WO2015198928A1 - Produit absorbant - Google Patents

Produit absorbant Download PDF

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Publication number
WO2015198928A1
WO2015198928A1 PCT/JP2015/067404 JP2015067404W WO2015198928A1 WO 2015198928 A1 WO2015198928 A1 WO 2015198928A1 JP 2015067404 W JP2015067404 W JP 2015067404W WO 2015198928 A1 WO2015198928 A1 WO 2015198928A1
Authority
WO
WIPO (PCT)
Prior art keywords
width direction
elastic member
longitudinal direction
absorbent article
absorbent core
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2015/067404
Other languages
English (en)
Japanese (ja)
Inventor
隆将 村井
市川　誠
貴仁 永井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
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 JP2014132244A external-priority patent/JP5648143B1/ja
Priority claimed from JP2014156884A external-priority patent/JP5651800B1/ja
Application filed by Unicharm Corp filed Critical Unicharm Corp
Publication of WO2015198928A1 publication Critical patent/WO2015198928A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means

Definitions

  • the present invention relates to an absorbent article such as a disposable diaper that absorbs waste fluid such as urine.
  • the disposable diaper of patent document is provided with the waist elastic member 30, the 1st leak-proof sheet 33, and the 2nd leak-proof sheet 34. As shown in FIG.
  • the waist elastic member 30 is configured to overlap both the first fixed rear end portion 38 of the first leakproof sheet 33 and the second fixed rear end portion 43 of the second leakproof sheet 34.
  • the waist elastic member 30 is configured to overlap with both the first fixed rear end portion 38 and the second fixed rear end portion 43, the contraction force of the waist elastic member 30 Not only the expansion elastic member 39 of the first leakproof sheet 33 but also the contraction force of the elastic member 30 for the waist and the contraction force of the expansion elastic member 44 of the second leakproof sheet 34 are interlocked, and the second fixed rear end Even the part 43 contracts. If the second fixed rear end portion 43 also shrinks, the area where wrinkles are generated will be too wide, and the influence of the wrinkles makes it difficult to determine the center in the width direction, and the absorbent article such as a disposable diaper and wear It becomes difficult to align with the person's body. Therefore, it is desirable to make it easier to identify the center in the width direction of the absorbent article.
  • the present invention has been made in view of the above-described conventional problems, and its object is to make it easier to identify the center in the width direction of the absorbent article.
  • the main invention to achieve the above object is A body portion having a longitudinal direction, a width direction, and a thickness direction, and having a ventral side, a crotch and a back side in line in the longitudinal direction is a liquid-permeable top sheet, a liquid-impermeable An absorbent article comprising a back sheet and an absorbent core,
  • the longitudinal end of the main body constitutes a waist opening, and a waist elastic member is provided at the end along the width direction.
  • the absorbent core is present in a portion of the main body portion on the inner side than the back end in the longitudinal direction, and a portion between the waist elastic member and the absorbent core in the main body portion is The waist elastic member and the absorbent core are not present;
  • the body portion is provided with a pair of first solid gathers spaced in the width direction along the longitudinal direction, A pair of second solid gathers are provided along the longitudinal direction on the outer side in the width direction than the first solid gather,
  • the first elastic member is disposed in the longitudinal direction, and the first solid end can stand on the skin side in the thickness direction with the first base end that can not stand up and the first base end as a fulcrum 1) having an upright portion side by side in the width direction
  • a second elastic member is disposed in the longitudinal direction, and a second base end portion which can not stand up and a second base end portion which can stand on the skin side in the thickness direction with the second base end portion as a fulcrum (2) having two standing portions side by side in the
  • the present invention it is possible to provide a region in which contraction in the width direction is less likely to occur in the second fixing portion.
  • the region in which shrinkage does not easily occur substantially extends the material, and wrinkles are less likely to be formed outside in the width direction than this region. Therefore, the center in the width direction can be more easily determined with reference to these regions on the left and right sides.
  • FIG. 2A, 2B, and 2C are a cross-sectional view taken along the line AA, a cross-sectional view taken along the line BB, and a cross-sectional view taken along the line CC, respectively, in FIG.
  • a body portion having a longitudinal direction, a width direction, and a thickness direction, and having a ventral side, a crotch and a back side in line in the longitudinal direction is a liquid-permeable top sheet, a liquid-impermeable
  • An absorbent article comprising a back sheet and an absorbent core,
  • the longitudinal end of the main body constitutes a waist opening, and a waist elastic member is provided at the end along the width direction.
  • the absorbent core is present in a portion of the main body portion on the inner side than the back end in the longitudinal direction, and a portion between the waist elastic member and the absorbent core in the main body portion is The waist elastic member and the absorbent core are not present;
  • the body portion is provided with a pair of first solid gathers spaced in the width direction along the longitudinal direction, A pair of second solid gathers are provided along the longitudinal direction on the outer side in the width direction than the first solid gather,
  • the first elastic member is disposed in the longitudinal direction, and the first solid end can stand on the skin side in the thickness direction with the first base end that can not stand up and the first base end as a fulcrum 1) having an upright portion side by side in the width direction
  • a second elastic member is disposed in the longitudinal direction, and a second base end portion which can not stand up and a second base end portion which can stand on the skin side in the thickness direction with the second base end portion as a fulcrum (2) having two standing portions side by side in the
  • the waist elastic member and the first elastic member contract continuously.
  • the second fixing portion is separated in the width direction from the expansion / contraction region of the waist elastic member across the first fixing portion, so the contraction force of the waist elastic member and the contraction force of the second elastic member are not interlocked.
  • the contraction force of the waist elastic member and the contraction force of the second elastic member are interlocked, and the second fixation portion is obtained. My thigh contracts.
  • the region where shrinkage does not easily occur is substantially extended by the material, and wrinkles are not easily formed outside this region in the width direction, and furthermore, only the central region on the back side is sunk inward in the longitudinal direction by the contraction force of the first elastic member Because of the shape, the center in the width direction can be more easily identified with reference to these regions on the left and right sides. In addition, it is difficult for the flap to get under the body, and it is easy to pull it outward in the width direction, so that it is possible to stretch the wrinkles and bumps formed under the user's body and fit the product. Also improves the quality. In addition, it becomes easy to insert the pad when using the absorbent pad as the auxiliary absorption in combination by extending the wrinkles and bumps.
  • the second fixing portion be present outside the absorbent core in the longitudinal direction.
  • the second fixing portion can be formed closer to the end portion in the longitudinal direction because the second fixing portion is present outside the absorbent core in the longitudinal direction.
  • a region in which contraction in the width direction is not easily generated can be provided, and by providing a region in which contraction in the width direction is not easily generated, the center in the width direction is provided.
  • the shape of the end in the longitudinal direction in the absorbent core is a curved shape in which the central portion in the width direction protrudes outward in the longitudinal direction more than the end in the width direction. Is desirable.
