WO2020004499A1 - 使い捨ておむつ - Google Patents

使い捨ておむつ Download PDF

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Publication number
WO2020004499A1
WO2020004499A1 PCT/JP2019/025468 JP2019025468W WO2020004499A1 WO 2020004499 A1 WO2020004499 A1 WO 2020004499A1 JP 2019025468 W JP2019025468 W JP 2019025468W WO 2020004499 A1 WO2020004499 A1 WO 2020004499A1
Authority
WO
WIPO (PCT)
Prior art keywords
edge
waistband
disposable diaper
region
absorbent core
Prior art date
Application number
PCT/JP2019/025468
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
尊司 松井
山中　康弘
坂口　智
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201980043999.9A priority Critical patent/CN112367951A/zh
Publication of WO2020004499A1 publication Critical patent/WO2020004499A1/ja

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • 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
    • A61F13/56—Supporting or fastening means

Definitions

  • the present invention relates to a disposable diaper having a waistband.
  • a disposable diaper having a waistband disposed in a rear waist region is known (for example, see Patent Document 1).
  • the waistband is folded toward the crotch region near the waist opening and opens toward the crotch region.
  • the waistband is fixed to the skin side sheet side on both sides, and is configured not to be able to stand. Therefore, the waistband stands on the wearer side in a region surrounded by the both-side fixing portion and the fold near the waist opening, and accommodates excrement moving to the waist opening side in the rear waistline region.
  • the rear edge of the accommodation space is close to the waist opening, and it is easy to secure the length of the accommodation space in the front-rear direction.
  • the outer edge of the accommodation space is close to the outer edge of the absorbent core.
  • a disposable diaper capable of securing a space for accommodating pockets by a waistband and suppressing occurrence of back leakage is desired.
  • a skin-side sheet positioned closer to the skin-facing surface than the absorbent core, and, in the rear waist region, a waistband positioned closer to the skin-facing surface than the skin-side sheet and stretchable in the width direction;
  • the waistband is an upright portion configured to be able to be upright with respect to the skin-side sheet, and is an upright fulcrum of the upright portion on the outer side in the width direction than the upright portion and the absorbent core.
  • a disposable diaper having a first base edge and a second base edge serving as an upright fulcrum of the upright portion on the waist opening side of the upright portion, wherein the first base in an extended state of the disposable diaper. Edge
  • the longitudinal length of the standing part in the extended state and Y satisfy S ⁇ Y.
  • FIG. 1 is a schematic plan view of the disposable diaper according to the first embodiment as viewed from the side facing the skin.
  • FIG. 2 is a schematic sectional view taken along line 2A-2A shown in FIG.
  • FIG. 3 is a schematic sectional view taken along line 3A-3A shown in FIG.
  • FIG. 4 is a schematic sectional view taken along line 4A-4A shown in FIG. 1 in an extended state.
  • FIG. 5 is a schematic sectional view taken along line 4A-4A shown in FIG. 1 in a natural state.
  • FIG. 6 is a diagram schematically illustrating a wearing state in a cross section based on FIG. 5.
  • FIG. 7 is a schematic sectional view of the disposable diaper according to the second embodiment in an extended state.
  • FIG. 8 is a schematic cross-sectional view of the disposable diaper according to the second embodiment in a natural state.
  • FIG. 9 is a schematic sectional view of a disposable diaper according to the third embodiment.
  • Disposable diaper according to one aspect, the front and rear direction and width direction orthogonal to each other, front waist area, rear waist area, and crotch area disposed between the front waist area and the rear waist area, and the absorbent core
  • a skin-side sheet positioned closer to the skin-facing surface than the absorbent core, and, in the rear waist region, a waistband positioned closer to the skin-facing surface than the skin-side sheet and stretchable in the width direction;
  • the waistband is an upright portion configured to be able to be upright with respect to the skin-side sheet, and is an upright fulcrum of the upright portion on the outer side in the width direction than the upright portion and the absorbent core.
  • a disposable diaper having a first base edge and a second base edge serving as an upright fulcrum of the upright portion on the waist opening side of the upright portion, wherein the first base in an extended state of the disposable diaper.
  • the upright portion of the waistband is configured to be able to stand up from the first base end edge and the second base end edge, and forms a storage space for storing excrement.
  • the distance between the first base edge and the absorbent core in the width direction is equal to or greater than the length of the upright portion in the front-rear direction, and the height of the accommodation space rising from the outer edge of the absorbent core rises from the second proximal edge.
  • the pocket can be formed so as to be equal to or larger than the height of the accommodation space. Therefore, the outer edge of the accommodation space is not easily raised due to the rigidity of the absorbing core, the entire accommodation space is easily raised, and the accommodation space is easily secured. It is possible to secure a space for accommodating pockets by the waistband, and to suppress occurrence of rear leakage.
  • the second base edge is located rearward of a rear edge of the absorbent core, and the rear edge of the absorbent core and the second base edge in the extended state. Assuming that the distance in the front-rear direction with U is U, S ⁇ Y + U may be satisfied.
  • the second base end may rise further toward the wearer with respect to the rear end of the absorbent core.
  • the height of the rising of the accommodation space is Y + U.
  • the height of the accommodation space by S is equal to or less than the height of the accommodation space rising by Y + U, and the height of the accommodation space rising by Y + U can be suppressed.
  • the region between the absorbent core and the second base edge is located between the upright fulcrum of the waistband and the absorbent core, has lower rigidity than both sides in the front-rear direction, and is easily deformed.
  • a front edge of the upright portion in the extended state, is located forward of a rear edge of the absorbent core, and a rear edge of the absorbent core and the upright portion in the extended state. Assuming that the distance in the front-rear direction of the front edge of V is V, V ⁇ U may be satisfied.
  • the length (V) in the front-rear direction of the region where the absorbent cores overlap in the upright portion is not less than the length (U) in the front-rear direction of the region where the absorbent cores do not overlap in the upright portion.
  • the absorbent core having higher rigidity is located on the non-skin side than in the region where the absorbent cores do not overlap, and is more easily erected on the wearer side.
  • a front edge of the upright portion in the extended state, is located forward of a rear edge of the absorbent core, and in the extended state, a front edge of the upright portion is the absorbent core.
  • the length (U) of the region where the absorbent core does not overlap in the upright portion in the front-rear direction is longer than the length (V) of the region where the absorbent core overlaps in the upright portion in the front-rear direction.
  • the length in the front-rear direction of the upright portion disposed behind the rear end edge of the absorbent core is longer than the length in the front-rear direction of the upright portion disposed forward of the rear end edge of the absorbent core. Therefore, the pocket of the waistband can be formed larger behind the rear end edge of the absorbent core. The user can understand that the pocket of the waistband is arranged to be larger on the rear side than the absorbent core, and can have a sense of security against the rear leakage.
  • a reinforcing sheet may be provided in a region between the rear end edge of the absorbent core and the second base end edge in the extended state.
  • the rigidity of the region between the rear end edge of the absorbent core and the second base end edge is increased by the reinforcing sheet, and the rigidity difference between the upright portion and the region where the absorbent core overlaps can be reduced. Therefore, the entire standing portion is easily raised.
  • the reinforcing sheet may be arranged over the entire waistband in the width direction.
  • the rigidity is enhanced by the reinforcing sheet over the entire region of the waistband in the width direction, and the upright portion is easily raised over the entire region of the waistband in the width direction.
  • the waistband has a joint extending in the front-rear direction from the second base edge and joined to the skin-side sheet, and the contraction force of the joint is The contraction force of the upright portion may be lower.
  • the joint since the contraction force of the joint is low, the joint is less likely to adhere to the body than the upright part.
  • the joint is in close contact with the body, it is possible to suppress the problem that the upright portion that does not overlap with the joint relatively moves away from the body. Therefore, it is easy to secure the adhesiveness of the standing portion to the body.
  • the waistband has a joining portion extending in the front-rear direction from the second base end edge and joined to the skin-side sheet, and the waistband has a joining portion in the front-rear direction. Assuming that the length of X is X, the above U ⁇ X may be satisfied.
  • the rear waist region When the disposable diaper is worn on a sleeping person, the rear waist region may be inserted between the wearer's body and the bedding. At this time, since the length of the joint in the front-rear direction is long, the rigidity of the joint is increased, and it is possible to suppress the bulging of the second base end edge serving as the fulcrum of the upright portion. Further, even if the second base edge is bent, the second base edge can be easily secured because the length of the joint in the front-rear direction is long. Therefore, it is easy to maintain the fulcrum of the upright portion, and it is easier to secure the space for accommodating the pocket by the waistband.
  • the waistband has a folded portion that is folded back toward the wearer side from a front end edge of the upright portion as a base point, and the contraction force of the folded portion is a contraction force of the upright portion. It may be higher than the power.
  • the contraction force of the folded portion is relatively high, the tightness of the waistband to the body can be ensured.
