WO2016060219A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2016060219A1
WO2016060219A1 PCT/JP2015/079235 JP2015079235W WO2016060219A1 WO 2016060219 A1 WO2016060219 A1 WO 2016060219A1 JP 2015079235 W JP2015079235 W JP 2015079235W WO 2016060219 A1 WO2016060219 A1 WO 2016060219A1
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WO
WIPO (PCT)
Prior art keywords
absorbent article
fiber
sheet
article according
fibers
Prior art date
Application number
PCT/JP2015/079235
Other languages
English (en)
Japanese (ja)
Inventor
石黒　健司
絵里香 渡邉
加藤　隆弘
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 CN201580054221.XA priority Critical patent/CN106794082B/zh
Priority claimed from JP2015203671A external-priority patent/JP6108417B2/ja
Publication of WO2016060219A1 publication Critical patent/WO2016060219A1/fr

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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
    • 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
    • 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
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers

Definitions

  • the present invention relates to an absorbent article.
  • Various surface sheets for absorbent articles such as sanitary napkins have been proposed that have a concavo-convex structure on the skin contact surface.
  • the present applicant has proposed a surface sheet formed by linearly bonding a sheet for forming irregularities in which a large number of hook-shaped portions are formed in parallel to each other between the hook-shaped portions (Patent Document 1).
  • Patent Document 1 a surface sheet formed by linearly bonding a sheet for forming irregularities in which a large number of hook-shaped portions are formed in parallel to each other between the hook-shaped portions.
  • the present applicant places a web containing low-stretch non-elastic fibers on one side of a web containing elastic fibers, and applies an air-through hot air treatment to these webs to heat the intersections of the fibers.
  • the present invention comprises an absorbent article having a longitudinal direction and a width direction, comprising a liquid-permeable surface sheet that forms a skin contact surface, a back sheet, and an absorbent body interposed between the two sheets.
  • the top sheet is composed of a non-woven fabric having a concavo-convex structure in which strip-like ridges and recesses extending in the longitudinal direction are alternately arranged in the width direction, and is joined to an adjacent lower sheet in the recess,
  • the ridge portion has a hollow structure between the lower sheet
  • the nonwoven fabric includes fibers having a large diameter portion and a small diameter portion having different fiber diameters
  • the absorber is
  • the present invention provides an absorbent article having a plurality of highly flexible regions whose bending rigidity is lower than that of other portions at a plurality of locations in the width direction.
  • FIG. 1 is a perspective view showing an incontinence pad according to an embodiment of the present invention.
  • 2A is an enlarged cross-sectional view taken along the line II-II in FIG. 1
  • FIG. 2B is a view showing the back surface (surface on the non-skin contact surface side) of the absorbent body of the incontinence pad shown in FIG. is there.
  • FIG. 3 is a perspective view showing a nonwoven fabric used as a top sheet of the incontinence pad shown in FIG.
  • FIG. 4 is a schematic diagram illustrating a cross section in the thickness direction of the nonwoven fabric illustrated in FIG. 3.
  • FIG. 5 is a diagram for explaining a state in which the constituent fibers constituting the nonwoven fabric shown in FIG. 3 are fixed at the heat fusion part.
  • FIG. 1 is a perspective view showing an incontinence pad according to an embodiment of the present invention.
  • 2A is an enlarged cross-sectional view taken along the line II-II in FIG. 1
  • FIG. 2B
  • FIG. 6 is a partially extracted enlarged plan view of the skin contact surface of the incontinence pad, showing an example of the arrangement of the joint portion between the concave strip portion of the top sheet and the lower sheet.
  • FIG. 7 is an explanatory diagram of the function and effect of the present invention.
  • FIG. 8 is a cross-sectional view (corresponding to FIG. 2A) showing an incontinence pad according to another embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing a manufacturing apparatus suitably used for manufacturing the nonwoven fabric shown in FIG. 10 is a cross-sectional view taken along the line DD of FIG.
  • FIG. 11A to FIG. 11C are explanatory views for explaining a state in which a plurality of small diameter portions and large diameter portions are formed in one constituent fiber between adjacent fused portions.
  • 12 (a) to 12 (c) are partially enlarged plan views of the absorbent body showing another example of the arrangement of the compression portions that form the highly flexible region.
  • FIG. 13 is a cross-sectional view
  • the nonwoven fabric manufactured by the manufacturing method of patent document 2 is formed so that the non-elastic fiber in which the thickness along the longitudinal direction is not uniform may be included.