  • the shape of the longitudinal edge of the absorbent core is such that the central portion in the width direction protrudes outward in the longitudinal direction more than the end portion in the width direction. Since it is a curved shape, the waist elastic member and the first upright portion contract along the curved shape by interlocking the contraction force of the waist elastic member and the contraction force of the first elastic member. Therefore, the central portion in the width direction can be easily determined based on the shape contracted along the curved shape. In addition, since the space between the first solid gather and the top sheet formed near the boundary between the first fixed part and the first upright part of the first solid gather can be increased because the thickness of the absorbent core is small, the pocket shape Space can be increased, leakage can be reduced, and an absorbent pad can be easily inserted.
  • Such an absorbent article It is desirable that at least the central region in the width direction of the absorbent core be formed to have a basis weight lower than the other regions of the absorbent core.
  • the region becomes a mark at the time of wearing of the disposable diaper (absorbent pad) and the fit of the pad is reduced. You can do better. Accordingly, alignment between the widthwise center of the disposable diaper and the center of the user's body (or the widthwise center of the absorbent pad) becomes easier.
  • the waist elastic member includes a plurality of thread-like elastic members along the width direction, Of the first fixing portion, the innermost fixed end in the longitudinal direction is located at the non-existing portion, At least a portion of the first fixing portion is provided in a region of the plurality of thread-like elastic members which is sandwiched between the innermost thread-like elastic member in the longitudinal direction and the outermost thread-like elastic member. Is desirable.
  • the fixing portion is provided in a region sandwiched by the innermost thread-like elastic member in the longitudinal direction and the outermost thread-like elastic member, thereby standing up in the natural state.
  • the plurality of thread-like elastic members are drawn inwardly due to the longitudinal contraction force acting on the portion. Therefore, the end on the back side is formed in a shape (R shape) close to an arc.
  • the non-existing portion which is lower in rigidity than other regions, is drawn inward due to the longitudinal contraction force acting on the rising portion.
  • a combination of the non-existence portion attracted to the inside and the back portion forms a shape (R-shaped) closer to a circular arc.
  • the center of the disposable diaper in the width direction and the body of the wearer Alignment with the center (or the center in the width direction of the absorbent pad) is facilitated.
  • there is no elastic member at the end on the back side and a soft region with small rigidity is widely formed, so that the skin feels good even when in contact with the skin of the wearer.
  • the first fixing portion be provided over the entire region sandwiched by the innermost thread-like elastic member and the outermost thread-like elastic member in the longitudinal direction.
  • Such an absorbent article A region which is located outside the outermost thread-like elastic member in the longitudinal direction at the back end and which contracts as the thread-like elastic member contracts and which is a space between the adjacent thread-like elastic members It is more desirable that a long contraction region be formed in the longitudinal direction.
  • the longitudinal length of the contraction area is longer than half of the longitudinal length of the area sandwiched by the outermost thread elastic member and the inner thread elastic member.
  • the vicinity of the end on the back side is formed in a shape (R-shaped) close to a more distinct circular arc.
  • a back side flap is formed on the back side of the main body to extend outward in the width direction from the main body, and a pair of fastening tapes are provided on both sides in the width direction of the back side flap
  • a pair of the fastening tapes each have an engaging portion that engages with the ventral side when the absorbent article is worn,
  • a center line connecting the central positions of the pair of engaging portions along the width direction is It is desirable to pass through the non-existing portion at the central portion in the width direction of the absorbent article.
  • the pocket in a diaper having a pocket on the rear side, the pocket can be formed cleanly by applying an equal tensile force to the portion where the pocket is formed.
  • the longitudinal inner end of the first fixing portion be present outside in the longitudinal direction than a position through which the central line passes.
  • the tensile force directed outward in the width direction acting along the center line is likely to act on the entire nonexistent portion without being hindered by the rigid fixing portion. This makes it easier to suppress the occurrence of problems such as the occurrence of wrinkles in the non-existing portion.
  • the outer end positions of the pair of engaging portions are defined as the outer end position when the position of the longitudinal outer end at a predetermined position in the width direction of the engaging portion is an outer end position. It is desirable that the straight line connecting along the width direction passes through the portion of the main body portion where the waist elastic member is disposed.
  • the inner end positions of the pair of engaging portions are defined as the inner end position of the longitudinal inner end at a predetermined position in the width direction of the engaging portion. It is desirable that a straight line connecting along the width direction passes through a portion of the main body portion in which the absorbent core is disposed.
  • the pair of fastening tapes has the engaging portions at a plurality of positions in the longitudinal direction, and the central line is a portion of the plurality of the engaging portions provided in the longitudinal direction. Among them, it is preferable to pass through the central position defined for the engaging portion closest to the position where the waist elastic member is disposed in the longitudinal direction.
  • the back side flap and the fastening tape are constituted by different members, and the fastening tape is joined to the widthwise outer end of the back side flap. Is desirable.
  • the two sheet members constituting the back side flap and the fastening tape overlap in the thickness direction, and the strength of the joint portion is increased. Can. As a result, even when the fastening tape is strongly pulled to the left and right, it is possible to prevent the joint from being torn or peeled off.
  • the absorbent article has a plurality of folds along the width direction, which are base points when the absorbent article is folded in the longitudinal direction, It is desirable that one of the regions in which the plurality of folds are formed passes through the non-existing portion.
  • At least one of the plurality of folds is formed to pass through the region of the non-rigid portion with low rigidity, so that the non-existent portion is likely to be creased. .
  • This makes it easy to fold the diaper 1 in the longitudinal direction. Furthermore, when the diaper 1 is put in the wearing state, the pocket-like space SP is easily formed.
  • FIG. 1 is a schematic plan view of the unfolded state (after-mentioned) of the disposable diaper 1 for adults as an absorbent article which concerns on embodiment.
  • 2A, FIG. 2B, and FIG. 2C are a cross-sectional view taken along the line AA, a cross-sectional view taken along the line BB, and a cross-sectional view taken along the line CC, respectively, in FIG. 2A to 2C, only one side in the width direction is shown for convenience of the paper.
  • FIG. 3 is a schematic perspective view of the disposable diaper 1 in an attached state
  • FIG. 3 is a schematic perspective view of the disposable diaper 1 in an attached state
  • FIG. 4 is a schematic plan view showing a back side 1 b of the disposable diaper 1 in an enlarged manner.
  • FIG. 5 is a schematic cross-sectional view showing how a pocket-like space SP is formed in the main body 1k based on the contraction force of the first solid gather 41g1 (details will be described later).
  • the fastening of each fastening tape 61 to the target tape 65 is released, and the abdominal side 1a, the crotch 1m and the dorsal side 1b are aligned in the longitudinal direction While being in the state, the contraction of the first standing portion 41s1 based on the first solid gather elastic member 451 (corresponding to the first elastic member), and the second solid gather elastic member 452 (corresponding to the second elastic member) Until the contraction of the second erecting portion 41s2 based on, the contraction of the back end 1kbeL based on the waist elastic member 71, and the contraction of the rec flap 1mf based on the The disposable diaper 1 is in a stretched state.
  • the disposable diaper 1 is a unfolded diaper to be worn by a wearer.
  • the disposable diaper 1 has a longitudinal direction, a width direction, and a thickness direction as three directions orthogonal to each other.
  • the disposable diaper 1 has a ventral side 1a, a crotch 1m and a back side 1b in this order in the longitudinal direction.
  • the abdominal side 1a covers the wearer's ventral side
  • the crotch 1m covers the wearer's crotch
  • the dorsal side 1b covers the wearer's dorsal side.
  • FIG. 1 is a view of the disposable diaper 1 from the skin side.
