WO2015072218A1 - Pant-type absorbent article - Google Patents

Pant-type absorbent article Download PDF

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Publication number
WO2015072218A1
WO2015072218A1 PCT/JP2014/073874 JP2014073874W WO2015072218A1 WO 2015072218 A1 WO2015072218 A1 WO 2015072218A1 JP 2014073874 W JP2014073874 W JP 2014073874W WO 2015072218 A1 WO2015072218 A1 WO 2015072218A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
absorbent article
pants
bending guide
article according
Prior art date
Application number
PCT/JP2014/073874
Other languages
French (fr)
Japanese (ja)
Inventor
了一 山本
順 梶原
佐藤 信也
嵩 坂倉
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
Priority claimed from JP2013236216A external-priority patent/JP6219691B2/en
Priority claimed from JP2014161661A external-priority patent/JP6408292B2/en
Priority claimed from JP2014161652A external-priority patent/JP6420087B2/en
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN201490001094.8U priority Critical patent/CN206063309U/en
Priority to RU2016120000U priority patent/RU173358U1/en
Publication of WO2015072218A1 publication Critical patent/WO2015072218A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/535Absorbent 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
    • A61F13/536Absorbent 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/531Absorbent 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 a homogeneous composition through the thickness of the pad
    • A61F13/532Absorbent 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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533Absorbent 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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/535Absorbent 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
    • A61F2013/5355Absorbent 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 with terraced core

Definitions

  • the present invention relates to a pants-type absorbent article.
  • the absorbent body has a high basis weight portion at the center in the width direction at the crotch portion, and a low basis weight portion having a lower basis weight than the high basis weight portion on both sides of the high basis weight portion.
  • a pants-type disposable diaper having the following is described.
  • the high basis weight part has a central bending induction part consisting of a slit, a groove or a non-stacking fiber part extending in the longitudinal direction of the absorbent body, and the low basis weight part is a side part bending induction part consisting of a non-stacking fiber part.
  • the central bending guide part extends from the end position of the side bending guide part.
  • the side bending guide part extends from the end position of the central bending guide part.
  • Patent Document 2 describes an absorbent article having a main body absorber on the back sheet side and having an absorber having a top sheet side medium-high absorber.
  • the middle / high absorber is disposed in a region facing the excretion portion of the wearer, and the width thereof is narrower than that of the main body absorber.
  • the medium-high absorbent body has a large number of block-like absorbent parts, and is regularly spaced from each other.
  • the middle-high absorbent body has a groove-shaped portion regularly formed in the longitudinal direction and the width direction between adjacent block-shaped absorbent portions.
  • the absorbent body is often composed of a mixed fiber of hydrophilic fibers such as pulp and water-absorbing polymer particles.
  • the absorbent body having such a structure absorbs liquid, As a result, the water-absorbing polymer swells, and as a result, the absorbent body also swells.
  • the degree of swelling becomes remarkable as compared with the low basis weight part.
  • the bending guide part acts as a starting point of deformation, and the deformation due to swelling is easily promoted.
  • the swelled and deformed absorbent body compresses the wearer's body to reduce the wearing feeling, inhibits the stretchability of the stretchable gathers arranged in the absorbent article, or causes liquid leakage. Sometimes. Therefore, it is necessary to determine the formation position of the high basis weight portion and the formation position of the bending guide portion in the absorbent body so as not to cause these disadvantages. However, in the techniques described in the above-described patent documents, it may not be said that the formation position of the high basis weight portion or the formation position of the bending guide portion should be satisfied.
  • the present invention comprises a vertically long absorbent main body including an absorbent core, and an exterior body that is disposed on the non-skin-facing surface side of the absorbent main body and is fixed to the absorbent main body.
  • An exterior body ventral region located on the stomach side of the exterior body and the back side of the exterior body A pants-type absorbent article in which both side edge portions along the main body longitudinal direction of each exterior body back side region located in the section are joined to each other to form a waist opening and a pair of leg openings.
  • the absorptive core has at least a first region and a second region having different basis weights, and the first region has a basis weight higher than that of the second region.
  • the first region includes at least a crotch portion, and the second region includes at least a dorsal side portion.
  • the first region has a bending guide portion group including a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
  • the bending guide part group is composed of a central bending guide part located in the central region in the width direction of the absorbent core and a pair of side bending guide parts located on both sides of the central bending guide part.
  • the bending guide part group is located closer to the crotch part than the lower end part of the exterior body located on the abdominal side part, and the bending guide part group is not present on the back side part.
  • the present invention also includes a vertically long absorbent main body including an absorbent core, and an exterior body disposed on the non-skin-facing surface side of the absorbent main body and fixed to the absorbent main body.
  • An exterior body ventral region located on the abdominal side of the exterior body and the back A pants-type absorbent article in which both side edges along the longitudinal direction of the main body of the exterior body dorsal region located on the side are joined together to form a waist opening and a pair of leg openings,
  • the absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
  • the first region provides at least a crotch portion
  • the second region provides a pants-type absorbent article including at least a ventral portion and a dorsal portion.
  • the first region has a bending guide portion group including a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
  • the bending guide part group is composed of a central bending guide part located in the central region in the width direction of the absorbent core and a pair of side bending guide parts located on both sides of the central bending guide part.
  • the bending guide part group is located closer to the crotch part than the lower end part of the exterior body located on the abdominal side part, and the bending guide part group is not present on the back side part.
  • FIG. 1 is a perspective view showing an example of a pants-type disposable diaper that is an embodiment of a pants-type absorbent article of the present invention.
  • FIG. 2 is a plan view on the skin contact surface side (surface sheet side) showing a developed state in which the diaper shown in FIG.
  • FIG. 3 is an exploded perspective view of the diaper shown in FIG.
  • FIG. 4 is a cross-sectional view schematically showing a cross section taken along the line II of FIG. 5 (a) is a plan view of the absorbent core in the diaper shown in FIG. 1, and
  • FIG. 5 (b) is a cross-sectional view taken along the line bb in FIG. 5 (a).
  • 6 (a) is a plan view of another form of the absorbent core, and FIGS.
  • FIG. 6 (b), 6 (c), and 6 (d) show the bb line in FIG. 6 (a), It is a cc line and dd line sectional view.
  • FIG. 7A is a plan view of still another form of the absorbent core
  • FIG. 7B is a cross-sectional view taken along the line bb in FIG. 7A.
  • FIG. 8 is a perspective view showing another embodiment of the pant-type absorbent article of the present invention.
  • FIG. 9 is a plan view of the underpants-type disposable diaper shown in FIG.
  • FIG. 10 is an enlarged plan view of a back side region of the pants-type disposable diaper shown in FIG. 9.
  • FIG. 11 is an enlarged plan view of the ventral region of the pants-type disposable diaper shown in FIG. 9.
  • FIG. 12 is a cross-sectional view taken along the line II of FIG.
  • FIG. 13 is a plan view on the skin contact surface side (surface sheet side) showing a developed state in which another embodiment of the pant-type absorbent article of the present invention is expanded in a flat shape by extending the elastic member of each part. is there.
  • the pants-type disposable diaper 1 of the present embodiment is arranged on a vertically long absorbent main body 2 including an absorbent core 5 and a non-skin facing surface side of the absorbent main body 2 as shown in FIGS. 1 to 3.
  • An exterior body ventral region (belt side sheet member 31 to be described later) and a back side portion having a crotch portion C arranged in the crotch portion of the wearer in the longitudinal direction X of the body and located on the abdominal side portion A of the exterior body 3
  • a pair of side seal portions S, S and a waist opening WO are formed by joining the side edge portions 3s, 3s along the main body longitudinal direction X of the exterior body back side region (back side seat member 32 described later) located in B.
  • a pair of leg openings LO, LO are formed.
  • the skin facing surface is a surface that faces the wearer's skin when worn on a pants-type absorbent article and its constituent members (for example, an absorbent main body, an absorbent core), and is a non-skin facing surface. Is a surface directed to the side opposite to the skin side of the wearer (clothing side such as shorts) when worn on the pant-type absorbent article and its constituent members.
  • the main body longitudinal direction is the longitudinal direction of the vertically long absorbent main body
  • the main body width direction is a direction orthogonal to the main body longitudinal direction.
  • the absorbent main body 2 includes a liquid-permeable surface sheet 21 that forms the skin-facing surface of the absorbent main body 2, and a liquid-impermeable or liquid-impermeable back surface that forms the non-skin-facing surface of the absorbent main body 2.
  • the sheet 22 and the liquid-retaining absorbent 23 disposed between the sheets 21 and 22 are included, and are formed in a rectangular shape that is long in the X direction.
  • the absorbent body 23 is configured to include an absorbent core 5 mainly composed of a pile of hydrophilic fibers such as pulp fibers, and a core wrap sheet (not shown) that covers the absorbent core 5. .
  • the absorbent core 5 contains water-absorbing polymer particles as necessary.
  • hydrophilic fibers such as pulp fibers and water-absorbing polymer particles can be used as a mixed product.
  • the water-absorbing polymer particles can also be arranged in a layer form at any part of the pile of hydrophilic fibers such as pulp fibers.
  • the top sheet 21, the back sheet 22, and the absorber 23 are all rectangular shapes that are long in the X direction, and the top sheet 21 and the back sheet 22 are outward in the longitudinal direction X from both ends in the longitudinal direction X of the absorber 23.
  • the absorbent main body 2 having a rectangular shape that is long in the X direction is joined at the portion extending in the X direction.
  • the absorbent main body 2 is provided with a pair of three-dimensional gathers 4 and 4 along the main body longitudinal direction X on the left and right sides along the main body longitudinal direction X on the skin facing surface. ing.
  • Each three-dimensional gather 4 stands up toward the wearer's skin side at least in the crotch C when worn.
  • Each three-dimensional gather 4 includes a liquid-resistant or water-repellent three-dimensional gather forming sheet material 41 and a three-dimensional gather forming elastic member 42 fixed to the sheet material 41.
  • the sheet material 41 is formed from a single belt-like sheet, and one end portion of the sheet material 41 in the main body width direction Y is disposed between the absorbent body 23 and the back sheet 22 of the absorbent main body 2 and bonded.
  • the other end of the sheet material 41 in the main body width direction Y is folded outwardly in the main body width direction Y by a folding line (not shown) extending in the main body longitudinal direction X above the absorber 23.
  • the elastic member 42 is fixed via an adhesive in a state where the elastic member 42 extends in the main body longitudinal direction X between the sheets opposed to each other by the folding, so that the three-dimensional gather 4 is formed.
  • the exterior body 3 is configured to include sheet materials 35 and 36 and a plurality of exterior body forming elastic members 33 fixed to the sheet materials 35 and 36.
  • the exterior body 3 in the present embodiment includes an abdominal sheet member 31 disposed on the abdomen side of the wearer when worn.
  • the exterior body 3 contains the back side sheet
  • the ventral sheet member 31 and the back sheet member 32 have the same length along the longitudinal direction X and the width direction Y.
  • a rear body extension region 32E extending further downward in the longitudinal direction from the lower end 32A in the longitudinal direction of the back sheet member 32 is continuously provided. That is, a boundary portion between the back side seat member 32 and the back body extension region 32 ⁇ / b> E becomes the lower end portion 32 ⁇ / b> A of the back side seat member 32.
  • the member composed of the back seat member 32 and the rear body extension region 32E is also referred to as “rear body member 32F”.
  • the pants-type disposable diaper 1 of the present embodiment includes an abdominal sheet member 31 (exterior body ventral region) disposed on the wearer's ventral side and a back sheet member 32 (exterior) disposed on the wearer's dorsal side.
  • a pair of side seal portions S, S, a waist opening WO, and a pair of leg openings LO, LO are formed by joining together.
  • the ventral sheet member 31 and the dorsal sheet member 32 are joined by a known joining means such as an adhesive, a heat seal, a high frequency seal, and an ultrasonic seal.
  • the outer side end in the longitudinal direction of the ventral sheet member 31 is used.
  • the positions of the edge 31 ′ and the outer side edge 32 ′ in the longitudinal direction of the back sheet member 32 are matched to join the side edges 3 s and 3 s of the sheet members 31 and 32 together.
  • the side edge portions 3 s and 3 s of both the seat members 31 and 32 are joined together in this way, the position of the lower end portion 31 ⁇ / b> A along the longitudinal direction X of the abdominal sheet member 31 and the longitudinal direction X of the back seat member 32.
  • the position of the lower end portion 32A is aligned.
  • a rear body extending area 32E hangs downward.
  • the positions of the lower end portions 31 ⁇ / b> A and 32 ⁇ / b> A of the ventral side seat member 31 and the back side seat member 32 coincide with the positions of the lower end portions of the side seal portion 4. That is, the lower end portions 31A and 32A of the abdominal sheet member 31 and the back sheet member 32 are joined to each other by joining the side edge portions 3s and 3s along the main body longitudinal direction X of the both sheet members 31 and 32 to each other. It is the position of the lower end of the side seal portion S when the seal portions S, S are formed.
  • a line connecting the left and right lower end portions 31A of the ventral side sheet member 31 is defined as a boundary portion between the ventral side portion A and the crotch portion C.
  • a line connecting the left and right lower end portions 32A of the back side seat member 32 is defined as a boundary portion between the back side portion B and the crotch portion C. Therefore, the back body extension area 32E of the back body member 32F is located in the crotch part C.
  • the abdominal sheet member 31 and the back body member 32F are respectively an outer layer sheet material 35 that forms a non-skin facing surface (the outer surface of the diaper 1), and an inner layer sheet material 36 that is disposed on the inner surface side of the outer layer sheet material 35. And a plurality of thread-like or belt-like elastic members 33 fixed between the sheet members 35 and 36 by an adhesive (not shown), and the unfolded state of the diaper 1 as shown in FIG. In FIG. 1, the rectangular shape is long in the body width direction Y.
  • the two sheet members 35 and 36 are joined to each other at a predetermined portion by an adhesive (not shown).
  • the plurality of elastic members 33 are arranged substantially linearly along the main body width direction Y and extend in the main body width direction Y. In the state, they are arranged at a predetermined interval in the longitudinal direction X of the main body.
  • the outer layer sheet material 35 has the same length in the main body width direction Y as that of the inner layer sheet material 36, but the length in the main body length direction X is longer than that of the inner layer sheet material 36. .
  • the outer layer sheet material 35 has an extending portion 35 ⁇ / b> E that extends outward from the outer end 36 a in the main body longitudinal direction X of the inner layer sheet material 36.
  • the extended portion 35E of the outer layer sheet material 35 of the abdominal sheet member 31 and the back body member 32F is folded back toward the inner layer sheet material 36, and the sheet 35 (35E) facing each other by the folded back. ), 36, the end of the main body longitudinal direction X of the absorbent main body 2 is disposed.
  • the sheets 35 (35E) and 36 facing each other are joined to each other by an adhesive (not shown) at a predetermined portion.
  • the elastic member 33 extends between the outer layer sheet material 35 and the inner layer sheet material 36 at the waist portion D in each of the ventral side portion A (belt side seat member 31) and the back side portion B (back side seat member 32).
  • the waist gathers are formed by being fixed by.
  • the elastic member 33 of the waist part D of the ventral part A and the elastic member 33 of the waist part D of the back part B are the full length of the body width direction Y of the ventral part A or the back part B, as shown in FIG. It is possible to express the inherent stretchability throughout.
  • the waist part D is a part located around the waist of the wearer.
  • the outer end 1a of the body longitudinal direction X in the abdominal side A of the diaper 1 and the body longitudinal direction X of the back side B of the diaper 1 are arranged. This is a region from each outer end 1b to a length of 1 to 15% of the total length of the diaper 1 in the longitudinal direction X of the main body.
  • an elastic member 34 is provided between the outer layer sheet material 35 and the inner layer sheet material 36 at the waist portion E in each of the ventral side portion A (belt side seat member 31) and the back side portion B (back side seat member 32).
  • a waistline gather is formed.
  • the waistline E of the abdominal side A has the diaper 1 in an expanded state in which the elastic members of the respective parts are extended to expand in a plane, the abdominal side A is the upper side, and the back side B is When considered as the lower side, it is an area located below the waist part D and above the crotch part C.
  • the waistline portion E of the back side portion B is a region located below the waist portion D and above the back side extension region 32E when the diaper 1 is turned upside down from that shown in FIG. It is. Further, in the rear body extension region 32E that is a member located in the crotch part C, the extension region elastic member 37 is fixed in an extended state between the outer layer sheet material 35 and the inner layer sheet material 36. An extension part gather is formed.
  • the elastic member 34 and the extension area elastic member 37 of the waistline E are illustrated. As shown in FIG. 3, it is not arranged in the part which overlaps with the absorptive main body 2 (absorbent core 5). Therefore, in the waist part E and the back body extension area 32E of the abdominal part A and the back part B, a pair of waist gathers is provided on the left and right side parts along the longitudinal direction X of the main body excluding the region where the absorbent main body 2 is disposed. And the extension area gathers are formed.
  • the elastic members 34 and 37 extend over the entire region in the body width direction Y of the abdominal side A and the back side B so that the elastic members 34 and 37 overlap the absorbent main body 2.
  • 34 and 37 may be disposed, and a process for suppressing the stretchability of the elastic members 34 and 37 may be performed at a portion where the elastic members 34 and 37 overlap the absorbent main body 2.
  • a method of finely cutting the elastic members 34 and 37 after the elastic members 34 and 37 are arranged in the abdominal sheet member 31, the back sheet member 32, and the rear body extension region 32E can be cited.
  • limiting so that the elastic members 34 and 37 may not expand-contract by joining using an adhesive agent etc. is mentioned.
  • the elastic members 34 and 37 do not expand and contract at the portion where the elastic members 34 and 37 overlap the absorbent main body 2, but other portions (in the main body width direction Y of the absorbent main body 2) other than the portion. Expansion and contraction is maintained in the portion located outside.
  • the elastic members 34 and 37 arranged in the waistline portion E and the back body extension region 32E are suppressed by the stretchability at the portion overlapping the absorbent main body 2 (absorbent core 5).
  • the end of the absorbent main body 2 in the main body longitudinal direction X can be made to follow the wearer's body without causing vertical wrinkles in the sex main body 2, thereby effectively preventing liquid leakage.
  • inconveniences such as a mark due to the top of the wrinkles generated in the absorbent main body 2 hitting the skin are effectively prevented.
  • FIG. 5 shows the absorbent core 5 provided in the pants-type disposable diaper 1 of the present embodiment.
  • the absorbent core 5 has an abdominal side A, a back side B, and a crotch C corresponding to the diaper 1.
  • the ventral portion A is a region where the absorbent core 5 overlaps the ventral sheet member 31.
  • the back part B is an area where the back sheet member 32 and the absorbent core 5 overlap in the back body member 32F.
  • the crotch portion C is a region between the lower end portion 31 ⁇ / b> A of the ventral side sheet member 31 and the lower end portion 32 ⁇ / b> A of the back side seat member 32.
  • the crotch part C includes a back body extension region 32E of the back body member 32F.
  • the absorbent core 5 has two regions, a first region 41 and a second region 42 having different basis weights.
  • the first region 41 includes at least the crotch part C, and further includes at least the ventral part A.
  • the second region 42 includes at least the back side portion B.
  • “The first region 41 includes at least the crotch portion C” means that the first region 41 includes the crotch portion C and may further include another region, for example, the back side portion B.
  • the second region 42 includes at least the back side portion B means that the second region 42 includes the back side portion B and may further include other regions such as the crotch portion C. To do.
  • the absorbent core 5 has a vertically long and substantially rectangular shape in plan view.
  • the longitudinal direction of the absorbent core 5 coincides with the body longitudinal direction X.
  • the first region 41 has a higher basis weight than the second region 42.
  • the basis weight of the first region 41 is the same in any part (except for the bending guidance group described later).
  • the basis weight of the second region 42 is the same in any part.
  • the absorbent core 5 absorbs the liquid and swells, the degree of swelling of the second area 42 having a low basis weight can be suppressed. As a result, the absorbent core 5 can suppress pressure on the waist of the wearer due to swelling. This is particularly advantageous when the wearer is sleeping on his back.
  • the outer layer extending portion 35E in the sheet material 35 see FIGS.
  • a ratio of L 2 for L 1 [L 2 / L 1 ] value of ⁇ 100 is 50% or more When it is 100% or less, particularly 60% or more and 100% or less, the second region 42 is more difficult to swell, and it is less likely to cause discomfort when the diaper 1 is worn.
  • the basis weight of the first region 41 is preferably 120% or more with respect to the basis weight of the second region 42, and preferably 140% or more. Further preferred. Moreover, it is preferable that it is 250% or less, and it is still more preferable that it is 230% or less.
  • the basis weight of the first region 41 is preferably 120% or more and 250% or less, and more preferably 140% or more and 230% or less with respect to the basis weight of the second region 42.
  • the length of the first region 41 is preferably 50% or more of the entire length of the absorbent core 5, and preferably 60% or more. More preferably, it is more preferably 70% or more. Further, it is preferably 90% or less, more preferably 85% or less, and further preferably 80% or less.
  • the length of the first region 41 is preferably 50% or more and 90% or less of the total length of the absorbent core 5, more preferably 60% or more and 85% or less, and 70% or more and 80% or less. More preferably.
  • the length of the second region 42 is preferably 10% to 50% of the entire length of the absorbent core 5, more preferably 15% to 40%, and more preferably 20% to 30%. More preferably it is.
  • the ratio of the basis weight of the first region 41 and the basis weight of the second region 42 is as described above, and the value of the basis weight itself of the second region 42 that is the low basis weight region is 100 g / m 2 or more. It is preferably 150 g / m 2 or more, and more preferably 200 g / m 2 or more. Also it is preferably 600 g / m 2 or less, further preferably 550 g / m 2 or less, and still more preferably 500 g / m 2 or less.
  • the basis weight of the second region 42 is preferably 100 g / m 2 or more and 600 g / m 2 or less, more preferably 150 g / m 2 or more and 550 g / m 2 or less, and 200 g / m 2 or more and 500 g / m 2 or less. More preferably, it is m 2 or less.
  • the basis weight of the first region 41 on condition that the ratio of the basis weight and the basis weight of the second region 42 of the first region 41 is within the above range, 150 g / m 2 or more 900 g / m 2 Is preferably 200 g / m 2 or more and 850 g / m 2 or less, and more preferably 250 g / m 2 or more and 800 g / m 2 or less.
  • the magnitude relation of the basic weight of the 1st field 41 mentioned above and the 2nd field 42 is a place where the basic weight measured about the whole absorptive core 5 is compared, pulp fiber etc. which constitute absorptive core 5
  • the first region 41 is preferably higher than the second region 42 with respect to the basis weight of the hydrophilic fiber and the basis weight of the water-absorbing polymer. That is, it is preferable that the basis weight of the hydrophilic fiber constituting the first region 41 is higher than the basis weight of the hydrophilic fiber constituting the second region 42. Further, the basis weight of the water-absorbing polymer constituting the first region 41 is preferably higher than the basis weight of the water-absorbing polymer constituting the second region 42. Such a basis weight relationship is preferable because it can improve the absorption capacity near the urination point and is effective not only in preventing liquid leakage but also in suppressing gel blocking.
  • a difference in thickness due to a difference in basis weight may or may not occur.
  • a difference in thickness due to a difference in basis weight that is, whether or not a step is generated between the two regions 41 and 42 is not critical for achieving the advantageous effects of the present invention.
  • the absorptive core 5 is composed of a single structure regardless of whether or not there is a step between the regions 41 and 42.
  • the “single structure” means that the stacked fiber body including hydrophilic fibers such as pulp fibers and water-absorbing polymer particles constituting the absorbent core 5 has a single layer structure.
  • a multi-layer structure in which two or more kinds of laminated fibers are laminated is not included in the single structure according to the present invention.
  • the absorbent core 5 having the first region 41 and the second region 42 having different basis weights from a single structure, there is no interface between the layers in the absorbent core 5, so in the thickness direction
  • the advantage is that the diffusion of the liquid along the line is performed smoothly.
  • the absorbent core 5 is composed of a multi-layer structure, the interface between the layers tends to easily inhibit the diffusion of the liquid along the thickness direction.
  • the ratio of hydrophilic fibers such as pulp fibers contained in the absorbent core 5 and the water-absorbing polymer is preferably 1: 0.5 or more, expressed as a mass ratio of hydrophilic fiber: water-absorbing polymer. : More preferably 0.8 or more. Moreover, it is preferable that it is 1: 2.5 or less, and it is still more preferable that it is 1: 2 or less.
  • the mass ratio of hydrophilic fiber: water-absorbing polymer is preferably 1: 0.5 or more and 1: 2.5 or less, and more preferably 1: 0.8 or more and 1: 2 or less. In the first region 41 and the second region 42, the ratio between the hydrophilic fiber and the water-absorbing polymer may be the same or different.
  • the ratios in both the regions 41 and 42 are different because it is possible to disperse sufficient absorbent polymer in the vicinity of the urination point, which is useful for preventing liquid leakage.
  • a suction condition when manufacturing the absorbent core 5 using a known fiber stacker may be set appropriately.
  • the first region 41 has a bending guide section group 50 including a plurality of bending guide sections 51, 52 a, 52 b extending in the main body longitudinal direction X.
  • the bending guide portion group 50 includes a central bending guide portion 51 located in the central region in the body width direction Y, and a pair of side bending guide portions 52a and 52b located on both sides of the central bending guide portion 51. Consists of.
  • the central bending guiding portion 51 is located in the central area of the absorbent core 5 in the main body width direction Y and is located in the central area of the diaper 1 in the main body width direction Y.
  • Each of the side bending guide portions 52 a and 52 b extends in parallel with the central bending guide portion 51.
  • derivation part 52a, 52b is formed in the symmetrical position with respect to the vertical centerline (not shown) extended in the main body longitudinal direction X of the diaper 1. As shown in FIG.
  • a bending guide section group 50 including three strip guide sections 51, 52a and 52b is employed.
  • the number of bending guides is not limited to this.
  • two or more side bending guide portions can be formed symmetrically at the positions of both sides of the central bending guide portion 51 with respect to the single center bending guide portion 51.
  • Each bending guide part 51, 52a, 52b is a part that acts as a starting point of deformation or a flexible shaft of the absorbent core 5 when an external force is applied to the diaper 1 in a state where the diaper 1 is mounted.
  • each bending guide part 51, 52a, 52b is composed of, for example, a slit, a groove or a non-stacking part extending in the main body longitudinal direction X.
  • a slit is a part which cut
  • channel is an elongate recessed part of the predetermined width
  • the non-filament portion is a portion where the bottom portion is removed from the groove, and is a portion where no pile fiber such as pulp fibers constituting the absorbent core 5 is present.
  • the central bending guide part 51 is constituted by a slit, a groove, or a non-stacking part, and the side bending guide parts 52 a, 52 b are formed by a groove or a non-stacking part. It is preferable to comprise from.
  • each of the bending guide portions 51, 52 a, 52 b is composed of a non-stacked fiber portion that penetrates the entire thickness direction of the absorbent core 5.
  • the width thereof that is, the length along the main body width direction Y may be the same at any position in the main body longitudinal direction X. preferable.
  • the bending guide portions 51, 52a, and 52b constituting the bending guide portion group 50 may have the same width or different widths.
  • the width of each bending guide 51, 52a, 52b is preferably 1 mm or more, and more preferably 3 mm or more.
  • the width of each bending guide 51, 52a, 52b is preferably 1 mm or more and 20 mm or less, and more preferably 3 mm or more and 15 mm or less.
  • the bending guide portions 51, 52a and 52b constituting the bending guide portion group 50 may have the same or different lengths along the main body width direction Y.
  • the length of each bending guide 51, 52a, 52b is preferably 50 mm or more, and more preferably 100 mm or more.
  • the length of each bending guide 51, 52a, 52b is preferably from 50 mm to 350 mm, and more preferably from 100 mm to 300 mm.
  • the positions of the end portions on the ventral side A side may be the same or different.
  • the position of the end portion on the back side B side may be the same or different.
  • the positions of the end portions on the ventral side A side of the bending guide portions 51, 52 a, 52 b are the same, and therefore the positions of the end portions on the back side B side are also the same. ing.
  • the bending guide part group 50 is located closer to the crotch part C than the lower end part 31A of the ventral sheet member 31 which is an exterior body located on the ventral part A. Further, the bending guide portion group 50 is not present on the back side portion. That is, the bending guide part group 50 is located only between the lower end part 31 ⁇ / b> A of the abdominal sheet member 31 and the lower end part 32 ⁇ / b> A of the back side sheet member 32.
  • the end portion T 1 (see FIG. 5) on the back seat member 32 side, the second region 42 and the first region 41 in the absorbent core 5.
  • the distance to the boundary position T 2 (see FIG. 5) is set to 5 mm or more and 50 mm or less, particularly 10 mm or more and 45 mm or less, liquid diffusion occurs only in the first area 41 which is a high basis weight area. Since it becomes easy, it is preferable. As a result, the absorbent core 5 is easily bent and deformed, and the feeling of wearing the diaper 1 is further improved.
  • the bending guidance part group 50 is absent on the back side B side from the position of the stool excretion part of the wearer because the excreted stool is difficult to adhere to the wearer's skin.
  • “Non-existing on the dorsal side B side” means that the positions of the end portions on the dorsal side B side of all the bending guiding parts constituting the bending guiding part group 50 are from the position of the stool excretion part of the wearer. Is also biased to the ventral side A side.
  • the entire surface of the absorbent core 5 is covered with a liquid permeable sheet such as a core wrap sheet.
  • a liquid permeable sheet such as a core wrap sheet.
  • the liquid-permeable sheet is disposed opposite to the skin facing surface side and the non-skin facing surface side of the absorbent core.
  • the central bending guide part 51 and the side part are arranged between the liquid permeable sheet disposed opposite to the space and the space between the liquid permeable sheets where the constituent material of the absorbent core 5 is absent.
  • Bending guide portions 52a and 52b are defined. In other words, the central bending guiding part 51 and the side bending guiding parts 52a and 52b are closed spaces.
  • the absorbent core 5 used in the diaper 1 of the present embodiment uses, for example, a stacking drum having recesses formed on the peripheral surface, and deposits hydrophilic fibers such as pulp fibers and water-absorbing polymer particles in the recesses.
  • hydrophilic fibers such as pulp fibers and water-absorbing polymer particles in the recesses.
  • FIG. 6 shows an absorbent core 5 used in another embodiment of the present invention. Note that the description in detail with respect to FIG. 5 described above is appropriately applied to points that are not particularly described with reference to FIG. In FIG. 6, the same members as those in FIG. 5 are denoted by the same reference numerals.
  • the absorbent core 5 of the present embodiment also has an abdominal side A, a back side B, and a crotch C corresponding to the diaper 1. While the absorbent core of the embodiment shown in FIG. 5 has two regions of the first region 41 and the second region 42 having different basis weights, the absorbent core 5 of the embodiment shown in FIG.
  • the apparatus further includes a third area 43 having a basis weight lower than that of the first area 41 and higher than that of the second area 42.
  • the first region 41 includes at least the crotch part C.
  • the second region 42 includes at least the back side portion B.
  • the third region 43 includes at least the ventral portion A. “The third region 43 includes at least the ventral portion A” means that the third region 43 includes the ventral portion A and may include other regions, for example, the crotch portion C.
  • the basis weight of the first region 41 is the same in any part (except for the bending guide group 50).
  • the basis weights of the second region 42 and the third region 43 are the same in any part.
  • the high basis weight first region 41 is formed so as to include the crotch portion C
  • the low basis weight second region 42 is formed so as to include the back side portion B
  • the medium basis weight third region 43 is included. Is formed so as to include the ventral portion A, when the absorbent core 5 absorbs and swells the excreted liquid, the degree of swelling of the second basis area 42 of low basis weight, and the medium basis weight The degree of swelling of the third region 43 can be suppressed.
  • the absorbent core 5 can suppress pressure on the waist and abdomen of the wearer due to swelling. This is particularly advantageous when the wearer is lying on his / her face down.
  • the basis weight of the third region 43 is preferably 105% or more with respect to the basis weight of the second region 42, and preferably 110% or more. Further preferred. Moreover, it is preferable that it is 200% or less, and it is still more preferable that it is 180% or less.
  • the basis weight of the third region 43 is preferably 105% or more and 200% or less, and more preferably 110% or more and 180% or less with respect to the basis weight of the second region 42.
  • the basis weight of the third region 43 is preferably 50% or more, and more preferably 60% or more with respect to the basis weight of the first region 41.
  • the basis weight of the third region 43 is preferably 50% or more and 95% or less, and more preferably 60% or more and 85% or less with respect to the basis weight of the first region 41.
  • the length of the first region 41 is preferably 40% or more of the entire length of the absorbent core 5, and preferably 45% or more. More preferably, it is more preferably 50% or more. Further, it is preferably 80% or less, more preferably 75% or less, and further preferably 70% or less.
  • the length of the first region 41 is preferably 40% or more and 80% or less of the entire length of the absorbent core 5, more preferably 45% or more and 75% or less, and 50% or more and 70% or less. More preferably.
  • the length of the second region 42 is preferably 10% or more and 50% or less, and more preferably 15% or more and 40% or less of the entire length of the absorbent core 5.
  • the length of the third region 43 is preferably 2.5% or more and 30% or less, and more preferably 5% or more and 20% or less of the entire length of the absorbent core 5.
  • the ratio of the basis weight of the third region 43 to the basis weight of the first region 41 and the basis weight of the second region 42 is as described above, and the basis weight of the third region 43 that is the middle basis weight region itself.
  • the value is preferably 125 g / m 2 or more, and more preferably 200 g / m 2 or more. Moreover, it is preferable that it is 800 g / m ⁇ 2 > or less, and it is still more preferable that it is 750 g / m ⁇ 2 > or less.
  • the basis weight of the third region 43 is preferably 125 g / m 2 or more and 800 g / m 2 or less, and more preferably 200 g / m 2 or more and 750 g / m 2 or less.
  • the basis weight of the first region 41 and the basis weight of the second region 42 are the same as in the embodiment shown in FIG.
  • region 43 is a place where the basic weight measured about the whole absorptive core 5 is compared.
  • the basis weight of hydrophilic fibers such as pulp fibers and the basis weight of the water-absorbing polymer are preferably higher in the order of the second region 42, the third region 43, and the first region 41. Such a basis weight relationship is preferable because it can improve the absorption capacity near the urination point and is effective not only in preventing liquid leakage but also in suppressing gel blocking.
  • a difference in thickness due to a difference in basis weight may or may not have occurred. Also good.
  • the difference in thickness due to the difference in basis weight that is, whether or not a step is generated between the regions 41 and 42 and between the regions 41 and 43 is not critical for achieving the advantageous effects of the present invention. Regardless of whether or not such a step is generated, it is preferable that the absorbent core 5 is formed of a single structure also in this embodiment. The advantage of constituting the absorbent core 5 from a single structure is the same as that of the embodiment shown in FIG.
  • the absorptive core 5 has the bending induction
  • the bending guide part group 50 is located closer to the crotch part C than the lower end part 31A of the ventral sheet member 31 which is an exterior body located on the ventral part A. Further, the bending guide portion group 50 is not present on the back side portion.
  • the bending guide part group 50 is located only between the lower end part 31 ⁇ / b> A of the abdominal sheet member 31 and the lower end part 32 ⁇ / b> A of the back side sheet member 32.
  • FIG. 7 shows still another embodiment of the present invention. Note that the description in detail with respect to FIGS. 5 and 6 described above is appropriately applied to points that are not particularly described with reference to FIG. In FIG. 7, the same members as those in FIGS. 5 and 6 are denoted by the same reference numerals.
  • the absorptive core 5 shown in FIG. 7 has the 1st area
  • the first region 41 includes at least the crotch part C.
  • the second region 42 includes a ventral second region 42A including at least the ventral portion A and a dorsal second region 42B including at least the dorsal portion B.
  • the first region 41 includes at least the crotch portion C means that the first region 41 includes the crotch portion C, and other regions such as a part of the abdominal part A and a part of the dorsal part B. It means that it may contain.
  • the ventral second region 42A includes at least the ventral portion A means that the ventral second region 42A includes the ventral portion A and further includes other regions such as the crotch portion C. Means good.
  • the dorsal second region 42B includes at least the dorsal portion B” means that the dorsal second region 42B includes the dorsal portion B and further includes other regions such as the crotch portion C. Means good.
  • the term “second region 42” refers to both the abdominal second region 42A and the dorsal second region 42B.
  • the absorbent core 5 has a vertically long and substantially rectangular shape in plan view.
  • the longitudinal direction of the absorbent core 5 coincides with the body longitudinal direction X.
  • the first region 41 has a higher basis weight than the second region 42.
  • the basis weight of the first region 41 is the same in any part (however, the bending guide group is excluded).
  • the basis weight of the second region 42 is the same in any part.
  • the basis weights of the ventral second region 42A and the dorsal second region 42B are substantially the same. “Substantially the same” means that the difference in basis weight is less than ⁇ 10%.
  • the extension portion 35E in the outer layer sheet material 35 constituting the ventral sheet member 31 and / or the dorsal sheet member 32 described above has a length L along the longitudinal direction X of the main body.
  • the diaper 1 of the present embodiment is particularly suitable as a diaper for a low-age infant before being able to do yes.
  • the term “old age” as used herein refers to an infant up to 12 months of age or an infant weighing up to 8000 g.
  • the basis weight of the first region 41 is preferably 110% or more with respect to the basis weight of the second region 42, and preferably 120% or more. Further preferred. Further, it is preferably 400% or less, and more preferably 300% or less.
  • the basis weight of the first region 41 is preferably 110% or more and 400% or less, and more preferably 120% or more and 300% or less with respect to the basis weight of the second region 42.
  • the length of the first region 41 is preferably 40% or more of the entire length of the absorbent core 5, and preferably 45% or more. More preferably, it is more preferably 50% or more. Further, it is preferably 80% or less, more preferably 75% or less, and further preferably 70% or less.
  • the length of the first region 41 is preferably 40% or more and 80% or less of the entire length of the absorbent core 5, more preferably 45% or more and 75% or less, and 50% or more and 70% or less. More preferably.
  • the length of the ventral second region 42A and the dorsal second region 42B is preferably 10% or more and 30% or less of the entire length of the absorbent core 5, and is preferably 12% or more and 28% or less. More preferably, it is 15% or more and 25% or less.
  • the ventral second region 42A and the length of the dorsal second region 42B are different, the ventral second region 42A may be longer, or the dorsal second region 42B may be longer. Also good.
  • the ratio of the basis weight of the first region 41 and the basis weight of the second region 42 is as described above, and the value of the basis weight itself of the second region 42 that is the low basis weight region is 100 g / m 2 or more.
  • it is 120 g / m 2 or more, and more preferably 150 g / m 2 or more.
  • it is preferably 600 g / m 2 or less, further preferably 550 g / m 2 or less, and still more preferably 500 g / m 2 or less.
  • the basis weight of the second region 42 is preferably 100 g / m 2 or more and 600 g / m 2 or less, more preferably 120 g / m 2 or more and 550 g / m 2 or less, and 150 g / m 2 or more and 500 g / m 2 or less. More preferably, it is m 2 or less.
  • the basis weight of the first region 41 on condition that the ratio of the basis weight and the basis weight of the second region 42 of the first region 41 is within the above range, 150 g / m 2 or more 900 g / m 2 preferably less, and more preferably still more preferably 180 g / m 2 or more 850 g / m 2 or less, 200 g / m 2 or more 800 g / m 2 or less.
  • the magnitude relation of the basic weight of the 1st field 41 mentioned above and the 2nd field 42 is a place where the basic weight measured about the whole absorptive core 5 is compared, pulp fiber etc. which constitute absorptive core 5
  • the first region 41 is preferably higher than the second region 42 with respect to the basis weight of the hydrophilic fiber and the basis weight of the water-absorbing polymer. That is, it is preferable that the basis weight of the hydrophilic fiber constituting the first region 41 is higher than the basis weight of the hydrophilic fiber constituting the second region 42. Further, the basis weight of the water-absorbing polymer constituting the first region 41 is preferably higher than the basis weight of the water-absorbing polymer constituting the second region 42.
  • Such a basis weight relationship is preferable because it can improve the absorption capacity near the urination point and is effective not only in preventing liquid leakage but also in suppressing gel blocking.
  • the basis weight of the hydrophilic fiber in the ventral second region 42A and the basis weight of the hydrophilic fiber in the dorsal second region 42B are substantially the same.
  • the basis weight of the water absorbent polymer in the region 42A and the basis weight of the water absorbent polymer in the back-side second region 42B are substantially the same. The meaning of “substantially” is as described above.
  • the first region 41 has a bending guide portion group 50 composed of a plurality of bending guide portions 51, 52 a, 52 b extending in the longitudinal direction X of the main body.
  • the bending guide portion group 50 includes a central bending guide portion 51 located in the central region in the body width direction Y, and a pair of side bending guide portions 52a and 52b located on both sides of the central bending guide portion 51. Consists of.
  • the bending guide portions 51, 52a, and 52b constituting the bending guide portion group 50 may have the same or different lengths along the main body longitudinal direction X. In particular, it is preferable that the lengths of the side bending guide portions 52a and 52b are the same because the fit at the time of mounting becomes better.
  • the length of each side bending guide 52a, 52b is preferably 50 mm or more, and more preferably 70 mm or more. Moreover, it is preferable that it is 300 mm or less, and it is still more preferable that it is 250 mm or less.
  • the length of each side bending guide 52a, 52b is preferably 50 mm or more and 300 mm or less, and more preferably 70 mm or more and 250 mm or less.
  • the positions of the end portions on the ventral side A side may be the same or different.
  • the position of the end portion on the back side B side may be the same or different.
  • the positions of the end portions on the ventral side A side of the side bending guide portions 52 a and 52 b are the same, and therefore the positions of the end portions on the back side B side are also the same. ing.
