WO2021039513A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2021039513A1
WO2021039513A1 PCT/JP2020/031190 JP2020031190W WO2021039513A1 WO 2021039513 A1 WO2021039513 A1 WO 2021039513A1 JP 2020031190 W JP2020031190 W JP 2020031190W WO 2021039513 A1 WO2021039513 A1 WO 2021039513A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
absorbent article
article according
recessed portion
skin
Prior art date
Application number
PCT/JP2020/031190
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
順 梶原
宏子 川口
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN202080054971.8A priority Critical patent/CN114206285B/zh
Publication of WO2021039513A1 publication Critical patent/WO2021039513A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
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    • A61F13/00—Bandages or dressings; Absorbent pads
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    • A—HUMAN NECESSITIES
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    • A61F13/00—Bandages or dressings; Absorbent pads
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    • 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
    • A61F13/474—Sanitary towels, incontinence pads or napkins adjustable
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    • 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
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
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    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/493—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies adjustable by adding or removing material, e.g. umbilical cord arrangements
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    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • A61F13/49406—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
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    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
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    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
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    • 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
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    • A61F13/00—Bandages or dressings; Absorbent pads
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    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
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    • A—HUMAN NECESSITIES
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    • A—HUMAN NECESSITIES
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    • A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control
    • A61F2013/8414—Additives, e.g. for odour, disinfectant or pH control with odour control with anti-microbic

Definitions

  • the present invention relates to an absorbent article containing an antibacterial agent.
  • Absorbent articles such as disposable diapers typically include an absorber that absorbs and retains excrement such as urine, a surface sheet that is closer to the wearer's skin than the absorber, and the absorber.
  • the back sheet is provided on the side farther from the wearer's skin, and the absorbent body includes an absorbent core mainly composed of an absorbent material such as a fiber material or a water-absorbent polymer, and an outer surface of the absorbent core. Consists of a core wrap sheet that covers.
  • Patent Document 1 has a functional material region in which a functional material containing an antibacterial agent is arranged between an absorber and a surface sheet, and the functional material region and a layer adjacent thereto in the thickness direction.
  • An absorbent article having a squeezed portion compressed in the thickness direction is described. In the squeezed portion, the front surface sheet, the core wrap sheet and the absorbent core constituting the absorber are integrally recessed on the back surface sheet side, and the members located in the squeezed portion are in close contact with each other without a gap. doing.
  • the present invention relates to an absorbent article having a laminated structure that absorbs and retains body fluid excreted by the wearer.
  • the laminated structure includes a first layer arranged at a position relatively close to the wearer's skin, a third layer arranged at a position relatively far from the wearer's skin, the first layer, and the first layer. It has a second layer arranged between the three layers.
  • the first layer and the third layer each have a recess on the skin-facing surface. Between the second layer and the third layer, there is a space corresponding to the recessed portion of the third layer.
  • the second layer or the third layer contains an antibacterial agent.
  • the recessed portion of the first layer and the recessed portion of the third layer are present at positions overlapping with the antibacterial agent arrangement region in which the antibacterial agent is arranged in a plan view.
  • FIG. 1 is a developed plan view schematically showing a skin-facing surface side (inner surface side) in an unfolded and stretched state of a deployable disposable diaper according to an embodiment of the absorbent article of the present invention.
  • FIG. 2 is a cross-sectional view schematically showing a cross section taken along line II of FIG.
  • FIG. 3 is a cross-sectional view schematically showing an enlarged part of the laminated structure shown in FIG.
  • FIG. 4 is a view corresponding to FIG. 3 of another embodiment of the laminated structure according to the present invention.
  • FIG. 5 is a view corresponding to FIG. 3 of still another embodiment of the laminated structure according to the present invention.
  • FIG. 6 is a view corresponding to FIG. 3 of still another embodiment of the laminated structure according to the present invention.
  • FIG. 7 is a view corresponding to FIG. 3 of still another embodiment of the laminated structure according to the present invention.
  • the antibacterial agent When an antibacterial agent is added to an absorbent article, the antibacterial agent is usually added to a member (for example, a surface sheet) arranged closer to the wearer's skin than the absorber. By doing so, when excrement such as urine passes through the member containing the antibacterial agent in the thickness direction, the antibacterial agent is eluted together with the excrement, and the eluate is absorbed and held by the absorber. , The prescribed antibacterial effect is exhibited.
  • a member for example, a surface sheet
  • the present invention relates to an absorbent article having excellent antibacterial properties.
  • the diaper 1 has a vertical direction X corresponding to the front-back direction of the wearer, that is, a direction extending from the ventral side to the dorsal side via the crotch portion, and a horizontal direction Y orthogonal to the vertical direction X, and has a vertical center (vertical center). It is divided into a front body F arranged on the ventral side of the wearer and a back body R arranged on the back side of the wearer with the line CLx) as a boundary.
  • the diaper 1 has a front body F arranged on the front side (ventral side) of the wearer and a back side (rear side) of the wearer with the center in the vertical direction (vertical center line CLx) as a boundary. It is divided into the best time to see R, which is arranged in.
  • the vertical center line CLx is a virtual straight line that bisects the expanded and extended diaper 1 as shown in FIG. 2 in the vertical direction X and extends in the horizontal direction Y.
  • the "expanded and stretched state" of the diaper 1 means that the diaper 1 is in the unfolded state as shown in FIG. 2, and the elastic members of each part of the unfolded diaper 1 are stretched to eliminate the influence of the elastic members. It refers to the state in which it is expanded to the same size as when it is expanded in a flat state.
  • the diaper 1 has a ventral portion A arranged on the ventral side of the wearer, an inseam B arranged on the inseam, and a dorsal portion C arranged on the dorsal side.
  • the ventral part A is a part of the front body F
  • the back side C is a part of the rear view R
  • the inseam B straddles the vertical center line CLx in the vertical direction X and extends over the front body F and the back view R.
  • the inseam B includes an excretion portion facing portion (not shown) that is arranged to face the excretion portion such as the wearer's penis when worn.
  • the diaper 1 is a so-called deployable disposable diaper, and as shown in FIG.
  • a fastening member 14 having a fastening portion 13 is provided on both side edges of the back side portion C of the diaper 1 along the longitudinal direction X.
  • a fastening region 15 to which the fastening portion 13 can be fastened is provided on the non-skin facing surface of the ventral side A.
  • the diaper 1 includes an absorbent main body 2 provided with an absorbent body 5 that absorbs and holds body fluid such as urine excreted by the wearer of the diaper 1, and a flap portion 6 extending outward from the peripheral edge of the absorbent main body 2. Equipped with.
  • the absorbent body 2 of the present embodiment includes a liquid-permeable surface sheet 3 that forms a skin-facing surface, a liquid-impermeable, liquid-impermeable, or water-repellent back sheet 4 that forms a non-skin-facing surface, and both. It is provided with a liquid-retaining absorber 5 interposed between the sheets 3 and 4, and these are integrated by a known joining means such as an adhesive.