  • the disposable diaper 1 has a sheet-like main body portion 1k as shown in FIGS. 1, 2B and 2C.
  • the main body 1k according to the present embodiment includes an absorbent core 11 for absorbing waste fluid such as urine, a top sheet 21 (corresponding to a surface sheet) covering the absorbent core 11 from the skin side in the thickness direction, and Leakproof sheet 30 covering the elastic core 11 from the non-skin side, and an exterior sheet 31 (corresponding to a back sheet) covering the absorbent core 11 from the non-skin side of the leakproof sheet 30 and forming the exterior of the disposable diaper 1 And.
  • a solid gather sheet 47 for forming the second solid gather 41g2, a fastening tape 61, a target tape 65, a waist elastic member 71, a leg elastic member 81 and the like are provided to the main body 1k, and disposable.
  • the diaper 1 is completed.
  • the longitudinal direction, the width direction, and the thickness direction of the main body portion 1k are the same as the longitudinal direction, the width direction, and the thickness direction of the disposable diaper 1, respectively. Therefore, in the following description, the disposable diaper 1 and the main body portion 1k are used without particular distinction in these directions.
  • the absorbent core 11 is present in a longitudinally inner portion of the back end 1 kbe L in the main body 1 k (FIG. 1).
  • the absorbent core 11 is a liquid absorbent fiber such as pulp fiber, or a liquid absorbent granular material such as a super absorbent polymer (SAP), which is formed into a substantially hourglass shape in plan view as an example of a predetermined shape.
  • SAP super absorbent polymer
  • the absorbent core 11 is covered with a liquid-permeable core wrap sheet 12 from both the skin side and the non-skin side in the thickness direction (FIG. 2B).
  • suitable materials for the core wrap sheet 12 include tissue paper and non-woven fabric.
  • the core wrap sheet 12 is not an essential component.
  • the top sheet 21 is a flexible and liquid-permeable rectangular sheet that covers the absorbent core 11 from the skin side (FIG. 1, FIG. 2B and FIG. 2C).
  • the top sheet 21 covers the core wrap sheet 12 from the skin side while a hot melt adhesive or the like is applied to the core wrap sheet 12. It is fixed by.
  • the top sheet 21 has substantially the same size as the absorbent core 11 in the width direction, and pops out from both sides of the absorbent core 11 in the longitudinal direction so as to cover substantially the entire skin side of the absorbent core 11. It has a size.
  • the top sheet 21 is provided over the entire length of the disposable diaper 1 in the longitudinal direction (FIG.
  • top sheet 21 constitutes a first solid gather 41 g 1 (details will be described later).
  • the leak-barrier sheet 30 is a flexible and liquid-impermeable rectangular sheet which covers the absorbent core 11 from the non-skin side (FIGS. 1, 2B and 2C).
  • the leakproof sheet 30 in the present embodiment is fixed to the core wrap sheet 12 with a hot melt adhesive or the like while covering the core wrap sheet 12 from the non-skin side.
  • the leak-barrier sheet 30 has planar dimensions such that it projects from both sides in the width direction and both sides in the longitudinal direction from the absorbent core 11 so as to cover substantially the entire non-skin side of the absorbent core 11.
  • the leak-barrier sheet 30 is provided over the entire length of the disposable diaper 1 in the longitudinal direction (FIG. 1).
  • the part of the leak-barrier sheet 30 that protrudes from the absorbent core 11 and the core wrap sheet 12 in the longitudinal direction or the width direction is fixed to the top sheet 21 or the three-dimensional gather sheet 47 with a hot melt adhesive or the like.
  • a suitable material for the leakproof sheet 30 can be exemplified by a polyethylene film, it is not limited thereto as long as it has liquid impermeability and flexibility.
  • the exterior sheet 31 is a sheet that forms the exterior of the disposable diaper 1 (FIG. 1, FIG. 2B and FIG. 2C).
  • the exterior sheet 31 covers the non-skin side of the leakproof sheet 30 and is fixed to the same side with a hot melt adhesive or the like.
  • the exterior sheet 31 in the present embodiment has an outer shape of the disposable diaper 1. Therefore, the planar shape of the exterior sheet 31 is substantially hourglass-shaped (FIG. 1). And the exterior sheet 31 protrudes from the leak-proof sheet 30 to both sides in the width direction. The popped out portion is fixed to the three-dimensional gather sheet 47 by a hot melt adhesive or the like.
  • the exterior sheet 31 can be exemplified by an SMS (spunbond-meltblown-spunbond) non-woven fabric, it is not limited thereto as long as it has flexibility.
  • SMS spunbond-meltblown-spunbond
  • the leakproof sheet 30 can be omitted.
  • first solid gather 41g1 the solid gather located inside in the width direction
  • second solid gather 41 g 2 The solid gather located at the outer side in the width direction than 41 g 1 is referred to as “second solid gather 41 g 2”.
  • the first solid gather 41g1 is formed by folding back the end 21ew in the width direction of the top sheet 21 inward in the width direction. That is, the end 21 ew (folded back portion) is the first rising portion 41 s 1.
  • the first standing portion 41s1 can stand on the skin side in the thickness direction with the folding line L relating to the folding as a fulcrum. Further, the portion of the folding line L related to the folding is the first base end 41k1 which can not stand up.
  • the first base end 41k1 and the first upright portion 41s1 are provided side by side in the width direction.
  • one thread rubber of 940 DTEX is natural in the longitudinal direction as an elastic member 451 for the first three-dimensional gather along the longitudinal direction. It is fixed by a hot melt adhesive or the like in a stretched state twice as long as the length.
  • a contraction force is applied to the first standing portion 41s1 in the longitudinal direction by the thread rubber.
  • the first standing portion 41s1 contracts in the longitudinal direction based on the contraction force, the first standing portion 41s1 stands on the skin side in the thickness direction while forming a plurality of wrinkles, and as a first solid gather 41g1. It functions (FIG. 2B).
  • the first three-dimensional gather elastic member 451 is provided on the inner side in the longitudinal direction than the end 1kaeL on the ventral side and the end 1kbeL on the back side.
  • the magnitude of the contraction force of the first solid gather elastic member 451 is set, for example, as follows. First, the total length dimension in the longitudinal direction of the first upright portion 41s1 before the first solid gather elastic member 451 is provided (in a state without wrinkles) is defined as a reference length of 100%. When the first erected portion 41s1 provided with the first solid gather elastic member 451 and stretched in the longitudinal direction is extended to 93% in the longitudinal direction, the first solid gather elastic member 451 is 0.5N to 2N.
  • the extension state of the first solid gather elastic member 451 at the time of fixing to the first upright portion 41s1 is determined so that the contraction force of For example, in this example, one thread rubber of 940 DTEX is used. Therefore, by setting the stretched state of the single thread rubber in the longitudinal direction to twice the natural length and fixing it to the first upright portion 41s1, the magnitude of the shrinkage force of the thread rubber at 93% stretch is 0. .5N to 2N.
  • the respective end portions 41s1eLa, 41s1eLb in the longitudinal direction of the first standing portion 41s1 are the top sheet 21 (main body portion 1k)
  • the first fixing portions 42a1 and 42b1 fixed in a state of being superimposed on each other are formed in a band shape along the longitudinal direction. That is, a first fixing portion is formed between the portion corresponding to the first fixing portions 42a1 and 42b1 at the end portions 41s1eLa and 41s1eLb and the portion of the top sheet 21 inward in the width direction than the folding line L.
  • Hot melt adhesive etc. are provided in the strip
  • Hot melt adhesive etc. are provided in the strip
  • the innermost portion 42b1p which is the innermost portion in the longitudinal direction of the first fixed portion 42b1 located in the back side 1b is a waist elastic member 71 and an absorbent core 11 in the main body 1k. Is located in the nonexistent portion 1 kbn (indicated by a dot pattern in FIG. 4).
  • the nonexistent portion 1 kbn is a region between the back end 1 kbe L (longitudinal waist elastic member 71) and the absorbent core 11, and has lower rigidity than other regions. .
  • the back end 1kbeL is a region located on the outer side in the longitudinal direction with the position of the waist elastic member 71 located on the innermost side in the longitudinal direction in the main body 1k as a starting end.
  • the longitudinal dimension of the back end 1 kbe L is selected, for example, in the range of 20 mm to 40 mm in the unfolded state of the disposable diaper 1 as shown in FIG.
