WO2021132292A1 - Article absorbant type culotte - Google Patents

Article absorbant type culotte Download PDF

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Publication number
WO2021132292A1
WO2021132292A1 PCT/JP2020/048064 JP2020048064W WO2021132292A1 WO 2021132292 A1 WO2021132292 A1 WO 2021132292A1 JP 2020048064 W JP2020048064 W JP 2020048064W WO 2021132292 A1 WO2021132292 A1 WO 2021132292A1
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WO
WIPO (PCT)
Prior art keywords
dorsal
absorbent
pants
absorbent article
exterior body
Prior art date
Application number
PCT/JP2020/048064
Other languages
English (en)
Japanese (ja)
Inventor
光佑 有田
藍子 恩田
亮太 蔵前
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN202080089842.2A priority Critical patent/CN114901229A/zh
Publication of WO2021132292A1 publication Critical patent/WO2021132292A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • 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
    • 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
    • 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
    • A61F13/53—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 absorbing medium
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A61F13/536—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression

Definitions

  • the present invention relates to pants-type absorbent articles such as pants-type disposable diapers.
  • Pants-type disposable diapers whose main members are the ventral panel, the dorsal panel, and the crotch panel are known.
  • This type of diaper has the advantage that the leg can be largely secured in the crotch, so that the wearer can easily move his / her legs and the appearance in the worn state becomes neat.
  • the buttocks are easily exposed, and the covering property is not sufficient. Therefore, it has been proposed to arrange an elastic member extending in the lateral direction to provide a stretchable portion on the dorsal panel to improve the covering property of the buttocks (see Patent Documents 1 and 2).
  • Patent Document 3 in a disposable diaper provided with an absorber composed of two layers of an upper layer absorber and a lower layer absorber, the upper layer absorber is composed of pulp and an absorbent polymer, and the lower layer absorber is placed between two sheets. It is described that it is composed of an absorbent polymer arranged therein.
  • the present invention relates to a pants-type absorbent article.
  • the absorbent article is between the ventral exterior body arranged on the ventral side of the wearer, the dorsal exterior body arranged on the back side of the wearer, and the ventral exterior body and the dorsal exterior body. It is provided with an absorbent body fixed to these exterior bodies so as to bridge over.
  • the absorbent article has a longitudinal direction extending between the ventral exterior body and the dorsal exterior body and a lateral direction orthogonal to the longitudinal direction, and both sides of the ventral exterior body and the dorsal exterior body. It is provided with a side seal portion formed by joining the edges.
  • the absorbent body comprises an absorber having an absorbent sheet with two identical or different fiber sheets and absorbent polymer particles arranged between the fiber sheets.
  • the dorsal exterior body includes a dorsal extending portion extending downward from the lower end of the side sealing portion.
  • the dorsal extension portion includes a dorsal stretchable region that can be expanded and contracted along the lateral direction, and when the absorbent article is viewed along the longitudinal direction, the dorsal stretchable region and the absorber are formed.
  • the absorber comprises an auxiliary layer overlapping the absorbent sheet in the lateral central region.
  • the central region has a higher rigidity than the side region adjacent to the central region.
  • FIG. 1 is a perspective view schematically showing a natural state of a pants-type disposable diaper, which is an embodiment of the pants-type absorbent article of the present invention.
  • FIG. 2 is a developed plan view schematically showing the skin-facing surface side of the diaper shown in FIG. 1 in the unfolded and stretched state.
  • FIG. 3 is an exploded perspective view schematically showing the skin-facing surface side of the diaper shown in FIG. 1 in the unfolded and stretched state.
  • FIG. 4 is a cross-sectional view schematically showing an I-I line cross section on the vertical center line CLx of FIG. 2 in the wearing state of the diaper shown in FIG. 5 (a) is a cross-sectional view schematically showing a cross section taken along line II-II of FIG.
  • FIG. 6 is a cross-sectional view schematically showing a cross section along the thickness direction of one embodiment of an absorbent sheet that can be used as an absorber according to the present invention.
  • FIG. 7 is a schematic perspective view of the absorbent sheet shown in FIG.
  • FIG. 8 is a schematic enlarged view illustrating another arrangement form of the auxiliary layer.
  • FIG. 9 is a schematic enlarged view illustrating the configuration of a modified example of the auxiliary layer.
  • FIG. 10 is a schematic enlarged view illustrating the configuration of an auxiliary layer provided with a low-rigidity portion.
  • FIG. 11 is a schematic view illustrating the configuration of pants-type absorbent articles having different configurations of the dorsal exterior body.
  • FIG. 12 is a diagram illustrating the configuration of pants-type absorbent articles having different configurations of the dorsal exterior body.
  • the absorber is arranged in the vicinity of the leg roll in the wearing state, and the absorber is easily deformed due to the movement of the wearer.
  • the deformed absorber may enter the buttocks, leading to deterioration of the wearing appearance, wearing discomfort, and liquid leakage.
  • a thin absorber as described in Patent Document 3 is adopted, the absorber is significantly deformed due to the low rigidity of the absorber.
  • the present invention relates to a pants-type absorbent article that prevents deformation of the absorbent body without impairing the good fit of the thin absorbent body and exhibits an excellent appearance when worn.
  • FIG. 2 show a pants-type diaper 1 which is an embodiment of the disposable diaper of the present invention.
  • the diaper 1 has a vertical direction X corresponding to the front-back direction of the wearer and a horizontal direction Y orthogonal to the vertical direction X.
  • the diaper 1 has a crotch portion C and a ventral side portion A and a dorsal side portion B extending in the longitudinal direction X from the front and back of the crotch portion C.
  • the diaper 1 extends in the vertical direction X from the ventral side A to the dorsal side B.
  • the "anterior-posterior direction of the wearer” is a direction extending between the ventral side and the dorsal side of the wearer via the inseam.
  • the inseam C is a portion arranged in the crotch of the wearer when the diaper 1 is worn.
  • the ventral portion A is a portion arranged on the ventral side of the wearer, that is, on the anterior side of the inseam C when the diaper 1 is worn.
  • the dorsal portion B is a portion arranged on the dorsal side, that is, the posterior side of the wearer with respect to the inseam C when the diaper 1 is worn.
  • Diaper 1 has a vertical center line CLx located in the center of the vertical direction X.
  • the vertical center line CLx is a virtual straight line that bisects the unfolded and stretched diaper 1 in the vertical direction X and extends in the horizontal direction Y as shown in FIG.
  • the "expanded and stretched state" of the diaper 1 means that the diaper 1 is separated from the side seal portion described later to be in the deployed state, and the diaper 1 in the deployed state is stretched with the elastic members of each part to design dimensions (the influence of the elastic members). It refers to the state in which it is unfolded until it becomes the same as the dimensions when it is unfolded in a plane with all removed.
  • the diaper 1 includes an absorbent main body 2 and an exterior body 30.
  • the exterior body 30 includes outer layer sheets 31 and 32 and inner layer sheets 33 and 34 from the non-skin facing surface side toward the skin facing surface side.
  • the outer layer sheet 31 and the inner layer sheet 33 are joined to each other to form a ventral exterior body 3A arranged on the ventral side of the wearer, and the outer layer sheet 32 and the inner layer sheet 34 are joined to each other to form the dorsal side of the wearer. It constitutes the dorsal exterior body 3B to be arranged.
  • the outer layer sheets 31 and 32 are elastic sheets.
  • the outer layer sheets 31 and 32 form the outer surface of the diaper 1, that is, the non-skin facing surface, at least on the ventral side A and the dorsal side B.