  • the central bending guiding part 51 is shorter than the side bending guiding parts 52a and 52b, and efficiently absorbs excrement without leaking in a young infant with little movement before yes. This is preferable from the viewpoint that the fitting property can be improved. From the viewpoint of making this effect even more prominent, the length of the central bending guiding portion 51 is preferably 20% or more of the length of the side bending guiding portions 52a and 52b, more preferably 30% or more. More preferably. Further, it is preferably 80% or less, and more preferably 70% or less. For example, the length of the central bending guiding portion 51 is preferably 20% to 80% and more preferably 30% to 70% of the length of the side bending guiding portions 52a and 52b. .
  • the both ends of the center bending guide part 51 are longer than the both end parts of the side part bending guide parts 52a and 52b. It can be positioned closer to the center in the direction X. Alternatively, one end portion of both end portions of the central bending guide portion 51 is closer to the end in the main body longitudinal direction X than one end portion of both end portions of the side bending guide portions 52a and 52b. Can be located. Furthermore, as shown to Fig.5 (a), the position of one edge part of the both ends of the center bending induction
  • the position of the end near the ventral side A among the both ends of the central bending guide 51 is set to the side bending guide 52a. , 52b, it is preferable to match the position of the end portion near the ventral side portion A because the fit property at the crotch is further improved. In this case, it is preferable that the edge part near the back side part B of the both ends of the center bending guide part 51 is located on the crotch side from the urination point.
  • the pants-type disposable diaper 1 of the present embodiment is a so-called split-type pants-type disposable diaper.
  • the diaper 1 is a pants-type disposable diaper including an absorbent main body 2 including a vertically long absorbent body 23 and an exterior body 3 fixed to the non-skin facing surface side of the absorbent main body 2.
  • the diaper 1 includes an absorbent main body 2 and an exterior body 3 positioned on the non-skin facing surface side of the absorbent main body 2. And the exterior body 3 of the diaper 1 has the abdominal sheet member 31 and the back sheet member 32.
  • the diaper 1 has both side portions along the longitudinal direction (X direction) of the ventral sheet member 31 and both side portions along the longitudinal direction (X direction) of the back side seat member 32, and a pair of side seal portions S. , S, a waist opening WO, and a pair of leg openings LO, LO.
  • a known joining method such as heat sealing, high frequency sealing, ultrasonic sealing, adhesive, or the like is used.
  • the abdominal sheet member 31 and the back sheet member 32 constituting the exterior body 3 are each a rectangle that is long in the width direction (Y direction) when the diaper 1 is unfolded and expanded (see FIG. 9). It has a shape.
  • the ventral sheet member 31 and the dorsal sheet member 32 are both disposed on the skin facing surface side of the outer layer sheet material 35 that forms the outermost surface of the diaper and the outer layer sheet material 35.
  • An inner layer sheet material 36 and a plurality of thread-like elastic members 33 disposed between the sheets 35 and 36 are provided.
  • the outer layer sheet material 35 and the inner layer sheet material 36 are formed in the same shape and size, and each has a rectangular shape that is long in the width direction (Y direction) when the diaper 1 is unfolded and expanded (see FIG. 9). is doing.
  • the plurality of elastic members 33 extend in the width direction (Y direction), respectively, and are arranged at intervals in the longitudinal direction (X direction) of the diaper.
  • the outer layer sheet material 35 and the inner layer sheet material 36 are superposed with the contours of each other being coincident with each other, and are joined to each other by a large number of fused portions (not shown) arranged in a dotted pattern.
  • the plurality of elastic members 33 are arranged between the outer layer sheet material 35 and the inner layer sheet material 36 so as not to pass through the fused portion (not shown).
  • each of the abdominal sheet member 31 and the back sheet member 32 has a weakly functioning area where the elastic member 33 has a reduced expansion / contraction function in an area overlapping the absorbent main body 2.
  • the plurality of elastic members 33 in the abdominal sheet member 31 and the back sheet member 32 are each divided into a plurality of pieces in the region overlapping the absorbent main body 2, and the elastic members are finely divided. 33 no longer has a contracting force and forms a weakly functionalized region in the ventral seat member 31 and the dorsal seat member 32.
  • the absorbent main body 2 of the diaper 1 has a rectangular absorbent body 23 that is long in the longitudinal direction (X direction), and a liquid-permeable surface sheet disposed on the skin facing surface side of the absorbent body 23. 21 and a liquid-impervious back sheet 22 disposed on the non-skin facing surface side of the absorbent body 23, and as shown in FIG. 9, is formed in a rectangular shape that is long in the longitudinal direction (X direction). ing.
  • the diaper 1 As shown in FIGS. 9 to 11, on both sides along the longitudinal direction (X direction) of the absorbent main body 2, it is liquid-resistant or water-repellent and ventilated over the entire length of the absorbent main body 2.
  • Three-dimensional gathers 4 and 4 made of a sex material are formed.
  • a three-dimensional gather forming elastic member 42 In the vicinity of the free end of each three-dimensional gather 4, a three-dimensional gather forming elastic member 42 is arranged in an extended state. While the diaper 1 is worn, the three-dimensional gather forming elastic member 42 contracts to raise the three-dimensional gather 4 to form a gather on the crotch C, and outward from the absorbent main body 2 in the width direction (Y direction). The outflow of liquid to the is prevented.
  • the absorbent body 23 of the absorbent main body 2 includes an absorbent core (not shown) in which water-absorbing polymer particles are held in an aggregate of fibers such as pulp fibers, and a core that covers the absorbent core (not shown). It consists of a wrap sheet (not shown).
  • This absorptive core has the same structure as any one of the absorptive cores shown in FIGS.
  • the absorptive core which comprises the absorber 23 has the thickness of the back side B side (the part which overlaps with the back side seat member 32 of the back side B) as shown in FIG.
  • the ventral side portion It is preferably 10% or more and 75% or less of the thickness of the A side (portion overlapping the ventral sheet member 31 of the ventral side A), and is 15% or more and 50% or less of the thickness of the ventral side A side. More preferably.
  • the thickness of the absorbent core 5 on the back side B side is preferably 0.5 mm or more and 6 mm or less, and more preferably 1 mm or more and 5 mm or less.
  • the thickness of the absorptive core on the ventral part A side is preferably 1 mm or more and 9 mm or less, and more preferably 2 mm or more and 7.5 mm or less.
  • the thickness of the absorbent core is measured under no load.
  • the back side sheet member 32 of the back side B and the absorbent main body 2 overlap with the absorbent core on the back side B side or the absorbent core on the abdominal side A side. Or a portion where the abdominal sheet member 31 of the abdominal side A and the absorbent main body 2 overlap, in the case of a disposable diaper other than the split type, unfold the pants-type disposable diaper
  • the exterior body 3 is divided into three equal parts in the X direction, and divided into a back side part, a crotch part, and an abdomen side part, and the absorbent core disposed on the divided back side part or the divided part. It means the absorptive core arranged on the ventral part.
  • the absorptive core which comprises the absorber 23 has the basis weight of the back side part B side (part which overlaps the back side sheet
  • the basis weight of the ventral side portion A is smaller than the basis weight of the portion overlapping the ventral side sheet member 31 of the ventral side portion A.
  • the amount is preferably 10% to 75%, more preferably 20% to 65% of the basis weight on the ventral part A side.
  • the basis weight of the absorbent core on the back side B side is preferably 50 g / m 2 or more and 500 g / m 2 or less, and more preferably 75 g / m 2 or more and 400 g / m 2 or less. preferable.
  • the basis weight of the absorbent core on the ventral side A side is preferably 150 g / m 2 or more and 900 g / m 2 or less, and more preferably 200 g / m 2 or more and 800 g / m 2 or less.
  • the absorbent core constituting the absorbent body 23 has a density on the back side B side (portion overlapping the back side sheet member 32 of the back side B) on the ventral side A side ( From the viewpoint of making the dorsal region more flexible, the density of the ventral region A side is 10%. % Or more and 75% or less, more preferably 20% or more and 65% or less of the density on the ventral side A side.
  • the density of the absorbent core on the back side B side is preferably 0.01 g / cm 3 or more and 0.75 g / cm 3 or less, and 0.03 g / cm 3 or more and 0.55 g / cm. More preferably, it is 3 or less.
  • the density of the absorbent core on the ventral part A side is preferably 0.1 g / cm 3 or more and 1 g / cm 3 or less, and preferably 0.15 g / cm 3 or more and 0.8 g / cm 3 or less. Is more preferable.
  • the absorbent body 23 on the back side portion B side (the portion overlapping the back side sheet member 32 of the back side portion B) has an absorptive polymer content in the ventral side portion A. It is less than the content of the absorbent polymer constituting the absorbent body 23 on the side (portion overlapping the ventral sheet member 31 of the ventral side A) so that the dorsal side is more flexible. From the viewpoint of making it, it is preferably 10% or more and 75% or less of the content of the absorbent polymer on the ventral side A side, and 20% or more and 65% or less of the content of the absorbent polymer on the ventral side A side More preferably it is.
  • the content of the absorbent polymer on the back side B side is preferably 50 g / m 2 or more and 250 g / m 2 or less, and more preferably 75 g / m 2 or more and 200 g / m 2 or less. preferable.
  • the content of the absorbent polymer on the ventral side A side is preferably 100 g / m 2 or more and 500 g / m 2 or less, and more preferably 150 g / m 2 or more and 400 g / m 2 or less.
  • the content of the absorbent polymer on the back side B side or the content of the absorbent polymer on the ventral side A side is measured as follows.
  • ⁇ Measurement method of content of absorbent polymer on back side B side or content of absorbent polymer on ventral side A Cut the ventral side A side and the back side B side of the absorbent body into 5 points and 10 cm ⁇ 10 cm in size, respectively.
  • the sample is cut out in a range where it can be taken, and the area of the sample is measured using an image analyzer. These samples are each dried at 90 ° C. for 8 hours or more, equilibrated at room temperature, and weighed.
  • Each sample is filled in a pre-weighed mesh bag, and the mesh bag is immersed in an aqueous solution containing 4% by mass ascorbic acid and 0.02% by mass riboflavin, and the aqueous solution is sufficiently contained in the sample. Make it.
  • the mesh bag is taken out from the aqueous solution, and the sample is subjected to low molecular weight treatment with sunlight (ultraviolet rays) for 8 hours ⁇ 3 days.
  • the components solubilized by the low molecular weight treatment are separated and removed by washing with water from the mesh bag.
  • the mesh bag is immersed again in the aqueous solution and the molecular weight reduction treatment by sunlight is repeated. .
  • the processing is terminated when the color of the polymer has completely disappeared for all the samples and the slimy feeling at the time of washing with water has disappeared.
  • the mesh bag is dewatered by centrifuging for 10 minutes at a speed of 800 rpm with a centrifuge. After drying at 90 ° C. for 18 hours or more and equilibrating at room temperature, the weight of the mesh bag containing the residue is weighed.
  • the value obtained by subtracting the weight of the mesh bag from the weight after the molecular weight reduction treatment is taken as the pulp fiber content in the sample, and the value obtained by subtracting the weight of the pulp fiber from the pre-measured sample weight is converted per unit area.
  • the value is the content of the water-absorbing polymer.
  • the absorbent body 23 has bending guide portions 51, 52a, and 52b as shown in FIG.
  • the bending guiding portions 51, 52a, 52b extend in the longitudinal direction (X direction) over the entire crotch region C.
  • the bending guide portions 51, 52a, 52b are juxtaposed at equal intervals in the width direction (Y direction).
  • the diaper 1 has both end portions 2 a and 2 b in the longitudinal direction (X direction) of the absorbent main body 2 in the width direction of the exterior body 3 and the exterior body 3. It is covered with a belt-like sheet 6 extending in the (Y direction), and is fixed between the exterior body 3 and the belt-like sheet 6 via an adhesive 7. More specifically, in the diaper 1, as shown in FIG. 12, the absorbent main body 2 has the abdominal side A end portion 2 a side overlapped with the abdominal sheet member 31, and the non-skin facing surface is the exterior. The inner layer sheet material 32 constituting the body 3 is fixed via an adhesive (not shown).
  • the other end part 2b side by the side of the back side B has overlapped with the back side sheet member 32, and the non-skin opposing surface constitutes the inner layer sheet material which comprises the exterior body 3.
  • 32 is fixed via an adhesive (not shown). That is, in the diaper 1, the absorptive main body 2 is covered with a belt-like sheet 6 in which the skin facing surface on the one end 2a side on the abdominal side A is extended in the width direction (Y direction), and the one end 2a is an adhesive. It is fixed between the ventral sheet member 31 and the belt-like sheet 6 via 7a.
  • the absorptive main body 2 is covered with a belt-like sheet 6 in which the skin facing surface on the other end 2b side on the back side B side extends in the width direction (Y direction), and the other end 2b is It is fixed between the back sheet member 32 and the belt-like sheet 6 via the adhesive 7b.
  • the belt-like sheet 6 that covers both ends 2a and 2b in the longitudinal direction (X direction) of the absorbent main body 2 is the abdominal sheet member when the diaper 1 is unfolded and extended (see FIG. 9).
  • 31 or the back side sheet member 32 extends over the entire region in the width direction (Y direction) and has a long rectangular shape in the width direction (Y direction).
  • the width (length in the X direction) of the belt-like sheet 6 is preferably 10% or more and 60% or less, and 15% or more with respect to the length in the X direction of the ventral sheet member 31 or the back sheet member 32. More preferably, it is 50% or less.
  • the belt-like sheet 6 covers the one end 2a on the ventral side A side of the absorbent main body 2 and is fixed to the ventral sheet member 31 via an adhesive 7a.
  • the belt-like sheet 6 covers the other end 2b on the back side B of the absorbent main body 2 and is fixed to the back side sheet member 32 via an adhesive 7b.
  • both end portions (both side portions along the X direction) of the belt-like sheet 6 are formed on both side portions along the longitudinal direction (X direction) of the ventral sheet member 31 and the longitudinal direction (X When the two side portions along the direction) are joined to form the pair of side seal portions S, S, the two side portions of the ventral seat member 31 and the both sides of the back seat member 32 are joined at the same time. Yes.
  • the application amount of the adhesive 7 b on the back side B is smaller than the application amount of the adhesive 7 a on the abdominal side A.
  • the application amount of the adhesive 7b is preferably 2/25 or more, more preferably 2/15 or more of the application amount of the adhesive 7a, from the viewpoint of further preventing the absorbent polymer from falling off and improving the wearing feeling.
  • the application amount of the adhesive 7a is 4/5 or less, more preferably 2/3 or less, and the application amount of the adhesive 7a is preferably 2/25 or more and 4/5 or less, Preferably they are 2/15 or more and 2/3 or less.
  • the coating amount of the adhesive 7b is preferably 2 g / m 2 or more 10 g / m 2 or less, 2 g / m 2 or more 5 g / m 2 or less .
  • the coating amount of the adhesive 7a from the same viewpoint, it is more preferable that at 5 g / m 2 or more 25 g / m 2 or less is preferable, 5 g / m 2 or more 15 g / m 2 or less.
  • the application amount of the adhesive 7b on the back side B or the application amount of the adhesive 7a on the abdominal side A is measured as follows.
  • the adhesives 7 a and 5 b straddle the end edges 2 a 1 and 2 b 1 in the longitudinal direction (X direction) of the absorbent main body 2. It is applied to the belt-like sheet 6.
  • the adhesive 7b is a belt-like sheet straddling the edge 2b1 of the other end portion 2b on the back side portion B side of the absorbent main body 2, as shown in FIGS. 6 is applied to the non-skin facing surface.
  • the adhesive 7a is formed on the non-banded sheet 6 across the edge 2a1 of the one end 2a on the abdominal side A side of the absorbent main body 2 as shown in FIGS.
  • the adhesive 7b straddles the edge 2b1 of the other end 2b of the absorbent main body 2 means that the adhesive 7b extends in the longitudinal direction (X direction) around the edge 2b1. And that it intersects the edge 2b1.
  • the adhesive 7a also extends in the longitudinal direction (X direction) around the edge 2a1 of the one end 2a of the absorbent main body 2 and intersects the edge 2a1.
  • the application amount of the adhesive 7b on the back side B is smaller than the application amount of the adhesive 7a on the abdominal side A.
  • the adhesive 7b The area is lower than the application area of the adhesive 7a.
  • the application area of the adhesive 7b is preferably 2/25 or more, more preferably 2/15 or more of the application area of the adhesive 7a from the viewpoint of further preventing the absorbent polymer from falling off and improving the wearing feeling.
  • the application area of the adhesive 7a is 4/5 or less, more preferably 2/3 or less, and the application area of the adhesive 7a is preferably 2/25 or more and 4/5 or less, Preferably they are 2/15 or more and 2/3 or less.
  • the application area of the adhesive 7b is preferably 1 cm 2 or more and 60 cm 2 or less, and more preferably 3 cm 2 or more and 40 cm 2 or less from the same viewpoint.
  • the application area of the adhesive 7a is preferably 5 cm 2 or more and 80 cm 2 or less, and more preferably 8 cm 2 or more and 60 cm 2 or less from the same viewpoint.
  • the area of the adhesive 7b being lower than the application area of the adhesive 7a means that the application line of the adhesive 7b is thinner than the application line of the adhesive 7a, and the adhesive. This means that at least one of the application numbers of 7b is smaller than the application number of the adhesive 7a is satisfied.
  • the adhesive 7 b on the back side B is formed in the vicinity of the edge 2 b 1 of the other end 2 b of the absorbent body 2, and the absorbent main body 2 and the back seat member. In other words, it is applied to the region where 32 overlaps, in other words, only in the entire width direction (Y direction) of the absorbent main body 2 in a line drawing a spiral extending in the width direction (Y direction).
  • the number of coating lines for drawing a spiral is preferably one to three. In the diaper 1, two are formed. The application lines that draw these two spirals are arranged intermittently so that they partially overlap each other in the X direction.
  • the adhesive agent 7a of the abdominal part A is the absorptive main body 2 and the abdominal sheet member in the edge 2a1 vicinity of the one end part 2a of the absorptive main body 2.
  • the adhesive agent 7a of the abdominal part A is the absorptive main body 2 and the abdominal sheet member in the edge 2a1 vicinity of the one end part 2a of the absorptive main body 2.
  • Four are formed.
  • the application lines that draw these four spirals are arranged intermittently so that they partially overlap each other in the X direction.
  • the thickness of each coating line that draws the spiral of the adhesive 7 b on the back side B is the thickness of the coating line that draws the spiral of the adhesive 7 a on the ventral side A. It is thinner than the thickness.
  • the number of application lines that draw the spiral of the adhesive 7b on the back side B is smaller than the number of application lines that draw the spiral of the adhesive 7a on the abdominal side A. Therefore, in the diaper 1, the area of the adhesive 7b is lower than the application area of the adhesive 7a.
  • the adhesives 7 a and 7 b are formed in a linear shape that draws a spiral as described above.
  • the linear shape that draws a zigzag a linear shape that extends linearly in the Y direction, It may be formed in a dot shape or an ⁇ shape.
  • the application area of the adhesive 7b on the back side B or the application area of the adhesive 7a on the abdominal side A is measured as follows.
  • the area where the adhesive is applied In the case where the adhesive application pattern in the area where the adhesive is applied is applied spirally or in the form of dots by spraying, etc., the area where the adhesive is applied, The area colored with toner is measured under a microscope having an image processing function. In the observation of the portion colored with the toner using a microscope, five areas of 25 mm 2 are arbitrarily extracted, and the area of the portion colored with the toner is calculated in detail by observation and image processing.
  • each part of the diaper 1 mentioned above is demonstrated.
  • various sheet materials conventionally used for absorbent articles such as disposable diapers are used. It can use without a restriction
  • a nonwoven fabric As the nonwoven fabric, an air-through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a single layer nonwoven fabric of a melt blown nonwoven fabric, a laminated nonwoven fabric in which these layers are laminated, or the like can be used.
  • a sheet in which a nonwoven fabric and a film are integrated can be used as the outer layer sheet material 31 and the inner layer sheet material 32.
  • the surface sheet 21, the back sheet 22, the absorber 23, the three-dimensional gather forming sheet material 41 and the like constituting the absorbent main body 2 various kinds of materials conventionally used for absorbent articles such as disposable diapers are particularly limited. Can be used.
  • a single layer or multilayer nonwoven fabric, a perforated film, or the like can be used.
  • a single-layer resin film or a laminate of a resin film and a nonwoven fabric can be used, and a moisture-permeable sheet is preferable from the viewpoint of air permeability.
  • Absorbent body 23 is obtained by coating an absorbent core formed by holding water-absorbing polymer particles on an aggregate of fibers such as pulp fibers (which may be a nonwoven fabric) with a core wrap sheet made of tissue paper or the like. Can be used.
  • a three-dimensional gather forming sheet material 41 a water-repellent single layer or multilayer nonwoven fabric or the like can be used.
  • Examples of materials for forming the elastic member 33 constituting the outer package 3 and the three-dimensional gathering elastic member 42 constituting the absorbent main body 2 include synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA , Stretchable polyolefin, polyurethane and the like can be used.
  • As the form of the elastic member it is preferable to use a thread-like (thread rubber etc.) or string-like (flat rubber hook etc.) having a cross section of a rectangle, square, circle, polygon, etc., or a multifilament type thread-like one. it can.
  • the belt-like sheet 6 various sheet materials conventionally used for absorbent articles such as disposable diapers can be used without particular limitation, and a melt blown nonwoven fabric is preferably used from the viewpoint of sweat absorption and prevention of liquid leakage.
  • the basis weight of the belt-like sheet 6 is preferably 5 g / m 2 or more and 30 g / m 2 or less, more preferably 10 g / m 2 or more and 25 g / m 2 or less.
  • Each member can be fixed using an adhesive or heat fusion.
  • the adhesive including the adhesive 7 to be used, any adhesive can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers.
  • a hot melt adhesive can be used.
  • hot melt adhesives include blocks such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-styrene copolymer (SEBS).
  • SIS styrene-isoprene-styrene block copolymer
  • SBS styrene-butadiene-styrene block copolymer
  • SEBS styrene-ethylene-butylene-styrene copolymer
  • Copolymer-based hot melt adhesives may be mentioned.
  • heat fusion if it is
  • the diaper 1 is configured such that both end portions 2 a and 2 b in the longitudinal direction (X direction) of the absorbent main body 2 are separated from the exterior body 3 and the exterior body 3 in the width direction (Y direction). And is fixed between the exterior body 3 and the belt-like sheet 6 via adhesives 7a and 7b. Therefore, the end portions 2a, 2b of the absorbent main body 2 do not directly touch the wearer's skin, and the absorbent polymer constituting the absorbent body 23 from the end portions 2a, 2b can be prevented from falling off. Usability is improved. Further, as shown in FIGS.
  • the diaper 1 has an application amount of the adhesive 7 b on the back side B that fixes the belt-like sheet 6, and the amount of the adhesive 7 a on the belly side A that fixes the belt-like sheet 6. It is less than the coating amount. Therefore, the breathability is improved in the dorsal side B rather than the ventral side A, and it is considered with respect to sweat that is easier to scrub in the dorsal region than in the abdominal region at the time of wearing, and the feeling of wear is further increased. improves.
  • seat 6 is end part edge 2a1, 2b1 of the longitudinal direction (X direction) of the absorptive main body 2 as shown in FIG.10 and FIG.11. Is applied to the belt-like sheet 6. Therefore, it is possible to reliably prevent the absorbent polymer that constitutes the absorber 23 from the end portions 2a and 2b from falling off, and the usability is further improved.
  • each adhesive agent 7a, 7b is apply
  • the air permeability is improved and the wearing feeling is further improved.
  • the area of the adhesive 7 b is lower than the application area of the adhesive 7 a, and further consideration is given to sweat that is more likely to be worn toward the dorsal region than the ventral region when worn. The wearing feeling is further improved.
  • the diaper 1 since the basic weight of the absorptive core of the abdominal part A side where a wearer's urine tends to concentrate is larger than the basic weight of the absorptive core of the back side part B side, Can be sufficiently absorbed. And since the basis weight of the absorptive core on the back side B side is smaller than the basis weight of the absorptive core on the abdominal side A side, the adhesive 7b of the back side B with a small amount of application, The belt-like sheet 6 can be sufficiently fixed, and the absorbent polymer can be prevented from falling off. In particular, since the content of the absorbent polymer in the absorbent body 23 on the back side B side is smaller than the content of the absorbent polymer in the absorbent body 23 on the ventral side A side, Has the effect of sex.
  • dorsal part B side to the abdominal part A side is efficient over the whole area
  • a split-type pants-type disposable in which the exterior body 3 includes a ventral sheet member 31 on the ventral part A and a back sheet member 32 on the back part B. It is a diaper, but instead of this, a pants type having an integrated outer layer body 2 in which at least the outer layer sheet 21 constituting the exterior body 3 is continuous over the abdominal side A, the crotch region C and the back side B. It is good also as a disposable diaper.
  • the diaper 1 of the present embodiment includes a backside sheet member 32 and an abdominal sheet member 31, with the adhesive 7 b on the back side B and the adhesive 7 a on the abdomen A. Is applied only to the region where the absorbent main body 2 overlaps, but at least one of them covers the entire width direction (Y direction) of the back side sheet member 32 or the abdominal side sheet member 31, in other words, a belt-like shape. It may be applied over the entire Y direction of the sheet 6.
  • the adhesive 7 is apply
  • FIG. 13 shows a pants-type disposable diaper 1 having a configuration different from that of the diaper described so far.
  • the exterior body 3 is divided into the abdominal sheet member 31 and the back sheet member 32.
  • the absorbent core 5 in the diaper 1 shown in the figure has the structure shown in FIG. Instead of this, the absorbent core 5 having the configuration shown in FIG. 6 or 7 may be adopted. Also in the diaper of this embodiment, the same advantageous effect as the diaper of the embodiment described so far is exhibited.
  • the present invention has been described based on its preferred embodiments, but the present invention is not limited to the above embodiments, and can be appropriately changed within the scope of ordinary knowledge of those skilled in the art.
  • the rear body extension region 32E extending from the lower end portion 32A of the back seat member 32 is formed, but the rear body extension region 32E may not be formed.
  • pant-type absorbent article of the present invention is suitably used as a pants-type disposable diaper for adults, children or infants.
  • a vertically long absorbent main body including an absorbent core and an exterior body disposed on the non-skin facing surface side of the absorbent main body and fixed to the absorbent main body, and disposed on the stomach side of the wearer It has an abdominal part, a crotch part arranged in the crotch part, and a dorsal part arranged on the dorsal side, and is located in the exterior body ventral region and the back side part located in the abdominal side part of the exterior body
  • a pants-type absorbent article in which both side edges along the longitudinal direction of the body of the exterior body back side region are joined to each other to form a waist opening and a pair of leg openings,
  • the absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
  • the first region includes at least a crotch portion; the second region includes at least a
  • the bending guide part group consists of a central bending guide part located in the center region in the width direction of the absorbent core, and a pair of side bending guide parts located on both sides of the central bending guide part, The bending guide part group is located closer to the crotch than the lower end part of the exterior body located on the abdominal side part, and the pant type absorption in which the bending guide part group is absent on the back side part Sex goods.
  • the length of the first region is preferably 50% or more of the entire length of the absorbent core, more preferably 60% or more, still more preferably 70% or more, and 90% or less.
  • ⁇ 5> The pants-type absorbent article according to any one of ⁇ 1> to ⁇ 4>, wherein the basis weight of the first region is the same at any part when viewed along the width direction of the absorbent main body.
  • ⁇ 6> The pants-type absorbent article according to any one of ⁇ 1> to ⁇ 5>, wherein the basis weight of the second region is the same in any part when viewed along the width direction of the absorbent main body.
  • the basis weight of the first region is preferably 120% or more with respect to the basis weight of the second region, more preferably 140% or more, and preferably 250% or less, and 230% or less.
  • the basis weight of the second region is preferably 100 g / m 2 or more, more preferably 150 g / m 2 or more, still more preferably 200 g / m 2 or more, and 600 g / m 2 or less.
  • the basis weight of the first region 41 is preferably 150 g / m 2 or more and 900 g / m 2 or less, more preferably 200 g / m 2 or more and 850 g / m 2 or less, and more preferably 250 g / m 2 or more and 800 g / m 2.
  • the absorbent core comprises hydrophilic fibers, The pants-type absorption according to any one of ⁇ 1> to ⁇ 9>, wherein the basis weight of the hydrophilic fiber constituting the first region is higher than the basis weight of the hydrophilic fiber constituting the second region. Sex goods.
  • the absorbent core includes a water-absorbing polymer; The pants-type absorption according to any one of ⁇ 1> to ⁇ 10>, wherein the basis weight of the water-absorbing polymer constituting the first region is higher than the basis weight of the water-absorbing polymer constituting the second region. Sex goods.
  • ⁇ 12> A third region having a lower basis weight than the first region and a higher basis weight than the second region;
  • the length of the first region is preferably 40% or more of the entire length of the absorbent core, more preferably 45% or more, still more preferably 50% or more, and 80% or less.
  • the third region includes at least the ventral side;
  • the basis weight of the third region is preferably 50% or more with respect to the basis weight of the first region, more preferably 60% or more, and preferably 95% or less, and 85% or less.
  • the pants-type absorbent article according to any one of the above items ⁇ 1> to ⁇ 15>, more preferably.
  • the third region includes at least the ventral side;
  • the basis weight of the third region is preferably 125 g / m 2 or more, more preferably 200 g / m 2 or more, more preferably 800 g / m 2 or less, and 750 g / m 2 or less.
  • ⁇ 18> The underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 17>, wherein the bending guide section group is absent on the back side of the stool excretion part of the wearer.
  • each bending guide portion is preferably 50 mm or more, more preferably 100 mm or more, more preferably 350 mm or less, and even more preferably 300 mm or less ⁇ 1> to ⁇ 21>
  • the underpants type absorbent article of any one of. ⁇ 23> Each side bending guide part extends in parallel with the central bending guide part, The underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 22>, wherein the distance between each side bending guide portion and the central bending guide portion is the same.
  • ⁇ 24> The position of the end part on the ventral part side of each bending guide part is the same, and the position of the end part on the dorsal part side is also the same.
  • Pants-type absorbent article Any one of ⁇ 1> to ⁇ 23> Pants-type absorbent article.
  • ⁇ 25> The underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 24>, wherein the absorbent core is composed of a single-layer structure.
  • the liquid-permeable sheet which covers this absorptive core is oppositely arranged on the skin opposing surface side and non-skin opposing surface side of an absorptive core, A central folding guide portion is defined by the liquid-permeable sheet disposed oppositely and a space that is located between the liquid-permeable sheets and in which the constituent material of the absorbent core is absent.
  • the underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 25>.
  • each bent guiding section wherein one end of each bent guiding section, the end portion T 1 of the dorsal sheet member side, the distance between the boundary position T 2 of the second region and the first region of the absorbent core, or 5mm
  • the pants-type absorbent article according to any one of ⁇ 1> to ⁇ 26>, which is 50 mm or less, particularly 10 mm or more and 45 mm or less.
  • the exterior body includes a ventral sheet member positioned on the ventral part and a dorsal sheet member positioned on the dorsal part,
  • the underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 27>, wherein the absorbent main body is fixed across both sheet members.
  • ⁇ 29> The pants-type absorbent article according to the above ⁇ 28>, wherein a rear body extending region extending further downward in the longitudinal direction is continuously provided from a lower end portion in the longitudinal direction of the back side sheet member.
  • the extension region gathers are formed by extending the extension region elastic member between the outer layer sheet material and the inner layer sheet material. Pants-type absorbent article.
  • ⁇ 31> A length extending portion in the outer layer sheet constituting the year dorsal sheet member along the body longitudinal direction X and L 1, the length along the body longitudinal direction X of the region overlapping the second region of the extending portion when the L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of ⁇ 100 or more and 100% or 50% or less, especially 60% or more and 100% or less, to the ⁇ 28> to ⁇ 30>
  • ⁇ 32> The underpants-type absorbent article according to any one of ⁇ 1> to ⁇ 26>, wherein the exterior body is disposed from the abdominal side to the back side through the crotch.
  • a vertically long absorbent main body including an absorbent core and an exterior body disposed on the non-skin facing surface side of the absorbent main body and fixed to the absorbent main body, and disposed on the stomach side of the wearer It has an abdominal part, a crotch part arranged in the crotch part, and a dorsal part arranged on the dorsal side, and is located in the exterior body ventral region and the back side part located in the abdominal side part of the exterior body
  • a pants-type absorbent article in which both side edges along the longitudinal direction of the body of the exterior body back side region are joined to each other to form a waist opening and a pair of leg openings,
  • the absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
  • the first region includes at least a crotch portion, the second region includes at least a ventral portion and a dorsal portion,
  • the first region has a bending guide
  • the bending guide part group consists of a central bending guide part located in the center region in the width direction of the absorbent core, and a pair of side bending guide parts located on both sides of the central bending guide part, The bending guide part group is located closer to the crotch than the lower end part of the exterior body located on the abdominal side part, and the pant type absorption in which the bending guide part group is absent on the back side part Sex goods.
  • the pants-type absorbent article according to ⁇ 33> wherein the length of the first region is 40% or more and 80% or less of the entire length of the absorbent core.
  • the length of the first region is preferably 40% or more of the entire length of the absorbent core, more preferably 45% or more, still more preferably 50% or more, and 80% or less.
  • the pants-type absorbent article according to ⁇ 33> or ⁇ 34> preferably 75% or less, and more preferably 70% or less.
  • the lengths of the second region on the ventral side and the second region on the dorsal side are each independently preferably 10% or more and 30% or less, and 12% or more and 28% or less of the total length of the absorbent core.
  • the pants-type absorbent article according to any one of the above ⁇ 33> to ⁇ 35> more preferably 15% to 25%.
  • the basis weight of the first region is preferably 110% or more with respect to the basis weight of the second region, more preferably 120% or more, and preferably 400% or less, and 300% or less.
  • the pants-type absorbent article according to any one of ⁇ 33> to ⁇ 38>, which is more preferably present.
  • the basis weight of the second region is preferably 100 g / m 2 or more, more preferably 120 g / m 2 or more, still more preferably 150 g / m 2 or more, and 600 g / m 2 or less.
  • the basis weight of the first region is preferably 150 g / m 2 or more and 900 g / m 2 or less, more preferably 180 g / m 2 or more and 850 g / m 2 or less, and 200 g / m 2 or more and 800 g / m 2.
  • the absorbent core comprises hydrophilic fibers, The pants-type absorption according to any one of ⁇ 33> to ⁇ 41>, wherein the basis weight of the hydrophilic fibers constituting the first region is higher than the basis weight of the hydrophilic fibers constituting the second region. Sex goods.
  • the absorbent core includes a water-absorbing polymer; The pants-type absorption according to any one of ⁇ 33> to ⁇ 42>, wherein the basis weight of the water-absorbing polymer constituting the first region is higher than the basis weight of the water-absorbing polymer constituting the second region. Sex goods.
  • Sex goods. ⁇ 45> The absorbent core comprises hydrophilic fibers and a water-absorbing polymer; The basis weight of the hydrophilic fibers in the second region of the ventral side and the basis weight of the hydrophilic fibers in the second region of the back side are substantially the same, Any one of the above ⁇ 33> to ⁇ 44>, wherein the basis weight of the water absorbent polymer in the second region of the ventral side and the basis weight of the water absorbent polymer in the second region of the back side are substantially the same.
  • ⁇ 46> The underpants-type absorbent article according to any one of the above ⁇ 33> to ⁇ 45>, wherein the bending guide part group is absent on the dorsal side from the position of the stool excretion part of the wearer.
  • ⁇ 47> The underpants-type absorbent article according to any one of ⁇ 33> to ⁇ 46>, wherein the widths of the bending guide portions constituting the bending guide portion group are the same.
  • each bending guide portion is preferably 1 mm or more, more preferably 3 mm or more, more preferably 20 mm or less, and even more preferably 15 mm or less ⁇ 33> to ⁇ 47 >
  • each side bending guide part is preferably 50 mm or more, more preferably 70 mm or more, more preferably 300 mm or less, and further preferably 250 mm or less ⁇ 33> Thru
  • the length of the central bending guiding portion is preferably 20% or more of the length of the side bending guiding portion, more preferably 30% or more, and preferably 80% or less, 70 % Of the pants-type absorbent article according to any one of the above ⁇ 33> to ⁇ 54>.
  • the position of the end closer to the ventral side of both ends of the central bending guide part is the position of the end closer to the ventral side of both ends of the side bending guide part.
  • the pants-type absorbent article according to any one of ⁇ 33> to ⁇ 55>, which is matched with the position. ⁇ 57> The pants-type absorbent article according to any one of ⁇ 33> to ⁇ 56>, wherein the absorbent core is composed of a single-layer structure.
  • the liquid-permeable sheet which covers this absorptive core is oppositely arranged on the skin opposing surface side and non-skin opposing surface side of an absorptive core,
  • a central folding guide portion is defined by the liquid-permeable sheet disposed oppositely and a space that is located between the liquid-permeable sheets and in which the constituent material of the absorbent core is absent.
  • each bent guiding section wherein one end of each bent guiding section, the end portion T 1 of the dorsal sheet member side, the distance between the boundary position T 2 of the second region and the first region of the absorbent core, or 5mm
  • the exterior body includes a ventral sheet member positioned on the ventral part and a dorsal sheet member positioned on the dorsal part,
  • a rear body extending region extending further downward in the longitudinal direction is continuously provided from a lower end portion in the longitudinal direction of the back side sheet member.
  • ⁇ 62> A length extending portion in the outer layer sheet constituting the back-side sheet member along the body longitudinal direction X and L 1, the length along the body longitudinal direction X of the region overlapping the second region of the extending portion when the L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of ⁇ 100 or more and 100% or 50% or less, especially 60% or more and 100% or less, the ⁇ 60> or ⁇ 61>.
  • ⁇ 63> The underpants-type absorbent article according to any one of the above ⁇ 33> to ⁇ 59>, wherein the exterior body is disposed from the abdominal side to the back side through the crotch.
  • Each said adhesive agent is an underpants type absorbent article as described in said ⁇ 64> currently straddled across the edge part edge of the longitudinal direction of the said absorptive main body.
  • the application area of the adhesive on the dorsal side is preferably 2/25 or more, more preferably 2/15 or more of the application area of the adhesive on the ventral part, and the application area of the adhesive on the ventral part.
  • the application area of the adhesive on the back side is preferably 1 cm 2 or more and 60 cm 2 or less, more preferably 3 cm 2 or more and 40 cm 2 or less, and the application area of the adhesive on the ventral side is , preferably at 5 cm 2 or more 80 cm 2 or less, still more preferably 8 cm 2 or more 60cm 2 or less, the ⁇ 64> to pant-type absorbent article according to any one of ⁇ 67>.
  • the application amount of the adhesive on the back side is 2/25 or more and 4/5 or less of the application amount of the adhesive on the abdominal side, and the application amount of the adhesive on the back side is 2 g / m 2 or more.
  • a is 10 g / m 2 or less, pant-type absorbent according to any one of from the coating amount of the adhesive of the ventral said ⁇ 64> not be 5 g / m 2 or more 25 g / m 2 or less ⁇ 68> Sex goods.
  • the application amount of the adhesive on the dorsal side is preferably 2/25 or more, more preferably 2/15 or more of the application amount of the adhesive on the abdominal side, and the application amount of the adhesive on the abdominal side.
  • the pants-type absorbent article according to any one of the above items ⁇ 64> to ⁇ 69>, preferably 4/5 or less, more preferably 2/3 or less.
  • the application amount of the adhesive on the back side is preferably 2 g / m 2 or more and 10 g / m 2 or less, more preferably 2 g / m 2 or more and 5 g / m 2 or less, and the ventral part.
  • the application amount of the adhesive is preferably 5 g / m 2 or more and 25 g / m 2 or less, more preferably 5 g / m 2 or more and 15 g / m 2 or less.
  • the underpants type absorbent article according to any one of the above.
  • the absorptive core which comprises the said absorber on the back side part side has a low basic weight compared with the basic weight of the absorptive core which comprises the said absorber on the ventral part side.
  • the basic weight of the back side part side is 10% or more and 75% or less of the basic weight of the ventral part side, and 20% of the basic weight of the ventral part side.
  • the basis weight of the absorbent core constituting the absorber on the back side is preferably 50 g / m 2 or more and 500 g / m 2 or less, and more preferably 75 g / m 2 or more and 400 g / m 2 or less.
  • the basis weight of the absorbent core constituting the absorber on the ventral side is preferably 150 g / m 2 or more and 900 g / m 2 or less, and 200 g / m 2 or more and 800 g / m 2 or less.
  • the pants-type absorbent article according to any one of ⁇ 64> to ⁇ 73>, which is more preferably present.
  • the content of the absorbent polymer constituting the absorber on the back side is preferably 50 g / m 2 or more and 250 g / m 2 or less, and more preferably 75 g / m 2 or more and 200 g / m 2 or less.
  • the content of the absorbent polymer constituting the absorbent on the ventral side is preferably 100 g / m 2 or more and 500 g / m 2 or less, and 150 g / m 2 or more and 400 g / m 2 or less.
  • the pants-type absorbent article according to any one of the above items ⁇ 64> to ⁇ 76>, more preferably.
  • the absorptive core constituting the absorbent body has a thickness on the dorsal side smaller than that on the ventral side,
  • the absorbent core constituting the absorbent body preferably has a back side portion thickness of 10% to 75% of the ventral side thickness, and 15% to 50% of the ventral side thickness.
  • the pants-type absorbent article according to any one of the above items ⁇ 64> to ⁇ 77>, which is more preferably as follows.
  • the thickness of the absorbent core constituting the absorber on the back side portion side is preferably 0.5 mm or more and 6 mm or less, more preferably 1 mm or more and 5 mm or less, and the absorber on the ventral side portion side.
  • the thickness of the absorbent core constituting the pants-type absorption according to any one of the above ⁇ 64> to ⁇ 78> is preferably 1 mm to 9 mm, and more preferably 2 mm to 7.5 mm. Sex goods. ⁇ 80>
  • the absorbent core that constitutes the absorbent body has a density on the back side that is smaller than the density on the ventral side,
  • the absorbent core constituting the absorbent body preferably has a back side density of 10% to 75% of the density on the ventral side, and 20% to 65% of the density on the ventral side.