  • the contraction force of the first solid gather elastic member 451 related to the first rising portion 41s1 is input to the innermost portion 42b1p of the first fixing portion 42b1 in the form of a tensile force F directed inward in the longitudinal direction. Therefore, as shown in FIG. 5, the main body 1k is pulled inward in the longitudinal direction via the innermost portion 42b1p. Therefore, the main body portion 1k is bent in a substantially Z-shaped cross section in the nonexistent portion 1kbn while suppressing the rising of the back end 1kbeL, and between the back end 1kbeL and the absorbent core 11 A pocket-like space SP can be formed at the position.
  • “rising of the back end 1 kbe L” refers to a state in which the back end 1 kbe L rises relative to the main body 1 k.
  • the back end 1kbeL is raised to the right side of the drawing with respect to the main body 1k.
  • the innermost portion 42 b 1 p is located inside the central position C 1 kbn L in the longitudinal direction in the nonexistent portion 1 kbn. Therefore, since the pulling force F directed inward in the longitudinal direction can be input to a position further away from the back end 1kbeL, the rising of the back end 1kbeL can be further suppressed, and the mounting can be performed. Sometimes the back end 1kbeL is less likely to bend inwards, and the face shape can be maintained so that it can fit on the wearer's back.
  • the first fixing portion 42 b 1 is formed at a position inside the widthwise central position C 41 sw in the width direction of the first rising portion 41 s 1.
  • the first fixed portion 42b1 may be formed outside the central position C41sw in the width direction.
  • two auxiliary fixing portions 43b are provided side by side in the width direction at a position between the first fixing portion 42b1 and the first base end 41k1 in the width direction (FIG. 4).
  • the auxiliary fixing portion 43b assists the fixation by the first fixing portion 42b1.
  • the auxiliary fixing portion 43b crushes the gap between the first rising portion 41s1 and the back end 1kbeL (top sheet 21) which can occur at the position between the first fixing portion 42b1 and the first base end 41k1. Function to prevent urine leakage from the region 41seLb.
  • the auxiliary fixing portion 43b is not an essential component.
  • the auxiliary fixing portion 43 b is formed of a hot melt adhesive or the like. That is, a hot melt adhesive or the like is interposed in a strip shape along the longitudinal direction between the first standing portion 41s1 and the back end 1kbeL (top sheet 21). As a result, the first upright portion 41s1 and the back end 1kbeL (top sheet 21) are also fixed at a position between the first fixing portion 42b1 and the first base end 41k1 in the width direction.
  • the dimension in the width direction of the auxiliary fixing portion 43b in the present embodiment is smaller than the dimension in the width direction of the first fixing portion 42b1, and the innermost portion in the longitudinal direction of the auxiliary fixing portion 43b is the most
  • the longitudinal position of the inner portion 43bp is substantially the same as the position of the innermost portion 42b1p of the first fixing portion 42b1, but is not limited thereto. That is, the dimension in the width direction of the auxiliary fixing portion 43b may be larger than that of the first fixing portion 42b1.
  • the position of the innermost portion 43bp of the auxiliary fixing portion 43b in the longitudinal direction may be outside or inside the position of the innermost portion 42b1p of the first fixing portion 42b1 in the longitudinal direction.
  • the innermost portion 43 bp of the auxiliary fixing portion 43 b be located in the nonexistent portion 1 kbn.
  • the second solid gather 41 g 2 is formed of a solid gather sheet 47 which is a separate member from the top sheet 21.
  • the three-dimensional gather sheet 47 is provided to cover the first base end 41k1 from the skin side in the thickness direction while being disposed so as to straddle the first base end 41k1 pertaining to the first solid gather 41g1 in the width direction.
  • the three-dimensional gathers sheet 47 is fixed to the top sheet 21 at the first base end 41k1 or in the vicinity thereof with a hot melt adhesive or the like, and the fixed part becomes the second base end 41k2 which can not stand up. There is.
  • a portion of the three-dimensional gather sheet 47 that is folded back to the outside in the width direction than the second base end 41k2 is a second rising portion 41s2 that can stand up using the second base end 41k2 as a fulcrum.
  • a single thread rubber of 940 DTEX extends twice the natural length in the longitudinal direction as a second solid gather elastic member 452 along the longitudinal direction. It is fixed by a hot melt adhesive etc. in the state. Therefore, a contraction force is applied to the second standing portion 41s2 in the longitudinal direction, and the second standing portion 41s2 contracts a plurality of wrinkles by the second standing portion 41s2 contracting in the longitudinal direction based on the contraction force.
  • the second three-dimensional gather elastic member 452 is provided on the inner side in the longitudinal direction than the end 1kaeL on the ventral side and the end 1kbeL on the back side.
  • a suitable non-woven fabric can be exemplified as a suitable material for the three-dimensional gather sheet 47, and although an SMS non-woven fabric is used here, it is not limited thereto as long as it has flexibility.
  • the three-dimensional gather sheet 47 extends to the outer side in the width direction to almost the same position as the outer edge 31ew of the exterior sheet 31, and the outer edge It is adhered to the exterior sheet 31 with a hot melt adhesive or the like at or near 31 ew.
  • the three-dimensional gather sheet 47 and the exterior sheet 31 cooperate with each other to form a ventral side flap 1asf at the ventral side 1a and a dorsal side flap 1bsf at the dorsal side 1b.
  • the three-dimensional gather sheet 47 and the exterior sheet 31 are similarly bonded and integrated by the hot melt adhesive or the like at the outer edge 31 ew or in the vicinity thereof.
  • the leg flap 1 mf is formed over a predetermined range inward in the width direction from the outer edge 31 ew.
  • the leg flap 1 mf is a portion (portion covering the periphery of the leg of the wearer) which becomes the leg-surrounding opening HL in the mounted state.
  • a plurality of thread rubbers extending in the longitudinal direction as the leg elastics 81 is a hot melt adhesive etc. It is fixed by.
  • the leg flaps 1mf contract in the longitudinal direction to form a plurality of creases, and the creases function as leg gathers.
  • the second standing portion 41s2 is in the state of an open position where the second base end portion 41k2 or its vicinity is folded back to the outside in the width direction. It has become.
  • second fixing portions 42a2 and 42b2 are provided at the respective end portions 41s2eLa and 41s2eLb of the second standing portion 41s2 in the longitudinal direction and the end portions are fixed in a state of overlapping with the main body portion 1k , And in the form of a strip along the longitudinal direction (FIG. 1, FIG. 2A, and FIG. 2C).
  • the second fixing portions 42a2 and 42b2 are formed of a hot melt adhesive or the like.
  • the second erected portion 41s2 folded back to the outside in the width direction is a portion 47p outside the width direction of the second base end 41k2 in the solid gathers sheet 47.
  • the outer portion 47p is fixed to the main body 1k with a hot melt adhesive or the like and is a part of the main body 1k.
  • the second upright portion 41s2 is overlapped with the portion 47p of such a three-dimensional gather sheet 47 in the state of being folded back to the outside in the width direction.
  • a hot melt adhesive or the like as the second fixing portions 42a2 and 42b2 is interposed between the second standing portion 41s2 in the stacked state and the portion 47p of the three-dimensional gather sheet 47.
  • the second rising portions 41s2 and the portions 47p are fixed at the respective end portions 41s2eLa and 41s2eLb in the longitudinal direction by a hot melt adhesive or the like.
  • the innermost portion 42b2p which is the innermost portion in the longitudinal direction, of the second fixing portion 42b2 located in the back side 1b also has a nonexistent portion 1 kbn (dot pattern in FIG. It is desirable to be located in).
  • the contraction force of the second solid gather elastic member 452 related to the second rising portion 41s2 is input to the innermost portion 42bp2 in the form of a tensile force F2 directed inward in the longitudinal direction. Therefore, it can contribute to formation of pocket-like space SP (FIG. 5) in the position between back end 1kbeL and absorptive core 11, controlling rising of back end 1kbeL. .
  • the magnitude of the contraction force of the second solid gather elastic member 452 is set, for example, by the same method as the first solid gather elastic member 451.
  • the innermost portion 42 b 2 p of the second fixed portion 42 b 2 is located inward in the longitudinal direction and the outer side in the width direction than the innermost portion 42 b 1 p of the first fixed portion 42 b 1.
  • the innermost portion 42b2p and the innermost portion 42b1p can each ride on a substantially arc-shaped curve that bulges outward in the longitudinal direction.
