツ型使い捨ておむつ。 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.
In 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 claims 1 to 14, wherein the basis weight is smaller than the basis weight of the side end. - 前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し、
前記肌側シートは、縦方向において、前記内層折り返し部分よりも長く形成されている、請求項1~15の何れか1項に記載のパンツ型使い捨ておむつ。 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 pants-type disposable diaper according to any one of claims 1 to 15, wherein the skin-side sheet is formed longer in the longitudinal direction than the inner-layer folded portion. - 前記肌側シートは、スパンボンド不織布で形成されており、その坪量が、10g/m2以上、17g/m2以下である、請求項1~16の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable according to any one of claims 1 to 16, wherein the skin-side sheet is formed of a spunbonded nonwoven fabric and has a basis weight of 10 g / m 2 or more and 17 g / m 2 or less. Diapers.
- 前記肌側シートを含む前記外層シートはスパンボンド不織布で形成されており、
前記外層シートは捲縮長繊維の含有率が、30質量%以上、100質量%以下である、請求項1~17の何れか1項に記載のパンツ型使い捨ておむつ。 The outer layer sheet including the skin side sheet is formed of a spunbond nonwoven fabric,
The underpants-type disposable diaper according to any one of claims 1 to 17, wherein the outer layer sheet has a crimped long fiber content of 30% by mass or more and 100% by mass or less. - 前記肌側シートはスパンボンド不織布で形成されており、
前記肌側シートは、該前記肌側シートを構成する繊維の配向方向に直交する方向の破断強度が、7.0N/50mm以上、30.0N/50mm以下である、請求項1~18の何れか1項に記載のパンツ型使い捨ておむつ。 The skin side sheet is formed of a spunbond nonwoven fabric,
The skin-side sheet has a breaking strength in a direction perpendicular to an orientation direction of fibers constituting the skin-side sheet of 7.0 N / 50 mm or more and 30.0 N / 50 mm or less. A pants-type disposable diaper according to claim 1. - 前記肌側シートはスパンボンド不織布で形成されており、
前記肌側シートに用いる前記スパンボンド不織布は、その構成繊維を固着して該スパンボンド不織布を構成する複数の熱融着部を有し、該複数の熱融着部は、個々の面積が、0.3mm2以下である、請求項1~19の何れか1項に記載のパンツ型使い捨ておむつ。 The skin side sheet is formed of a spunbond nonwoven fabric,
The spunbond nonwoven fabric used for the skin-side sheet has a plurality of heat-sealed portions that constitute the spunbond nonwoven fabric by fixing its constituent fibers, and each of the plurality of heat-fused portions has an individual area, The pants-type disposable diaper according to any one of claims 1 to 19, which is 0.3 mm 2 or less. - 前記肌側シートはスパンボンド不織布で形成されており、
前記肌側シートに用いる前記スパンボンド不織布は、その一面の表面積に占める前記複数の熱融着部の合計面積の割合が、15%以下である、請求項1~20の何れか1項に記載のパンツ型使い捨ておむつ。 The skin side sheet is formed of a spunbond nonwoven fabric,
The spunbonded nonwoven fabric used for the skin-side sheet has a total area ratio of the plurality of heat-sealed portions occupying the surface area of one surface thereof of 15% or less. Pants-type disposable diapers. - 前記肌側シート及び前記内層シートは、接着剤配置部分においては、連続線を形成している前記第1接着剤により互いに固定されており、該連続線を形成している前記第1接着剤で囲まれた部分は第1非接合部分となっており、互いに固定されていない、請求項1~21の何れか1項に記載のパンツ型使い捨ておむつ。 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 the first adhesive forming the continuous line is used. The underpants-type disposable diaper according to any one of claims 1 to 21, wherein the enclosed portion is a first non-joined portion and is not fixed to each other.
