WO2023277013A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2023277013A1
WO2023277013A1 PCT/JP2022/025755 JP2022025755W WO2023277013A1 WO 2023277013 A1 WO2023277013 A1 WO 2023277013A1 JP 2022025755 W JP2022025755 W JP 2022025755W WO 2023277013 A1 WO2023277013 A1 WO 2023277013A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
wing
absorbent
width direction
core
Prior art date
Application number
PCT/JP2022/025755
Other languages
English (en)
Japanese (ja)
Inventor
淳 工藤
夕里子 森実
英之 木下
規世子 西村
遥 市原
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
Publication of WO2023277013A1 publication Critical patent/WO2023277013A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • 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
    • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer

Definitions

  • the present invention relates to absorbent articles having wings.
  • Patent Document 1 discloses an absorbent article in which absorbent sheets are arranged on wings.
  • the absorbent article of Patent Document 1 has an absorbent sheet arranged across a pair of wings, and a body absorbent body arranged between the wings and between the wings.
  • Patent Document 2 discloses a first absorbent body arranged over the entire longitudinal direction of the napkin and a second absorbent body protruding outward in the width direction from the first absorbent body in the crotch region arranged in the crotch region of the wearer. have a body and According to the absorbent articles of Patent Documents 1 and 2, the absorbent sheet or the second absorbent body can retain body fluids that have diffused laterally from the center in the width direction of the absorbent article.
  • the present invention has been made in view of such problems, and provides an absorbent article that allows the user to feel secure against leakage while suppressing discomfort at the base of the leg.
  • An absorbent article includes an absorbent core, a top sheet disposed on the skin side of the absorbent core and in contact with the wearer, and a top sheet disposed on the non-skin side of the absorbent core, and is attached to the wearing article. It has a back sheet that abuts against the back sheet, an intermediate sheet that is arranged between the top sheet and the back sheet, and wings that are folded back toward the non-skin surface side of the wearing article at the time of wearing from the wing crease.
  • the outer edge of the absorbent core is located inside the wing crease in the width direction.
  • the intermediate sheet has a Klemm water absorbency of less than 10 mm, and is arranged to overlap the absorbent core and straddle the wing crease.
  • An absorbent article includes an absorbent body having an absorbent core, a top sheet disposed closer to the skin than the absorbent core and in contact with the wearer, and a top sheet facing the non-skin side of the worn article when worn. and a wing that is folded back about the wing fold line.
  • the top sheet includes a center sheet that covers the center of the absorbent core in the width direction, and hydrophobic side sheets that cover the outer sides of the center sheet and are arranged at least on the wings.
  • the absorbent body and the side sheets are arranged across the wing folds, and the absorbent body is covered with the side sheets at the wing folds.
  • FIG. 1 is a plan view of an absorbent article according to an embodiment viewed from the skin side.
  • FIG. 2 is a plan view of the absorbent article according to the embodiment viewed from the non-skin surface side.
  • 3 is a cross-sectional view taken along line AA shown in FIG. 1.
  • An absorbent article includes an absorbent core, a top sheet disposed on the skin side of the absorbent core and in contact with the wearer, and a top sheet disposed on the non-skin side of the absorbent core, and is attached to the wearing article. It has a back sheet that abuts against the back sheet, an intermediate sheet that is arranged between the top sheet and the back sheet, and wings that are folded back toward the non-skin surface side of the wearing article at the time of wearing from the wing crease.
  • the outer edge of the absorbent core is located inside the wing crease in the width direction.
  • the intermediate sheet has a Klemm water absorbency of less than 10 mm, and is arranged to overlap the absorbent core and straddle the wing crease.
  • the absorbent core is positioned on the inner side of the wing crease in the width direction, the absorbent core is not arranged in the wing crease, thereby suppressing the problem that the body fluid of the absorbent core adheres to the leg at the wing crease. can.
  • the intermediate sheet arranged in the wing crease does not retain body fluids easily, so that it is possible to suppress the problem that the body fluid in the wing crease sticks to the leg, and the feeling of discomfort at the base of the leg can be suppressed.
  • the intermediate sheet is positioned across the wing folds from the area overlapping the absorbent core.
  • a user recognizes the intermediate sheet as a sheet extending from the absorbent core that absorbs bodily fluids, and by visually recognizing the intermediate sheet, the user can feel that the range of absorption of bodily fluids is wide. Therefore, the user can obtain a sense of security regarding the absorption performance and a sense of security against leakage.
  • the intermediate sheet is a core wrap sheet covering the absorbent core, and the intermediate sheet and the absorbent core constitute an absorbent body.
  • the core wrap sheet constituting the absorbent body extends beyond the wing crease, the user can recognize that the absorbent body that absorbs bodily fluids is wide, and obtains a greater sense of security in terms of absorption performance. easy.
  • An absorbent article includes an absorbent body having an absorbent core, a top sheet disposed closer to the skin than the absorbent core and in contact with the wearer, and a top sheet facing the non-skin side of the worn article when worn. and a wing that is folded back about the wing fold line.
  • the top sheet includes a center sheet that covers the center of the absorbent core in the width direction, and hydrophobic side sheets that cover the outer sides of the center sheet and are arranged at least on the wings.
  • the absorbent body and the side sheets are arranged across the wing folds, and the absorbent body is covered with the side sheets at the wing folds.
