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WO2024111607A1 - Tampon absorbant et article absorbant - Google Patents

Tampon absorbant et article absorbant Download PDF

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Publication number
WO2024111607A1
WO2024111607A1 PCT/JP2023/041910 JP2023041910W WO2024111607A1 WO 2024111607 A1 WO2024111607 A1 WO 2024111607A1 JP 2023041910 W JP2023041910 W JP 2023041910W WO 2024111607 A1 WO2024111607 A1 WO 2024111607A1
Authority
WO
WIPO (PCT)
Prior art keywords
vertical direction
pad
absorbent
absorbent pad
fastening
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/JP2023/041910
Other languages
English (en)
Japanese (ja)
Inventor
章之 植田
綾子 牧野
拓也 幸田
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.)
Kao Corp
Original Assignee
Kao 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
Application filed by Kao Corp filed Critical Kao Corp
Publication of WO2024111607A1 publication Critical patent/WO2024111607A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • 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
    • A61F13/505—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with separable parts, e.g. combination of disposable and reusable parts
    • 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
    • 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
    • A61F13/62—Mechanical fastening means ; Fabric strip fastener elements, e.g. hook and loop
    • 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
    • A61F13/66—Garments, holders or supports not integral with absorbent pads
    • A61F13/68—Garments, holders or supports not integral with absorbent pads abdominal enclosing type
    • A61F13/70—Garments, holders or supports not integral with absorbent pads abdominal enclosing type with openable or removable crotch portion

Definitions

  • the present invention relates to an absorbent pad that is removably attached to a holder that is attached around the waist of the wearer.
  • a separate type is known that includes an absorbent pad that absorbs and retains body fluids such as urine, and a holder that is attached in a ring shape around the waist of the wearer and holds the absorbent pad placed in the crotch area of the wearer, and the absorbent pad is configured to be freely attached and detached to the holder.
  • a pad side fastening structure that can be attached and detached to the fastening structure (holder side fastening structure) of the holder is provided at the end area in the vertical direction (the direction corresponding to the front and back direction of the wearer) of the absorbent pad.
  • the present invention relates to an absorbent pad which comprises a top sheet which is positioned closer to the wearer's skin when worn, a back sheet which is positioned farther from the wearer's skin, and an absorbent body which is positioned between the top sheet and the back sheet, has a vertical direction which corresponds to the front-to-back direction passing through the wearer's crotch and a horizontal direction which is perpendicular to the vertical direction, and can be used by being removably fixed to a holder which is worn in a ring shape around the wearer's waist.
  • the end regions in the longitudinal direction have pad-side fastening structures that are detachable from the holder.
  • the pad side fastening structure has a fastening force against the holder that varies partially in the vertical direction, and the fastening force of the portion located on the outer side in the vertical direction is weaker than that of the portion located on the inner side in the vertical direction.
  • FIG. 1 is a perspective view of one embodiment of an absorbent pad of the present invention.
  • FIG. 2 is a plan view showing a schematic view of the skin-facing side (top sheet side) of the absorbent pad shown in FIG. 1 in a maximum extended state.
  • 3A and 3B are cross-sectional views showing schematic cross sections along the horizontal and thickness directions at a predetermined position of the absorbent pad shown in FIG. 2, where FIG. 3A shows a cross section along line II in FIG. 2, FIG. 3B shows a cross section along line II-II in FIG. 2, and FIG. 3C shows a cross section along line III-III in FIG. 2.
  • FIG. 4 is an enlarged schematic plan view of a longitudinal end region on the ventral side of the absorbent pad shown in FIG. 2.
  • FIG. 5 is a diagram showing an example of use of the absorbent pad shown in FIG. 1, and is a perspective view of a disposable diaper including a holder and the absorbent pad attached thereto.
  • FIG. 6 is a view corresponding to FIG. 4 showing another embodiment of the absorbent pad of the present invention.
  • FIG. 7 is a view corresponding to FIG. 4 showing still another embodiment of the absorbent pad of the present invention.
  • FIG. 8 is a view corresponding to FIG. 4 showing still another embodiment of the absorbent pad of the present invention.
  • FIG. 9 is a view corresponding to FIG. 4 showing still another embodiment of the absorbent pad of the present invention.
  • FIG. 10 is a view corresponding to FIG. 4 showing still another embodiment of the absorbent pad of the present invention.
  • FIG. 11 is a view corresponding to FIG. 4 showing still another embodiment of the absorbent pad of the present invention.
  • the absorbent pad constituting the separate type absorbent article is required not to be unintentionally peeled off from the holder while the absorbent article is being worn.
  • the component of the absorbent pad that is particularly closely related to such required performance is the pad side fastening structure, and in order to fully meet such required performance, it is important to appropriately design the pad side fastening structure.
  • the absorbent pad is also required to be relatively easy to peel off from the state where it is fastened to the holder via the pad side fastening structure. The ease of peeling off the absorbent pad from the holder is particularly important when the wearer of the absorbent article is, for example, an infant undergoing toilet training.
  • the present invention relates to an absorbent pad that has excellent fastening performance to a holder, is unlikely to be unintentionally peeled off from the holder while being worn, and can be easily peeled off from the holder by the wearer himself.
  • Other features, advantages and embodiments of the present invention are described below.
  • FIG. 1 to 4 show an absorbent pad 1, which is one embodiment of the absorbent pad of the present invention.
  • FIG. 5 shows a disposable diaper 10 (hereinafter also referred to as "diaper 10") including an absorbent pad 1 and a holder 11 that holds the absorbent pad 1 on a wearer, as an example of the use of the absorbent pad of the present invention.
  • the diaper 10 is an embodiment of the absorbent article of the present invention, that is, an absorbent article that includes the absorbent pad of the present invention and a holder to which the absorbent pad can be attached. As shown in FIG.
  • the diaper 10 is an absorbent pad 1 and a holder 11 that are connected via a pad-side fastening structure 8 and a holder-side fastening structure 14, and has a waist opening WH of the holder 11 and a pair of leg openings LH, LH that are defined by the lower end of the holder 11 in the height direction HD and both side edges along the longitudinal direction (vertical direction X to be described later) of the absorbent pad 1.
  • the holder 11 is not a component of the absorbent pad 1.
  • the diaper 10 it is only necessary to replace only the absorbent pad 1 with a new one while leaving the holder 11 as it is, so that the amount of waste disposal and carbon dioxide emissions are reduced compared to non-separate type absorbent articles, and this contributes to reducing the burden on the environment.
  • the absorbent pad 1 is removably fixed to the holder 11 while the diaper 10 is being worn, the absorbent pad 1 can be easily replaced with a new one, and the burden of replacing the diaper 10 is significantly reduced compared to conventional non-separate type absorbent articles.