  • the contraction force of the upright portion is relatively low, it is possible to suppress a problem that the pocket is excessively lifted from the body due to the high contraction force of the upright portion, and it is possible to suppress a gap between the body and the pocket.
  • the length of the folded portion in the front-rear direction may be longer than the length of the upright portion in the front-rear direction.
  • a wide area where the waistband is in contact with the body is secured, the stability of the shape of the waistband is improved, and the generation of a gap between the waistband and the body can be suppressed.
  • the shrinking force per unit length can be suppressed even if the shrinking force of the folded portion is increased. Therefore, the adhesion of the waistband can be secured while suppressing the wearing pressure of the folded portion and suppressing the deterioration of the wearing feeling.
  • the skin-side sheet has a top sheet and a pair of side sheets covering both outer portions of the top sheet, and the side sheet stands up due to shrinkage of the leakproof elastic member.
  • the first base edge of the band may be located outside the leak-proof base edge of the leak-proof gather in the width direction.
  • the first base end edge of the waistband is easily subjected to a force inward in the width direction due to the contraction of the upright portion. Since the first base edge of the waistband is located outside the leakproof base edge of the leakproof gather in the width direction, the leakproof base edge is prevented from moving inward in the width direction due to the contraction of the waistband. it can. A large space can be provided between the pair of leak-proof gathers, and lateral leakage can be suppressed.
  • the vehicle has a fastening tape disposed in the rear waist region, and the waistband may overlap the fastening tape in a thickness direction.
  • the waistband when the fastening tape is pulled at the time of attachment, the waistband can be pulled in conjunction therewith. Therefore, the waistband is more easily raised and a pocket is more easily formed by the waistband.
  • FIG. 1 is a schematic plan view of the disposable diaper 10 according to the first embodiment as viewed from the skin-facing surface side.
  • FIG. 2 is a schematic cross-sectional view along the cross section 2A-2A of the disposable diaper shown in FIG.
  • FIG. 3 is a schematic sectional view taken along the section 3A-3A of the disposable diaper shown in FIG. 1 to 3 show the disposable diaper in an extended state.
  • the extended state in this invention is the state which extended the disposable diaper 10 to the state where a wrinkle is not formed.
  • the natural state in the present invention means that, in the case of the disposable diaper 10 housed in a package, the disposable diaper 10 is taken out from the package and is placed under an atmosphere of 20 ° C. ⁇ 2 ° C.
  • FIG. 4 is a schematic sectional view taken along line 4A-4A shown in FIG. 1 in an extended state.
  • FIG. 5 is a schematic sectional view taken along line 4A-4A shown in FIG. 1 in a natural state.
  • each member is shown separated in the thickness direction T, but in an actual product, it is in contact with the thickness direction T.
  • FIG. BL shows in FIG. 6 indicates a line of the body of the wearer.
  • the disposable diaper 10 has a front-rear direction L and a width direction W orthogonal to each other.
  • the front-back direction L is defined by a direction extending to the front side of the body and the rear side of the body.
  • the front-back direction L is a direction that extends back and forth in the deployed disposable diaper 10.
  • the disposable diaper 10 has a thickness direction T orthogonal to both the front-rear direction L and the width direction W.
  • the thickness direction T extends to a skin-facing surface side T1 facing the wearer and a non-skin-facing surface side T2 opposite to the skin-facing surface.
  • the disposable diaper 10 has a front waistline region S1, a rear waistline region S2, and a crotch region S3.
  • the front waistline region S1 is a region facing the wearer's front waistline (abdomen).
  • the rear waistline region S2 is a region facing the rear waistline (back) of the wearer, and includes a region where the body (buttock) is placed when worn.
  • the inseam area S3 is an area located at the inseam of the wearer and arranged between the front waist area S1 and the rear waist area S2.
  • the crotch region S3 is a region where the leg opening 65 is provided around the leg of the wearer.
  • the leg opening 65 is a portion that is recessed inward in the width direction from the outer edge of the disposable diaper.
  • the disposable diaper 10 includes an absorbent core 31 including an absorbent material.
  • the absorbent core 31 includes an absorbent material such as ground pulp or superabsorbent polymer (SAP), or a mixture thereof.
  • SAP superabsorbent polymer
  • the absorbent core 31 may be covered by a core wrap (not shown).
  • An absorbent may be constituted by the absorbent core 31 and the core wrap.
  • the core wrap is made of a tissue or an SMS nonwoven fabric, and may be arranged on the skin-facing surface side T1 of the absorbent core 31 and the non-skin-facing surface side T2 of the absorbent core 31.
  • the disposable diaper 10 has the skin-side sheet 20 located on the skin-facing surface side T1 with respect to the absorbent core 31.
  • the skin-side sheet 20 covers the absorbent core 31 and is disposed over the entire disposable diaper 10.
  • the skin side sheet 20 of the present embodiment includes a top sheet 21 and a pair of side sheets 22.
  • the skin surface side sheet 20 is a sheet located on the skin facing surface side T1 relative to the core wrap.
  • the topsheet 21 may be disposed across the center of the absorbent core 31 in the width direction W.
  • the side sheets 22 may be arranged so as to cover both outer portions of the top sheet 21.
  • the top sheet 21 and the side sheets 22 may be configured by a liquid-permeable sheet such as a nonwoven fabric or an apertured plastic film.
  • the inner portion of the side sheet 22 may be folded and overlapped.
  • a leakproof elastic member 61 that expands and contracts in the front-rear direction L may be provided between the overlapping side sheets 22.
  • the leak-proof elastic member 61 may be made of thread rubber that expands and contracts in the front-rear direction L.
  • the side sheet 22 stands on the skin-facing surface side T1 due to the contraction of the leakage prevention elastic member 61.
  • the side sheet 22 and the leakproof elastic member 61 constitute a contraction portion 63 that stands on the skin-facing surface side T1.
  • the leak-proof gather 60 includes a contracted portion 63 and a leak-proof base edge 64 that is a fulcrum of the contracted portion on the outer side in the width direction than the contracted portion 63.
  • the leak-proof base edge 64 is an inner edge of a region where the side sheet and the topsheet are joined on the outer side in the width direction than the contracted portion 63.
  • the contraction portion 63 is a portion in which the side sheet 22 is not joined to the top sheet 21 and can be contracted by the leakage prevention elastic member 61, and does not include a portion where the non-extended state of the leakage prevention elastic member 61 is arranged.
  • FIG. 1 shows the range of the contraction portion 63 in the front-rear direction.
  • the outer portion in the present invention is a portion occupying a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is an outer edge in the width direction W.
  • the inner portion is a portion occupying a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W.
  • the disposable diaper 10 has the non-skin surface sheet 25 located on the skin-facing surface side T1 with respect to the absorbent core 31.
  • the non-skin side sheet 25 covers the absorbent core 31 and is disposed over the entire disposable diaper.
  • the non-skin side sheet 25 of the present embodiment includes a back sheet 23 and an exterior sheet 24.
  • the non-skin side sheet 25 is a sheet located on the non-skin facing side T2 than the core wrap.
  • the back sheet 23 is a liquid-impermeable sheet, and a breathable resin film is bonded to a nonwoven fabric such as a polyethylene sheet, a laminated nonwoven fabric mainly made of polypropylene, a breathable resin film, a spun bond, or a spun lace.
  • the exterior sheet 24 may be provided on the non-skin-facing surface side T2 of the back sheet 23.
  • the exterior sheet 24 may be made of a liquid-permeable nonwoven fabric.
  • the length of the back sheet 23 in the width direction W is shorter than the length of the outer sheet 24 in the width direction W, and the length of the back sheet 23 in the front-rear direction L is shorter than the length of the outer sheet 24 in the front-rear direction L. Good.
  • the fastening tape 90 is provided in the rear waistline area S2.
  • the fastening tape 90 has a base portion 92 and a locking portion 93. At least a part of the base portion 92 is joined between the skin side sheet 20 and the non-skin side sheet 25 and extends outward from the skin side sheet 20 and the non-skin side sheet 25 in the width direction W. .
  • the locking portion 93 is provided on the base portion 92 and is detachably fixed to the target portion 95 (see FIG. 1).
  • the fastening tape 90 extends along the width direction W in the rear waistline region S2 and is fixed to the target portion 95, thereby holding the disposable diaper 10 on the wearer's body.
  • the target part 95 is arrange
  • the disposable diaper 10 has a waistband 80 disposed on the skin-facing surface side T1 of the skin-side sheet 20 in the rear waistline region S2.
  • the waistband 80 rises from the skin-side sheet 20 when worn, and forms a pocket that opens toward the front side.
  • the pocket accommodates excrement moving toward the waist opening 66.
  • the configuration of the waistband 80 will be described later in detail.
  • the waist opening 66 is constituted by a rear edge 10R and a front edge 10F of the disposable diaper, and is a portion surrounding the waist with the fastening tape 90 fixed to the target portion 95.