  • the absorbent body 2 has a rectangular shape in a plan view as shown in FIG. 2, extends from the ventral side A to the dorsal side C in the vertical direction X, and its longitudinal direction coincides with the vertical direction X.
  • the absorber 5 has an hourglass shape in which the central portion of the vertical direction X located at the lower crotch B is constricted inward, and has a vertically long shape long in the vertical direction X.
  • the "skin facing surface” is a surface of the absorbent article or a component thereof (for example, an absorber) that is directed toward the wearer's skin when the absorbent article is worn, that is, the wearer's skin relatively.
  • the “non-skin facing surface” is the surface of the absorbent article or its constituents that faces the opposite side of the skin when the absorbent article is worn, that is, relatively far from the wearer's skin. On the side.
  • the term "when worn” as used herein means a state in which the normal proper wearing position, that is, the correct wearing position of the absorbent article is maintained.
  • the front surface sheet 3, the back surface sheet 4, and the absorber 5, those conventionally used for this type of absorbent article can be used without particular limitation.
  • the surface sheet 3 for example, various non-woven fabrics and perforated films can be used.
  • the back sheet 4 for example, a resin film or a laminate of a resin film and a non-woven fabric can be used.
  • the absorber 5 contains an absorbent material, as the absorbent material, those used as the material of the absorber in this kind of absorbent article can be used without particular limitation, for example, wood pulp and hydrophilic. Examples thereof include synthetic fibers that have been subjected to chemical treatment, water-absorbent polymers, and the like.
  • the absorbent body 5 may contain an absorbent material, and its form is not particularly limited.
  • the absorbent body 5 may be a laminated fiber made by stacking the absorbent material, or a sheet containing the absorbent material. It may be an absorption structure of.
  • the absorber 5 of the present embodiment is a core wrap sheet that covers the absorbent core 50 containing the absorbent material and the outer surface (skin facing surface, non-skin facing surface) of the absorbent core 50. It is configured to include 51 and.
  • the absorbent core 50 is typically a fiber stack made by stacking absorbent materials.
  • As the core wrap sheet 51 for example, a liquid permeable sheet such as paper, various non-woven fabrics, and perforated films can be used.
  • the absorbent core 50 and the core wrap sheet 51 may be joined by a known joining means such as a hot melt type adhesive.
  • the core wrap sheet 51 may be composed of one sheet or a plurality of sheets.
  • the core wrap sheet 51 composed of one sheet has, for example, a width of 2 times or more and 3 times or less the length of the lateral Y of the absorbent core 50 in the lateral direction, and covers the entire area of the absorbent core 50 facing the skin. And extends outward in the horizontal direction Y from both side edges along the vertical direction X of the absorbent core 50, and the extending portion is wound around the non-skin facing surface side of the absorbent core 50. It can cover the entire non-skin facing surface of the absorbent core 50.
  • the portion of the absorbent core 50 covering the skin facing surface covers the skin side core wrap sheet 52 and the non-skin facing surface of the absorbent core 50.
  • the portion is the non-skin side core wrap sheet 53.
  • the core wrap sheet 51 composed of a plurality of sheets is, for example, a single skin-side core wrap sheet 52 that covers the skin-facing surface of the absorbent core 50, and the sheet 52 is separate and absorbs. It includes one non-skin side core wrap sheet 53 that covers the non-skin facing surface of the sex core 50.
  • the flap portion 6 is composed of a member extending outward from the peripheral edge of the absorbent main body 2, and is a non-arranged portion of the absorber.
  • the front surface sheet 3 covers the entire surface of the absorber 5 facing the skin
  • the back surface sheet 4 covers the entire area of the non-skin facing surface of the absorber 5.
  • the sheets 3 and 4 further extend outward in the horizontal direction Y from both side edges along the vertical direction X of the absorbent main body 2, and together with the leak-proof cuff forming sheet 70 described later, a part of the flap portion 6 (absorbent main body).
  • Both side edges along the vertical direction X of 2 and side flap portions extending outward in the horizontal direction Y from the virtual extension lines of the both side edges) are formed.
  • the plurality of members constituting the flap portion 6 are joined to each other by known joining means such as an adhesive, a heat seal, and an ultrasonic seal.
  • leak-proof cuffs 7 standing up toward the wearer's skin side when worn are arranged along both side portions of the absorbent body 2 (the laminated structure) along the vertical direction X.
  • a pair of sheets 70 for forming a leak-proof cuff which are liquid-resistant or water-repellent and breathable, are included on both sides of the absorbent body 2 on the skin-facing surface along the vertical direction X.
  • Leakage-proof cuffs 7 and 7 are arranged.
  • each of the pair of leakage-proof cuff forming sheets 70, 70 one end side in the lateral direction Y is fixed to another member (front sheet 3 and back surface sheet 4 in the illustrated embodiment), and the fixed end portion and the lateral direction Y are respectively.
  • the other end side is a free end portion that is not fixed to another member, and a thread-like or band-shaped elastic member 71 for forming a leak-proof cuff is fixed to the free end portion in an extended state in the vertical direction X.
  • the free end side of the sheet 70 for forming the leak-proof cuff raises the fixing portion 72 with other members.
  • the standing of the leak-proof cuff 7 prevents the outflow of excrement such as urine to the outside in the lateral direction Y.
  • a plurality of thread-like or band-shaped elastic members 11 for forming gathers around the waist are extended in the lateral direction Y at the flap portions 6 at the ends of the ventral side A and the dorsal side C in the longitudinal direction X, that is, the waist ends.
  • the plurality of elastic members 11 are arranged intermittently at predetermined intervals in the vertical direction X.
  • the waist end portions of the ventral side portion A and the dorsal side portion C, which are the arrangement portions are substantially covered over the entire circumference thereof.
  • a continuous ring-shaped gather around the waist is formed.
  • the leg portion arranged around the wearer's leg when the diaper 1 is worn has an elastic member 12 for forming leg gathers extending in the vertical direction X at least in the vertical direction X of the inseam B. It extends in the vertical direction X over the entire length of the diaper, so that when the diaper 1 is worn, leg gathers are formed on the leg portion due to the contraction of the elastic member 12.
  • These gather-forming elastic members 11 and 12 are all of a plurality of sheets constituting the flap portion 6 (in this embodiment, two of the front surface sheet 3, the back surface sheet 4 and the leakage-proof cuff forming sheet 70). It is sandwiched and fixed between them by a joining means such as an adhesive.
  • the absorbent main body 2 has a laminated structure 20 that absorbs and holds body fluid excreted by the wearer, that is, excrement.
  • a part of the laminated structure 20 is enlarged and shown.
  • the laminated structure 20 includes a first layer 21 arranged at a position relatively close to the wearer's skin, a third layer 23 arranged at a position relatively far from the wearer's skin, and a first layer 21. It has a second layer 22 arranged between the third layer 23 and the third layer 23.