  • the absorbent pad 1 is used by being detachably fixed to a holder 11 that is attached in a ring shape around the waist of a wearer.
  • the holder 11 will be briefly described with reference to Fig. 5.
  • the holder 11 is attached in a ring shape around the waist of a wearer and holds the absorbent pad 1 in a state where it is attached to the wearer, and has a height direction HD along the height direction of the wearer and a circumferential direction CD along the waist direction.
  • the holder 11 has a ventral side portion 11F arranged on the ventral side (front side) of the wearer and a back side portion 11R arranged on the back side (rear side) of the wearer, and is provided with a holder main body portion 12 that constitutes the main body of the holder 11.
  • the holder main body portion 12 is mainly composed of a sheet-like member such as a nonwoven fabric, and is typically composed of a laminated structure of an outer layer sheet that forms a non-skin-facing surface (outer surface) of the holder main body portion 12 and an inner layer sheet that forms a skin-facing surface (inner surface) of the holder main body portion 12.
  • the holder 11 is annular in shape, with both longitudinal ends of the holder body 12 of each of the abdominal portion 11F and the back portion 11R joined together by known joining means such as fusion or adhesive, and has a pair of joining parts S, S between the abdominal portion 11F and the back portion 11R, and a waist opening WH.
  • the joining parts S correspond to side seal parts in a general non-separate type pants-type disposable diaper.
  • the holder body 12 of each of the abdominal portion 11F and the back portion 11R has a plurality of elastic members 13 arranged intermittently in the height direction HD so as to be stretchable in a direction perpendicular to the height direction HD, thereby making the holder 11 stretchable in the circumferential direction CD.
  • a holder side fastening structure 14 is arranged on the non-skin facing surface (outer surface) of the holder body 12, and the absorbent pad 1 can be detachably fastened to the holder 11 by fastening the pad side fastening structure 8 of the absorbent pad 1 to the holder side fastening structure 14. Since the holder 11 does not include an absorbent that absorbs and retains moisture, if washable materials are used as components of the holder main body 12, the holder 11 can be washed and reused. The fact that the holder 11 is washable leads to a reduction in the amount of waste and carbon dioxide emissions, and can contribute to reducing the burden on the environment.
  • holder 11 is merely one embodiment of a holder to which the absorbent pad of the present invention can be applied, and the holder to which the absorbent pad of the present invention can be applied may have a holder-side fastening structure that can be fastened to the pad-side fastening structure of the absorbent pad, and is not limited to holder 11.
  • the holder to which the absorbent pad of the present invention can be applied may be annular when attached to the body, and may be annular in advance like holder 11, or may be a long strip before being attached to the body, and may be annular when attached by engaging one end and the other end in the longitudinal direction.
  • skin-facing surface refers to the surface of a worn article such as an absorbent article, holder, or absorbent pad, or a component thereof (e.g., the absorbent body of an absorbent pad), which faces the skin of the wearer when the worn article is worn
  • non-skin-facing surface refers to the surface of the worn article or a component thereof, which faces the side opposite the skin when the worn article is worn.
  • the absorbent pad 1 comprises a top sheet 3 located closer to the wearer's skin when worn, a back sheet 4 located farther from the wearer's skin, and an absorbent body 5 located between the sheets 3, 4, and has a vertical direction X and a horizontal direction Y perpendicular thereto.
  • the vertical direction X of the absorbent pad 1 corresponds to the front-to-rear direction passing through the crotch of the wearer and also corresponds to the height direction HD of the holder 11, and the horizontal direction Y of the absorbent pad 1 corresponds to the circumferential direction CD of the holder 11.
  • the absorbent pad 1 has a crotch portion M arranged in the crotch portion of the wearer, a ventral portion F arranged on the ventral side (front side) of the wearer relative to the crotch portion M, and a back portion R arranged on the back side (rear side) of the wearer relative to the crotch portion M.
  • the crotch portion M is located in the center of the absorbent pad 1 in the vertical direction X, and includes an excretory portion facing portion (not shown) that faces an excretory portion such as the penis of the wearer when worn. As shown in Fig.
  • the absorbent pad 1 has a rectangular shape in a plan view in the unfolded and maximally extended state as shown in Fig. 2, and is formed symmetrically on one side and the other side with respect to a lateral center line CLy.
  • the lateral center line CLy is an imaginary straight line extending in the vertical direction X, dividing the absorbent pad 1 in the unfolded and maximally extended state as shown in Fig. 2 in half in the lateral direction Y.
  • unfolded and maximum stretched state refers to a state in which a worn article such as an absorbent article, holder, or absorbent pad is spread out flat to an unfolded state, and the elastic members of each part of the worn article in the unfolded state are stretched to their maximum extent until they are the same as the designed dimensions, i.e., the dimensions when unfolded flat with all influence of the elastic members eliminated.
  • a worn article such as an absorbent article, holder, or absorbent pad is spread out flat to an unfolded state
  • the elastic members of each part of the worn article in the unfolded state are stretched to their maximum extent until they are the same as the designed dimensions, i.e., the dimensions when unfolded flat with all influence of the elastic members eliminated.
  • the absorbent pad 1 comprises an absorbent body 2 including a top sheet 3, a back sheet 4, and an absorbent body 5, a pair of first leakage prevention cuffs 6, 6 arranged along both sides of the absorbent body 2 along the vertical direction X, and a pair of second leakage prevention cuffs 7, 7 arranged at both end regions of the absorbent body 2 in the vertical direction X.
  • the first leakage prevention cuffs 6 are located at the end regions in the horizontal direction Y to prevent leakage of excrement outward in the horizontal direction Y, and can be called "lateral leakage prevention cuffs".
  • the second leakage prevention cuffs 7 are located at the end regions in the vertical direction X to prevent leakage of excrement outward in the vertical direction X, and can be called “vertical leakage prevention cuffs".
  • the "vertical end regions” referred to here can be the end regions in the vertical direction X (regions other than the center in the vertical direction X) when the absorbent pad 1 is divided into thirds in the vertical direction X.
  • the absorbent body 2 is the main body of the absorbent pad 1 and has the function of absorbing and retaining excrement such as urine.
  • the absorbent body 2 has a long shape in the vertical direction X, and extends in the vertical direction X from the ventral side part F to the dorsal side part R with its longitudinal direction aligned with the vertical direction X.
  • the top sheet 3 forms the skin-facing surface of the absorbent body 2 and can come into contact with the wearer's skin when worn.
  • the back sheet 4 forms the non-skin-facing surface of the absorbent body 2.