  • the disposable diaper 10 has a tape arrangement region R11 extending in the width direction from the fastening tape 90, a waist opening region R12 located behind the tape arrangement region R11, and a locking arrangement region extending in the width direction from the fixing portion 93 of the fastening tape. R13 and a waist region R14 located on the rear side of the locking arrangement region R13.
  • FIG. 1 shows the range in the front-rear direction L of each of the regions R11 to R14.
  • the tape placement region R11 is a region between the front edge 90F and the rear edge 90R of the fastening tape in the front-rear direction L.
  • the front edge of the tape placement area R11 matches the front edge 90F of the fastening tape 90
  • the rear edge of the tape placement area R11 matches the rear edge 90R of the fastening tape 90
  • the waist opening region R12 is a region between the rear edge 90R of the fastening tape 90 and the rear edge 10R of the disposable diaper 10 in the front-rear direction L. Therefore, the front edge of the waist opening region R12 matches the rear edge 90R of the fastening tape, and the rear edge of the waist opening region R12 matches the rear edge 10R of the disposable diaper 10.
  • the locking arrangement region R13 is a region between the front edge 93F and the rear edge 93R of the locking portion 93 in the front-rear direction L.
  • the front edge of the locking arrangement region R13 matches the front edge 93F of the locking portion 93
  • the rear edge of the locking arrangement region R13 matches the rear edge 93R of the locking portion 93
  • the waist region R14 is a region between the rear edge 93R of the locking portion 93 and the rear edge 10R of the disposable diaper 10 in the front-rear direction L. Therefore, the front edge of the waist region R14 coincides with the rear edge 93R of the locking portion 93, and the rear edge of the waist region R14 coincides with the rear edge 10R of the disposable diaper 10.
  • a leg elastic member 42 extending in the front-rear direction L may be provided between the side sheet 22 and the back sheet 23 or between the side sheet 22 and the exterior sheet 24.
  • the leg elastic member 42 may be configured by a band-shaped elastic sheet that expands and contracts in the front-rear direction L. The contraction of the leg elastic member 42 causes the disposable diaper 10 to fit around the leg when worn.
  • the leg elastic member 42 is arranged along the leg opening 65 at least in the crotch region S3 outside the absorbent core 31 in the width direction W.
  • the leg elastic members 42 are arranged between the exterior sheet 24 and the side sheet 22 and between the back sheet 23 and the side sheet 22.
  • a waist elastic member 45 extending in the width direction W may be provided between the side sheet 22 and the back sheet 23 and between the side sheet 22 and the exterior sheet 24.
  • the waist elastic member 45 may be formed of a substantially rectangular elastic sheet that expands and contracts in the width direction W.
  • the waist elastic member 45 is joined between the skin-side sheet 20 and the non-skin-side sheet 25. More specifically, as shown in FIG. 4, the waist elastic member 45 extends between the absorbent core 31 and the non-skin side sheet 25 or between the skin-side sheet 20 and the non-skin It is joined between the face side sheets 25.
  • the contraction of the waist elastic member 45 allows the disposable diaper 10 to fit around the waist when worn.
  • the waist elastic member 45 is arranged at least in the rear waistline region S2.
  • the waist elastic member 45 is disposed straddling the locking arrangement region R13 and the waist region R14.
  • the rear edge 45R of the waist elastic member 45 is located forward of the rear edge 10R of the disposable diaper 10 and rearward of the tape placement region R11.
  • the front edge 45F of the waist elastic member 45 is located forward of the tape placement region R11 and forward of the rear edge 31R of the absorbent core 31.
  • the waist elastic member 45 is disposed so as to overlap with either the skin side sheet 20 or the non-skin side sheet 25, and constitutes the reinforcing sheet of the present invention.
  • the reinforcing sheet is a sheet separate from the skin-side sheet 20 and the non-skin-side sheet 25, and reinforces the region where the skin-side sheet 20 and the non-skin-side sheet 25 are arranged.
  • the state in which the two members overlap is not only the state in which the two members abut and overlap with each other, but also another member is disposed between the two members, and the two members are indirectly connected. This includes the overlapping state
  • the waistband 80 includes a sheet layer 81 in which a plurality of sheets are stacked, and a band elastic member 82 joined to the sheet layer 81.
  • the sheet layer 81 of the waistband 80 includes a first nonwoven fabric layer 811, a second nonwoven fabric layer 812, and a film layer 813 disposed between the first nonwoven fabric layer 811 and the second nonwoven fabric layer 812. Including.
  • the first nonwoven fabric layer 811 and the second nonwoven fabric layer 812 are made of the same nonwoven fabric, and are folded at the vertex of the folded portion 86 of the waistband 80.
  • the first nonwoven fabric layer 811 is located closest to the skin-side sheet 20 in the waistband 80.
  • the band elastic member 82 is formed of a thread-like or band-like elastic member, and is fixed to the sheet layer 81 in a state of extending in the width direction W.
  • the band elastic member 82 of the present embodiment is fixed between the first nonwoven fabric layer 811 and the film layer 813.
  • a plurality of band elastic members 82 are arranged at intervals in the front-rear direction L.
  • a plurality of band elastic members 82 are respectively arranged at a non-joining portion 85 and a folded portion 86 described later.
  • the waistband 80 may be arranged near the waist opening 66 in the rear waistline region S2.
  • the outer edge 80E of the waistband 80 may be located outside the outer edge 31E of the absorbent core 31 in the width direction, and may be located inside the inner edge of the fastening tape 90 in the width direction.
  • the front edge 80F of the waistband 80 may be located behind the front edge 90F of the fastening tape 90.
  • the front edge 80F of the waistband 80 may be located forward of the rear edge 90R of the fastening tape 90. Since the fastening tape 90 and the waistband 80 overlap in the width direction W, the interlocking property between the fastening tape 90 and the waistband 80 can be enhanced.
  • the front edge 80F of the waistband 80 may be disposed behind the center of the fastening tape 90 in the front-rear direction L.
  • the waistband 80 is provided on the waist opening side, and the accommodation space AS for the waistband can be provided widely.
  • the disposable diaper 10 is located between the front edge 90F of the fastening tape 90 and the front edge 80F of the waistband 80 in the front-rear direction L and between the inner edge of the fastening tape and the outer edge of the absorbent core 31 in the width direction W. It has a separation region R15.
  • the separation regions R15 may be located on both sides of the absorption core 31 in the width direction.
  • One separation region R15 and the other separation region R15 may be arranged at intervals in the width direction W. In FIG. 1, the separation region R15 is indicated by hatching.
  • the waistband 80 has an upright portion configured to be able to stand up with respect to the skin-side sheet 20 and a base edge serving as an upright fulcrum of the upright portion.
  • the proximal edge has a first proximal edge located outside the absorbent core 31 in the width direction and a second proximal edge located closer to the waist opening 66 than the upright portion.
  • the waistband 80 is configured to be able to expand and contract in the width direction W.
  • the waistband 80 may be configured to expand and contract in the width direction by the band elastic member 82, or may be configured to expand and contract in the width direction by the sheet layer having elasticity.
  • the waistband 80 only needs to be configured so that at least the upright portion can be contracted, and the entire upright portion, the first base end edge, and the second base end edge may be configured to be contractable.
  • the waistband 80 has the facing portion 83 located closest to the skin-side sheet 20 in the waistband 80.
  • the facing portion 83 is a portion that can be brought into contact with the skin surface side sheet 20 and is a portion that includes the sheet layer 81 that is positioned closest to the skin surface side sheet 20 and that is not folded back from a fold as a base point. It is configured.
  • the facing portion 83 of the present embodiment is a portion that is not folded back with respect to the fold FL, and is configured by a portion that is located on the skin facing surface side and behind the fold FL. In FIG. 4, the facing portion 83 is shown with diagonal lines.
  • the facing portion 83 is provided with a joint portion 84 joined to the skin-side sheet 20 and a non-joint portion 85 extending forward from the joint portion 84 and not joined to the skin-side sheet 20.
  • FIG. 4 shows a length X in the front-rear direction of the joint portion 84 and a length Y in the front-rear direction L of the non-joint portion 85.
  • the non-joined portion 85 constitutes the upright portion of the present invention.
  • the front edge of the upright portion is the front edge 85F of the non-joining portion 85
  • the rear edge of the upstanding portion is the rear edge 85R of the non-joining portion 85.
  • the front edge 85F of the non-joined portion 85 may be located on the front side of the rear edge 31R of the absorbent core 31 in the extended state.
  • the joint 84 extends rearward from the non-joint 85.
  • the front edge 84F of the joint 84 constitutes the second base edge of the present invention.
  • the joint 84 extends in the front-rear direction from the second base edge.
  • the rear edge 84R of the joint 84 may extend to the rear edge 80R of the waistband 80 and may coincide with the rear edge 10R of the disposable diaper 10.
  • the front edge 84F of the joint 84 constitutes the rear edge of the pocket.