  • the absorbent main body 2 of the present embodiment includes a surface sheet 3, a skin-side core wrap sheet 52, and an absorbent core 50 in order from the wearer's skin, and the surface sheet 3 is provided.
  • the first layer 21, the skin-side core wrap sheet 52 is the second layer 22, and the absorbent core 50 is the third layer 23. No other layer is interposed between these three layers, and these three layers are adjacent to each other in the thickness direction and are in contact with each other.
  • the laminated structure 20 plays a role of absorbing and holding excrement, it is preferably arranged at least at the portion facing the excrement portion, and more specifically, at least at the center of the inseam B in the lateral direction Y. It is preferable to be arranged in a part.
  • the arranged portion of the absorbent main body 2 is substantially the arranged portion of the laminated structure 20, and the laminated structure 20 is lateral to the crotch portion B. It is arranged at the center of the direction Y over the entire length of the inseam B in the vertical direction X.
  • the first layer 21 has a recessed portion 21a on its skin-facing surface
  • the third layer 23 has a recessed portion 23a on its skin-facing surface.
  • the recessed portions 21a and 23a are recessed portions from the skin facing surface side to the non-skin facing surface side, and can be said to be recesses.
  • the recessed portion 23a of the third layer 23 is a through hole that penetrates the third layer 23 in the thickness direction, whereas the recessed portion 21a of the first layer 21 has a bottom portion instead of a through hole. .. That is, the material for forming the third layer 23 does not exist in the recessed portion 23a of the third layer 23, and the basis weight of the forming position of the recessed portion 23a is zero, whereas the recessed portion 21a of the first layer 21 has no basis weight. There is a forming material for the first layer 21, and the basis weight of the forming position of the recessed portion 21a is not zero.
  • the recessed portion according to the present invention includes a penetrating type recessed portion such as the recessed portion 23a and a non-penetrating type recessed portion having a bottom portion such as the recessed portion 21a.
  • the basis weight at the formation position of the non-penetrating recessed portion may be larger, less, or equivalent as compared with the basis weight of the peripheral portion. Even when the basis weight of the non-penetrating recessed portion is equal to or greater than the basis weight of the peripheral portion, for example, the recessed portion is a portion where the formation position is compressed in the thickness direction. The recessed portion is recessed more than the peripheral portion.
  • the method of forming the recess according to the present invention is not particularly limited.
  • a method for forming a non-penetrating type recessed portion such as the recessed portion 21a
  • a first layer 21 surface sheet 3 having no recessed portion and having a flat surface
  • a predetermined first layer 21 is formed.
  • Examples thereof include a method of applying a pressing process such as embossing to the site with or without heat.
  • the formation position of the recessed portion 21a formed by such a method is compressed in the thickness direction, and therefore has a higher density than the peripheral portion.
  • the recessed portion 21a is to be a through-type recessed portion, a die-cutting process, a cutting process, or the like may be adopted instead of the pressing process, and the material of the planned formation portion of the recessed portion 21a may be eliminated.
  • a die-cutting process, a cutting process, or the like may be adopted instead of the pressing process, and the material of the planned formation portion of the recessed portion 21a may be eliminated.
  • the forming method in the case of forming a penetrating type or non-penetrating type recess in the absorbent core 50, in the fiber stacking process of an absorbent material such as wood pulp at the time of manufacturing the absorbent core 50.
  • a method of intentionally inhibiting the stacking of the absorbent material in the portion where the depression is to be formed can be mentioned.
  • Such a method of forming the recessed portion can be carried out by a conventionally known method for manufacturing an absorbent core.
  • a core forming material supplied on an air stream is placed on a molding die formed on an outer peripheral surface of a rotating drum.
  • a molding die having a predetermined pattern for example, a molding die in which the portion corresponding to the recessed portion protrudes upward with respect to the peripheral portion is used as the molding die. It is possible to do so.
  • a plurality of recessed portions 21a are present on the skin-facing surface of the first layer 21, and a plurality of convex portions 21b that are raised toward the skin side of the wearer are present. That is, the first layer 21 of the present embodiment has a concavo-convex structure including a plurality of recessed portions 21a, that is, a recessed portion and a plurality of convex portions 21b on the skin-facing surface thereof.
  • the pattern of the concave-convex structure in the first layer 21, that is, the shape and arrangement of each of the recessed portion 21a and the convex portion 21b is not particularly limited, and various patterns can be adopted as long as the gist of the present invention is not deviated.
  • a pattern in which a plurality of recessed portions 21a are arranged in a scattered pattern on the skin facing surface and each recessed portion 21a is surrounded by a plurality of convex portions 21b can be mentioned.
  • a pattern in which recessed portions 21a extending in the vertical direction X and convex portions 21b extending in the vertical direction X are alternately arranged in the horizontal direction Y. Be done.
  • plan-view shapes of the recessed portion 21a and the convex portion 21b are not particularly limited, and for example, a circle, an ellipse, a triangle, a quadrangle, a polygon of a pentagon or more, a straight line, a curved line, or the like can be adopted.
  • the recessed portion 23a of the present embodiment has a rectangular shape in a plan view, and its longitudinal direction coincides with the vertical direction X.
  • a plurality of (three in the illustrated embodiment) recesses 23a extending in the vertical direction X are intermittently arranged in the horizontal direction Y in the crotch portion B.
  • the pattern of the recessed portion 23a in the third layer 23, that is, the shape and arrangement of the recessed portion 23a is not particularly limited, and various patterns can be adopted without departing from the spirit of the present invention.
  • a space corresponding to the recessed portion 23a of the third layer 23 exists between the second layer 22 and the third layer 23.
  • No other layer is interposed between the second layer 22 and the third layer 23, and the non-skin facing surface of the second layer 22 and the skin facing surface of the third layer 23 are in contact with each other and adjacent to each other. Therefore, the recessed portion 23a itself existing on the skin-facing surface of the third layer 23 becomes a space (gap) existing between the two layers 22 and 23. Therefore, normally, the number of spaces existing between the second layer 22 and the third layer 23 is the same as the number of the recessed portions 23a of the third layer 23. In the present embodiment, as shown in FIG. 2, since the number of the recessed portions 23a of the third layer 23 is three, there are three recessed portions between the second layer 22 and the third layer 23. There are three spaces corresponding to 23a on a one-to-one basis.
  • an antibacterial agent 24 is arranged in the laminated structure 20.
  • the second layer 22 or the third layer 23 contains the antibacterial agent 24, and the recessed portion 21a of the first layer 21 and the recessed portion 23a of the third layer 23 are viewed in a plan view.
  • the antibacterial agent 24 exists at a position overlapping with the antibacterial agent arrangement region.
  • the term "antibacterial agent-arranged region" as used herein means an region in which the antibacterial agent is arranged at a higher density than the peripheral portion, and typically, the antibacterial agent or a composition containing the antibacterial agent is applied or sprayed. It is a part given by being given, etc., and has a certain extent.
  • the second layer 22 contains the antibacterial agent 24, whereby the antibacterial property of the second layer 22 (skin side core wrap sheet 52) is improved.