  • the inner layer sheets 33 and 34 are non-stretchable sheets.
  • the outer layer sheets 31 and 32 are joined to the inner layer sheets 33 and 34 in a state of being extended in the lateral direction Y, respectively, by a known joining means such as an adhesive.
  • the diaper 1 is a pair formed by joining both side edges AS and BS of the ventral exterior body 3A and the dorsal exterior body 3B to each other by known bonding means such as an adhesive, a heat seal, and an ultrasonic seal.
  • the side seal portions S and S are provided.
  • the diaper 1 has a waist opening WH through which the wearer's torso is passed by joining the ventral exterior body 3A and the dorsal exterior body 3B at the side seal portions S and S.
  • It is a pants-type absorbent article in which a pair of leg openings LH and LH through which the wearer's lower limbs are passed are formed.
  • the "skin facing surface” is a surface of the diaper 1 which is an absorbent article or a component thereof (for example, an absorbent main body), which is directed toward the skin side of the wearer when the diaper 1 is worn, that is, relatively worn.
  • the side closer to the skin of the person, and the "non-skin facing surface” is directed to the side of the diaper 1 or its constituent members opposite to the skin side when the diaper 1 is worn, that is, the side relatively far from the wearer's skin. It is a surface to be diapered.
  • the term "when worn” as used herein means a state in which the normal proper wearing position, that is, the correct wearing position of the absorbent article is maintained, and the absorbent article is in a state deviated from the wearing position. Does not include.
  • the ventral exterior 3A and the dorsal exterior 3B are divided in the vertical direction X, and these exteriors are bridged between the ventral exterior 3A and the dorsal exterior 3B. It is provided with an absorbent body 2 fixed to. As shown in FIG. 2, the absorbent main body 2 has a rectangular shape in a plan view, and its longitudinal direction coincides with the vertical direction X of the diaper 1, and the lateral direction of the ventral exterior body 3A and the dorsal exterior body 3B. It is arranged in the central part of Y and extends in the vertical direction X from the ventral side A to the dorsal side B.
  • the extending portions 33a and 34a formed on the inner layer sheets 33 and 34 are folded back toward the skin facing surface side, covered with both ends 2A and 2B located in the vertical direction X, and joined to the inner layer sheets 33 and 34. As a result, it is fixed to the ventral exterior body 3A and the dorsal exterior body 3B.
  • the ventral exterior body 3A and the dorsal exterior body 3B are a plurality of thread-like or band-shaped waist elastic members 41, 41 arranged in an extended state between the outer layer sheet 31, the inner layer sheet 33, and the outer layer sheet 32 and the inner layer sheet 34.
  • Each has.
  • a plurality of waist elastic members 41 are extended in the lateral direction Y in the opening end of the wearer's waist opening WH and the region in the vicinity thereof.
  • they are intermittently arranged at predetermined intervals in the vertical direction X.
  • the waist elastic member 41 extends outward in the same direction from the edge of the absorbent body 2 in the vertical direction X between the side seal portions S along the vertical direction X in each of the ventral side portion A and the dorsal side portion B. It is arranged in the area where it was put out. Such an area corresponds to the wearer's waist circumference and its vicinity in the wearing state.
  • the waist elastic member 41 is arranged in a state in which elastic elasticity is exhibited over substantially the entire length of the exterior body 30 in the lateral direction Y. As a result, a substantially continuous annular waist gather WG is formed over the entire circumference of the waist opening WH.
  • the waist circumference gather includes a ventral exterior body 3A and a dorsal exterior body 3B, and a plurality of elastic members 42 for forming waist circumference gathers fixed to the ventral exterior body 3A and the dorsal exterior body 3B.
  • the elastic member 42 is arranged in a region overlapping the absorber 5 in the horizontal direction Y when the diaper 1 is viewed along the vertical direction X.
  • the elastic member 42 extends in the horizontal direction Y and is arranged intermittently in the vertical direction X on the ventral exterior body 3A and the dorsal exterior body 3B.
  • the elastic member 42 is a plurality of thread-like or strip-shaped elastic members arranged in an extended state between the outer layer sheets 31 and 32 and the inner layer sheets 33 and 34.
  • the waist circumference gather BG is formed by fixing the elastic member 42 to the dorsal exterior body 3B in a state of being extended in the lateral direction Y, and then releasing the elastic member 42 from the extended state.
  • the elastic member 42 contracts to form a gathered BG around the waist in a region below the waist gathered WG.
  • the elastic region in which the waist circumference gather BG is formed in the ventral side A of the diaper 1 is also referred to as “abdominal elastic region X2”.
  • the dorsal exterior body 3B includes a dorsal extending portion 39 extending from the lower end Sa of the side seal portion S toward the lower crotch C where the vertical center line CLx is located. ing.
  • the dorsal extension 39 has a dorsal stretchable region X1 that can be stretched along the lateral direction Y.
  • the dorsal extending portion 39 is formed with curved portions 39a and 39b that are curved so that the length in the lateral direction Y gradually becomes shorter toward the lower crotch portion C.
  • the curved portions 39a and 39b are formed from the side edges 39c and 39d of the dorsal extending portion 39 located in the lateral direction Y toward the ends 39e and 39f located on the central side.
  • the width W in the lateral direction Y from the end 39e to the end 39f is formed wider than the width W1 in the lateral direction Y of the absorbent main body 2, and the absorbent main body 2 is formed laterally from the dorsal extending portion 39. It is designed so that it does not protrude into Y.
  • the dorsal telescopic region X1 includes leg elastic members 43, 43 arranged in an extended state so as to draw a curve along the circumference of the wearer's legs.
  • the leg elastic members 43, 43 are arranged in an extended state between the inner layer sheet 34 and the outer layer sheet 32, and are composed of a plurality of thread-like or band-shaped elastic members.
  • the dorsal expansion / contraction region X1 can be expanded / contracted along the lateral direction Y by these leg elastic members 43, 43.
  • the leg elastic members 43, 43 are arranged along the curved portions 39a, 39b of the dorsal extending portion 39.
  • the outer ends 43a, 43a of the leg elastic members 43, 43 are located on the side edges 39c, 39d of the dorsal extending portion 39, and the inner ends 43b, 43b of the leg elastic members 43, 43 are closer to the ends 39e, 39f. Is located in.
  • the inner ends 43b and 43b are arranged so as not to reach the central region 5A of the absorber 5 included in the absorbent body 2.
  • the leg elastic members 43 and 43 are formed so as not to be arranged in the central region 5A of the absorber 5, but when the leg elastic members 43 and 43 are arranged up to the central region 5A, the elasticity is increased. It is preferable to arrange in such a manner that it does not appear.
  • the absorbent body 2 is a liquid-permeable surface sheet 3 arranged at a position relatively close to the wearer's skin, and is arranged at a position relatively far from the wearer's skin. It is composed of a liquid-impermeable or liquid-impermeable or water-repellent (that is, leak-proof) back surface sheet 4, and an absorber 5 interposed between the front surface sheet 3 and the back surface sheet 4.
  • the absorber 5 includes an absorbent sheet 51, an auxiliary layer 52 that overlaps the absorbent sheet 51, and a core wrap sheet (not shown) that covers the outer surfaces of the absorbent sheet 51 and the auxiliary layer 52. There is.
  • These members constituting the absorbent main body 2 are integrated by a known joining means such as an adhesive.
  • a known joining means such as an adhesive.
  • those normally used in this type of absorbent article may be used without particular limitation on the premise that the members are in accordance with the description described later. it can.
  • the surface sheet 3 traverses the skin-facing surface side of the absorber 5 (a pair of first standing portions 50 and non-standing portions 55, which will be described later) in the lateral direction Y, and extends in the vertical direction X of the absorber 5 in the surface sheet 3.
  • the extending portions 3E from both side edges (a pair of first standing portions 50, 50) are wound around the non-skin facing surface side of the absorber 5.