  • the absorbent body extends beyond the wing creases, the user can easily recognize that the absorbent body that absorbs bodily fluids is wide, and can easily obtain a sense of security in terms of absorption performance.
  • the absorbent body is covered with the hydrophobic side sheets at the wing folds, even if the absorbent body retains body fluids at the wing folds, the body fluids do not pass through the side sheets. Defects attached to the leg can be suppressed, and uncomfortable feeling at the base of the leg can be suppressed.
  • the absorbent body has the absorbent core and a core wrap sheet covering the absorbent core.
  • the core wrap sheet is an intermediate sheet disposed between the top sheet and the back sheet.
  • the outer edge of the absorbent core is located inside the wing crease in the width direction.
  • the intermediate sheet has a Klemm water absorbency of less than 10 mm, and is arranged to overlap the absorbent core and straddle the wing crease. According to this aspect, it is possible to suppress the problem of body fluids adhering to the legs through the absorbent core at the wing creases.
  • the intermediate sheet has a Klemm water absorbency of less than 10 mm and does not easily retain body fluids. Therefore, it is difficult for the intermediate sheet arranged in the wing crease to retain bodily fluids, and the problem of body fluids in the wing creases sticking to the leg can be suppressed, and discomfort at the base of the leg can be suppressed.
  • the intermediate sheet is arranged closer to the skin than the absorbent core. According to this aspect, when the user views the absorbent article from the skin side, the user can easily grasp the entire intermediate sheet.
  • the intermediate sheet covers the absorbent core, extends to the wing folds, and is arranged over a wider area than the absorbent core.
  • the absorbent article has, when viewed from the skin surface side of the absorbent article, a core arrangement region in which the absorbent core is arranged and the intermediate sheet in which the absorbent core is not arranged. and a sheet arrangement area in which is arranged.
  • a color difference between the core arrangement area and the sheet arrangement area is 20.0 or less.
  • the user since the color difference between the core arrangement area and the sheet arrangement area is 20.0 or less, the user does not recognize the core arrangement area and the sheet arrangement area as separate areas.
  • the sheet arrangement area is integrated and easily recognized. Therefore, it can be felt to have a wider range of absorption of body fluids. Therefore, it is possible to obtain a sense of security against absorption performance and leakage.
  • the absorbent article has a non-arrangement area located outside the sheet arrangement area and in which the intermediate sheet is not arranged when viewed from the skin surface side of the absorbent article. have.
  • the color difference between the sheet arrangement area and the sheet non-arrangement area is greater than 20.0.
  • the user can easily distinguish and recognize the sheet arrangement area and the non-arrangement area. By distinguishing and recognizing the areas where the absorbent performance is demonstrated (the seat arrangement area and the core arrangement area) from other areas, the entire area where the absorbent performance is exhibited can be felt relatively wide, and the absorbent performance is safe. is easier to obtain.
  • a wing adhesive portion for attaching the wing to the worn article is provided outside the wing crease in the width direction.
  • the absorbent article has a sheet arrangement area in which the absorbent core is not arranged and the intermediate sheet is arranged when viewed from the skin surface side of the absorbent article.
  • the wing adhesive portion is arranged in the sheet arrangement area.
  • the sheet arrangement area where the intermediate sheet is arranged can be attached to the non-skin surface side of the wearing article via the wing adhesive portion. It is possible to suppress the positional deviation of the intermediate sheet when it is mounted, and to wind the intermediate sheet without wrinkles.
  • the wings are provided with reinforcing sheets arranged between the top sheet and the back sheet.
  • the inner edge of the reinforcing sheet is located outside the outer edge of the absorbent core and inside the outer edge of the intermediate sheet.
  • the widthwise inner edge of the reinforcing sheet is arranged outside the absorbent core in the widthwise direction, and the wings can be folded with the widthwise inner edge of the reinforcing sheet as a base point.
  • the reinforcing sheet increases the rigidity of the wing and suppresses wrinkling of the wing.
  • the intermediate sheet is a core wrap sheet that covers the skin side and the non-skin side of the absorbent core.
  • the area of the core wrap sheet on the skin side is larger than the area of the core wrap sheet on the non-skin side.
  • the outer edge in the width direction of the intermediate sheet has a sheet convex portion that bulges outward in the width direction.
  • a seat vertex which is an outer edge in the width direction of the seat convex portion, is deviated from the center of the wing in the front-rear direction.
  • the apex of the seat is shifted from the center of the wing in the longitudinal direction, the apex of the seat is more conspicuous compared to the form in which the apex of the seat is arranged on the center of the wing in the longitudinal direction, and the absorption performance is improved for the user. It will be easier to give a wide range of impressions.
  • the seat convex portion is asymmetrical with respect to a wing center line passing through the center of the wing in the front-rear direction and along the width direction.
  • the seat apex is more conspicuous compared to the form symmetrical with respect to the wing center line, and the absorption performance is exhibited for the user. It makes it easier to give a wide range of impressions.
  • the seat protrusions include a first seat protrusion on the front side of the center of the wing in the front-rear direction, and a second seat protrusion on the rear side of the center of the wing in the front-rear direction. have.
  • the sheet vertex of the first sheet protrusion and the sheet vertex of the second sheet protrusion differ in position in the width direction.
  • the lateral sides of the wings in the width direction have wing protrusions that bulge outward in the width direction.
  • the wing protrusion has a first wing protrusion forward of the longitudinal center of the wing and a second wing protrusion rearward of the longitudinal center of the wing.