  • the top sheet 3 contacts the skin-facing surface of the absorbent body 5 and covers its entire area, and the back sheet 4 contacts the non-skin-facing surface of the absorbent body 5 and covers its entire area.
  • the absorbent body 5 is composed of an absorbent core 51 capable of absorbing and retaining bodily fluids, and a core wrap sheet 52 that covers the outer surface including the skin-facing surface and non-skin-facing surface of the absorbent core 51.
  • the absorbent body 5 only needs to include at least the absorbent core 51, and the core wrap sheet 52 is not necessary.
  • the multiple members 3, 4, and 5 that make up the absorbent body 2 are joined together by known joining means such as adhesives.
  • a liquid-permeable sheet can be used as the top sheet 3, and examples thereof include nonwoven fabrics produced by various manufacturing methods, perforated nonwoven fabrics which are nonwoven fabrics having through-holes, uneven nonwoven fabrics in which an uneven shape is imparted to at least one surface of the nonwoven fabric, and perforated films which are resin films having through-holes.
  • the top sheet 3 may have a single-layer structure, or a laminate structure in which one or more types of layers are laminated.
  • the back sheet 4 may be a liquid-impermeable or liquid-slightly permeable or water-repellent sheet, and examples thereof include nonwoven fabric, resin film, and laminates of resin film and nonwoven fabric.
  • the absorbent core 51 typically contains a water-absorbing material as a main component, and contains one or more types of water-absorbing material selected from a fiber material such as wood pulp and a water-absorbing polymer.
  • the water-absorbing material may be uniformly distributed throughout the absorbent core 51, or may be unevenly distributed in a predetermined direction such as the longitudinal direction X, the transverse direction Y, or the thickness direction.
  • the absorbent core 51 may be a stacking type mainly made of a fiber material, or a sheet type including a fiber sheet and water-absorbing polymer particles fixed thereto.
  • the stacking type absorbent core can be manufactured, for example, by using a known stacking device equipped with a stacking drum.
  • the sheet type absorbent core has a configuration in which water-absorbing polymer particles are interposed between two opposing fiber sheets.
  • the core wrap sheet 52 has liquid permeability and is typically made of paper, nonwoven fabric, or the like.
  • the absorbent body 5 may have a recess having an opening on at least one of the skin-facing surface and the non-skin-facing surface.
  • the recess may be, for example, a leak-proof groove having an opening on the skin-facing surface of the absorbent body 5.
  • the absorbent body 5 may have a partially different density, and in this case, the relatively high-density portion may be a portion formed by a compression process such as embossing.
  • the first leakproof cuff 6 includes a first leakproof sheet 60 which constitutes the main body of the first leakproof cuff 6, and a first elastic member 61 which is fixed to the first leakproof sheet 60 and is stretchable in the vertical direction X.
  • the first leakproof sheet 60 forms a part of the skin-facing surface of the absorbent pad 1.
  • the first leakproof sheet 60 is folded back in the horizontal direction Y, and the first elastic member 61 is disposed between the opposing first leakproof sheets 60, 60 by the folding back.
  • the first leakproof cuff 6 (first leakproof sheet 60) is disposed continuously along the side portion of the absorbent main body 2 along the vertical direction X, over substantially the entire length of the absorbent main body 2 in the vertical direction X.
  • the first leakproof cuff 6 has, at least in the crotch portion M, a standing portion 62 that stands toward the wearer's skin when the absorbent pad 1 (diaper 10) is worn.
  • the standing portion 62 stands toward the wearer's skin from a fixed portion 63 as a standing point.
  • the standing portion 62 is a portion of the first leakproof sheet 60 that is not fixed to another member.
  • the fixed portion 63 is a portion where the first leakproof sheet 60 is fixed to another member by a known joining means such as an adhesive or fusion, and in the illustrated embodiment, the other member is the topsheet 3.
  • the standing inhibition portions 64 are formed in the ventral side portion F and the dorsal side portion R, and the portion of the first leakproof cuff 6 along the longitudinal direction X sandwiched between the standing inhibition portions 64, 64 is the standing portion 62.
  • the standing inhibition portion 64 is a portion of the first leakproof sheet 60 at the same position in the transverse direction Y as the standing portion 62, which is joined to another member such as the top sheet 3 and/or a portion of the first leakproof sheet 60 other than the standing portion 62 by a known joining means such as an adhesive or fusion.
  • a pair of rising inhibition parts 64, 64 are formed at both end regions in the longitudinal direction X of the first leakage preventing cuff 6, when the absorbent pad 1 (diaper 10) is worn, a rising part 62, which is a part of the first leakage preventing cuff 6 sandwiched between the rising inhibition parts 64, 64, rises toward the wearer's skin from the fixed part 63 as a rising starting point due to contraction of the first elastic member 61. This prevents excrement such as urine excreted by the wearer from leaking outward in the lateral direction Y from the absorbent pad 1, which is known as lateral leakage.
  • any material that is used as a leakproof cuff in this type of absorbent article can be used without any particular limitation, such as a single-layer or multi-layer water-repellent nonwoven fabric, a laminate of a resin film and a nonwoven fabric, etc.
  • leg cuffs 65 are provided at the leg edges of the absorbent pad 1 that correspond to the wearer's legs.
  • the leg edges typically include both side edges along the vertical direction X of the absorbent pad 1 in the crotch portion M.
  • the leg cuffs 65 are configured to include a first leakproof sheet 60 constituting the first leakproof cuff 6 and an elastic member 66 for forming the leg cuffs.
  • the elastic member 66 for forming the leg cuffs extending in the vertical direction X is fixed to the fixing portion of the first leakproof sheet 60 with the other member so as to be stretchable in the same direction, thereby forming the leg cuffs 65.
  • the leg cuff forming elastic members 66 are arranged at least at the side edges of the absorbent pad 1 along the longitudinal direction X in the crotch portion M. When the absorbent pad 1 is worn or in its natural state, the contraction of the leg cuff forming elastic members 66 forms substantially continuous leg gathers in the longitudinal direction X at the leg edges.
  • the second leakproof cuff 7 includes a second leakproof sheet 70 which constitutes the main body of the second leakproof cuff 7, and a second elastic member 71 which is fixed to the second leakproof sheet 70 and is stretchable in the lateral direction Y.
  • the second leakproof sheet 70 forms at least a part of the skin-facing surface of the ventral portion F or the dorsal portion R of the absorbent pad 1.
  • a sheet similar to the first leakproof sheet 60 can be used as the second leakproof sheet 70.
  • the configuration of the second leakage preventing cuff 7 is the same in the ventral portion F and the dorsal portion R, and unless otherwise specified, the description of the second leakage preventing cuff 7 in one of the ventral portion F and the dorsal portion R also applies, as appropriate, to the other second leakage preventing cuff 7.