  • the second layer 22 skin side core wrap sheet 52
  • FIG. 3 one of the three recesses 23a shown in FIG. 2 is enlarged together with the vicinity thereof, but the other two recesses 23a and the vicinity thereof are also shown in FIG. It is configured in the same way.
  • the body fluid in order to maximize the antibacterial effect of the antibacterial agent, the body fluid can be temporarily stocked at a predetermined portion of the laminated structure provided by the absorbent article, and the stocked body fluid and the laminated structure can be temporarily stocked.
  • the elution efficiency of the antibacterial agent was improved by allowing contact with the antibacterial agent placement region arranged at a predetermined location for a relatively long time.
  • the first layer 21 surface sheet 3
  • the third layer 23 (absorbent core 50) is formed.
  • a recessed portion 23a is provided on the surface facing the skin, and 2) a space corresponding to the recessed portion 23a of the third layer 23 exists between the second layer 22 (skin side core wrap sheet 52) and the third layer 23. 3)
  • the second layer 22 or the third layer 23 contains the antibacterial agent 24, and 4) the recessed portion 21a of the first layer 21 and the recessed portion 23a of the third layer 23 are arranged with the antibacterial agent 24 in a plan view. It exists at a position overlapping the antibacterial agent placement area.
  • the second layer 22 contains the antibacterial agent 24.
  • the above 1) is adopted, and since the first layer 21 and the third layer 23 have recessed portions 21a and 23a on the skin facing surface, both layers 21 and 23 do not have the recessed portion and their skin facing surfaces are flat. Since the liquid retention of both layers 21 and 23 is improved and the time during which body fluid can be temporarily stocked in both layers 21 and 23 becomes longer, it is possible to increase the elution time of the antibacterial agent 24. It becomes.
  • the recessed portion 21a in the first layer 21 is formed in the space (gap) formed by the recessed portion 23a existing between the second layer 22 and the third layer 23.
  • the diaper 1 has excellent antibacterial properties and excrement because the antibacterial agent 24 can be sufficiently eluted from the initial arrangement position (antibacterial agent arrangement region) by the cooperation of the above 1) to 4). Inconveniences caused by the growth of the derived bacteria, for example, skin troubles of the wearer and generation of an unpleasant odor when worn can be effectively suppressed.
  • a plurality of recessed portions 21a (recessed portions) and convex portions 21b are present on the skin-facing surface of the first layer 21, and the skin-facing surface has an uneven structure. Therefore, the liquid retention property is improved as compared with the case where the skin-facing surface of the first layer 21 does not have such an uneven structure, and the elution of the antibacterial agent 24 can be further promoted.
  • the ratio of the total area of the recessed portion 21a to the area of the skin facing surface of the first layer 21 is preferably 1% or more, more preferably 3% or more, and It is preferably 15% or less, more preferably 12% or less.
  • the area ratio of the recessed portion 21a on the skin-facing surface of the first layer 21 is within such a range, the liquid retention property of the first layer 21 is improved and the liquid easily passes through the first layer 21.
  • the recessed depth 23D (see FIG. 3) of the recessed portion 23a of the third layer 23 is deeper than the recessed depth 21D (see FIG. 3) of the recessed portion 21a of the first layer 21.
  • the antibacterial agent 24 is basically arranged on the side farther from the wearer's skin than the first layer 21, and therefore, in order to promote the elution of the antibacterial agent 24 with the passage of body fluid. It is preferable that the body fluid stays in the second layer 22 and / or the third layer 23 for as long as possible, but such a preferable state is stably created by establishing a magnitude relationship of 23D> 21D with respect to the depth of the depression. Can be.
  • the ratio of the recess depth 23D to the recess depth 21D is 23D / 21D, preferably 3 or more, more preferably 10 or more, and preferably 200 or less, more preferably 150 or less, assuming 23D> 21D. is there.
  • the recess depth 23D of the recessed portion 23a of the third layer 23 is preferably 0.05 mm or more, more preferably 1 mm or more, and preferably 10 mm or less, more preferably 8 mm or less.
  • the recessed depth 21D of the recessed portion 21a of the first layer 21 is preferably 0.05 mm or more, more preferably 0.075 mm or more, and preferably 1 mm or less, more preferably 0.8 mm or less.
  • the depression depth of the recessed portion of each layer (first layer 21, second layer 22, or third layer 23) constituting the laminated structure is measured by the following method.
  • the sheet to be measured (the layer to be measured in the laminated structure) is taken out from the absorbent article, and the taken-out sheet has a length of 50 mm in the vertical direction (longitudinal direction) and a length in the horizontal direction (width direction) of the absorbent article. It is cut into a quadrangular shape in a plan view of 50 mm to prepare a cut piece of the sheet. However, if it is not possible to make a piece of this size, make a piece as large as possible.
  • An enlarged photograph of the cut surface of the cut piece is obtained using a microscope (manufactured by KEYENCE CORPORATION, VHX-1000) under the conditions of a temperature of 20 ⁇ 2 ° C. and a relative humidity of 65 ⁇ 5%. From the enlarged photograph, the deepest part of the dented portion is defined as the dented depth of the dented portion, and the dented depths of the three dented portions are measured. The average value of the three points is taken as the depression depth of the recessed portion of the sheet to be measured.
  • the basis weight at the formation position of the recessed portion 23a is preferably lower than the basis weight at the peripheral portion.
  • the "peripheral portion of the recessed portion 23a" as used herein is a non-dented portion adjacent to the recessed portion 23a in the surface direction of the third layer 23, and is typically within 10 mm in the surface direction from the recessed portion 23a. Is the part of.
  • the recessed portion 23a of the present embodiment is a through-type recessed portion, and the basis weight of the forming position thereof is zero. Therefore, naturally, "the basis weight of the forming position of the recessed portion ⁇ the peripheral portion of the recessed portion". The magnitude relationship of "the basis weight of" is established.
  • the recessed portion 23a of the third layer 23 is a non-penetrating recessed portion such as the recessed portion 21a of the first layer 21, it is preferable that such a magnitude relationship is established.
  • the body fluid stocked in the recessed portion 23a is suppressed from diffusing in the plane direction (direction orthogonal to the thickness direction) of the third layer 23, and thus the second layer 22 and the second layer 22.
  • the liquid retention of the recessed portion 23a, which is the space between the third layer 23, can be further improved, and the elution of the antibacterial agent 24 can be further promoted.
  • the recessed portion 23a is a penetrating recessed portion as in the present embodiment because the diffusion of the body fluid stocked in the recessed portion 23a is easily suppressed.
  • the ratio of the basis weight of the formation position of the non-penetrating recess 23a to the basis weight of the peripheral portion is the former ⁇ the latter.
  • the former / the latter is preferably 0.08 or more, more preferably 0.1 or more, and preferably 0.8 or less, more preferably 0.6 or less.
  • the basis weight of the non-penetrating recess 23a is preferably 50 g / m 2 or more, more preferably 100 g / m 2 or more, and preferably 500 g / m 2 or less, more preferably 400 g / m 2 or less.