  • the pair of extending portions 3E and 3E of the surface sheet 3 are formed by the absorber 5 and the leak-proof cuff forming sheet 80 described later at the base end portion 81 of the leak-proof cuff 8 described later, respectively. It is fixed in between.
  • the surface sheet 3 does not cover the entire non-skin facing surface of the absorber 5, and is located at the center of the non-skin facing surface of the absorber 5 in the lateral direction Y (between the pair of base end portions 81, 81). The portion) is not covered with the surface sheet 3 (extending portion 3E).
  • a pair of leak-proof cuffs 8 and 8 and a pair of leg circumference gathers 90 and 90 are arranged on both sides of the absorbent body 2 (absorbent body 5) along the vertical direction X, respectively.
  • the pair of leak-proof cuffs 8 and 8 and the pair of leg gathers 90 and 90 do not overlap the central region 5A in the lateral direction, and extend in the vertical direction X in the lateral region (5B) adjacent to the central region 5A. doing.
  • the leg circumference gathers 90, 90 are arranged outside the pair of leak-proof cuffs 8, 8 in the lateral direction Y. More specifically, the leg circumference gathers 90 and 90 include a plurality of leg circumference elastic members 91 extending in the vertical direction X.
  • the leg circumference elastic member 91 is included in the seat 92 in an extended state so as to extend in the vertical direction X through the crotch portion C.
  • the sheet 92 is joined to the absorber 5 side via an adhesive member, and constitutes the main body first expansion / contraction areas 90 and 90 as leg gathers.
  • the first expansion and contraction areas 90 and 90 of the main body can be expanded and contracted by arranging the elastic members 91 and 91 around the legs in an extended state.
  • the leg-surrounding elastic members 91 and 91 are composed of a plurality of thread-like or band-shaped elastic members.
  • Each of the leak-proof cuffs 8 is configured to include a liquid-resistant or water-repellent and breathable leak-proof cuff forming sheet 80, and the sheet 80 is folded in two in the lateral direction Y. It contains a layered part.
  • Each leak-proof cuff 8 (leak-proof cuff forming sheet 80) is continuously arranged along the side portion of the absorbent body 2 along the vertical direction X over substantially the entire length of the absorbent body 2 in the vertical direction X.
  • the leak-proof cuff forming sheet 80 those used as the material of the leak-proof cuff in this type of absorbent article can be used without particular limitation.
  • a single-layer or multi-layer water-repellent non-woven fabric or a resin film can be used.
  • a laminate material such as a non-woven fabric and the like can be used.
  • the leak-proof cuff 8 has a base end portion 81 in which the leak-proof cuff forming sheet 80 is fixed to another member, and a second standing portion 82 in which the sheet 80 stands up on the wearer side.
  • the second standing portion 82 is a non-fixed portion of the leak-proof cuff forming sheet 80 with other members.
  • the base end portion 81 is a portion that serves as a standing base end when the second standing portion 82 stands up toward the wearer's skin side when the diaper 1 is worn, and the leak-proof cuff forming sheet 80 is a hot melt or the like. It is a portion fixed to another member, specifically, the absorbent main body 2 and / or the exterior body 30 by a known fixing means such as an adhesive or heat fusion of the above.
  • the base end portion 81 extends continuously or discontinuously in the vertical direction X over substantially the entire length of the leak-proof cuff forming sheet 80 in the vertical direction X.
  • the second standing portion 82 is partially elastic in the vertical direction X.
  • the first elastic member for forming a leak-proof cuff (hereinafter referred to as "the first elastic member") 83 is arranged so as to extend in the vertical direction X, and is also based on the free end portion of the second standing portion 82.
  • a second elastic member for forming a leak-proof cuff (hereinafter referred to as "second elastic member") 84 is arranged at an intermediate position with the end portion 81 so as to extend in the vertical direction X.
  • the first and second elastic members 83 and 84 are fixed between the leak-proof cuff forming sheets 80 and 80 forming the two-layer structure in an extended state by a fixing means such as an adhesive.
  • the second standing portions 82, 82 have elasticity in the vertical direction X at the fixed portions of the first and second elastic members 83, 84. That is, the absorbent main body 2 extends in the vertical direction X inside the main body first stretchable area 90 and the main body first stretchable area 90 in the horizontal direction Y, and can stand up toward the wearer's body.
  • a second standing portion 82 is provided.
  • the first expansion / contraction region 90 of the main body and the second upright portion 82 which is the second expansion / contraction region, extend beyond the end portion of the auxiliary layer 52 on the dorsal exterior body side (hereinafter referred to as “dorsal end portion 52d”). ..
  • the end portion of the second upright portion 82 in the dorsal side portion in the vertical direction X may be arranged so as to exist in the vicinity of the dorsal side end portion 52d.
  • the end portion of the main body first expansion / contraction region 90 in the dorsal side portion in the vertical direction X may be arranged so as to exist in the vicinity of the dorsal side end portion 52d. This vicinity is, for example, a region within ⁇ 10 mm from the dorsal end portion 52d of the auxiliary layer 52.
  • standing-inhibiting portions 85 which are portions in which the standing of the leak-proof cuff forming sheet 80 is inhibited, are formed at both ends of the leak-proof cuff 8 in the vertical direction X.
  • the standing inhibition portion 85 is formed on the ventral side portion A and the dorsal side portion B, and the portion sandwiched between the standing inhibition portions 85 and 85 is the second standing portion 82.
  • the standing inhibition portion 85 is formed by fixing the leak-proof cuff forming sheet 80 to the skin-facing surface (surface sheet 3) of the absorbent main body 2.
  • the fixing portion can be formed by using an adhesive such as hot melt or a known fixing means such as heat fusion.
  • the number of the first and second elastic members 83 and 84 is not particularly limited, and may be one or a plurality of each.
  • the second elastic member 84 (an elastic member arranged at an intermediate position between the free end portion and the base end portion 81 in the second standing portion 82) may not be provided.
  • the pair of standing-inhibiting portions 85 and 85 are formed at both ends of the leakage-proof cuff 8 in the vertical direction X, they are sandwiched between the standing-inhibiting portions 85 and 85 when the diaper 1 is worn.
  • the second upright portion 82 which is a portion, wears the base end portion 81 as the upright base end as shown in FIGS. 5A and 5B due to the contraction force of the first and second elastic members 83 and 84. Stand up toward the person's skin.
  • the upright second upright portion 82 blocks the outward movement of body fluid such as urine excreted by the wearer in the lateral direction Y, so that the absorber 5 described later In combination with the effect of blocking the body fluid by the pair of first standing portions 50, 50 on both sides in the lateral direction Y, lateral leakage is effectively suppressed.
  • the contraction force of the first and second elastic members 83 and 84 causes the entire diaper 1 to have a non-skin facing surface in the central region 5A of the absorbent body 2 in the vertical direction X.
  • the diaper 1 Since the diaper 1 is curved and deformed so as to be convex toward the side (back surface sheet 4 side), the diaper 1 can easily fit the wearer's body shape. Further, since the second standing portion 82 extends beyond the dorsal end portion 52d of the auxiliary layer 52, the second standing portion 82 can be reliably erected, which is preferable.
  • the absorber 5 is located at least in the inseam C with the central region 5A in the lateral direction Y of the absorber 5 sandwiched between the bilateral regions 5B and 5B, and is a pair of first elements that stand up toward the wearer's skin side when worn. It has one standing portion 50, 50 and a non-standing portion 55 located in the central region 5A and sandwiched between a pair of first standing portions 50, 50.
  • a side elastic member 9 for erecting the first standing portion 50 is arranged.
  • the side elastic member 9 is arranged between the surface sheet 3 and the core wrap sheet. That is, as shown in FIGS. 4 and 5, a pair of first standing portions 50, 50 extending in the vertical direction X are formed on both sides of the absorbent body 2.