  • the front edge 84F of the joint portion 84 may be located rearward of the rear edge 31R of the absorbent core 31 in the extended state, or may coincide with the rear edge 31R of the absorbent core 31.
  • the rear edge 84R of the joint 84, the rear edge 83R of the facing portion 83, the rear edge 80R of the waistband, and the rear edge 10R of the disposable diaper 10 are in the front-rear direction L. Are the same.
  • a non-joined portion may be provided behind the joint portion 84.
  • the non-joining portion located behind the joining portion 84 does not open toward the front side and does not form a pocket. Therefore, even if it is erroneously cut due to an error in a manufacturing process described later, it does not affect the formation of the pocket. Further, the non-joined portion located on the rear side of the joined portion 84 may be folded toward the side away from the skin side sheet 20 based on a fold extending in the width direction at the rear end edge of the non-joined portion.
  • the waistband 80 has a side joint portion 87 joined to the skin-side sheet 20 on the outer side in the width direction than the non-joint portion 85 constituting the upright portion.
  • the outer edge 87E of the side joint 87 may be located near the outer edge 80E of the waistband 80 and may reach the outer edge 80E of the waistband 80.
  • the inner edge 87I of the side joint 87 may be located outside the outer edge 31E of the absorbent core 31 in the width direction W, and is separated from the absorbent core 31 in the width direction W.
  • the inner edge 87I of the side joint 87 constitutes a first base edge of the present invention.
  • FIG. 1 different non-joining portions 85, side joining portions 87, and joining portions 84 that constitute the upright portions are shown with different oblique lines.
  • the non-joined portion 85 extends from the joined portion 84 to the front side.
  • the waistband 80 may have a folded portion 86 that is folded from a fold FL extending in the width direction W at a front edge 85F of the non-joined portion 85.
  • the non-joined portion 85 is provided from the front edge 84F of the joined portion 84 to the fold FL.
  • a front edge 85F of the non-joining portion 85 forms a front edge 83F of the facing portion 83 and a front edge 80F of the waistband 80, and matches the fold line FL.
  • the length of the non-joining portion 85 in the front-rear direction L is the distance between the front end edge 84F of the joining portion 84 and the fold FL. As shown in FIG.
  • the folded portion 86 is folded toward the side away from the skin-side sheet 20 and becomes a region in contact with the body. By providing the folded portion 86 in contact with the body, it becomes easier to secure the accommodation space by the pocket. Note that the waistband 80 according to the modified example may not have the folded portion 86.
  • the folded portion 86 extends rearward from the front edge 85F of the non-joined portion 85.
  • the rear end edge 86R of the folded portion 86 may coincide with the rear end edge 83R of the facing portion 83, may be located on the front side of the rear end edge 83R of the facing portion 83, or may be opposite. It may be behind the rear edge 83R of the portion 83.
  • the rear edge 86R of the folded portion 86 and the rear edge 83R of the facing portion 83 coincide in the front-rear direction L.
  • the rear edge 86R of the folded portion 86 In the configuration in which the rear edge 86R of the folded portion 86 is located on the front side of the rear edge 83R of the facing portion 83, the rear edge 83R of the facing portion 83 forms the rear edge 80R of the waistband 80. I do. In the configuration in which the rear edge 86R of the folded portion 86 is located behind the rear edge 83R of the facing portion 83, the rear edge 86R of the folded portion 86 forms the rear edge 80R of the waistband 80. .
  • the outside of the folded portion 86 is joined to the unfolded portion of the waistband (the facing portion 83) via the second joint 88.
  • the second joint portions 88 are provided as a pair on both sides in the width direction of the folded portion 86. In a region between the pair of second joint portions 88, the folded portion 86 stands on the wearer side with respect to the facing portion 83.
  • the waistband according to the modified example may be folded toward the side away from the skin-side sheet 20 based on the crease extending in the width direction W at the rear end edge 86 ⁇ / b> R of the folded portion 86.
  • the waistband 80 stands more toward the wearer, and the waistband 80 is more likely to come into contact with the body.
  • the front edge 80F of the waistband 80 may be located in the tape arrangement region R11 or in the engagement arrangement region R13 in the extended state. That is, the front edge 80F of the waistband 80 may be located on the front side of the front edge of the waist region R14, or may be located on the front side of the front edge of the waist opening region R12.
  • the rear end edge 80R of the waistband 80 is disposed behind the center R14CL in the front-rear direction of the waist region R14 in the extended state.
  • the waist region R14 is located behind the locking arrangement region R13.
  • the locking arrangement region R13 is a region for holding the disposable diaper 10 with respect to the body in a state where the locking portion 93 is fixed to the target portion 95 when worn.
  • the waist region R14 located on the rear side of the locking arrangement region R13 is unlikely to receive a holding force around the wearer's waist by the fastening tape 90 or the like, and the waist region R14 is relatively easily deformed in the rear waist region S2. Area.
  • the waistband 80 is arranged at least half the length of the waist region R14 in the front-rear direction L. Therefore, the rigidity is increased over half or more of the waist region R14 in the front-rear direction L, and the rigidity of the waist region R14 is easily ensured. Problems such as curling of the waist region R14 can be suppressed, and post-leakage can be suppressed.
  • the pocket of the waistband 80 is formed by the accommodation space AS sandwiched between the non-joining portion 85 of the facing portion 83 and the skin-side sheet 20.
  • a joining portion 84 is provided on the waist opening 66 side of the non-joining portion 85. Since the non-joined portion 85 is provided on the front side of the joined portion 84, the pocket is cut even if a part of the waistband 80 (for example, the rear edge of the waistband 80) is accidentally cut due to a manufacturing error or the like. It is hard to be. Therefore, it is easy to maintain the function as the pocket, the pocket by the waistband 80 can be appropriately formed, and the occurrence of post-leakage can be suppressed.
  • the rear edge 80R of the waistband 80 may be disposed behind the center R12CL of the waist opening region R12 in the front-rear direction L in the extended state.
  • the waist opening region R12 is located behind the tape arrangement region R11.
  • the tape placement region R11 is a region for holding the disposable diaper with respect to the body in a state where the fastening tape 90 is fixed to the target portion 95 when worn.
  • the waist opening region R12 located on the rear side of the tape arrangement region R11 the force of holding the waist around the wearer is less likely to be applied, and the waist opening region R12 is a region that is more easily deformed in the rear waist region S2.
  • the rear waist region S2 may be inserted between the wearer's body and the bedding.
  • the waist opening region R12 is located at the tip at the time of insertion, and is a region that is easily turned up or turned up.
  • the waistband 80 is arranged at least half the length of the waist opening region R12 in the front-rear direction L. Therefore, the rigidity is increased over half or more of the waist opening region R12 in the front-rear direction L, and the rigidity of the waist opening region R12 is easily secured. Problems such as curling of the waist opening region R12 can be suppressed, and back leakage can be suppressed.
  • the rear end edge 84R of the joint portion 84 may be disposed behind the center R14CL of the waist region R14 in the front-rear direction in the extended state.
  • the joint portion 84 is a region joined to the skin-side sheet 20 and can further increase the rigidity of the waist region R14. Therefore, the effect of suppressing the back leakage by increasing the rigidity of the waist region R14 is more easily obtained.
  • the rear end edge 84R of the joint portion 84 may be arranged rearward of the center R12CL in the front-rear direction of the waist opening region R12 in the extended state. It is easier to obtain the effect of increasing the rigidity of the waist opening region R12 and suppressing the rear leakage.
  • the rear edge 84R of the joint 84 may reach the rear edge 10R of the disposable diaper 10 in the extended state.
  • the rigidity of the rear edge 10R of the disposable diaper 10 can be increased, and the rigidity of the waist opening region R12 can be more easily secured. Problems such as curling of the waist opening region R12 can be suppressed, and post-leakage can be further suppressed.
  • the rear end edge 85R of the non-joined portion 85 may be located rearward of the center of the locking arrangement region R13 in the front-rear direction L in the extended state.
  • the rear edge 85R of the non-joined portion 85 forms a rear edge of the pocket sandwiched between the non-joined portion 85 of the facing portion 83 and the skin-side sheet 20.
  • the length of the non-joined portion 85 in the front-rear direction L can be ensured, and the accommodation space of the pocket by the non-joined portion 85 can be widened.
  • the front edge 84F of the joint portion 84 may be located forward of the rear edge of the locking arrangement region R13 in the extended state.
  • the length of the joint portion 84 in the front-rear direction L can be ensured, and the rigidity of the region where the waistband 80 is arranged can be further increased. Therefore, it is possible to further suppress the problem that the waist region R14 and the like are turned up, and to further suppress the back leakage.