  • the vertex of the first wing protrusion and the vertex of the second wing protrusion differ in position in the width direction.
  • the apex of the wing protrusion is offset from the center of the wing in the front-rear direction, the apex is more conspicuous compared to a form in which the apex is arranged on the center of the wing, and the absorption performance is demonstrated to the user. It makes it easier to give a wide range of impressions.
  • the absorbent article 1 may be an absorbent article such as a sanitary napkin, pantiliner, incontinence pad, fecal pad.
  • the absorbent article may be an article that is used by being attached to the inside of a wearing article such as underwear.
  • the absorbent article 1 of the embodiment is a daytime sanitary napkin.
  • the same or similar reference numerals are given to the same or similar parts.
  • the drawings are schematic and the ratio of each dimension may differ from the actual one. Therefore, specific dimensions and the like should be determined with reference to the following description.
  • FIG. 1 is a plan view of the absorbent article 1 viewed from the skin surface side T1.
  • FIG. 2 is a plan view of the absorbent article 1 viewed from the non-skin side T2.
  • 3 is a cross-sectional view taken along line AA shown in FIG. 1.
  • the "skin side” corresponds to the side facing the wearer's skin during use.
  • “Non-skin side” corresponds to the side facing away from the wearer's skin during use.
  • the absorbent article 1 has a front-rear direction L, a width direction W, and a thickness direction T which are orthogonal to each other.
  • the absorbent article 1 has a crotch region S2, a front side region S1 and a back side region S3.
  • the crotch region S2 is a region arranged to face the wearer's excretory opening, for example, the vaginal opening.
  • the crotch region S2 is arranged at the crotch of the wearing article and is arranged between the legs of the wearer.
  • the front side region S1 is positioned forward of the crotch region S2.
  • a front edge of the front side region S1 defines a front edge of the absorbent article 1 .
  • the rear side region S3 is located behind the crotch region S2.
  • a rear edge of the rear side region S3 defines a rear edge of the absorbent article 1 .
  • the absorbent article 1 has at least an absorbent core 31, a top sheet 10 and a back sheet 20, and has a vertically long shape.
  • the top sheet 10 is a sheet that is arranged closer to the skin surface side T1 than the absorbent core 31 and contacts the wearer.
  • the top sheet 10 has a center sheet 11 that covers the center of the absorbent core 31 in the width direction W, and hydrophobic side sheets 12 that cover the outer sides of the center sheet 11 and are arranged at least on the wings 7 described later. you can
  • the center sheet 11 is made of any sheet-like material having a liquid-permeable structure, such as nonwoven fabric, woven fabric, perforated plastic sheet, mesh sheet, or the like.
  • the side sheets 12 may be hydrophobic and may be made of the same material as the center sheet 11 .
  • the back sheet 20 is a sheet arranged on the non-skin side T2 of the absorbent core 31 and in contact with the worn article.
  • the backsheet 20 is a liquid-impermeable sheet.
  • the back sheet 20 may be a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene or the like, an air permeable resin film, a sheet in which an air permeable resin film is bonded to a nonwoven fabric such as spunbond or spunlace.
  • the absorbent core 31 constitutes the absorbent body 30 .
  • the absorbent core 31 may be composed of an absorbent material that absorbs liquid.
  • the absorbent material that makes up the absorbent core 31 can be formed from, for example, hydrophilic fibers, pulp and superabsorbent polymers (SAP).
  • SAP superabsorbent polymers
  • the absorbent body 30 may have a core wrap sheet 32 covering the absorbent core 31 .
  • the core wrap sheet 32 can be made of, for example, nonwoven fabric or tissue.
  • the absorbent core 31 may not be covered with the core wrap sheet 32 .
  • the core wrap sheet 32 may constitute the "intermediate sheet" of the present invention.
  • the intermediate sheet will be explained later.
  • the intermediate sheet may not be composed of the core wrap sheet, and may be composed of a sheet disposed between the core wrap sheet and the top sheet 10 .
  • the absorbent article 1 has wings 7.
  • the wings 7 are folded back toward the non-skin side T2 of the worn article with the wing fold line FL as a base point when worn.
  • At least a top sheet 10 and a back sheet 20 may be arranged on the wings 7 .
  • the wing crease FL is defined by the base of the wing 7, and is a line that connects the front portion and the rear portion of the two portions recessed inward in the width direction W.
  • the wings 7 are folded toward the top sheet 10 before use with the wing crease FL as a base point, and may be folded back toward the non-skin surface side T2 of the worn article during use.
  • the outer edge 31E of the absorbent core 31 may be located inside in the width direction W of the wing fold line FL.
  • the absorbent core 31 may be arranged without straddling the wing fold line FL.
  • a reinforcing sheet 15 arranged between the top sheet 10 and the back sheet 20 may be arranged in the wing 7 .
  • the reinforcing sheet 15 may extend continuously from the front edge to the rear edge of the wing 7 .
  • the outer edge 15E of the reinforcing sheet 15 is located inside the outer edge 7E of the wing 7 in the width direction W, and the inner edge 15I of the reinforcing sheet 15 is positioned further in the width direction than the wing crease FL, which is the inner edge of the wing 7. It may be located outside W.
  • the wing 7 may be provided with a region where the reinforcing sheet 15 is arranged and a region where the reinforcing sheet 15 is not arranged.