  • the first standing portions 50, 50 extend beyond the dorsal end portion 52d of the auxiliary layer 52.
  • the side elastic member 9 is arranged between the absorbent sheet 51 and the surface sheet 3 in a state of being extended in the vertical direction X, and is at least on the absorbent sheet 51, further on the surface sheet 3, an adhesive or the like. It is fixed by a known fixing means of.
  • the side elastic members 9 are arranged at least in the lower crotch C, and may be one or a plurality of side elastic members 9 as shown in the drawing.
  • the first standing portions 50, 50 and the second standing portions 82 do not necessarily have to exceed the dorsal end portion 52d of the auxiliary layer 52, and if they extend to at least the vicinity of the dorsal end portion 52d, the first standing portion 50, 50 and the second standing portion 82 are the first. 1 Standing portions 50, 50 and 2 standing portions 82, 82 can be sufficiently raised.
  • the term "neighborhood” as used herein refers to the edge position of the first standing portion 50 (the edge position of the side elastic member 9) and the edge position of the second standing portion 82 (first and second elasticity) in the vertical direction X.
  • the term "neighborhood” refers to a range of up to ⁇ 35 mm for the first standing portions 50 and 50 and ⁇ 10 mm for the second standing portion 82 as described above when the dorsal end portion 52d is set as the reference position in the vertical direction. Refers to the range up to.
  • the side elastic members 9 which are the first expansion and contraction regions 90 of the main body are fixed to both sides of the absorber 5 in the lateral direction Y in the extended state, so that the absorption is absorbed when the diaper 1 is worn.
  • Both side portions of the body 5 in the lateral direction Y stand up toward the skin side of the wearer as a pair of first standing portions 50, 50 due to the contraction of the side elastic members 9.
  • This standing is further promoted by the standing of the second standing portion 82, which is the second expansion / contraction region.
  • the absorber 5 has a non-standing portion 55 as a bottom in a cross-sectional view along the lateral direction Y as shown in FIG. 5, and a pair of first standing portions 50, 50 extending obliquely from the bottom toward the wearer's skin side. It forms a tray with the side part.
  • various known elastic materials usually used for this kind of absorbent article can be used without particular limitation as materials for various elastic members in the diaper 1, including the side elastic member 9.
  • examples thereof include synthetic rubbers such as styrene-butadiene, butadiene, isoprene and neoprene, natural rubbers, EVA, elastic polyolefins and polyurethanes.
  • a thread-like (thread rubber, etc.) or string-like (flat rubber, etc.) having a rectangular, square, circular, or polygonal cross section, or a multifilament type thread-like member is preferably used. it can.
  • the auxiliary layer 52 of the absorber 5 is laminated on the absorbent sheet 51.
  • the auxiliary layer 52 has a rectangular shape in a plan view, and is arranged in the center of the absorbent sheet 51 in the horizontal direction Y so that the long side is along the vertical direction X, so that the auxiliary layer 52 is within the central region 5A of the absorber 5. Have been placed.
  • the auxiliary layer 52 is arranged in a region where the dorsal expansion / contraction region X1 and the absorber 5 overlap in the horizontal direction Y when the diaper 1 is viewed along the vertical direction X.
  • the absorber 5 has a multi-layer structure in which the central region 5A provided with the auxiliary layer 52 is laminated with the absorbent sheet 51 and the auxiliary layer 52, and is adjacent to the central region 5A.
  • the side regions 5B and 5B have a single-layer structure with the absorbent sheet 51 alone.
  • the auxiliary layer 52 has the same thickness and the same density (basis weight) in the vertical direction X and the horizontal direction Y. Therefore, the central region 5A of the absorber 5 is more rigid than the side regions 5B and 5B by the amount of the auxiliary layer 52.
  • Rigidity is a physical characteristic value measured by a hand rometer testing machine (manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd.).
  • the absorber 5 does not have to be a single layer as long as the side region 5B has a lower rigidity than the central region 5A.
  • the central region 5A has three layers and the side region 5B has two layers. You may.
  • the auxiliary layer 52 may have a structure in which the densities are not the same as described above but are partially different.
  • the outer body is divided into the ventral outer body 3A and the dorsal outer body 3B, and the inseam C is an absorbent main body using a thin absorbent sheet 51. Since 2 is arranged, the wearer can easily move his / her legs and the fit is good. Further, the back side exterior body 3B is formed with a back side extension portion 39 extending downward from the lower end Sa of the side seal portion S and having a back side expansion / contraction region X1 that can be expanded / contracted along the lateral direction Y. Therefore, along with the fit (coverage) around the buttocks, the appearance in the worn state becomes like underwear, and exhibits an excellent appearance.
  • an auxiliary layer 52 is arranged in the central region 5A of the absorber 5 located in the lower crotch C in the lateral direction Y, which is a portion where the absorber 5 is easily deformed due to the movement of the wearer, and the central region 5A.
  • the auxiliary layer 52 when the auxiliary layer 52 is arranged in the central region 5A (non-standing portion 55) in the lateral direction Y, the bending starting point when the pair of first standing portions 50 stand up is in the lateral direction Y of the auxiliary layer 52. It can be formed by the corners 52a1, 52b1 of the side edges 52a, 52b located. Further, it is preferable that the positions of the side edges 52a and 52b and the base end portion 81 are the same at least in the crotch portion C when viewed along the lateral direction Y. For this reason, the pair of first standing portions 50 are lifted at the inseam C during mounting, and the standing operation can be performed more reliably, so that the fit is improved.
  • first standing portions 50 extends beyond the dorsal end portions 52d located on the dorsal exterior body 3B side of the auxiliary layer 52, the first standing portions 50 are lifted at the crotch portion C.
  • the fit is improved because the standing motion can be performed more reliably.
  • the length of the dorsal extending portion 39 in the lateral direction becomes shorter as it goes downward, so that the dorsal extending portion 39 in the inseam C feels stiff. Therefore, the comfort of the wearer is further improved, and the appearance in the worn state becomes like underwear, and the appearance is excellent.
  • the diaper 1 of the present embodiment since the dorsal expansion / contraction region X1 can be expanded / contracted by the leg elastic member 43, the feeling of stiffness of the dorsal extension 39 in the inseam C can be further reduced. Therefore, the appearance when worn becomes like underwear, and exhibits an excellent appearance. Further, since the leg elastic member 43 is not arranged in the central region 5A of the absorber 5, the contraction action on the central region 5A can be reduced, so that the deformation of the absorber 5 (absorbent sheet 51) in the central region 5A is suppressed. It is preferable in that it does.
  • the auxiliary layer 52 is preferably composed of a mixed product fiber containing at least a water-absorbent natural fiber and an absorbent polymer.
  • the mixed fiber may consist of, for example, only water-absorbent natural fibers and absorbent polymers, or may contain other materials, such as synthetic fibers, in addition to the water-absorbent natural fibers and absorbent polymers.
  • the auxiliary layer 52 has a length L from the dorsal end 52d to the ventral end 52c on the opposite side from the one side edge 52a located in the lateral direction Y to the other side. It is formed longer than the length L1 up to the edge 52b.
  • the dorsal end 52d is located substantially in the center of the dorsal expansion / contraction region X1 of the dorsal extension 39 in the vertical direction X, and the ventral end 52c is near the vertical center line CLx. It is arranged on the absorbent sheet 51 so as to be located.
  • the buttock of the wearer Since the buttock of the wearer is located closer to the dorsal exterior body 3B when the diaper is worn, if the auxiliary layer 52 is arranged at the position shown in FIG. 2, the buttock of the wearer in the absorber 5 In particular, the rigidity of the part corresponding to the intergluteal cleft and its vicinity can be increased. As a result, it is possible to reduce the possibility of deterioration of the wearing appearance, wearing discomfort, liquid leakage, and the like.