  • the touch is good.
  • an absorbent article with further improved quality such as touch.
  • An object of the present invention relates to providing an absorbent article that can eliminate the disadvantages of the above-described prior art.
  • FIG. 1 is a perspective view of an incontinence pad 10 (hereinafter also simply referred to as “incontinence pad 10”) according to an embodiment of the present invention.
  • 2A is an enlarged cross-sectional view taken along the line II-II in FIG. 1
  • FIG. 2B is a view showing the back surface (surface on the non-skin contact surface side) of the absorbent body of the incontinence pad 10 shown in FIG. It is.
  • the incontinence pad 10 includes a liquid-permeable top sheet 2 that forms a skin contact surface, a liquid-impermeable back sheet 3, and a space between the two sheets 2 and 3.
  • the absorbent body 4 is provided.
  • Liquid impermeability includes liquid impermeability.
  • the incontinence pad 10 has a vertically long shape, and has a longitudinal direction X and a width direction Y.
  • the longitudinal direction X coincides with the wearer's front-rear direction when the incontinence pad 10 is worn, and the width direction Y is a direction orthogonal to the longitudinal direction X in the plan view of the incontinence pad 10.
  • the incontinence pad 10 has an oval shape in plan view.
  • the top sheet 2 and the back sheet 3 extend from the periphery of the absorber 4.
  • an adhesive portion (not shown) for fixing to underwear such as shorts is provided.
  • the skin contact surface is a surface directed to the wearer's skin side when worn in the absorbent article or a component thereof, and the non-skin contact surface is the wearer's skin when worn in the absorbent article or component thereof. It is the surface that is directed to the side opposite to the skin side (usually the underwear side).
  • the absorbent body 4 of the incontinence pad 10 includes an absorbent core 40 and a core wrap sheet 41 that wraps the absorbent core 40.
  • the absorptive core 40 can be comprised from the laminated fiber body of liquid absorbing fibers, such as a pulp, for example, and the mixed fiber body of this liquid absorbing fiber and a water absorbing polymer.
  • the liquid-absorbing fibers constituting the absorbent core 40 include cellulose-based hydrophilic fibers such as pulp fibers, rayon fibers, cotton fibers, and cellulose acetate.
  • polyolefin fibers such as polyethylene and polypropylene, and condensation fibers such as polyester and polyamide may be included.
  • water-absorbing polymers include sodium polyacrylate, (acrylic acid-vinyl alcohol) copolymer, cross-linked sodium polyacrylate, (starch-acrylic acid) graft copolymer, and (isobutylene-maleic anhydride) copolymer. Examples thereof include a polymer and a saponified product thereof, and polyaspartic acid.
  • Each of the fibers and the water-absorbing polymer can be used alone or in combination of two or more.
  • the core wrap sheet 41 a water-permeable fiber sheet such as tissue paper or nonwoven fabric is preferably used.
  • the core wrap sheet 41 may wrap the entire absorbent core 40 with one sheet, or may wrap the entire absorbent core 40 with two or more core wrap sheets.
  • the skin contact surface side and the non-skin contact surface side of the absorbent core 40 may be covered with separate sheets.
  • the thickness of the absorber 4 is preferably 1 mm or more, more preferably 2 mm or more, preferably 15 mm or less, more preferably 10 mm or less, and preferably 1 mm or more and 15 mm or less, more preferably 2 mm or more and 10 mm or less. is there.
  • the thickness of the absorber 4 is measured by the following method.
  • the thickness T is measured using a peacock precision measuring instrument (model R1-C), which is a micrometer having two parallel pressure surfaces (a fixed pressure surface and a movable pressure surface). Measurement is performed at 5 mm and a pressure of 100 kPa or less.
  • a 20 mm ⁇ 20 mm plate (weight: 5.4 g) is placed on the test piece, the measuring element movable pressurizing surface is operated at a speed of 2 mm / s, applied to the plate, and the value immediately after stabilization is read.
  • the pressure between the pressing surfaces (pressure applied to the test piece) is 1.3 kPa or less.
  • the back sheet 3 various materials conventionally used for the back sheet of the absorbent article can be used without particular limitation.
  • a liquid-impermeable or water-repellent resin film, a resin film, A laminate sheet with a non-woven fabric can be used.
  • Leak-proof cuffs 8 extending in the longitudinal direction are respectively provided at positions on both sides in the width direction Y on the skin contact surface side of the incontinence pad 10.