  • the second leakproof sheet 70 has a rectangular shape in a plan view and covers almost the entire area of the skin-facing surface of the end region in the vertical direction X of the absorbent body 2.
  • the vertical outer end 70X1 located outside the vertical direction X of both ends of the second leakproof sheet 70 in the vertical direction X coincides with the vertical end (vertical end on the ventral side F side or the dorsal side R side) of the absorbent body 2 on which the second leakproof sheet 70 is arranged, and both ends 70Y, 70Y in the horizontal direction Y of the second leakproof sheet 70 are near both ends in the horizontal direction Y of the absorbent body 2 (both side edges along the vertical direction X).
  • the vertical outer end 70X1 of the second leakproof sheet 70 coincides with the vertical outer end 1X of the absorbent pad 1, and the horizontal end 70Y of the second leakproof sheet 70 is near the horizontal outer end (side edge along the vertical direction X) 1Y of the absorbent pad 1.
  • the vertical inner end 70X2 located on the inside of the vertical direction X extends parallel to the horizontal direction Y.
  • the second leakproof sheet 70 has a fixed portion 72 (hatched area in Fig. 4) that is fixed to another member, and a non-fixed portion 75 that is not fixed to another member.
  • the "other member" to which the second leakproof sheet 70 is fixed is a member that is disposed opposite the second leakproof sheet 70, such as the top sheet 3 or the first leakproof sheet 60.
  • the second leakproof sheet 70 and the other member are joined by a fixing means 79 (see Fig. 3(a)).
  • the arrangement area of the fixing means 79 is the same as the fixing portion 72 (hatched area in Fig. 4).
  • fixing means 79 There are no particular limitations on the fixing means 79, and known fixing means such as adhesives or fusion can be used.
  • the fixing portion 72 includes a continuous fixing portion 73 in which the fixing portion between the second leakproof sheet 70 and other members extends continuously over the entire length of the absorbent body 2 in the horizontal direction Y, and a discontinuous fixing portion 74 located inward in the vertical direction X from the continuous fixing portion 73 and adjacent to the continuous fixing portion 73, in which the fixing portion between the second leakproof sheet 70 and other members exists intermittently in the horizontal direction Y, and a non-fixed portion 75 is located between a pair of discontinuous fixing portions 74, 74 adjacent to each other in the horizontal direction Y.
  • a second elastic member 71 extending in the horizontal direction Y is arranged to be stretchable in the horizontal direction Y at an end portion in the vertical direction X (an inner end portion in the vertical direction X) on the vertical inner end 70X2 side of the second leak-proof sheet 70.
  • the second elastic member 71 is arranged to straddle a pair of discontinuous fixed portions 74, 74 and a non-fixed portion 75 therebetween in the horizontal direction Y, but the arrangement pattern of the second elastic member 71 is not particularly limited in the present invention.
  • the arrangement pattern of the second elastic member 71 is not particularly limited in the present invention.
  • the arrangement pattern of the second elastic member 71 is not particularly limited in the present invention.
  • the arrangement pattern of the second elastic member 71 is not particularly limited in the present invention.
  • the second elastic member 71 may be arranged only in an area overlapping with the non-fixed portion 75 in a plan view, and may not extend to a pair of discontinuous fixed portions 74, 74 on both sides of the non-fixed portion 75 in the horizontal direction Y.
  • the discontinuous fixed portion 74 may not be arranged in an area overlapping with the second elastic member 71 and its virtual extension line in a plan view (an area at the same position as the second elastic member 71 in the vertical direction X).
  • the number of second elastic members 71 arranged is not particularly limited, and may be one or more.
  • the inner end portion in the longitudinal direction X of the second leakproof sheet 70 is folded back toward the skin-facing side or the non-skin-facing side of the second leakproof sheet 70, and two second elastic members 71 are arranged between the opposing second leakproof sheets 70, 70 formed by the folding back.
  • the contraction of the second elastic member 71 causes the non-fixed portion 75 of the second leak-proof sheet 70 to stand up toward the wearer's skin, and an internal space 76 (see Figure 3(b)) is formed between the standing non-fixed portion 75 and another member (such as the absorbent main body 2) facing it, and a pocket portion 78 (see Figure 1) is formed having an opening 77 that opens inward in the vertical direction X.
  • the absorbent pad 1 (diaper 10) is worn, if excrement excreted in the crotch portion M of the absorbent pad 1 transfers to the ventral portion F or dorsal portion R, the excrement transferring from the crotch portion M is accommodated in the internal space 76 of the pocket portion 78 through the opening 77 and does not transfer to the holder 11 to which the absorbent pad 1 is attached. Therefore, by providing the pocket portion 78 on the absorbent pad 1, the inconvenience of excrement adhering to the holder 11 is prevented, and the usable period of the holder 11 is extended.
  • the absorbent pad 1 has a pad-side fastening structure 8 at the end region in the vertical direction X that can be attached to and detached from the holder 11.
  • the pad-side fastening structure 8 is provided on the skin-facing surface (inner surface) of the absorbent pad 1.
  • the pad-side fastening structure 8 is divided into a plurality of fastening elements 8A, 8B in the vertical direction X, and the plurality of fastening elements 8A, 8B are arranged intermittently in the vertical direction X. More specifically, the pad-side fastening structure 8 of this embodiment includes a fastening element 8A (outermost fastening structure 8A) located at the outermost position in the vertical direction X, and a fastening element 8B (inner fastening structure 8B) located on the inner side of the fastening element 8A in the vertical direction X.
  • Each of the fastening elements 8A, 8B has a rectangular shape in a plan view, and is continuous over substantially the entire length of the absorbent pad 1 in the horizontal direction Y with its longitudinal direction aligned with the horizontal direction Y, excluding both ends in the horizontal direction Y.
  • the total length in the horizontal direction Y of the fastening elements 8A, 8B intermittently arranged in the vertical direction X is the same as each other, and more specifically, the fastening elements 8A, 8B have the same shape and dimensions as each other in a plan view.
  • “same” here includes a case where the compared total lengths are completely the same as each other and a case where they are slightly different but substantially the same.
  • the absolute value of the difference from the average value of the total length in the horizontal direction of the fastening elements is within 90% of the average value.
  • the end on the outer side in the vertical direction X is disposed at a distance L1 in the vertical direction X from the outer end 1X in the vertical direction of the absorbent pad 1 (the absorbent main body 2).
  • the fastening element 8B is disposed at a distance L2 in the vertical direction X from the fastening element 8A and further outward in the vertical direction X than the second elastic member 71 disposed in the non-fixed portion 75 of the second leakproof sheet 70.