  • the composition of the third layer 23 is not particularly limited, but from the viewpoint of improving the liquid retention of the third layer 23, it is preferable to contain cellulose fibers and a water-absorbent polymer.
  • cellulose fibers and a water-absorbent polymer those that can be used as a material for forming an absorber in this type of absorbent article can be used without particular limitation.
  • the cellulose fiber include wood pulp such as coniferous pulp and broadleaf pulp, natural fiber such as non-wood pulp such as cotton pulp and hemp pulp; modified pulp such as cationized pulp and marcelled pulp; regeneration of cupra, rayon and the like. Examples thereof include fibers, and one of these can be used alone or in combination of two or more.
  • the water-absorbent polymer a particulate polymer is generally used, but a fibrous polymer may also be used. When a particulate water-absorbent polymer is used, its shape may be spherical, lumpy, bale-shaped or amorphous.
  • the average particle size of the water-absorbent polymer is preferably 10 ⁇ m or more, more preferably 100 ⁇ m or more, and preferably 1000 ⁇ m or less, more preferably 800 ⁇ m or less.
  • a polymer or copolymer of acrylic acid or an alkali metal salt of acrylic acid can generally be used. Examples thereof include polyacrylic acid and salts thereof, and polymethacrylic acid and salts thereof.
  • the content of the cellulose fibers in the third layer 23 is preferably 20% by mass or more, more preferably 30% by mass or more, and preferably 80% by mass or less, more preferably 80% by mass or less, based on the total mass of the third layer 23. It is 70% by mass or less.
  • the content of the water-absorbent polymer in the third layer 23 is preferably 20% by mass or more, more preferably 30% by mass or more, and preferably 80% by mass or less, more preferably, based on the total mass of the third layer 23. Is 70% by mass or less.
  • the third layer 23 has a lower liquid permeability than the second layer 22.
  • the second layer 22 has a lower liquid permeability than the first layer 21.
  • the liquid permeability of the second layer 22 is higher than that of the first layer 21.
  • Liquid Strike-Through Time is the time (seconds) required for a predetermined amount of physiological saline to pass from the front surface of the measurement material (for example, the first layer 21) to the back surface (from the skin facing surface to the non-skin facing surface). ) Is shown. It can be evaluated that the longer the Liquid Strike-Through Time, the lower the liquid permeability of the layer, and conversely, the shorter the Liquid Strike-Through Time, the higher the liquid permeability of the layer.
  • ⁇ Measurement method of Liquid Strike-Through Time> Ten sheets of special filter paper are placed on the pedestal of the measuring device (Lister), and the measuring material is placed on the filter paper. At this time, the non-skin facing surface of the measurement material (one of the plurality of layers constituting the laminated structure 20) is directed to the filter paper side, and the skin facing surface of the measurement material is the upper surface. Next, a strike-through plate having an electrode is placed on the upper surface of the measurement material, and a physiological saline solution (Otsuka Pharmaceutical Co., Ltd.'s Japanese Pharmacopoeia physiological saline solution Otsuka saline injection) is installed from the liquid inlet connected to the strike-through plate.
  • a physiological saline solution Otsuka Pharmaceutical Co., Ltd.'s Japanese Pharmacopoeia physiological saline solution Otsuka saline injection
  • Leakage cuff 7 is arranged. As described above, when the diaper 1 is worn, the leak-proof cuff 7 stands up so that the free end side of the leak-proof cuff forming sheet 70 is at least in the inseam B due to the contraction force of the leak-proof cuff forming elastic member 71. , The fixing portion 72 with other members stands up on the wearer side with the standing base end.
  • the laminated structure 20 is formed by the influence of the standing of the leak-proof cuff 7 in the standing state.
  • Wrinkles can be formed in at least one of a plurality of layers (first layer 21, second layer 22, third layer 23). The wrinkles are usually formed on the outer surface of the layer (skin facing surface, non-skin facing surface).
  • the wrinkles formed in the laminated structure 20 by the standing of the leak-proof cuff 7 can function as a portion where the body fluid can be temporarily stocked, so that the liquid retention of the entire laminated structure 20 is improved, and the antibacterial agent 24 It is possible to take a sufficient elution time.
  • the concave-convex structure including the recessed portion 21a on the skin-facing surface of the first layer 21 does not have to be inherently possessed by the first layer 21 (the surface sheet 3 in the present embodiment), for example, as described above.
  • the wrinkles may be formed on the skin-facing surface of the first layer 21 in the standing state of the leak-proof cuff 7. That is, when the leak-proof cuff 7 is not standing, that is, when the diaper 1 is not worn, the skin-facing surface of the first layer 21 is a flat surface without an uneven structure, but the leak-proof cuff 7 is standing, that is, the diaper 1.
  • the recessed portion 21a may be formed on the skin-facing surface.
  • At least one of the second layer 22 and the third layer 23 may contain the antibacterial agent 24, and the first layer 21 does not have to contain the antibacterial agent 24, but the first layer When 21 contains the antibacterial agent 24, the antibacterial property can be further improved.
  • both the first layer 21 and the third layer 23 contain the antibacterial agent 24.
  • the first layer 21 is the skin side core wrap sheet 52
  • the second layer 22 is the absorbent core 50
  • the third layer 23 is the non-skin side core wrap sheet 53.
  • each of the layers 21 and 23 may be inherently present, that is, always present, or the diaper 1 may be worn, for example, a wrinkle formed in an upright state of the leak-proof cuff 7. It may be formed from time to time.
  • the first layer 21 does not have to contain the antibacterial agent 24.
  • the second layer 22 (absorbent core 50) has a recessed portion 22a on the surface facing the skin.
  • the recessed portion 22a is further formed on the skin-facing surface of the second layer 22, so that the liquid retention of the laminated structure 20A is further improved. Elution of the antibacterial agent 24 can be further promoted.
  • the recessed portion 22a is a through hole (penetrating type recessed portion) penetrating the second layer 22 in the thickness direction, but may be a non-penetrating type recessed portion such as the recessed portions 21a and 23a. ..
  • the recessed depth 22D (see FIG. 4) of the recessed portion 22a of the second layer 22 is deeper than the recessed depth 21D (see FIG. 4) of the recessed portion 21a of the first layer 21.
  • the reason is the same as the reason why it is preferable that the above-mentioned magnitude relationship of "the recessed depth 23D of the recessed portion 23a of the third layer 23> the recessed depth 21D of the recessed portion 21a of the first layer 21" is established.
  • the ratio of the recess depth 22D to the recess depth 21D is 22D / 21D, preferably 3 or more, more preferably 10 or more, and preferably 200 or less, more preferably 150 or less, assuming 22D> 21D. is there.
  • the recessed depth 22D of the recessed portion 22a of the second layer 22 is preferably 0.05 mm or more, more preferably 1 mm or more, and preferably 10 mm or less, more preferably 8 mm or less.