  • the area where the reinforcing sheet 15 is arranged is sandwiched between the areas where the reinforcing sheet 15 is not arranged in the width direction W.
  • the reinforcing sheet 15 may be placed at the wing fold FL, which is the inner edge of the wing 7 .
  • the rigidity of the wing crease FL is increased by the reinforcing sheet 15, and the wing 7 can be folded stably and easily.
  • 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 the outer edge in the width direction W.
  • the inner portion in the present invention 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 the inner edge in the width direction W.
  • the front end portion and the rear end portion in the present invention are portions occupying a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L.
  • the outer edge includes a leading edge and a trailing edge, and the outer edge includes a leading edge and a trailing edge.
  • the inner side is a side that includes the inner edge and extends along the front-rear direction L.
  • the outer side is a side that includes the outer edge and extends along the front-rear direction L.
  • the term “along the front-rear direction L” means a direction having an angle of less than 45° with respect to the front-rear direction L
  • the term “along the width direction W” It means a direction with an angle of less than 45° with respect to the width direction W.
  • the absorbent article 1 has an adhesive portion for attaching the absorbent article 1 to a worn article such as underwear.
  • the adhesive portion is provided on the non-skin surface side of the back sheet 20 and is a region provided with fastening means for fastening the absorbent article 1 to a worn article such as underwear.
  • the adhesive part has a body adhesive part 61 for attaching at least a region overlapping with the absorbent core 31 to the wearing article.
  • the body adhesive portion 61 is provided in a region overlapping the absorbent core 31 in the thickness direction T of the absorbent article 1 .
  • the main body adhesive portion 61 of the present embodiment extends in the front-rear direction L and is provided in plurality in the width direction W at intervals.
  • the body adhesive portion 61 may extend in the width direction W and may be provided in plurality in the front-rear direction L at intervals.
  • the adhesive part may have a wing adhesive part 62 for attaching the wings 7 to the worn article.
  • the wing adhesive part 62 is attached to the non-skin surface of the wing 7, and adheres to the non-skin surface of the worn article while the wing 7 is folded back to the non-skin side T2 of the worn article when worn. Therefore, the wing adhesive portion 62 is arranged outside the wing crease FL in the width direction W in the state in which the wings 7 are unfolded (the state shown in FIGS. 1 and 2).
  • the adhesive part may be covered with a packaging sheet or release sheet (not shown) before use.
  • the absorbent article 1 of the present embodiment is configured so that the user can obtain a sense of security against leakage while suppressing discomfort at the base of the leg.
  • a configuration that gives the user a sense of security against leakage while suppressing discomfort at the base of the leg A first aspect and a second aspect can be exemplified as an absorbent article having a configuration that allows the user to feel secure against leakage while suppressing discomfort at the base of the leg. Both the absorbent article according to the first aspect and the absorbent article according to the second aspect will be described based on the absorbent article 1 shown in Figs. 1 to 3 .
  • the absorbent article 1 has an absorbent core 31, a top sheet 10, a back sheet 20, an intermediate sheet 5, and wings 7, and the outer edge 31E of the absorbent core 31 is It is characterized by being positioned inside in the width direction W of the wing fold line FL.
  • the intermediate sheet 5 is a sheet having a Klemm water absorbency of less than 10 mm, overlapping the absorbent core 31 and straddling the wing fold line FL.
  • the absorbent body 30 and the side sheet 12 may not be arranged across the wing fold line FL, and the absorbent body 30 may be positioned at the wing fold line FL.
  • the skin surface side T1 may not be covered with the side sheet 12.
  • the intermediate sheet 5 has a Klemm water absorbency of less than 10 mm and does not easily retain bodily fluids. Therefore, it is difficult for the intermediate sheet 5 arranged at the wing fold FL to retain the body fluid, and it is possible to suppress the problem that the body fluid at the wing fold FL sticks to the leg, thereby suppressing the feeling of discomfort at the base of the leg.
  • the intermediate sheet 5 is arranged beyond the wing fold line FL from the region overlapping the absorbent core 31 . The user recognizes the intermediate sheet 5 as a sheet extending from the absorbent core 31 that absorbs bodily fluids, and by visually recognizing the intermediate sheet 5, the user can pseudo-feel that the range of absorption of bodily fluids is wide. can.
  • the user can obtain a sense of security regarding the absorption performance and a sense of security against leakage.
  • the absorbent core 31 is positioned inside the wing fold FL in the width direction W, the absorbent core 31 is not arranged at the wing fold FL, and the body fluid of the absorbent core 31 adheres to the leg at the wing fold FL. It is possible to suppress the trouble that occurs.
  • the absorbent core 31 is not arranged outside the wing fold line FL in the width direction W, not only the wing fold line FL connecting the roots of the wings 7 can be folded as a base point, but also the width direction outside the wing root can be used.
  • the absorbent core does not interfere with the folding of the wings 7 starting from the position of (1), and the wings 7 can be folded at a desired position such as matching the width of the crotch region of the worn article.
  • the folding base point for folding the wings 7 may be appropriately changed depending on the user's wearing style, and more specifically, it is provided in the region between the outer edge 31E of the absorbent core 31 and the inner edge 15I of the reinforcing sheet 15. There are many things. For example, when the width of the crotch region of the worn article is narrower than the width of the absorbent core 31, the outer edge 31E of the absorbent core 31 is folded as a base point, and the width of the crotch region of the worn article is narrower than the width of the absorbent core 31. If the absorbent core 31 is wide, it may be folded with the wing fold line FL located outside the outer edge 31E of the absorbent core 31 as a base point.