  • the distance L1 (see FIG. 4) between the fastening element 8A and the outer end 1X in the vertical direction of the absorbent pad 1 is preferably 30 mm or less, more preferably 25 mm or less.
  • the distance L1 may be zero. That is, in the present invention, the outer end in the vertical direction X of the pad-side fastening structure 8 (fastening element 8A) may coincide with the outer end 1X in the vertical direction of the absorbent pad 1.
  • the distance L2 (see FIG. 4) between adjacent fastening elements 8A, 8B in the longitudinal direction X is preferably 1 mm or more, more preferably 3 mm or more, and preferably 50 mm or less, more preferably 40 mm or less.
  • the present invention includes a configuration in which three or more fastening elements are intermittently arranged in the longitudinal direction X in one end region in the longitudinal direction X of the absorbent pad (see FIG. 7), and it is preferable that the distance between adjacent fastening elements in the longitudinal direction X in such a configuration is also set within the above range. Note that the present invention also includes a configuration in which the distance L2 is zero.
  • the pad-side fastening structure 8 is fixed to the skin-facing surface of the second leak-proof sheet 70 that covers the skin-facing surface (top sheet 3, etc.) of the absorbent body 2, and is not directly fixed to the skin-facing surface of the absorbent body 2. If the absorbent pad 1 does not have the second leak-proof sheet 70 (second leak-proof cuff 7) and the pad-side fastening structure 8 is directly fixed to the skin-facing surface of the absorbent body 2, there is a concern that when excrement excreted in the crotch part M of the absorbent pad 1 moves to the abdominal part F or the dorsal part R, the excrement will adhere to the holder 11, shortening the period of use of the holder 11. However, in the absorbent pad 1 of this embodiment, the second leak-proof sheet 70 is interposed between the pad-side fastening structure 8 and the skin-facing surface of the absorbent body 2, so such concerns are eliminated.
  • the pad-side fastening structure 8 may be any known detachable fastening structure that can be detachably attached to the holder-side fastening structure 14 (see FIG. 5) of the holder 11, and any known detachable fastening structure may be used without any particular restrictions.
  • one or both of the pad-side fastening structure 8 and the holder-side fastening structure 14 may have an adhesive portion formed by applying an adhesive, and the pad-side fastening structure 8 may be detachably attached to the holder-side fastening structure 14 via the adhesive portion.
  • a mechanical hook-and-loop fastener is used as the fastening structure including the pad-side fastening structure 8 and the holder-side fastening structure 14.
  • the term "mechanical hook-and-loop fastener” refers to a fastener that is a set of a surface member (male member) having a hook material (engagement member) made of hook-shaped protrusions arranged on one surface, and a surface member (female member) having a loop material made of pile-shaped protrusions arranged on one surface.
  • a specific example of a mechanical hook-and-loop fastener is Magic Tape (registered trademark).
  • the pad-side fastening structure 8 is a male member of a mechanical hook-and-loop fastener, and typically has a configuration in which a large number of hook members are arranged on the surface of a base material made of a resin film, a woven fabric, a nonwoven fabric, etc.
  • the holder-side fastening structure 14 is a female member of a mechanical hook-and-loop fastener, and includes a base material and a fastening region provided on the non-skin-facing surface (outer surface) of the base material, to which the pad-side fastening structure 8 can be fastened.
  • the fastening force of the pad-side fastening structure 8 to the holder 11 varies partially in the vertical direction X, and the fastening force is weaker in the portion located on the outer side of the vertical direction X than in the portion located on the inner side of the vertical direction X.
  • the pad-side fastening structure 8 includes a fastening element 8A located at the outermost position in the vertical direction X and a fastening element 8B located on the inner side in the vertical direction X than the fastening element 8A.
  • the fastening element 8A has a weaker fastening force to the holder 11 than the fastening element 8B.
  • the portion of the pad-side fastening structure 8 located on the outer side in the vertical direction X, represented by the fastening element 8A, is usually the portion that is first picked up with the fingers and peeled off from the holder 11 when the wearer of the diaper 10 takes off the diaper 10 by himself, and since the fastening force of this portion to the holder 11 is weaker than that of other portions (portions located on the inner side in the vertical direction X) of the pad-side fastening structure 8, the operation can be smoothly performed even when the force to peel off the absorbent pad 1 from the holder 11 is relatively weak.
  • the portion of the pad-side fastening structure 8 located on the inner side in the vertical direction X, represented by the fastening element 8B, has a relatively strong fastening force to the holder 11, so that the absorbent pad 1 is unlikely to be unintentionally peeled off from the holder 11 while the diaper 10 is being worn.
  • the absorbent pad of the present invention represented by the absorbent pad 1
  • the absorbent article of the present invention represented by the diaper 10 is suitable as an absorbent article for toilet training for infants.
  • the pad side fastening structure 8 (fastening elements 8A, 8B) is continuous in the horizontal direction Y. Therefore, as compared with the case where the pad side fastening structure is intermittently arranged in the horizontal direction, as described in, for example, Figure 1 of Patent Document 2, the fastening force of the absorbent pad to the holder is stronger, and the inconvenience of the absorbent pad being unintentionally peeled off from the holder can be more effectively prevented.
  • the "pad side fastening structure is continuous in the horizontal direction” mentioned here includes 1) a form in which a single pad side fastening structure extends continuously in the horizontal direction (see Fig. 2, Fig.
  • a form in which a plurality of pad side fastening structures are intermittently arranged in the horizontal direction (see Fig. 8), where the condition for the form 2) is that the interval between adjacent pad side fastening structures in the horizontal direction is very narrow, and therefore the single pad side fastening structure can be essentially regarded as being continuous in the horizontal direction.
  • the interval in the form 2) is preferably 20 mm or less, more preferably 10 mm or less.
  • the method of partially varying the fastening force of the pad side fastening structure to the holder as described above is not particularly limited, and various methods can be adopted within the scope of the invention without departing from the spirit of the invention.
  • the method there is a method in which the area of a portion located on the outer side of the vertical direction X of the pad-side fastening structure is made different from that of a portion located on the inner side of the vertical direction X, i.e., the relationship of "area of the portion located on the outer side of the vertical direction X ⁇ area of the portion located on the inner side of the vertical direction X" is established (hereinafter, also referred to as "Method A").
  • Method A Another example of the method is to make the fastening force per unit area different between the part located on the outer side of the vertical direction X of the pad-side fastening structure 8 and the part located on the inner side of the vertical direction X, in other words, to make the configuration of the fastening structure different (hereinafter, also referred to as "Method B").