  • the pants-type absorbent article according to any one of the above items ⁇ 64> to ⁇ 79> which is more preferably as follows.
  • the density of the absorbent core constituting the absorber on the back side is preferably 0.01 g / cm 3 or more and 0.75 g / cm 3 or less, and 0.03 g / cm 3 or more and 0.55 g / cm. 3 or less, and the density of the absorbent core constituting the absorbent on the ventral side is preferably 0.1 g / cm 3 or more and 1 g / cm 3 or less, 0.15 g
  • the width of the belt-like sheet (the length in the X direction) is preferably 10% or more and 60% or less, and preferably 15% or more and 50% or less with respect to the length in the width direction (X direction) of the exterior body.
  • the pants-type absorbent article according to any one of the above items ⁇ 64> to ⁇ 81>, more preferably.
  • a pants-type absorbent article comprising an absorbent main body that is divided into an abdominal part, a back side part, and a crotch part including a vertically long absorbent body, and an exterior body that is fixed to the non-skin facing surface side of the absorbent main body Because Both ends in the longitudinal direction of the absorbent main body are covered with the exterior body and a belt-like sheet extending in the lateral direction separately from the exterior body, and the exterior body and the belt-like sheet are interposed via an adhesive.
  • Fixed between The adhesive on the back side is an underpants type absorbent article in which the application amount is smaller than the application amount of the adhesive on the abdominal side.
  • the absorptive core 5 used for the pants-type disposable diaper shown in FIGS. 1 to 4 was manufactured using a known fiber stacking drum.
  • the absorptive core 5 was made of a single layer structure having the configuration shown in FIG.
  • the length of the absorbent core 5 was 390 mm and the width was 135 mm.
  • the bending guide part was formed in three strips, each having a length of 200 mm and a width of 10 mm.
  • the distance from the end part of the ventral part A to the end part of the bending guide part was 75 mm.
  • the pitch between the central bending guiding portion and the side bending guiding portion was 26 mm.
  • the length of the first region 41 including the ventral side portion A and the crotch portion C was 290 mm, and the length of the second region including the back side portion B was 100 mm.
  • the basis weight of the pulp fibers in the first region 41 at 192 g / m 2, the basis weight of the water-absorbing polymer was 250 g / m 2.
  • the basis weight of the pulp fiber in the second region 42 was 108 g / m 2 , and the basis weight of the water-absorbing polymer was 132 g / m 2 .
  • the absorbent core 5 having this configuration was wrapped with a liquid permeable sheet (basis weight 16 g / m 2 ) made of tissue paper to obtain an absorbent body.
  • the absorbent core 5 having a two-layer structure was manufactured using a known stacking drum.
  • the first region 41 has a two-layer structure
  • the second region 42 has a single-layer structure.
  • the upper layer including only the first region 41 was laminated to form the absorbent core 5 of this example.
  • the basis weight and dimensions were the same as in Example 1.
  • the absorbent core 5 was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  • Example 3 the absorptive core 5 used for the pants-type disposable diaper shown in FIGS. 1 to 4 was manufactured using a known fiber stacking drum.
  • the absorptive core 5 was made of a single layer structure having the configuration shown in FIG.
  • the length of the absorbent core 5 was 390 mm and the width was 135 mm.
  • the bending guide part was formed in three strips, each having a length of 200 mm and a width of 10 mm.
  • the distance from the end part of the ventral part A to the end part of the bending guide part was 75 mm.
  • the pitch between the central bending guiding portion and the side bending guiding portion was 26 mm.
  • the length of the first region 41 including the crotch portion C was 240 mm
  • the length of the second region including the back side portion B was 100 mm
  • the length of the third region including the ventral side portion A was 50 mm.
  • the basis weight of the pulp fibers in the first region 41 at 192 g / m 2 the basis weight of the water-absorbing polymer was 250 g / m 2.
  • the basis weight of the pulp fiber in the second region 42 was 108 g / m 2 , and the basis weight of the water-absorbing polymer was 132 g / m 2 .
  • the basis weight of the pulp fiber in the third region 43 was 140 g / m 2
  • the basis weight of the water absorbent polymer was 170 g / m 2 .
  • the absorbent core 5 having this configuration was wrapped with a liquid permeable sheet (basis weight 16 g / m 2 ) made of tissue paper to obtain an absorbent body.
  • Example 4 the absorbent core 5 having a three-layer structure was manufactured using a known stacking drum.
  • the first region 41 has a three-layer structure
  • the third region 42 has a two-layer structure
  • the second region 42 has a single-layer structure.
  • an intermediate layer including only the first region 41 and the third region 43 is stacked on the lower layer including the first region 41, the second region 42, and the third region 43, and the first region is formed on the intermediate layer.
  • the upper layer containing only 41 was laminated to form the absorbent core 5 of this example.
  • the basis weight and dimensions were the same as in Example 1.
  • the absorbent core 5 was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  • Comparative Example 2 This comparative example is an example in which the bending induction portion group is not formed in the absorbent core in the comparative example 1. Therefore, the absorbent core has a simple flat structure. The absorbent core was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  • Comparative Example 3 This comparative example is an example in which the bending guide part group was not formed in the absorbent core in Example 3.
  • the absorbent core was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  • the underpants type disposable diaper of the form shown in FIG. 1 was manufactured using the absorber obtained by the Example and the comparative example. About this diaper, the difficulty of liquid leakage and the mounting pressure at the crotch were measured by the following methods. The results are shown in Table 1 below. Note that an air-through nonwoven fabric having a basis weight of 25 g / m 2 was used as the top sheet of the diaper, and a polyethylene film having a basis weight of 18 g / m 2 was used as the back sheet.
  • the diaper shown in FIG. 1 was cut at the position of the side seal portion S and developed into a flat shape.
  • a diaper in an unfolded state with the topsheet facing upward was placed on a sloped base at an angle of 30 ° so that the ventral side was downward.
  • Artificial urine was injected at 5 g / second every 5 minutes, and the number of times until the diaper could not hold the liquid was measured.
  • the injection position was a position 130 mm inside from the end of the abdominal absorber toward the crotch side.
  • Example 5 the absorptive core 5 used for the pants-type disposable diaper shown in FIGS. 1 to 4 was manufactured using a known fiber stacking drum.
  • the absorptive core 5 was made of a single layer structure having the configuration shown in FIG.
  • the length of the absorbent core 5 was 320 mm and the width was 120 mm.
  • the bending guide part was formed in three strips, and the central bending part guide part had a length of 80 mm and a width of 10 mm.
  • the side bent portion guiding portion has a length of 160 mm and a width of 10 mm. The positions of the end portion of the central bent portion guiding portion near the ventral side portion A and the end portion of the side bent portion guiding portion near the ventral side portion A were matched.
  • This position was separated from the edge of the absorbent core near the ventral side A by 80 mm.
  • the pitch between the central bending guiding portion and the side bending guiding portion was 22.5 mm.
  • the length of the first region 41 including the ventral portion A was 194 mm, and the lengths of the ventral second region 42A and the dorsal second region 42B were both 63 mm.
  • the basis weight of the pulp fiber in the first region 41 was 222 g / m 2
  • the basis weight of the water absorbent polymer was 222 g / m 2 .
  • the basis weight of the pulp fibers in the second region 42 was 111 g / m 2
  • the basis weight of the water-absorbing polymer was 111 g / m 2 .
  • the absorbent core 5 having this configuration was wrapped with a liquid permeable sheet (basis weight 16 g / m 2 ) made of tissue paper to obtain an absorbent body.
  • Comparative Example 5 This comparative example is an example in which the central bending guide portion is not formed in the fifth embodiment. Otherwise, the absorbent core was obtained in the same manner as in Example 5. The absorbent core was wrapped with the same tissue paper as in Example 5 to obtain an absorbent body.
  • the underpants type disposable diaper of the form shown in FIG. 1 was manufactured using the absorber obtained by the Example and the comparative example. With respect to this diaper, the liquid absorption rate, the liquid diffusion area, and the crotch mounting pressure were measured by the following methods. The results are shown in Table 2 below.
  • the absorbent core is unlikely to swell locally, the liquid is evenly absorbed and hardly leaked, and the liquid is absorbed. Even if a feeling of wearing is not spoiled, a pants type absorbent article is provided.

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Abstract

The absorbent core (5) comprises at least a first region (41) and a second region (42) with differing basis weights. The first region (41) has a higher basis weight than the second region (42). The first region (41) comprises the crotch section (C) and the second region (42) comprises the back section (B). The first region (41) comprises a group of fold-inducing sections (50) obtained from multiple strip-shaped fold-inducing sections (51, 52a, 52b) that extend in the longitudinal direction. The group of fold-inducing sections (50) is obtained from a central fold-inducing section (51) and a pair of side fold-inducing sections (52a, 52b) located on either side of the central fold-inducing section (51). The group of fold-inducing sections (50) is located closer to the crotch section (C) than the lower edges (31A, 32A) of the outer covering (3) on the abdominal section (A) and said group of fold-inducing sections (50) is absent from the back section (B).

Description

パンツ型吸収性物品Pants-type absorbent article
 本発明はパンツ型吸収性物品に関する。 The present invention relates to a pants-type absorbent article.
 吸収性物品の吸収体における股下部の坪量を、それ以外の部位よりも高くしたり、股下部にスリットや溝などからなる折曲誘導部を形成したりする技術が知られている。例えば特許文献1には、吸収体が、股下部における幅方向中央部に高坪量部を有し、該高坪量部の両側に該高坪量部よりも低坪量の低坪量部を有しているパンツ型使い捨ておむつが記載されている。高坪量部は、吸収体の長手方向に延びるスリット、溝又は非積繊部からなる中央折曲誘導部を有し、低坪量部は、非積繊部からなる側部折曲誘導部を有している。吸収体の長手方向における腹側部側においては、中央折曲誘導部が、側部折曲誘導部の端部位置より延出している。一方、吸収体の長手方向における背側部側においては、側部折曲誘導部が、中央折曲誘導部の端部位置より延出している。 There are known techniques for making the basis weight of the crotch part of the absorbent body of the absorbent article higher than other parts, or forming a bending guide part made of a slit, a groove or the like in the crotch part. For example, in Patent Document 1, the absorbent body has a high basis weight portion at the center in the width direction at the crotch portion, and a low basis weight portion having a lower basis weight than the high basis weight portion on both sides of the high basis weight portion. A pants-type disposable diaper having the following is described. The high basis weight part has a central bending induction part consisting of a slit, a groove or a non-stacking fiber part extending in the longitudinal direction of the absorbent body, and the low basis weight part is a side part bending induction part consisting of a non-stacking fiber part. have. On the ventral side in the longitudinal direction of the absorbent body, the central bending guide part extends from the end position of the side bending guide part. On the other hand, on the dorsal side in the longitudinal direction of the absorber, the side bending guide part extends from the end position of the central bending guide part.
 特許文献2には、裏面シート側に本体吸収体を備え、表面シート側中高吸収体を備えた吸収体を有する吸収性物品が記載されている。中高吸収体は、装着者の排泄部に対向する領域に配置されており、その幅は本体吸収体よりも狭くなっている。中高吸収体はブロック状の吸収部が多数、互いに離間して規則正しく配置されてなる。中高吸収体は、隣り合うブロック状の吸収部間に、長手方向及び幅方向に規則的に形成された溝状部を有している。 Patent Document 2 describes an absorbent article having a main body absorber on the back sheet side and having an absorber having a top sheet side medium-high absorber. The middle / high absorber is disposed in a region facing the excretion portion of the wearer, and the width thereof is narrower than that of the main body absorber. The medium-high absorbent body has a large number of block-like absorbent parts, and is regularly spaced from each other. The middle-high absorbent body has a groove-shaped portion regularly formed in the longitudinal direction and the width direction between adjacent block-shaped absorbent portions.
特開2012-016435号公報JP 2012-016435 A 特開2012-125366号公報JP 2012-125366 A
 ところで吸収体はパルプ等の親水性繊維と、吸水性ポリマーの粒子との混合積繊体から構成されることが多いところ、このような構造の吸収体が液を吸収した場合には、吸液によって吸水性ポリマーが膨潤し、そのことに起因して吸収体も膨潤する。特に、高坪量の部位においては、低坪量の部位に比べて膨潤の程度が著しくなる。また、吸収体に折曲誘導部が形成されている場合には、折曲誘導部が変形の起点として作用して、膨潤による変形が促進されやすい。膨潤して変形した吸収体は、着用者の身体を圧迫して装着感を低下させたり、吸収性物品に配されている伸縮性のギャザーの伸縮性を阻害したり、液漏れの原因となったりすることがある。したがって、吸収体における高坪量の部位の形成位置や、折曲誘導部の形成位置は、これらの不都合が生じないように留意して決定する必要がある。しかし、上述した各特許文献に記載の技術では、高坪量の部位の形成位置や折曲誘導部の形成位置が満足すべきとは言えない場合があった。 By the way, the absorbent body is often composed of a mixed fiber of hydrophilic fibers such as pulp and water-absorbing polymer particles. When the absorbent body having such a structure absorbs liquid, As a result, the water-absorbing polymer swells, and as a result, the absorbent body also swells. In particular, in the high basis weight part, the degree of swelling becomes remarkable as compared with the low basis weight part. Moreover, when the bending guide part is formed in the absorber, the bending guide part acts as a starting point of deformation, and the deformation due to swelling is easily promoted. The swelled and deformed absorbent body compresses the wearer's body to reduce the wearing feeling, inhibits the stretchability of the stretchable gathers arranged in the absorbent article, or causes liquid leakage. Sometimes. Therefore, it is necessary to determine the formation position of the high basis weight portion and the formation position of the bending guide portion in the absorbent body so as not to cause these disadvantages. However, in the techniques described in the above-described patent documents, it may not be said that the formation position of the high basis weight portion or the formation position of the bending guide portion should be satisfied.
 本発明は、吸収性コアを含む縦長の吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体と固定されている外装体とを備え、着用者の腹側に配される腹側部、股間部に配される股下部及び背側に配される背側部を有し、該外装体における該腹側部に位置する外装体腹側領域及び該背側部に位置する外装体背側領域それぞれの本体長手方向に沿う両側縁部どうしが接合されて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吸収性物品を提供するものである。
 前記吸収性コアは、坪量の異なる第1領域及び第2領域を少なくとも有し、第1領域は第2領域よりも坪量が高い。
 第1領域は少なくとも股下部を含み、第2領域は少なくとも背側部を含む。
 第1領域は、吸収性コアの長手方向に延びる複数条の折曲誘導部からなる折曲誘導部群を有している。
 折曲誘導部群は、吸収性コアの幅方向中央域に位置する中央折曲誘導部と、該中央折曲誘導部の両側部に位置する一対の側部折曲誘導部とからなる。
 折曲誘導部群は、腹側部に位置する外装体における下端部よりも股下部寄りに位置しており、背側部には該折曲誘導部群が非存在となっている。
The present invention comprises a vertically long absorbent main body including an absorbent core, and an exterior body that is disposed on the non-skin-facing surface side of the absorbent main body and is fixed to the absorbent main body. An exterior body ventral region located on the stomach side of the exterior body and the back side of the exterior body A pants-type absorbent article in which both side edge portions along the main body longitudinal direction of each exterior body back side region located in the section are joined to each other to form a waist opening and a pair of leg openings.
The absorptive core has at least a first region and a second region having different basis weights, and the first region has a basis weight higher than that of the second region.
The first region includes at least a crotch portion, and the second region includes at least a dorsal side portion.
The first region has a bending guide portion group including a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
The bending guide part group is composed of a central bending guide part located in the central region in the width direction of the absorbent core and a pair of side bending guide parts located on both sides of the central bending guide part.
The bending guide part group is located closer to the crotch part than the lower end part of the exterior body located on the abdominal side part, and the bending guide part group is not present on the back side part.
 また本発明は、吸収性コアを含む縦長の吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体と固定されている外装体とを備え、着用者の腹側に配される腹側部、股間部に配される股下部及び背側に配される背側部を有し、該外装体における該腹側部に位置する外装体腹側領域及び該背側部に位置する外装体背側領域それぞれの本体長手方向に沿う両側縁部どうしが接合されて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吸収性物品であって、
 前記吸収性コアは、坪量の異なる第1領域及び第2領域を少なくとも有し、第1領域は第2領域よりも坪量が高く、
 第1領域は少なくとも股下部を含み、第2領域は少なくとも腹側部及び背側部を含むパンツ型吸収性物品を提供するものである。
 第1領域は、吸収性コアの長手方向に延びる複数条の折曲誘導部からなる折曲誘導部群を有している。
 折曲誘導部群は、吸収性コアの幅方向中央域に位置する中央折曲誘導部と、該中央折曲誘導部の両側部に位置する一対の側部折曲誘導部とからなる。
 折曲誘導部群は、腹側部に位置する外装体における下端部よりも股下部寄りに位置しており、背側部には該折曲誘導部群が非存在となっている。
The present invention also includes a vertically long absorbent main body including an absorbent core, and an exterior body disposed on the non-skin-facing surface side of the absorbent main body and fixed to the absorbent main body. An exterior body ventral region located on the abdominal side of the exterior body and the back A pants-type absorbent article in which both side edges along the longitudinal direction of the main body of the exterior body dorsal region located on the side are joined together to form a waist opening and a pair of leg openings,
The absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
The first region provides at least a crotch portion, and the second region provides a pants-type absorbent article including at least a ventral portion and a dorsal portion.
The first region has a bending guide portion group including a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
The bending guide part group is composed of a central bending guide part located in the central region in the width direction of the absorbent core and a pair of side bending guide parts located on both sides of the central bending guide part.
The bending guide part group is located closer to the crotch part than the lower end part of the exterior body located on the abdominal side part, and the bending guide part group is not present on the back side part.
図1は、本発明のパンツ型吸収性物品の一実施形態であるパンツ型使い捨ておむつの一例を示す斜視図である。FIG. 1 is a perspective view showing an example of a pants-type disposable diaper that is an embodiment of a pants-type absorbent article of the present invention. 図2は、図1に示すおむつを各部の弾性部材を伸長させて平面状に拡げた展開状態を示す肌当接面側(表面シート側)の平面図である。FIG. 2 is a plan view on the skin contact surface side (surface sheet side) showing a developed state in which the diaper shown in FIG. 図3は、図1に示すおむつの分解斜視図である。FIG. 3 is an exploded perspective view of the diaper shown in FIG. 図4は、図2のI-I線断面(本体幅方向に沿う断面)を模式的に示す断面図である。FIG. 4 is a cross-sectional view schematically showing a cross section taken along the line II of FIG. 図5(a)は、図1に示すおむつにおける吸収性コアの平面図であり、図5(b)は、図5(a)におけるb-b線断面図である。5 (a) is a plan view of the absorbent core in the diaper shown in FIG. 1, and FIG. 5 (b) is a cross-sectional view taken along the line bb in FIG. 5 (a). 図6(a)は、吸収性コアの別の形態の平面図であり、図6(b)、図6(c)及び図6(d)は、図6(a)におけるb-b線、c-c線及びd-d線断面図である。6 (a) is a plan view of another form of the absorbent core, and FIGS. 6 (b), 6 (c), and 6 (d) show the bb line in FIG. 6 (a), It is a cc line and dd line sectional view. 図7(a)は、吸収性コアの更に別の形態の平面図であり、図7(b)は、図7(a)におけるb-b線断面図である。FIG. 7A is a plan view of still another form of the absorbent core, and FIG. 7B is a cross-sectional view taken along the line bb in FIG. 7A. 図8は、本発明のパンツ型吸収性物品の別の実施形態を示す斜視図である。FIG. 8 is a perspective view showing another embodiment of the pant-type absorbent article of the present invention. 図9は、図8に示すパンツ型使い捨ておむつを展開して伸長させた状態を表面シート側から見た平面図である。FIG. 9 is a plan view of the underpants-type disposable diaper shown in FIG. 図10は、図9に示すパンツ型使い捨ておむつの背側領域の拡大平面図である。FIG. 10 is an enlarged plan view of a back side region of the pants-type disposable diaper shown in FIG. 9. 図11は、図9に示すパンツ型使い捨ておむつの腹側領域の拡大平面図である。FIG. 11 is an enlarged plan view of the ventral region of the pants-type disposable diaper shown in FIG. 9. 図12は、図9のI-I線断面図である。12 is a cross-sectional view taken along the line II of FIG. 図13は、本発明のパンツ型吸収性物品の別の実施形態を、各部の弾性部材を伸長させて平面状に拡げた展開状態を示す肌当接面側(表面シート側)の平面図である。FIG. 13 is a plan view on the skin contact surface side (surface sheet side) showing a developed state in which another embodiment of the pant-type absorbent article of the present invention is expanded in a flat shape by extending the elastic member of each part. is there.
発明の詳細な説明Detailed Description of the Invention
 以下、本発明のパンツ型吸収性物品を、その好ましい一実施形態であるパンツ型使い捨ておむつに基づき図面を参照して説明する。本実施形態のパンツ型使い捨ておむつ1は、図1ないし図3に示すように、吸収性コア5を含む縦長の吸収性本体2と、該吸収性本体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、着用時に着用者の腹側に配される腹側部A及び背側に配される背側部B並びにそれらの間に位置し着用者の股間部に配される股下部Cを本体長手方向Xに有し、外装体3における腹側部Aに位置する外装体腹側領域(後述する腹側シート部材31)及び背側部Bに位置する外装体背側領域(後述する背側シート部材32)それぞれの本体長手方向Xに沿う両側縁部3s,3sどうし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WO及び一対のレッグ開口部LO,LOが形成されている。 Hereinafter, the pants-type absorbent article of the present invention will be described with reference to the drawings based on a pants-type disposable diaper which is a preferred embodiment thereof. The pants-type disposable diaper 1 of the present embodiment is arranged on a vertically long absorbent main body 2 including an absorbent core 5 and a non-skin facing surface side of the absorbent main body 2 as shown in FIGS. 1 to 3. An exterior body 3 that fixes the absorbent main body 2, and is positioned between the abdominal side A disposed on the abdomen side of the wearer and the back side B disposed on the back side when worn, and between them. An exterior body ventral region (belt side sheet member 31 to be described later) and a back side portion having a crotch portion C arranged in the crotch portion of the wearer in the longitudinal direction X of the body and located on the abdominal side portion A of the exterior body 3 A pair of side seal portions S, S and a waist opening WO are formed by joining the side edge portions 3s, 3s along the main body longitudinal direction X of the exterior body back side region (back side seat member 32 described later) located in B. And a pair of leg openings LO, LO are formed.
 なお、本明細書において、肌対向面は、パンツ型吸収性物品及びその構成部材(例えば吸収性本体、吸収性コア)における着用時に着用者の肌側に向けられる面であり、非肌対向面は、パンツ型吸収性物品及び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(ショーツ等の着衣側)に向けられる面である。また、本体長手方向は、縦長の吸収性本体の長手方向であり、本体幅方向は、該本体長手方向と直交する方向である。 In the present specification, the skin facing surface is a surface that faces the wearer's skin when worn on a pants-type absorbent article and its constituent members (for example, an absorbent main body, an absorbent core), and is a non-skin facing surface. Is a surface directed to the side opposite to the skin side of the wearer (clothing side such as shorts) when worn on the pant-type absorbent article and its constituent members. Moreover, the main body longitudinal direction is the longitudinal direction of the vertically long absorbent main body, and the main body width direction is a direction orthogonal to the main body longitudinal direction.
 吸収性本体2は、該吸収性本体2の肌対向面を形成する液透過性の表面シート21、該吸収性本体2の非肌対向面を形成する液不透過性又は液難透過性の裏面シート22、及び両シート21,22間に介在配置された液保持性の吸収体23を含んで構成されており、X方向に長い矩形形状に形成されている。 The absorbent main body 2 includes a liquid-permeable surface sheet 21 that forms the skin-facing surface of the absorbent main body 2, and a liquid-impermeable or liquid-impermeable back surface that forms the non-skin-facing surface of the absorbent main body 2. The sheet 22 and the liquid-retaining absorbent 23 disposed between the sheets 21 and 22 are included, and are formed in a rectangular shape that is long in the X direction.
 吸収体23は、パルプ繊維等の親水性繊維の積繊体を主体とする吸収性コア5と、該吸収性コア5を被覆するコアラップシート(図示せず)とを含んで構成されている。吸収性コア5には、必要に応じ吸水性ポリマーの粒子が含有される。吸収性コア5に吸水性ポリマーの粒子が含有される場合には、パルプ繊維等の親水性繊維と吸水性ポリマーの粒子とを、両者の混合積繊体とすることができる。あるいは、パルプ繊維等の親水性繊維の積繊体におけるいずれかの部位に、吸水性ポリマーの粒子を層状に配置することもできる。 The absorbent body 23 is configured to include an absorbent core 5 mainly composed of a pile of hydrophilic fibers such as pulp fibers, and a core wrap sheet (not shown) that covers the absorbent core 5. . The absorbent core 5 contains water-absorbing polymer particles as necessary. When the absorbent core 5 contains water-absorbing polymer particles, hydrophilic fibers such as pulp fibers and water-absorbing polymer particles can be used as a mixed product. Alternatively, the water-absorbing polymer particles can also be arranged in a layer form at any part of the pile of hydrophilic fibers such as pulp fibers.
 表面シート21、裏面シート22及び吸収体23は、いずれもX方向に長い矩形形状であり、表面シート21及び裏面シート22が、吸収体23の長手方向Xの両端それぞれから長手方向Xの外方に延出した部分において接合され、X方向に長い矩形形状の吸収性本体2が形成される。 The top sheet 21, the back sheet 22, and the absorber 23 are all rectangular shapes that are long in the X direction, and the top sheet 21 and the back sheet 22 are outward in the longitudinal direction X from both ends in the longitudinal direction X of the absorber 23. The absorbent main body 2 having a rectangular shape that is long in the X direction is joined at the portion extending in the X direction.
 図2及び図4に示すように、吸収性本体2には、その肌対向面における本体長手方向Xに沿う左右両側部に、本体長手方向Xに沿って一対の立体ギャザー4,4が配されている。各立体ギャザー4は、着用時に少なくとも股下部Cにおいて、着用者の肌側に向かって起立する。各立体ギャザー4は、液抵抗性ないし撥水性の立体ギャザー形成用シート材41と、該シート材41に固定された立体ギャザー形成用弾性部材42とを含んで構成されている。シート材41は、1枚の帯状シートから形成されており、該シート材41の本体幅方向Yの一端部は、吸収性本体2の吸収体23と裏面シート22との間に配され、接着剤(図示せず)によって固定されている。一方、該シート材41の本体幅方向Yの他端部は、吸収体23の上方において、本体長手方向Xに延びる折曲線(図示せず)にて本体幅方向Yの外方側に折り返され、その折り返しによって相対向したシート間に、弾性部材42が本体長手方向Xに伸長した状態で接着剤を介して固定されて、立体ギャザー4が形成されている。 As shown in FIGS. 2 and 4, the absorbent main body 2 is provided with a pair of three-dimensional gathers 4 and 4 along the main body longitudinal direction X on the left and right sides along the main body longitudinal direction X on the skin facing surface. ing. Each three-dimensional gather 4 stands up toward the wearer's skin side at least in the crotch C when worn. Each three-dimensional gather 4 includes a liquid-resistant or water-repellent three-dimensional gather forming sheet material 41 and a three-dimensional gather forming elastic member 42 fixed to the sheet material 41. The sheet material 41 is formed from a single belt-like sheet, and one end portion of the sheet material 41 in the main body width direction Y is disposed between the absorbent body 23 and the back sheet 22 of the absorbent main body 2 and bonded. It is fixed by an agent (not shown). On the other hand, the other end of the sheet material 41 in the main body width direction Y is folded outwardly in the main body width direction Y by a folding line (not shown) extending in the main body longitudinal direction X above the absorber 23. The elastic member 42 is fixed via an adhesive in a state where the elastic member 42 extends in the main body longitudinal direction X between the sheets opposed to each other by the folding, so that the three-dimensional gather 4 is formed.
 外装体3は、シート材35,36と、該シート材35,36に固定された複数本の外装体形成用弾性部材33とを含んで構成されている。本実施形態における外装体3は、図1ないし図3に示すように、着用時に着用者の腹側に配される腹側シート部材31を含んでいる。また外装体3は、着用時に着用者の背側に配される背側シート部材32を含んでいる。両シート部材31,32は股下部Cを挟んで分割されている。腹側シート部材31と、背側シート部材32とは、長手方向X及び幅方向Yに沿う長さが同じになっている。また、背側シート部材32に関しては、該背側シート部材32の長手方向の下端部32Aから、更に長手方向の下方側に延出した後身頃延出域32Eが連設されている。つまり、背側シート部材32と後身頃延出域32Eとの境界部が、背側シート部材32における下端部32Aとなる。以下の説明では、背側シート部材32及び後身頃延出域32Eからなる部材のことを「後身頃部材32F」とも言う。 The exterior body 3 is configured to include sheet materials 35 and 36 and a plurality of exterior body forming elastic members 33 fixed to the sheet materials 35 and 36. As shown in FIGS. 1 to 3, the exterior body 3 in the present embodiment includes an abdominal sheet member 31 disposed on the abdomen side of the wearer when worn. Moreover, the exterior body 3 contains the back side sheet | seat member 32 distribute | arranged to a wearer's back side at the time of wear. Both sheet members 31 and 32 are divided with the crotch part C interposed therebetween. The ventral sheet member 31 and the back sheet member 32 have the same length along the longitudinal direction X and the width direction Y. Further, with respect to the back sheet member 32, a rear body extension region 32E extending further downward in the longitudinal direction from the lower end 32A in the longitudinal direction of the back sheet member 32 is continuously provided. That is, a boundary portion between the back side seat member 32 and the back body extension region 32 </ b> E becomes the lower end portion 32 </ b> A of the back side seat member 32. In the following description, the member composed of the back seat member 32 and the rear body extension region 32E is also referred to as “rear body member 32F”.
 本実施形態のパンツ型使い捨ておむつ1は、着用者の腹側に配される腹側シート部材31(外装体腹側領域)と、着用者の背側に配される背側シート部材32(外装体背側領域)と、両シート部材31,32に架け渡して固定された縦長の吸収性本体2とを備え、両シート部材31,32それぞれの本体長手方向Xに沿う両側縁部3s,3sどうし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WO及び一対のレッグ開口部LO,LOが形成されている。サイドシール部Sでは、腹側シート部材31と背側シート部材32とが、接着剤、ヒートシール、高周波シール、超音波シール等の公知の接合手段によって接合されている。 The pants-type disposable diaper 1 of the present embodiment includes an abdominal sheet member 31 (exterior body ventral region) disposed on the wearer's ventral side and a back sheet member 32 (exterior) disposed on the wearer's dorsal side. Body side area) and a longitudinally long absorbent main body 2 that is fixed over both the sheet members 31 and 32, and both side edges 3s and 3s along the longitudinal direction X of the main body of each of the sheet members 31 and 32. A pair of side seal portions S, S, a waist opening WO, and a pair of leg openings LO, LO are formed by joining together. In the side seal portion S, the ventral sheet member 31 and the dorsal sheet member 32 are joined by a known joining means such as an adhesive, a heat seal, a high frequency seal, and an ultrasonic seal.
 腹側シート部材31及び背側シート部材32の両側縁部3s,3sどうしを接合して一対のサイドシール部S,Sを形成するに際しては、腹側シート部材31の長手方向の外方側端縁31’と、背側シート部材32の長手方向の外方側端縁32’の位置を一致させて、両シート部材31,32の両側縁部3s,3sどうしを接合する。このようにして両シート部材31,32の両側縁部3s,3sどうしを接合すると、腹側シート部材31の長手方向Xに沿う下端部31Aの位置と、背側シート部材32の長手方向Xに沿う下端部32Aの位置とが一致する。更にこれらのシート部材31,32の下端部31A,32Aから、換言すればサイドシール部4の下端から、下方に向けて後身頃延出域32Eが垂下する。このように、腹側シート部材31及び背側シート部材32の下端部31A,32Aの位置は、サイドシール部4の下端部の位置と一致する。つまり、腹側シート部材31及び背側シート部材32の下端部31A,32Aとは、両シート部材31,32それぞれの本体長手方向Xに沿う両側縁部3s,3sどうしが接合されて一対のサイドシール部S,Sが形成されたときの、該サイドシール部Sの下端の位置のことである。そして本発明においては、腹側シート部材31における左右の下端部31Aを結んだ線を、腹側部Aと股下部Cとの境界部と定義する。また、背側シート部材32における左右の下端部32Aを結んだ線を、背側部Bと股下部Cとの境界部と定義する。したがって、後身頃部材32Fのうち、後身頃延出域32Eは、股下部Cに位置することになる。 When the pair of side seal portions S, S are formed by joining the side edge portions 3s, 3s of the ventral sheet member 31 and the dorsal seat member 32, the outer side end in the longitudinal direction of the ventral sheet member 31 is used. The positions of the edge 31 ′ and the outer side edge 32 ′ in the longitudinal direction of the back sheet member 32 are matched to join the side edges 3 s and 3 s of the sheet members 31 and 32 together. When the side edge portions 3 s and 3 s of both the seat members 31 and 32 are joined together in this way, the position of the lower end portion 31 </ b> A along the longitudinal direction X of the abdominal sheet member 31 and the longitudinal direction X of the back seat member 32. The position of the lower end portion 32A is aligned. Further, from the lower end portions 31A, 32A of these sheet members 31, 32, in other words, from the lower end of the side seal portion 4, a rear body extending area 32E hangs downward. As described above, the positions of the lower end portions 31 </ b> A and 32 </ b> A of the ventral side seat member 31 and the back side seat member 32 coincide with the positions of the lower end portions of the side seal portion 4. That is, the lower end portions 31A and 32A of the abdominal sheet member 31 and the back sheet member 32 are joined to each other by joining the side edge portions 3s and 3s along the main body longitudinal direction X of the both sheet members 31 and 32 to each other. It is the position of the lower end of the side seal portion S when the seal portions S, S are formed. In the present invention, a line connecting the left and right lower end portions 31A of the ventral side sheet member 31 is defined as a boundary portion between the ventral side portion A and the crotch portion C. Further, a line connecting the left and right lower end portions 32A of the back side seat member 32 is defined as a boundary portion between the back side portion B and the crotch portion C. Therefore, the back body extension area 32E of the back body member 32F is located in the crotch part C.
 腹側シート部材31及び後身頃部材32Fは、それぞれ、その非肌対向面(おむつ1の外面)を形成する外層シート材35と、該外層シート材35の内面側に配された内層シート材36と、両シート材35,36間に接着剤(図示せず)により固定された複数本の糸状又は帯状の弾性部材33とを含んで構成されており、図2に示す如きおむつ1の展開状態において、本体幅方向Yに長い矩形形状をなしている。両シート材35,36間は、所定部位において接着剤(図示せず)によって接合されている。腹側シート部材31及び後身頃部材32Fにおいては、それぞれ図2に示すように、複数本の弾性部材33は、本体幅方向Yに沿って略直線状に配され、本体幅方向Yに伸長した状態で、本体長手方向Xに所定間隔を置いて配されている。 The abdominal sheet member 31 and the back body member 32F are respectively an outer layer sheet material 35 that forms a non-skin facing surface (the outer surface of the diaper 1), and an inner layer sheet material 36 that is disposed on the inner surface side of the outer layer sheet material 35. And a plurality of thread-like or belt-like elastic members 33 fixed between the sheet members 35 and 36 by an adhesive (not shown), and the unfolded state of the diaper 1 as shown in FIG. In FIG. 1, the rectangular shape is long in the body width direction Y. The two sheet members 35 and 36 are joined to each other at a predetermined portion by an adhesive (not shown). In the ventral sheet member 31 and the back body member 32F, as shown in FIG. 2, the plurality of elastic members 33 are arranged substantially linearly along the main body width direction Y and extend in the main body width direction Y. In the state, they are arranged at a predetermined interval in the longitudinal direction X of the main body.
 外層シート材35は、図3に示すように、その本体幅方向Yの長さは内層シート材36のそれと同じであるが、本体長手方向Xの長さは内層シート材36のそれよりも長い。そのことに起因して、外層シート材35は、内層シート材36の本体長手方向Xの外方端36aから本体長手方向Xの外方へ延出する、延出部35Eを有している。腹側シート部材31及び後身頃部材32Fの外層シート材35の延出部35Eは、図2に示すように、内層シート材36側に折り返されており、その折り返しによって相対向したシート35(35E),36間に、吸収性本体2の本体長手方向Xの端部が配されている。相対向するシート35(35E),36間は、所定の部位において接着剤(図示せず)によって接合されている。 As shown in FIG. 3, the outer layer sheet material 35 has the same length in the main body width direction Y as that of the inner layer sheet material 36, but the length in the main body length direction X is longer than that of the inner layer sheet material 36. . As a result, the outer layer sheet material 35 has an extending portion 35 </ b> E that extends outward from the outer end 36 a in the main body longitudinal direction X of the inner layer sheet material 36. As shown in FIG. 2, the extended portion 35E of the outer layer sheet material 35 of the abdominal sheet member 31 and the back body member 32F is folded back toward the inner layer sheet material 36, and the sheet 35 (35E) facing each other by the folded back. ), 36, the end of the main body longitudinal direction X of the absorbent main body 2 is disposed. The sheets 35 (35E) and 36 facing each other are joined to each other by an adhesive (not shown) at a predetermined portion.
 腹側部A(腹側シート部材31)及び背側部B(背側シート部材32)それぞれにおけるウエスト部Dには、外層シート材35と内層シート材36との間に弾性部材33が伸長状態で固定されていることによって、ウエストギャザーが形成されている。腹側部Aのウエスト部Dの弾性部材33及び背側部Bのウエスト部Dの弾性部材33は、図3に示すように、腹側部A又は背側部Bの本体幅方向Yの全長にわたって連続的に延びており、その全体にわたって、本来有する伸縮性を発現可能になされている。ウエスト部Dは、着用者の腰回りに位置する部位であり、通常、おむつ1の腹側部Aにおける本体長手方向Xの外方端1a及びおむつ1の背側部Bにおける本体長手方向Xの外方端1bそれぞれから該おむつ1の本体長手方向Xの全長の1~15%の長さまでの領域である。 The elastic member 33 extends between the outer layer sheet material 35 and the inner layer sheet material 36 at the waist portion D in each of the ventral side portion A (belt side seat member 31) and the back side portion B (back side seat member 32). The waist gathers are formed by being fixed by. As shown in FIG. 3, the elastic member 33 of the waist part D of the ventral part A and the elastic member 33 of the waist part D of the back part B are the full length of the body width direction Y of the ventral part A or the back part B, as shown in FIG. It is possible to express the inherent stretchability throughout. The waist part D is a part located around the waist of the wearer. Usually, the outer end 1a of the body longitudinal direction X in the abdominal side A of the diaper 1 and the body longitudinal direction X of the back side B of the diaper 1 are arranged. This is a region from each outer end 1b to a length of 1 to 15% of the total length of the diaper 1 in the longitudinal direction X of the main body.
 また、腹側部A(腹側シート部材31)及び背側部B(背側シート部材32)それぞれにおける胴回り部Eには、外層シート材35と内層シート材36との間に弾性部材34が伸長状態で固定されていることによって、胴回りギャザーが形成されている。腹側部Aの胴回り部Eは、図2に示すようにおむつ1を、その各部の弾性部材を伸長させて平面状に拡げた展開状態とし、腹側部Aを上側、背側部Bを下側と考えた場合に、ウエスト部Dよりも下方に位置しかつ股下部Cよりも上方に位置する領域である。背側部Bの胴回り部Eは、おむつ1を図2に示すものとは上下逆にした場合に、ウエスト部Dよりも下方に位置しかつ背側延出域32Eよりも上方に位置する領域である。更に、股下部Cに位置する部材である後身頃延出域32Eにおいては、外層シート材35と内層シート材36との間に延出域弾性部材37が伸長状態で固定されていることによって、延出部ギャザーが形成されている。 In addition, an elastic member 34 is provided between the outer layer sheet material 35 and the inner layer sheet material 36 at the waist portion E in each of the ventral side portion A (belt side seat member 31) and the back side portion B (back side seat member 32). By being fixed in the extended state, a waistline gather is formed. As shown in FIG. 2, the waistline E of the abdominal side A has the diaper 1 in an expanded state in which the elastic members of the respective parts are extended to expand in a plane, the abdominal side A is the upper side, and the back side B is When considered as the lower side, it is an area located below the waist part D and above the crotch part C. The waistline portion E of the back side portion B is a region located below the waist portion D and above the back side extension region 32E when the diaper 1 is turned upside down from that shown in FIG. It is. Further, in the rear body extension region 32E that is a member located in the crotch part C, the extension region elastic member 37 is fixed in an extended state between the outer layer sheet material 35 and the inner layer sheet material 36. An extension part gather is formed.