  • the lower end Sa and the dorsal side of the side seal portion S which is the start position of the dorsal expansion / contraction region X1.
  • the position of the end portion 52d may be aligned along the vertical direction X.
  • the length L (total length) of the auxiliary layer 52 is preferably at least the length of the dorsal expansion / contraction region X1 or more.
  • the auxiliary layer 152 shown in FIG. 9 is arranged in the central region 5A in the lateral direction Y of the absorbent sheet 51.
  • the auxiliary layer 152 has a substantially rectangular shape extending from the dorsal exterior body 3B to the ventral exterior body 3A, and a widening portion 153 is formed on the ventral end portion 152c side.
  • the auxiliary layer 152 is absorbent so that the dorsal end 152d overlaps the dorsal expansion and contraction area X1 of the dorsal exterior body 3B and the widening portion 153 overlaps the abdominal expansion and contraction area X2 of the ventral exterior body 3A in a plan view. It is fixed to the seat 51.
  • the widening portion 153 is a portion where the length in the lateral direction Y increases from the dorsal exterior body 3B toward the ventral exterior body 3A, and the width L2 is formed longer than the width L1 of the dorsal end portion 152d. Has been done.
  • the widening portion 153 is formed with end faces 153a and 153b located in the lateral direction Y as inclined surfaces so that the length in the lateral direction Y continuously increases for the purpose of following the outer shape of the leg when mounted. There is.
  • This inclined portion is arranged so as to overlap the lower end edge 3Aa of the ventral exterior body 3A in a plan view.
  • the widening portion 153 may be in a form in which the length in the lateral direction Y is not continuously increased, but may be in a form in which the length is gradually increased.
  • the end faces 152a and 152b of the auxiliary layer 152 other than the widening portion 153 extend in the vertical direction X in a plan view, and the widths of the end faces 152a and 152b substantially coincide with the width L1 of the dorsal end portion 152d.
  • the auxiliary layer 152 has a length extending from the dorsal exterior body 3B to the ventral exterior body 3A, so that the rigidity of the absorber 5 in the entire vertical direction X of the inseam C can be increased. It is preferable because it can be done. Further, since the widening portion 153 formed so as to continuously increase the length in the lateral direction Y is arranged on the ventral exterior body 3A side, the liquid absorption capacity of the absorber 5 on the ventral side can be secured. Therefore, it is preferable.
  • the widening portion 153 Since the widening portion 153 has end faces 153a and 153b inclined so as to overlap the lower end edge 3Aa of the ventral exterior body 3A, the widening portion 153 deforms along the appearance of the leg when the diaper is worn. For this reason, the fit when worn is improved and the wearer can easily move his / her feet.
  • the auxiliary layer 152 overlaps the dorsal expansion / contraction area X1 of the dorsal exterior body 3B in a plan view (thickness direction), and the widening portion 153 overlaps the waist circumference expansion / contraction area X2 of the ventral exterior body 3A. It is preferable because the fit is improved.
  • the auxiliary layer 52 has the same thickness and the same density (basis weight) in the vertical direction X and the horizontal direction Y, and extends in the vertical direction X as shown in FIG.
  • the auxiliary layer 52 may have a low-rigidity portion 521 having a lower rigidity than the other portions.
  • the low-rigidity portion 521 is a groove-shaped recess recessed from the auxiliary layer 52 toward the absorbent sheet 51, extends along the vertical direction X in the central region of the absorber 5, and is arranged in the horizontal direction Y. It is a formed multi-row low-rigidity part.
  • the low-rigidity portion 521 is not limited to the multi-row form, and may be, for example, a single low-rigidity portion composed of one low-rigidity portion 521.
  • the portion overlapping the groove-shaped recess in a plan view has a lower basis weight than the periphery, that is, the mass (basis weight) per unit area of the forming material is smaller than the periphery, and the portion has a low rigidity. It is said to be 521.
  • One end 521a of the low-rigidity portion 521 located on the ventral exterior body 3A side extends forward beyond the lower end edge 3Aa of the ventral exterior body 3A.
  • one end 521a of the low-rigidity portion 521 extends forward beyond the lower end edge 3Aa of the ventral exterior body 3A to a position where it overlaps with the abdominal elastic region X2 (waist gather WG).
  • the "forward direction” is a direction approaching the waist opening in the ventral side A with respect to the vertical direction X of the diaper 1.
  • the other end 521b of the low-rigidity portion 521 located on the back side exterior body 3B side does not reach the back side exterior body 3B.
  • the low-rigidity portion 521 When the low-rigidity portion 521 is partially formed on the auxiliary layer 52 in this way, the number of the low-rigidity portions 521, the length in the vertical direction X, and the length (width) in the horizontal direction Y can be adjusted. , The rigidity of the auxiliary layer 52, and thus the rigidity of the absorber 5, can be easily adjusted, which is preferable. Further, when the low-rigidity portion 521 is formed as a groove-shaped recess, it is located on the side that comes into contact with the wearer's skin at the time of wearing, so that it can function as a liquid conduction flow path, which is more preferable.
  • the leg elastic members 43 and 43 are arranged in the dorsal elastic region X1 of the dorsal exterior body 3B, but the configurations other than the leg elastic members 43 and 43 described in the above embodiment are described.
  • the configuration of the dorsal exterior body is different from that of the above-described embodiment. That is, the diaper 1A shown in FIG. 11 includes a dorsal exterior body 3C instead of the dorsal exterior body 3B in the above-described embodiment.
  • the difference between the dorsal exterior body 3B and the dorsal exterior body 3C is the configuration of the elastic member provided in the dorsal telescopic area X1 of the dorsal extending portion 39.
  • the elastic member 47 of the back side exterior body 3C is an elastic member arranged in an extended state along the lateral direction Y, and the back side exterior body 3C can be expanded and contracted in the lateral direction Y.
  • the elastic member 47 is a plurality of thread-like or strip-shaped elastic members arranged in an extended state between the outer layer sheet 32 and the inner layer sheet 34, similarly to the elastic member 41.
  • the elastic members 47 extend in the horizontal direction Y and are arranged on the dorsal exterior body 3C intermittently in the vertical direction X. Therefore, in the back side exterior body 3C, gathers similar to the waist gather WG by the elastic member 41 are formed on the back side extending portion 39.
  • the elastic member 47 is not arranged in the central region of the absorber 5, and is divided into Y in the lateral direction with the absorber 5 as a boundary. According to the diaper 1A having such a configuration, it is preferable because it has the same effect as that of the diaper 1.
  • the absorbent sheet 51 is a thin absorbent sheet including a first fiber sheet 511, a second fiber sheet 512, and a plurality of particles of the absorbent polymer 513 arranged between both sheets 511 and 512. Is. Both sheets 511 and 512 are joined to each other by an adhesive 514. In the illustrated form, the adhesive 514 is arranged on the inner surface of each of the sheets 511 and 512 (the surface facing the absorbent polymer 513). The plurality of particles of the absorbent polymer 513 are arranged in a certain unit in the plane direction of the absorbent sheet 51, and form an arrangement region of the absorbent polymer 513.
  • the absorbent polymer 513 is arranged in such a manner that no gap that can be visually recognized macroscopically is observed.
  • no gaps that can be visually recognized macroscopically are observed means that the absorbent polymer 513 is arranged so as to evenly cover one surface of the fiber sheet, but the region is microscopically viewed. In this case, it is permissible that voids between the absorbent polymers 513 are unintentionally formed. This void is about 10 to 1000 ⁇ m.
  • the voids between the absorptive polymers 513 that are microscopically observed in the arrangement region of the absorptive polymer 513 are also referred to as "microscopic voids".