  • the wings 7 may be folded with the outer edge 11E of the center seat 11 as a base point.
  • the outer edge 5E of the intermediate sheet 5 is positioned outside the outer edge 11E of the center sheet 11 in the width direction W, so the intermediate sheet 5 is also folded.
  • the folded intermediate sheets 5 do not overlap each other in the thickness direction T.
  • the folded intermediate sheet 5 does not overlap the center of the absorbent article in the width direction W. Therefore, the distance between the outer edges 11E of the center sheet 11 may be longer than twice the distance between the outer edge 11E of the center sheet 11 and the outer edge 5E of the intermediate sheet 5.
  • the interval between the wing folds FL may be longer than twice the distance between the wing fold FL and the outer edge 5E of the intermediate sheet 5. At least part of the intermediate sheet 5 is folded back to the non-skin surface side T2 of the worn article when worn. At this time, the folded intermediate sheet 5 may overlap the absorbent core 31 . Therefore, the distance between the wing fold FL and the outer edge 5E of the intermediate sheet 5 may be longer than the distance between the wing fold FL and the outer edge 31E of the absorbent core 31 . Further, the folded intermediate sheet 5 does not need to overlap the main body adhesive portion 61 .
  • the distance between the wing fold FL and the outer edge 5E of the intermediate sheet 5 may be shorter than the distance between the wing fold FL and the outer edge of the main body adhesive portion 61 .
  • the intermediate sheet 5 does not have to be arranged in the entire width direction W of the wing 7, and the distance between the wing fold FL and the outer edge 5E of the intermediate sheet 5 is shorter than the distance between the wing fold FL and the wing outer edge. 1/2 or less of the distance between the wing fold FL and the wing outer edge.
  • the Klemm water absorption can be measured according to the Klemm water absorption test (JIS-L1907, P8141).
  • a ruler, a stopwatch, a plastic container, and artificial urine (colored with Blue No. 1) are used as measuring instruments.
  • artificial urine is put into a plastic container until the depth of the artificial urine reaches 10 mm or more.
  • the sampled test piece is fixed with a fixing chuck and set so as to be immersed in artificial urine at a depth of 5 mm from the tip of the sample. This is left as it is for 5 minutes (environment: temperature 20° C./humidity 60%).
  • the artificial urine rises along the sample, and the wicking distance on the sample is measured from the surface of the artificial urine.
  • the suction distance is defined as the Kremm water absorbency.
  • the Klemm water absorbency of the intermediate sheet 5 may be less than 10 mm, more preferably less than 5 mm.
  • the intermediate sheet 5 may be a core wrap sheet 32 covering the absorbent core 31 .
  • the intermediate sheet 5 and the absorbent core 31 may constitute the absorbent body 30 .
  • the core wrap sheets 32 are arranged on the skin side T1 and the non-skin side T2 of the absorbent core 31, at least the core wrap sheet 32 on the skin side T1 constitutes the intermediate sheet 5.
  • the absorbent body 30 is arranged beyond the wing fold line FL, the user can visually recognize the absorbent body 30 and feel that the body fluid absorption range is wide. Therefore, the user can obtain a sense of security regarding the absorption performance and a greater sense of security against leakage.
  • the absorbent body 30 is covered by the hydrophobic sidesheets 12 at the wing folds FL.
  • the skin surface side T1 of the core wrap sheet 32 constituting the absorbent body 30 is covered with the side sheet 12 at the wing fold line FL. Therefore, even if the absorber 30 retains body fluids at the wing creases FL, the body fluids do not pass through the side sheets 12, so that it is possible to prevent the body fluids at the wing creases FL from sticking to the legs, thereby suppressing discomfort at the base of the legs. can.
  • the absorbent article 1 according to the second aspect has an absorbent body 30 having an absorbent core 31, a center sheet 11, side sheets 12, and wings 7, and the outer edge 31E of the absorbent core 31 is
  • the absorbent body 30 and the side sheet 12 are located inside the wing fold line FL in the width direction W, the absorbent body 30 and the side sheet 12 are arranged across the wing fold line FL, and the absorbent body 30 is covered with the side sheet 12 at the wing fold line FL.
  • the absorbent article 1 according to the second aspect may not have the intermediate sheet 5 unlike the absorbent article of the first aspect. Since the absorbent body 30 is arranged beyond the wing fold line FL, the user can feel that the body fluid absorption range is wide by visually recognizing the absorbent body.
  • the absorbent body 30 is covered with the hydrophobic side sheet 12 at the wing fold FL. Even if the absorber 30 retains body fluids at the wing folds FL, the body fluids do not pass through the side sheets 12, so that the problem of body fluids at the wing folds FL sticking to the legs can be suppressed, and discomfort at the base of the legs can be suppressed.
  • the side seats 12 straddle the wing fold FL, and the center seat 11 may or may not straddle the wing fold FL.
  • the outer edge 11E of the center seat 11 may be positioned inside in the width direction W of the wing fold line FL.
  • Body fluids are prevented from reaching the wing creases FL via the center seat 11, and the problem of the body fluids at the wing creases FL sticking to the legs can be further suppressed.