 腹側部A(腹側シート部材31)及び背側部B(背側シート部材32)並びに後身頃延出域32Eにおいては、胴回り部Eの弾性部材34及び延出域弾性部材37が、図3に示すように、吸収性本体2(吸収性コア5)と重なる部分に配されていない。したがって、腹側部A及び背側部Bの胴回り部E並びに後身頃延出域32Eにおいては、吸収性本体2の配置領域を除く、本体長手方向Xに沿う左右両側部に、一対の胴回りギャザー及び延出域ギャザーが形成されている。このような弾性部材34,37の配置形態に代えて、弾性部材34,37が吸収性本体2に重なるように、腹側部A及び背側部Bの本体幅方向Yの全域にわたって該弾性部材34,37を配置するとともに、該弾性部材34,37が吸収性本体2と重なる部位において、該弾性部材34,37の伸縮性を抑制する処理を施してもよい。そのような処理としては、例えば弾性部材34,37を腹側シート部材31及び背側シート部材32並びに後身頃延出域32Eに配置した後に、細かく切断する方法が挙げられる。あるいは、接着剤等を用いた接合によって弾性部材34,37が伸縮しないように規制する方法が挙げられる。これらの処理によって、弾性部材34,37が吸収性本体2と重なる部位においては、該弾性部材34,37は伸縮しないが、該部位以外の他の部分(吸収性本体2の本体幅方向Yの外方に位置する部分)は伸縮が維持される。 In the ventral side A (belt side sheet member 31), the back side B (back side sheet member 32), and the back body extension area 32E, the elastic member 34 and the extension area elastic member 37 of the waistline E are illustrated. As shown in FIG. 3, it is not arranged in the part which overlaps with the absorptive main body 2 (absorbent core 5). Therefore, in the waist part E and the back body extension area 32E of the abdominal part A and the back part B, a pair of waist gathers is provided on the left and right side parts along the longitudinal direction X of the main body excluding the region where the absorbent main body 2 is disposed. And the extension area gathers are formed. Instead of such an arrangement form of the elastic members 34 and 37, the elastic members 34 and 37 extend over the entire region in the body width direction Y of the abdominal side A and the back side B so that the elastic members 34 and 37 overlap the absorbent main body 2. 34 and 37 may be disposed, and a process for suppressing the stretchability of the elastic members 34 and 37 may be performed at a portion where the elastic members 34 and 37 overlap the absorbent main body 2. As such a process, for example, a method of finely cutting the elastic members 34 and 37 after the elastic members 34 and 37 are arranged in the abdominal sheet member 31, the back sheet member 32, and the rear body extension region 32E can be cited. Or the method of restrict | limiting so that the elastic members 34 and 37 may not expand-contract by joining using an adhesive agent etc. is mentioned. By these processes, the elastic members 34 and 37 do not expand and contract at the portion where the elastic members 34 and 37 overlap the absorbent main body 2, but other portions (in the main body width direction Y of the absorbent main body 2) other than the portion. Expansion and contraction is maintained in the portion located outside.
 このように、胴回り部E及び後身頃延出域32Eに配された弾性部材34,37が、吸収性本体2(吸収性コア5)と重なる部分で伸縮性が抑制されていることによって、吸収性本体2に縦皺を生じさせることなく吸収性本体2の本体長手方向Xの端部を着用者の身体に沿わせることが可能となり、それによって、液漏れが効果的に防止される。これとともに、吸収性本体2に生じた皺の頂部が肌に当たることに起因する跡付き等の不都合が効果的に防止される。 As described above, the elastic members 34 and 37 arranged in the waistline portion E and the back body extension region 32E are suppressed by the stretchability at the portion overlapping the absorbent main body 2 (absorbent core 5). The end of the absorbent main body 2 in the main body longitudinal direction X can be made to follow the wearer's body without causing vertical wrinkles in the sex main body 2, thereby effectively preventing liquid leakage. At the same time, inconveniences such as a mark due to the top of the wrinkles generated in the absorbent main body 2 hitting the skin are effectively prevented.
 図5には、本実施形態のパンツ型使い捨ておむつ1に備えられた吸収性コア5が示されている。吸収性コア5は、おむつ1に対応して腹側部A、背側部B及び股下部Cを有している。腹側部Aは、吸収性コア5が腹側シート部材31と重なっている領域である。背側部Bは、後身頃部材32Fのうち、背側シート部材32と吸収性コア5とが重なっている領域である。股下部Cは、腹側シート部材31の下端部31Aと、背側シート部材32の下端部32Aとの間の領域である。股下部Cは、後身頃部材32Fのうち、後身頃延出域32Eを含んでいる。 FIG. 5 shows the absorbent core 5 provided in the pants-type disposable diaper 1 of the present embodiment. The absorbent core 5 has an abdominal side A, a back side B, and a crotch C corresponding to the diaper 1. The ventral portion A is a region where the absorbent core 5 overlaps the ventral sheet member 31. The back part B is an area where the back sheet member 32 and the absorbent core 5 overlap in the back body member 32F. The crotch portion C is a region between the lower end portion 31 </ b> A of the ventral side sheet member 31 and the lower end portion 32 </ b> A of the back side seat member 32. The crotch part C includes a back body extension region 32E of the back body member 32F.
 吸収性コア5は、坪量の異なる第1領域41及び第2領域42の2つの領域を有している。第1領域41は少なくとも股下部Cを含み、更に少なくとも腹側部Aも含んでいる。一方、第2領域42は少なくとも背側部Bを含んでいる。「第1領域41は少なくとも股下部Cを含み」とは、第1領域41が股下部Cを含み、更にそれ以外の領域、例えば背側部Bを含んでいてもよいことを意味する。また、「第2領域42は少なくとも背側部Bを含み」とは、第2領域42が背側部Bを含み、更にそれ以外の領域、例えば股下部Cを含んでいてもよいことを意味する。 The absorbent core 5 has two regions, a first region 41 and a second region 42 having different basis weights. The first region 41 includes at least the crotch part C, and further includes at least the ventral part A. On the other hand, the second region 42 includes at least the back side portion B. “The first region 41 includes at least the crotch portion C” means that the first region 41 includes the crotch portion C and may further include another region, for example, the back side portion B. Further, “the second region 42 includes at least the back side portion B” means that the second region 42 includes the back side portion B and may further include other regions such as the crotch portion C. To do.
 吸収性コア5は平面視して縦長の略矩形の形状をしている。吸収性コア5の長手方向は、本体長手方向Xと一致している。吸収性コア5をその本体長手方向Xに沿って見たとき、第1領域41は第2領域42よりも坪量が高くなっている。本体幅方向Yに沿って見たとき、第1領域41の坪量はいずれの部位でも同じになっている(ただし、後述する折曲誘導群を除く。)。同様に、本体幅方向Yに沿って見たとき、第2領域42の坪量はいずれの部位でも同じになっている。 The absorbent core 5 has a vertically long and substantially rectangular shape in plan view. The longitudinal direction of the absorbent core 5 coincides with the body longitudinal direction X. When the absorbent core 5 is viewed along the main body longitudinal direction X, the first region 41 has a higher basis weight than the second region 42. When viewed along the main body width direction Y, the basis weight of the first region 41 is the same in any part (except for the bending guidance group described later). Similarly, when viewed along the body width direction Y, the basis weight of the second region 42 is the same in any part.
 高坪量の第1領域41を股下部C及び腹側部Aを含むように形成し、かつ低坪量の第2領域42を、背側部Bを含むように形成することで、排泄された液を吸収性コア5が吸収して膨潤したときに、低坪量の第2領域42の膨潤の程度を抑制することができる。その結果、吸収性コア5が膨潤に起因する着用者の腰部への圧迫を抑制することができる。このことは、着用者が仰向けで寝ている場合に特に有利となる。特に、先に述べた背側シート部材32を構成する外層シート材35における延出部35E(図2及び図3参照)が本体長手方向Xに沿う長さをLとし、また、延出部35Eのうち第2領域42と重なる領域の本体長手方向Xに沿う長さをLとしたとき、Lに対するLの割合である[L/L]×100の値が50%以上100%以下、とりわけ60%以上100%以下であると、第2領域42が一層膨潤しにくくなり、おむつ1の装着状態において違和感が一層発生しづらくなるので好ましい。 It is excreted by forming the first area 41 of high basis weight so as to include the crotch C and the abdominal side part A, and forming the second area 42 of low basis weight so as to include the back side part B. When the absorbent core 5 absorbs the liquid and swells, the degree of swelling of the second area 42 having a low basis weight can be suppressed. As a result, the absorbent core 5 can suppress pressure on the waist of the wearer due to swelling. This is particularly advantageous when the wearer is sleeping on his back. In particular, the outer layer extending portion 35E in the sheet material 35 (see FIGS. 2 and 3) is the length along the body longitudinal direction X which constitutes the dorsal sheet member 32 as described above and L 1, also extending portion when the length along the body longitudinal direction X in the region which overlaps with the second region 42 of the 35E was L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of × 100 is 50% or more When it is 100% or less, particularly 60% or more and 100% or less, the second region 42 is more difficult to swell, and it is less likely to cause discomfort when the diaper 1 is worn.
 以上の有利な効果を一層顕著なものとする観点から、第1領域41の坪量は、第2領域42の坪量に対して120%以上であることが好ましく、140%以上であることが更に好ましい。また250%以下であることが好ましく、230%以下であることが更に好ましい。例えば第1領域41の坪量は、第2領域42の坪量に対して120%以上250%以下であることが好ましく、140%以上230%以下であることが更に好ましい。 From the viewpoint of making the above advantageous effects more prominent, the basis weight of the first region 41 is preferably 120% or more with respect to the basis weight of the second region 42, and preferably 140% or more. Further preferred. Moreover, it is preferable that it is 250% or less, and it is still more preferable that it is 230% or less. For example, the basis weight of the first region 41 is preferably 120% or more and 250% or less, and more preferably 140% or more and 230% or less with respect to the basis weight of the second region 42.
 同様に、以上の有利な効果を一層顕著なものとする観点から、第1領域41の長さは、吸収性コア5の全長の50%以上であることが好ましく、60%以上であることが更に好ましく、70%以上であることが一層好ましい。また90%以下であることが好ましく、85%以下であることが更に好ましく、80%以下であることが一層好ましい。例えば第1領域41の長さは、吸収性コア5の全長の50%以上90%以下であることが好ましく、60%以上85%以下であることが更に好ましく、70%以上80%以下であることが一層好ましい。一方、第2領域42の長さは、吸収性コア5の全長の10%以上50%以下であることが好ましく、15%以上40%以下であることが更に好ましく、20%以上30%以下であることが一層好ましい。 Similarly, from the viewpoint of making the above advantageous effects more prominent, the length of the first region 41 is preferably 50% or more of the entire length of the absorbent core 5, and preferably 60% or more. More preferably, it is more preferably 70% or more. Further, it is preferably 90% or less, more preferably 85% or less, and further preferably 80% or less. For example, the length of the first region 41 is preferably 50% or more and 90% or less of the total length of the absorbent core 5, more preferably 60% or more and 85% or less, and 70% or more and 80% or less. More preferably. On the other hand, the length of the second region 42 is preferably 10% to 50% of the entire length of the absorbent core 5, more preferably 15% to 40%, and more preferably 20% to 30%. More preferably it is.
 第1領域41の坪量と第2領域42の坪量との比率は上述のとおりであるところ、低坪量領域である第2領域42の坪量そのものの値は100g/m以上であることが好ましく、150g/m以上であることが更に好ましく、200g/m以上であることが一層好ましい。また600g/m以下であることが好ましく、550g/m以下であることが更に好ましく、500g/m以下であることが一層好ましい。例えば第2領域42の坪量は、100g/m以上600g/m以下であることが好ましく、150g/m以上550g/m以下であることが更に好ましく、200g/m以上500g/m以下であることが一層好ましい。一方、第1領域41の坪量は、第1領域41の坪量と第2領域42の坪量との比率が上述の範囲内であることを条件として、150g/m以上900g/m以下であることが好ましく、200g/m以上850g/m以下であることが更に好ましく、250g/m以上800g/m以下であることが一層好ましい。 The ratio of the basis weight of the first region 41 and the basis weight of the second region 42 is as described above, and the value of the basis weight itself of the second region 42 that is the low basis weight region is 100 g / m 2 or more. It is preferably 150 g / m 2 or more, and more preferably 200 g / m 2 or more. Also it is preferably 600 g / m 2 or less, further preferably 550 g / m 2 or less, and still more preferably 500 g / m 2 or less. For example, the basis weight of the second region 42 is preferably 100 g / m 2 or more and 600 g / m 2 or less, more preferably 150 g / m 2 or more and 550 g / m 2 or less, and 200 g / m 2 or more and 500 g / m 2 or less. More preferably, it is m 2 or less. On the other hand, the basis weight of the first region 41, on condition that the ratio of the basis weight and the basis weight of the second region 42 of the first region 41 is within the above range, 150 g / m 2 or more 900 g / m 2 Is preferably 200 g / m 2 or more and 850 g / m 2 or less, and more preferably 250 g / m 2 or more and 800 g / m 2 or less.
 上述した第1領域41と第2領域42との坪量の大小関係は、吸収性コア5の全体について測定された坪量を比較したものであるところ、吸収性コア5を構成するパルプ繊維等の親水性繊維の坪量及び吸水性ポリマーの坪量に関しても、第1領域41は第2領域42よりも高いことが好ましい。つまり第1領域41を構成する親水性繊維の坪量は、第2領域42を構成する親水性繊維の坪量よりも高いことが好ましい。また、第1領域41を構成する吸水性ポリマーの坪量は、第2領域42を構成する吸水性ポリマーの坪量よりも高いことが好ましい。このような坪量関係にすることで、排尿点付近の吸収容量を向上でき、液漏れ防止に効果があるだけでなく、ゲルブロッキングを抑制できるので好ましい。 The magnitude relation of the basic weight of the 1st field 41 mentioned above and the 2nd field 42 is a place where the basic weight measured about the whole absorptive core 5 is compared, pulp fiber etc. which constitute absorptive core 5 The first region 41 is preferably higher than the second region 42 with respect to the basis weight of the hydrophilic fiber and the basis weight of the water-absorbing polymer. That is, it is preferable that the basis weight of the hydrophilic fiber constituting the first region 41 is higher than the basis weight of the hydrophilic fiber constituting the second region 42. Further, the basis weight of the water-absorbing polymer constituting the first region 41 is preferably higher than the basis weight of the water-absorbing polymer constituting the second region 42. Such a basis weight relationship is preferable because it can improve the absorption capacity near the urination point and is effective not only in preventing liquid leakage but also in suppressing gel blocking.
 第1領域41と第2領域42とでは、坪量の差に起因する厚みの差が生じていてもよく、あるいは生じていなくてもよい。坪量の差に起因する厚みの差、つまり段差が両領域41,42の間で生じているか否かは本発明の有利な効果を奏する上で臨界的ではない。両領域41,42の間で段差が生じているか否かを問わず、吸収性コア5は単一構造体から構成されていることが好ましい。「単一構造体」とは、吸収性コア5を構成するパルプ繊維等の親水性繊維及び吸水性ポリマーの粒子を含む積繊体が単層構造からなることを言う。2種以上の積繊体を積層した複数層の構造体は、本発明に言う単一構造体に含まれない。坪量の異なる第1領域41及び第2領域42を有する吸収性コア5を単一構造体から構成することで、該吸収性コア5には層間の界面が非存在となるので、厚み方向に沿った液の拡散が円滑に行われるという利点が生じる。これに対して、複数層の構造体から吸収性コア5を構成すると、層間の界面が、厚み方向に沿った液の拡散を阻害しやすい傾向にある。尤も、本発明において吸収性コア5が複数層の構造体から構成されていることは妨げられない。 In the first region 41 and the second region 42, a difference in thickness due to a difference in basis weight may or may not occur. A difference in thickness due to a difference in basis weight, that is, whether or not a step is generated between the two regions 41 and 42 is not critical for achieving the advantageous effects of the present invention. It is preferable that the absorptive core 5 is composed of a single structure regardless of whether or not there is a step between the regions 41 and 42. The “single structure” means that the stacked fiber body including hydrophilic fibers such as pulp fibers and water-absorbing polymer particles constituting the absorbent core 5 has a single layer structure. A multi-layer structure in which two or more kinds of laminated fibers are laminated is not included in the single structure according to the present invention. By constituting the absorbent core 5 having the first region 41 and the second region 42 having different basis weights from a single structure, there is no interface between the layers in the absorbent core 5, so in the thickness direction The advantage is that the diffusion of the liquid along the line is performed smoothly. On the other hand, when the absorbent core 5 is composed of a multi-layer structure, the interface between the layers tends to easily inhibit the diffusion of the liquid along the thickness direction. However, in the present invention, it is not hindered that the absorbent core 5 is composed of a multi-layer structure.
 吸収性コア5に含まれるパルプ繊維等の親水性繊維と吸水性ポリマーとの比率は、親水性繊維:吸水性ポリマーの質量比で表して、1:0.5以上であることが好ましく、1:0.8以上であることが更に好ましい。また1:2.5以下であることが好ましく、1:2以下であることが更に好ましい。例えば親水性繊維:吸水性ポリマーの質量比は1:0.5以上1:2.5以下であることが好ましく、1:0.8以上1:2以下であることが更に好ましい。第1領域41と第2領域42とで、親水性繊維と吸水性ポリマーとの比率は同じでもよく、あるいは異なっていてもよい。後述する実施例のように、両領域41,42におけるこの比率が異なっていると、排尿点付近に充分な吸収性ポリマーを分散できるので、液漏れ防止に有用となり好ましい。両領域41,42におけるこの比率を異ならせるためには、例えば公知の積繊機を用いて吸収性コア5を製造するときの吸引条件を適切に設定すればよい。 The ratio of hydrophilic fibers such as pulp fibers contained in the absorbent core 5 and the water-absorbing polymer is preferably 1: 0.5 or more, expressed as a mass ratio of hydrophilic fiber: water-absorbing polymer. : More preferably 0.8 or more. Moreover, it is preferable that it is 1: 2.5 or less, and it is still more preferable that it is 1: 2 or less. For example, the mass ratio of hydrophilic fiber: water-absorbing polymer is preferably 1: 0.5 or more and 1: 2.5 or less, and more preferably 1: 0.8 or more and 1: 2 or less. In the first region 41 and the second region 42, the ratio between the hydrophilic fiber and the water-absorbing polymer may be the same or different. As in the examples described later, it is preferable that the ratios in both the regions 41 and 42 are different because it is possible to disperse sufficient absorbent polymer in the vicinity of the urination point, which is useful for preventing liquid leakage. In order to make this ratio in both the regions 41 and 42 different, for example, a suction condition when manufacturing the absorbent core 5 using a known fiber stacker may be set appropriately.
 図5に示すとおり、第1領域41は、本体長手方向Xに延びる複数条の折曲誘導部51,52a,52bからなる折曲誘導部群50を有している。折曲誘導部群50は、本体幅方向Yの中央域に位置する中央折曲誘導部51と、中央折曲誘導部51の両側部に位置する一対の側部折曲誘導部52a,52bとからなる。中央折曲誘導部51は、吸収性コア5の本体幅方向Yの中央域に位置しているとともに、おむつ1の本体幅方向Yの中央域に位置している。各側部折曲誘導部52a,52bは、中央折曲誘導部51と平行に延びている。また各側部折曲誘導部52a,52bと中央折曲誘導部51との距離は同じになっている。したがって、各側部折曲誘導部52a,52bは、おむつ1の本体長手方向Xに延びる縦中心線(図示せず)に対して対称の位置に形成されている。 As shown in FIG. 5, the first region 41 has a bending guide section group 50 including a plurality of bending guide sections 51, 52 a, 52 b extending in the main body longitudinal direction X. The bending guide portion group 50 includes a central bending guide portion 51 located in the central region in the body width direction Y, and a pair of side bending guide portions 52a and 52b located on both sides of the central bending guide portion 51. Consists of. The central bending guiding portion 51 is located in the central area of the absorbent core 5 in the main body width direction Y and is located in the central area of the diaper 1 in the main body width direction Y. Each of the side bending guide portions 52 a and 52 b extends in parallel with the central bending guide portion 51. Further, the distances between the side bending guide portions 52a and 52b and the central bending guide portion 51 are the same. Therefore, each side part bending | flexion induction | guidance | derivation part 52a, 52b is formed in the symmetrical position with respect to the vertical centerline (not shown) extended in the main body longitudinal direction X of the diaper 1. As shown in FIG.
 本実施形態においては、図5に示すとおり三条の折曲誘導部51,52a,52bからなる折曲誘導部群50を採用している。しかし折曲誘導部の本数はこれに限られない。例えば一条の中央折曲誘導部51に対して、該中央折曲誘導部51の両側部の位置に、対称に二条以上の側部折曲誘導部を形成することができる。尤も、本発明の効果が確実に奏されるようにするためには、本実施形態のように三条の折曲誘導部を形成することが好ましい。 In the present embodiment, as shown in FIG. 5, a bending guide section group 50 including three strip guide sections 51, 52a and 52b is employed. However, the number of bending guides is not limited to this. For example, two or more side bending guide portions can be formed symmetrically at the positions of both sides of the central bending guide portion 51 with respect to the single center bending guide portion 51. However, in order to ensure the effects of the present invention, it is preferable to form the three-fold bending guide portions as in this embodiment.
 各折曲誘導部51,52a,52bは、おむつ1を装着した状態において、該おむつ1に外力が加わったときに、吸収性コア5の変形の起点ないし可撓軸として作用する部位である。この目的のために、各折曲誘導部51,52a,52bは、例えば本体長手方向Xに延びるスリット、溝又は非積繊部からなる。スリットとは、吸収性コア5の厚み方向に向けて切り込みを入れた部位のことであり、幅を有していない。溝とは、底部を有する所定幅の細長い凹部のことである。非積繊部とは、溝から底部を除去したものであり、吸収性コア5を構成するパルプ繊維等の積繊体が存在していない部位のことである。吸収性コア5の変形を首尾よく行う観点からは、中央折曲誘導部51をスリット、溝又は非積繊部から構成するとともに、側部折曲誘導部52a,52bを溝又は非積繊部から構成することが好ましい。図5(b)に示すとおり、本実施形態では各折曲誘導部51,52a,52bは吸収性コア5の厚み方向全域を貫通する非積繊部から構成されている。各折曲誘導部51,52a,52bがいずれの形態であっても、それらの幅、すなわち本体幅方向Yに沿った長さは、本体長手方向Xのいずれの位置においても同じであることが好ましい。 Each bending guide part 51, 52a, 52b is a part that acts as a starting point of deformation or a flexible shaft of the absorbent core 5 when an external force is applied to the diaper 1 in a state where the diaper 1 is mounted. For this purpose, each bending guide part 51, 52a, 52b is composed of, for example, a slit, a groove or a non-stacking part extending in the main body longitudinal direction X. A slit is a part which cut | incised toward the thickness direction of the absorptive core 5, and does not have a width | variety. A groove | channel is an elongate recessed part of the predetermined width | variety which has a bottom part. The non-filament portion is a portion where the bottom portion is removed from the groove, and is a portion where no pile fiber such as pulp fibers constituting the absorbent core 5 is present. From the viewpoint of successfully deforming the absorbent core 5, the central bending guide part 51 is constituted by a slit, a groove, or a non-stacking part, and the side bending guide parts 52 a, 52 b are formed by a groove or a non-stacking part. It is preferable to comprise from. As shown in FIG. 5 (b), in this embodiment, each of the bending guide portions 51, 52 a, 52 b is composed of a non-stacked fiber portion that penetrates the entire thickness direction of the absorbent core 5. Regardless of the form of each of the bending guide portions 51, 52a, 52b, the width thereof, that is, the length along the main body width direction Y may be the same at any position in the main body longitudinal direction X. preferable.
 折曲誘導部群50を構成する折曲誘導部51,52a,52bは、それらの幅が同じでもよく、あるいは異なっていてもよい。特に各折曲誘導部51,52a,52bの幅が同じであると、排泄された液が吸収コア5内で均一に、かつ素早く拡散しやすくなり、吸収性コア5の全領域を液吸収のために有効活用できるので好ましい。この利点を一層顕著にする観点から、各折曲誘導部51,52a,52bの幅は、1mm以上であることが好ましく、3mm以上であることが更に好ましい。また、20mm以下であることが好ましく、15mm以下であることが更に好ましい。例えば各折曲誘導部51,52a,52bの幅は、1mm以上20mm以下であることが好ましく、3mm以上15mm以下であることが更に好ましい。 The bending guide portions 51, 52a, and 52b constituting the bending guide portion group 50 may have the same width or different widths. In particular, if the bending guide portions 51, 52a and 52b have the same width, the excreted liquid is easily and uniformly diffused in the absorbent core 5, and the entire area of the absorbent core 5 is absorbed by the liquid. Therefore, it is preferable because it can be used effectively. From the viewpoint of making this advantage even more conspicuous, the width of each bending guide 51, 52a, 52b is preferably 1 mm or more, and more preferably 3 mm or more. Moreover, it is preferable that it is 20 mm or less, and it is still more preferable that it is 15 mm or less. For example, the width of each bending guide 51, 52a, 52b is preferably 1 mm or more and 20 mm or less, and more preferably 3 mm or more and 15 mm or less.
 折曲誘導部群50を構成する折曲誘導部51,52a,52bは、本体幅方向Yに沿った長さが同じでもよく、あるいは異なっていてもよい。特に各折曲誘導部51,52a,52bの長さが同じであると、排泄された液が吸収コア5内で均一に、かつ素早く拡散しやすくなり、吸収性コア5の全領域を液吸収のために有効活用できるので好ましい。この利点を一層顕著にする観点から、各折曲誘導部51,52a,52bの長さは、50mm以上であることが好ましく、100mm以上であることが更に好ましい。また、350mm以下であることが好ましく、300mm以下であることが更に好ましい。例えば各折曲誘導部51,52a,52bの長さは、50mm以上350mm以下であることが好ましく、100mm以上300mm以下であることが更に好ましい。 The bending guide portions 51, 52a and 52b constituting the bending guide portion group 50 may have the same or different lengths along the main body width direction Y. In particular, if the lengths of the bending guide portions 51, 52a, and 52b are the same, the excreted liquid is easily and evenly diffused in the absorbent core 5, and the entire area of the absorbent core 5 is absorbed by the liquid. Therefore, it is preferable because it can be effectively utilized. From the viewpoint of making this advantage even more conspicuous, the length of each bending guide 51, 52a, 52b is preferably 50 mm or more, and more preferably 100 mm or more. Moreover, it is preferable that it is 350 mm or less, and it is still more preferable that it is 300 mm or less. For example, the length of each bending guide 51, 52a, 52b is preferably from 50 mm to 350 mm, and more preferably from 100 mm to 300 mm.
 各折曲誘導部51,52a,52bの長さが同じである場合、それらの腹側部A側の端部の位置は同じでもよく、あるいは異なっていてもよい。同様に、背側部B側の端部の位置は同じでもよく、あるいは異なっていてもよい。図5に示す実施形態においては、各折曲誘導部51,52a,52bの腹側部A側の端部の位置は同じであり、したがって背側部B側の端部の位置も同じになっている。 When the lengths of the bending guide portions 51, 52a, and 52b are the same, the positions of the end portions on the ventral side A side may be the same or different. Similarly, the position of the end portion on the back side B side may be the same or different. In the embodiment shown in FIG. 5, the positions of the end portions on the ventral side A side of the bending guide portions 51, 52 a, 52 b are the same, and therefore the positions of the end portions on the back side B side are also the same. ing.
 折曲誘導部群50は、腹側部Aに位置する外装体である腹側シート部材31における下端部31Aよりも股下部C寄りに位置している。更に折曲誘導部群50は、背側部において非存在となっている。つまり折曲誘導部群50は、腹側シート部材31の下端部31Aと、背側シート部材32の下端部32Aとの間にのみ位置している。折曲誘導部群50をこのような位置に配置することによって、吸収性コア5による液の吸収力と、吸収性コア5における液の良好な拡散性と、おむつ1の良好な装着感とのバランスを図ることができる。特に、各折曲誘導部51,52a,52bの端部のうち、背側シート部材32側の端部T(図5参照)と、吸収性コア5における第2領域42と第1領域41との境界位置T(図5参照)との間の距離を、5mm以上50mm以下、特に10mm以上45mm以下に設定すると、高坪量領域である第1領域41のみでの液の拡散が起こりやすくなるので好ましい。その結果、吸収性コア5が屈曲変形しやすくなり、おむつ1の装着感が一層良好になる。 The bending guide part group 50 is located closer to the crotch part C than the lower end part 31A of the ventral sheet member 31 which is an exterior body located on the ventral part A. Further, the bending guide portion group 50 is not present on the back side portion. That is, the bending guide part group 50 is located only between the lower end part 31 </ b> A of the abdominal sheet member 31 and the lower end part 32 </ b> A of the back side sheet member 32. By arranging the bending guide portion group 50 at such a position, the absorption capacity of the liquid by the absorbent core 5, the good diffusibility of the liquid in the absorbent core 5, and the good wearing feeling of the diaper 1. Balance can be achieved. In particular, among the end portions of the bending guide portions 51, 52 a, 52 b, the end portion T 1 (see FIG. 5) on the back seat member 32 side, the second region 42 and the first region 41 in the absorbent core 5. When the distance to the boundary position T 2 (see FIG. 5) is set to 5 mm or more and 50 mm or less, particularly 10 mm or more and 45 mm or less, liquid diffusion occurs only in the first area 41 which is a high basis weight area. Since it becomes easy, it is preferable. As a result, the absorbent core 5 is easily bent and deformed, and the feeling of wearing the diaper 1 is further improved.
 特に、折曲誘導部群50が、着用者の大便排泄部の位置よりも背側部B側において非存在となっていると、排泄された便が着用者の肌に付着しづらくなるので好ましい。「背側部B側において非存在」とは、折曲誘導部群50を構成するすべての折曲誘導部における背側部B側の端部の位置が、着用者の大便排泄部の位置よりも腹側部A側に偏倚していることを言う。 In particular, it is preferable that the bending guidance part group 50 is absent on the back side B side from the position of the stool excretion part of the wearer because the excreted stool is difficult to adhere to the wearer's skin. . “Non-existing on the dorsal side B side” means that the positions of the end portions on the dorsal side B side of all the bending guiding parts constituting the bending guiding part group 50 are from the position of the stool excretion part of the wearer. Is also biased to the ventral side A side.
 先に述べたとおり、吸収性コア5は、その表面の全域がコアラップシートなどの液透過性シートによって被覆されている。その結果、吸収性コアの肌対向面側及び非肌対向面側に、液透過性シートが対向配置された状態になっている。そして、対向配置された液透過性シートと、該液透過性シートの間に位置する、吸収性コア5の構成材料が非存在となっている空間とで、中央折曲誘導部51及び側部折曲誘導部52a,52bが画成されている。換言すれば、中央折曲誘導部51及び側部折曲誘導部52a,52bは閉じた空間になっている。このような構成を採用することで、排泄された液を吸収性コア5が吸収して、吸水性ポリマーが膨潤したとしても、膨潤による体積の増加分が該空間によって吸収されるので、吸水性ポリマーの膨潤阻害が起こりにくくなるという有利な効果が奏される。しかも該空間は閉じた空間なので、膨潤した吸水性ポリマーがおむつ1の外に脱落するおそれもない。 As described above, the entire surface of the absorbent core 5 is covered with a liquid permeable sheet such as a core wrap sheet. As a result, the liquid-permeable sheet is disposed opposite to the skin facing surface side and the non-skin facing surface side of the absorbent core. Then, the central bending guide part 51 and the side part are arranged between the liquid permeable sheet disposed opposite to the space and the space between the liquid permeable sheets where the constituent material of the absorbent core 5 is absent. Bending guide portions 52a and 52b are defined. In other words, the central bending guiding part 51 and the side bending guiding parts 52a and 52b are closed spaces. By adopting such a configuration, even if the absorbent core 5 absorbs the excreted liquid and the water-absorbing polymer swells, an increase in volume due to the swelling is absorbed by the space. There is an advantageous effect that inhibition of swelling of the polymer hardly occurs. Moreover, since the space is a closed space, the swollen water-absorbing polymer is not likely to fall out of the diaper 1.
 本実施形態のおむつ1に用いられる吸収性コア5は、例えば周面に凹部が形成された積繊ドラムを用い、該凹部内にパルプ繊維等の親水性繊維及び吸水性ポリマーの粒子を堆積させて積繊体を製造するときに、該凹部の底部を構成する通気性部材のうち、低坪量領域である第2領域42となるべき部位を低通気性とすることで製造できる。これによって、第1領域41及び第2領域42を首尾よく形成することができる。折曲誘導部群50は、前記の通気性部材のうち、折曲誘導部群50を構成する各折曲誘導部51,52a,52bの形成予定部の位置を非通気の非積繊部位とすればよい。 The absorbent core 5 used in the diaper 1 of the present embodiment uses, for example, a stacking drum having recesses formed on the peripheral surface, and deposits hydrophilic fibers such as pulp fibers and water-absorbing polymer particles in the recesses. Thus, when the fiber stack is manufactured, it can be manufactured by making the portion to be the second region 42 which is the low basis weight region out of the air permeable member constituting the bottom of the concave portion low air permeable. Thereby, the 1st field 41 and the 2nd field 42 can be formed successfully. The bending guide part group 50 is a non-ventilated non-stacked fiber part in which the positions of the bending guide parts 51, 52a, and 52b forming the bending guide part group 50 of the air-permeable members are not vented. do it.
 図6には、本発明の別の実施形態で用いられる吸収性コア5が示されている。なお、同図に関し特に説明しない点については、先に述べた図5に関して詳述した説明が適宜適用される。また、図6において図5と同じ部材には同じ符号を付してある。本実施形態の吸収性コア5も、おむつ1に対応して腹側部A、背側部B及び股下部Cを有している。図5に示す実施形態の吸収性コアが、坪量の異なる第1領域41及び第2領域42の2つの領域を有しているのに対して、図6に示す実施形態の吸収性コア5は、第1領域41及び第2領域42に加えて、第1領域41よりも坪量が低く、かつ第2領域42よりも坪量が高い第3領域43を更に有している。第1領域41は少なくとも股下部Cを含んでいる。第2領域42は少なくとも背側部Bを含んでいる。そして第3領域43は少なくとも腹側部Aを含んでいる。「第3領域43は少なくとも腹側部Aを含み」とは、第3領域43が腹側部Aを含み、更にそれ以外の領域、例えば股下部Cを含んでいてもよいことを意味する。 FIG. 6 shows an absorbent core 5 used in another embodiment of the present invention. Note that the description in detail with respect to FIG. 5 described above is appropriately applied to points that are not particularly described with reference to FIG. In FIG. 6, the same members as those in FIG. 5 are denoted by the same reference numerals. The absorbent core 5 of the present embodiment also has an abdominal side A, a back side B, and a crotch C corresponding to the diaper 1. While the absorbent core of the embodiment shown in FIG. 5 has two regions of the first region 41 and the second region 42 having different basis weights, the absorbent core 5 of the embodiment shown in FIG. In addition to the first area 41 and the second area 42, the apparatus further includes a third area 43 having a basis weight lower than that of the first area 41 and higher than that of the second area 42. The first region 41 includes at least the crotch part C. The second region 42 includes at least the back side portion B. The third region 43 includes at least the ventral portion A. “The third region 43 includes at least the ventral portion A” means that the third region 43 includes the ventral portion A and may include other regions, for example, the crotch portion C.
 吸収性コア5は、これを本体幅方向Yに沿って見たとき、第1領域41の坪量はいずれの部位でも同じになっている(ただし、折曲誘導群50を除く。)。同様に、本体幅方向Yに沿って見たとき、第2領域42及び第3領域43の坪量はいずれの部位でも同じになっている。 When the absorbent core 5 is viewed along the main body width direction Y, the basis weight of the first region 41 is the same in any part (except for the bending guide group 50). Similarly, when viewed along the main body width direction Y, the basis weights of the second region 42 and the third region 43 are the same in any part.
 高坪量の第1領域41を、股下部Cを含むように形成し、低坪量の第2領域42を、背側部Bを含むように形成し、かつ中坪量の第3領域43を、腹側部Aを含むように形成することで、排泄された液を吸収性コア5が吸収して膨潤したときに、低坪量の第2領域42の膨潤の程度、及び中坪量の第3領域43の膨潤の程度を抑制することができる。その結果、吸収性コア5が膨潤に起因する着用者の腰部及び腹部への圧迫を抑制することができる。このことは、着用者がうつ伏せで寝ている場合に特に有利となる。 The high basis weight first region 41 is formed so as to include the crotch portion C, the low basis weight second region 42 is formed so as to include the back side portion B, and the medium basis weight third region 43 is included. Is formed so as to include the ventral portion A, when the absorbent core 5 absorbs and swells the excreted liquid, the degree of swelling of the second basis area 42 of low basis weight, and the medium basis weight The degree of swelling of the third region 43 can be suppressed. As a result, the absorbent core 5 can suppress pressure on the waist and abdomen of the wearer due to swelling. This is particularly advantageous when the wearer is lying on his / her face down.
 以上の有利な効果を一層顕著なものとする観点から、第3領域43の坪量は、第2領域42の坪量に対して105%以上であることが好ましく、110%以上であることが更に好ましい。また200%以下であることが好ましく、180%以下であることが更に好ましい。例えば第3領域43の坪量は、第2領域42の坪量に対して105%以上200%以下であることが好ましく、110%以上180%以下であることが更に好ましい。更に、第3領域43の坪量は、第1領域41の坪量に対して50%以上であることが好ましく、60%以上であることが更に好ましい。また95%以下であることが好ましく、85%以下であることが更に好ましい。例えば第3領域43の坪量は、第1領域41の坪量に対して50%以上95%以下であることが好ましく、60%以上85%以下であることが更に好ましい。 From the viewpoint of making the above advantageous effects more prominent, the basis weight of the third region 43 is preferably 105% or more with respect to the basis weight of the second region 42, and preferably 110% or more. Further preferred. Moreover, it is preferable that it is 200% or less, and it is still more preferable that it is 180% or less. For example, the basis weight of the third region 43 is preferably 105% or more and 200% or less, and more preferably 110% or more and 180% or less with respect to the basis weight of the second region 42. Furthermore, the basis weight of the third region 43 is preferably 50% or more, and more preferably 60% or more with respect to the basis weight of the first region 41. Moreover, it is preferable that it is 95% or less, and it is still more preferable that it is 85% or less. For example, the basis weight of the third region 43 is preferably 50% or more and 95% or less, and more preferably 60% or more and 85% or less with respect to the basis weight of the first region 41.
 同様に、以上の有利な効果を一層顕著なものとする観点から、第1領域41の長さは、吸収性コア5の全長の40%以上であることが好ましく、45%以上であることが更に好ましく、50%以上であることが一層好ましい。また80%以下であることが好ましく、75%以下であることが更に好ましく、70%以下であることが一層好ましい。例えば第1領域41の長さは、吸収性コア5の全長の40%以上80%以下であることが好ましく、45%以上75%以下であることが更に好ましく、50%以上70%以下であることが一層好ましい。一方、第2領域42の長さは、吸収性コア5の全長の10%以上50%以下であることが好ましく、15%以上40%以下であることが更に好ましい。更に、第3領域43の長さは、吸収性コア5の全長の2.5%以上30%以下であることが好ましく、5%以上20%以下であることが更に好ましい。 Similarly, from the viewpoint of making the above advantageous effects more prominent, the length of the first region 41 is preferably 40% or more of the entire length of the absorbent core 5, and preferably 45% or more. More preferably, it is more preferably 50% or more. Further, it is preferably 80% or less, more preferably 75% or less, and further preferably 70% or less. For example, the length of the first region 41 is preferably 40% or more and 80% or less of the entire length of the absorbent core 5, more preferably 45% or more and 75% or less, and 50% or more and 70% or less. More preferably. On the other hand, the length of the second region 42 is preferably 10% or more and 50% or less, and more preferably 15% or more and 40% or less of the entire length of the absorbent core 5. Furthermore, the length of the third region 43 is preferably 2.5% or more and 30% or less, and more preferably 5% or more and 20% or less of the entire length of the absorbent core 5.
 第3領域43の坪量と、第1領域41の坪量及び第2領域42の坪量との比率は上述のとおりであるところ、中坪量領域である第3領域43の坪量そのものの値は125g/m以上であることが好ましく、200g/m以上であることが更に好ましい。また800g/m以下であることが好ましく、750g/m以下であることが更に好ましい。例えば第3領域43の坪量は、125g/m以上800g/m以下であることが好ましく、200g/m以上750g/m以下であることが更に好ましい。一方、第1領域41の坪量及び第2領域42の坪量は、図5に示す実施形態の場合と同様である。 The ratio of the basis weight of the third region 43 to the basis weight of the first region 41 and the basis weight of the second region 42 is as described above, and the basis weight of the third region 43 that is the middle basis weight region itself. The value is preferably 125 g / m 2 or more, and more preferably 200 g / m 2 or more. Moreover, it is preferable that it is 800 g / m < 2 > or less, and it is still more preferable that it is 750 g / m < 2 > or less. For example, the basis weight of the third region 43 is preferably 125 g / m 2 or more and 800 g / m 2 or less, and more preferably 200 g / m 2 or more and 750 g / m 2 or less. On the other hand, the basis weight of the first region 41 and the basis weight of the second region 42 are the same as in the embodiment shown in FIG.
 上述した第1領域41と第2領域42と第3領域43との坪量の大小関係は、吸収性コア5の全体について測定された坪量を比較したものであるところ、吸収性コア5を構成するパルプ繊維等の親水性繊維の坪量及び吸水性ポリマーの坪量に関しても、第2領域42、第3領域43、第1領域41の順で高くなっていることが好ましい。このような坪量関係にすることで、排尿点付近の吸収容量を向上でき、液漏れ防止に効果があるだけでなく、ゲルブロッキングを抑制できるので好ましい。 The magnitude relation of the basic weight of the 1st area | region 41 mentioned above, the 2nd area | region 42, and the 3rd area | region 43 is a place where the basic weight measured about the whole absorptive core 5 is compared. The basis weight of hydrophilic fibers such as pulp fibers and the basis weight of the water-absorbing polymer are preferably higher in the order of the second region 42, the third region 43, and the first region 41. Such a basis weight relationship is preferable because it can improve the absorption capacity near the urination point and is effective not only in preventing liquid leakage but also in suppressing gel blocking.