  • the waist elastic member 45 as a reinforcing sheet may be disposed in the waist region R14. More preferably, the waist elastic member 45 may be arranged at least half the length of the waist region R14 in the front-rear direction L. Therefore, the rigidity is increased over half or more of the waist region R14 in the front-rear direction L, and the rigidity of the waist region R14 is easily ensured. Problems such as curling of the waist region R14 can be suppressed, and post-leakage can be suppressed. Further, the waist elastic member 45 as a reinforcing sheet may be arranged in the waist opening region R12. Problems such as curling of the waist opening region R12 can be suppressed, and back leakage can be suppressed.
  • the waist elastic member 45 may be disposed so as to straddle the left and right fastening tapes 90. With the fastening tape 90 and the waist elastic member 45, a region having high rigidity is provided continuously in the width direction. Therefore, it is possible to suppress the bulging in the vicinity of the waist opening in the rear waist region, and it is possible to further suppress the leakage in the rear waist region.
  • a waist elastic member 45 as a reinforcing sheet may be provided in the separation region R15 of the disposable diaper.
  • the region between the waistband 80 and the fastening tape 90 in the width direction W is reinforced by the waist elastic member 45, so that the fastening tape 90 and the waistband 80 are easily linked. Therefore, when the fastening tape 90 is pulled outward in the width direction W, the waistband 80 is pulled in the width direction W in conjunction therewith, and the waistband 80 is easily lifted from the skin-side sheet 20. It becomes easy to form a pocket by the waistband 80.
  • the front edge 80F of the waistband 80 is located closer to the waist opening 66 than the front edge 90F of the fastening tape 90, and when worn, it is easy to cover the buttocks with the waistband 80 and to easily accommodate excrement from the buttocks. .
  • a region between the front edge 80F of the waistband 80 and the front edge 90F of the fastening tape 90 in the front-rear direction L is reinforced by the waist elastic member 45, and is less likely to deform and wrinkle. Therefore, it is possible to suppress the waistband 80 from being pulled down to the crotch side due to the deformation between the front edge 80F of the waistband 80 and the front-rear direction L of the front edge 90F of the fastening tape 90. Therefore, the buttocks can be continuously covered by the waistband 80, and the back leakage can be suppressed.
  • the waist elastic member 45 only needs to be arranged in at least a part of the separation region R15.
  • the length in the width direction W of the waist elastic member 45 disposed in the separation region R15 may be equal to or more than ⁇ of the length in the width direction W of the separation region R15. That is, in each separation region R15, the waist elastic member 45 may be disposed over half or more of the length in the width direction W of the separation region R15.
  • the length in the front-rear direction L of the waist elastic member 45 disposed in the separation region R15 may be equal to or more than ⁇ of the length in the front-rear direction L of the separation region R15.
  • the waist elastic member 45 may be disposed over half or more of the length in the front-rear direction L of the separation region R15.
  • the waist elastic member 45 further increases the rigidity of the separation region R15, can further suppress the waistband 80 from being pulled down to the crotch side, and the waistband 80 can be more easily raised by interlocking with the fastening tape 90.
  • the waist elastic members 45 are arranged in the entire area of the separation area R15, and the deformation of the entire area of the separation area R15 can be suppressed.
  • the waist elastic member 45 as a reinforcing sheet may have elasticity in which at least a part expands and contracts in the width direction W. Since the waist elastic member 45 expands and contracts in the width direction W, the interlocking property between the fastening tape 90 and the waistband 80 at the time of attachment can be improved. Further, the waist elastic member 45 extends while the wearer is in the forward bending posture, so that the rear waistline region S2 follows the body, and the rear waistline region S2 can continue to fit the body. In addition, the part where the separation region R15 is applied to the wearer is above the bulge of the buttocks of the wearer, and is a part where the body is concave.
  • the absorption core 31 is not disposed, and a gap with the body is easily generated.
  • the rear waistline region S2 fits the body and the gap between the body and the diaper can be suppressed.
  • the reinforcing sheet may have elasticity over the entire area. In addition, in a modification, the reinforcement sheet does not need to have elasticity.
  • the waist elastic member 45 may overlap the waistband 80 in the thickness direction T.
  • the waistband elastic member 45 and the waistband 80 are more easily linked to each other, and when the fastening tape 90 is pulled at the time of attachment, the waistband 80 is linked and pulled through the waistband elastic member 45, and It becomes easier to form pockets.
  • the waist elastic member 45 only needs to overlap at least a part of the waistband 80, and may preferably overlap the entire region of the waistband 80.
  • the force pulled in the width direction W can be transmitted over the entire region of the waistband 80 in the width direction W.
  • the waistband 80 stands on the wearer side with respect to the skin surface side sheet 20 and the waist elastic member 45 in the thickness direction T. The rigidity on the base side when the waistband 80 stands up is increased, and the waistband 80 is more easily raised on the wearer side.
  • the waist elastic member 45 may overlap the fastening tape 90 in the thickness direction T.
  • a force pulling outward in the width direction W is easily applied to the waist elastic member 45.
  • the waistband 80 can be pulled in conjunction with the waist elastic member 45 via the waistband elastic member 45, so that the pocket by the waistband 80 can be more easily formed.
  • the waist elastic member 45 only needs to overlap at least a part of the base portion 92 of the fastening tape 90.
  • the waist elastic member 45 may extend forward from the front edge 90F of the fastening tape 90.
  • a region on the crotch side of the fastening tape 90 receives a force due to the movement of the wearer and is easily deformed. Even in a region on the crotch region side of the fastening tape 90, rigidity can be increased by the waist elastic member 45, and deformation can be suppressed.
  • the area of the region where the waistband 80 and the waist elastic member 45 overlap may be larger than the area of the region where the fastening tape 90 and the waist elastic member 45 overlap.
  • the fastening tape 90 is disposed on the same layer as the waist elastic member 45 in the thickness direction T, and the fastening tape 90 and the waist elastic member 45 are relatively easily interlocked.
  • the waistband 80 is arranged on the skin-facing surface side of the skin-side sheet 20, and is arranged so as to be shifted from the waist elastic member 45 in the thickness direction T.
  • the distance between the rear edge 90R of the fastening tape 90 and the front edge 80F of the waistband 80 may be shorter than the distance between the front edge 90F of the fastening tape 90 and the front edge 80F of the waistband 80. That is, the front edge 80F of the waistband 80 is located behind the center of the fastening tape 90 in the front-rear direction L (the center of the tape arrangement area).
  • the separation region R15 can be reinforced by the waist elastic member 45, even if the waistband 80 is arranged near the waist opening 66, the waistband 80 is prevented from being pulled down to the crotch side, and the waistband is prevented.
  • the pocket according to 80 can be kept on the upper side of the buttocks.
  • the waist elastic member 45 may be arranged in a region that does not overlap the leg elastic member 42 in the thickness direction T. It is possible to suppress the waist elastic member 45 from bending due to the contraction of the leg elastic member 42, and it is easier to obtain the effect of suppressing the deformation of the separation region R15 by the hip elastic member 45.
  • the waist elastic member 45 may be arranged in a region extending rearward along the front-rear direction L from the rear end edge 42R of the leg elastic member 42.
  • a region extending rearward from the rear edge of the leg elastic member 42 along the front-rear direction L is a rear edge 42R of the leg elastic member 42 arranged in the extended state (leg elasticity arranged in the non-extended state). (Excluding members) from the rear side along the front-rear direction L.
  • FIG. 1 shows the rear edge 42R of the leg elastic member 42 arranged in an extended state. The region extending rearward from the rear end edge of the leg elastic member 42 is easily pulled down to the crotch region side by the contraction of the leg elastic member 42.
  • a region extending rearward from the rear edge 42R of the leg elastic member 42 along the front-rear direction L is reinforced by the waist elastic member 45, and is hardly pulled down to the crotch region side.
  • the waistband 80 can be prevented from being pulled down to the crotch side. Therefore, the buttocks can be continuously covered by the waistband 80, and the back leakage can be suppressed.
  • the waist elastic member 45 may overlap the base edge of the waistband 80 in the thickness direction T. In the present embodiment, the waist elastic member 45 overlaps the inner edge 87I of the side joint 87 as the first base edge and the front edge 84F of the joint 84 as the second base edge.
  • the waist elastic member 45 may overlap at least a part of the base edge of the waistband 80, and may preferably overlap the entire area of the base edge of the waistband 80.
  • the waist elastic member 45 may be disposed so as to straddle one separation region R15 and the other separation region R15.
  • One waist elastic member 45 can reinforce both the one separated region R15 and the other separated region R15.
  • the waist elastic members 45 that are continuous in the width direction W are arranged in a region between the left and right fastening tapes 90, so that the interlocking properties of the left and right fastening tapes 90 can be enhanced. Therefore, the rear waist region S2 fits more to the body, and it is possible to suppress the generation of the gap between the body and the diaper.
  • the waistband 80 may be arranged in a region that does not overlap with the contracted portion 63 of the leak-proof gather 60 in the thickness direction T. It is possible to suppress the waist elastic member 45 from sagging due to the contraction of the contraction portion 63, and it is easier to obtain the effect of suppressing the deformation of the separation region R15 by the waist elastic member 45.