  • the innermost portion 42b2p and the innermost portion 42b1p form the pocket-like space SP into a substantially arc shape in plan view by bending the main body portion 1k into a substantially Z shape in a sectional view at each position Can. And as a result, the fit to the buttocks generally having a substantially arc shape can be improved, and urine leakage can be prevented more effectively.
  • the magnitude of the contraction force applied from the second solid gather elastic member 452 to the second upright portion 41s2 is the first solid gather elastic member 451 to the first It is desirable to be larger than the magnitude of the contraction force applied to the rising portion 41s1. That is, the magnitude of the contraction force generated in the elastic member 452 for the second three-dimensional gather at the time of 93% elongation of the second standing portion 41s2 is the elastic member for the first three-dimensional gather at the time of 93% elongation of the first standing portion 41s1. It is preferable that the magnitude of the contraction force generated at 451 be larger.
  • a tensile force F2 larger than the tensile force F directed inward in the longitudinal direction input to the innermost portion 42b1p is input to the innermost portion 42b2p.
  • the innermost portion 42b2p is pulled and moved inward in the longitudinal direction more than the innermost portion 42b1p.
  • the innermost portion 42b2p is located outside in the width direction and longitudinally inward than the innermost portion 42b1p. Therefore, according to the magnitude relationship between the tensile forces F and F2 (F ⁇ F2), the central portion in the width direction in the space SP is urged to be in a substantially arc shape projecting further outward in the longitudinal direction. As a result, the magnitude relation effectively contributes to making the space SP conform to the shape of the buttocks.
  • the fastening tape 61 is each provided in the outer edge part of the width direction in a pair of back side side flaps 1bsf, as shown to FIG. 1 and FIG. 2A.
  • a flexible substantially rectangular sheet is used as the tape base material 61a, one end in the width direction of the tape base 61a is fixed to the outer end of the back side flap 1bsf, and the other end is the back side flap 1bsf It protrudes to the outside in the width direction than the outer end of. At the other end, it protrudes further outward in the width direction at two portions in the longitudinal direction, and one male member 61m of the surface fastener is fixed to the skin side surface of the two protruding portions 61ap. There is.
  • a plurality of locking projections are provided on the skin side surface of the male member 61m.
  • any known fastener as a hook-and-loop fastener (for example, a hook-like or T-shaped locking projection) can be used as appropriate.
  • the material suitable for the tape base material 61a can illustrate flexible sheet materials, such as a nonwoven fabric, it is not restricted to this.
  • the target tape 65 is provided in the non-skin side of the exterior sheet 31 which is the non-skin side of the belly side 1a, as shown to FIG. 1 and FIG. 2C.
  • the target tape 65 has a substantially rectangular shape elongated in the width direction, and is fixed to the exterior sheet 31 by a hot melt adhesive or the like while aligning the center positions in the width direction with the exterior sheet 31.
  • suitable materials for the target tape 65 include, but are not limited to, a film in which a female material is disposed, an air through non-woven fabric, and the like.
  • the waist elastic member 71 applies a contraction force in the width direction to the back end 1kbeL so that the waist opening HB in the back side 1b can be expanded and contracted in the width direction, as shown in FIG. It is a member.
  • the dimension in the width direction of the waist elastic member 71 provided at the back end 1kbeL is selected, for example, from 180 mm to 220 mm in the unfolded state.
  • a plurality of thread-like elastic members extending in the width direction as the waist elastic member 71 are provided side by side in the longitudinal direction.
  • the thread-like elastic member five 940 DTEX thread rubbers 71a to 71e are arranged to extend along the width direction.
  • Each thread rubber is at least one sheet (top sheet 21 or leakproof sheet 30) while being interposed between the top sheet 21 and the leakproof sheet 30 in the width direction, for example, in an extended state twice the natural length. Is fixed with a hot melt adhesive or the like. Therefore, when the stretched state is relaxed and brought into the natural state, the back end 1kbeL contracts in the width direction, and a plurality of wrinkles are formed.
  • each thread rubber can be rapidly expanded in the width direction until the wrinkles are expanded, and the waist-opening portion HB can be expanded and contracted in the width direction.
  • each end of the thread-like elastic member is fixed to at least one sheet (the top sheet 21 or the leakproof sheet 30) in a natural state by a hot melt adhesive or the like. Therefore, the waist elastic member 71 has an area that can expand and contract in the width direction (corresponding to the expansion and contraction area 72 (FIG. 6)), and also has an area that does not expand and contract at its end.
  • the contraction force of the waist elastic member 71 is set, for example, as follows. First, the total length dimension in the width direction of the back end 1 kbeL before the waist elastic member 71 is provided (in the absence of wrinkles) is defined as a reference length of 100%. Then, when the waist side elastic member 71 is provided and the back end 1kbeL contracted in the width direction is extended to 93% in the width direction, a contraction force of 2N to 8N in total is generated in the waist circumference elastic member 71, The extension state of the waist elastic member 71 at the time of fixing to the back end 1kbeL is determined.
  • five yarns at 93% elongation are set by setting the extension state of the five thread rubbers 71a to 71e in the longitudinal direction to twice the natural length and fixing it to the back end 1kbeL.
  • the sum of the magnitudes of the contraction forces of the thread rubbers 71a to 71e is stored in 2N to 8N.
  • the central portion 11ebc in the width direction is longer than the end portion 11ebe in the width direction. It has a curved shape that protrudes to the outer side (back side) of the direction (that is, the end edge 11eb is formed in an arc shape).
  • the shape of the pocket-like space SP when viewed from the skin side in the thickness direction can be formed into a curved shape. That is, since the rigidity of the absorbent core 11 is generally high, when the nonexistent portion 1 kbn is pulled by the pulling force F directed inward in the longitudinal direction, the vicinity of the back end 1kbeL (the back end The 1 kbe L and the nonexistent portion 1 kbn easily bend along the edge 11 eb at a position adjacent to the edge 11 eb of the absorbent core 11. Further, since the shape of the end edge portion 11eb is a curved shape, the vicinity of the back end portion 1kbeL can be bent along the curved shape to form the pocket-like space SP into the curved shape.
  • this curved shape is also a shape which follows the shape of a ridge portion generally having a substantially arc shape. Therefore, the pocket-like space SP can be made to go along the buttocks, and through the improvement of the fit to the buttocks, it is possible to more effectively prevent the urine leakage.
  • the size in the longitudinal direction of the nonexistent portion 1kbn adjacent to the edge 11eb is Although it changes according to the position in the width direction, it is preferable that the size in the longitudinal direction of the nonexistent portion 1 kbn be set in the following range, including this case. That is, at the position P1 kbn1 where the size in the longitudinal direction is the smallest (in FIG. 4, the central position P1 kbn1 in the width direction), for example, an arbitrary value in the range of 10 mm to 40 mm is set. In FIG.
  • the value be in the range of 20 mm to 50 mm. If set in such a range, the size of the pocket-like space SP can be made a size suitable for blocking backflow of urine. For example, if it is larger than the above range, the pocket-like space SP is easily crushed and becomes difficult to function as a weir, while if it is smaller than the above range, the height in the thickness direction of the pocket-like space SP Becomes low, and in this case it becomes difficult to function as a whistle.
  • Drawing 6 is an outline top view (plan view seen from the skin side) which expands and shows back side 1b of disposable diaper 1 concerning this embodiment in a natural state.
  • the "natural state” refers to a state in which the disposable diaper is spread naturally (a state in which no external force is applied).
  • edge part 1kbeL of the back side which the wrinkles have produced in a natural state exists
  • description of a wrinkle is abbreviate
  • the first fixing portion 42b1 and a part of the stretchable area 72 of the waist elastic member 71 overlap.
  • the stretchable area 72 is an area where the waist elastic member 71 can stretch.
  • the first fixing portion 42 b 1 is present on the outer side (back side) in the longitudinal direction than the absorbent core 11.