 第1領域41と第2領域42との間、及び第1領域41と第3領域43との間では、坪量の差に起因する厚みの差が生じていてもよく、あるいは生じていなくてもよい。坪量の差に起因する厚みの差、つまり段差が領域41,42の間及び領域41,43の間で生じているか否かは本発明の有利な効果を奏する上で臨界的ではない。このような段差が生じているか否かを問わず、本実施形態においても吸収性コア5は単一構造体から構成されていることが好ましい。吸収性コア5を単一構造体から構成することの利点は、図5に示す実施形態の場合と同様である。 Between the first region 41 and the second region 42 and between the first region 41 and the third region 43, a difference in thickness due to a difference in basis weight may or may not have occurred. Also good. The difference in thickness due to the difference in basis weight, that is, whether or not a step is generated between the regions 41 and 42 and between the regions 41 and 43 is not critical for achieving the advantageous effects of the present invention. Regardless of whether or not such a step is generated, it is preferable that the absorbent core 5 is formed of a single structure also in this embodiment. The advantage of constituting the absorbent core 5 from a single structure is the same as that of the embodiment shown in FIG.
 本実施形態においても、吸収性コア5は、その第1領域41に、本体長手方向Xに延びる複数条の折曲誘導部51,52a,52bからなる折曲誘導部群50を有している。折曲誘導部群50は、腹側部Aに位置する外装体である腹側シート部材31における下端部31Aよりも股下部C寄りに位置している。更に折曲誘導部群50は、背側部において非存在となっている。その結果、折曲誘導部群50は、腹側シート部材31の下端部31Aと、背側シート部材32の下端部32Aとの間にのみ位置している。このような構成の折曲誘導部群50を採用することで、図5に示す実施形態の場合と同様の有利な効果が奏される。 Also in this embodiment, the absorptive core 5 has the bending induction | guidance | derivation part group 50 which consists of the multiple bending | flexion induction | guidance | derivation part 51, 52a, 52b extended in the main body longitudinal direction X in the 1st area | region 41. FIG. . The bending guide part group 50 is located closer to the crotch part C than the lower end part 31A of the ventral sheet member 31 which is an exterior body located on the ventral part A. Further, the bending guide portion group 50 is not present on the back side portion. As a result, the bending guide part group 50 is located only between the lower end part 31 </ b> A of the abdominal sheet member 31 and the lower end part 32 </ b> A of the back side sheet member 32. By adopting the bending guide portion group 50 having such a configuration, the same advantageous effects as those of the embodiment shown in FIG. 5 can be obtained.
 図7には、本発明の更に別の実施形態が示されている。なお、同図に関し特に説明しない点については、先に述べた図5及び図6に関して詳述した説明が適宜適用される。また、図7において図5及び図6と同じ部材には同じ符号を付してある。図7に示す吸収性コア5は、坪量の異なる第1領域41及び第2領域42を有している。第1領域41は少なくとも股下部Cを含んでいる。一方、第2領域42は、少なくとも腹側部Aを含む腹側第2領域42Aと、少なくとも背側部Bを含む背側第2領域42Bとからなる。「第1領域41は少なくとも股下部Cを含み」とは、第1領域41が股下部Cを含み、更にそれ以外の領域、例えば腹側部Aの一部や背側部Bの一部を含んでいてもよいことを意味する。また、「腹側第2領域42Aは少なくとも腹側部Aを含み」とは、腹側第2領域42Aが腹側部Aを含み、更にそれ以外の領域、例えば股下部Cを含んでいてもよいことを意味する。同様に、「背側第2領域42Bは少なくとも背側部Bを含み」とは、背側第2領域42Bが背側部Bを含み、更にそれ以外の領域、例えば股下部Cを含んでいてもよいことを意味する。なお、以下の説明において、単に「第2領域42」というときには、腹側第2領域42A及び背側第2領域42Bの双方を指す。 FIG. 7 shows still another embodiment of the present invention. Note that the description in detail with respect to FIGS. 5 and 6 described above is appropriately applied to points that are not particularly described with reference to FIG. In FIG. 7, the same members as those in FIGS. 5 and 6 are denoted by the same reference numerals. The absorptive core 5 shown in FIG. 7 has the 1st area | region 41 and the 2nd area | region 42 from which basic weight differs. The first region 41 includes at least the crotch part C. On the other hand, the second region 42 includes a ventral second region 42A including at least the ventral portion A and a dorsal second region 42B including at least the dorsal portion B. “The first region 41 includes at least the crotch portion C” means that the first region 41 includes the crotch portion C, and other regions such as a part of the abdominal part A and a part of the dorsal part B. It means that it may contain. Further, “the ventral second region 42A includes at least the ventral portion A” means that the ventral second region 42A includes the ventral portion A and further includes other regions such as the crotch portion C. Means good. Similarly, “the dorsal second region 42B includes at least the dorsal portion B” means that the dorsal second region 42B includes the dorsal portion B and further includes other regions such as the crotch portion C. Means good. In the following description, the term “second region 42” refers to both the abdominal second region 42A and the dorsal second region 42B.
 吸収性コア5は平面視して縦長の略矩形の形状をしている。吸収性コア5の長手方向は、本体長手方向Xと一致している。吸収性コア5をその本体長手方向Xに沿って見たとき、第1領域41は第2領域42よりも坪量が高くなっている。本体幅方向Yに沿って見たとき、第1領域41の坪量はいずれの部位でも同じになっている(ただし、折曲誘導群を除く。)。同様に、本体幅方向Yに沿って見たとき、第2領域42の坪量はいずれの部位でも同じになっている。また、腹側第2領域42A及び背側第2領域42Bの坪量は実質的に同じになっている。実質的に同じとは、坪量の差が±10%未満であることを言う。 The absorbent core 5 has a vertically long and substantially rectangular shape in plan view. The longitudinal direction of the absorbent core 5 coincides with the body longitudinal direction X. When the absorbent core 5 is viewed along the main body longitudinal direction X, the first region 41 has a higher basis weight than the second region 42. When viewed along the body width direction Y, the basis weight of the first region 41 is the same in any part (however, the bending guide group is excluded). Similarly, when viewed along the body width direction Y, the basis weight of the second region 42 is the same in any part. Further, the basis weights of the ventral second region 42A and the dorsal second region 42B are substantially the same. “Substantially the same” means that the difference in basis weight is less than ± 10%.
 高坪量の第1領域41を、股下部Cを含むように形成し、かつ低坪量の第2領域42を腹側部A及び背側部Bを含むように形成することで、排泄された液を吸収性コア5が吸収して膨潤したときに、低坪量の第2領域42の膨潤の程度を抑制することができる。その結果、吸収性コア5が膨潤に起因する着用者の腹部及び腰部の双方への圧迫を抑制することができる。特に、先に述べた腹側シート部材31及び/又は背側シート部材32を構成する外層シート材35における延出部35E(図2及び図3参照)が本体長手方向Xに沿う長さをLとし、また、延出部35Eのうち腹側第2領域42A及び/又は背側第2領域42Bと重なる領域の本体長手方向Xに沿う長さをLとしたとき、Lに対するLの割合である[L/L]×100の値が50%以上100%以下、とりわけ60%以上100%以下であると、腹側第2領域42A及び/又は背側第2領域42Bが一層膨潤しにくくなり、おむつ1の装着状態において違和感が一層発生しづらくなるので好ましい。このことは、着用者がうつ伏せ又は仰向けで寝ている場合に特に有利となる。更に、股下部Cからの液漏れも効果的に防止できる。その上、腹側シート部材31及び背側シート部材32に取り付けられている外装体形成用弾性部材33の伸縮が阻害されにくくなる。したがって本実施形態のおむつ1は、はいはいができる前の低月齢の乳児用のおむつとして特に適したものとなる。ここで言う低月齢とは、生後12か月までの乳児、又は体重が8000gまでの乳児のことである。 It is excreted by forming the first area 41 having a high basis weight so as to include the crotch part C and forming the second area 42 having a low basis weight so as to include the ventral part A and the dorsal part B. When the absorbent core 5 absorbs the liquid and swells, the degree of swelling of the second area 42 having a low basis weight can be suppressed. As a result, it is possible to suppress pressure on the wearer's abdomen and waist due to swelling of the absorbent core 5. In particular, the extension portion 35E (see FIGS. 2 and 3) in the outer layer sheet material 35 constituting the ventral sheet member 31 and / or the dorsal sheet member 32 described above has a length L along the longitudinal direction X of the main body. 1, and also, when the length along the body longitudinal direction X of the region overlapping the ventral second regions 42A and / or the back-side second region 42B of the extending portion 35E was L 2, L 2 with respect to L 1 When the value of [L 2 / L 1 ] × 100, which is the ratio of the above, is 50% or more and 100% or less, particularly 60% or more and 100% or less, the ventral second region 42A and / or the dorsal second region 42B is This is preferable because it is less likely to swell and the discomfort is less likely to occur when the diaper 1 is worn. This is particularly advantageous when the wearer is lying prone or lying on his back. Furthermore, liquid leakage from the crotch part C can be effectively prevented. In addition, the expansion and contraction of the exterior body forming elastic member 33 attached to the abdominal sheet member 31 and the back sheet member 32 is less likely to be hindered. Therefore, the diaper 1 of the present embodiment is particularly suitable as a diaper for a low-age infant before being able to do yes. The term “old age” as used herein refers to an infant up to 12 months of age or an infant weighing up to 8000 g.
 以上の有利な効果を一層顕著なものとする観点から、第1領域41の坪量は、第2領域42の坪量に対して110%以上であることが好ましく、120%以上であることが更に好ましい。また400%以下であることが好ましく、300%以下であることが更に好ましい。例えば第1領域41の坪量は、第2領域42の坪量に対して110%以上400%以下であることが好ましく、120%以上300%以下であることが更に好ましい。 From the viewpoint of making the above advantageous effects more prominent, the basis weight of the first region 41 is preferably 110% or more with respect to the basis weight of the second region 42, and preferably 120% or more. Further preferred. Further, it is preferably 400% or less, and more preferably 300% or less. For example, the basis weight of the first region 41 is preferably 110% or more and 400% or less, and more preferably 120% or more and 300% or less with respect to the basis weight of the second region 42.
 同様に、以上の有利な効果を一層顕著なものとする観点から、第1領域41の長さは、吸収性コア5の全長の40%以上であることが好ましく、45%以上であることが更に好ましく、50%以上であることが一層好ましい。また80%以下であることが好ましく、75%以下であることが更に好ましく、70%以下であることが一層好ましい。例えば第1領域41の長さは、吸収性コア5の全長の40%以上80%以下であることが好ましく、45%以上75%以下であることが更に好ましく、50%以上70%以下であることが一層好ましい。一方、腹側第2領域42A及び背側第2領域42Bの長さは、それぞれ独立に、吸収性コア5の全長の10%以上30%以下であることが好ましく、12%以上28%以下であることが更に好ましく、15%以上25%以下であることが一層好ましい。腹側第2領域42Aの長さと背側第2領域42Bの長さとが異なる場合には、腹側第2領域42Aの方が長くてもよく、あるいは背側第2領域42Bの方が長くてもよい。 Similarly, from the viewpoint of making the above advantageous effects more prominent, the length of the first region 41 is preferably 40% or more of the entire length of the absorbent core 5, and preferably 45% or more. More preferably, it is more preferably 50% or more. Further, it is preferably 80% or less, more preferably 75% or less, and further preferably 70% or less. For example, the length of the first region 41 is preferably 40% or more and 80% or less of the entire length of the absorbent core 5, more preferably 45% or more and 75% or less, and 50% or more and 70% or less. More preferably. On the other hand, the length of the ventral second region 42A and the dorsal second region 42B is preferably 10% or more and 30% or less of the entire length of the absorbent core 5, and is preferably 12% or more and 28% or less. More preferably, it is 15% or more and 25% or less. When the length of the ventral second region 42A and the length of the dorsal second region 42B are different, the ventral second region 42A may be longer, or the dorsal second region 42B may be longer. Also good.
 第1領域41の坪量と第2領域42の坪量との比率は上述のとおりであるところ、低坪量領域である第2領域42の坪量そのものの値は、100g/m以上であることが好ましく、120g/m以上であることが更に好ましく、150g/m以上であることが一層好ましい。また600g/m以下であることが好ましく、550g/m以下であることが更に好ましく、500g/m以下であることが一層好ましい。例えば第2領域42の坪量は、100g/m以上600g/m以下であることが好ましく、120g/m以上550g/m以下であることが更に好ましく、150g/m以上500g/m以下であることが一層好ましい。一方、第1領域41の坪量は、第1領域41の坪量と第2領域42の坪量との比率が上述の範囲内であることを条件として、150g/m以上900g/m以下であることが好ましく、180g/m以上850g/m以下であることが更に好ましく、200g/m以上800g/m以下であることが一層好ましい。 The ratio of the basis weight of the first region 41 and the basis weight of the second region 42 is as described above, and the value of the basis weight itself of the second region 42 that is the low basis weight region is 100 g / m 2 or more. Preferably, it is 120 g / m 2 or more, and more preferably 150 g / m 2 or more. Also it is preferably 600 g / m 2 or less, further preferably 550 g / m 2 or less, and still more preferably 500 g / m 2 or less. For example, the basis weight of the second region 42 is preferably 100 g / m 2 or more and 600 g / m 2 or less, more preferably 120 g / m 2 or more and 550 g / m 2 or less, and 150 g / m 2 or more and 500 g / m 2 or less. More preferably, it is m 2 or less. On the other hand, the basis weight of the first region 41, on condition that the ratio of the basis weight and the basis weight of the second region 42 of the first region 41 is within the above range, 150 g / m 2 or more 900 g / m 2 preferably less, and more preferably still more preferably 180 g / m 2 or more 850 g / m 2 or less, 200 g / m 2 or more 800 g / m 2 or less.
 上述した第1領域41と第2領域42との坪量の大小関係は、吸収性コア5の全体について測定された坪量を比較したものであるところ、吸収性コア5を構成するパルプ繊維等の親水性繊維の坪量及び吸水性ポリマーの坪量に関しても、第1領域41は第2領域42よりも高いことが好ましい。つまり第1領域41を構成する親水性繊維の坪量は、第2領域42を構成する親水性繊維の坪量よりも高いことが好ましい。また、第1領域41を構成する吸水性ポリマーの坪量は、第2領域42を構成する吸水性ポリマーの坪量よりも高いことが好ましい。このような坪量関係にすることで、排尿点付近の吸収容量を向上でき、液漏れ防止に効果があるだけでなく、ゲルブロッキングを抑制できるので好ましい。この場合、腹側第2領域42Aにおける親水性繊維の坪量と、背側第2領域42Bにおける親水性繊維の坪量とは実質的に同じであることが好ましく、同様に、腹側第2領域42Aにおける吸水性ポリマーの坪量と、背側第2領域42Bにおける吸水性ポリマーの坪量も実質的に同じであることが好ましい。「実質的に」の意味は先に述べたとおりである。 The magnitude relation of the basic weight of the 1st field 41 mentioned above and the 2nd field 42 is a place where the basic weight measured about the whole absorptive core 5 is compared, pulp fiber etc. which constitute absorptive core 5 The first region 41 is preferably higher than the second region 42 with respect to the basis weight of the hydrophilic fiber and the basis weight of the water-absorbing polymer. That is, it is preferable that the basis weight of the hydrophilic fiber constituting the first region 41 is higher than the basis weight of the hydrophilic fiber constituting the second region 42. Further, the basis weight of the water-absorbing polymer constituting the first region 41 is preferably higher than the basis weight of the water-absorbing polymer constituting the second region 42. Such a basis weight relationship is preferable because it can improve the absorption capacity near the urination point and is effective not only in preventing liquid leakage but also in suppressing gel blocking. In this case, it is preferable that the basis weight of the hydrophilic fiber in the ventral second region 42A and the basis weight of the hydrophilic fiber in the dorsal second region 42B are substantially the same. It is preferable that the basis weight of the water absorbent polymer in the region 42A and the basis weight of the water absorbent polymer in the back-side second region 42B are substantially the same. The meaning of “substantially” is as described above.
 図7に示すとおり、第1領域41は、本体長手方向Xに延びる複数条の折曲誘導部51,52a,52bからなる折曲誘導部群50を有している。折曲誘導部群50は、本体幅方向Yの中央域に位置する中央折曲誘導部51と、中央折曲誘導部51の両側部に位置する一対の側部折曲誘導部52a,52bとからなる。折曲誘導部群50を構成する折曲誘導部51,52a,52bは、本体長手方向Xに沿った長さが同じでもよく、あるいは異なっていてもよい。特に各側部折曲誘導部52a,52bの長さが同じであると、装着時のフィット性がより良好となるので好ましい。この利点を一層顕著にする観点から、各側部折曲誘導部52a,52bの長さは、50mm以上であることが好ましく、70mm以上であることが更に好ましい。また、300mm以下であることが好ましく、250mm以下であることが更に好ましい。例えば各側部折曲誘導部52a,52bの長さは、50mm以上300mm以下であることが好ましく、70mm以上250mm以下であることが更に好ましい。 As shown in FIG. 7, the first region 41 has a bending guide portion group 50 composed of a plurality of bending guide portions 51, 52 a, 52 b extending in the longitudinal direction X of the main body. The bending guide portion group 50 includes a central bending guide portion 51 located in the central region in the body width direction Y, and a pair of side bending guide portions 52a and 52b located on both sides of the central bending guide portion 51. Consists of. The bending guide portions 51, 52a, and 52b constituting the bending guide portion group 50 may have the same or different lengths along the main body longitudinal direction X. In particular, it is preferable that the lengths of the side bending guide portions 52a and 52b are the same because the fit at the time of mounting becomes better. From the viewpoint of making this advantage even more conspicuous, the length of each side bending guide 52a, 52b is preferably 50 mm or more, and more preferably 70 mm or more. Moreover, it is preferable that it is 300 mm or less, and it is still more preferable that it is 250 mm or less. For example, the length of each side bending guide 52a, 52b is preferably 50 mm or more and 300 mm or less, and more preferably 70 mm or more and 250 mm or less.
 各側部折曲誘導部52a,52bの長さが同じである場合、それらの腹側部A側の端部の位置は同じでもよく、あるいは異なっていてもよい。同様に、背側部B側の端部の位置は同じでもよく、あるいは異なっていてもよい。図7に示す実施形態においては、各側部折曲誘導部52a,52bの腹側部A側の端部の位置は同じであり、したがって背側部B側の端部の位置も同じになっている。 When the lengths of the side bending guide portions 52a and 52b are the same, the positions of the end portions on the ventral side A side may be the same or different. Similarly, the position of the end portion on the back side B side may be the same or different. In the embodiment shown in FIG. 7, the positions of the end portions on the ventral side A side of the side bending guide portions 52 a and 52 b are the same, and therefore the positions of the end portions on the back side B side are also the same. ing.
 一方、中央折曲誘導部51は、側部折曲誘導部52a,52bよりも短いことが、はいはいができる前の動きが少ない低月齢の乳児において、排泄物を漏れさせず効率的に吸収させることができ、更にはフィット性を高めることができる点から好ましい。この効果を一層顕著なものとする観点から、中央折曲誘導部51の長さは、側部折曲誘導部52a,52bの長さの20%以上であることが好ましく、30%以上であることが更に好ましい。また、80%以下であることが好ましく、70%以下であることが更に好ましい。例えば、中央折曲誘導部51の長さは、側部折曲誘導部52a,52bの長さの20%以上80%以下であることが好ましく、30%以上70%以下であることが更に好ましい。 On the other hand, the central bending guiding part 51 is shorter than the side bending guiding parts 52a and 52b, and efficiently absorbs excrement without leaking in a young infant with little movement before yes. This is preferable from the viewpoint that the fitting property can be improved. From the viewpoint of making this effect even more prominent, the length of the central bending guiding portion 51 is preferably 20% or more of the length of the side bending guiding portions 52a and 52b, more preferably 30% or more. More preferably. Further, it is preferably 80% or less, and more preferably 70% or less. For example, the length of the central bending guiding portion 51 is preferably 20% to 80% and more preferably 30% to 70% of the length of the side bending guiding portions 52a and 52b. .
 中央折曲誘導部51は、側部折曲誘導部52a,52bよりも短い場合、中央折曲誘導部51の両端部を、側部折曲誘導部52a,52bの両端部よりも、本体長手方向Xの中央寄りに位置させることができる。あるいは、中央折曲誘導部51の両端部のうちの一方の端部を、側部折曲誘導部52a,52bの両端部のうちの一方の端部よりも、本体長手方向Xの端縁寄りに位置させることができる。更に、図5(a)に示すとおり、中央折曲誘導部51の両端部のうちの一方の端部の位置を、側部折曲誘導部52a,52bの両端部のうちの一方の端部の位置と一致させることができる。これらの形態のうち、図5(a)に示す形態を採用すると、装着時のフィット性が高まり装着時の快適性が向上するので好ましい。 When the center bending guide part 51 is shorter than the side part bending guide parts 52a and 52b, the both ends of the center bending guide part 51 are longer than the both end parts of the side part bending guide parts 52a and 52b. It can be positioned closer to the center in the direction X. Alternatively, one end portion of both end portions of the central bending guide portion 51 is closer to the end in the main body longitudinal direction X than one end portion of both end portions of the side bending guide portions 52a and 52b. Can be located. Furthermore, as shown to Fig.5 (a), the position of one edge part of the both ends of the center bending induction | guidance | derivation part 51 is set as one edge part of the both ends of the side part bending induction parts 52a and 52b. Can be matched with the position of. Among these forms, it is preferable to employ the form shown in FIG. 5A because the fit at the time of wearing increases and the comfort at the time of wearing improves.
 特に図5(a)に示すとおり、腹側部A寄りの位置において、中央折曲誘導部51の両端部のうちの腹側部A寄りの端部の位置を、側部折曲誘導部52a,52bの両端部のうちの腹側部A寄りの端部の位置と一致させると、股下でのフィット性がより向上するので好ましい。この場合、中央折曲誘導部51の両端部のうちの背側部B寄りの端部は、排尿点よりも股下側に位置することが好ましい。 In particular, as shown in FIG. 5 (a), at the position near the ventral side A, the position of the end near the ventral side A among the both ends of the central bending guide 51 is set to the side bending guide 52a. , 52b, it is preferable to match the position of the end portion near the ventral side portion A because the fit property at the crotch is further improved. In this case, it is preferable that the edge part near the back side part B of the both ends of the center bending guide part 51 is located on the crotch side from the urination point.
 次に、本発明の更に別の実施形態を、図8ないし図12を参照しながら説明する。なお、図8ないし図12に関し特に説明しない点については、先に述べた図1ないし図7に関して詳述した説明が適宜適用される。また、図8ないし図12において図1ないし図7と同じ部材には同じ符号を付してある。本実施形態のパンツ型使い捨ておむつ1は、いわゆる分割タイプのパンツ型使い捨ておむつである。おむつ1は、縦長の吸収体23を含む吸収性本体2と、該吸収性本体2の非肌対向面側に固定された外装体3とを備えたパンツ型使い捨ておむつである。 Next, still another embodiment of the present invention will be described with reference to FIGS. Note that the description in detail with respect to FIGS. 1 to 7 described above is appropriately applied to points that are not particularly described with reference to FIGS. 8 to 12, the same members as those in FIGS. 1 to 7 are denoted by the same reference numerals. The pants-type disposable diaper 1 of the present embodiment is a so-called split-type pants-type disposable diaper. The diaper 1 is a pants-type disposable diaper including an absorbent main body 2 including a vertically long absorbent body 23 and an exterior body 3 fixed to the non-skin facing surface side of the absorbent main body 2.
 おむつ1は、図8に示すように、吸収性本体2と、該吸収性本体2の非肌対向面側に位置する外装体3とを具備している。そして、おむつ1の外装体3は、腹側シート部材31と背側シート部材32とを有している。おむつ1には、腹側シート部材31の長手方向(X方向)に沿う両側部と背側シート部材32の長手方向(X方向)に沿う両側部とが接合されて、一対のサイドシール部S,S、ウエスト開口部WO及び一対のレッグ開口部LO,LOが形成されている。該接合には、例えばヒートシール、高周波シール、超音波シール、接着剤等の公知の接合方法が用いられる。 As shown in FIG. 8, the diaper 1 includes an absorbent main body 2 and an exterior body 3 positioned on the non-skin facing surface side of the absorbent main body 2. And the exterior body 3 of the diaper 1 has the abdominal sheet member 31 and the back sheet member 32. The diaper 1 has both side portions along the longitudinal direction (X direction) of the ventral sheet member 31 and both side portions along the longitudinal direction (X direction) of the back side seat member 32, and a pair of side seal portions S. , S, a waist opening WO, and a pair of leg openings LO, LO. For the joining, for example, a known joining method such as heat sealing, high frequency sealing, ultrasonic sealing, adhesive, or the like is used.
 おむつ1において、外装体3を構成する腹側シート部材31及び背側シート部材32は、それぞれ、おむつ1の展開、かつ伸長状態(図9参照)にて、幅方向(Y方向)に長い長方形状を有している。腹側シート部材31及び背側シート部材32はいずれも、図8及び図12に示すように、おむつの最外面をなす外層シート材35と、外層シート材35の肌対向面側に配された内層シート材36と、両シート35,36間に配された複数本の糸状の弾性部材33とを備えている。外層シート材35及び内層シート材36は、同形同大に形成されており、それぞれ、おむつ1の展開、かつ伸長状態(図9参照)において、幅方向(Y方向)に長い長方形状を有している。複数本の弾性部材33は、それぞれ幅方向(Y方向)に伸長状態で延びており、おむつの長手方向(X方向)に間隔を開けて配されている。外層シート材35及び内層シート材36は、互いの輪郭を一致させて重ね合わされ、散点状に配された多数の融着部(不図示)で互いに接合して形成されている。おむつ1においては、複数本の弾性部材33は、外層シート材35及び内層シート材36間に配され、前記融着部(不図示)を通らないように配されている。 In the diaper 1, the abdominal sheet member 31 and the back sheet member 32 constituting the exterior body 3 are each a rectangle that is long in the width direction (Y direction) when the diaper 1 is unfolded and expanded (see FIG. 9). It has a shape. As shown in FIGS. 8 and 12, the ventral sheet member 31 and the dorsal sheet member 32 are both disposed on the skin facing surface side of the outer layer sheet material 35 that forms the outermost surface of the diaper and the outer layer sheet material 35. An inner layer sheet material 36 and a plurality of thread-like elastic members 33 disposed between the sheets 35 and 36 are provided. The outer layer sheet material 35 and the inner layer sheet material 36 are formed in the same shape and size, and each has a rectangular shape that is long in the width direction (Y direction) when the diaper 1 is unfolded and expanded (see FIG. 9). is doing. The plurality of elastic members 33 extend in the width direction (Y direction), respectively, and are arranged at intervals in the longitudinal direction (X direction) of the diaper. The outer layer sheet material 35 and the inner layer sheet material 36 are superposed with the contours of each other being coincident with each other, and are joined to each other by a large number of fused portions (not shown) arranged in a dotted pattern. In the diaper 1, the plurality of elastic members 33 are arranged between the outer layer sheet material 35 and the inner layer sheet material 36 so as not to pass through the fused portion (not shown).
 腹側シート部材31及び背側シート部材32は、それぞれ、図8に示すように、吸収性本体2と重なる領域に、弾性部材33の伸縮機能が低減された弱機能化領域を有している。詳述すると、腹側シート部材31及び背側シート部材32における複数本の弾性部材33は、吸収性本体2と重なる領域において、それぞれが個々複数個に分断されており、細かく分断された弾性部材33は、もはや収縮力を殆ど有しない状態となって腹側シート部材31及び背側シート部材32に弱機能化領域を形成している。 As shown in FIG. 8, each of the abdominal sheet member 31 and the back sheet member 32 has a weakly functioning area where the elastic member 33 has a reduced expansion / contraction function in an area overlapping the absorbent main body 2. . More specifically, the plurality of elastic members 33 in the abdominal sheet member 31 and the back sheet member 32 are each divided into a plurality of pieces in the region overlapping the absorbent main body 2, and the elastic members are finely divided. 33 no longer has a contracting force and forms a weakly functionalized region in the ventral seat member 31 and the dorsal seat member 32.
 おむつ1の吸収性本体2は、図12に示すように、長手方向(X方向)に長い長方形状の吸収体23と、吸収体23の肌対向面側に配された液透過性の表面シート21と、吸収体23の非肌対向面側に配された液難透過性の裏面シート22とを備えており、図9に示すように、長手方向(X方向)に長い長方形状に形成されている。 As shown in FIG. 12, the absorbent main body 2 of the diaper 1 has a rectangular absorbent body 23 that is long in the longitudinal direction (X direction), and a liquid-permeable surface sheet disposed on the skin facing surface side of the absorbent body 23. 21 and a liquid-impervious back sheet 22 disposed on the non-skin facing surface side of the absorbent body 23, and as shown in FIG. 9, is formed in a rectangular shape that is long in the longitudinal direction (X direction). ing.
 おむつ1においては、図9ないし図11に示すように、吸収性本体2の長手方向(X方向)に沿う両側部に、吸収性本体2の全長にわたって、液抵抗性ないし撥水性で、かつ通気性の素材から構成された立体ギャザー4,4が形成されている。各立体ギャザー4の自由端の近傍には、立体ギャザー形成用弾性部材42が伸長状態で配されている。おむつ1の着用中には、立体ギャザー形成用弾性部材42が収縮することにより立体ギャザー4が起立し、股下部Cにギャザーを形成して、吸収性本体2から幅方向(Y方向)外方への液の流出が阻止される。 In the diaper 1, as shown in FIGS. 9 to 11, on both sides along the longitudinal direction (X direction) of the absorbent main body 2, it is liquid-resistant or water-repellent and ventilated over the entire length of the absorbent main body 2. Three-dimensional gathers 4 and 4 made of a sex material are formed. In the vicinity of the free end of each three-dimensional gather 4, a three-dimensional gather forming elastic member 42 is arranged in an extended state. While the diaper 1 is worn, the three-dimensional gather forming elastic member 42 contracts to raise the three-dimensional gather 4 to form a gather on the crotch C, and outward from the absorbent main body 2 in the width direction (Y direction). The outflow of liquid to the is prevented.
 吸収性本体2の吸収体23は、パルプ繊維等の繊維の集合体に吸水性ポリマーの粒子を保持させてなる吸収性コア(不図示)と、該吸収性コア(不図示)を被覆するコアラップシート(不図示)とからなる。この吸収性コアは、これまで説明してきた図5ないし図7に示す吸収性コアのうちのいずれか一つと同様の構造を有している。おむつ1においては、吸収体23を構成する吸収性コアは、図12に示すように、背側部B側(背側部Bの背側シート部材32と重なっている部分)の厚みが、腹側部A側(腹側部Aの腹側シート部材31と重なっている部分)の厚みよりも小さくなっており、背側部Bの柔軟性をより奏させるようにする観点から、腹側部A側(腹側部Aの腹側シート部材31と重なっている部分)の厚みの10%以上75%以下であることが好ましく、腹側部A側の厚みの15%以上50%以下であることが更に好ましい。具体的には、背側部B側の吸収性コア5の厚みは、0.5mm以上6mm以下であることが好ましく、1mm以上5mm以下であることが更に好ましい。また、腹側部A側の吸収性コアの厚みは、1mm以上9mm以下であることが好ましく、2mm以上7.5mm以下であることが更に好ましい。吸収性コアの厚みは、無荷重下で測定する。 The absorbent body 23 of the absorbent main body 2 includes an absorbent core (not shown) in which water-absorbing polymer particles are held in an aggregate of fibers such as pulp fibers, and a core that covers the absorbent core (not shown). It consists of a wrap sheet (not shown). This absorptive core has the same structure as any one of the absorptive cores shown in FIGS. In the diaper 1, the absorptive core which comprises the absorber 23 has the thickness of the back side B side (the part which overlaps with the back side seat member 32 of the back side B) as shown in FIG. From the viewpoint of reducing the thickness of the side portion A side (the portion overlapping the ventral side sheet member 31 of the ventral side portion A) and making the back side portion B more flexible, the ventral side portion It is preferably 10% or more and 75% or less of the thickness of the A side (portion overlapping the ventral sheet member 31 of the ventral side A), and is 15% or more and 50% or less of the thickness of the ventral side A side. More preferably. Specifically, the thickness of the absorbent core 5 on the back side B side is preferably 0.5 mm or more and 6 mm or less, and more preferably 1 mm or more and 5 mm or less. The thickness of the absorptive core on the ventral part A side is preferably 1 mm or more and 9 mm or less, and more preferably 2 mm or more and 7.5 mm or less. The thickness of the absorbent core is measured under no load.
 背側部B側の吸収性コア、あるいは腹側部A側の吸収性コアとは、分割タイプのおむつ1においては、背側部Bの背側シート部材32と吸収性本体2とが重なっている部分、あるいは、腹側部Aの腹側シート部材31と吸収性本体2とが重なっている部分を意味するが、分割タイプ以外の使い捨ておむつの場合には、パンツ型使い捨ておむつを展開して伸長させた状態において外装体3をX方向に三等分して、背側部、股下部及び腹側部に区分し、該区分した背側部に配された吸収性コア、あるいは該区分した腹側部に配された吸収性コアを意味する。 In the split type diaper 1, the back side sheet member 32 of the back side B and the absorbent main body 2 overlap with the absorbent core on the back side B side or the absorbent core on the abdominal side A side. Or a portion where the abdominal sheet member 31 of the abdominal side A and the absorbent main body 2 overlap, in the case of a disposable diaper other than the split type, unfold the pants-type disposable diaper In the stretched state, the exterior body 3 is divided into three equal parts in the X direction, and divided into a back side part, a crotch part, and an abdomen side part, and the absorbent core disposed on the divided back side part or the divided part. It means the absorptive core arranged on the ventral part.
 また、おむつ1においては、吸収体23を構成する吸収性コアは、背側部B側(背側部Bの背側シート部材32と重なっている部分)の坪量が、腹側部A側(腹側部Aの腹側シート部材31と重なっている部分)の坪量よりも小さくなっており、背側部の柔軟性をより奏させるようにする観点から、腹側部A側の坪量の10%以上75%以下であることが好ましく、腹側部A側の坪量の20%以上65%以下であることが更に好ましい。具体的には、背側部B側の吸収性コアの坪量は、50g/m以上500g/m以下であることが好ましく、75g/m以上400g/m以下であることが更に好ましい。また、腹側部A側の吸収性コアの坪量は、150g/m以上900g/m以下であることが好ましく、200g/m以上800g/m以下であることが更に好ましい。 Moreover, in the diaper 1, the absorptive core which comprises the absorber 23 has the basis weight of the back side part B side (part which overlaps the back side sheet | seat member 32 of the back side part B), the stomach side part A side. From the standpoint of making the dorsal side portion more flexible, the basis weight of the ventral side portion A is smaller than the basis weight of the portion overlapping the ventral side sheet member 31 of the ventral side portion A. The amount is preferably 10% to 75%, more preferably 20% to 65% of the basis weight on the ventral part A side. Specifically, the basis weight of the absorbent core on the back side B side is preferably 50 g / m 2 or more and 500 g / m 2 or less, and more preferably 75 g / m 2 or more and 400 g / m 2 or less. preferable. Further, the basis weight of the absorbent core on the ventral side A side is preferably 150 g / m 2 or more and 900 g / m 2 or less, and more preferably 200 g / m 2 or more and 800 g / m 2 or less.
 更に、おむつ1においては、吸収体23を構成する吸収性コアは、背側部B側(背側部Bの背側シート部材32と重なっている部分)の密度が、腹側部A側(腹側部Aの腹側シート部材31と重なっている部分)の密度よりも小さくなっており、背側領域の柔軟性をより奏させるようにする観点から、腹側部A側の密度の10%以上75%以下であることが好ましく、腹側部A側の密度の20%以上65%以下であることが更に好ましい。具体的には、背側部B側の吸収性コアの密度は、0.01g/cm以上0.75g/cm以下であることが好ましく、0.03g/cm以上0.55g/cm以下であることが更に好ましい。また、腹側部A側の吸収性コアの密度は、0.1g/cm以上1g/cm以下であることが好ましく、0.15g/cm以上0.8g/cm以下であることが更に好ましい。 Further, in the diaper 1, the absorbent core constituting the absorbent body 23 has a density on the back side B side (portion overlapping the back side sheet member 32 of the back side B) on the ventral side A side ( From the viewpoint of making the dorsal region more flexible, the density of the ventral region A side is 10%. % Or more and 75% or less, more preferably 20% or more and 65% or less of the density on the ventral side A side. Specifically, the density of the absorbent core on the back side B side is preferably 0.01 g / cm 3 or more and 0.75 g / cm 3 or less, and 0.03 g / cm 3 or more and 0.55 g / cm. More preferably, it is 3 or less. Further, the density of the absorbent core on the ventral part A side is preferably 0.1 g / cm 3 or more and 1 g / cm 3 or less, and preferably 0.15 g / cm 3 or more and 0.8 g / cm 3 or less. Is more preferable.
 更にまた、おむつ1においては、背側部B側(背側部Bの背側シート部材32と重なっている部分)の吸収体23は、構成する吸収性ポリマーの含有量が、腹側部A側(腹側部Aの腹側シート部材31と重なっている部分)の吸収体23を構成する吸収性ポリマーの含有量に比べて少なくなっており、背側部の柔軟性をより奏させるようにする観点から、腹側部A側の吸収性ポリマーの含有量の10%以上75%以下であることが好ましく、腹側部A側の吸収性ポリマーの含有量の20%以上65%以下であることが更に好ましい。具体的には、背側部B側の吸収性ポリマーの含有量は、50g/m以上250g/m以下であることが好ましく、75g/m以上200g/m以下であることが更に好ましい。また、腹側部A側の吸収性ポリマーの含有量は、100g/m以上500g/m以下であることが好ましく、150g/m以上400g/m以下であることが更に好ましい。背側部B側の吸収性ポリマーの含有量、あるいは腹側部A側の吸収性ポリマーの含有量は、以下のようにして測定する。 Furthermore, in the diaper 1, the absorbent body 23 on the back side portion B side (the portion overlapping the back side sheet member 32 of the back side portion B) has an absorptive polymer content in the ventral side portion A. It is less than the content of the absorbent polymer constituting the absorbent body 23 on the side (portion overlapping the ventral sheet member 31 of the ventral side A) so that the dorsal side is more flexible. From the viewpoint of making it, it is preferably 10% or more and 75% or less of the content of the absorbent polymer on the ventral side A side, and 20% or more and 65% or less of the content of the absorbent polymer on the ventral side A side More preferably it is. Specifically, the content of the absorbent polymer on the back side B side is preferably 50 g / m 2 or more and 250 g / m 2 or less, and more preferably 75 g / m 2 or more and 200 g / m 2 or less. preferable. Further, the content of the absorbent polymer on the ventral side A side is preferably 100 g / m 2 or more and 500 g / m 2 or less, and more preferably 150 g / m 2 or more and 400 g / m 2 or less. The content of the absorbent polymer on the back side B side or the content of the absorbent polymer on the ventral side A side is measured as follows.
 <背側部B側の吸収性ポリマーの含有量、あるいは腹側部A側の吸収性ポリマーの含有量の測定方法>
 吸収体の腹側部A側及び背側部B側をそれぞれ5点、10cm×10cmの大きさに切り出す。指定の大きさのサンプルがとれない場合には、とれる範囲で切り出し、画像解析装置を用いてそのサンプルの面積を測定する。それらのサンプルを、それぞれ90℃で8時間以上乾燥処理を行い、室温にて平衡化した後に秤量する。各サンプルを、予め秤量済みのメッシュ袋に充填し、該メッシュ袋ごと、4質量%のアスコルビン酸及び0.02質量%のリボフラビンを含有する水溶液中に浸漬させ、該水溶液をサンプルに充分に含ませる。メッシュ袋を水溶液中から取り出し、サンプルを日光(紫外線)による低分子化処理を8時間×3日間施す。低分子化処理によって可溶化した成分を、メッシュ袋から水洗して分離除去する。リボフラビンにより着色された吸収性ポリマーの色が消失していない、又は水洗時のぬるぬる感が消失していない場合には、メッシュ袋を再度前記水溶液中に浸漬させ,日光による低分子化処理を繰り返す。すべてのサンプルについて前記ポリマーの色が完全に消失し、かつ水洗時のぬるぬる感が消失した時点で処理を終了する。メッシュ袋を遠心分離器によって800回転/分の速度で10分遠心して脱水する。90℃で18時間以上の乾燥を行い、室温で平衡化した後、残存物を内包した状態のメッシュ袋の重量を秤量する。低分子化処理後の重量からメッシュ袋単体の重量を差し引いた値をサンプル中のパルプ繊維の含有量とし、予め測定済みのサンプル重量からパルプ繊維の重量を差し引いた値を単位面積あたりに換算した値を吸水性ポリマーの含有量とする。
<Measurement method of content of absorbent polymer on back side B side or content of absorbent polymer on ventral side A>
Cut the ventral side A side and the back side B side of the absorbent body into 5 points and 10 cm × 10 cm in size, respectively. When a sample of a specified size cannot be taken, the sample is cut out in a range where it can be taken, and the area of the sample is measured using an image analyzer. These samples are each dried at 90 ° C. for 8 hours or more, equilibrated at room temperature, and weighed. Each sample is filled in a pre-weighed mesh bag, and the mesh bag is immersed in an aqueous solution containing 4% by mass ascorbic acid and 0.02% by mass riboflavin, and the aqueous solution is sufficiently contained in the sample. Make it. The mesh bag is taken out from the aqueous solution, and the sample is subjected to low molecular weight treatment with sunlight (ultraviolet rays) for 8 hours × 3 days. The components solubilized by the low molecular weight treatment are separated and removed by washing with water from the mesh bag. If the color of the absorbent polymer colored by riboflavin has not disappeared, or the slimy feeling when washed with water has not disappeared, the mesh bag is immersed again in the aqueous solution and the molecular weight reduction treatment by sunlight is repeated. . The processing is terminated when the color of the polymer has completely disappeared for all the samples and the slimy feeling at the time of washing with water has disappeared. The mesh bag is dewatered by centrifuging for 10 minutes at a speed of 800 rpm with a centrifuge. After drying at 90 ° C. for 18 hours or more and equilibrating at room temperature, the weight of the mesh bag containing the residue is weighed. The value obtained by subtracting the weight of the mesh bag from the weight after the molecular weight reduction treatment is taken as the pulp fiber content in the sample, and the value obtained by subtracting the weight of the pulp fiber from the pre-measured sample weight is converted per unit area. The value is the content of the water-absorbing polymer.