  • the recessed portion 22D of the second layer 22 and the recessed portion 23a of the third layer 23 It may be the same as or different from the depression depth 23D. In the form shown in FIG. 4, 22D> 23D.
  • the recess depth 23D of the recess 23a of the third layer 23 is deeper than the recess depth 22D of the recess 22a of the second layer 22
  • body fluid is most likely to accumulate in the laminated structure. It is preferable because the body fluid stays in the third layer 23, which is a layer, for a relatively long time, and the elution of the antibacterial agent 24 is further promoted.
  • the ratio of the recess depth 23D to the recess depth 22D is 23D / 22D, preferably 3 or more, more preferably 10 or more, and preferably 200 or less, more preferably 150 or less, assuming 23D> 22D. is there.
  • a plurality of penetrating type or non-penetrating type recessed portions 22a are present on the skin-facing surface of the second layer 22, and a plurality of convex portions are raised toward the skin side of the wearer. It may exist.
  • the skin-facing surface of the second layer 22 is the skin-facing surface of the first layer 21 and the second layer 22. It may have a similar uneven structure. With such a configuration, the liquid retention of the second layer 22 can be further improved, and the elution of the antibacterial agent 24 can be further promoted.
  • the ratio of the total area of the recessed portion 22a to the area of the skin-facing surface of the second layer 22 is preferably 1% or more, more preferably 3%.
  • the above preferably 15% or less, and more preferably 12% or less. With such a ratio, the liquid retention of the second layer 22 can be improved.
  • the area of the recessed portion of each layer (first layer 21, second layer 22, or third layer 23) constituting the laminated structure is measured by the following method.
  • the sheet to be measured (the layer to be measured in the laminated structure) is taken out from the absorbent article, and the taken-out sheet has a length of 50 mm in the vertical direction (longitudinal direction) and a length in the horizontal direction (width direction) of the absorbent article. It is cut into a quadrangular shape in a plan view of 50 mm to prepare a cut piece of the sheet. However, if it is not possible to make a piece of this size, make a piece as large as possible. Using a microscope (Keyence Co., Ltd., VHX-1000) under the conditions of a temperature of 20 ⁇ 2 ° C.
  • an enlarged photograph of the flat surface (skin facing surface or non-skin facing surface) of the cut piece is taken. obtain. Measure the area of the depression from the enlarged photo. The area of the three recesses is measured, and the average value of the three points is taken as the area of the recess of the sheet to be measured.
  • the third layer 23 contains the antibacterial agent 24.
  • the surface sheet 3 has a two-layer structure, and in the two-layer structure surface sheet 3, the skin side layer relatively close to the wearer's skin is the first layer 21, and the wearer's skin. The non-skin side layer relatively far from is the second layer 22. Further, the skin-side core wrap sheet 52 arranged adjacent to the sheet 3 on the non-skin-facing surface side of the two-layer structure surface sheet 3 is the third layer 23.
  • the layers 21 and 23 may be inherently present, that is, they may be present at all times, or the diaper 1 may be worn, for example, a wrinkle formed in an upright state of the leak-proof cuff 7. It may be formed from time to time.
  • the first layer 21 (skin side layer of the surface sheet 3) and / or the second layer 22 (non-skin side layer of the surface sheet 3) may contain the antibacterial agent 24.
  • the recessed portion 23a of the third layer 23 is a non-penetrating recessed portion.
  • the laminated structure 20C is the same as the laminated structure 20 shown in FIG. 3 except for the above points.
  • the third layer 23 contains the antibacterial agent 24.
  • an intermediate sheet 25 which is also called a sub-layer or a second sheet, is interposed between the surface sheet 3 (first layer 21) and the skin-side core wrap sheet 52 (third layer 23).
  • the intermediate sheet 25 is the second layer 22.
  • a liquid permeable sheet such as non-woven fabric or paper can be used.
  • the recessed portion 21a (concavo-convex structure) on the skin-facing surface of the first layer 21 (surface sheet 3) and the recessed portion 23a (concave-convex structure) on the skin-facing surface of the third layer 23 (skin-side core wrap sheet 52) are described above.
  • the layers 21 and 23 may be inherently present, that is, they may be present at all times, or they are formed when the diaper 1 is worn, for example, a wrinkle formed in an upright state of the leak-proof cuff 7. It may be a thing.
  • the second layer 22 (intermediate sheet 25) may contain the antibacterial agent 24 instead of the third layer 23 (skin side core wrap sheet 52), or the third layer 23 may be further added to the third layer 23.
  • the first layer 21 (surface sheet 3) and / or the second layer 22 may contain the antibacterial agent 24.
  • the first layer 21 has a fused portion in which constituent fibers (synthetic fibers) are fused to each other.
  • a fused portion in which constituent fibers (synthetic fibers) are fused to each other.
  • a surface sheet 3 composed of a non-woven fabric can be exemplified. Since the fused portion has lower liquid permeability than the non-fused portion and it is difficult for body fluids such as urine to pass through, the first layer 21 has a fused portion so that the first layer 21 has a liquid permeability. Can be reduced and the liquid retention of the first layer 21 can be improved.
  • the fused portion of the first layer 21 exists at the forming position of the recessed portion 21a of the first layer 21. That is, it is preferable that the portion defining the bottom portion of the non-penetrating recessed portion 21a is a fused portion, which can further improve the liquid retention of the first layer 21.
  • a method of forming a fused portion at the forming position of the recessed portion 21a for example, a first layer 21 (surface sheet 3) having no recessed portion and having a flat surface is manufactured, and the first layer 21 is formed.
  • a method of applying a pressing process such as embossing with heat to a predetermined part can be mentioned. By such a pressing process, the material of the pressed portion is heated and melted to form a fused portion.
  • the ratio of the total area of the fused portion to the area of the skin-facing surface of the first layer 21 (hereinafter, "fused portion area ratio”). ”) Is preferably 1% or more, more preferably 3% or more, and preferably 15% or less, more preferably 12% or less.
  • the area ratio of the fused portion of the surface facing the skin of the first layer 21 is within such a range, the liquid retention property and the liquid permeability of the first layer 21 can be compatible at a higher level.
  • the area ratio of the fused portion of one surface (skin facing surface or non-skin facing surface) of each layer (first layer 21, second layer 22, or third layer 23) constituting the laminated structure is measured by the following method. ..
  • the sheet to be measured (the layer to be measured in the laminated structure) is taken out from the absorbent article, and the taken-out sheet has a length of 50 mm in the vertical direction (longitudinal direction) and a length in the horizontal direction (width direction) of the absorbent article. It is cut into a quadrangular shape in a plan view of 50 mm to prepare a cut piece of the sheet. However, if it is not possible to make a piece of this size, make a piece as large as possible. Using a microscope (Keyence Co., Ltd., VHX-1000) under the conditions of a temperature of 20 ⁇ 2 ° C.
  • an enlarged photograph of the flat surface (skin facing surface or non-skin facing surface) of the cut piece is taken. obtain.