  • the second fixing portion 42b2 is separated from the stretchable area 72 of the waist elastic member 71 in the width direction across the first fixing portion 42b1. That is, the second fixing portion 42 b 2 does not overlap with the stretchable area 72 of the waist elastic member 71.
  • the contraction force in the expansion and contraction region 72 of the waist elastic member 71 and the elastic member for the first three-dimensional gather by overlapping the expansion and contraction region 72 of the waist elastic member 71 and the first fixing portion 42b1 of the first solid gather 41g1.
  • the contraction force by 451 interlocks at the first fixing portion 42b1, and the waist elastic member 71 and the first solid gather elastic member 451 contract continuously.
  • the second fixing portion 42b2 is separated in the width direction from the stretchable area 72 of the waist elastic member 71 with the first fixing portion 42b1 in between, the contraction force of the waist elastic member 71 and the elastic member for the second solid gather It is not linked with the contraction force of 452.
  • the contraction force of the waist elastic member 71 and the contraction force by the second solid gather elastic member 452 are also interlocked.
  • the second fixing portion 42b2 also contracts.
  • not only the elastic region 72 of the waist elastic member 71 and the first fixing portion 42b1 but also the second fixing portion 42b2 is contracted in the width direction, and the entire back end is pulled longitudinally inward.
  • a spine is formed at the back end, or the back side flap 1bsf is pulled inward in the width direction to get under the user's body and the wearing property is reduced. I will.
  • the contraction force of the waist elastic member 71 and the contraction force of the second solid gather elastic member 452 are not interlocked with each other. Therefore, it is possible to provide a region in which contraction in the width direction is less likely to occur in the second fixed portion 42b2.
  • the material which is difficult to shrink extends the material substantially, and it is difficult to form wrinkles outside in the width direction from this region, and further, only in the central region on the back side by the shrinking force of the first solid gather elastic member 451 longitudinally inside Since it is in the form of sinking, the center in the width direction can be more easily determined with reference to the hard-to-shrink regions on both the left and right sides.
  • the back side flaps 1bsf do not easily enter under the body and are easily pulled outward in the width direction, it is possible to wear the disposable diaper 1 by extending wrinkles and flaps formed under the user's body So the fit to the body also improves. In addition, it becomes easy to insert the pad when using the absorbent pad as the auxiliary absorption in combination by extending the wrinkles and bumps.
  • the second fixing portion 42 b 2 is present outside the absorbent core 11 in the longitudinal direction.
  • the second fixed portion 42b2 can be formed closer to the end in the longitudinal direction.
  • the second fixing portion 42b2 although it is possible to provide a region in which shrinkage in the width direction is not likely to occur, by providing a region in which shrinkage in the width direction is not likely to occur, in the width direction It makes it easy to see the center of
  • the elastic region 72 of the rigid waist elastic member 71 maintains the surface shape, so the longitudinal cross section becomes a Z shape and the nonexistent portion 1 kbn
  • the pocket-like space SP is formed on the back side, since the pocket-like space SP can be further enlarged by the above configuration, leakage on the back side can be prevented.
  • the shape of the longitudinal edge 11eb of the absorbent core 11 has a curved shape in which the central portion in the width direction protrudes outward in the longitudinal direction more than the portion on the end in the width direction. ing.
  • the contraction force of the waist elastic member 71 and the contraction force of the first solid gather elastic member 451 interlock with each other.
  • the waist elastic member 71 and the first upright portion 41s1 contract along the curved shape. Therefore, the central portion in the width direction can be easily determined based on the shape contracted along the curved shape.
  • the innermost portion 42b2p of the second fixed portion 42b2 may not be located in the nonexistent portion 1 kbn.
  • the innermost portion 42b2p may be located longitudinally inward of the nonexistent portion 1 kbn.
  • the innermost portion 42 b 2 p is located at the back end edge 11 eb of the absorbent core 11. Even in this case, since the innermost portion 42b2p is located near the nonexistent portion 1 kbn, it can contribute to the formation of the pocket-like space SP.
  • a flexible sheet-like member 73 such as a nonwoven fabric or a film is provided to cover the waist elastic member 71 from one side or both sides of the skin side and non skin side in the thickness direction. Also good.
  • the first solid gather elastic member 451 when the first solid gather elastic member 451 extends across the nonexistent portion 1 kbn and the back end 1 kbe L, the first solid gather elastic member 451. Among them, it is desirable that longitudinal contraction force is not generated in the portion 451p1 located at the back end 1kbeL. Furthermore, it is desirable that the contraction force not be generated similarly for the portion 451p2 located in the nonexistent portion 1 kbn of the first solid gather elastic member 451. In addition to the above, it is desirable that the first three-dimensional gather elastic member 451 have a portion in which the contraction force is not generated inside in the longitudinal direction starting from the position of the innermost portion 42b1p of the first fixed portion 42b1. According to each of these configurations, the rising of the back end 1 kbeL can be more effectively suppressed.
  • the innermost portion 42b1p of the first fixing portion 42b1 is the core of the nonexistent portion 1kbn. It is desirable that the wrap sheet 12 be located in a portion where it does not exist. In this case, the innermost portion 42b1p is located at a portion where the core wrap sheet 12 is not present, that is, where the bending stiffness is further reduced.
  • a pocket-like space SP can be more reliably formed in 1 kbn.
  • the embodiment (the first fixing portion 42a1 formed at the belly-side end 1kaeL of the body 1k) The same device as the first fixing portion 42b1) may be applied.
  • first solid gather elastic member 451 (second solid gather elastic member 452)
  • a plain rubber, a band-like elastic film, a stretchable non-woven fabric, or the like may be used instead of the thread rubber.
  • the first three-dimensional gather elastic member 451 (second The solid gather elastic member 452) can be omitted.
  • the first solid gather 41g1 (the first upright portion 41s1) is formed using the end portions 21ew and 21ew in the width direction of the top sheet 21, but the configuration of the first solid gather 41g1 is the same as that of the first solid gather 41g1.
  • the first standing portion 41s1 of the first solid gather 41g1 may be formed of a dedicated solid gather sheet (as it is a known configuration, a detailed description will be given) Is omitted).
  • the disposable diaper 1 can be used in combination with another absorbent pad (not shown) such as a urine absorbing pad.
  • the urine absorption pad is used by placing it on the skin side of the top sheet 21 of the disposable diaper 1. At that time, it is preferable to insert and hold the longitudinal end of the urine absorption pad in the pocket-like space SP. In this way, when the urine absorbing pad is placed on the skin side of the top sheet 21, it becomes easy to position. In addition, since the end of the urine absorbing pad is inserted into the pocket-like space SP, the urine placed on the skin side of the top sheet 21 when laying the disposable diaper 1 under the wearer's body The end of the pad does not hit the wearer's skin.
  • the center of the width direction of a disposable diaper and the center in the width direction of an absorptive pad are made into a mark by using the end part vicinity of the back side formed in the shape near a circular arc. Alignment becomes easy.
  • the waist elastic member includes a plurality of thread-like elastic members extending in the width direction, and the fixed end located on the innermost side in the longitudinal direction of the first fixing portion is located in the non-existing portion, the first fixing portion At least a part of the plurality of thread-like elastic members, provided in a region between the innermost thread-like elastic member in the longitudinal direction and the outermost thread-like elastic member. It may be a sex item.
  • the absorbent article is characterized in that the first fixing portion is provided over the entire region sandwiched between the innermost thread-like elastic member and the outermost thread-like elastic member in the longitudinal direction. It is also good.