 おむつ1においては、吸収体23は、図9に示すように、折曲誘導部51,52a,52bを有している。折曲誘導部51,52a,52bは、股下領域Cの全域にわたって長手方向(X方向)に延びている。折曲誘導部51,52a,52bは、幅方向(Y方向)に等間隔を開けて並置されている。 In the diaper 1, the absorbent body 23 has bending guide portions 51, 52a, and 52b as shown in FIG. The bending guiding portions 51, 52a, 52b extend in the longitudinal direction (X direction) over the entire crotch region C. The bending guide portions 51, 52a, 52b are juxtaposed at equal intervals in the width direction (Y direction).
 おむつ1は、図10ないし図12に示すように、吸収性本体2の長手方向(X方向)の両端部2a,2bそれぞれが、外装体3と、外装体3とは別体の幅方向(Y方向)に延びる帯状シート6とで被覆され、接着剤7を介して外装体3と帯状シート6との間に固定されて形成されている。詳述すると、おむつ1においては、図12に示すように、吸収性本体2は、腹側部A側の一端部2a側が腹側シート部材31と重なっており、その非肌対向面が、外装体3を構成する内層シート材32に接着剤(不図示)を介して固定されている。そして、おむつ1においては、吸収性本体2は、背側部B側の他端部2b側が背側シート部材32と重なっており、その非肌対向面が、外装体3を構成する内層シート材32に接着剤(不図示)を介して固定されている。すなわち、おむつ1においては、吸収性本体2は、腹側部A側の一端部2a側の肌対向面が幅方向(Y方向)に延びる帯状シート6で被覆され、一端部2aが、接着剤7aを介して腹側シート部材31と帯状シート6との間に固定されている。そして、おむつ1においては、吸収性本体2は、背側部B側の他端部2b側の肌対向面が幅方向(Y方向)に延びる帯状シート6で被覆され、他端部2bが、接着剤7bを介して背側シート部材32と帯状シート6との間に固定されている。 As shown in FIGS. 10 to 12, the diaper 1 has both end portions 2 a and 2 b in the longitudinal direction (X direction) of the absorbent main body 2 in the width direction of the exterior body 3 and the exterior body 3. It is covered with a belt-like sheet 6 extending in the (Y direction), and is fixed between the exterior body 3 and the belt-like sheet 6 via an adhesive 7. More specifically, in the diaper 1, as shown in FIG. 12, the absorbent main body 2 has the abdominal side A end portion 2 a side overlapped with the abdominal sheet member 31, and the non-skin facing surface is the exterior. The inner layer sheet material 32 constituting the body 3 is fixed via an adhesive (not shown). And in the diaper 1, as for the absorptive main body 2, the other end part 2b side by the side of the back side B has overlapped with the back side sheet member 32, and the non-skin opposing surface constitutes the inner layer sheet material which comprises the exterior body 3. 32 is fixed via an adhesive (not shown). That is, in the diaper 1, the absorptive main body 2 is covered with a belt-like sheet 6 in which the skin facing surface on the one end 2a side on the abdominal side A is extended in the width direction (Y direction), and the one end 2a is an adhesive. It is fixed between the ventral sheet member 31 and the belt-like sheet 6 via 7a. And in the diaper 1, the absorptive main body 2 is covered with a belt-like sheet 6 in which the skin facing surface on the other end 2b side on the back side B side extends in the width direction (Y direction), and the other end 2b is It is fixed between the back sheet member 32 and the belt-like sheet 6 via the adhesive 7b.
 吸収性本体2の長手方向(X方向)の両端部2a,2bそれぞれを覆う帯状シート6は、おむつ1においては、おむつ1の展開、かつ伸長状態(図9参照)にて、腹側シート部材31又は背側シート部材32の幅方向(Y方向)の全域にわたって延びており、幅方向(Y方向)に長い長方形状を有している。帯状シート6の幅(X方向の長さ)は、腹側シート部材31又は背側シート部材32のX方向の長さに対して、10%以上60%以下であることが好ましく、15%以上50%以下であることが更に好ましい。 In the diaper 1, the belt-like sheet 6 that covers both ends 2a and 2b in the longitudinal direction (X direction) of the absorbent main body 2 is the abdominal sheet member when the diaper 1 is unfolded and extended (see FIG. 9). 31 or the back side sheet member 32 extends over the entire region in the width direction (Y direction) and has a long rectangular shape in the width direction (Y direction). The width (length in the X direction) of the belt-like sheet 6 is preferably 10% or more and 60% or less, and 15% or more with respect to the length in the X direction of the ventral sheet member 31 or the back sheet member 32. More preferably, it is 50% or less.
 図12に示すように、帯状シート6は、吸収性本体2の腹側部A側の一端部2aを被覆して、接着剤7aを介して腹側シート部材31に固定されている。また、帯状シート6は、吸収性本体2の背側部B側の他端部2bを被覆して、接着剤7bを介して背側シート部材32に固定されている。更に、おむつ1においては、帯状シート6の両端部(X方向に沿う両側部)は、腹側シート部材31の長手方向(X方向)に沿う両側部と背側シート部材32の長手方向(X方向)に沿う両側部とが接合されて一対のサイドシール部S,Sを形成する際に、腹側シート部材31の両側部と背側シート部材32の両側部との間に同時に接合されている。 As shown in FIG. 12, the belt-like sheet 6 covers the one end 2a on the ventral side A side of the absorbent main body 2 and is fixed to the ventral sheet member 31 via an adhesive 7a. The belt-like sheet 6 covers the other end 2b on the back side B of the absorbent main body 2 and is fixed to the back side sheet member 32 via an adhesive 7b. Furthermore, in the diaper 1, both end portions (both side portions along the X direction) of the belt-like sheet 6 are formed on both side portions along the longitudinal direction (X direction) of the ventral sheet member 31 and the longitudinal direction (X When the two side portions along the direction) are joined to form the pair of side seal portions S, S, the two side portions of the ventral seat member 31 and the both sides of the back seat member 32 are joined at the same time. Yes.
 接着剤7に関しては、図10ないし図12に示すように、背側部Bの接着剤7bは、その塗布量が、腹側部Aの接着剤7aの塗布量に比べて少なくなっている。接着剤7bの塗布量は、吸収性ポリマーの脱落防止及び着用感の向上をより奏させるようにする観点から、接着剤7aの塗布量の好ましくは2/25以上、更に好ましくは2/15以上であり、接着剤7aの塗布量の好ましくは4/5以下、更に好ましくは2/3以下であり、そして、接着剤7aの塗布量の好ましくは2/25以上4/5以下であり、更に好ましくは2/15以上2/3以下である。具体的には、接着剤7bの塗布量は、同様の観点から、2g/m以上10g/m以下であることが好ましく、2g/m以上5g/m以下であることが更に好ましい。また、接着剤7aの塗布量は、同様の観点から、5g/m以上25g/m以下であることが好ましく、5g/m以上15g/m以下であることが更に好ましい。背側部Bの接着剤7bの塗布量、あるいは腹側部Aの接着剤7aの塗布量は、以下のようにして測定する。 Regarding the adhesive 7, as shown in FIGS. 10 to 12, the application amount of the adhesive 7 b on the back side B is smaller than the application amount of the adhesive 7 a on the abdominal side A. The application amount of the adhesive 7b is preferably 2/25 or more, more preferably 2/15 or more of the application amount of the adhesive 7a, from the viewpoint of further preventing the absorbent polymer from falling off and improving the wearing feeling. Preferably, the application amount of the adhesive 7a is 4/5 or less, more preferably 2/3 or less, and the application amount of the adhesive 7a is preferably 2/25 or more and 4/5 or less, Preferably they are 2/15 or more and 2/3 or less. Specifically, the coating amount of the adhesive 7b, from the same viewpoint, it is more preferable is preferably 2 g / m 2 or more 10 g / m 2 or less, 2 g / m 2 or more 5 g / m 2 or less . The coating amount of the adhesive 7a, from the same viewpoint, it is more preferable that at 5 g / m 2 or more 25 g / m 2 or less is preferable, 5 g / m 2 or more 15 g / m 2 or less. The application amount of the adhesive 7b on the back side B or the application amount of the adhesive 7a on the abdominal side A is measured as follows.
 <背側部Bの接着剤7bの塗布量、あるいは腹側部Aの接着剤7aの塗布量の測定方法>
 腹側部A又は背側部Bに接着されている帯状シートを、外装体及び吸収体から引き剥がした後、正確に秤量する。また、その帯状シートの面積を、画像解析装置を用いて測定する。該帯状シートを、酢酸イソペンチル及び酢酸ノルマルブチルを混合した有機溶媒中に浸漬させることによって、該帯状シートに接着している接着剤を洗い流す。洗浄後の該帯状シートは、一週間程度静置して乾燥した後、正確に秤量する。洗浄前と洗浄後の帯状シートの質量差を算出し、単位面積あたりの値に換算することで、接着剤の塗布量を求める。
<Measurement Method of Application Amount of Adhesive 7b on Back Side B or Application Amount of Adhesive 7a on Abdominal Side A>
The strip-like sheet bonded to the ventral side A or the back side B is peeled off from the exterior body and the absorbent body, and then accurately weighed. Further, the area of the belt-like sheet is measured using an image analyzer. By immersing the strip sheet in an organic solvent mixed with isopentyl acetate and normal butyl acetate, the adhesive adhered to the strip sheet is washed away. The band-like sheet after washing is left to stand for about a week and dried, and then accurately weighed. The mass difference between the belt-like sheet before and after washing is calculated, and converted to a value per unit area to obtain the amount of adhesive applied.
 接着剤7の塗布状態について説明すると、各接着剤7a,5bは、図10及び図11に示すように、吸収性本体2の長手方向(X方向)の端部端縁2a1,2b1を跨いで帯状シート6に塗布されている。詳述すると、背側部Bにおいては、接着剤7bは、図10及び図12に示すように、吸収性本体2の背側部B側の他端部2bの端縁2b1を跨いで帯状シート6の非肌対向面に塗布されている。また、腹側部Aにおいては、接着剤7aは、図11及び図12に示すように、吸収性本体2の腹側部A側の一端部2aの端縁2a1を跨いで帯状シート6の非肌対向面に塗布されている。ここで、接着剤7bが吸収性本体2の他端部2bの端縁2b1を跨いでいるとは、端縁2b1を境界にして、接着剤7bが、長手方向(X方向)前後に延在し、端縁2b1と交差していることを言う。接着剤7aについても同様に、吸収性本体2の一端部2aの端縁2a1を境界にして、長手方向(X方向)前後に延在し、端縁2a1と交差していることを言う。 The application state of the adhesive 7 will be described. As shown in FIGS. 10 and 11, the adhesives 7 a and 5 b straddle the end edges 2 a 1 and 2 b 1 in the longitudinal direction (X direction) of the absorbent main body 2. It is applied to the belt-like sheet 6. Specifically, in the back side portion B, the adhesive 7b is a belt-like sheet straddling the edge 2b1 of the other end portion 2b on the back side portion B side of the absorbent main body 2, as shown in FIGS. 6 is applied to the non-skin facing surface. Further, in the abdominal side A, the adhesive 7a is formed on the non-banded sheet 6 across the edge 2a1 of the one end 2a on the abdominal side A side of the absorbent main body 2 as shown in FIGS. It is applied to the skin facing surface. Here, the adhesive 7b straddles the edge 2b1 of the other end 2b of the absorbent main body 2 means that the adhesive 7b extends in the longitudinal direction (X direction) around the edge 2b1. And that it intersects the edge 2b1. Similarly, the adhesive 7a also extends in the longitudinal direction (X direction) around the edge 2a1 of the one end 2a of the absorbent main body 2 and intersects the edge 2a1.
 上述したように、背側部Bの接着剤7bは、その塗布量が、腹側部Aの接着剤7aの塗布量に比べて少なくなっており、おむつ1においては、接着剤7bは、その面積が、接着剤7aの塗布面積に比べて低くなっている。接着剤7bの塗布面積は、吸収性ポリマーの脱落防止及び着用感の向上をより奏させるようにする観点から、接着剤7aの塗布面積の好ましくは2/25以上、更に好ましくは2/15以上であり、接着剤7aの塗布面積の好ましくは4/5以下、更に好ましくは2/3以下であり、そして、接着剤7aの塗布面積の好ましくは2/25以上4/5以下であり、更に好ましくは2/15以上2/3以下である。具体的には、接着剤7bの塗布面積は、同様の観点から、1cm以上60cm以下であることが好ましく、3cm以上40cm以下であることが更に好ましい。また、接着剤7aの塗布面積は、同様の観点から、5cm以上80cm以下であることが好ましく、8cm以上60cm以下であることが更に好ましい。ここで、接着剤7bの面積が接着剤7aの塗布面積に比べて低くなっているとは、接着剤7bの塗布線が接着剤7aの塗布線に比べて細くなっていること、及び接着剤7bの塗布本数が接着剤7aの塗布本数に比べて少なくなっていることの少なくともいずれか一方を満たしていることを意味する。 As described above, the application amount of the adhesive 7b on the back side B is smaller than the application amount of the adhesive 7a on the abdominal side A. In the diaper 1, the adhesive 7b The area is lower than the application area of the adhesive 7a. The application area of the adhesive 7b is preferably 2/25 or more, more preferably 2/15 or more of the application area of the adhesive 7a from the viewpoint of further preventing the absorbent polymer from falling off and improving the wearing feeling. Preferably, the application area of the adhesive 7a is 4/5 or less, more preferably 2/3 or less, and the application area of the adhesive 7a is preferably 2/25 or more and 4/5 or less, Preferably they are 2/15 or more and 2/3 or less. Specifically, the application area of the adhesive 7b is preferably 1 cm 2 or more and 60 cm 2 or less, and more preferably 3 cm 2 or more and 40 cm 2 or less from the same viewpoint. The application area of the adhesive 7a is preferably 5 cm 2 or more and 80 cm 2 or less, and more preferably 8 cm 2 or more and 60 cm 2 or less from the same viewpoint. Here, the area of the adhesive 7b being lower than the application area of the adhesive 7a means that the application line of the adhesive 7b is thinner than the application line of the adhesive 7a, and the adhesive. This means that at least one of the application numbers of 7b is smaller than the application number of the adhesive 7a is satisfied.
 おむつ1においては、図10及び図12に示すように、背側部Bの接着剤7bは、吸収性本体2の他端部2bの端縁2b1近傍における、吸収性本体2と背側シート部材32とが重なっている領域に、言い換えれば、吸収性本体2の幅方向(Y方向)全域にのみ、幅方向(Y方向)に延びる螺旋を描く線状に塗布されている。螺旋を描く塗布線は、1本~3本であることが好ましく、おむつ1においては、2本形成されている。これら2本の螺旋を描く塗布線は、X方向においては、互いに一部が重なるように、間欠的に配されている。 In the diaper 1, as shown in FIGS. 10 and 12, the adhesive 7 b on the back side B is formed in the vicinity of the edge 2 b 1 of the other end 2 b of the absorbent body 2, and the absorbent main body 2 and the back seat member. In other words, it is applied to the region where 32 overlaps, in other words, only in the entire width direction (Y direction) of the absorbent main body 2 in a line drawing a spiral extending in the width direction (Y direction). The number of coating lines for drawing a spiral is preferably one to three. In the diaper 1, two are formed. The application lines that draw these two spirals are arranged intermittently so that they partially overlap each other in the X direction.
 また、おむつ1においては、図11及び図12に示すように、腹側部Aの接着剤7aは、吸収性本体2の一端部2aの端縁2a1近傍における、吸収性本体2と腹側シート部材31とが重なっている領域に、言い換えれば、吸収性本体2の幅方向(Y方向)全域にのみ、螺旋を描く塗布線は、2本~5本であることが好ましく、おむつ1においては、4本形成されている。これら4本の螺旋を描く塗布線は、X方向においては、互いに一部が重なるように、間欠的に配されている。 Moreover, in the diaper 1, as shown in FIG.11 and FIG.12, the adhesive agent 7a of the abdominal part A is the absorptive main body 2 and the abdominal sheet member in the edge 2a1 vicinity of the one end part 2a of the absorptive main body 2. In the region where 31 is overlapped, in other words, it is preferable that there are 2 to 5 coating lines for drawing a spiral only in the entire width direction (Y direction) of the absorbent main body 2. In the diaper 1, Four are formed. The application lines that draw these four spirals are arranged intermittently so that they partially overlap each other in the X direction.
 おむつ1においては、図10ないし図12に示すように、背側部Bの接着剤7bの螺旋を描く各塗布線の太さが、腹側部Aの接着剤7aの螺旋を描く塗布線の太さよりも細くなっている。また、背側部Bの接着剤7bの螺旋を描く塗布線の本数が、腹側部Aの接着剤7aの螺旋を描く塗布線の本数よりも少なくなっている。したがって、おむつ1においては、接着剤7bは、その面積が、接着剤7aの塗布面積に比べて低くなっている。なお、接着剤7a,7bは、おむつ1においては、上述したように螺旋を描く線状に形成されているが、ジグザグを描く線状、Y方向に直線状に延びる線状、スプレーで描く散点状,あるいはΩ状に形成されていてもよい。背側部Bの接着剤7bの塗布面積、あるいは腹側部Aの接着剤7aの塗布面積は、以下のようにして測定する。 In the diaper 1, as shown in FIGS. 10 to 12, the thickness of each coating line that draws the spiral of the adhesive 7 b on the back side B is the thickness of the coating line that draws the spiral of the adhesive 7 a on the ventral side A. It is thinner than the thickness. In addition, the number of application lines that draw the spiral of the adhesive 7b on the back side B is smaller than the number of application lines that draw the spiral of the adhesive 7a on the abdominal side A. Therefore, in the diaper 1, the area of the adhesive 7b is lower than the application area of the adhesive 7a. In the diaper 1, the adhesives 7 a and 7 b are formed in a linear shape that draws a spiral as described above. However, the linear shape that draws a zigzag, a linear shape that extends linearly in the Y direction, It may be formed in a dot shape or an Ω shape. The application area of the adhesive 7b on the back side B or the application area of the adhesive 7a on the abdominal side A is measured as follows.
 <背側部Bの接着剤7bの塗布面積、あるいは腹側部Aの接着剤7aの塗布面積の測定方法>
 腹側部A又は背側部Bの帯状シート上にトナーを散布する。帯状シート上の接着剤に接着しなかった過剰の未接着トナーは、掃除機により吸引して除去する。接着剤が塗布されている領域中の接着剤の塗布パターンが、いわゆるベタ塗りであり、その塗布形状が、長方形状や正方形状等、その面積を定規等で容易に測定できる形状である場合には、接着剤が塗布されている領域の、縦横の長さ等の寸法を定規等で測定して面積を算出し、接着剤の塗布面積とする。接着剤が塗布されている領域の接着剤の塗布パターンが、螺旋状に塗布されていたり、スプレーにより散点状に塗布されていたりする場合等には、接着剤が塗布されている領域について、画像処理機能を有する顕微鏡下でトナーにより着色された面積を測定する。なお、トナーで着色されている部分の顕微鏡を用いた観察は、25mmの面積を5点任意に抽出し、観察と画像処理によりトナーで着色されている部分の面積を詳細に算出する。
<Measurement Method of Application Area of Adhesive 7b on Back Side B or Application Area of Adhesive 7a on Abdominal Side A>
The toner is spread on the belt-like sheet on the ventral side A or the back side B. Excess unadhered toner that has not adhered to the adhesive on the belt-like sheet is removed by suction with a vacuum cleaner. When the application pattern of the adhesive in the area where the adhesive is applied is so-called solid coating, and the application shape is a shape that can be easily measured with a ruler or the like, such as a rectangular shape or a square shape Measure the dimensions of the region where the adhesive is applied, such as the length and width, with a ruler or the like, calculate the area, and use it as the adhesive application area. In the case where the adhesive application pattern in the area where the adhesive is applied is applied spirally or in the form of dots by spraying, etc., the area where the adhesive is applied, The area colored with toner is measured under a microscope having an image processing function. In the observation of the portion colored with the toner using a microscope, five areas of 25 mm 2 are arbitrarily extracted, and the area of the portion colored with the toner is calculated in detail by observation and image processing.
 上述したおむつ1の各部の形成材料について説明する。
 外装体3を構成する腹側シート部材31及び背側シート部材32を構成する外層シート材31、内層シート材32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シート材を特に制限なく用いることができ、不織布を用いることが好ましい。該不織布としては、エアスルー不織布、ヒートロール不織布、スパンレース不織布、スパンボンド不織布、メルトブローン不織布の単層の不織布又はこれらが2層以上に積層された積層不織布等を用いることができる。また、外層シート材31,内層シート材32として、不織布とフィルムとを一体化したシート等を用いることもできる。
The formation material of each part of the diaper 1 mentioned above is demonstrated.
As the outer layer sheet material 31 and the inner layer sheet material 32 constituting the stomach side sheet member 31 and the back side sheet member 32 constituting the exterior body 3, various sheet materials conventionally used for absorbent articles such as disposable diapers are used. It can use without a restriction | limiting especially, It is preferable to use a nonwoven fabric. As the nonwoven fabric, an air-through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a single layer nonwoven fabric of a melt blown nonwoven fabric, a laminated nonwoven fabric in which these layers are laminated, or the like can be used. Moreover, as the outer layer sheet material 31 and the inner layer sheet material 32, a sheet in which a nonwoven fabric and a film are integrated 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及び立体ギャザー形成用シート材41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、単層の樹脂フィルムや樹脂フィルムと不織布の積層体等を用いることができ、通気性の観点から透湿性のものが好ましい。吸収体23は、パルプ繊維等の繊維の集合体(不織布であってもよい)に吸水性ポリマーの粒子を保持させてなる吸収性コアを、ティッシュペーパー等からなるコアラップシートで被覆したものを用いることができる。立体ギャザー形成用シート材41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。 As the surface sheet 21, the back sheet 22, the absorber 23, the three-dimensional gather forming sheet material 41 and the like constituting the absorbent main body 2, various kinds of materials conventionally used for absorbent articles such as disposable diapers are particularly limited. Can be used. 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 single-layer resin film or a laminate of a resin film and a nonwoven fabric can be used, and a moisture-permeable sheet is preferable from the viewpoint of air permeability. Absorbent body 23 is obtained by coating an absorbent core formed by holding water-absorbing polymer particles on an aggregate of fibers such as pulp fibers (which may be a nonwoven fabric) with a core wrap sheet made of tissue paper or the like. Can be used. As the three-dimensional gather forming sheet material 41, a water-repellent single layer or multilayer nonwoven fabric or the like can be used.
 外装体3を構成する弾性部材33、吸収性本体2を構成する立体ギャザー形成用弾性部材42の形成素材としては、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、ポリウレタン等を用いることができる。弾性部材の形態としては、断面が矩形、正方形、円形、多角形状等の糸状(糸ゴム等)若しくは紐状(平ゴム 等)のもの、又はマルチフィラメントタイプの糸状のもの等を好ましく用いることができる。 Examples of materials for forming the elastic member 33 constituting the outer package 3 and the three-dimensional gathering elastic member 42 constituting the absorbent main body 2 include synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA , Stretchable polyolefin, polyurethane and the like can be used. As the form of the elastic member, it is preferable to use a thread-like (thread rubber etc.) or string-like (flat rubber hook etc.) having a cross section of a rectangle, square, circle, polygon, etc., or a multifilament type thread-like one. it can.
 帯状シート6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シート材を特に制限なく用いることができ、吸汗性及び液漏れ防止の観点から、メルトブローン不織布が好ましく用いられる。帯状シート6の坪量は、5g/m以上30g/m以下であることが好ましく、10g/m以上25g/m以下であることが更に好ましい。 As the belt-like sheet 6, various sheet materials conventionally used for absorbent articles such as disposable diapers can be used without particular limitation, and a melt blown nonwoven fabric is preferably used from the viewpoint of sweat absorption and prevention of liquid leakage. The basis weight of the belt-like sheet 6 is preferably 5 g / m 2 or more and 30 g / m 2 or less, more preferably 10 g / m 2 or more and 25 g / m 2 or less.
 各部材の固定には、接着剤あるいは熱融着等を利用して固定できる。用いられる接着剤(接着剤7を含む)としては、通常、使い捨ておむつ等の吸収性物品に用いられるものであれば、特に制限なく用いることができ、例えば、ホットメルト接着剤を用いることができる。ホットメルト接着剤としては、例えばスチレン-イソプレン-スチレンブロック共重合体(SIS)、スチレン-ブタジエン-スチレンブロック共重合体(SBS)、スチレン-エチレン-ブチレン-スチレン共重合体(SEBS)等のブロックコポリマー系のホットメルト接着剤が挙げられる。熱融着としては、使い捨ておむつ等の吸収性物品に用いられるものであれば、特に制限なく用いることができ、例えば、ヒートシール、高周波シール、超音波シールを用いることができる。 Each member can be fixed using an adhesive or heat fusion. As the adhesive (including the adhesive 7) to be used, any adhesive can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. For example, a hot melt adhesive can be used. . Examples of hot melt adhesives include blocks such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-styrene copolymer (SEBS). Copolymer-based hot melt adhesives may be mentioned. As heat fusion, if it is used for absorbent articles, such as a disposable diaper, it can use without a restriction | limiting especially, For example, a heat seal, a high frequency seal, and an ultrasonic seal can be used.
 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。おむつ1は、図12に示すように、吸収性本体2の長手方向(X方向)の両端部2a,2bそれぞれが、外装体3と、外装体3とは別体の幅方向(Y方向)に延びる帯状シート6とで被覆され、接着剤7a,7bを介して外装体3と帯状シート6との間に固定されて形成されている。そのため、吸収性本体2の端部2a,2bが着用者の肌に直接触れず、しかも、該端部2a,2bからの吸収体23を構成する吸収性ポリマーの脱落を防止することができ、使用感が向上する。更に、おむつ1は、図10ないし図12に示すように、帯状シート6を固定する背側部Bの接着剤7bの塗布量が、帯状シート6を固定する腹側部Aの接着剤7aの塗布量に比べて少なくなっている。そのため、腹側部Aよりも背側部Bの方が、通気性が向上しており、着用時に腹側領域よりも背側領域の方にかきやすい汗に関して考慮されており、着用感が更に向上する。 The effect of the diaper 1 of this embodiment mentioned above is demonstrated. As shown in FIG. 12, the diaper 1 is configured such that both end portions 2 a and 2 b in the longitudinal direction (X direction) of the absorbent main body 2 are separated from the exterior body 3 and the exterior body 3 in the width direction (Y direction). And is fixed between the exterior body 3 and the belt-like sheet 6 via adhesives 7a and 7b. Therefore, the end portions 2a, 2b of the absorbent main body 2 do not directly touch the wearer's skin, and the absorbent polymer constituting the absorbent body 23 from the end portions 2a, 2b can be prevented from falling off. Usability is improved. Further, as shown in FIGS. 10 to 12, the diaper 1 has an application amount of the adhesive 7 b on the back side B that fixes the belt-like sheet 6, and the amount of the adhesive 7 a on the belly side A that fixes the belt-like sheet 6. It is less than the coating amount. Therefore, the breathability is improved in the dorsal side B rather than the ventral side A, and it is considered with respect to sweat that is easier to scrub in the dorsal region than in the abdominal region at the time of wearing, and the feeling of wear is further increased. improves.
 また、おむつ1においては、帯状シート6を固定する各接着剤7a,7bは、図10及び図11に示すように、吸収性本体2の長手方向(X方向)の端部端縁2a1,2b1を跨いで帯状シート6に塗布されている。そのため、該端部2a,2bからの吸収体23を構成する吸収性ポリマーの脱落を確実に防止することができ、使用感が更に向上する。また、おむつ1においては、各接着剤7a,7bは、螺旋を描く線状に塗布されており、しかも、腹側シート部材31あるいは背側シート部材32と吸収性本体2とが重なっている領域にしか塗布されていない。そのため、通気性が向上しており、着用感が更に向上する。特に、おむつ1においては、接着剤7bの面積が、接着剤7aの塗布面積に比べて低くなっており、着用時に腹側領域よりも背側領域の方にかきやすい汗に関して更に考慮されており、着用感が更に向上する。 Moreover, in the diaper 1, each adhesive agent 7a, 7b which fixes the strip | belt-shaped sheet | seat 6 is end part edge 2a1, 2b1 of the longitudinal direction (X direction) of the absorptive main body 2 as shown in FIG.10 and FIG.11. Is applied to the belt-like sheet 6. Therefore, it is possible to reliably prevent the absorbent polymer that constitutes the absorber 23 from the end portions 2a and 2b from falling off, and the usability is further improved. Moreover, in the diaper 1, each adhesive agent 7a, 7b is apply | coated to the line which draws a spiral, and also the area | region where the abdominal sheet member 31 or the back sheet member 32 and the absorptive main body 2 have overlapped It is only applied to. Therefore, the air permeability is improved and the wearing feeling is further improved. In particular, in the diaper 1, the area of the adhesive 7 b is lower than the application area of the adhesive 7 a, and further consideration is given to sweat that is more likely to be worn toward the dorsal region than the ventral region when worn. The wearing feeling is further improved.
 また、おむつ1においては、着用者の尿が集中しやすい腹側部A側の吸収性コアの坪量が、背側部B側の吸収性コアの坪量よりも大きくなっているため、尿を充分に吸収できる。そして、背側部B側の吸収性コアの坪量が、腹側部A側の吸収性コアの坪量よりも小さくなっているので、塗布量の少ない背側部Bの接着剤7bでも、充分に帯状シート6を固定することができ、吸収性ポリマーの脱落を防止することができる。特に、背側部B側の吸収体23の吸収性ポリマーの含有量が、腹側部A側の吸収体23の吸収性ポリマーの含有量に比べて少なくなっているので、背側領域の柔軟性との効果を奏する。 Moreover, in the diaper 1, since the basic weight of the absorptive core of the abdominal part A side where a wearer's urine tends to concentrate is larger than the basic weight of the absorptive core of the back side part B side, Can be sufficiently absorbed. And since the basis weight of the absorptive core on the back side B side is smaller than the basis weight of the absorptive core on the abdominal side A side, the adhesive 7b of the back side B with a small amount of application, The belt-like sheet 6 can be sufficiently fixed, and the absorbent polymer can be prevented from falling off. In particular, since the content of the absorbent polymer in the absorbent body 23 on the back side B side is smaller than the content of the absorbent polymer in the absorbent body 23 on the ventral side A side, Has the effect of sex.
 また、おむつ1においては、背側部B側から腹側部A側にわたって吸収性コアに設けられた折曲誘導部51,52a,52bが、着用者の尿を吸収性コアの全域にわたって効率的に拡げるので、尿を充分に吸収できる。 Moreover, in the diaper 1, the bending induction | guidance | derivation part 51,52a, 52b provided in the absorptive core over the back | dorsal part B side to the abdominal part A side is efficient over the whole area | region of an absorptive core. Urine can be absorbed sufficiently.
 本実施形態のおむつ1においては、図8に示すように、外装体3が腹側部Aの腹側シート部材31と背側部Bの背側シート部材32とからなる分割タイプのパンツ型使い捨ておむつであるが、これに代えて、外装体3を構成する少なくとも外層シート21が、腹側部A、股下領域C及び背側部Bにわたって連続している一体化した外層体2を有するパンツ型使い捨ておむつとしてもよい。 In the diaper 1 of the present embodiment, as shown in FIG. 8, a split-type pants-type disposable in which the exterior body 3 includes a ventral sheet member 31 on the ventral part A and a back sheet member 32 on the back part B. It is a diaper, but instead of this, a pants type having an integrated outer layer body 2 in which at least the outer layer sheet 21 constituting the exterior body 3 is continuous over the abdominal side A, the crotch region C and the back side B. It is good also as a disposable diaper.
 また、本実施形態のおむつ1は、図10及び図11に示すように、背側部Bの接着剤7b及び腹側部Aの接着剤7aが、背側シート部材32及び腹側シート部材31と吸収性本体2とが重なっている領域にのみ塗布されているが、少なくともいずれか一方が、背側シート部材32あるいは腹側シート部材31の幅方向(Y方向)全域にわたって、言い換えれば、帯状シート6のY方向全域にわたって塗布されていてもよい。このように全域で接着剤7が塗布されていれば、着用時に帯状シート6が引っ掛からずにスムーズに着用することができる。 Further, as shown in FIGS. 10 and 11, the diaper 1 of the present embodiment includes a backside sheet member 32 and an abdominal sheet member 31, with the adhesive 7 b on the back side B and the adhesive 7 a on the abdomen A. Is applied only to the region where the absorbent main body 2 overlaps, but at least one of them covers the entire width direction (Y direction) of the back side sheet member 32 or the abdominal side sheet member 31, in other words, a belt-like shape. It may be applied over the entire Y direction of the sheet 6. Thus, if the adhesive 7 is apply | coated in the whole region, it can wear smoothly, without the strip | belt-shaped sheet | seat 6 being caught at the time of wear.
 図13には、これまでに説明してきたおむつと構成の異なるパンツ型使い捨ておむつ1が示されている。これまでに説明してきたおむつは、外装体3が、腹側シート部材31と背側シート部材32とに分割されていたが、同図に示すおむつ1では、外装体3が、腹側部Aから股下部Cを経て背側部Bまでにわたって配されている。同図に示すおむつ1における吸収性コア5は、図5に示す構造のものである。これに代えて、図6又は図7に示す構成の吸収性コア5を採用してもよい。本実施形態のおむつにおいても、これまで説明してきた実施形態のおむつと同様の有利な効果が奏される。 FIG. 13 shows a pants-type disposable diaper 1 having a configuration different from that of the diaper described so far. In the diaper described so far, the exterior body 3 is divided into the abdominal sheet member 31 and the back sheet member 32. However, in the diaper 1 shown in FIG. To the back side B through the crotch C. The absorbent core 5 in the diaper 1 shown in the figure has the structure shown in FIG. Instead of this, the absorbent core 5 having the configuration shown in FIG. 6 or 7 may be adopted. Also in the diaper of this embodiment, the same advantageous effect as the diaper of the embodiment described so far is exhibited.
 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、本発明は前記実施形態に制限されず、当業者の通常の知識の範囲内で適宜変更が可能である。例えば前記実施形態においては、背側シート部材32の下端部32Aから延出する後身頃延出域32Eが形成されていたが、この後身頃延出域32Eを形成しなくてもよい。 As described above, the present invention has been described based on its preferred embodiments, but the present invention is not limited to the above embodiments, and can be appropriately changed within the scope of ordinary knowledge of those skilled in the art. For example, in the embodiment described above, the rear body extension region 32E extending from the lower end portion 32A of the back seat member 32 is formed, but the rear body extension region 32E may not be formed.
 本発明のパンツ型吸収性物品は、成人用、子供用あるいは幼児用のパンツ型使い捨ておむつとして好適に用いられる。 The pant-type absorbent article of the present invention is suitably used as a pants-type disposable diaper for adults, children or infants.
 上述した実施形態に関し、本発明は更に以下のパンツ型吸収性物品を開示する。
<1>
 吸収性コアを含む縦長の吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体と固定されている外装体とを備え、着用者の腹側に配される腹側部、股間部に配される股下部及び背側に配される背側部を有し、該外装体における該腹側部に位置する外装体腹側領域及び該背側部に位置する外装体背側領域それぞれの本体長手方向に沿う両側縁部どうしが接合されて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吸収性物品であって、
 前記吸収性コアは、坪量の異なる第1領域及び第2領域を少なくとも有し、第1領域は第2領域よりも坪量が高く、
 第1領域は少なくとも股下部を含み、第2領域は少なくとも背側部を含み、
 第1領域は、吸収性コアの長手方向に延びる複数条の折曲誘導部からなる折曲誘導部群を有しており、
 折曲誘導部群は、吸収性コアの幅方向中央域に位置する中央折曲誘導部と、該中央折曲誘導部の両側部に位置する一対の側部折曲誘導部とからなり、
 折曲誘導部群は、腹側部に位置する外装体における下端部よりも股下部寄りに位置しており、背側部には該折曲誘導部群が非存在となっているパンツ型吸収性物品。
The present invention further discloses the following pant-type absorbent articles with respect to the above-described embodiments.
<1>
A vertically long absorbent main body including an absorbent core and an exterior body disposed on the non-skin facing surface side of the absorbent main body and fixed to the absorbent main body, and disposed on the stomach side of the wearer It has an abdominal part, a crotch part arranged in the crotch part, and a dorsal part arranged on the dorsal side, and is located in the exterior body ventral region and the back side part located in the abdominal side part of the exterior body A pants-type absorbent article in which both side edges along the longitudinal direction of the body of the exterior body back side region are joined to each other to form a waist opening and a pair of leg openings,
The absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
The first region includes at least a crotch portion; the second region includes at least a dorsal side;
The first region has a bending guide portion group composed of a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
The bending guide part group consists of a central bending guide part located in the center region in the width direction of the absorbent core, and a pair of side bending guide parts located on both sides of the central bending guide part,
The bending guide part group is located closer to the crotch than the lower end part of the exterior body located on the abdominal side part, and the pant type absorption in which the bending guide part group is absent on the back side part Sex goods.
<2>
 第1領域が少なくとも腹側部及び股下部を含む前記<1>に記載のパンツ型吸収性物品。
<3>
 第1領域の長さが、吸収性コアの全長の50%以上90%以下である前記<2>に記載のパンツ型吸収性物品。
<4>
 第1領域の長さは、吸収性コアの全長の50%以上であることが好ましく、60%以上であることが更に好ましく、70%以上であることが一層好ましく、また90%以下であることが好ましく、85%以下であることが更に好ましく、80%以下であることが一層好ましい前記<1>ないし<3>のいずれか1に記載のパンツ型吸収性物品。
<5>
 吸収性本体の幅方向に沿って見たとき、第1領域の坪量がいずれの部位でも同じになっている前記<1>ないし<4>のいずれか1に記載のパンツ型吸収性物品。
<6>
 吸収性本体の幅方向に沿って見たとき、第2領域の坪量がいずれの部位でも同じになっている前記<1>ないし<5>のいずれか1に記載のパンツ型吸収性物品。
<2>
The pants-type absorbent article according to <1>, wherein the first region includes at least a ventral part and a crotch part.
<3>
The underpants-type absorbent article according to <2>, wherein the length of the first region is 50% or more and 90% or less of the entire length of the absorbent core.
<4>
The length of the first region is preferably 50% or more of the entire length of the absorbent core, more preferably 60% or more, still more preferably 70% or more, and 90% or less. The underpants-type absorbent article according to any one of <1> to <3>, preferably 85% or less, and more preferably 80% or less.
<5>
The pants-type absorbent article according to any one of <1> to <4>, wherein the basis weight of the first region is the same at any part when viewed along the width direction of the absorbent main body.
<6>
The pants-type absorbent article according to any one of <1> to <5>, wherein the basis weight of the second region is the same in any part when viewed along the width direction of the absorbent main body.
<7>
 第1領域の坪量は、第2領域の坪量に対して120%以上であることが好ましく、140%以上であることが更に好ましく、また250%以下であることが好ましく、230%以下であることが更に好ましい前記<1>ないし<6>のいずれか1に記載のパンツ型吸収性物品。
<8>
 第2領域の坪量は、100g/m以上であることが好ましく、150g/m以上であることが更に好ましく、200g/m以上であることが一層好ましく、また600g/m以下であることが好ましく、550g/m以下であることが更に好ましく、500g/m以下であることが一層好ましい前記<1>ないし<7>のいずれか1に記載のパンツ型吸収性物品。
<9>
 第1領域41の坪量は、150g/m以上900g/m以下であることが好ましく、200g/m以上850g/m以下であることが更に好ましく、250g/m以上800g/m以下であることが一層好ましい前記<1>ないし<8>のいずれか1に記載のパンツ型吸収性物品。
<10>
 吸収性コアが親水性繊維を含み、
 第1領域を構成する親水性繊維の坪量は、第2領域を構成する親水性繊維の坪量よりも高くなっている前記<1>ないし<9>のいずれか1に記載のパンツ型吸収性物品。
<11>
 吸収性コアが吸水性ポリマーを含み、
 第1領域を構成する吸水性ポリマーの坪量は、第2領域を構成する吸水性ポリマーの坪量よりも高くなっている前記<1>ないし<10>のいずれか1に記載のパンツ型吸収性物品。
<7>
The basis weight of the first region is preferably 120% or more with respect to the basis weight of the second region, more preferably 140% or more, and preferably 250% or less, and 230% or less. The pants-type absorbent article according to any one of the above items <1> to <6>, further preferably.
<8>
The basis weight of the second region is preferably 100 g / m 2 or more, more preferably 150 g / m 2 or more, still more preferably 200 g / m 2 or more, and 600 g / m 2 or less. preferably there, further preferably 550 g / m 2 or less, to a more preferred wherein <1> not is 500 g / m 2 or less pant-type absorbent article according to any one of <7>.
<9>
The basis weight of the first region 41 is preferably 150 g / m 2 or more and 900 g / m 2 or less, more preferably 200 g / m 2 or more and 850 g / m 2 or less, and more preferably 250 g / m 2 or more and 800 g / m 2. The underpants-type absorbent article according to any one of <1> to <8>, more preferably 2 or less.
<10>
The absorbent core comprises hydrophilic fibers,
The pants-type absorption according to any one of <1> to <9>, wherein the basis weight of the hydrophilic fiber constituting the first region is higher than the basis weight of the hydrophilic fiber constituting the second region. Sex goods.
<11>
The absorbent core includes a water-absorbing polymer;
The pants-type absorption according to any one of <1> to <10>, wherein the basis weight of the water-absorbing polymer constituting the first region is higher than the basis weight of the water-absorbing polymer constituting the second region. Sex goods.