  • the first fiber sheet 511 and the second fiber sheet 512 are directly bonded by the adhesive 514 without the intervention of the absorbent polymer 513 (hereinafter, this is simply referred to as “this". It also has a "direct bonding site") 515.
  • the direct joining site 515 is formed in each of the above-mentioned microscopic voids.
  • the adhesive 514 becomes a columnar shape and both sheets 511 and 512 are directly bonded to each other.
  • a plurality of direct joining portions 515 are formed in a regular or irregular scattered spot shape when the absorbent sheet 51 is viewed in the sheet plane direction.
  • the absorbent polymer 513 can be sufficiently exhibited in liquid absorbency while being held at a predetermined position on the absorbent sheet 51.
  • the direct bonding portion 515 can be formed, for example, by appropriately adjusting the basis weight and particle size of the absorbent polymer 513, or the coating amount and area of the adhesive 514.
  • the sites where both sheets 511 and 512 are bonded by the adhesive 514 via the absorbent polymer 513 (hereinafter, this).
  • Is also referred to as an “indirect joint site”) 516 is preferably provided.
  • the application site of the adhesive 514 in the first fiber sheet 511, the presence site of the absorbent polymer 513, and the application site of the adhesive 514 in the second fiber sheet 512 overlap in the thickness direction. There is.
  • the absorbent polymer 513 can be held in a predetermined position on the absorbent sheet 51, the unintended movement or uneven distribution of the absorbent polymer 513 can be further reduced, and the absorbent sheet can be further reduced.
  • the liquid absorbency of 51 can be further enhanced.
  • an adhesive having flexibility that can be stretched according to the swelling change accompanying the liquid absorption of the absorbent polymer 513 examples include (co) polymers of vinyl monomers such as 2-ethylhexyl acrylate, butyl acrylate, ethyl acrylate, cyanoacrylate, vinyl acetate, and methyl methacrylate (ethylene vinyl acetate copolymer and the like). ) Etc., acrylic adhesive containing one or more, silicone-based adhesive containing polydimethylsiloxane polymer polymer, etc., and natural rubber-based adhesive containing natural rubber, polyisoprene, chloroprene, etc.
  • Isoprene-based adhesive styrene-butadiene copolymer (SBR), styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butadiene-styrene block Examples thereof include rubber-based adhesives such as styrene-based adhesives containing one or more polymers (SEBS) and styrene-ethylene-propylene-styrene block copolymers (SEPS). These may be used individually by 1 type or in combination of 2 or more type. As shown in FIG.
  • the adhesive 514 when the adhesive 514 is arranged on the facing surface (inner surface) of each of the sheets 511 and 512 with the absorbent polymer 513, the adhesive arranged on the first fiber sheet 511.
  • the 514 and the adhesive 514 arranged on the second fiber sheet 512 may be the same type or different types.
  • both sheets 511 are excellent in flexibility and elasticity, and both sheets 511 and 512 are maintained in a directly bonded state even after the swelling of the absorbent polymer 513, and contraction force is exhibited to develop both sheets 511.
  • a rubber-based adhesive as the adhesive 514, and it is more preferable to use a styrene-based adhesive among the rubber-based adhesives.
  • the adhesive 514 is preferably a hot melt adhesive from the viewpoint of achieving both the flexibility of the adhesive and the adhesiveness to the sheet.
  • the hot melt adhesive include the above-mentioned various adhesives, tackifiers such as petroleum resin and polyterpene resin, plasticizers such as paraffin oil, and, if necessary, phenol-based, amine-based, and phosphorus-based adhesives. It may contain an antioxidant such as a benzimidazole type.
  • the adhesive 514 present at the direct bonding portion 515 provides an appropriate bonding force between the fiber sheets 511 and 512 to the extent that the absorbent polymer 513 does not move or fall off. It can be expressed and the absorbent polymer 513 carried in place between the fiber sheets 511 and 512. Further, since the absorbent polymer 513 exhibits an appropriate bonding force to the extent that it can sufficiently swell, the liquid absorbability of the absorbent polymer 513 can be sufficiently exhibited.
  • the adhesive 514 since the adhesive 514 has elasticity, the extension of the adhesive 514 present at the direct bonding site 515 due to the swelling of the absorbent polymer 513 and the accompanying adhesion The force balance with the contraction of the agent 514 is likely to occur, and the bonding force capable of both supporting the absorbent polymer 513 at an appropriate position and securing a space in which the absorbent polymer 513 can swell is efficiently developed. be able to. As a result, the liquid absorbency of the absorbent sheet 51 is further improved.
  • the adhesive 514 is preferably applied to the inner surface of each of the sheets 511 and 512, that is, the surface facing the absorbent polymer 513. With such a configuration, the adhesives 514 applied to both sheets 511 and 512 are bonded to each other to efficiently form the direct bonding portion 515 on the absorbent sheet 51, and the absorbent polymer 513 is supported at an appropriate position. And the securing of the space in which the absorbent polymer 513 can swell can be achieved at the same time. In addition to this, since the adhesive 514 can easily exist in the gap between the fibers constituting both sheets 511 and 512, peeling occurs at each interface between both sheets 511 and 512 and the adhesive 514. It also has the advantage of being difficult to use.
  • the absorbent polymer 513 is combined with the second fiber sheet 512 in the first fiber sheet 511.
  • the adhesive 514 is discontinuously applied to the joint region so as to have a non-coated portion, and the adhesive 514 has a gap over the entire joint region of the second fiber sheet 512 with the first fiber sheet 511. It is preferable that the coating is continuously applied without any problem.
  • the liquid receiving surface which is the surface where the absorbent sheet 51 and the liquid first come into contact with each other, is the non-existent surface of the adhesive 514 in the first fiber sheet 511, that is, the outer surface of the absorbent sheet 51 on the first fiber sheet 511 side. It is also preferable to use it as a surface.
  • the bonding region is a region in which the absorbent polymer 513 is arranged in such a manner that no gaps that can be visually recognized macroscopically are observed.
  • Examples of the form in which the adhesive 514 is applied discontinuously so as to have a non-applied portion in the first fiber sheet 511 include a spiral shape, a summit shape, an omega shape, a curtain shape, and a striped shape.
  • the adhesive 514 applied to the first fiber sheet 511 has a spiral shape.
  • the ratio of particles of the absorbent polymer 513 to the absorbent sheet 51 (hereinafter, also referred to as “SAP ratio”) is, for example, preferably 60% by mass or more, more preferably 70% by mass or more, and preferably 95% by mass. Hereinafter, it is more preferably 90% by mass or less.
  • the SAP ratio is measured, for example, by the following method.
  • the absorbent sheet 51 is taken out from the diaper 1 in a certain area (for example, 9 cm 2 to 100 cm 2). In this case, care should be taken to cut out the absorbent sheet 51 only in a place where no gap between the absorbent polymers 513 that can be visually recognized macroscopically is observed.
  • the absorbent sheet 51 is decomposed using a solvent that dissolves the adhesive, and the two fiber sheets 511, 512 and the absorbent polymer 513 are separated.
  • the mass of the fiber sheets 511 and 512 and the mass of the absorbent polymer 513 are measured.
  • Calculate the SAP ratio from the following formula.
  • SAP ratio ((mass of absorbent polymer 513) / (mass of absorbent polymer 513 + mass of each fiber sheet 511 and 512)) ⁇ 100
  • the structure of the absorbent sheet may be other than the structure described as the absorbent sheet 51.
  • a sheet containing water-absorbent fibers that sandwich the sheets with pressure embossing instead of an adhesive can be mentioned.
  • the dorsal extension may be rectangular in plan view, as shown in FIG.
  • the auxiliary layer 52 may be arranged over the entire region where the dorsal expansion / contraction region X1 and the absorber 5 overlap in the horizontal direction Y when the diaper 1 is viewed along the vertical direction X.