  • the outer edge 12E of the side sheet 12 reaches the outer edge of the wing 7, the inner edge 12I of the side sheet 12 is located inside the wing fold line FL in the width direction W, and is closer than the outer edge 31E of the absorbent core 31. It may be located inside the width direction W.
  • the absorbent body 30 may straddle the wing fold FL, the absorbent core 31 may not straddle the wing fold FL, and the core wrap sheet 32 may straddle the wing fold FL.
  • the outer edge 31E of the absorbent core 31 may be positioned inside in the width direction W of the wing fold line FL.
  • the core wrap sheet 32 may be the intermediate sheet 5 having a Klemm water absorbency of less than 10 mm.
  • the intermediate sheet 5 has a Klemm water absorbency of less than 10 mm and does not easily retain bodily fluids. Therefore, it is difficult for the intermediate sheet 5 arranged at the wing fold FL to retain the body fluid, and it is possible to suppress the problem that the body fluid at the wing fold FL sticks to the leg, thereby suppressing the feeling of discomfort at the base of the leg.
  • the intermediate sheet 5 may be arranged on the non-skin side T ⁇ b>2 of the absorbent core 31 or may be arranged on the skin side T ⁇ b>1 of the absorbent core 31 .
  • the intermediate sheet 5 may be arranged closer to the skin side T1 than the absorbent core 31 is. Since the intermediate sheet 5 is positioned closer to the skin surface than the absorbent core, the user can easily grasp the entire intermediate sheet 5 when viewing the absorbent article from the skin surface side.
  • the intermediate sheet 5 covers the absorbent core 31 , extends to the wing fold line FL, and is arranged in a wider range than the absorbent core 31 . By visually recognizing the intermediate sheet 5 arranged in a wide range, the user can feel that the range for absorbing bodily fluids is wide. Therefore, it is possible to obtain a sense of security against absorption performance and leakage.
  • the intermediate sheet 5 may overlap in a region of 1/2 or more of the length of the wing fold FL in the front-rear direction, preferably in a region of 2/3 or more of the length of the wing fold FL in the front-rear direction. May overlap.
  • the maximum width of the intermediate sheet 5 may be 1.2 times or more and 1.5 times or less of the maximum width of the absorbent core 31 . While making the intermediate sheet 5 look wide, the intermediate sheet 5 and the absorbent core are easily visually integrated with each other without making the difference in width too large. Further, the Klemm water absorbency of the intermediate sheet 5 may be greater than 0 mm.
  • the intermediate sheet 5 absorbs water even if the water absorbency is lower than that of an absorbent material such as pulp, the user not only feels secure against pseudo-leakage but also retains body fluid supplementally by arranging the intermediate sheet 5. You can also get a real sense of security that they will do it.
  • the Klemm water absorbency of the intermediate sheet may be lower than the Klemm water absorbency of the topsheet and may be higher than that of the sidesheets.
  • the sheet used for the intermediate sheet 5 preferably has a low cellulose content, and more preferably a sheet using synthetic fiber instead of cotton, rayon, tissue, or the like.
  • the intermediate sheet 5 may be a sheet without water-retentive fibers such as cellulose.
  • the intermediate sheet 5 may be a core wrap sheet 32 covering the skin side T1 and the non-skin side T2 of the absorbent core 31 .
  • the area of the core wrap sheet 32 on the skin side T1 may be larger than the area of the core wrap sheet 32 on the non-skin side T2.
  • the inner edge 15I of the reinforcing sheet 15 may be located outside the outer edge 31E of the absorbent core 31 and inside the outer edge 5E of the intermediate sheet 5.
  • the inner edge in the width direction W of the reinforcing sheet 15 is arranged outside the absorbent core 31 in the width direction W, and the wings 7 are folded with the inner edge in the width direction W of the reinforcing sheet 15 as a base point. be able to.
  • the reinforcement sheet 15 increases the rigidity of the wings 7 and suppresses the occurrence of wrinkles in the wings 7 .
  • the outer edge 15E of the reinforcing sheet 15 may be located outside the outer edge 5E of the intermediate sheet 5 in the width direction W. By overlapping the outer edge 5E of the intermediate sheet 5 with the reinforcing sheet 15, the intermediate sheet 5 can be stably folded more easily.
  • the absorbent article 1 When viewed from the skin surface side T1 of the absorbent article 1, the absorbent article 1 has a core arrangement region R31 in which the absorbent core 31 is arranged and an intermediate sheet 5 in which the absorbent core 31 is not arranged. It has a sheet arrangement area R32 and a non-arrangement area R33 located outside the sheet arrangement area R32 and in which the intermediate sheet 5 is not arranged.
  • the core arrangement region R31 is arranged in the center of the absorbent article 1 in the width direction.
  • the sheet arrangement area R32 is an area where the core wrap sheet 32 on the skin surface side T1 is arranged, and is located outside the core arrangement area R31 in the width direction.
  • the non-placement region R33 is a region located outside the core wrap sheet 32 on the skin surface side T1, and is a region between the outer edge of the core wrap sheet 32 and the outer edge of the absorbent article 1. be.
  • the area where the intermediate sheet 5 is arranged may have visibility different from that of the surrounding area (for example, the non-arranged area).
  • the intermediate sheet 5 may be colored, may have uneven portions formed by a shaping process, or may have pressed portions formed by embossing.
  • the core wrap sheet 32 may be white and the core wrap sheet 32 may be highlighted by coloring the back sheet 20 .