<12>
 第1領域よりも坪量が低く、かつ第2領域よりも坪量が高い第3領域を更に有し、
 第3領域は少なくとも腹側部を含む前記<1>ないし<11>のいずれか1に記載のパンツ型吸収性物品。
<13>
 第1領域の長さが、吸収性コアの全長の40%以上80%以下である前記<1>ないし<12>のいずれか1に記載のパンツ型吸収性物品。
<14>
 第1領域の長さは、吸収性コアの全長の40%以上であることが好ましく、45%以上であることが更に好ましく、50%以上であることが一層好ましく、また80%以下であることが好ましく、75%以下であることが更に好ましく、70%以下であることが一層好ましい前記<1>ないし<13>のいずれか1に記載のパンツ型吸収性物品。
<15>
 第1領域よりも坪量が低く、かつ第2領域よりも坪量が高い第3領域を更に有し、
 第3領域は少なくとも腹側部を含み、
 第3領域の坪量は、第2領域の坪量に対して105%以上であることが好ましく、110%以上であることが更に好ましく、また200%以下であることが好ましく、180%以下であることが更に好ましい前記<1>ないし<14>のいずれか1に記載のパンツ型吸収性物品。
<16>
 第1領域よりも坪量が低く、かつ第2領域よりも坪量が高い第3領域を更に有し、
 第3領域は少なくとも腹側部を含み、
 第3領域の坪量は、第1領域の坪量に対して50%以上であることが好ましく、60%以上であることが更に好ましく、また95%以下であることが好ましく、85%以下であることが更に好ましい前記<1>ないし<15>のいずれか1に記載のパンツ型吸収性物品。
<12>
A third region having a lower basis weight than the first region and a higher basis weight than the second region;
The pants-type absorbent article according to any one of <1> to <11>, wherein the third region includes at least a ventral part.
<13>
The pants-type absorbent article according to any one of <1> to <12>, wherein the length of the first region is 40% to 80% of the entire length of the absorbent core.
<14>
The length of the first region is preferably 40% or more of the entire length of the absorbent core, more preferably 45% or more, still more preferably 50% or more, and 80% or less. The underpants-type absorbent article according to any one of the above items <1> to <13>, preferably 75% or less, and more preferably 70% or less.
<15>
A third region having a lower basis weight than the first region and a higher basis weight than the second region;
The third region includes at least the ventral side;
The basis weight of the third region is preferably 105% or more with respect to the basis weight of the second region, more preferably 110% or more, and preferably 200% or less, and 180% or less. The pants-type absorbent article according to any one of the above items <1> to <14>, which is more preferably present.
<16>
A third region having a lower basis weight than the first region and a higher basis weight than the second region;
The third region includes at least the ventral side;
The basis weight of the third region is preferably 50% or more with respect to the basis weight of the first region, more preferably 60% or more, and preferably 95% or less, and 85% or less. The pants-type absorbent article according to any one of the above items <1> to <15>, more preferably.
<17>
 第1領域よりも坪量が低く、かつ第2領域よりも坪量が高い第3領域を更に有し、
 第3領域は少なくとも腹側部を含み、
 第3領域の坪量は、125g/m以上であることが好ましく、200g/m以上であることが更に好ましく、また800g/m以下であることが好ましく、750g/m以下であることが更に好ましい前記<1>ないし<16>のいずれか1に記載のパンツ型吸収性物品。
<18>
 折曲誘導部群が、着用者の大便排泄部の位置よりも背側部側において非存在となっている前記<1>ないし<17>のいずれか1に記載のパンツ型吸収性物品。
<19>
 折曲誘導部群を構成する各折曲誘導部の幅が同じになっている前記<1>ないし<18>のいずれか1に記載のパンツ型吸収性物品。
<20>
 各折曲誘導部の幅は、1mm以上であることが好ましく、3mm以上であることが更に好ましく、また20mm以下であることが好ましく、15mm以下であることが更に好ましい前記<1>ないし<19>のいずれか1に記載のパンツ型吸収性物品。
<21>
 折曲誘導部群を構成する各折曲誘導部の長さが同じになっている前記<1>ないし<20>のいずれか1に記載のパンツ型吸収性物品。
<17>
A third region having a lower basis weight than the first region and a higher basis weight than the second region;
The third region includes at least the ventral side;
The basis weight of the third region is preferably 125 g / m 2 or more, more preferably 200 g / m 2 or more, more preferably 800 g / m 2 or less, and 750 g / m 2 or less. More preferably, the underpants-type absorbent article according to any one of the above items <1> to <16>.
<18>
The underpants-type absorbent article according to any one of <1> to <17>, wherein the bending guide section group is absent on the back side of the stool excretion part of the wearer.
<19>
The underpants-type absorbent article according to any one of the above items <1> to <18>, wherein the widths of the bending guide portions constituting the bending guide portion group are the same.
<20>
The width of each bending guide part is preferably 1 mm or more, more preferably 3 mm or more, more preferably 20 mm or less, and even more preferably 15 mm or less <1> to <19 > The underpants type absorbent article of any one of>.
<21>
The underpants-type absorbent article according to any one of <1> to <20>, wherein the lengths of the bending guide portions constituting the bending guide portion group are the same.
<22>
 各折曲誘導部の長さは、50mm以上であることが好ましく、100mm以上であることが更に好ましく、また350mm以下であることが好ましく、300mm以下であることが更に好ましい前記<1>ないし<21>のいずれか1に記載のパンツ型吸収性物品。<23>
 各側部折曲誘導部は、中央折曲誘導部と平行に延びており、
 各側部折曲誘導部と中央折曲誘導部との距離が同じになっている前記<1>ないし<22>のいずれか1に記載のパンツ型吸収性物品。
<24>
 各折曲誘導部の腹側部側の端部の位置は同じであり、背側部側の端部の位置も同じになっている前記<1>ないし<23>のいずれか1に記載のパンツ型吸収性物品。
<25>
 吸収性コアが単層構造体から構成されている前記<1>ないし<24>のいずれか1に記載のパンツ型吸収性物品。
<26>
 吸収性コアの肌対向面側及び非肌対向面側に、該吸収性コアを被覆する液透過性シートが対向配置されており、
 対向配置された前記液透過性シートと、該液透過性シートの間に位置する、吸収性コアの構成材料が非存在となっている空間とで、中央折曲誘導部が画成されている前記<1>ないし<25>のいずれか1に記載のパンツ型吸収性物品。
<27>
 前記各折曲誘導部の端部のうち、背側シート部材側の端部Tと、吸収性コアにおける第2領域と第1領域との境界位置Tとの間の距離が、5mm以上50mm以下、特に10mm以上45mm以下である前記<1>ないし<26>のいずれか1に記載のパンツ型吸収性物品。
<22>
The length of each bending guide portion is preferably 50 mm or more, more preferably 100 mm or more, more preferably 350 mm or less, and even more preferably 300 mm or less <1> to <21> The underpants type absorbent article of any one of. <23>
Each side bending guide part extends in parallel with the central bending guide part,
The underpants-type absorbent article according to any one of <1> to <22>, wherein the distance between each side bending guide portion and the central bending guide portion is the same.
<24>
The position of the end part on the ventral part side of each bending guide part is the same, and the position of the end part on the dorsal part side is also the same. Any one of <1> to <23> Pants-type absorbent article.
<25>
The underpants-type absorbent article according to any one of <1> to <24>, wherein the absorbent core is composed of a single-layer structure.
<26>
The liquid-permeable sheet which covers this absorptive core is oppositely arranged on the skin opposing surface side and non-skin opposing surface side of an absorptive core,
A central folding guide portion is defined by the liquid-permeable sheet disposed oppositely and a space that is located between the liquid-permeable sheets and in which the constituent material of the absorbent core is absent. The underpants-type absorbent article according to any one of <1> to <25>.
<27>
Wherein one end of each bent guiding section, the end portion T 1 of the dorsal sheet member side, the distance between the boundary position T 2 of the second region and the first region of the absorbent core, or 5mm The pants-type absorbent article according to any one of <1> to <26>, which is 50 mm or less, particularly 10 mm or more and 45 mm or less.
<28>
 外装体が、腹側部に位置する腹側シート部材と、背側部に位置する背側シート部材とを含み、
 吸収性本体が両シート部材に架け渡して固定されている前記<1>ないし<27>のいずれか1に記載のパンツ型吸収性物品。
<29>
 背側シート部材の長手方向の下端部から、更に長手方向の下方側に延出した後身頃延出域が連設されている前記<28>に記載のパンツ型吸収性物品。
<30>
 後身頃延出域においては、外層シート材と内層シート材との間に延出域弾性部材が伸長状態で固定されていることによって、延出部ギャザーが形成されている前記<29>に記載のパンツ型吸収性物品。
<31>
 前期背側シート部材を構成する外層シート材における延出部が本体長手方向Xに沿う長さをLとし、延出部のうち第2領域と重なる領域の本体長手方向Xに沿う長さをLとしたとき、Lに対するLの割合である[L/L]×100の値が50%以上100%以下、とりわけ60%以上100%以下である、前記<28>ないし<30>のいずれか1に記載の吸収性物品。
<32>
 外装体が、腹側部から股下部を経て背側部までにわたって配されている前記<1>ないし<26>のいずれか1に記載のパンツ型吸収性物品。
<28>
The exterior body includes a ventral sheet member positioned on the ventral part and a dorsal sheet member positioned on the dorsal part,
The underpants-type absorbent article according to any one of <1> to <27>, wherein the absorbent main body is fixed across both sheet members.
<29>
The pants-type absorbent article according to the above <28>, wherein a rear body extending region extending further downward in the longitudinal direction is continuously provided from a lower end portion in the longitudinal direction of the back side sheet member.
<30>
In the rear body extension region, the extension region gathers are formed by extending the extension region elastic member between the outer layer sheet material and the inner layer sheet material. Pants-type absorbent article.
<31>
A length extending portion in the outer layer sheet constituting the year dorsal sheet member along the body longitudinal direction X and L 1, the length along the body longitudinal direction X of the region overlapping the second region of the extending portion when the L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of × 100 or more and 100% or 50% or less, especially 60% or more and 100% or less, to the <28> to <30> The absorbent article according to any one of 30>.
<32>
The underpants-type absorbent article according to any one of <1> to <26>, wherein the exterior body is disposed from the abdominal side to the back side through the crotch.
<33>
 吸収性コアを含む縦長の吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体と固定されている外装体とを備え、着用者の腹側に配される腹側部、股間部に配される股下部及び背側に配される背側部を有し、該外装体における該腹側部に位置する外装体腹側領域及び該背側部に位置する外装体背側領域それぞれの本体長手方向に沿う両側縁部どうしが接合されて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吸収性物品であって、
 前記吸収性コアは、坪量の異なる第1領域及び第2領域を少なくとも有し、第1領域は第2領域よりも坪量が高く、
 第1領域は少なくとも股下部を含み、第2領域は少なくとも腹側部及び背側部を含み、
 第1領域は、吸収性コアの長手方向に延びる複数条の折曲誘導部からなる折曲誘導部群を有しており、
 折曲誘導部群は、吸収性コアの幅方向中央域に位置する中央折曲誘導部と、該中央折曲誘導部の両側部に位置する一対の側部折曲誘導部とからなり、
 折曲誘導部群は、腹側部に位置する外装体における下端部よりも股下部寄りに位置しており、背側部には該折曲誘導部群が非存在となっているパンツ型吸収性物品。
<33>
A vertically long absorbent main body including an absorbent core and an exterior body disposed on the non-skin facing surface side of the absorbent main body and fixed to the absorbent main body, and disposed on the stomach side of the wearer It has an abdominal part, a crotch part arranged in the crotch part, and a dorsal part arranged on the dorsal side, and is located in the exterior body ventral region and the back side part located in the abdominal side part of the exterior body A pants-type absorbent article in which both side edges along the longitudinal direction of the body of the exterior body back side region are joined to each other to form a waist opening and a pair of leg openings,
The absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
The first region includes at least a crotch portion, the second region includes at least a ventral portion and a dorsal portion,
The first region has a bending guide portion group composed of a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
The bending guide part group consists of a central bending guide part located in the center region in the width direction of the absorbent core, and a pair of side bending guide parts located on both sides of the central bending guide part,
The bending guide part group is located closer to the crotch than the lower end part of the exterior body located on the abdominal side part, and the pant type absorption in which the bending guide part group is absent on the back side part Sex goods.
<34>
 第1領域の長さが、吸収性コアの全長の40%以上80%以下である前記<33>に記載のパンツ型吸収性物品。
<35>
 第1領域の長さは、吸収性コアの全長の40%以上であることが好ましく、45%以上であることが更に好ましく、50%以上であることが一層好ましく、また80%以下であることが好ましく、75%以下であることが更に好ましく、70%以下であることが一層好ましい前記<33>又は<34>に記載のパンツ型吸収性物品。
<36>
 腹側部の第2領域及び背側部の第2領域の長さは、それぞれ独立に、吸収性コアの全長の10%以上30%以下であることが好ましく、12%以上28%以下であることが更に好ましく、15%以上25%以下であることが一層好ましい前記<33>ないし<35>のいずれか1に記載のパンツ型吸収性物品。
<37>
 吸収性本体の幅方向に沿って見たとき、第1領域の坪量がいずれの部位でも同じになっている前記<33>ないし<36>のいずれか1に記載のパンツ型吸収性物品。
<38>
 吸収性本体の本体幅方向に沿って見たとき、第2領域の坪量がいずれの部位でも同じになっている前記<33>ないし<37>のいずれか1に記載のパンツ型吸収性物品。
<34>
The pants-type absorbent article according to <33>, wherein the length of the first region is 40% or more and 80% or less of the entire length of the absorbent core.
<35>
The length of the first region is preferably 40% or more of the entire length of the absorbent core, more preferably 45% or more, still more preferably 50% or more, and 80% or less. The pants-type absorbent article according to <33> or <34>, preferably 75% or less, and more preferably 70% or less.
<36>
The lengths of the second region on the ventral side and the second region on the dorsal side are each independently preferably 10% or more and 30% or less, and 12% or more and 28% or less of the total length of the absorbent core. More preferably, the pants-type absorbent article according to any one of the above <33> to <35>, more preferably 15% to 25%.
<37>
The pants-type absorbent article according to any one of <33> to <36>, wherein the basis weight of the first region is the same in any part when viewed along the width direction of the absorbent main body.
<38>
The pants-type absorbent article according to any one of the above <33> to <37>, wherein the basis weight of the second region is the same at any part when viewed along the body width direction of the absorbent body. .
<39>
 第1領域の坪量は、第2領域の坪量に対して110%以上であることが好ましく、120%以上であることが更に好ましく、また400%以下であることが好ましく、300%以下であることが更に好ましい前記<33>ないし<38>のいずれか1に記載のパンツ型吸収性物品。
<40>
 第2領域の坪量は、100g/m以上であることが好ましく、120g/m以上であることが更に好ましく、150g/m以上であることが一層好ましく、また600g/m以下であることが好ましく、550g/m以下であることが更に好ましく、500g/m以下であることが一層好ましい前記<33>ないし<39>のいずれか1に記載のパンツ型吸収性物品。
<41>
 第1領域の坪量は、150g/m以上900g/m以下であることが好ましく、180g/m以上850g/m以下であることが更に好ましく、200g/m以上800g/m以下であることが一層好ましい前記<32>ないし<40>のいずれか1に記載のパンツ型吸収性物品。
<42>
 吸収性コアが親水性繊維を含み、
 第1領域を構成する親水性繊維の坪量は、第2領域を構成する親水性繊維の坪量よりも高くなっている前記<33>ないし<41>のいずれか1に記載のパンツ型吸収性物品。
<43>
 吸収性コアが吸水性ポリマーを含み、
 第1領域を構成する吸水性ポリマーの坪量は、第2領域を構成する吸水性ポリマーの坪量よりも高くなっている前記<33>ないし<42>のいずれか1に記載のパンツ型吸収性物品。
<39>
The basis weight of the first region is preferably 110% or more with respect to the basis weight of the second region, more preferably 120% or more, and preferably 400% or less, and 300% or less. The pants-type absorbent article according to any one of <33> to <38>, which is more preferably present.
<40>
The basis weight of the second region is preferably 100 g / m 2 or more, more preferably 120 g / m 2 or more, still more preferably 150 g / m 2 or more, and 600 g / m 2 or less. preferably there, further preferably 550 g / m 2 or less, to a more preferable that the <33> to be at 500 g / m 2 or less pant-type absorbent article according to any one of <39>.
<41>
The basis weight of the first region is preferably 150 g / m 2 or more and 900 g / m 2 or less, more preferably 180 g / m 2 or more and 850 g / m 2 or less, and 200 g / m 2 or more and 800 g / m 2. The pants-type absorbent article according to any one of the above <32> to <40>, which is more preferably as follows.
<42>
The absorbent core comprises hydrophilic fibers,
The pants-type absorption according to any one of <33> to <41>, wherein the basis weight of the hydrophilic fibers constituting the first region is higher than the basis weight of the hydrophilic fibers constituting the second region. Sex goods.
<43>
The absorbent core includes a water-absorbing polymer;
The pants-type absorption according to any one of <33> to <42>, wherein the basis weight of the water-absorbing polymer constituting the first region is higher than the basis weight of the water-absorbing polymer constituting the second region. Sex goods.
<44>
 腹側部の第2領域の坪量と、背側部の第2領域の坪量とが実質的に同じになっている前記<33>ないし<43>のいずれか1に記載のパンツ型吸収性物品。
<45>
 吸収性コアが親水性繊維及び吸水性ポリマーを含み、
 腹側部の第2領域における親水性繊維の坪量と、背側部の第2領域における親水性繊維の坪量とが実質的に同じであり、
 腹側部の第2領域における吸水性ポリマーの坪量と、背側部の第2領域における吸水性ポリマーの坪量とが実質的に同じである前記<33>ないし<44>のいずれか1に記載のパンツ型吸収性物品。
<46>
 折曲誘導部群が、着用者の大便排泄部の位置よりも背側部側において非存在となっている前記<33>ないし<45>のいずれか1に記載のパンツ型吸収性物品。
<47>
 折曲誘導部群を構成する各折曲誘導部の幅が同じになっている前記<33>ないし<46>のいずれか1に記載のパンツ型吸収性物品。
<48>
 各折曲誘導部の幅は、1mm以上であることが好ましく、3mm以上であることが更に好ましく、また20mm以下であることが好ましく、15mm以下であることが更に好ましい前記<33>ないし<47>のいずれか1に記載のパンツ型吸収性物品。
<44>
The pants-type absorption according to any one of <33> to <43>, wherein the basis weight of the second region on the ventral side and the basis weight of the second region on the back side are substantially the same. Sex goods.
<45>
The absorbent core comprises hydrophilic fibers and a water-absorbing polymer;
The basis weight of the hydrophilic fibers in the second region of the ventral side and the basis weight of the hydrophilic fibers in the second region of the back side are substantially the same,
Any one of the above <33> to <44>, wherein the basis weight of the water absorbent polymer in the second region of the ventral side and the basis weight of the water absorbent polymer in the second region of the back side are substantially the same. The pants-type absorbent article described in 1.
<46>
The underpants-type absorbent article according to any one of the above <33> to <45>, wherein the bending guide part group is absent on the dorsal side from the position of the stool excretion part of the wearer.
<47>
The underpants-type absorbent article according to any one of <33> to <46>, wherein the widths of the bending guide portions constituting the bending guide portion group are the same.
<48>
The width of each bending guide portion is preferably 1 mm or more, more preferably 3 mm or more, more preferably 20 mm or less, and even more preferably 15 mm or less <33> to <47 > The underpants type absorbent article of any one of>.
<49>
 各側部折曲誘導部の長さが同じになっている前記<33>ないし<48>のいずれか1に記載のパンツ型吸収性物品。
<50>
 各側部折曲誘導部の長さは、50mm以上であることが好ましく、70mm以上であることが更に好ましく、また300mm以下であることが好ましく、250mm以下であることが更に好ましい前記<33>ないし<49>のいずれか1に記載のパンツ型吸収性物品。
<51>
 各側部折曲誘導部の腹側部側の端部の位置が同じであり、背側部側の端部の位置も同じになっている前記<33>ないし<50>のいずれか1に記載のパンツ型吸収性物品。
<52>
 各側部折曲誘導部と中央折曲誘導部との距離が同じになっている前記<33>ないし<51>のいずれか1に記載のパンツ型吸収性物品。
<53>
 中央折曲誘導部の長さが各側部折曲誘導部の長さよりも短くなっている前記<33>ないし<52>のいずれか1に記載のパンツ型吸収性物品。
<49>
The underpants-type absorbent article according to any one of the above <33> to <48>, wherein the lengths of the side bending guide portions are the same.
<50>
The length of each side bending guide part is preferably 50 mm or more, more preferably 70 mm or more, more preferably 300 mm or less, and further preferably 250 mm or less <33> Thru | or the underpants type absorbent article of any one of <49>.
<51>
Any one of the above <33> to <50>, wherein the position of the end portion on the ventral side of each side bending guide portion is the same, and the position of the end portion on the back side is also the same The underpants type absorbent article as described.
<52>
The underpants-type absorbent article according to any one of the above <33> to <51>, wherein the distance between each side bending guide portion and the central bending guide portion is the same.
<53>
The underpants-type absorbent article according to any one of the above <33> to <52>, wherein the length of the central bending guiding portion is shorter than the length of each side bending guiding portion.
<54>
 中央折曲誘導部の長さは、側部折曲誘導部の長さの20%以上であることが好ましく、30%以上であることが更に好ましく、また80%以下であることが好ましく、70%以下であることが更に好ましい前記<33>ないし<54>のいずれか1に記載のパンツ型吸収性物品。
<55>
 中央折曲誘導部の両端部のうちの一方の端部の位置を、側部折曲誘導部の両端部のうちの一方の端部の位置と一致させた前記<33>ないし<54>のいずれか1に記載のパンツ型吸収性物品。
<56>
 腹側部寄りの位置において、中央折曲誘導部の両端部のうちの腹側部寄りの端部の位置を、側部折曲誘導部の両端部のうちの腹側部寄りの端部の位置と一致させた前記<33>ないし<55>のいずれか1に記載のパンツ型吸収性物品。
<57>
 吸収性コアが単層構造体から構成されている前記<33>ないし<56>のいずれか1に記載のパンツ型吸収性物品。
<58>
 吸収性コアの肌対向面側及び非肌対向面側に、該吸収性コアを被覆する液透過性シートが対向配置されており、
 対向配置された前記液透過性シートと、該液透過性シートの間に位置する、吸収性コアの構成材料が非存在となっている空間とで、中央折曲誘導部が画成されている前記<33>ないし<57>のいずれか1に記載のパンツ型吸収性物品。
<59>
 前記各折曲誘導部の端部のうち、背側シート部材側の端部Tと、吸収性コアにおける第2領域と第1領域との境界位置Tとの間の距離が、5mm以上50mm以下、特に10mm以上45mm以下である前記<33>ないし<58>のいずれか1に記載のパンツ型吸収性物品。
<54>
The length of the central bending guiding portion is preferably 20% or more of the length of the side bending guiding portion, more preferably 30% or more, and preferably 80% or less, 70 % Of the pants-type absorbent article according to any one of the above <33> to <54>.
<55>
<33> to <54>, wherein the position of one end portion of both end portions of the central bending guide portion is matched with the position of one end portion of both end portions of the side bending guide portion. The underpants type absorbent article according to any one of the above.
<56>
In the position closer to the ventral side, the position of the end closer to the ventral side of both ends of the central bending guide part is the position of the end closer to the ventral side of both ends of the side bending guide part. The pants-type absorbent article according to any one of <33> to <55>, which is matched with the position.
<57>
The pants-type absorbent article according to any one of <33> to <56>, wherein the absorbent core is composed of a single-layer structure.
<58>
The liquid-permeable sheet which covers this absorptive core is oppositely arranged on the skin opposing surface side and non-skin opposing surface side of an absorptive core,
A central folding guide portion is defined by the liquid-permeable sheet disposed oppositely and a space that is located between the liquid-permeable sheets and in which the constituent material of the absorbent core is absent. The underpants-type absorbent article according to any one of <33> to <57>.
<59>
Wherein one end of each bent guiding section, the end portion T 1 of the dorsal sheet member side, the distance between the boundary position T 2 of the second region and the first region of the absorbent core, or 5mm The pants-type absorbent article according to any one of <33> to <58>, which is 50 mm or less, particularly 10 mm or more and 45 mm or less.
<60>
 外装体が、腹側部に位置する腹側シート部材と、背側部に位置する背側シート部材とを含み、
 吸収性本体が両シート部材に架け渡して固定されている前記<33>ないし<59>のいずれか1に記載のパンツ型吸収性物品。
<61>
 背側シート部材の長手方向の下端部から、更に長手方向の下方側に延出した後身頃延出域が連設されている前記<60>に記載のパンツ型吸収性物品。
<62>
 前記背側シート部材を構成する外層シート材における延出部が本体長手方向Xに沿う長さをLとし、延出部のうち第2領域と重なる領域の本体長手方向Xに沿う長さをLとしたとき、Lに対するLの割合である[L/L]×100の値が50%以上100%以下、とりわけ60%以上100%以下である、前記<60>又は<61>に記載の吸収性物品。
<63>
 外装体が、腹側部から股下部を経て背側部までにわたって配されている前記<33>ないし<59>のいずれか1に記載のパンツ型吸収性物品。
<60>
The exterior body includes a ventral sheet member positioned on the ventral part and a dorsal sheet member positioned on the dorsal part,
The underpants-type absorbent article according to any one of <33> to <59>, wherein the absorbent main body is fixed across the two sheet members.
<61>
The underpants-type absorbent article according to <60>, wherein a rear body extending region extending further downward in the longitudinal direction is continuously provided from a lower end portion in the longitudinal direction of the back side sheet member.
<62>
A length extending portion in the outer layer sheet constituting the back-side sheet member along the body longitudinal direction X and L 1, the length along the body longitudinal direction X of the region overlapping the second region of the extending portion when the L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of × 100 or more and 100% or 50% or less, especially 60% or more and 100% or less, the <60> or <61>.
<63>
The underpants-type absorbent article according to any one of the above <33> to <59>, wherein the exterior body is disposed from the abdominal side to the back side through the crotch.
<64>
 前記吸収性本体の長手方向の両端部それぞれが、前記外装体と、該外装体とは別体の幅方向に延びる帯状シートとで被覆され、接着剤を介して該外装体と該帯状シートとの間に固定されており、
 背側部の前記接着剤は、その塗布量が、腹側部の前記接着剤の塗布量に比べて少ない、前記<1>ないし<63>のいずれか1に記載のパンツ型吸収性物品。
<64>
Both ends in the longitudinal direction of the absorbent main body are covered with the exterior body and a belt-like sheet extending in the width direction separate from the exterior body, and the exterior body and the belt-like sheet are interposed via an adhesive. Fixed between
The pants-type absorbent article according to any one of <1> to <63>, wherein the application amount of the adhesive on the back side portion is smaller than the application amount of the adhesive on the abdominal side portion.
<65>
 各前記接着剤は、前記吸収性本体の長手方向の端部端縁を跨いで塗布されている前記<64>に記載のパンツ型吸収性物品。
<66>
 背側部の前記接着剤は、その塗布面積が、腹側部の前記接着剤の塗布面積に比べて低い前記<64>又は<65>に記載のパンツ型吸収性物品。
<67>
 背側部の前記接着剤の塗布面積は、腹側部の前記接着剤の塗布面積の好ましくは2/25以上、更に好ましくは2/15以上であり、腹側部の前記接着剤の塗布面積の好ましくは4/5以下、更に好ましくは2/3以下である、前記<64>ないし<66>のいずれか1に記載のパンツ型吸収性物品。
<68>
 背側部の前記接着剤の塗布面積は、1cm以上60cm以下であることが好ましく、3cm以上40cm以下であることが更に好ましく、また、腹側部の前記接着剤の塗布面積は、5cm以上80cm以下であることが好ましく、8cm以上60cm以下であることが更に好ましい、前記<64>ないし<67>のいずれか1に記載のパンツ型吸収性物品。
<69>
 背側部の前記接着剤の塗布量は、腹側部の前記接着剤の塗布量の2/25以上4/5以下であり、背側部の前記接着剤の塗布量が2g/m以上10g/m以下であって、腹側部の前記接着剤の塗布量が5g/m以上25g/m以下である前記<64>ないし<68>のいずれか1に記載のパンツ型吸収性物品。
<70>
 背側部の前記接着剤の塗布量は、腹側部の前記接着剤の塗布量の好ましくは2/25以上、更に好ましくは2/15以上であり、腹側部の前記接着剤の塗布量の好ましくは4/5以下、更に好ましくは2/3以下である、前記<64>ないし<69>のいずれか1に記載のパンツ型吸収性物品。
<71>
 背側部の前記接着剤の塗布量は、2g/m以上10g/m以下であることが好ましく、2g/m以上5g/m以下であることが更に好ましく、また、腹側部の前記接着剤の塗布量は、5g/m以上25g/m以下であることが好ましく、5g/m以上15g/m以下であることが更に好ましい前記<64>ないし<70>のいずれか1に記載のパンツ型吸収性物品。
<72>
 背側部側の前記吸収体を構成する吸収性コアは、その坪量が、腹側部側の前記吸収体を構成する吸収性コアの坪量に比べて低い前記<64>ないし<71>のいずれか1に記載のパンツ型吸収性物品。
<73>
 前記吸収体を構成する吸収性コアは、背側部側の坪量が、腹側部側の坪量の10%以上75%以下であることが好ましく、腹側部側の坪量の20%以上65%以下であることが更に好ましい前記<64>ないし<72>のいずれか1に記載のパンツ型吸収性物品。
<74>
 背側部側の前記吸収体を構成する吸収性コアの坪量は、50g/m以上500g/m以下であることが好ましく、75g/m以上400g/m以下であることが更に好ましく、また、腹側部側の前記吸収体を構成する吸収性コアの坪量は、150g/m以上900g/m以下であることが好ましく、200g/m以上800g/m以下であることが更に好ましい前記<64>ないし<73>のいずれか1に記載のパンツ型吸収性物品。
<65>
Each said adhesive agent is an underpants type absorbent article as described in said <64> currently straddled across the edge part edge of the longitudinal direction of the said absorptive main body.
<66>
The pants-type absorbent article according to <64> or <65>, in which the adhesive on the back side portion has a lower application area than the application area of the adhesive on the abdominal side portion.
<67>
The application area of the adhesive on the dorsal side is preferably 2/25 or more, more preferably 2/15 or more of the application area of the adhesive on the ventral part, and the application area of the adhesive on the ventral part. The pants-type absorbent article according to any one of the above <64> to <66>, which is preferably 4/5 or less, more preferably 2/3 or less.
<68>
The application area of the adhesive on the back side is preferably 1 cm 2 or more and 60 cm 2 or less, more preferably 3 cm 2 or more and 40 cm 2 or less, and the application area of the adhesive on the ventral side is , preferably at 5 cm 2 or more 80 cm 2 or less, still more preferably 8 cm 2 or more 60cm 2 or less, the <64> to pant-type absorbent article according to any one of <67>.
<69>
The application amount of the adhesive on the back side is 2/25 or more and 4/5 or less of the application amount of the adhesive on the abdominal side, and the application amount of the adhesive on the back side is 2 g / m 2 or more. a is 10 g / m 2 or less, pant-type absorbent according to any one of from the coating amount of the adhesive of the ventral said <64> not be 5 g / m 2 or more 25 g / m 2 or less <68> Sex goods.
<70>
The application amount of the adhesive on the dorsal side is preferably 2/25 or more, more preferably 2/15 or more of the application amount of the adhesive on the abdominal side, and the application amount of the adhesive on the abdominal side. The pants-type absorbent article according to any one of the above items <64> to <69>, preferably 4/5 or less, more preferably 2/3 or less.
<71>
The application amount of the adhesive on the back side is preferably 2 g / m 2 or more and 10 g / m 2 or less, more preferably 2 g / m 2 or more and 5 g / m 2 or less, and the ventral part. The application amount of the adhesive is preferably 5 g / m 2 or more and 25 g / m 2 or less, more preferably 5 g / m 2 or more and 15 g / m 2 or less. The underpants type absorbent article according to any one of the above.
<72>
<64> thru | or <71> that the absorptive core which comprises the said absorber on the back side part side has a low basic weight compared with the basic weight of the absorptive core which comprises the said absorber on the ventral part side. The underpants type absorbent article according to any one of the above.
<73>
As for the absorptive core which comprises the said absorber, it is preferable that the basic weight of the back side part side is 10% or more and 75% or less of the basic weight of the ventral part side, and 20% of the basic weight of the ventral part side. The pants-type absorbent article according to any one of <64> to <72>, more preferably 65% or less.
<74>
The basis weight of the absorbent core constituting the absorber on the back side is preferably 50 g / m 2 or more and 500 g / m 2 or less, and more preferably 75 g / m 2 or more and 400 g / m 2 or less. Preferably, the basis weight of the absorbent core constituting the absorber on the ventral side is preferably 150 g / m 2 or more and 900 g / m 2 or less, and 200 g / m 2 or more and 800 g / m 2 or less. The pants-type absorbent article according to any one of <64> to <73>, which is more preferably present.
<75>
 背側部側の前記吸収体を構成する吸収性ポリマーの含有量が、腹側部側の前記吸収体を構成する吸収性ポリマーの含有量に比べて少ない前記<64>ないし<74>のいずれか1に記載のパンツ型吸収性物品。
<76>
 背側部側の前記吸収体を構成する吸収性ポリマーの含有量は、腹側部側の前記吸収体を構成する吸収性ポリマーの含有量の10%以上75%以下であることが好ましく、腹側部側の前記吸収体を構成する吸収性ポリマーの含有量の20%以上65%以下であることが更に好ましい前記<64>ないし<75>のいずれか1に記載のパンツ型吸収性物品。
<77>
 背側部側の前記吸収体を構成する吸収性ポリマーの含有量は、50g/m以上250g/m以下であることが好ましく、75g/m以上200g/m以下であることが更に好ましく、また、腹側部側の前記吸収体を構成する吸収性ポリマーの含有量は、100g/m以上500g/m以下であることが好ましく、150g/m以上400g/m以下であることが更に好ましい前記<64>ないし<76>のいずれか1に記載のパンツ型吸収性物品。
<78>
 前記吸収体を構成する吸収性コアは、背側部側の厚みが腹側部側の厚みよりも小さくなっており、
 前記吸収体を構成する吸収性コアは、背側部側の厚みが、腹側部側の厚みの10%以上75%以下であることが好ましく、腹側部側の厚みの15%以上50%以下であることが更に好ましい前記<64>ないし<77>のいずれか1に記載のパンツ型吸収性物品。
<79>
 背側部側の前記吸収体を構成する吸収性コアの厚みは、0.5mm以上6mm以下であることが好ましく、1mm以上5mm以下であることが更に好ましいく、腹側部側の前記吸収体を構成する吸収性コアの厚みは、1mm以上9mm以下であることが好ましく、2mm以上7.5mm以下であることが更に好ましい前記<64>ないし<78>のいずれか1に記載のパンツ型吸収性物品。
<80>
 前記吸収体を構成する吸収性コアは、背側部側の密度が、腹側部側の密度よりも小さくなっており、
 前記吸収体を構成する吸収性コアは、背側部側の密度が、腹側部側の密度の10%以上75%以下であることが好ましく、腹側部側の密度の20%以上65%以下であることが更に好ましい前記<64>ないし<79>のいずれか1に記載のパンツ型吸収性物品。
<81>
 背側部側の前記吸収体を構成する吸収性コアの密度は、0.01g/cm以上0.75g/cm以下であることが好ましく、0.03g/cm以上0.55g/cm以下であることが更に好ましく、また、腹側部側の前記吸収体を構成する吸収性コアの密度は、0.1g/cm以上1g/cm以下であることが好ましく、0.15g/cm以上0.8g/cm以下であることが更に好ましい前記<64>ないし<80>のいずれか1に記載のパンツ型吸収性物品。
<82>
 前記帯状シートの幅(X方向の長さ)は、前記外装体の幅方向(X方向)の長さに対して、10%以上60%以下であることが好ましく、15%以上50%以下であることが更に好ましい前記<64>ないし<81>のいずれか1に記載のパンツ型吸収性物品。
<83>
 背側部の前記接着剤の螺旋を描く各塗布線の太さが、腹側部の前記接着剤の螺旋を描く塗布線の太さよりも細くなっている前記<64>ないし<82>のいずれか1に記載のパンツ型吸収性物品。
<84>
 背側部の前記接着剤の螺旋を描く塗布線の本数が、腹側部の前記接着剤の螺旋を描く塗布線の本数よりも少なくなっている前記<64>ないし<83>のいずれか1に記載のパンツ型吸収性物品。
<85>
 縦長の吸収体を含む腹側部、背側部及び股下部に区分された吸収性本体と、該吸収性本体の非肌対向面側に固定された外装体とを備えたパンツ型吸収性物品であって、
 前記吸収性本体の長手方向の両端部それぞれが、前記外装体と、該外装体とは別体の横方向に延びる帯状シートとで被覆され、接着剤を介して該外装体と該帯状シートとの間に固定されており、
 背側部の前記接着剤は、その塗布量が、腹側部の前記接着剤の塗布量に比べて少ないパンツ型吸収性物品。
<75>
Any of <64> to <74>, wherein the content of the absorbent polymer constituting the absorber on the dorsal side is smaller than the content of the absorbent polymer constituting the absorber on the ventral side. A pants-type absorbent article according to claim 1.
<76>
The content of the absorbent polymer constituting the absorber on the dorsal side is preferably 10% or more and 75% or less of the content of the absorbent polymer constituting the absorber on the ventral side. The pants-type absorbent article according to any one of <64> to <75>, wherein the content of the absorbent polymer constituting the absorbent on the side portion side is more preferably 20% to 65%.
<77>
The content of the absorbent polymer constituting the absorber on the back side is preferably 50 g / m 2 or more and 250 g / m 2 or less, and more preferably 75 g / m 2 or more and 200 g / m 2 or less. Preferably, the content of the absorbent polymer constituting the absorbent on the ventral side is preferably 100 g / m 2 or more and 500 g / m 2 or less, and 150 g / m 2 or more and 400 g / m 2 or less. The pants-type absorbent article according to any one of the above items <64> to <76>, more preferably.
<78>
The absorptive core constituting the absorbent body has a thickness on the dorsal side smaller than that on the ventral side,
The absorbent core constituting the absorbent body preferably has a back side portion thickness of 10% to 75% of the ventral side thickness, and 15% to 50% of the ventral side thickness. The pants-type absorbent article according to any one of the above items <64> to <77>, which is more preferably as follows.
<79>
The thickness of the absorbent core constituting the absorber on the back side portion side is preferably 0.5 mm or more and 6 mm or less, more preferably 1 mm or more and 5 mm or less, and the absorber on the ventral side portion side. Preferably, the thickness of the absorbent core constituting the pants-type absorption according to any one of the above <64> to <78> is preferably 1 mm to 9 mm, and more preferably 2 mm to 7.5 mm. Sex goods.
<80>
The absorbent core that constitutes the absorbent body has a density on the back side that is smaller than the density on the ventral side,
The absorbent core constituting the absorbent body preferably has a back side density of 10% to 75% of the density on the ventral side, and 20% to 65% of the density on the ventral side. The pants-type absorbent article according to any one of the above items <64> to <79>, which is more preferably as follows.
<81>
The density of the absorbent core constituting the absorber on the back side is preferably 0.01 g / cm 3 or more and 0.75 g / cm 3 or less, and 0.03 g / cm 3 or more and 0.55 g / cm. 3 or less, and the density of the absorbent core constituting the absorbent on the ventral side is preferably 0.1 g / cm 3 or more and 1 g / cm 3 or less, 0.15 g The pants-type absorbent article according to any one of <64> to <80>, more preferably / cm 3 or more and 0.8 g / cm 3 or less.
<82>
The width of the belt-like sheet (the length in the X direction) is preferably 10% or more and 60% or less, and preferably 15% or more and 50% or less with respect to the length in the width direction (X direction) of the exterior body. The pants-type absorbent article according to any one of the above items <64> to <81>, more preferably.
<83>
Any of the above <64> to <82>, wherein the thickness of each application line that draws the spiral of the adhesive on the back side is thinner than the thickness of the application line that draws the spiral of the adhesive on the ventral side A pants-type absorbent article according to claim 1.
<84>
Any one of the above items <64> to <83>, wherein the number of application lines that draw the spiral of the adhesive on the back side is smaller than the number of application lines that draw the spiral of the adhesive on the ventral side The pants-type absorbent article described in 1.
<85>
A pants-type absorbent article comprising an absorbent main body that is divided into an abdominal part, a back side part, and a crotch part including a vertically long absorbent body, and an exterior body that is fixed to the non-skin facing surface side of the absorbent main body Because
Both ends in the longitudinal direction of the absorbent main body are covered with the exterior body and a belt-like sheet extending in the lateral direction separately from the exterior body, and the exterior body and the belt-like sheet are interposed via an adhesive. Fixed between
The adhesive on the back side is an underpants type absorbent article in which the application amount is smaller than the application amount of the adhesive on the abdominal side.
 以下、実施例により本発明を更に詳細に説明する。しかしながら本発明の範囲は、かかる実施例に制限されない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples.