  • Method B The absorbent pads shown in Figures 9 to 11, which will be described later, employ the method B.
  • both of the methods A and B can be adopted.
  • a portion (fastening element 8A) located on the outer side of the pad-side fastening structure 8 in the vertical direction X does not overlap with the absorbent body 5 (absorbent core 51), and a portion (fastening element 8B) located on the inner side of the pad-side fastening structure 8 in the vertical direction X overlaps with the absorbent body 5 (absorbent core 51).
  • the absorbent body 5 (absorbent core 51) has higher rigidity than other members of the absorbent pad 1, and the area of the absorbent pad 1 that overlaps with the absorbent body 5 in a plan view is a high-rigidity area that has higher rigidity and lower flexibility than the area that does not overlap with the absorbent body 5 in a plan view. If the pad-side fastening structure 8 is disposed only in this high-rigidity area, there is a concern that the holder 11 fixed via the pad-side fastening structure 8 may come off while the diaper 10 is being worn.
  • the absorbent pad 1 is fixed to the holder 11 via the outermost vertical fastening structure 8A that does not overlap the absorbent body 5 in a plan view, and the absorbent pad 1 is more effectively prevented from peeling off from the holder 11.
  • the present invention includes a configuration in which three or more pad side fastening structures 8 are intermittently arranged in the vertical direction X in one end region of the absorbent pad 1 in the vertical direction X (see FIG. 7), and in such a configuration, it is preferable that only the outermost vertical fastening structure 8A does not overlap the absorbent body 5, and the other multiple inner fastening structures 8B each overlap the absorbent body 5.
  • the pad-side fastening structure 8 includes a plurality of fastening elements 8A, 8B arranged at intervals in the vertical direction X.
  • an elastic member is not arranged in a stretchable state in the region between the plurality of fastening elements adjacent to each other in the vertical direction X.
  • an elastic member is not arranged in a stretchable state in the region between the fastening element 8A and the fastening element 8B.
  • the region between the fastening element 8A and the fastening element 8B is not given elasticity by the elastic member arranged in the region.
  • the term "elasticity” here refers to the property of being stretchable and returning to a length of 110% or less of the original length when the force is released from a state in which the fastening element is stretched 50% of its original length (a state in which the fastening element is stretched 150% of its original length, i.e., 1.5 times its original length). It is preferable that the region between the fastening elements 8A, 8B adjacent to each other in the vertical direction X does not have such a property. As a result, for example, when the diaper 10 shown in FIG. 5 is being worn, the multiple intermittently arranged fastening elements 8A, 8B each easily follow the wearer's body movements, more effectively preventing the absorbent pad 1 from peeling off from the holder 11.
  • the stretchable leg cuffs 65 extend along the longitudinal direction X at a position outward in the transverse direction Y from the side edges along the longitudinal direction X of the absorbent body 5, and it is preferable that the stretch start position of the leg cuffs 65 on at least one of the ventral side (ventral portion F) and the dorsal side (dorsal portion R) coincides with the inner edge in the longitudinal direction X of the pad-side fastening structure 8 or is positioned outward in the longitudinal direction X beyond the inner edge.
  • the "stretch start position of the leg cuff 65" refers to one end in the vertical direction X of the stretchable region (the region where the standing portion 62 is arranged) in which the leg cuff forming elastic member 66 constituting the leg cuff 65 is arranged so as to be stretchable in the vertical direction X.
  • the stretchable region typically extends in the same direction over at least the entire length of the vertical direction X of the crotch portion M, and further extends to each of the abdominal portion F and the dorsal portion R.
  • the “inner edge in the vertical direction X of the pad side fastening structure 8" refers to the inner edge in the vertical direction X of the one (the fastening element 8B in this embodiment) located at the innermost position in the vertical direction X among the multiple pad side fastening structures 8 intermittently arranged in the vertical direction X in the end region of the absorbent pad 1 in the vertical direction X.
  • the “inner edge” here refers to the one located on the inner side in the vertical direction X (the side closer to the absorbent body 5) among a pair of vertical direction X edges of the pad side fastening structure 8 extending in the horizontal direction Y.
  • the pair of edges in the longitudinal direction X of the pad-side fastening structure 8 includes the inner edge and an outer edge located opposite to the inner edge.
  • the present embodiment includes the stretchable first leakage preventing cuffs 6 (lateral leakage preventing cuffs) extending along the vertical direction X at a position inward of the leg cuffs 65 in the horizontal direction Y, and it is preferable that the stretch start position of the first leakage preventing cuffs 6 on at least one of the ventral side (ventral portion F) or dorsal side (dorsal portion R) coincides with the inner edge of the pad-side fastening structure 8 in the vertical direction X, or is located beyond the inner edge and outward in the vertical direction X.
  • the desired effects of the present invention are more reliably achieved.
  • the "stretch start position of the first leakage preventing cuff 6" refers to one end in the vertical direction X of a stretchable region (region where the standing portion 62 is disposed) in which the first elastic member 61 constituting the first leakage preventing cuff 6 is arranged so as to be stretchable in the vertical direction X.
  • the stretchable region typically extends in the same direction in the vertical direction X over at least the entire length of the crotch portion M, and further extends into each of the abdominal portion F and the dorsal portion R.
  • FIG. 6 to 11 show the main part (the pad-side fastening structure and its vicinity) of another embodiment of the absorbent pad of the present invention.
  • the absorbent pads in Fig. 6 to Fig. 8 are those in which the method A is adopted, and the absorbent pads in Fig. 9 to Fig. 11 are those in which the method B is adopted.
  • the absorbent pads will be mainly described in terms of their configurations that differ from the absorbent pad 1, and the same configurations as the absorbent pad 1 will be denoted by the same reference numerals and will not be described.
  • the description of the absorbent pad 1 will be applied as appropriate.
  • the ventral portion F will be described, but the description of the ventral portion F will also be applied as appropriate to the dorsal portion R, unless otherwise specified.
  • the pad-side fastening structure 8 includes multiple (two) fastening elements 8A and 8B, as in the absorbent pad 1.
  • the fastening element 8A located on the outer side of the vertical direction X has a shorter length (width) in the vertical direction X than the fastening element 8B located on the inner side of the vertical direction X, and the relationship "width W1 of fastening element 8A ⁇ width W2 of fastening element 8B" is established.
  • the fastening elements 8A and 8B both have the same length in the horizontal direction Y and the same fastening structure configuration (the configuration of the male members of the mechanical hook-and-loop fastener, the number of engaging members arranged per unit area of the male members, etc.), and therefore have the same fastening force per unit area. Therefore, the magnitude relationship regarding the width is established, and in the pad-side fastening structure 8, the part located on the outer side of the vertical direction X (fastening element 8A) has a weaker fastening force to the holder than the part located on the inner side of the vertical direction X (fastening element 8B).