  • the total area of the fused parts is obtained by counting the number of fused parts from the enlarged photograph, measuring the area per one when viewed in a plan view, and multiplying the area by the number. Next, the total area of the fused portion is divided by the area of the plane of the cut piece in which the enlarged photograph is taken to calculate the area of the fused portion per unit area, which is used as the fused portion area ratio of the surface.
  • the second layer 22 may have a fused portion in which constituent fibers (synthetic fibers) are fused to each other.
  • constituent fibers synthetic fibers
  • the second layer 22 having a fused portion include a skin-side core wrap sheet 52, an absorbent core 50, or an intermediate sheet 25, which is composed of a non-woven fabric.
  • the non-skin side layer of the surface sheet 3 having a two-layer structure includes a non-woven fabric
  • the non-skin side layer may have a fused portion. Since the second layer 22 has a fused portion, the liquid permeability of the second layer 22 can be lowered, and the liquid retention of the second layer 22 can be improved.
  • the fused portion of the second layer 22 exists at the forming position of the recessed portion 22a of the second layer 22. That is, it is preferable that the portion defining the bottom portion of the non-penetrating recessed portion 22a is a fused portion, which can further improve the liquid retention of the second layer 22.
  • the recessed portion 22a of the second layer 22 can be formed by the same method as the method of forming the recessed portion 21a of the first layer 21.
  • the ratio of the total area of the fused portion to the area of the skin-facing surface of the second layer 22 is preferably 1% or more. It is preferably 3% or more, preferably 15% or less, and more preferably 12% or less.
  • the area ratio of the fused portion on the skin-facing surface of the second layer 22 is within such a range, the liquid retention property and the liquid permeability of the second layer 22 can be compatible at a higher level.
  • the recessed portion 21a of the first layer 21 and the recessed portion 22a of the second layer 22 are integrally recessed (hereinafter, "two-layer integrated recess"). It is preferable that the constituent fibers (synthetic fibers) of the second layer 22 in the two-layer integrated recess are fused to each other. Usually, the portion that defines the bottom of the two-layer integrated recess is the fused portion. The presence of the two-layer integrated recess facilitates the accumulation of body fluids in the first layer 21 and the second layer 22, which are the two layers closest to the wearer's skin in the laminated structure, and the elution of the antibacterial agent 24 becomes more likely.
  • the laminated body in a state where the first layer 21 and the second layer 22 are laminated, the laminated body is subjected to a pressing process such as embossing with heat from the first layer 21 side. It can be formed by.
  • antibacterial agent used in the present invention those that can be blended in this kind of absorbent article can be used without particular limitation, and may be an inorganic antibacterial agent or an organic antibacterial agent, and one type may be used alone or two or more types may be used. Can be used in combination.
  • specific examples of the inorganic antibacterial agent include silver-supported zeolite and titanium oxide.
  • Specific examples of the organic antibacterial agent include sodium dodecyl sulfate, benzalkonium chloride, alkylpolyaminoethylglycine chloride and the like.
  • the content of the antibacterial agent may be appropriately set according to the use of the absorbent article, the type of the antibacterial agent, etc., and is not particularly limited, but is preferable with respect to the total mass of the laminated structure. Is 0.0005% by mass or more, more preferably 0.001% by mass or more, and preferably 0.05% by mass or less, more preferably 0.03% by mass or less.
  • the higher the content of the antibacterial agent in the laminated structure the better the antibacterial property, but if the content of the antibacterial agent is too high, the antibacterial agent gives too much irritation to the skin and the manufacturing cost is high. It can be too expensive.
  • the basis weight of the antimicrobial agent in the laminated structure according to the present invention is preferably 0.003 g / m 2 or more, more preferably 0.005 g / m 2 or more, and, preferably 0.2 g / m 2 Below, it is more preferably 0.15 g / m 2 or less.
  • the absorbent article of the present invention is not limited to the deployable disposable diaper as in the above embodiment, and broadly includes an article used for absorbing body fluid (urine, menstrual blood, loose stool, sweat, etc.) discharged from the human body.
  • Body fluid urine, menstrual blood, loose stool, sweat, etc.
  • Pants-type disposable diapers, sanitary napkins, sanitary shorts and the like that do not have a fastening structure such as the fastening member 14 and the fastening region 15 are also included.
  • the present invention has been described above based on the embodiment, the present invention can be appropriately modified without being limited to the embodiment. For example, even if a penetrating type recess and a non-penetrating type recess are mixed on the skin facing surface of one layer (typically, a third layer composed of an absorbent core) constituting the laminated structure. Good. All the parts of only one embodiment described above can be mutually used as appropriate. The following additional notes will be further disclosed with respect to the above-described embodiments of the present invention.
  • An absorbent article having a laminated structure that absorbs and retains body fluid excreted by the wearer.
  • the laminated structure includes a first layer arranged at a position relatively close to the wearer's skin, a third layer arranged at a position relatively far from the wearer's skin, the first layer, and the first layer. It has a second layer arranged between the three layers and The first layer and the third layer each have a recessed portion on the skin-facing surface. Between the second layer and the third layer, there is a space corresponding to the recessed portion of the third layer.
  • the second layer or the third layer contains an antibacterial agent and
  • the recessed portion of the first layer and the recessed portion of the third layer are absorbent articles existing at positions overlapping with the antibacterial agent arrangement region in which the antibacterial agent is arranged in a plan view.
  • ⁇ 3> The absorbent article according to ⁇ 2>, wherein the ratio of the recess depth of the recessed portion of the third layer to the recessed depth of the recessed portion of the first layer is 3 or more and 200 or less, preferably 10 or more and 150 or less. ..
  • ⁇ 4> The absorbent article according to ⁇ 2> or ⁇ 3>, wherein the depth of the recessed portion of the third layer is 0.05 mm or more and 10 mm or less, preferably 1 mm or more and 8 mm or less.
  • ⁇ 5> The absorbent article according to any one of ⁇ 2> to ⁇ 4>, wherein the depth of the recessed portion of the first layer is 0.05 mm or more and 1 mm or less, preferably 0.075 mm or more and 0.8 mm or less.
  • ⁇ 6> The absorbent article according to any one of ⁇ 1> to ⁇ 5>, wherein the first layer contains an antibacterial agent.
  • ⁇ 7> The absorbent article according to any one of ⁇ 1> to ⁇ 6>, wherein the first layer has a fused portion in which constituent fibers are fused to each other.
  • ⁇ 8> The absorbent article according to ⁇ 7>, wherein the ratio of the total area of the fused portion to the area of the skin-facing surface of the first layer is 1% or more and 15% or less, preferably 3% or more and 12% or less. .. ⁇ 9> 4.
  • ⁇ 11> The absorbent article according to any one of ⁇ 1> to ⁇ 10>, wherein the second layer contains an antibacterial agent.
  • ⁇ 12> The absorbent article according to any one of ⁇ 1> to ⁇ 11>, wherein the second layer has a fused portion in which constituent fibers are fused to each other.