  • the leak-proof cuff 8 has a free end 8a and a fixed area 8b extending in the longitudinal direction.
  • the fixed area 8b is located on the top sheet 2.
  • the leak-proof cuff 8 is fixed to the top sheet 2 in the fixing region 8b. Further, the fixing region 8b of the leak-proof cuff 8 extends outward in the width direction Y, and the extending portion and the width direction extending portion of the back sheet 3 are joined to form the side flap 7. .
  • an elastic member 8c extending along the longitudinal direction X is attached in a stretched state at a position at or near the free end 8a.
  • a plurality of elastic members 8c are arranged substantially parallel to each other.
  • the portion where the plurality of elastic members 8c are attached forms a planar elastic region 8d.
  • the planar elastic region 8d has a predetermined length along the width direction Y and extends along the longitudinal direction X at least at the position of the wearer's excretory part.
  • the planar elastic region 8d can be expanded and contracted along the longitudinal direction X.
  • the leak-proof cuff 8 has a planar elastic structure in which the position between the free end 8a and the fixed end 8b rises in a substantially L shape toward the wearer's body.
  • the region 8d is in contact with the wearer's skin and prevents side leakage of the liquid.
  • the topsheet 2 in the incontinence pad 10 of the present embodiment is a non-woven fabric having a concavo-convex structure in which streaky ridges 13 and ridges 14 extending in the longitudinal direction X are alternately arranged in the width direction, as shown in FIG. 1 is comprised. Further, as shown in FIG. 2, the topsheet 2 is joined to the adjacent lower sheet 6 at the concave portion 14, and the convex portion 13 has a hollow structure between the lower sheet 6. is doing. Moreover, the nonwoven fabric 1 which comprises the surface sheet 2 contains the fiber 11 which has the large diameter part 17 and the small diameter parts 16 and 16 from which a fiber diameter mutually differs, as shown in FIG.
  • FIG. 3 shows a perspective view of the nonwoven fabric 1 (hereinafter also referred to as “nonwoven fabric 1”) used as the top sheet 2 in the incontinence pad 10 of the present embodiment.
  • FIG. 4 is a schematic diagram showing a cross section in the thickness direction of the nonwoven fabric 1 shown in FIG. 3.
  • FIG. 5 is an enlarged schematic view of the constituent fibers 11 of the nonwoven fabric 1 shown in FIG.
  • the nonwoven fabric 1 is a nonwoven fabric provided with a plurality of fusion portions 12 (see FIG. 5) formed by heat-sealing the intersections of the constituent fibers 11.
  • the "one direction” where the protruding line part 13 and the recessed line part 14 extend is the same direction as the longitudinal direction X of the incontinence pad 10, and in the nonwoven fabric 1, the protruding line part “One direction” in which 13 and the concave strip portion 14 extend is also referred to as an X direction.
  • the nonwoven fabric 1 includes a plurality of ridge portions 13 in which the cross-sectional shapes of the front and back surfaces a and b are convex upward in the thickness direction (Z direction), It has the concave line part 14 located between adjacent convex line parts 13 and 13.
  • the concave stripe part 14 has a concave shape in which the cross-sectional shapes of the front and back surfaces a and b are both upward in the thickness direction (Z direction) of the nonwoven fabric.
  • the cross-sectional shape of front and back both surfaces a and b has comprised the convex shape toward the downward direction of the thickness direction (Z direction) of a nonwoven fabric.
  • Each of the plurality of ridges 13 extends continuously in one direction (X direction) of the nonwoven fabric 1, and each of the plurality of ridges 14 extends continuously in one direction X of the nonwoven fabric 1. I am doing.
  • the ridges 13 and the ridges 14 are parallel to each other and are alternately arranged in a direction (Y direction) orthogonal to the one direction (X direction).
  • the nonwoven fabric 1 is manufactured by subjecting the fiber sheet 1a to uneven processing using a pair of uneven rollers 401 and 402 that mesh with each other.
  • One direction (X direction) of the nonwoven fabric 1 described above is the same direction as the machine direction (MD, flow direction) when the nonwoven fabric 1 is manufactured by performing uneven processing on the fiber sheet 1a.
  • the direction (Y direction) orthogonal to the direction (X direction) is the same direction as the orthogonal direction (CD, roll axis direction) orthogonal to the machine direction (MD, flow direction).
  • the constituent fiber 11 of the nonwoven fabric 1 contains high elongation fibers.