  • the absorbent pad 1B shown in FIG. 7 differs from the absorbent pad 1A in that the pad-side fastening structure 8 includes four fastening elements 8A, 8B, in that the pad-side fastening structure 8 includes four fastening elements 8A, 8B.
  • the four fastening elements 8A, 8B are composed of three narrow fastening elements 8A located on the outer side in the vertical direction X and having a relatively short length (width) in the vertical direction X, and one wide fastening element 8B located at the innermost side in the vertical direction X and having a relatively long width.
  • the widths of the three fastening elements 8A are the same.
  • width W1 of fastening element 8A ⁇ width W2 of fastening element 8B is established. Therefore, in the pad-side fastening structure 8 of the absorbent pad 1B, the part located on the outer side in the vertical direction X (fastening element 8A) has a weaker fastening force to the holder than the part located on the inner side in the vertical direction X (fastening element 8B).
  • the absorbent pad 1C shown in FIG. 8 differs from absorbent pad 1A in that fastening elements 8A, 8B each include a plurality of fastening elements 80 arranged intermittently in the horizontal direction Y.
  • the ratio of the width W1 of the portion located on the outer side in the vertical direction X to the width W2 of the portion located on the inner side in the vertical direction X, assuming that the width W1 is less than the width W2, is preferably 0.15 or more, more preferably 0.2 or more, and is preferably 0.9 or less, more preferably 0.8 or less, in terms of width W1/width W2.
  • the width W1 (see FIGS.
  • the width W2 (see FIGS. 6 to 8) is presumed to be shorter than the width W2, and is preferably 2 mm or more, more preferably 5 mm or more, and is preferably 30 mm or less, more preferably 25 mm or less.
  • the width W2 (see FIGS. 6 to 8) is, on the premise that it is longer than the width W1, preferably 5 mm or more, more preferably 10 mm or more, and preferably 50 mm or less, more preferably 40 mm or less.
  • the present invention includes a configuration in which the widths W1, W2 are not constant over the entire lateral length of the fastening element (pad side fastening structure), and in such a configuration, it is preferable that the minimum widths W1, W2 are each within the above-mentioned ranges.
  • the absorbent pad 1D shown in Fig. 9 is different from the absorbent pad 1A in that the multiple (two) fastening elements 8A, 8B constituting the pad-side fastening structure 8 have the same shape and size, and the fastening elements 8A, 8B have different widths (lengths in the vertical direction X).
  • the portion (fastening element 8B) located on the inner side of the pad-side fastening structure 8 in the vertical direction X is not subjected to compression processing, or the ratio of the area of the compressed portion (compressed portion) 81 to the total area of the portion (hereinafter also referred to as “compressed portion area ratio”) is lower than the portion (fastening element 8A) located on the outer side of the pad-side fastening structure 8 in the vertical direction X.
  • the fastening element 8A has the compressed portion 81 formed therein, whereas the fastening element 8B has no compressed portion 81 formed therein, and the compressed portion area ratio of the fastening element 8B is zero.
  • two compressed portions 81 having a wavy shape in a plan view and arranged at intervals in the vertical direction X extend over the entire length in the horizontal direction Y of the fastening element 8A.
  • the compressed portion 81 does not have a fastening force to the holder because the fastening structure such as the male member of the mechanical hook-and-loop fastener is destroyed by the compression process. Therefore, the fastening element 8A having a relatively high compressed portion area ratio has a weaker fastening force to the holder than the fastening element 8B having a relatively low compressed portion area ratio.
  • the area ratio of the compressed portion in the fastening element 8A (the portion located on the outer side in the vertical direction X in the pad-side fastening structure 8) is preferably 5% or more, more preferably 10% or more, and preferably 50% or less, more preferably 30% or less, from the viewpoint of ensuring the minimum required fastening force while more reliably achieving the effect resulting from the partial fastening force difference of the pad-side fastening structure 8 described above.
  • the compression process for forming the compressed portion 81 may be any process capable of destroying a fastening structure such as the male member, and examples thereof include known embossing processes such as embossing with or without the application of heat, ultrasonic embossing, etc.
  • the absorbent pad 1E shown in Fig. 10 differs from the absorbent pad 1D in that the difference between the multiple fastening elements 8A, 8B constituting the pad side fastening structure 8 is the number of engaging members 83 constituting the male member of the mechanical hook-and-loop fastener arranged per unit area.
  • the pad side fastening structure 8 of the absorbent pad 1E does not have a compressed portion 81.
  • the fastening elements 8A, 8B, which are male members of the mechanical hook-and-loop fastener, include a base material 82 and multiple engaging members 83 arranged on one surface of the base material 82, as shown in an enlarged view in Fig. 10.
  • the pattern of the engaging members 83 is different between the portion (fastening element 8A) located on the outer side of the vertical direction X in the pad side fastening structure 8 and the portion (fastening element 8B) located on the inner side of the vertical direction X in the pad side fastening structure 8.
  • the fastening element 8A has a smaller number of engaging members 83 arranged per unit area than the fastening element 8B. Therefore, in the pad-side fastening structure 8 of the absorbent pad 1E, the fastening element 8A has a weaker fastening force to the holder than the fastening element 8B.
  • the “pattern of the engaging members 83" is determined by the “shape of the engaging members 83” and the “number of engaging members 83 arranged per unit area,” so as a method of partially varying the pattern of the engaging members 83 in the pad-side fastening structure 8, instead of the latter, the former method, i.e., a method of varying the shape of the engaging members 83, may be adopted, or a method of making both different may be adopted.
  • the absorbent pad 1F shown in FIG. 11 differs from absorbent pad 1E, whose pad-side fastening structure 8 is made up of a plurality of fastening elements 8A, 8B arranged at intervals in the vertical direction X, in that the pad-side fastening structure 8 has a single continuous shape. That is, in absorbent pad 1F, fastening elements 8A arranged in a relatively small number per unit area of engaging members 83 and fastening elements 8B arranged in a relatively large number are integrated to form a single pad-side fastening structure 8 in the end region of absorbent pad 1F in the vertical direction X.
  • the widths (lengths in the vertical direction X) of the multiple fastening elements 8A, 8B constituting the pad-side fastening structure 8 are the same, but the widths of the multiple fastening elements constituting the pad-side fastening structure 8 may differ from each other, provided that the fastening force against the holder satisfies the relationship "portion located on the outer side in the vertical direction X (fastening element 8A) ⁇ portion located on the inner side in the vertical direction X (fastening element 8B)."