  • ⁇ 13> The absorbent article according to ⁇ 12>, wherein the ratio of the total area of the fused portion to the area of the skin-facing surface of the second layer is 1% or more and 15% or less, preferably 3% or more and 12% or less. .. ⁇ 14> The absorbent article according to any one of ⁇ 1> to ⁇ 13>, wherein the second layer has a recessed portion on the surface facing the skin.
  • ⁇ 15> The absorbent article according to ⁇ 14>, wherein the recessed depth of the recessed portion of the second layer is deeper than the recessed depth of the recessed portion of the first layer.
  • ⁇ 16> The above ⁇ 14> or ⁇ 15>, wherein the ratio of the depression depth of the recessed portion of the second layer to the recessed depth of the recessed portion of the first layer is 3 or more and 200 or less, preferably 10 or more and 150 or less.
  • Absorbent article. ⁇ 17> The absorbent article according to any one of ⁇ 14> to ⁇ 16>, wherein the depth of the recessed portion of the second layer is 0.05 mm or more and 10 mm or less, preferably 1 mm or more and 8 mm or less.
  • ⁇ 18> There is a portion in which the recessed portion of the first layer and the recessed portion of the second layer are integrally recessed, and the constituent fibers of the second layer in the recessed portion are fused to each other. 17>
  • the absorbent article according to any one of. ⁇ 19> The method according to any one of ⁇ 14> to ⁇ 18>, wherein a plurality of the recessed portions are present on the skin-facing surface of the second layer, and a plurality of convex portions are present toward the skin side of the wearer.
  • Absorbent article is a portion in which the recessed portion of the first layer and the recessed portion of the second layer are integrally recessed, and the constituent fibers of the second layer in the recessed portion are fused to each other. 17>
  • the absorbent article according to any one of. ⁇ 19> The method according to any one of ⁇ 14> to ⁇ 18>, wherein a plurality of the recessed portions are present on the skin-facing surface of the second layer, and a pluralit
  • ⁇ 20> The absorbent article according to ⁇ 19>, wherein the ratio of the total area of the recessed portion to the area of the skin-facing surface of the second layer is 1% or more and 15% or less, preferably 3% or more and 12% or less.
  • ⁇ 21> The absorbent article according to any one of ⁇ 1> to ⁇ 20>, wherein the second layer has a lower liquid permeability than the first layer.
  • ⁇ 22> The absorbent article according to any one of ⁇ 1> to ⁇ 21>, wherein the third layer contains an antibacterial agent.
  • the third layer contains an antibacterial agent.
  • the basis weight of the formation position of the recessed portion is lower than the basis weight of the peripheral portion of the recessed portion.
  • the recessed portion of the third layer is a through hole penetrating the third layer in the thickness direction.
  • the third layer is a non-penetrating type recess, and the ratio of the basis weight of the formation position of the recess to the basis weight of the peripheral portion of the recess is 0.08 or more and 0.8 or less, preferably 0.
  • the absorbent article according to ⁇ 24> which is 1 or more and 0.6 or less.
  • the absorbent article according to ⁇ 24> or ⁇ 25>, wherein the basis weight at the position where the recess is formed is 50 g / m 2 or more and 500 g / m 2 or less, preferably 100 g / m 2 or more and 400 g / m 2 or less.
  • the second layer has a recess on the surface facing the skin.
  • ⁇ 28> The absorbent article according to ⁇ 27>, wherein the ratio of the recess depth of the recessed portion of the third layer to the recessed depth of the recessed portion of the second layer is 3 or more and 200 or less, preferably 10 or more and 150 or less.
  • ⁇ 29> The absorbent article according to any one of ⁇ 1> to ⁇ 28>, wherein the third layer contains a cellulose fiber and a water-absorbent polymer.
  • the third layer contains a cellulose fiber and a water-absorbent polymer.
  • the content of the cellulose fibers in the third layer is 20% by mass or more and 80% by mass or less, preferably 30% by mass or more and 70% by mass or less.
  • the content of the water-absorbent polymer in the third layer is 20% by mass or more and 80% by mass or less, preferably 30% by mass or more and 70% by mass or less.
  • ⁇ 32> The absorbent article according to any one of ⁇ 1> to ⁇ 31>, wherein the third layer has a lower liquid permeability than the second layer.
  • ⁇ 33> It has a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and is directed toward the wearer's skin side at the time of wearing along each of both side portions of the laminated structure along the vertical direction.
  • a leak-proof cuff that stands up is arranged, The absorbent article according to any one of ⁇ 1> to ⁇ 32>, wherein wrinkles are formed in at least one of the plurality of layers constituting the laminated structure in the upright state of the leak-proof cuff.
  • the antibacterial agent is an inorganic antibacterial agent or an organic antibacterial agent.
  • ⁇ 35> The absorbent article according to ⁇ 34>, wherein the organic antibacterial agent is one or two selected from silver-supported zeolite and titanium oxide.
  • the organic antibacterial agent is one or two selected from sodium dodecyl sulfate, benzalkonium chloride, and alkylpolyaminoethylglycine chloride.
  • ⁇ 37> In any one of ⁇ 1> to ⁇ 36>, there is no other layer between the first layer and the second layer, and there is no other layer between the second layer and the third layer.
  • the first layer is a surface sheet arranged close to the wearer's skin
  • the third layer is a liquid-retaining absorbent core
  • the second layer is a core wrap covering the absorbent core.
  • the absorbable article of the present invention has excellent antibacterial properties, inconveniences caused by the growth of bacteria, for example, skin troubles of the wearer and generation of an unpleasant odor when worn can be effectively suppressed.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2020/031190 2019-08-26 2020-08-19 吸収性物品 WO2021039513A1 (ja)

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CN114145912A (zh) * 2021-12-31 2022-03-08 福建恒安集团有限公司 一种干爽瞬吸、定格潮涌的卫生巾
WO2023238666A1 (ja) * 2022-06-07 2023-12-14 花王株式会社 吸収性物品

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JP2018099203A (ja) * 2016-12-19 2018-06-28 花王株式会社 吸収性物品

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JP6464045B2 (ja) * 2015-06-25 2019-02-06 ユニ・チャーム株式会社 吸収性物品、及びその製造方法
CN105833336A (zh) * 2016-06-02 2016-08-10 湖南细心信息科技有限公司 一种具有抗菌保健功能的女士护垫
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JP2018057786A (ja) * 2016-08-10 2018-04-12 山田　菊夫 体液吸収用物品及び体液吸収用物品製造方法
JP2018099203A (ja) * 2016-12-19 2018-06-28 花王株式会社 吸収性物品

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Publication number Priority date Publication date Assignee Title
CN114145912A (zh) * 2021-12-31 2022-03-08 福建恒安集团有限公司 一种干爽瞬吸、定格潮涌的卫生巾
WO2023238666A1 (ja) * 2022-06-07 2023-12-14 花王株式会社 吸収性物品
JP7487262B2 (ja) 2022-06-07 2024-05-20 花王株式会社 吸収性物品

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