  • the tensile load of the waistband 80 in the width direction W may be lower than the tensile load of the waist elastic member 45 in the width direction W.
  • the tensile load in the front-rear direction L of the leg elastic member 42 may be lower than the tensile load in the width direction W of the hip elastic member 45.
  • the tensile load in the front-rear direction L of the leg elastic member 42 may be lower than the tensile load in the width direction W of the waistband 80.
  • the leg elastic member 42 is easily stretched, so that it fits more around the wearer's leg and side leakage can be suppressed.
  • the waistband 80 has a relatively high tensile load and is difficult to elongate. Therefore, the waistband 80 has a lower degree of elongation than the leg elastic members, and is less likely to be displaced in the front-rear direction L.
  • the waistband 80 can be prevented from shifting to the crotch side when the leg-hole elastic member 42 is extended, and the leg-hole elastic member 42 can be fitted around the leg while maintaining the position of the waistband 80 in the front-back direction. Therefore, it is possible to suppress both lateral leakage and rear leakage.
  • the tensile load of the waistband 80 in the width direction W, the tensile load of the waist elastic member 45 in the width direction W, and the tensile load of the leg elastic member 42 in the front-rear direction L can be measured as follows. Disassembly is performed using a disposable diaper cold spray, and the waistband 80, the waist elastic member 45, and the leg elastic member 42 are taken out to prepare a sample. It is fixed between chucks of a tensile tester (for example, “RTA-100” manufactured by Orientec Co., Ltd.). The length of the initial state of the sample is a natural state. Then, the sample fixed between the chucks is extended until it becomes 1.5 times the length of the initial state, and the load at that time is defined as a tensile load at the time of 1.5 times extension.
  • a tensile tester for example, “RTA-100” manufactured by Orientec Co., Ltd.
  • the disposable diaper 10 may satisfy S ⁇ Y, where S is the distance in the width direction W of the first base end edge and the absorbent core 31 in the extended state, and Y is the length in the front-rear direction of the upright portion in the extended state. .
  • S is the distance in the width direction W between the inner edge 87I of the side joint 87 and the outer edge 31E of the absorbent core 31 in the extended state.
  • Y is the length in the front-rear direction of the non-joined portion 85 in the extended state.
  • the non-joining portion 85 serving as the rising portion of the waistband 80 is configured to be able to stand with respect to the front edge 84F of the joining portion 84 and the inner edge 87I of the side joining portion 87, and forms an accommodation space for accommodating excrement. I do.
  • the distance S in the width direction W between the side joint portion 87 and the absorbent core 31 is equal to or greater than the length Y in the front-rear direction L of the non-joint portion 85, the accommodation space AS rising with respect to the outer edge 31E of the absorbent core 31. It is possible to form a pocket such that the height of the pocket is equal to or higher than the height of the accommodation space AS rising with respect to the joint portion 84.
  • the outer edge of the storage space is not easily raised due to the rigidity of the absorbent core 31, the entire storage space is easily raised, and the storage space is easily secured.
  • a space for accommodating pockets by the waistband 80 can be secured, and occurrence of back leakage can be suppressed.
  • the disposable diaper 10 may satisfy S ⁇ Y + U, where U is the distance in the front-rear direction between the rear end edge of the absorbent core 31 and the second base end edge in the extended state. As shown in FIG. 4, U is the distance in the front-rear direction L between the rear end 31R of the absorbent core 31 and the front end 84F of the joint 84 in the extended state. Since the front edge 84F of the joint 84 is located behind the rear edge 31R of the absorbent core 31, the front edge 84F of the joint 84 rises further toward the wearer with respect to the rear edge 31R of the absorbent core 31. Sometimes. At this time, the height of the rising of the accommodation space is Y + U.
  • the height of the accommodation space by S is equal to or less than the height of the rise of the accommodation space by Y + U, the height of the rise of the accommodation space by Y + U can be suppressed.
  • the region between the absorbent core 31 and the joint 84 is located between the upright fulcrum of the waistband 80 and the absorbent core 31 and has a lower rigidity and is easily deformed as compared to both sides in the front-rear direction.
  • the front end edge 85F of the non-joined portion 85 is located on the front side of the rear end edge 31R of the absorbent core 31, and the front end edge 31R of the absorbent core 31 in the extended state and the front end edge of the upright portion in the front-rear direction.
  • V is the distance in the front-rear direction L between the rear end 31R of the absorbent core 31 and the front end 85F of the non-joined portion 85 in the extended state.
  • the distance V in the front-rear direction L between the rear edge 31R of the absorbent core 31 and the front edge 85F of the non-joined portion 85 in the extended state is absorbed by the upright portion.
  • the length (V) in the front-rear direction of the region where the absorbent core 31 overlaps in the upright portion is equal to or longer than the length (U) in the front-rear direction of the region where the absorbent core 31 does not overlap in the upright portion.
  • the absorbent core having high rigidity is located on the non-skin facing surface side as compared with the region where the absorbent core does not overlap, and is more easily erected on the wearer side.
  • V ⁇ U the upright portion is more easily raised.
  • the front edge 85F of the non-joining portion 85 may be located on the front side of the rear edge 31R of the absorbent core 31, and may satisfy U> V.
  • the length (U) of the region where the absorbent core 31 does not overlap in the upright portion in the front-rear direction L is longer than the length (V) of the region L where the absorbent core 31 overlaps in the upright portion. That is, the length in the front-rear direction L of the upright portion disposed rearward of the rear end edge 31R of the absorbent core 31 is greater than the length in the front-rear direction of the upright portion disposed forward of the rear end edge of the absorbent core. Is also long.
  • the waistband pocket can be formed larger on the rear side than the rear end edge 31R of the absorbent core 31.
  • the user can understand that the pocket of the waistband 80 is arranged larger behind the absorbent core, and can obtain a sense of security against the rear leakage.
  • a reinforcing sheet may be provided in a region between the rear end 31R of the absorbent core 31 in the extended state and the second base end (the region U shown in FIG. 4).
  • a waist elastic member 45 as a reinforcing sheet is disposed.
  • the rigidity of the region between the rear edge 31R of the absorbent core 31 and the front edge 84F (second proximal edge) of the joint 84 is increased by the reinforcing sheet, and the region where the absorbent core overlaps in the upright portion (V shown in FIG. 4). Region) can be reduced. Therefore, the entire standing portion is easily raised.
  • the front edge 85F of the non-joined portion 85 is located behind the rear edge 31R of the absorbent core 31, U (the rear edge 31R of the absorbent core 31 in the extended state and the joint 84)
  • U the rear edge 31R of the absorbent core 31 in the extended state and the joint 84
  • the distance between the front edge 84F and the front edge 84F in the front-rear direction L is Y (the length of the upright portion in the front-rear direction in the extended state) + V (the rear edge 31R of the absorbent core 31 in the extended state and the front edge of the upright portion in the front-rear direction).
  • the entire pocket of the waistband is disposed on the rear side of the absorbent core, so that the user can have a greater sense of security against the rear leakage.
  • the region between the rear edge 31R of the absorbent core 31 in the extended state and the second base edge. May be provided with a reinforcing sheet.
  • the rigidity on the non-skin side is increased as compared with the waistband, and the rise of the waistband can be stabilized.
  • the waist elastic member 45 may be disposed at least in a part of a region between the rear end edge 31R of the absorbent core 31 and the front end edge 84F (second base end edge) of the joint portion 84. , May be arranged in the entire region in the front-rear direction between the rear end 31R of the absorbent core 31 and the front end 84F (second base end) of the joint 84.
  • the waist elastic member 45 may be arranged in the entire region of the waistband 80 in the width direction Q. The rigidity is enhanced by the reinforcing sheet over the entire region of the waistband in the width direction, and the upright portion is easily raised over the entire region of the waistband in the width direction.
  • the disposable diaper 10 may satisfy U ⁇ X, where X is the length of the joint portion 84 in the front-rear direction.
  • X is the length of the joint portion 84 in the front-rear direction.
  • the rear waist region S2 may be inserted between the wearer's body and bedding.
  • the rigidity of the joint 84 is increased due to the long length of the joint 84 in the front-rear direction, and the bulging of the front edge 84F of the joint 84 serving as a fulcrum of the upright portion can be suppressed.
  • the waist elastic member 45 as a reinforcing sheet may be disposed so as to straddle the front end edge 84F of the joint portion 84, which serves as an upright fulcrum of the upright portion in the front-rear direction. The bulging of the front edge 84F of the joining portion 84, which serves as a fulcrum of the standing portion, can be suppressed.
  • the length of the folded portion 86 in the front-rear direction L may be longer than the length of the non-joined portion 85 in the front-rear direction L in the extended state.
  • the length of the folded portion 86 in contact with the body in the front-rear direction is longer than the length of the non-joined portion 85 constituting the pocket accommodation space.