  • the absorbent pad of the present invention may be provided with a disposal tape and an indicator for notifying the wearer of excretion.
  • the disposal tape is for maintaining the state of the absorbent pad rolled up when the used absorbent pad is rolled up small and discarded.
  • the disposal tape is typically provided on the non-skin-facing surface (outer surface) of the absorbent pad, and when used, is arranged so as to straddle one end of the absorbent pad rolled up vertically with the skin-facing surface (inner surface) facing inward, in the same direction, thereby maintaining the rolled state of the absorbent pad.
  • the indicator is used for the purpose of notifying the time to replace the absorbent pad, and is typically made to change color visually by contact with urine, and the color change of the indicator is made visible from the outside of the absorbent pad.
  • the disposal tape and the indicator those conventionally used in this type of absorbent article can be used without any particular restrictions.
  • the pad-side fastening structure 8 was provided on the skin-facing surface (inner surface) of the absorbent pad 1, but in the present invention, it may be provided on the non-skin-facing surface (outer surface) of the absorbent pad 1, in which case, for example, the pad-side fastening structure 8 can be fixed to the non-skin-facing surface of the back sheet 4.
  • the pad-side fastening structure 8 is a male member of the mechanical hook-and-loop fastener
  • the holder-side fastening structure 14 is a female member of the mechanical hook-and-loop fastener
  • the pad-side fastening structure 8 may be a female member of the mechanical hook-and-loop fastener
  • the holder-side fastening structure 14 may be a male member of the mechanical hook-and-loop fastener.
  • the garment comprises a top sheet located close to the wearer's skin when worn, a back sheet located far from the wearer's skin, and an absorbent body located between the top sheet and the back sheet,
  • a vertical direction corresponds to a front-to-rear direction passing through the crotch of a wearer, and a horizontal direction perpendicular to the vertical direction
  • An absorbent pad that can be used by being detachably fixed to a holder that is attached in a circular shape around the waist of a wearer
  • a pad-side fastening structure that can be attached to and detached from the holder is provided at the end region in the vertical direction
  • the pad side fastening structure of this absorbent pad has a fastening force to the holder that varies partially in the vertical direction, with the fastening force being weaker in the portion located on the outer side in the vertical direction than in the portion located on the inner side in the vertical direction.
  • ⁇ 2> The absorbent pad according to ⁇ 1>, wherein the pad-side fastening structure is continuous in the lateral direction.
  • ⁇ 3> The absorbent pad described in ⁇ 1> or ⁇ 2>, wherein, in a plan view of the absorbent pad, a portion located on the outer side of the vertical direction in the pad side fastening structure does not overlap with the absorbent body, and a portion located on the inner side of the vertical direction in the pad side fastening structure overlaps with the absorbent body.
  • ⁇ 4> The absorbent pad described in any one of ⁇ 1> to ⁇ 3>, wherein the pad side fastening structure is divided into a plurality of fastening elements in the vertical direction, and the plurality of fastening elements are arranged intermittently in the vertical direction.
  • ⁇ 5> The absorbent pad according to ⁇ 4> above, wherein the distance (L2) between the multiple fastening elements is 1 mm or more and 50 mm or less, preferably 3 mm or more and 40 mm or less.
  • ⁇ 6> The absorbent pad described in ⁇ 4> or ⁇ 5>, wherein, in a planar view of the absorbent pad, among the plurality of fastening elements, the fastening element located at the outermost position in the vertical direction does not overlap with the absorbent body, and among the plurality of fastening elements, fastening elements other than the fastening element located at the outermost position in the vertical direction overlap with the absorbent body.
  • ⁇ 7> The absorbent pad according to any one of ⁇ 4> to ⁇ 6>, wherein no elastic member is arranged in a stretchable state in the region between the fastening elements adjacent in the vertical direction.
  • Elastic leg cuffs extend along the longitudinal direction outward from the absorbent body in the lateral direction;
  • a ratio (W1/W2) of a length (width) (W1) in the vertical direction of a fastening element located at the outermost position in the vertical direction among the plurality of fastening elements to a length (width) (W2) in the vertical direction of a fastening element located at the innermost position in the vertical direction among the plurality of fastening elements is 0.15 or more and 0.9 or less, preferably 0.2 or more and 0.8 or less.
  • the pad-side fastening structure is a male member of a mechanical hook-and-loop fastener, the male member including a base material and a plurality of engaging members disposed on one surface of the base material,
  • the absorbent pad described in any one of ⁇ 1> to ⁇ 10>, wherein a pattern of the engaging member is different between a portion located on the outer side of the vertical direction in the pad side fastening structure and a portion located on the inner side of the vertical direction in the pad side fastening structure.
  • ⁇ 12> The absorbent pad according to any one of ⁇ 1> to ⁇ 11>, wherein a portion located on the inner side in the vertical direction in the pad side fastening structure is not compressed, or the ratio of the area of the compressed portion to the total area of the portion is lower than that of a portion located on the outer side in the vertical direction in the pad side fastening structure.
  • An absorbent article comprising the absorbent pad according to any one of ⁇ 1> to ⁇ 12> above, and a holder to which the absorbent pad can be attached.
  • the absorbent pad of the present invention has excellent adhesion to the holder, is less likely to come off unintentionally while being worn, and can be easily removed from the holder by the wearer themselves.

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  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
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  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

L'invention concerne un tampon absorbant (1) qui est fixé amovible à un support (11) qui est porté autour de la taille d'un utilisateur sous la forme d'un anneau. Le tampon absorbant (1) présente, dans une section d'extrémité dans la direction longitudinale (X), des structures de fixation côté tampon (8) qui peuvent être fixées au support (11) et détachées de celui-ci. La force d'attachement des structures de fixation côté tampon (8) au support (11) est partiellement différente dans la direction longitudinale (X), la partie (8A) située sur le côté externe dans la direction longitudinale (X) ayant une force d'attachement plus faible que la partie (8B) située sur le côté interne dans la direction longitudinale (X).
PCT/JP2023/041910 2022-11-25 2023-11-22 Tampon absorbant et article absorbant Ceased WO2024111607A1 (fr)

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JP2022-188503 2022-11-25
JP2022188503A JP2024076771A (ja) 2022-11-25 2022-11-25 吸収性パッド

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WO2024111607A1 true WO2024111607A1 (fr) 2024-05-30

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US20140257230A1 (en) * 2013-03-08 2014-09-11 The Procter & Gamble Company Fastening zone configurations for outer covers of absorbent articles
JP2016514981A (ja) * 2013-03-08 2016-05-26 ザ プロクター アンド ギャンブル カンパニー パンツのための外側カバー、及び使い捨て吸収性インサート

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