  • the spine end portion is a region located outside the outermost thread-like elastic member in the longitudinal direction, which is a region that contracts with contraction of the thread-like elastic member, and between adjacent thread-like elastic members
  • the absorbent article may be characterized in that a contraction area longer in the longitudinal direction than the interval of.
  • the longitudinal length of the contraction area is longer than half of the longitudinal length of the area sandwiched by the outermost thread elastic member and the inner thread elastic member. It may be an absorbent article.
  • FIG. 10 is a view for explaining the positional relationship between the male member 61 m (engaging portion) of the fastening tape 61 and the nonexistent portion 1 kbn.
  • FIG. 11 is a schematic plan view of the unfolded body of the disposable diaper 1.
  • FIG. 12 is a longitudinal sectional view of the diaper 1 in a state of being folded in three. As apparent from FIGS. 10 to 12, the following mode may be adopted.
  • a back side flap is formed on the back side of the main body to extend outward in the width direction from the main body, and a pair of fastening tapes are provided on both sides in the width direction of the back side flap
  • the pair of fastening tapes each have an engaging portion that engages with the ventral side when the absorbent article is worn, and the longitudinal direction at a predetermined position in the width direction of the engaging portion
  • a central line connecting the central positions of the pair of engaging portions along the width direction is the nonexistent portion at the central portion in the width direction of the absorbent article.
  • the absorbent article may be characterized in that the inner end portion in the longitudinal direction of the first fixed portion is present in the longitudinal direction outside the position where the central line passes.
  • the absorbent article may be characterized in that a straight line passing through passes through a portion of the main body portion where the waist elastic member is disposed.
  • the absorbent article may be characterized in that the straight line connecting passes through a portion of the main body portion where the absorbent core is disposed.
  • the pair of fastening tapes have the engaging portions at a plurality of positions in the longitudinal direction, and the central line is in the longitudinal direction among the plurality of the engaging portions provided in the longitudinal direction.
  • the absorbent article may be characterized in that it passes through the central position defined for the engaging portion closest to the position where the waist elastic member is disposed.
  • the back side flap and the fastening tape are configured by different members, and the fastening tape is joined to the widthwise outer end of the back side flap. It may be an article.
  • a fold line serving as a base point when the absorbent article is folded in the longitudinal direction is provided with a plurality of folds along the width direction, and a region in which a plurality of folds are formed
  • the absorbent article may be characterized in that the rigidity is lower than the area of
  • the absorbent core 11 may be provided with a low basis weight area such as a slit.
  • slits S1a to S1c are formed in the central region in the width direction of the absorbent core 11.
  • the slit S1a is formed on the ventral side 1a.
  • the slit S1b is formed in the crotch 1 m.
  • the slit S1c is formed in the back side 1b.
  • Slits S2a to S2c and slits S3a to S3c are formed outside the central region in the width direction.
  • the slit S2a and the slit S3a are formed to sandwich the slit S1a in the abdominal side portion 1a.
  • Slit S2b and slit S3b are formed so that slit S1b may be pinched
  • the slit S2c and the slit S3c are formed on the back side 1b so as to sandwich the slit S1c.
  • Each slit has a lower basis weight than the other regions of the absorbent core 11. That is, at least the central region in the width direction of the absorbent core 11 is formed to have a basis weight lower than the other regions of the absorbent core 11.
  • the central region (a part of the central region) in the width direction of the absorbent core 11 in a slit shape and having a low basis weight, wrinkles easily enter the low basis weight, and the core existing region Since the color difference occurs in the non-existing area, the area can be used as a mark when the diaper 1 (absorbent pad) is worn.
  • the apex of the back end 1kbeL formed in an arc shape is located substantially on the extension of the central region, the center in the width direction of the back end 1kbeL can be easily understood. Accordingly, alignment between the center in the width direction of the diaper 1 and the center of the body of the wearer (or the center in the width direction of the absorbent pad) becomes easier.
  • the absorber when the pad is attached, if the disposable diaper is attached from the outside after fitting the absorbent pad to the body, the absorber is easily bent in the longitudinal direction with the slit as a base point. Can be pressed firmly against the body. Further, by making the basis weight of the absorbent core 11 larger than that of the central region toward the side in the width direction, the position of the absorbent pad does not easily shift, and cracking or the like of the absorbent core can be prevented even in the manufacturing process.
  • the diaper 1 before use is in a state of being folded in three in the longitudinal direction.
  • the diaper 1 is provided with three fold lines of a first fold line F1 to a third fold line F3.
  • the first fold line F1 is formed to pass through the region of the nonexistent portion 1 kbn along the width direction.
  • the second fold line F2 is formed to pass through the region between the slit S1c and the slit S1b in the longitudinal direction along the width direction.
  • the third fold line F3 is formed to pass through the region between the slit S1b and the slit S1a in the longitudinal direction along the width direction.
  • the non-existence portion 1 kbn in which the first fold line F1 is formed has low rigidity as described above.
  • the second fold line F2 and the third fold line F3 are formed in a smooth area without the slits S1a to S1c, the resistance at the time of bending in the longitudinal direction is small. Therefore, it becomes easy to fold diaper 1 to a longitudinal direction by making these folds into a starting point.
  • the diaper 1 When the diaper 1 is folded in three, first, the back end 1 kbe L of the diaper 1 in the unfolded state is folded to the non-skin side in the thickness direction with the first fold F 1 as a base point. Next, with the second fold line F2 as a base point, the portion of the back side portion 1b of the main body portion 1k is folded so as to face the portion of the crotch 1m and the skin side surface in the thickness direction. Next, it folds so that a part of skin surface side of belly side part 1a of body part 1k may overlap on the non-skin surface side of back side part 1b of body part 1k on the basis of 3rd fold F3. By doing so, the diaper 1 can be folded in a compact state as shown in FIG.
  • the first fold line F1 is formed to pass through the non-existence portion 1 kbn area, so the non-existence portion with low rigidity is easily creased. As a result, when the diaper 1 is put in the wearing state, the pocket-like space SP can be easily formed.
  • a main body having a longitudinal direction, a width direction, and a thickness direction is an absorbent core that absorbs liquid, a top sheet that covers the absorbent core from the skin side in the thickness direction, and the thickness of the absorbent core
  • An absorbent article comprising: a back sheet that covers from the non-skin side of the longitudinal direction, The end in the longitudinal direction of the main body constitutes a waist opening, and a waist elastic member along the width direction in the end to apply contraction force in the width direction to the end.
  • the absorbent core is present in a portion in the longitudinal direction in the main body portion more than the end portion, and a portion between the end portion and the absorbent core in the main body portion is the same.
  • the waist elastic member and the absorbent core are both absent in the absence of the elastic core,
  • a sheet-like solid gatherer is provided along the longitudinal direction at a predetermined position in the width direction,
  • the three-dimensional gather has a base end portion which can not stand and a standing portion which can stand on the skin side in the thickness direction with the base end portion as a fulcrum, and acts on the standing portion.
  • 1 Disposable diapers (absorbent articles), 1k body, 1kbeL dorsal end, 1 kbn nonexistent part, 11 absorbent core, 12 core wrap sheets, 21 top sheet (front sheet), 30 leak-proof sheet, 31 exterior sheet (back sheet), 41g1 first solid gather, 41g2 second solid gather, 41k1 first base end, 41k2 second base end, 41s1 first standing part, 41s2 second standing part, 42b1 first fixing portion, 42b1p innermost portion, 42b2 second fixed portion, 42b2p innermost portion, 43b Auxiliary fixed part, 43 bp innermost part, 47 three-dimensional gather sheet, 61 Fastening tape, 65 target tape, 71 waist elastic members, 72 stretchable area, SP pocket space, F pull force, F2 pull force,