  • the present invention further discloses the following pants-type absorbent articles. ⁇ 1> These so as to bridge the ventral exterior body arranged on the ventral side of the wearer, the dorsal exterior body arranged on the back side of the wearer, and the ventral exterior body and the dorsal exterior body. It is provided with an absorbent main body fixed to the outer body of the body, has a vertical direction extending between the ventral outer body and the dorsal outer body, and a horizontal direction orthogonal to the vertical direction, and the ventral outer body.
  • a pants-type absorbent article having a side seal portion formed by joining the body and both side edges of the dorsal exterior body.
  • the absorbent body comprises an absorber having an absorbent sheet with two identical or different fiber sheets and absorbent polymer particles arranged between the fiber sheets.
  • the dorsal exterior body includes a dorsal extending portion extending downward from the lower end of the side sealing portion.
  • the dorsal extension has a dorsal stretchable area that can be stretched along the lateral direction.
  • the absorber is located in the central region of the lateral direction in the region where the dorsal stretchable region and the absorber overlap in the lateral direction.
  • the central region is a pants-type absorbent article having a higher rigidity than the lateral region adjacent to the central region.
  • the dorsal stretchable region can be stretched and contracted by elastic members arranged in a stretched state along the lateral direction.
  • the elastic member is not arranged in the central region of the absorber, or is arranged in such a manner that elasticity is not exhibited when the elastic member is arranged in the central region.
  • Pants-type absorbent article described in. ⁇ 3> The dorsal stretchable area is stretchable by elastic members arranged so as to draw a curve along the wearer's legs.
  • the elastic member is not arranged in the central region of the absorber, or is arranged in such a manner that elasticity is not exhibited when the elastic member is arranged in the central region.
  • ⁇ 4> The pants-type absorbent article according to any one of ⁇ 1> to ⁇ 3>, wherein the dorsal extending portion has a shorter lateral length toward the lower side.
  • ⁇ 5> The pants-type absorbent article according to any one of ⁇ 1> to ⁇ 4>, wherein the auxiliary layer is made of a mixed product fiber containing at least a water-absorbent natural fiber and an absorbent polymer.
  • the absorbent body is provided with first stretchable regions extending in the vertical direction on both sides of the absorbent body. The first stretchable region extends beyond the end of the auxiliary layer on the dorsal exterior side, or extends to the vicinity of the end of the auxiliary layer on the dorsal exterior side.
  • the absorbent body is provided with a second stretchable area that extends in the vertical direction and can stand up toward the wearer's body, inside the first stretchable area in the lateral direction.
  • the second stretchable region extends beyond the end of the auxiliary layer on the dorsal exterior side, or extends to the vicinity of the end of the auxiliary layer on the dorsal exterior side.
  • the first expansion / contraction region is formed by a pair of upright portions 50, 50, and the pair of upright portions extends beyond the end portion on the dorsal exterior body side. 7>
  • the pants-type absorbent article is provided with a second stretchable area that extends in the vertical direction and can stand up toward the wearer's body, inside the first stretchable area in the lateral direction.
  • the second stretchable region extends beyond the end of the auxiliary layer on the dorsal exterior side, or extends to the vicinity of the end of the auxiliary layer on the dorsal exterior side.
  • the pants-type absorbent article according to ⁇ 8> wherein the folding starting point when the first standing portion stands up is formed by the corners of the side edges located in the lateral direction of the auxiliary layer.
  • the pants according to ⁇ 7> wherein the second stretchable region has a second standing portion 82 that stands up on the wearer side, and the standing portion extends beyond the end portion on the dorsal exterior body side. Mold-absorbent article.
  • the second expansion / contraction region includes a base end portion that serves as a standing base end when the second standing portion stands up toward the wearer's skin side.
  • the pants-type absorbent article according to ⁇ 10> wherein the positions of the side edge and the base end portion are the same when viewed in the lateral direction.
  • the auxiliary layer extends from the dorsal exterior to the ventral exterior.
  • the auxiliary layer according to any one of ⁇ 1> to ⁇ 11>, wherein the auxiliary layer has a widening portion whose lateral length increases from the dorsal exterior body toward the ventral exterior body.
  • Pants type absorbent article ⁇ 13>
  • the auxiliary layer has the widening portion at or near the lower end edge of the ventral exterior body, and the lateral length of the auxiliary layer is continuously increased at the widening portion.
  • the pants-type absorbent article according to ⁇ 12>.
  • the ventral exterior body has a stretchable area around the abdomen that is stretchable in the lateral direction.
  • the pants-type absorbent article according to ⁇ 11> or ⁇ 13> wherein the abdominal elastic region and the widening portion overlap in a plan view of the absorbent article.
  • the auxiliary layer is fixed to the absorbent sheet so that the end portion on the dorsal exterior body side overlaps the dorsal expansion / contraction area of the dorsal exterior body and the widening portion overlaps the abdominal expansion / contraction area in a plan view.
  • the widening portion is a portion whose lateral length increases from the dorsal exterior body toward the ventral exterior body, and is formed to be longer than the width of the end portion on the dorsal exterior body side.
  • the auxiliary layer has a single or multiple low-rigidity portion extending in the vertical direction and having a lower rigidity than other portions in the auxiliary layer.
  • the pants-type absorbent article according to ⁇ 17> or ⁇ 18>, wherein the other end of the portion does not reach the dorsal exterior body.
  • the absorber has a multilayer structure in which the central region provided with the auxiliary layer is a laminate of the absorbent sheet and the auxiliary layer, and the side region adjacent to the central region is the absorbent sheet alone.
  • the pants-type absorbent article according to any one of ⁇ 1> to ⁇ 19> which has a single-layer structure.
  • the length L of the auxiliary layer from the end on the dorsal exterior body side to the ventral end on the opposite side is from one side edge located in the lateral direction to the other side edge.
  • the absorption is such that the end on the dorsal exterior body side is located substantially in the center of the dorsal expansion and contraction area of the dorsal extension in the vertical direction, and the ventral end is located near the center line in the vertical direction.
  • the pants-type absorbent article according to ⁇ 21> which is arranged on the sex sheet.
  • the pants-type absorption according to ⁇ 22> wherein the lower end of the side seal portion, which is the start position of the dorsal expansion / contraction region, and the end of the dorsal exterior body side are aligned along the vertical direction. Sex goods.
  • Pants type absorbent goods ⁇ 25> The above ⁇ 24>, wherein the first fiber sheet and the second fiber sheet have a portion directly bonded by an adhesive without interposing the absorbent polymer in the arrangement region of the absorbent polymer.
  • Pants type absorbent article ⁇ 26> The directly joined portion is described in ⁇ 25> above, wherein a plurality of the directly joined portions are formed in a regular or irregular scattered spot shape when the absorbent sheet is viewed in the sheet plane direction. Pants type absorbent article.
  • the adhesive is discontinuously applied to the bonding region of the first fiber sheet with the second fiber sheet so as to have a non-applied portion, and the bonding with the first fiber sheet of the second fiber sheet is performed.
  • the proportion of the absorbent polymer particles in the absorbent sheet is preferably 60% by mass or more, more preferably 70% by mass or more, preferably 95% by mass or less, and more preferably 90% by mass or less.
  • the thickness of the absorbent sheet measured under a pressure of 4.9 mN / cm 2 is preferably 0.3 mm or more, more preferably 0.6 mm or more, and is preferable.
  • the pants-type absorbent article of the present invention deformation of the absorbent body is prevented without impairing the good fit of the thin absorbent body. Further, according to the pants-type absorbent article of the present invention, the wearer can easily move his / her feet. Further, according to the pants-type absorbent article of the present invention, the appearance in the worn state becomes like underwear, and the appearance is excellent.