  〔実施例1〕
 本実施例では、図1ないし図4に示すパンツ型使い捨ておむつに用いられる吸収性コア5を、公知の積繊ドラムを用いて製造した。吸収性コア5は、図5に示す構成の単層構造体からなるものとした。吸収性コア5の長さは390mm、幅は135mmとした。折曲誘導部は三条形成し、いずれも長さ200mm、幅10mmとした。腹側部Aの端部から、折曲誘導部の端部までの距離は75mmとした。中央折曲誘導部と側部折曲誘導部のとのピッチは26mmとした。腹側部A及び股下部Cを含む第1領域41の長さは290mmとし、背側部Bを含む第2領域の長さは100mmとした。第1領域41におけるパルプ繊維の坪量は192g/mで、吸水性ポリマーの坪量は250g/mであった。第2領域42におけるパルプ繊維の坪量は108g/mで、吸水性ポリマーの坪量は132g/mであった。この構成の吸収性コア5をティッシュペーパーからなる液透過性シート(坪量16g/m)で包み、吸収体を得た。
[Example 1]
In the present Example, the absorptive core 5 used for the pants-type disposable diaper shown in FIGS. 1 to 4 was manufactured using a known fiber stacking drum. The absorptive core 5 was made of a single layer structure having the configuration shown in FIG. The length of the absorbent core 5 was 390 mm and the width was 135 mm. The bending guide part was formed in three strips, each having a length of 200 mm and a width of 10 mm. The distance from the end part of the ventral part A to the end part of the bending guide part was 75 mm. The pitch between the central bending guiding portion and the side bending guiding portion was 26 mm. The length of the first region 41 including the ventral side portion A and the crotch portion C was 290 mm, and the length of the second region including the back side portion B was 100 mm. The basis weight of the pulp fibers in the first region 41 at 192 g / m 2, the basis weight of the water-absorbing polymer was 250 g / m 2. The basis weight of the pulp fiber in the second region 42 was 108 g / m 2 , and the basis weight of the water-absorbing polymer was 132 g / m 2 . The absorbent core 5 having this configuration was wrapped with a liquid permeable sheet (basis weight 16 g / m 2 ) made of tissue paper to obtain an absorbent body.
  〔実施例2〕
 本実施例においては、2層構造の部位を有する吸収性コア5を、公知の積繊ドラムを用いて製造した。この吸収性コア5においては、第1領域41が2層構造となっており、第2領域42が単層構造となっていた。具体的には、第1領域41及び第2領域42を含む下層の上に、第1領域41のみを含む上層を積層して本実施例の吸収性コア5となした。坪量や寸法は実施例1と同様とした。この吸収性コア5を、実施例1と同様のティッシュペーパーで包んで吸収体を得た。
[Example 2]
In the present example, the absorbent core 5 having a two-layer structure was manufactured using a known stacking drum. In the absorbent core 5, the first region 41 has a two-layer structure, and the second region 42 has a single-layer structure. Specifically, on the lower layer including the first region 41 and the second region 42, the upper layer including only the first region 41 was laminated to form the absorbent core 5 of this example. The basis weight and dimensions were the same as in Example 1. The absorbent core 5 was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  〔実施例3〕
 本実施例では、図1ないし図4に示すパンツ型使い捨ておむつに用いられる吸収性コア5を、公知の積繊ドラムを用いて製造した。吸収性コア5は、図6に示す構成の単層構造体からなるものとした。吸収性コア5の長さは390mm、幅は135mmとした。折曲誘導部は三条形成し、いずれも長さ200mm、幅10mmとした。腹側部Aの端部から、折曲誘導部の端部までの距離は75mmとした。中央折曲誘導部と側部折曲誘導部のとのピッチは26mmとした。股下部Cを含む第1領域41の長さは240mmとし、背側部Bを含む第2領域の長さは100mmとし、腹側部Aを含む第3領域の長さは50mmとした。第1領域41におけるパルプ繊維の坪量は192g/mで、吸水性ポリマーの坪量は250g/mであった。第2領域42におけるパルプ繊維の坪量は108g/mで、吸水性ポリマーの坪量は132g/mであった。第3領域43におけるパルプ繊維の坪量は140g/mで、吸水性ポリマーの坪量は170g/mであった。この構成の吸収性コア5をティッシュペーパーからなる液透過性シート(坪量16g/m)で包み、吸収体を得た。
Example 3
In the present Example, the absorptive core 5 used for the pants-type disposable diaper shown in FIGS. 1 to 4 was manufactured using a known fiber stacking drum. The absorptive core 5 was made of a single layer structure having the configuration shown in FIG. The length of the absorbent core 5 was 390 mm and the width was 135 mm. The bending guide part was formed in three strips, each having a length of 200 mm and a width of 10 mm. The distance from the end part of the ventral part A to the end part of the bending guide part was 75 mm. The pitch between the central bending guiding portion and the side bending guiding portion was 26 mm. The length of the first region 41 including the crotch portion C was 240 mm, the length of the second region including the back side portion B was 100 mm, and the length of the third region including the ventral side portion A was 50 mm. The basis weight of the pulp fibers in the first region 41 at 192 g / m 2, the basis weight of the water-absorbing polymer was 250 g / m 2. The basis weight of the pulp fiber in the second region 42 was 108 g / m 2 , and the basis weight of the water-absorbing polymer was 132 g / m 2 . The basis weight of the pulp fiber in the third region 43 was 140 g / m 2 , and the basis weight of the water absorbent polymer was 170 g / m 2 . The absorbent core 5 having this configuration was wrapped with a liquid permeable sheet (basis weight 16 g / m 2 ) made of tissue paper to obtain an absorbent body.
  〔実施例4〕
 本実施例においては、3層構造の部位を有する吸収性コア5を、公知の積繊ドラムを用いて製造した。この吸収性コア5においては、第1領域41が3層構造となっており、第3領域42が2層構造となっており、第2領域42が単層構造となっていた。具体的には、第1領域41、第2領域42及び第3領域43を含む下層の上に、第1領域41及び第3領域43のみを含む中層を積層し、中層の上に第1領域41のみを含む上層を積層して本実施例の吸収性コア5となした。坪量や寸法は実施例1と同様とした。この吸収性コア5を、実施例1と同様のティッシュペーパーで包んで吸収体を得た。
Example 4
In this example, the absorbent core 5 having a three-layer structure was manufactured using a known stacking drum. In the absorbent core 5, the first region 41 has a three-layer structure, the third region 42 has a two-layer structure, and the second region 42 has a single-layer structure. Specifically, an intermediate layer including only the first region 41 and the third region 43 is stacked on the lower layer including the first region 41, the second region 42, and the third region 43, and the first region is formed on the intermediate layer. The upper layer containing only 41 was laminated to form the absorbent core 5 of this example. The basis weight and dimensions were the same as in Example 1. The absorbent core 5 was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  〔比較例1〕
 本比較例においては、実施例1と同様の折曲誘導部群を有するが、単一坪量である吸収性コアを製造した。吸収性コアにおけるパルプ繊維の坪量は168g/mで、吸水性ポリマーの坪量は216g/mであった。この吸収性コアを、実施例1と同様のティッシュペーパーで包んで吸収体を得た。
[Comparative Example 1]
In this comparative example, an absorbent core having a single basis weight was produced, although it had the same bending guiding part group as in Example 1. The basis weight of the pulp fiber in the absorbent core was 168 g / m 2 , and the basis weight of the water-absorbing polymer was 216 g / m 2 . The absorbent core was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  〔比較例2〕
 本比較例においては、比較例1において吸収性コアに折曲誘導部群を形成しなかった例である。したがってこの吸収性コアは単純なフラット構造のものである。この吸収性コアを、実施例1と同様のティッシュペーパーで包んで吸収体を得た。
[Comparative Example 2]
This comparative example is an example in which the bending induction portion group is not formed in the absorbent core in the comparative example 1. Therefore, the absorbent core has a simple flat structure. The absorbent core was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  〔比較例3〕
 本比較例は、実施例3において吸収性コアに折曲誘導部群を形成しなかった例である。この吸収性コアを、実施例1と同様のティッシュペーパーで包んで吸収体を得た。
[Comparative Example 3]
This comparative example is an example in which the bending guide part group was not formed in the absorbent core in Example 3. The absorbent core was wrapped with the same tissue paper as in Example 1 to obtain an absorbent body.
  〔評価〕
 実施例及び比較例で得られた吸収体を用いて図1に示す形態のパンツ型使い捨ておむつを製造した。このおむつについて、液漏れのしにくさ及び股下部の装着圧を以下の方法で測定した。それらの結果を以下の表1に示す。なお、このおむつの表面シートとしては、坪量25g/mのエアスルー不織布を用い、裏面シートとしては、坪量18g/mのポリエチレンフィルムを用いた。
[Evaluation]
The underpants type disposable diaper of the form shown in FIG. 1 was manufactured using the absorber obtained by the Example and the comparative example. About this diaper, the difficulty of liquid leakage and the mounting pressure at the crotch were measured by the following methods. The results are shown in Table 1 below. Note that an air-through nonwoven fabric having a basis weight of 25 g / m 2 was used as the top sheet of the diaper, and a polyethylene film having a basis weight of 18 g / m 2 was used as the back sheet.
  〔液漏れのしにくさ〕
 図1に示すおむつを、そのサイドシール部Sの位置で切り裂いて平面状に展開した。角度30°の斜面台に、腹側が下方向になるように表面シートを上側に向けた展開状態のおむつを置いた。人工尿を5g/秒で5分おきに注入し、おむつが液を保持できなくなるまでの回数を測定した。注入位置は、腹側の吸収体の端部から股下側に向けて130mm内側の位置とした。 
[Difficult to leak]
The diaper shown in FIG. 1 was cut at the position of the side seal portion S and developed into a flat shape. A diaper in an unfolded state with the topsheet facing upward was placed on a sloped base at an angle of 30 ° so that the ventral side was downward. Artificial urine was injected at 5 g / second every 5 minutes, and the number of times until the diaper could not hold the liquid was measured. The injection position was a position 130 mm inside from the end of the abdominal absorber toward the crotch side.
  〔股下部の装着圧〕
 歩行モデルにおむつを装着し、1分間立ち座り動作を行ったのち、人工尿を5g/秒で合計160g注入した。次いで歩行動作を20秒行った後の踏み出した足(右足)の大腿部の最内側を基準に前40mm、前20mm、後20mm、後40mmの圧を測定し平均した。装着圧の測定装置については後述する。
[Inseam pressure]
A diaper was attached to the walking model, and after standing and sitting for 1 minute, a total of 160 g of artificial urine was injected at 5 g / second. Next, the pressure of 40 mm front, 20 mm front, 20 mm rear, and 40 mm rear was measured and averaged based on the innermost side of the thigh of the stepped foot (right foot) after walking for 20 seconds. A mounting pressure measuring device will be described later.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
 表1に示す結果から明らかなとおり、各実施例で得られた吸収体は、液漏れが生じるまでの液の注入回数が多く、液漏れしにくいものであることが判る。また、液を吸収した後であっても装着圧が低く、装着感が良好であることが判る。 As is apparent from the results shown in Table 1, it can be seen that the absorbents obtained in each Example have a large number of liquid injections until the liquid leaks and are difficult to leak. Moreover, even after absorbing the liquid, it can be seen that the mounting pressure is low and the mounting feeling is good.
  〔実施例5〕
 本実施例では、図1ないし図4に示すパンツ型使い捨ておむつに用いられる吸収性コア5を、公知の積繊ドラムを用いて製造した。吸収性コア5は、図7に示す構成の単層構造体からなるものとした。吸収性コア5の長さは320mm、幅は120mmとした。折曲誘導部は三条形成し、中央折曲部誘導部は長さ80mm、幅10mmとした。側部折曲部誘導部は長さ160mm、幅10mmとした。中央折曲部誘導部の腹側部A寄りの端部と、側部折曲部誘導部の腹側部A寄りの端部とは、位置を一致させた。この位置は、吸収性コアにおける腹側部A寄りの端縁から80mm離間させた。中央折曲誘導部と側部折曲誘導部のとのピッチは22.5mmとした。腹側部Aを含む第1領域41の長さは194mmとし、腹側第2領域42A及び背側第2領域42Bの長さはいずれも63mmとした。第1領域41におけるパルプ繊維の坪量は222g/mで、吸水性ポリマーの坪量は222g/mであった。第2領域42におけるパルプ繊維の坪量は111g/mで、吸水性ポリマーの坪量は111g/mであった。この構成の吸収性コア5をティッシュペーパーからなる液透過性シート(坪量16g/m)で包み、吸収体を得た。
Example 5
In the present Example, the absorptive core 5 used for the pants-type disposable diaper shown in FIGS. 1 to 4 was manufactured using a known fiber stacking drum. The absorptive core 5 was made of a single layer structure having the configuration shown in FIG. The length of the absorbent core 5 was 320 mm and the width was 120 mm. The bending guide part was formed in three strips, and the central bending part guide part had a length of 80 mm and a width of 10 mm. The side bent portion guiding portion has a length of 160 mm and a width of 10 mm. The positions of the end portion of the central bent portion guiding portion near the ventral side portion A and the end portion of the side bent portion guiding portion near the ventral side portion A were matched. This position was separated from the edge of the absorbent core near the ventral side A by 80 mm. The pitch between the central bending guiding portion and the side bending guiding portion was 22.5 mm. The length of the first region 41 including the ventral portion A was 194 mm, and the lengths of the ventral second region 42A and the dorsal second region 42B were both 63 mm. The basis weight of the pulp fiber in the first region 41 was 222 g / m 2 , and the basis weight of the water absorbent polymer was 222 g / m 2 . The basis weight of the pulp fibers in the second region 42 was 111 g / m 2 , and the basis weight of the water-absorbing polymer was 111 g / m 2 . The absorbent core 5 having this configuration was wrapped with a liquid permeable sheet (basis weight 16 g / m 2 ) made of tissue paper to obtain an absorbent body.
  〔比較例4〕
 本比較例においては、実施例5と同様の折曲誘導部群を有するが、単一坪量である吸収性コアを製造した。吸収性コアにおけるパルプ繊維の坪量は178g/mで、吸水性ポリマーの坪量は178g/mであった。この吸収性コアを、実施例5と同様のティッシュペーパーで包んで吸収体を得た。
[Comparative Example 4]
In this comparative example, an absorbent core having a single basis weight was produced, although it had the same bending guide group as in Example 5. The basis weight of the pulp fibers in the absorbent core was 178 g / m 2 and the basis weight of the water-absorbing polymer was 178 g / m 2 . The absorbent core was wrapped with the same tissue paper as in Example 5 to obtain an absorbent body.
  〔比較例5〕
 本比較例は、実施例5において中央折曲誘導部を形成しなかった例である。それ以外は実施例5と同様にして吸収性コアを得た。この吸収性コアを、実施例5と同様のティッシュペーパーで包んで吸収体を得た。
[Comparative Example 5]
This comparative example is an example in which the central bending guide portion is not formed in the fifth embodiment. Otherwise, the absorbent core was obtained in the same manner as in Example 5. The absorbent core was wrapped with the same tissue paper as in Example 5 to obtain an absorbent body.
  〔評価〕
 実施例及び比較例で得られた吸収体を用いて図1に示す形態のパンツ型使い捨ておむつを製造した。このおむつについて、液の吸収速度、液の拡散面積及び股下部の装着圧を以下の方法で測定した。それらの結果を以下の表2に示す。
[Evaluation]
The underpants type disposable diaper of the form shown in FIG. 1 was manufactured using the absorber obtained by the Example and the comparative example. With respect to this diaper, the liquid absorption rate, the liquid diffusion area, and the crotch mounting pressure were measured by the following methods. The results are shown in Table 2 below.
  〔液の吸収速度〕
 図1に示すおむつを、そのサイドシール部Sの位置で切り裂いて平面状に展開した。表面シートを上側に向けた展開状態のおむつにおける該表面シート上に、注入点を中心に35mmの内径には圧がかからないように製作した円筒つきのアクリル板を乗せた。その上に2kgの錘を3つ(合計6kg)を等間隔に並べた。その状態で人工尿30gを円筒内に注入した際の吸収時間を測定した。注入点は、吸収体長手方向中心から腹側に50mmの位置とした。吸収時間が短いほど、吸収速度が速く、高評価となる。
[Liquid absorption rate]
The diaper shown in FIG. 1 was cut at the position of the side seal portion S and developed into a flat shape. An acrylic plate with a cylinder manufactured so as not to apply pressure to the inner diameter of 35 mm centering on the injection point was placed on the surface sheet in the diaper in a developed state with the surface sheet facing upward. On top of that, three 2 kg weights (total 6 kg) were arranged at equal intervals. In this state, the absorption time when 30 g of artificial urine was injected into the cylinder was measured. The injection point was 50 mm on the ventral side from the longitudinal center of the absorber. The shorter the absorption time, the faster the absorption speed and the higher the evaluation.
  〔液の拡散面積〕
 前述した〔液の吸収速度〕の液の注入を10分間隔で3回繰り返し、合計90g注入した後において、表面シートのうち濡れている箇所の面積を測定した。面積が大きいほど、効率的に吸収体を使用しており、高評価となる。
[Liquid diffusion area]
The above-described liquid injection of [Liquid Absorption Rate] was repeated three times at 10-minute intervals, and after injecting a total of 90 g, the area of the wetted portion of the topsheet was measured. The larger the area, the more efficiently the absorber is used and the higher the evaluation.
  〔腹側部の装着圧〕
 おむつの状態で、吸収体の腹側の端部から50mm離れた位置に、120gの人工尿を一括で吸収させた。3分後に周長380mmの筒におむつを装着し、吸収体上の装着圧を装着圧測定装置((株)エイエムアイ・テクノ製の接触圧測定器(AMI3037-2))によって測定した。具体的な測定法は以下のとおりである。腹部の装着圧は、低いほど腹部の圧迫が少ないことを示し、高評価となる。
[Ventral wearing pressure]
In the state of a diaper, 120 g of artificial urine was absorbed collectively at a position 50 mm away from the ventral end of the absorber. Three minutes later, a diaper was attached to a cylinder having a circumferential length of 380 mm, and the attachment pressure on the absorber was measured with an attachment pressure measuring device (a contact pressure measuring instrument (AMI3037-2 manufactured by AIM Techno Co., Ltd.)). The specific measurement method is as follows. The lower the abdominal wearing pressure, the lower the abdominal pressure, and the higher the evaluation.
  〔腹側部の装着圧の測定方法〕
 φ=15mmのエアパックを用い、おむつと円筒との間にエアパックを挿入して、装着圧を測定した。エアパックは、エアパックの中心が、おむつ幅方向においては、おむつの左右側縁と吸収性コアの左右両側縁との間のほぼ中央に位置し、おむつ長手方向においては、腹側部の長手方向の中心位置に位置するようにセットする。装着力の測定は、腹側部の左右両側において行い、合計2点の測定値の平均値を、腹側部の装着圧とする。
[Measurement method of ventral side pressure]
Using an air pack of φ = 15 mm, the air pack was inserted between the diaper and the cylinder, and the mounting pressure was measured. The center of the air pack is positioned approximately in the center between the left and right side edges of the diaper and the left and right side edges of the absorbent core in the diaper width direction, and in the diaper longitudinal direction, the center of the air pack is Set so that it is located at the center of the direction. The mounting force is measured on both the left and right sides of the abdominal side, and the average value of the two measured values in total is taken as the mounting pressure on the abdominal side.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
 表2に示す結果から明らかなとおり、実施例で得られた吸収体は、液の吸収速度が速いことが判る。また液の拡散面積が大きく、吸収性コアの面積を有効活用していることが判る。更に、液漏れが生じるまでの液の注入回数が多く、液漏れしにくいものであることが判る。また、液を吸収した後であっても装着圧が低く、装着感が良好であることが判る。 As is clear from the results shown in Table 2, it can be seen that the absorbents obtained in the examples have a high liquid absorption rate. Moreover, it can be seen that the diffusion area of the liquid is large and the area of the absorbent core is effectively utilized. Further, it can be seen that the number of times of liquid injection until the liquid leakage occurs is large and the liquid leakage is difficult. Moreover, even after absorbing the liquid, it can be seen that the mounting pressure is low and the mounting feeling is good.
 以上、詳述したとおり、本発明によれば、排泄された液を吸収しても、吸収性コアが局所的に膨潤しにくく、液を均一に吸収して漏れが生じにくく、かつ液を吸収しても装着感が損なわれにくいパンツ型吸収性物品が提供される。 As described above in detail, according to the present invention, even when the excreted liquid is absorbed, the absorbent core is unlikely to swell locally, the liquid is evenly absorbed and hardly leaked, and the liquid is absorbed. Even if a feeling of wearing is not spoiled, a pants type absorbent article is provided.

Claims (48)

  1.  吸収性コアを含む縦長の吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体と固定されている外装体とを備え、着用者の腹側に配される腹側部、股間部に配される股下部及び背側に配される背側部を有し、該外装体における該腹側部に位置する外装体腹側領域及び該背側部に位置する外装体背側領域それぞれの本体長手方向に沿う両側縁部どうしが接合されて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吸収性物品であって、
     前記吸収性コアは、坪量の異なる第1領域及び第2領域を少なくとも有し、第1領域は第2領域よりも坪量が高く、
     第1領域は少なくとも股下部を含み、第2領域は少なくとも背側部を含み、
     第1領域は、吸収性コアの長手方向に延びる複数条の折曲誘導部からなる折曲誘導部群を有しており、
     折曲誘導部群は、吸収性コアの幅方向中央域に位置する中央折曲誘導部と、該中央折曲誘導部の両側部に位置する一対の側部折曲誘導部とからなり、
     折曲誘導部群は、腹側部に位置する外装体における下端部よりも股下部寄りに位置しており、背側部には該折曲誘導部群が非存在となっているパンツ型吸収性物品。
    A vertically long absorbent main body including an absorbent core and an exterior body disposed on the non-skin facing surface side of the absorbent main body and fixed to the absorbent main body, and disposed on the stomach side of the wearer It has an abdominal part, a crotch part arranged in the crotch part, and a dorsal part arranged on the dorsal side, and is located in the exterior body ventral region and the back side part located in the abdominal side part of the exterior body A pants-type absorbent article in which both side edges along the longitudinal direction of the body of the exterior body back side region are joined to each other to form a waist opening and a pair of leg openings,
    The absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
    The first region includes at least a crotch portion; the second region includes at least a dorsal side;
    The first region has a bending guide portion group composed of a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
    The bending guide part group consists of a central bending guide part located in the center region in the width direction of the absorbent core, and a pair of side bending guide parts located on both sides of the central bending guide part,
    The bending guide part group is located closer to the crotch than the lower end part of the exterior body located on the abdominal side part, and the pant type absorption in which the bending guide part group is absent on the back side part Sex goods.
  2.  第1領域が少なくとも腹側部及び股下部を含む請求項1に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 1, wherein the first region includes at least a ventral part and a crotch part.
  3.  第1領域の長さが、吸収性コアの全長の50%以上90%以下である請求項2に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 2, wherein the length of the first region is 50% or more and 90% or less of the entire length of the absorbent core.
  4.  吸収性本体の幅方向に沿って見たとき、第1領域の坪量がいずれの部位でも同じになっている請求項1ないし3のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 1 to 3, wherein the basis weight of the first region is the same at any part when viewed along the width direction of the absorbent main body.
  5.  吸収性本体の幅方向に沿って見たとき、第2領域の坪量がいずれの部位でも同じになっている請求項1ないし4のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 1 to 4, wherein when viewed along the width direction of the absorbent main body, the basis weight of the second region is the same at any part.
  6.  第1領域の坪量は、第2領域の坪量に対して120%以上250%以下である請求項1ないし5のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 1 to 5, wherein the basis weight of the first region is 120% to 250% with respect to the basis weight of the second region.
  7.  第1領域よりも坪量が低く、かつ第2領域よりも坪量が高い第3領域を更に有し、
     第3領域は少なくとも腹側部を含む請求項1ないし6のいずれか一項に記載のパンツ型吸収性物品。
    A third region having a lower basis weight than the first region and a higher basis weight than the second region;
    The pants-type absorbent article according to any one of claims 1 to 6, wherein the third region includes at least a ventral part.
  8.  第3領域の坪量は、第2領域の坪量に対して105%以上200%以下である請求項7に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 7, wherein the basis weight of the third region is 105% or more and 200% or less with respect to the basis weight of the second region.
  9.  第3領域の坪量は、第1領域の坪量に対して50%以上95%以下である請求項7又は8に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 7 or 8, wherein the basis weight of the third region is 50% to 95% with respect to the basis weight of the first region.
  10.  折曲誘導部群が、着用者の大便排泄部の位置よりも背側部側において非存在となっている請求項1ないし9のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 1 to 9, wherein the bending guide part group is absent on the back side from the position of the stool excretion part of the wearer.
  11.  折曲誘導部群を構成する各折曲誘導部の幅が同じになっている請求項1ないし10のいずれか一項に記載のパンツ型吸収性物品。 The underpants type absorbent article according to any one of claims 1 to 10, wherein the widths of the bending guide portions constituting the bending guide portion group are the same.
  12.  折曲誘導部群を構成する各折曲誘導部の長さが同じになっている請求項1ないし11のいずれか一項に記載のパンツ型吸収性物品。 The underpants type absorbent article according to any one of claims 1 to 11, wherein the lengths of the bending guide portions constituting the bending guide portion group are the same.
  13.  吸収性コアが単層構造体から構成されている請求項1ないし12のいずれか一項に記載のパンツ型吸収性物品。 The pant-type absorbent article according to any one of claims 1 to 12, wherein the absorbent core is composed of a single-layer structure.
  14.  吸収性コアの肌対向面側及び非肌対向面側に、該吸収性コアを被覆する液透過性シートが対向配置されており、
     対向配置された前記液透過性シートと、該液透過性シートの間に位置する、吸収性コアの構成材料が非存在となっている空間とで、中央折曲誘導部が画成されている請求項1ないし13のいずれか一項に記載のパンツ型吸収性物品。
    The liquid-permeable sheet which covers this absorptive core is oppositely arranged on the skin opposing surface side and non-skin opposing surface side of an absorptive core,
    A central folding guide portion is defined by the liquid-permeable sheet disposed oppositely and a space that is located between the liquid-permeable sheets and in which the constituent material of the absorbent core is absent. The underpants type absorbent article as described in any one of Claims 1 thru | or 13.
  15.  前記各折曲誘導部の端部のうち、背側シート部材側の端部Tと、吸収性コアにおける第2領域と第1領域との境界位置Tとの間の距離が、5mm以上50mm以下、特に10mm以上45mm以下である請求項1ないし14のいずれか一項に記載のパンツ型吸収性物品。 Wherein one end of each bent guiding section, the end portion T 1 of the dorsal sheet member side, the distance between the boundary position T 2 of the second region and the first region of the absorbent core, or 5mm The underpants-type absorbent article according to any one of claims 1 to 14, which is 50 mm or less, particularly 10 mm or more and 45 mm or less.
  16.  外装体が、腹側部に位置する腹側シート部材と、背側部に位置する背側シート部材とを含み、
     吸収性本体が両シート部材に架け渡して固定されている請求項1ないし15のいずれか一項に記載のパンツ型吸収性物品。
    The exterior body includes a ventral sheet member positioned on the ventral part and a dorsal sheet member positioned on the dorsal part,
    The pants-type absorbent article according to any one of claims 1 to 15, wherein the absorbent main body is fixed over both sheet members.
  17.  背側シート部材の長手方向の下端部から、更に長手方向の下方側に延出した後身頃延出域が連設されている請求項16に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 16, wherein a rear body extending region extending further downward in the longitudinal direction is continuously provided from a lower end portion in the longitudinal direction of the back side sheet member.
  18.  後身頃延出域においては、外層シート材と内層シート材との間に延出域弾性部材が伸長状態で固定されていることによって、延出部ギャザーが形成されている請求項17に記載のパンツ型吸収性物品。 In the back body extension area, the extension part gather is formed by the extension area elastic member being fixed in the extended state between the outer layer sheet material and the inner layer sheet material. Pants-type absorbent article.
  19.  前期背側シート部材を構成する外層シート材における延出部が本体長手方向Xに沿う長さをLとし、延出部のうち第2領域と重なる領域の本体長手方向Xに沿う長さをLとしたとき、Lに対するLの割合である[L/L]×100の値が50%以上100%以下、とりわけ60%以上100%以下である、請求項16ないし18のいずれか一項に記載の吸収性物品。 A length extending portion in the outer layer sheet constituting the year dorsal sheet member along the body longitudinal direction X and L 1, the length along the body longitudinal direction X of the region overlapping the second region of the extending portion when the L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of × 100 or more and 100% or 50% or less, especially 60% to 100%, of the claims 16 to 18 The absorbent article as described in any one.
  20.  外装体が、腹側部から股下部を経て背側部までにわたって配されている請求項1ないし19のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 1 to 19, wherein the exterior body is arranged from the abdominal side to the back side through the crotch.
  21.  吸収性コアを含む縦長の吸収性本体と、該吸収性本体の非肌対向面側に配されて該吸収性本体と固定されている外装体とを備え、着用者の腹側に配される腹側部、股間部に配される股下部及び背側に配される背側部を有し、該外装体における該腹側部に位置する外装体腹側領域及び該背側部に位置する外装体背側領域それぞれの本体長手方向に沿う両側縁部どうしが接合されて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吸収性物品であって、
     前記吸収性コアは、坪量の異なる第1領域及び第2領域を少なくとも有し、第1領域は第2領域よりも坪量が高く、
     第1領域は少なくとも股下部を含み、第2領域は少なくとも腹側部及び背側部を含み、
     第1領域は、吸収性コアの長手方向に延びる複数条の折曲誘導部からなる折曲誘導部群を有しており、
     折曲誘導部群は、吸収性コアの幅方向中央域に位置する中央折曲誘導部と、該中央折曲誘導部の両側部に位置する一対の側部折曲誘導部とからなり、
     折曲誘導部群は、腹側部に位置する外装体における下端部よりも股下部寄りに位置しており、背側部には該折曲誘導部群が非存在となっているパンツ型吸収性物品。
    A vertically long absorbent main body including an absorbent core and an exterior body disposed on the non-skin facing surface side of the absorbent main body and fixed to the absorbent main body, and disposed on the stomach side of the wearer It has an abdominal part, a crotch part arranged in the crotch part, and a dorsal part arranged on the dorsal side, and is located in the exterior body ventral region and the back side part located in the abdominal side part of the exterior body A pants-type absorbent article in which both side edges along the longitudinal direction of the body of the exterior body back side region are joined to each other to form a waist opening and a pair of leg openings,
    The absorbent core has at least a first region and a second region having different basis weights, and the first region has a higher basis weight than the second region,
    The first region includes at least a crotch portion, the second region includes at least a ventral portion and a dorsal portion,
    The first region has a bending guide portion group composed of a plurality of bending guide portions extending in the longitudinal direction of the absorbent core.
    The bending guide part group consists of a central bending guide part located in the center region in the width direction of the absorbent core, and a pair of side bending guide parts located on both sides of the central bending guide part,
    The bending guide part group is located closer to the crotch than the lower end part of the exterior body located on the abdominal side part, and the pant type absorption in which the bending guide part group is absent on the back side part Sex goods.
  22.  第1領域の長さが、吸収性コアの全長の40%以上80%以下である請求項21に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 21, wherein the length of the first region is 40% to 80% of the entire length of the absorbent core.
  23.  吸収性本体の幅方向に沿って見たとき、第1領域の坪量がいずれの部位でも同じになっている請求項21又は22に記載のパンツ型吸収性物品。 The pants-type absorbent article according to claim 21 or 22, wherein when viewed along the width direction of the absorbent main body, the basis weight of the first region is the same in any part.
  24.  吸収性本体の本体幅方向に沿って見たとき、第2領域の坪量がいずれの部位でも同じになっている請求項21ないし23のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 21 to 23, wherein the basis weight of the second region is the same at any part when viewed along the main body width direction of the absorbent main body.
  25.  腹側部の第2領域の坪量と、背側部の第2領域の坪量とが実質的に同じになっている請求項21ないし24のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 21 to 24, wherein the basis weight of the second region of the ventral side and the basis weight of the second region of the back side are substantially the same. .
  26.  折曲誘導部群が、着用者の大便排泄部の位置よりも背側部側において非存在となっている請求項21ないし25のいずれか一項に記載のパンツ型吸収性物品。 26. The pant-type absorbent article according to any one of claims 21 to 25, wherein the bending guide part group is absent on the dorsal side from the position of the stool excretion part of the wearer.
  27.  折曲誘導部群を構成する各折曲誘導部の幅が同じになっている請求項21ないし26のいずれか一項に記載のパンツ型吸収性物品。 27. The pant-type absorbent article according to any one of claims 21 to 26, wherein the widths of the bending guide portions constituting the bending guide portion group are the same.
  28.  各側部折曲誘導部の長さが同じになっている請求項21ないし27のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 21 to 27, wherein the lengths of the respective side bending guide portions are the same.
  29.  中央折曲誘導部の長さが各側部折曲誘導部の長さよりも短くなっている請求項21ないし28のいずれか一項に記載のパンツ型吸収性物品。 29. The pants-type absorbent article according to any one of claims 21 to 28, wherein a length of the central bending guide portion is shorter than a length of each side bending guide portion.
  30.  中央折曲誘導部の両端部のうちの一方の端部の位置を、側部折曲誘導部の両端部のうちの一方の端部の位置と一致させた請求項21ないし29のいずれか一項に記載のパンツ型吸収性物品。 30. The position according to any one of claims 21 to 29, wherein a position of one end portion of both end portions of the central bending guide portion is matched with a position of one end portion of both end portions of the side bending guide portion. The pants-type absorbent article according to Item.
  31.  腹側部寄りの位置において、中央折曲誘導部の両端部のうちの腹側部寄りの端部の位置を、側部折曲誘導部の両端部のうちの腹側部寄りの端部の位置と一致させた請求項21ないし30のいずれか一項に記載のパンツ型吸収性物品。 In the position closer to the ventral side, the position of the end closer to the ventral side of both ends of the central bending guide part is the position of the end closer to the ventral side of both ends of the side bending guide part. The pants-type absorbent article according to any one of claims 21 to 30, wherein the pants-type absorbent article is matched with a position.
  32.  吸収性コアが単層構造体から構成されている請求項21ないし31のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 21 to 31, wherein the absorbent core is composed of a single-layer structure.
  33.  吸収性コアの肌対向面側及び非肌対向面側に、該吸収性コアを被覆する液透過性シートが対向配置されており、
     対向配置された前記液透過性シートと、該液透過性シートの間に位置する、吸収性コアの構成材料が非存在となっている空間とで、中央折曲誘導部が画成されている請求項21ないし32のいずれか一項に記載のパンツ型吸収性物品。
    The liquid-permeable sheet which covers this absorptive core is oppositely arranged on the skin opposing surface side and non-skin opposing surface side of an absorptive core,
    A central folding guide portion is defined by the liquid-permeable sheet disposed oppositely and a space that is located between the liquid-permeable sheets and in which the constituent material of the absorbent core is absent. The pants-type absorbent article according to any one of claims 21 to 32.
  34.  前記各折曲誘導部の端部のうち、背側シート部材側の端部Tと、吸収性コアにおける第2領域と第1領域との境界位置Tとの間の距離が、5mm以上50mm以下、特に10mm以上45mm以下である請求項21ないし33のいずれか一項に記載のパンツ型吸収性物品。 Wherein one end of each bent guiding section, the end portion T 1 of the dorsal sheet member side, the distance between the boundary position T 2 of the second region and the first region of the absorbent core, or 5mm The pants-type absorbent article according to any one of claims 21 to 33, which is 50 mm or less, particularly 10 mm or more and 45 mm or less.
  35.  外装体が、腹側部に位置する腹側シート部材と、背側部に位置する背側シート部材とを含み、
     吸収性本体が両シート部材に架け渡して固定されている請求項21ないし34のいずれか一項に記載のパンツ型吸収性物品。
    The exterior body includes a ventral sheet member positioned on the ventral part and a dorsal sheet member positioned on the dorsal part,
    The pants-type absorbent article according to any one of claims 21 to 34, wherein the absorbent main body is fixed across the two sheet members.
  36.  背側シート部材の長手方向の下端部から、更に長手方向の下方側に延出した後身頃延出域が連設されている請求項35に記載のパンツ型吸収性物品。 36. The pant-type absorbent article according to claim 35, wherein a rear body extension region extending further downward in the longitudinal direction is continuously provided from a lower end portion in the longitudinal direction of the back side sheet member.
  37.  前記背側シート部材を構成する外層シート材における延出部が本体長手方向Xに沿う長さをLとし、延出部のうち第2領域と重なる領域の本体長手方向Xに沿う長さをLとしたとき、Lに対するLの割合である[L/L]×100の値が50%以上100%以下、とりわけ60%以上100%以下である、請求項35又は36に記載の吸収性物品。 A length extending portion in the outer layer sheet constituting the back-side sheet member along the body longitudinal direction X and L 1, the length along the body longitudinal direction X of the region overlapping the second region of the extending portion when the L 2, a ratio of L 2 for L 1 [L 2 / L 1 ] value of × 100 or more and 100% or 50% or less, is 100% or less especially 60% to claim 35 or 36 The absorbent article as described.
  38.  外装体が、腹側部から股下部を経て背側部までにわたって配されている請求項21ないし37のいずれか一項に記載のパンツ型吸収性物品。 The underpants-type absorbent article according to any one of claims 21 to 37, wherein the exterior body is disposed from the abdominal side to the back side through the crotch.
  39.  前記吸収性本体の長手方向の両端部それぞれが、前記外装体と、該外装体とは別体の幅方向に延びる帯状シートとで被覆され、接着剤を介して該外装体と該帯状シートとの間に固定されており、
     背側領域の前記接着剤は、その塗布量が、腹側領域の前記接着剤の塗布量に比べて少ない、請求項1ないし38のいずれか一項に記載のパンツ型吸収性物品。
    Both ends in the longitudinal direction of the absorbent main body are covered with the exterior body and a belt-like sheet extending in the width direction separate from the exterior body, and the exterior body and the belt-like sheet are interposed via an adhesive. Fixed between
    The pants-type absorbent article according to any one of claims 1 to 38, wherein the amount of the adhesive in the dorsal region is smaller than the amount of the adhesive in the ventral region.
  40.  各前記接着剤は、前記吸収性本体の長手方向の端部端縁を跨いで塗布されている請求項39に記載のパンツ型吸収性物品。 40. The pants-type absorbent article according to claim 39, wherein each of the adhesives is applied across an end edge in a longitudinal direction of the absorbent main body.
  41.  背側部の前記接着剤は、その塗布面積が、腹側部の前記接着剤の塗布面積に比べて低い請求項39又は40に記載のパンツ型吸収性物品。 41. The pants-type absorbent article according to claim 39 or 40, wherein the application area of the adhesive on the back side is lower than the application area of the adhesive on the abdominal side.
  42.  背側部の前記接着剤の塗布面積が、腹側部の前記接着剤の塗布面積の2/25以上4/5である、前記請求項39ないし41のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorption according to any one of claims 39 to 41, wherein an application area of the adhesive on the back side is 2/25 or more and 4/5 of an application area of the adhesive on the abdominal side. Sex goods.
  43.  背側部の前記接着剤の塗布面積が1cm以上60cm以下であり、
     腹側部の前記接着剤の塗布面積が5cm以上80cm以下である、請求項39ないし42のいずれか一項に記載のパンツ型吸収性物品。
    The application area of the adhesive on the back side is 1 cm 2 or more and 60 cm 2 or less,
    43. The pant-type absorbent article according to any one of claims 39 to 42, wherein an application area of the adhesive on the stomach side is 5 cm 2 or more and 80 cm 2 or less.
  44.  背側部の前記接着剤の塗布量が、腹側部の前記接着剤の塗布量の2/25以上4/5以下である、請求項39ないし43のいずれか一項に記載のパンツ型吸収性物品。 44. The pant-type absorption according to any one of claims 39 to 43, wherein an application amount of the adhesive on the back side is 2/25 or more and 4/5 or less of an application amount of the adhesive on the abdominal side. Sex goods.
  45.  背側部の前記接着剤の塗布量が、2g/m以上10g/m以下であり、
     腹側部の前記接着剤の塗布量が、5g/m以上25g/m以下である、請求項39ないし44のいずれか一項に記載のパンツ型吸収性物品。
    The application amount of the adhesive on the back side is 2 g / m 2 or more and 10 g / m 2 or less,
    45. The pant-type absorbent article according to any one of claims 39 to 44, wherein an application amount of the adhesive on the ventral part is 5 g / m 2 or more and 25 g / m 2 or less.
  46.  前記帯状シートの幅が、前記外装体の幅方向の長さに対して、10%以上60%以下である請求項39ないし45のいずれか一項に記載のパンツ型吸収性物品。 The pants-type absorbent article according to any one of claims 39 to 45, wherein a width of the belt-like sheet is 10% or more and 60% or less with respect to a length in a width direction of the exterior body.
  47.  背側部の前記接着剤の螺旋を描く各塗布線の太さが、腹側部の前記接着剤の螺旋を描く塗布線の太さよりも細くなっている請求項39ないし46のいずれか一項に記載のパンツ型吸収性物品。 47. The thickness of each application line that describes the spiral of the adhesive on the dorsal side is thinner than the thickness of the application line that describes the spiral of the adhesive on the ventral side. The pants-type absorbent article described in 1.
  48.  背側部の前記接着剤の螺旋を描く塗布線の本数が、腹側部の前記接着剤の螺旋を描く塗布線の本数よりも少なくなっている請求項39ないし47のいずれか一項に記載のパンツ型吸収性物品。 48. The number of application lines that draw the spiral of the adhesive on the dorsal side is less than the number of application lines that draw the spiral of the adhesive on the ventral side. Pants-type absorbent article.
PCT/JP2014/073874 2013-11-14 2014-09-10 Pant-type absorbent article WO2015072218A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201490001094.8U CN206063309U (en) 2013-11-14 2014-09-10 Pants type absorptive article
RU2016120000U RU173358U1 (en) 2013-11-14 2014-09-10 ABSORBABLE PRODUCT TYPE OF PANTIES

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2013236216A JP6219691B2 (en) 2013-11-14 2013-11-14 Pants-type disposable diaper
JP2013-236216 2013-11-14
JP2013-237282 2013-11-15
JP2013237282 2013-11-15
JP2013237283 2013-11-15
JP2013-237283 2013-11-15
JP2014-161652 2014-08-07
JP2014161661A JP6408292B2 (en) 2013-11-15 2014-08-07 Pants-type absorbent article
JP2014161652A JP6420087B2 (en) 2013-11-15 2014-08-07 Pants-type absorbent article
JP2014-161661 2014-08-07

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WO2015072218A1 true WO2015072218A1 (en) 2015-05-21

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