  • the high elongation fiber included in the constituent fiber 11 means not only a fiber having a high elongation at the raw material fiber stage, but also a fiber having a high elongation at the stage of the produced nonwoven fabric 1.
  • “High elongation fiber” refers to a composite obtained by melt spinning at a low speed as described in paragraph [0033] of Japanese Patent Application Laid-Open No. 2010-168715, excluding stretchable fibers that have elasticity (elastomer) and stretch.
  • the heat-extensible fiber which is obtained by changing the crystal state of the resin by heating and / or crimping without stretching, or polypropylene or polyethylene Fibers manufactured using relatively low spinning speeds using a resin such as polyethylene, polypropylene-polypropylene copolymers with low crystallinity, or fibers manufactured by dry blending polyethylene into polypropylene and spinning, etc. Is mentioned.
  • the high elongation fiber is preferably a core-sheath type composite fiber having heat-fusibility.
  • the core-sheath type composite fiber may be a concentric core-sheath type, an eccentric core-sheath type, a side-by-side type, or a deformed type, but is preferably a concentric core-sheath type.
  • the fineness of the high elongation fiber is 1.0 dtex or more and 10.0 dtex or less at the raw material stage. Is preferable, and more preferably 2.0 dtex or more and 8.0 dtex or less.
  • the constituent fibers 11 of the nonwoven fabric 1 may be configured to include other fibers in addition to the high elongation fibers, but are preferably configured only from the high elongation fibers.
  • Other fibers include, for example, a non-heat-extensible core-sheath-type heat-fusible composite fiber containing two components having different melting points, or a fiber that does not inherently have heat-fusibility ( Examples thereof include natural fibers such as cotton and pulp, rayon and acetate fibers).
  • the proportion of the high elongation fibers in the nonwoven fabric 1 is preferably 50% by mass to 100% by mass, and more preferably It is 80 mass% or more and 100 mass% or less.
  • the heat-extensible fiber which is a high-stretch fiber, is a composite fiber that has been subjected to unstretched or weakly stretched treatment at the raw material stage.
  • a 1st resin component is a component which expresses the heat
  • a 2nd resin component is a component which expresses heat-fusibility.
  • the melting points of the first resin component and the second resin component were determined by thermal analysis of a finely cut fiber sample (sample weight 2 mg) using a differential scanning calorimeter (DSC6200 manufactured by Seiko Instruments Inc.) at a heating rate of 10 ° C./min.
  • the melting peak temperature of each resin is measured and defined by the melting peak temperature.
  • the resin is defined as “resin having no melting point”.
  • the temperature at which the second resin component is fused to such an extent that the strength of the fusion point of the fiber can be measured is used as the temperature at which the molecular flow of the second resin component begins, and this is used instead of the melting point.
  • the polyethylene resin is included as a 2nd resin component which comprises a sheath part.
  • the polyethylene resin include low density polyethylene (LDPE), high density polyethylene (HDPE), and linear low density polyethylene (LLDPE).
  • LDPE low density polyethylene
  • HDPE high density polyethylene
  • LLDPE linear low density polyethylene
  • a high density polyethylene having a density of 0.935 g / cm 3 or more and 0.965 g / cm 3 or less is preferable.
  • the second resin component constituting the sheath is preferably a polyethylene resin alone, but other resins can also be blended.
  • Other resins to be blended include polypropylene resin, ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer (EVOH), and the like.
  • the 2nd resin component which comprises a sheath part it is preferable that 50 mass% or more in the resin component of a sheath part is 70 to 100 mass% especially polyethylene resin.
  • the polyethylene resin preferably has a crystallite size of 10 nm or more and 20 nm or less, and more preferably 11.5 nm or more and 18 nm or less.
  • a resin component having a melting point higher than that of the polyethylene resin that is a constituent resin of the sheath portion can be used without any particular limitation.
  • the resin component constituting the core include polyolefin resins such as polypropylene (PP) (excluding polyethylene resin), polyester resins such as polyethylene terephthalate (PET), and polybutylene terephthalate (PBT).
  • PP polypropylene
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • polyamide-based polymers, copolymers having two or more resin components, and the like can also be used.
  • a plurality of types of resins can be blended and used.
  • the melting point of the core is the melting point of the resin having the highest melting point.
  • the difference between the melting point of the first resin component constituting the core part and the melting point of the second resin component constituting the sheath part is 20 ° C. or higher. It is preferable that it is 150 degrees C or less.