- 折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に隣り合う前記第1接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、請求項1~22の何れか1項に記載のパンツ型使い捨ておむつ。 In a state where the outer layer sheet and the inner layer sheet before forming the folded portion are extended, 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. Item 23. The pants-type disposable diaper according to any one of Items 1 to 22.
- 螺旋形を形成している前記第1接着剤の坪量は、2g/m2以上、10g/m2以下である、請求項1~23の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 23, wherein a basis weight of the first adhesive forming a spiral shape is 2 g / m 2 or more and 10 g / m 2 or less.
- 螺旋形を形成している前記第1接着剤の連続線の幅は、10mm以上、20mm以下である、請求項1~24の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 24, wherein a width of a continuous line of the first adhesive forming a spiral shape is 10 mm or more and 20 mm or less.
- 前記内層シートは、前記腹側領域及び前記背側領域の少なくとも一方において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返される内層折り返し部分を有し、
前記内層折り返し部分と前記内層シートとが、第4接着剤により接着固定されており、
前記第4接着剤は、折り返し部分を形成する前の前記外層シート及び前記内層シートを伸長させた状態において、縦方向に折り返しながら横方向に延びる連続線を形成している、請求項1~25の何れか1項に記載のパンツ型使い捨ておむつ。 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 inner layer folded portion and the inner layer sheet are bonded and fixed by a fourth adhesive,
The fourth adhesive forms a continuous line extending in the lateral direction while being folded back in the vertical direction in a state where the outer layer sheet and the inner layer sheet are stretched before forming the folded portion. The underpants type disposable diaper of any one of these. - 縦方向に折り返しながら横方向に延びる前記第4接着剤の連続線は、前記内層シートにおける前記内層折り返し部分となる予定の位置に、螺旋形を形成しながら横方向に延びており、横方向に延びる該第4接着剤の連続線が、縦方向に複数列配されている、請求項26に記載のパンツ型使い捨ておむつ。 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 pants-type disposable diaper according to claim 26, wherein a plurality of continuous lines of the fourth adhesive extending are arranged in a vertical direction.
- 前記内層折り返し部分及び前記内層シートは、接着剤配置部分においては、連続線を形成している前記第4接着剤により互いに固定されており、該第4接着剤で囲まれた部分は第4非接合部分となっており、互いに固定されていない、請求項26又は27に記載のパンツ型使い捨ておむつ。 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 claim 26 or 27, wherein the pants-type disposable diapers are joined portions and are not fixed to each other.
- 前記第4接着剤の連続線が縦方向に複数列配されており、縦方向に隣り合う該第4接着剤の連続線どうしは、縦方向の端部において、互いに重なっていない、請求項26~28の何れか1項に記載のパンツ型使い捨ておむつ。 The continuous line of the fourth adhesive is arranged in a plurality of rows in the vertical direction, and the continuous lines of the fourth 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 items 28 to 28.
- 前記外装体の前記腹側領域の両側縁部及び該外装体の前記背側領域の両側縁部に、前記内層シートと前記外層シートとが弾性部材固定用の第3接着剤を介して接合された一対の外側固定領域を有しており、
複数本の前記弾性部材が、一対の前記外側固定領域間に亘って配されており、該弾性部材は、一対の該外側固定領域それぞれにおいて、前記内層シートと前記外層シートとの間に前記第3接着剤によって固定されている一方、一対の該外側固定領域間においては、該内層シート及び該外層シートの何れにも固定されていない、請求項1~29の何れか1項に記載のパンツ型使い捨ておむつ。 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. The pants according to any one of claims 1 to 29, wherein the pants are fixed by three adhesives, but are not fixed to either the inner layer sheet or the outer layer sheet between the pair of outer fixing regions. Type disposable diaper. - 前記股下領域において、前記外装体を構成する前記外層シート及び前記内層シートは、第6接着剤により接着されている、請求項1~30の何れか1項に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 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.