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  • Absorbent Articles And Supports Therefor (AREA)

Abstract

　La présente invention a pour but de permettre de jauger plus facilement le centre dans le sens de la largeur d'un produit absorbant. Le corps principal (1k) d'un produit absorbant (1) comporte une paire de premières fronces verticales (41g1) disposées à distance l'une de l'autre dans le sens de la largeur et s'étendant dans le sens de la longueur, et une paire de secondes fronces verticales (41g2) agencées sur la partie extérieure dans le sens de la largeur à partir des premières fronces verticales (41g1) et s'étendant dans le sens de la longueur. Des premières parties fixées (42b1) au niveau desquelles les premières fronces verticales (41g1) sont fixées dans un état superposé au corps principal (1k) sont formées au niveau des extrémités côté arrière de premières parties verticales (41s1) des premières fronces verticales (41g1), et des secondes parties fixées (42b2) au niveau desquelles les secondes fronces verticales (41g2) sont fixées dans un état superposé au corps principal (1k) sont formées au niveau des extrémités côté arrière de secondes parties verticales (41s2) des secondes fronces verticales (41g2). Les premières parties fixées (42b1) et une zone d'étirement d'éléments élastiques de taille (71) se chevauchent, et les premières parties fixées (42b1) sont présentes plus à l'extérieur dans le sens de la longueur que l'est un noyau absorbant (11), tandis que les secondes parties fixées (42b2) sont disposées de manière espacée, dans le sens de la largeur, de la zone d'étirement des éléments élastiques de taille (71), avec les première parties fixées (42b1) interposées entre elles.
PCT/JP2015/067404 2014-06-27 2015-06-17 Produit absorbant Ceased WO2015198928A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014-132244 2014-06-27
JP2014132244A JP5648143B1 (ja) 2014-06-27 2014-06-27 吸収性物品
JP2014-156884 2014-07-31
JP2014156884A JP5651800B1 (ja) 2014-07-31 2014-07-31 吸収性物品

Publications (1)

Publication Number Publication Date
WO2015198928A1 true WO2015198928A1 (fr) 2015-12-30

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PCT/JP2015/067404 Ceased WO2015198928A1 (fr) 2014-06-27 2015-06-17 Produit absorbant

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WO (1) WO2015198928A1 (fr)

Cited By (14)

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US10485710B2 (en) 2015-03-18 2019-11-26 The Procter & Gamble Company Absorbent article with leg cuffs
US10524963B2 (en) 2015-03-18 2020-01-07 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10524962B2 (en) 2015-03-18 2020-01-07 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10531990B2 (en) 2015-03-18 2020-01-14 The Procter & Gamble Company Absorbent article with leg cuffs
US10531991B2 (en) 2015-03-18 2020-01-14 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10537481B2 (en) 2015-03-18 2020-01-21 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10543131B2 (en) 2015-03-18 2020-01-28 The Procter & Gamble Company Absorbent article with leg cuffs
US10588790B2 (en) 2015-03-18 2020-03-17 The Procter & Gamble Company Absorbent article with leg cuffs
US10716716B2 (en) 2015-03-18 2020-07-21 The Procter & Gamble Company Absorbent article with leg cuffs
US10792198B2 (en) 2015-03-18 2020-10-06 The Procter & Gamble Company Absorbent article with leg cuffs
JP2021171581A (ja) * 2020-04-30 2021-11-01 ユニ・チャーム株式会社 吸収性物品
US11712377B2 (en) 2017-01-31 2023-08-01 Kimberly-Clark Worldwide, Inc. Absorbent article with pocket dividing front and rear regions
US11730636B2 (en) 2017-07-31 2023-08-22 Kimberly-Clark Worldwide, Inc. Absorbent article with bodyside liner providing a barrier region
TWI843942B (zh) * 2020-03-25 2024-06-01 日商大王製紙股份有限公司 連結型拋棄式穿著用物品

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JPH11235357A (ja) * 1998-02-23 1999-08-31 Kao Corp 使い捨ておむつ
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JP2012024418A (ja) * 2010-07-26 2012-02-09 Unicharm Corp 使い捨て吸収性物品

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JPH11235357A (ja) * 1998-02-23 1999-08-31 Kao Corp 使い捨ておむつ
JP2002272787A (ja) * 2001-03-14 2002-09-24 Livedo Corporation 使い捨ておむつカバー
JP2007532254A (ja) * 2004-04-14 2007-11-15 ザ プロクター アンド ギャンブル カンパニー バックシートから離れて間隔を置いて配置される単一使い捨て吸収性物品用二重カフ
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JP2012024418A (ja) * 2010-07-26 2012-02-09 Unicharm Corp 使い捨て吸収性物品

Cited By (34)

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US11833012B2 (en) 2015-03-18 2023-12-05 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US11458045B2 (en) 2015-03-18 2022-10-04 The Procter & Gamble Company Absorbent article with leg cuffs
US10524962B2 (en) 2015-03-18 2020-01-07 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10531990B2 (en) 2015-03-18 2020-01-14 The Procter & Gamble Company Absorbent article with leg cuffs
US10531991B2 (en) 2015-03-18 2020-01-14 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10537481B2 (en) 2015-03-18 2020-01-21 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10543131B2 (en) 2015-03-18 2020-01-28 The Procter & Gamble Company Absorbent article with leg cuffs
US10543130B2 (en) 2015-03-18 2020-01-28 The Procter & Gamble Company Absorbent article with leg cuffs
US10583049B2 (en) 2015-03-18 2020-03-10 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10588790B2 (en) 2015-03-18 2020-03-17 The Procter & Gamble Company Absorbent article with leg cuffs
US11478385B2 (en) 2015-03-18 2022-10-25 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10588791B2 (en) 2015-03-18 2020-03-17 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10603226B2 (en) 2015-03-18 2020-03-31 The Procter & Gamble Company Absorbent article with leg cuffs
US10716716B2 (en) 2015-03-18 2020-07-21 The Procter & Gamble Company Absorbent article with leg cuffs
US10792198B2 (en) 2015-03-18 2020-10-06 The Procter & Gamble Company Absorbent article with leg cuffs
US12274604B2 (en) 2015-03-18 2025-04-15 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US10524963B2 (en) 2015-03-18 2020-01-07 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US12121425B2 (en) 2015-03-18 2024-10-22 The Procter & Gamble Company Absorbent article with leg cuffs
US10588789B2 (en) 2015-03-18 2020-03-17 The Procter & Gamble Company Absorbent article with leg cuffs
US11504283B2 (en) 2015-03-18 2022-11-22 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US11504282B2 (en) 2015-03-18 2022-11-22 The Procter & Gamble Company Absorbent article with leg cuffs
US11950990B2 (en) 2015-03-18 2024-04-09 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US11938006B2 (en) 2015-03-18 2024-03-26 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US11752044B2 (en) 2015-03-18 2023-09-12 The Procter & Gamble Company Absorbent article with leg cuffs
US10485710B2 (en) 2015-03-18 2019-11-26 The Procter & Gamble Company Absorbent article with leg cuffs
US11844669B2 (en) 2015-03-18 2023-12-19 The Procter & Gamble Company Absorbent article with waist gasketing element and leg cuffs
US11712377B2 (en) 2017-01-31 2023-08-01 Kimberly-Clark Worldwide, Inc. Absorbent article with pocket dividing front and rear regions
US11969323B2 (en) 2017-01-31 2024-04-30 Kimberly-Clark Worldwide, Inc. Absorbent article with pocket dividing front and rear regions
US11730636B2 (en) 2017-07-31 2023-08-22 Kimberly-Clark Worldwide, Inc. Absorbent article with bodyside liner providing a barrier region
TWI843942B (zh) * 2020-03-25 2024-06-01 日商大王製紙股份有限公司 連結型拋棄式穿著用物品
US12303367B2 (en) 2020-03-25 2025-05-20 Daio Paper Corporation Attachable-type disposable wearing article
WO2021220520A1 (fr) * 2020-04-30 2021-11-04 ユニ・チャーム株式会社 Article absorbant
TWI876034B (zh) * 2020-04-30 2025-03-11 日商優你 嬌美股份有限公司 吸收性物品
JP2021171581A (ja) * 2020-04-30 2021-11-01 ユニ・チャーム株式会社 吸収性物品

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