  • the color difference between the core placement region R31 and the sheet placement region R32 may be 20.0 or less.
  • the color difference between the core arrangement region R31 and the sheet placement region R32 may be 20.0 or less, and more preferably, the color difference ⁇ E may be 12.0 or less.
  • the user can easily recognize the core arrangement area R31 and the sheet arrangement area R32 as an integrated unit without recognizing the core arrangement area R31 and the sheet arrangement area R32 as separate areas. Therefore, the user can feel that there is a wider area for absorbing bodily fluids. Therefore, it is possible to obtain a sense of security against absorption performance and leakage.
  • a color difference ⁇ E between the sheet arrangement area R32 and the non-arrangement area R33 may be greater than 20.0. According to this aspect, the user can easily distinguish and recognize the sheet arrangement area R32 and the non-arrangement area R33. By distinguishing and recognizing the regions where the absorbent performance is exhibited (the seat arrangement region R32 and the core arrangement region R31) from the other regions (the non-arrangement region R33), the entire region where the absorbent performance is exhibited can be felt relatively wide. , and it is easier to obtain a sense of security in terms of absorption performance.
  • the wing adhesive portion 62 is arranged in the sheet arrangement area R32.
  • the sheet arrangement region R32 where the intermediate sheet 5 is arranged can be attached to the non-skin surface side T2 of the wearing article via the wing adhesive portion 62. As shown in FIG.
  • the intermediate sheet 5 can be prevented from being misaligned when worn, and the intermediate sheet 5 can be wrapped around the wearable article without wrinkles.
  • At least part of the wing adhesive portion 62 may be arranged in the sheet arrangement region R32. It may straddle the region R33.
  • the inner edge 62I of the wing adhesive portion 62 of the present embodiment is positioned outside the inner edge 15I of the reinforcing sheet 15 in the width direction W and inside the outer edge 5E of the intermediate sheet 5 in the width direction W,
  • the outer edge 62E of the wing adhesive portion 62 is located inside the outer edge 15E of the reinforcing sheet 15 in the width direction W and outside the outer edge 5E of the intermediate sheet 5 in the width direction.
  • the outer side of the intermediate sheet 5 may have a sheet convex portion 50 that bulges outward in the width direction W.
  • the sheet convex portion 50 is a portion that swells in a curved or linear shape, and in this embodiment, it swells in a curved shape.
  • At least one seat protrusion 50 may be provided, and a plurality of seat protrusions 50 may be provided at intervals in the front-rear direction L as in the present embodiment.
  • the sheet convex portion 50 has a sheet vertex 50P and a sheet base point.
  • the sheet vertex 50 ⁇ /b>P is a portion of each sheet convex portion that bulges outward most in the width direction, and is an outer edge of the sheet convex portion 50 .
  • the seat base point is a portion of each sheet convex portion positioned innermost in the width direction, and is a root portion of the sheet convex portion 50 .
  • the seat apex 50P is more conspicuous compared to the configuration in which the seat apex 50P is arranged on the center of the wing 7 in the front-rear direction L, and the user is assured that the absorption performance is exhibited in a wide range. It becomes easier to give.
  • a plurality of seat protrusions 50 it is sufficient that one seat vertex 50P is deviated from the center of the wing 7 in the front-rear direction L. As shown in FIG.
  • the seat convex portion 50 may be asymmetric with respect to the wing center line 7CL passing through the center of the wing in the longitudinal direction and along the width direction W. Since the seat protrusions are asymmetrical with respect to the wing center line, the seat protrusions are more conspicuous compared to the symmetrical form with respect to the wing center line, and the user has a wide range of absorption performance. It becomes easier to give It should be noted that the configuration in which the seat protrusions 50 are asymmetrical with respect to the wing centerline 7CL may be such that one seat protrusion 50 is asymmetrical with respect to the wing centerline 7CL, and the seat protrusions 50 may be asymmetrical with respect to the wing centerline 7CL. Sheet convex portions may be arranged on the rear side, respectively, and the numbers and shapes thereof may be different.
  • the seat convex portion 50 may have a first seat convex portion 51 on the front side of the center of the wing in the longitudinal direction, and a second seat convex portion 52 on the rear side of the center of the wing in the longitudinal direction.
  • the positions in the width direction W of the sheet vertex 51P of the first sheet convex portion 51 and the sheet vertex 52P of the second sheet convex portion 52 may be different. Since a plurality of sheet protrusions are provided and their positions in the width direction are different, the user can easily recognize the existence of the sheet protrusions and easily get a feeling that the intermediate sheet spreads in the width direction. Therefore, it becomes easier to give the impression that the range in which the absorption performance is exhibited is wide.
  • the seat vertex 51P of the first seat protrusion 51 and the seat vertex 52P of the second seat protrusion 52 may have different distances from the wing center line 7CL. Since a plurality of seat protrusions are provided and the positions in the width direction with respect to the wing center line 7CL are different, the user can easily recognize the presence of each seat protrusion and easily get a feeling that the intermediate sheet spreads in the width direction.
  • the outer side of the wing (the side extending in the front-rear direction L) may have a wing protrusion 70 that bulges outward in the width direction W.
  • the wing convex portion 70 is a portion that bulges in a curved or linear shape, and in this embodiment, it bulges in a curved shape.