  • the preferred orientation index of the first resin component in the heat-extensible fiber which is a high elongation fiber, is naturally different depending on the resin used.
  • the orientation index may be 60% or less. Preferably, it is 40% or less, more preferably 25% or less.
  • the orientation index is preferably 25% or less, more preferably 20% or less, and still more preferably 10% or less.
  • the second resin component preferably has an orientation index of 5% or more, more preferably 15% or more, and still more preferably 30% or more.
  • the orientation index is an index of the degree of orientation of the polymer chain of the resin constituting the fiber.
  • the orientation index of the first resin component and the second resin component is determined by the method described in paragraphs [0027] to [0029] of JP 2010-168715 A.
  • a method for achieving the orientation index as described above for each resin component in the thermally extensible composite fiber is described in paragraphs [0033] to [0036] of JP-A No. 2010-168715.
  • the elongation of the high elongation fiber is preferably 100% or more and 800% or less, more preferably 200% or more and 500% or less, and further preferably 250% or more and 400% or less at the raw material stage.
  • the elongation of the high elongation fiber conforms to JISL-1015, and the measurement is based on the measurement environment temperature and humidity of 20 ⁇ 2 ° C, 65 ⁇ 2% RH, the tensile tester gripping distance of 20mm, and the tensile speed of 20mm / min.
  • the gripping interval is set. Measure by setting to 10 mm or 5 mm.
  • the ratio of the first resin component to the second resin component (mass ratio, the former: latter) in the high elongation fiber is 10:90 to 90:10, particularly 20:80 to 80:20, especially in the raw material stage. It is preferably 50:50 to 70:30.
  • the fiber length of the high elongation fiber one having an appropriate length is used according to the method for producing the nonwoven fabric. For example, when the nonwoven fabric is manufactured by the card method as described later, the fiber length is preferably about 30 to 70 mm.
  • the fiber diameter of the high elongation fiber is appropriately selected according to the specific use of the nonwoven fabric at the raw material stage.
  • the nonwoven fabric is used as a constituent member of an absorbent article such as a surface sheet of the absorbent article, it is preferable to use a nonwoven fabric having a size of 10 ⁇ m to 35 ⁇ m, particularly 15 ⁇ m to 30 ⁇ m.
  • the fiber diameter is measured by the following method.
  • the fiber diameter ( ⁇ m) is measured by using a scanning electron microscope (JCM-5100 manufactured by JEOL Ltd.) and observing the cross section of the fiber at 200 to 800 times.
  • the cross section of the fiber is obtained by cutting the fiber using a feather razor (product number FAS-10, manufactured by Feather Safety Razor Co., Ltd.). For each extracted fiber, the fiber diameter when approximated to a circle is measured at five locations, and the average value of the five measured values is taken as the fiber diameter.
  • the heat-extensible fibers that are high-stretch fibers include, in addition to the above-described heat-extensible fibers, Japanese Patent No. 4131852, Japanese Patent Laid-Open No. 2005-350836, Japanese Patent Laid-Open No. 2007-303035, The fibers described in JP 2007-204899 A, JP 2007-204901 A, and JP 2007-204902 A can also be used.
  • the nonwoven fabric of the present invention focuses on one constituent fiber 11 among the constituent fibers 11 of the nonwoven fabric 1, and the constituent fiber 11 is between adjacent fusion portions 12 and 12.
  • a large-diameter portion 17 having a large fiber diameter sandwiched between two small-diameter portions 16 and 16 having a small fiber diameter is provided.
  • a small diameter portion 16 having a small fiber diameter extends from the landing portion 12 with substantially the same fiber diameter.
  • the large-diameter portion 17 having a fiber diameter larger than that of the small-diameter portion 16 between the small-diameter portions 16 and 16 extending from the adjacent fusion portions 12 and 12. Are extended with substantially the same fiber diameter.
  • the non-woven fabric 1 focuses on one constituent fiber 11 and moves from one fused part 12 to the other fused part 12 of the adjacent fused parts 12, 12. It has constituent fibers 11 arranged in the order of a small diameter portion 16 on the side of the attachment portion 12, one large diameter portion 17, and a small diameter portion 16 on the side of the other fusion portion 12.
  • the low-rigidity small-diameter portion 16 is adjacent to the fused portion 12 where the rigidity of the nonwoven fabric 1 is increased, so that the flexibility of the nonwoven fabric 1 is improved and the touch is improved. Moreover, the softness
  • the nonwoven fabric 1 focuses on one constituent fiber 11 among the constituent fibers 11 of the nonwoven fabric 1, and includes a plurality of large-diameter portions 17 between the adjacent fusion portions 12, 12. (2 in the nonwoven fabric 1) It has the constituent fiber 11 provided.