  • a wide area where the waistband 80 contacts the body is ensured, the stability of the shape of the waistband 80 is improved, and the generation of a gap between the waistband 80 and the body can be suppressed.
  • the shrinking force of the folded portion 86 is increased, the shrinking force per unit length can be suppressed. Therefore, the adhesion of the waistband 80 can be secured while suppressing the wearing pressure of the folded portion 86 and suppressing the deterioration of the wearing feeling.
  • the rear end edge 86R of the folded portion 86 may be located rearward of the locking arrangement region R13 in the extended state.
  • the locking arrangement region R13 easily adheres to the body when worn.
  • the folded portion 86 is arranged closer to the waist opening 66 than the locking arrangement region R13 that is in close contact with the body. The user can understand that the pocket is arranged near the waist opening 66, and can obtain a sense of security against the back leakage.
  • the inner edge 87I of the side joint portion 87 of the waistband 80 may be located outside the leak-proof base edge 64 of the leak-proof gather 60 in the width direction W.
  • the inner edge 87I of the side joint 87 is easily subjected to a force inward in the width direction W due to the contraction of the upright portion. Since the inner edge 87I of the side joint 87 is located outside the leak-proof base edge 64 of the leak-proof gather 60 in the width direction W, the shrinkage of the waistband 80 causes the leak-proof base edge 64 to be inside the width direction W. Can be suppressed. A space sandwiched between the pair of leak-proof gathers can be provided widely, so that side leakage can be suppressed.
  • the contraction force of the folded portion 86 may be higher than the contraction force of the non-joined portion 85. Since the elastic stress of the folded portion 86 is relatively high, the tightness of the waistband 80 to the body can be ensured. In addition, since the stress in the region where the non-joining portion 85 is provided is relatively low, it is possible to suppress the problem that the pocket is excessively lifted from the body due to the high stress in the non-joining portion 85, and to prevent the gap between the body and the pocket from occurring. Can be suppressed.
  • the contraction force of the joint portion 84 may be lower than the contraction force of the non-joint portion 85 constituting the upright portion. Since the contracting force of the joint 84 is low, the joint 84 is less likely to be in close contact with the body than the non-joint 85. Since the joint portion is in close contact with the body, it is possible to suppress a problem that the upright portion that does not overlap with the joint portion 84 is relatively separated from the body. Therefore, it is easy to secure the adhesiveness of the standing portion to the body. In addition, as shown in FIG. 6, the folded portion 86 also rises toward the wearer along with the non-joined portion 85.
  • the folded portion 86 in a region that does not overlap with the joint portion 84 does not come into close contact with the body together with the joint portion 84, so that the folded portion 86 can be maintained in an upright state and a pocket accommodation space can be secured. Further, in the folded portion 86 in the region overlapping with the joint portion 84, it is easy to adhere to the body together with the joint portion 84, and it is easy to secure adhesion to the body.
  • an autograph type tensile tester (eg, AG-1KN1) manufactured by Shimadzu Corporation is used. It can.
  • the dimension of the folded portion 86 in the width direction W, the dimension of the joint portion 84 in the width direction W and the non-joined portion 85 After the dimension in the width direction W was measured in advance (initial dimension), the waistband 80 was cut, and the folded portion 86, the joined portion 84, and the non-joined portion 85 were cut out to obtain a sample.
  • each sample is sandwiched between a fixed chuck and the other end, and the sample is stretched at a speed of 300 mm / min to a size of about 90% of the initial size, and then inverted to obtain about 75% of the initial size.
  • the tensile load (N) at the time of contraction to the size was determined, and converted to a stress value (N / mm) per unit width (mm), which was defined as a contraction force.
  • the rear edge 86R of the folded portion 86 may be located on the front side of the rear edge 84R of the joint portion 84 in the extended state. Since the rear edge 86R of the folded portion 86 is located on the front side of the rear edge 84R of the joining portion 84, the folded portion 86 is cut unintentionally even if the folded portion 86 is shifted during manufacturing. Can be suppressed. Unintentional cutting of the folded portion 86 can suppress generation of a cut piece of the waistband 80.
  • the waistband 80 may overlap the fastening tape 90 in the thickness direction T.
  • the waistband 80 can be pulled in conjunction therewith. Therefore, the waistband 80 is more easily raised, and a pocket formed by the waistband 80 is more easily formed.
  • FIG. 7 is a cross-sectional view in a cross section corresponding to FIG. 4 in the first embodiment
  • FIG. 8 is a cross-sectional view in a cross section corresponding to FIG. 5 in the first embodiment.
  • FIG. 7 shows an extended state
  • FIG. 8 shows a natural state.
  • the disposable diaper 10Z of the second embodiment differs from the disposable diaper 10 of the first embodiment in the configuration of the waistband 80.
  • the same components as those of the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.
  • the waistband 80 ⁇ / b> Z of the second embodiment has a folded portion 86 that is folded at a rear end edge of the joint 84 at a fold FL ⁇ b> 1 extending in the width direction W as a base point.
  • the facing portion 83 is provided with only the joining portion 84.
  • the non-joined portion of the first embodiment is not provided on the front side of the joined portion 84.
  • a non-joining portion may be provided in front of the joining portion 84.
  • the waistband 80 ⁇ / b> Z is configured such that the folded portion 86 can stand up with respect to the facing portion 83.
  • the folded portion 86 constitutes the upright portion of the present invention, and the fold FL1 constitutes the second base end edge of the present invention. Further, an outer portion of the folded portion 86 is joined to the skin side sheet 20 or the facing portion 83 via a second joining portion. The position of the second joint in plan view is the same as in the first embodiment.
  • the accommodation space AS sandwiched between the folded portion 86 of the waistband 80Z and the skin-side sheet 20 and the accommodation space AS sandwiched between the folded portion 86 and the facing portion 83 form a pocket that opens toward the front side. I have.
  • the folded portion 86 can rise from the fold FL1 as a base point
  • the facing portion 83 can rise from the front end edge 84F of the joint portion 84 as a base point.
  • the length Y in the front-rear direction of the upright portion in the extended state in the second embodiment is the length L in the front-rear direction of the folded portion 86.
  • the distance U in the front-rear direction between the rear end edge of the absorbent core and the second base end edge in the extended state in the second embodiment is the distance in the front-rear direction between the rear end edge 31R of the absorbent core 31 and the fold FL1.
  • the distance V in the front-rear direction between the rear edge of the absorbent core and the front edge of the upright portion in the second embodiment is the distance between the rear edge 31R of the absorbent core 31 and the front edge 86F of the folded portion 86 in the front-rear direction.
  • S ⁇ Y may be satisfied
  • S ⁇ Y + U may be satisfied
  • V ⁇ U may be satisfied
  • U ⁇ X may be satisfied. Note that the distance S in the width direction W between the first base end edge and the absorbent core in the second embodiment is the same as the distance S in the first embodiment.
  • the waistband 80 ⁇ / b> Z according to the second embodiment may be further folded on the side away from the skin-side sheet 20 with the front edge of the folded portion 86 as a base point.
  • the portion folded from the front edge of the folded portion 86 as a base point is easily adhered to the body like the folded portion of the first embodiment. Therefore, the tightness of the waistband 80Z to the body can be ensured, and the after leakage can be further suppressed.
  • the front edge 80F of the waistband 80Z according to the second embodiment is constituted by the front edge 86F of the folded portion 86. Therefore, the range in the front-rear direction of the separation region R15 is between the front edge of the fastening tape 90 and the front edge 86F of the folded portion 86. Although not shown, the front edge of the fastening tape 90 is located forward of the front edge 86F of the folded portion 86. Further, the waist elastic member 45 extends forward from the front end edge 86F of the folded portion 86. Therefore, also in the second embodiment, the rigidity of the separation region R15 can be increased by the waist elastic members 45, and the deformation of the separation region R15 can be suppressed.
  • the waistband 80Z it is possible to prevent the waistband 80Z from being deformed toward the crotch region S3, to keep covering the buttocks, and to suppress the back leakage.
  • the outer side of the folded portion 86 is joined to the skin-side sheet 20 via the second joint. Therefore, when the fastening tape 90 is pulled outward in the width direction W at the time of attachment, the outer portion of the waistband 80Z is pulled via the waist elastic member 45 and the skin-side sheet 20, and the waistband is placed on the skin-side. It becomes easy to float up from the sheet 20. It becomes easy to form a pocket by the waistband 80Z.
  • the waist elastic member 45 absorbs between the front edge of the fastening tape 90 in the front-rear direction and the front edge of the facing portion of the waist band 80Z, and the inner edge of the fastening tape 90 in the width direction W. It may be arranged in the second spaced region R16 between the outer edges of the core.
  • the separation region R15 and the second separation region R16 have the same range in the width direction W and different ranges in the front-rear direction.
  • FIG. 7 shows the range in the front-rear direction of the separation region R15 and the second separation region R16.