  • At least one wing protrusion 70 may be provided, and a plurality of wing protrusions 70 may be provided at intervals in the front-rear direction L as in the present embodiment.
  • the wing convex portion 70 has a wing vertex 70P and a wing base point.
  • the wing apex 70 ⁇ /b>P is a portion of each wing protrusion 70 that protrudes outward most in the width direction, and is an outer edge of each wing protrusion 70 .
  • the wing base point is the innermost portion of each wing protrusion 70 in the width direction, and is the root portion of each wing protrusion 70 .
  • the wing convex portion 70 may be asymmetric with respect to the wing centerline 7CL. Since the wing protrusions 70 are asymmetrical with respect to the wing centerline 7CL, the wing protrusions 70 are more conspicuous compared to the symmetrical form with respect to the wing centerline 7CL, and the absorbent article as a whole is perceived by the user. Makes it easier to give a wider impression. In addition, the configuration in which the wing protrusions 70 are asymmetrical with respect to the wing centerline 7CL may be such that one wing protrusion 70 is asymmetrical with respect to the wing centerline 7CL. Wing protrusions 70 may be arranged on the rear side, respectively, and the numbers and shapes thereof may be different.
  • the wing protrusion 70 may have a first wing protrusion 71 forward of the center of the wing in the longitudinal direction and a second wing protrusion 72 rearward of the center of the wing in the longitudinal direction.
  • the positions in the width direction W of the first wing vertex 71P of the first wing protrusion 71 and the second wing vertex 72P of the second wing protrusion 72 may be different.
  • a plurality of wing projections 70 are provided, and the positions of the wing apexes in the width direction W are different, so that the user can easily recognize the presence of each wing projection 70 and have a feeling that the wings 7 spread in the width direction W. Easy to get.
  • the first wing vertex 71P and the second wing vertex 72P may have different distances from the wing centerline 7CL. Since a plurality of wing protrusions 70 are provided and the positions in the front-rear direction L with respect to the wing centerline 7CL are different, the user can easily recognize the presence of each wing protrusion 70 .
  • the first wing vertex 71P is positioned outside the second wing vertex 72P in the width direction W.
  • the swelling shape of the sheet protrusions and the swelling shape of the wing protrusions 70 cooperate to give the impression that the absorbent article spreads in the width direction. easy to recognize.

Landscapes

  • 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)

Abstract

L'invention concerne un article absorbant avec lequel un utilisateur peut ressentir un sentiment de sécurité contre les fuites tout en supprimant un sentiment d'inconfort au niveau des cuisses des jambes. Cet article absorbant (1) comprend : un noyau absorbant (31) ; une feuille supérieure (10) qui est disposée davantage vers le côté peau que le noyau absorbant et qui est en contact avec un porteur ; une feuille arrière (20) qui est disposée plus loin vers le côté non cutané que le noyau absorbant et qui est en contact avec un article porté ; une feuille intermédiaire (5) disposée entre la feuille supérieure et la feuille arrière ; et une aile (7) qui est repliée au niveau d'une ligne de pliage d'aile (FL) en tant que point de base, vers le côté non cutané de l'article porté qui est porté. Le bord externe (31E) du noyau absorbant est situé à l'intérieur de la ligne de pliage d'aile dans le sens de la largeur. La feuille intermédiaire présente une absorption d'eau Klemm inférieure à 10 mm, chevauche le noyau absorbant, et est disposée de façon à chevaucher la ligne de pliage d'aile.
PCT/JP2022/025755 2021-06-30 2022-06-28 Article absorbant WO2023277013A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021109573 2021-06-30
JP2021-109573 2021-06-30

Publications (1)

Publication Number Publication Date
WO2023277013A1 true WO2023277013A1 (fr) 2023-01-05

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Country Link
WO (1) WO2023277013A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003088550A (ja) * 2001-07-12 2003-03-25 Uni Charm Corp 生理用ナプキン
JP2013075081A (ja) * 2011-09-30 2013-04-25 Unicharm Corp 吸収性物品
JP2013154018A (ja) * 2012-01-31 2013-08-15 Daio Paper Corp 吸収性物品
JP2016013199A (ja) * 2014-06-30 2016-01-28 ユニ・チャーム株式会社 吸収性物品
JP2017086388A (ja) * 2015-11-09 2017-05-25 ユニ・チャーム株式会社 吸収性物品
US20180325754A1 (en) * 2017-05-12 2018-11-15 The Procter & Gamble Company Feminine Hygiene Article
JP2020130735A (ja) * 2019-02-21 2020-08-31 ユニ・チャーム株式会社 吸収性物品の包装体

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003088550A (ja) * 2001-07-12 2003-03-25 Uni Charm Corp 生理用ナプキン
JP2013075081A (ja) * 2011-09-30 2013-04-25 Unicharm Corp 吸収性物品
JP2013154018A (ja) * 2012-01-31 2013-08-15 Daio Paper Corp 吸収性物品
JP2016013199A (ja) * 2014-06-30 2016-01-28 ユニ・チャーム株式会社 吸収性物品
JP2017086388A (ja) * 2015-11-09 2017-05-25 ユニ・チャーム株式会社 吸収性物品
US20180325754A1 (en) * 2017-05-12 2018-11-15 The Procter & Gamble Company Feminine Hygiene Article
JP2020130735A (ja) * 2019-02-21 2020-08-31 ユニ・チャーム株式会社 吸収性物品の包装体

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