- 前記第6接着剤は、横方向に沿って複数本配され、該第6接着剤が、横方向に平行にパンツ型使い捨ておむつの全幅に亘って配されており、複数本の該第6接着剤がストライプ状に塗工されている、請求項31に記載のパンツ型使い捨ておむつ。 A plurality of the sixth adhesives are arranged along the horizontal direction, and the sixth adhesive is arranged over the entire width of the pants-type disposable diaper in parallel with the horizontal direction. The pants-type disposable diaper according to claim 31, wherein the agent is applied in a stripe shape.
- 前記弾性部材の収縮により、前記連続線を形成している前記第1接着剤で囲まれた前記肌側シート及び前記内層シートの第1非接合部分が膨らんで変形する、請求項1~32の何れか1項に記載のパンツ型使い捨ておむつ。 The first non-bonded portion of the skin side sheet and the inner layer sheet surrounded by the first adhesive forming the continuous line swells and deforms due to contraction of the elastic member. The pants-type disposable diaper according to any one of the above.
- 前記吸収体は、前記腹側領域から前記股下領域を通って前記背側領域にまで亘る下層吸収体と、該腹側領域から該股下領域にのみ亘る上層吸収体とを有している、請求項1~33の何れか1項に記載のパンツ型使い捨ておむつ。 The absorber includes 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. Item 34. The pants-type disposable diaper according to any one of Items 1 to 33.
- 前記上層吸収体が、前記腹側領域から前記股下領域にのみ亘って配されており、高坪量部が、該腹側領域側に変位した位置に形成されている、請求項34に記載のパンツ型使い捨ておむつ。 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. Pants-type disposable diaper.
- 前記下層吸収体を構成する吸収性コアの坪量は、100g/m2以上1000g/m2以下であり、該下層吸収体を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下である、請求項34又は35に記載のパンツ型使い捨ておむつ。 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 pants-type disposable diaper according to claim 34 or 35, wherein the pants-type disposable diaper is m 2 or less.
- 前記上層吸収体を構成する吸収性コアの坪量は、50g/m2以上500g/m2以下であり、該上層吸収体を構成するコアラップシートの坪量は、3g/m2以上20g/m2以下である、請求項34~36の何れか1項に記載のパンツ型使い捨ておむつ。 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 claims 34 to 36, which is m 2 or less.
- 前記内層シートが、前記背側領域において、前記ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された該背側領域側の内層折り返し部分と、前記腹側領域において、該ウエスト開口部の周縁部に沿って該内層シートの肌対向面側に折り返された該腹側領域側の内層折り返し部分とを有している、請求項1~37の何れか1項に記載のパンツ型使い捨ておむつ。 In the back side region, the inner layer folded portion on the back side region side that is folded back to the skin facing surface side of the inner layer sheet along the peripheral edge of the waist opening, and in the ventral region, The inner layer folded portion on the ventral region side that is folded on the skin-facing surface side of the inner layer sheet along the peripheral edge portion of the waist opening. Pants-type disposable diapers.
- 前記内層折り返し部分を有する前記内層シートは、疎水性の繊維からなる疎水性不織布で形成されている、請求項38に記載のパンツ型使い捨ておむつ。 The pants-type disposable diaper according to claim 38, wherein the inner layer sheet having the inner layer folded portion is formed of a hydrophobic nonwoven fabric made of hydrophobic fibers.
- 前記疎水性不織布はスパンボンド不織布である、請求項39に記載のパンツ型使い捨ておむつ。 40. The pants-type disposable diaper according to claim 39, wherein the hydrophobic nonwoven fabric is a spunbond nonwoven fabric.
- 前記内層シートを形成する前記スパンボンド不織布は、その坪量が、15g/m2以上19g/m2以下である、請求項40に記載のパンツ型使い捨ておむつ。 Wherein the spunbonded nonwoven fabric forming the inner layer sheet, the basis weight is 15 g / m 2 or more 19 g / m 2 or less, pants-type disposable diaper according to claim 40.
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