  • the waist elastic member 45 By arranging the waist elastic member 45 in the second separation region R16, the rigidity of the region on the front side of the facing portion of the waistband 80Z is increased, and it is possible to suppress the facing portion from being pulled down to the crotch side. Therefore, the buttocks can be continuously covered by the waistband 80Z, and the back leakage can be suppressed.
  • FIG. 9 is a schematic sectional view of a disposable diaper according to the third embodiment.
  • 9A is a sectional view of the disposable diaper 10X based on the line 3A-3A shown in FIG. 1
  • FIG. 9B is a cross-sectional view of the disposable diaper 10X based on the line 4A-4A shown in FIG. FIG.
  • the rear edge 23XR of the back sheet 23X of the disposable diaper 10X may be located behind the front edge 84XF of the joint 84X of the waistband 80X. At least a portion of the back sheet 23X may overlap the bonding portion 84X in the thickness direction T. That is, at least a part of the joint portion 84X and at least a part of the back sheet 23X overlap in a plan view of the disposable diaper.
  • the front edge 84XF of the joint 84X of the waistband 80X corresponds to the rear edge of the accommodation space AS of the waistband 80X.
  • the back sheet 23X is continuous from the front waistline region S1 to the rear waistline region S2 through the crotch region S3, and suppresses leakage of bodily fluid to the non-skin-facing surface side T2 of the disposable diaper 10X. Since the back sheet 23X overlaps the joint portion 84X of the waistband 80X, it is possible to suppress the leakage of bodily fluid from the accommodation space AS of the waistband 80X to the non-skin side of the disposable diaper 10X. In addition, the rigidity of the region where the joint portion 84X is provided can be increased by the back sheet 23X, and the upright portion of the waistband 80X can be more easily raised with respect to the joint portion 84X, and the pocket by the waistband 80X can be more easily formed. Become.
  • the length in the front-rear direction L of the region where the back sheet 23X and the joint portion 84X overlap may be 50% or more of the length of the joint portion 84X in the front-rear direction L. Even when the bodily fluid oozes out of the accommodation space AS of the waistband 80X into the joint portion 84X, it is easy to suppress the leakage of the bodily fluid to the non-skin facing surface side T2 of the disposable diaper 10X. More preferably, the region where the back sheet 23X and the joint portion 84X overlap may be provided in the entire longitudinal direction L of the joint portion 84X. Leakage of bodily fluids to the non-skin-facing surface side T2 of the disposable diaper 10X can be further suppressed. Although the rear edge 23XR of the back sheet 23X of the third embodiment is arranged on the front side of the rear edge of the disposable diaper 10X, in a modified example, it matches the rear edge of the disposable diaper 10X. Is also good.
  • the outer edge 23 ⁇ / b> XE of the back sheet 23 ⁇ / b> X may be located outside the inner edge 88 ⁇ / b> XI of the second joint portion 88 of the waistband in the width direction W, and at least one of the back sheet 23 ⁇ / b> X may be located.
  • the portion may overlap the second joint portion 88X in the thickness direction T.
  • the inner edge 88XI of the second joint portion 88X of the waistband 80X corresponds to the outer edge of the accommodation space AS of the waistband.
  • the back sheet 23X overlaps the second joint portion 88X, leakage of bodily fluid from the accommodation space AS of the waistband 80X to the non-skin facing surface side T2 of the disposable diaper can be suppressed.
  • the rigidity of the region where the second joint portion 88X is provided can be increased by the back sheet 23X, and the upright portion of the waistband 80X can be more easily raised with respect to the second joint portion 88X, and the pocket by the waistband 80X can be reduced. It becomes easier to form.
  • the length in the width direction W of the region where the back sheet 23X and the second bonding portion 88X overlap may be 50% or more of the length in the width direction W of the second bonding portion 88X. Even if the bodily fluid oozes out of the accommodation space AS of the waistband 80X into the second joint portion 88X, it is easy to suppress the leakage of the bodily fluid to the non-skin facing surface side T2 of the disposable diaper. More preferably, the region where the back sheet 23X and the second joint portion 88X overlap may be provided in the entire region of the second joint portion 88X in the width direction LW. Leakage of bodily fluids to the non-skin facing surface side T2 of the disposable diaper can be further suppressed.
  • the outer edge 23XE of the back sheet 23X may be located on the inner side in the width direction W than the outer edge 88XE of the second joint portion 88. Also according to this configuration, since at least a part of the back sheet 23X overlaps the second joint portion 88X in the thickness direction T, leakage of body fluid can be suppressed.
  • the back sheet 23X may overlap the waist elastic member 45 in the thickness direction T and be arranged in the waist region R14.
  • the rigidity of the waist region R14 can be increased, and the back leakage can be suppressed.
  • a disposable diaper capable of securing a space for accommodating a pocket by a waistband and suppressing occurrence of back leakage.
  • Disposable diaper 10F Front edge 10R of disposable diaper: Rear edge 20 of disposable diaper 20: Skin side sheet 21: Top sheet 22: Side sheet 23: Back sheet 24: Exterior sheet 25: Non-skin side Side sheet 31: Absorbing core 31R: Rear edge 42 of absorbing core: Leg elastic member 45: Waist elastic member (reinforcement sheet) 45F: front end edge of waist elastic member 45R: rear end edge of waist elastic member 60: leak-proof gather 61: leak-proof elastic member 65: leg opening 66: waist openings 80, 80X, 80Z: waist band 80F: Waistband front edge 80R: Waistband rear edge 81: Sheet layer 811: First nonwoven layer 812: Second nonwoven layer 813: Film layer 82: Band elastic member 83: Opposing portion 83F: Front edge 83R of the opposing portion.
  • Rear edge 84 of the facing portion Joint 84F: Front edge of the joint (second base edge) 84R: rear end edge of the joined portion 85: non-joined portion (upright portion) 85F: front edge 85R of the non-joined portion: rear edge 86 of the non-joined portion: folded portion 86R: rear edge 87 of the folded portion: side joint portion 87I: inner edge of the side joint portion (first base edge) 90: Fastening tape 90F: Front edge 90R of fastening tape 90: Rear edge 92 of fastening tape: Base 93: Locking portion 93F: Front edge 93R of locking portion: Rear edge 95 of locking portion 95: Target portion FL , FL1: fold R11: tape arrangement area R12: waist opening area R12CL: center in the front-rear direction of waist opening area R13: locking arrangement area R14: waist area R14CL: center in the front-rear direction of waist area R15: separation area R16: 2 Separation area AS: accommodation space S: accommodation

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2019/025468 2018-06-29 2019-06-26 使い捨ておむつ WO2020004499A1 (ja)

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Publication number Priority date Publication date Assignee Title
WO2021193151A1 (ja) * 2020-03-26 2021-09-30 大王製紙株式会社 連結式使い捨て着用物品
US11801169B2 (en) 2019-05-31 2023-10-31 The Procter & Gamble Company Absorbent article having a waist gasketing element
US11931233B2 (en) 2020-05-05 2024-03-19 The Procter & Gamble Company Absorbent articles including improved elastic panels
JP7470606B2 (ja) 2020-09-14 2024-04-18 花王株式会社 吸収性物品

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JP2016112341A (ja) * 2014-12-18 2016-06-23 花王株式会社 吸収性物品
US20180055698A1 (en) * 2015-03-31 2018-03-01 Kimberly-Clark Worldwide, Inc. Absorbent article with selectively positioned waist containment member

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JP4996508B2 (ja) * 2008-03-06 2012-08-08 王子ネピア株式会社 吸収性物品
JP5175702B2 (ja) * 2008-12-09 2013-04-03 王子ネピア株式会社 使い捨ておむつ
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JP2016112341A (ja) * 2014-12-18 2016-06-23 花王株式会社 吸収性物品
US20180055698A1 (en) * 2015-03-31 2018-03-01 Kimberly-Clark Worldwide, Inc. Absorbent article with selectively positioned waist containment member

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11801169B2 (en) 2019-05-31 2023-10-31 The Procter & Gamble Company Absorbent article having a waist gasketing element
US11938004B2 (en) 2019-05-31 2024-03-26 The Procter & Gamble Company Absorbent article having a waist gasketing element
WO2021193151A1 (ja) * 2020-03-26 2021-09-30 大王製紙株式会社 連結式使い捨て着用物品
CN115038419A (zh) * 2020-03-26 2022-09-09 大王制纸株式会社 连结式一次性穿着物品
CN115038419B (zh) * 2020-03-26 2023-08-29 大王制纸株式会社 连结式一次性穿着物品
JP7455630B2 (ja) 2020-03-26 2024-03-26 大王製紙株式会社 連結式使い捨て着用物品
US11931233B2 (en) 2020-05-05 2024-03-19 The Procter & Gamble Company Absorbent articles including improved elastic panels
JP7470606B2 (ja) 2020-09-14 2024-04-18 花王株式会社 吸収性物品

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