Abstract

Cet article absorbant type culotte (1) est pourvu : d'une partie d'étanchéité latérale qui est munie d'un corps absorbant (2) fixé à un corps extérieur de manière à effectuer un pont entre un corps extérieur côté ventral (3A) et un corps extérieur côté dorsal (3B), et qui est formé par la jonction des rebords sur les deux côtés des corps extérieurs respectifs. Le corps absorbant est pourvu d'un agent absorbant (5) comprenant une feuille absorbante (51) qui est munie d'une feuille textile et de particules polymères. Le corps extérieur côté dorsal (3B) est pourvu d'une partie d'extension côté dorsal (39) qui s'étend depuis une extrémité inférieure (Sa) de la partie d'étanchéité latérale. La partie d'extension côté dorsal est pourvue d'une région d'étirage côté dorsal (X1) qui peut être étirée le long d'un sens latéral (Y). L'agent absorbant est disposé, au niveau d'une région où la région d'étirage côté dorsal et l'agent absorbant se chevauchent dans le sens latéral, une couche auxiliaire (52) qui chevauche la feuille absorbante dans une zone centrale (5A) dans le sens latéral. La zone centrale est conçue pour avoir une rigidité supérieure comparée aux zones latérales (5B) adjacentes à la zone centrale.
PCT/JP2020/048064 2019-12-26 2020-12-23 Article absorbant type culotte WO2021132292A1 (fr)

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CN202080089842.2A CN114901229A (zh) 2019-12-26 2020-12-23 短裤型吸收性物品

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JP2019-236118 2019-12-26
JP2019236118A JP7377704B2 (ja) 2019-12-26 2019-12-26 パンツ型吸収性物品

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WO2021132292A1 true WO2021132292A1 (fr) 2021-07-01

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WO2023090407A1 (fr) * 2021-11-19 2023-05-25 花王株式会社 Article absorbant

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JP2014233373A (ja) * 2013-05-31 2014-12-15 ユニ・チャーム株式会社 吸収性物品
JP2015073844A (ja) * 2013-10-11 2015-04-20 花王株式会社 吸収性パッド
JP2018068818A (ja) * 2016-11-01 2018-05-10 花王株式会社 パンツ型使い捨ておむつ
JP2019084042A (ja) * 2017-11-07 2019-06-06 ユニ・チャーム株式会社 吸収性物品

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TW200394B (fr) * 1991-01-25 1993-02-21 Kao Corp
JP3857292B1 (ja) * 2005-07-28 2006-12-13 花王株式会社 パンツ型使い捨ておむつ
CN103052373B (zh) * 2010-08-03 2016-05-18 花王株式会社 内裤型吸收性物品
JP6213877B2 (ja) * 2014-09-29 2017-10-18 大王製紙株式会社 パンツタイプ使い捨ておむつ
JP6674205B2 (ja) * 2014-10-20 2020-04-01 花王株式会社 パンツ型使い捨ておむつ

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JP2014233373A (ja) * 2013-05-31 2014-12-15 ユニ・チャーム株式会社 吸収性物品
JP2015073844A (ja) * 2013-10-11 2015-04-20 花王株式会社 吸収性パッド
JP2018068818A (ja) * 2016-11-01 2018-05-10 花王株式会社 パンツ型使い捨ておむつ
JP2019084042A (ja) * 2017-11-07 2019-06-06 ユニ・チャーム株式会社 吸収性物品

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023090407A1 (fr) * 2021-11-19 2023-05-25 花王株式会社 Article absorbant

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