  • the non-woven fabric 1 focuses on one constituent fiber 11 and moves from one fused part 12 to the other fused part 12 of the adjacent fused parts 12, 12.
  • Constituent fibers arranged in the order of the small-diameter portion 16 on the bonding portion 12 side, the first large-diameter portion 17, the small-diameter portion 16, the second large-diameter portion 17, and the small-diameter portion 16 on the other fused portion 12 side.
  • the nonwoven fabric 1 pays attention to one constituent fiber 11, and preferably has one large-diameter portion 17 between adjacent fused portions 12, 12 from the viewpoint of improving the touch and reducing the strength of the nonwoven fabric. 5 or less, more preferably 1 or more and 3 or less.
  • the ratio (L 16 / L 17 ) of the fiber diameter (diameter L 16 ) of the small diameter portion 16 to the fiber diameter (diameter L 17 ) of the large diameter portion 17 is preferably 0.5 or more and 0.8 or less, more preferably 0. .55 or more and 0.7 or less.
  • the fiber diameter (diameter L 16 ) of the small-diameter portion 16 is preferably 5 ⁇ m or more and 28 ⁇ m or less, more preferably 6.5 ⁇ m or more and 20 ⁇ m or less, and particularly preferably 7.5 ⁇ m or more and 16 ⁇ m or less from the viewpoint of improving the touch. is there.
  • the fiber diameter (diameter L 17 ) of the large diameter portion 17 is preferably 10 ⁇ m or more and 35 ⁇ m or less, more preferably 13 ⁇ m or more and 25 ⁇ m or less, and particularly preferably 15 ⁇ m or more and 20 ⁇ m or less from the viewpoint of improving the touch.
  • the fiber diameters (diameters L 16 and L 17 ) of the small-diameter portion 16 and the large-diameter portion 17 are measured in the same manner as the fiber diameter measurement described above.
  • the nonwoven fabric of the present invention pays attention to one constituent fiber 11 among the constituent fibers 11 of the nonwoven fabric 1, and a small diameter portion 16 adjacent to the fused portion 12 to a large diameter portion 17.
  • the change point 18 is arranged within a range of 3 of the interval T between the fusion parts 12, 12 adjacent to the fusion part 12.
  • the change point 18 of the nonwoven fabric of the present invention is continuously from the small diameter portion 16 extending with a small fiber diameter to the large diameter portion 17 extending with a fiber diameter larger than the small diameter portion 16. It means a part where the fiber diameter changes extremely in one step without including a part that gradually changes or a part that continuously changes over a plurality of stages.
  • the change point 18 of the nonwoven fabric of this invention is the 1st resin component which comprises a core part, and 2nd resin which comprises a sheath part. It does not include a state in which the fiber diameter is changed by peeling between the components, and it means a part where the fiber diameter is changed by stretching.
  • the fact that the changing point 18 is arranged within a range of 1/3 of the interval T between the adjacent fused portions 12 and 12 from the fused portion 12 means that the constituent fibers 11 of the nonwoven fabric 1 are randomly extracted.
  • the constituent fibers 11 are formed between adjacent fused portions 12 and 12 of the constituent fibers 11. Enlarge it so that it can be observed (100 to 300 times).
  • the interval T between the centers of the adjacent fused portions 12 and 12 is divided into three equal parts, and the region AT on the side of one fused portion 12, the region BT on the side of the other fused portion 12, and the center region CT Break down.
  • the change point 18 is arranged in the area AT or the area BT.
  • the non-woven fabric 1 in which the changing point 18 is disposed within a range of 1/3 of the interval T between the adjacent fused portions 12, 12 from the fused portion 12 is the number of the constituent fibers 11 of the non-woven fabric 1 20.
  • the constituent fiber 11 in which the change point 18 is arranged in the region AT or the region BT means a nonwoven fabric in which at least one of the 20 constituent fibers 11 is present. Specifically, from the viewpoint of improving the touch, it is preferably 1 or more, more preferably 5 or more, and particularly preferably 10 or more.
  • the nonwoven fabric 1 is comprised from the top part area
  • the top region 13a, the bottom region 13b, and the side region 13c extend continuously in one direction (X direction) of the nonwoven fabric 1.
  • the top region 13a, the bottom region 13b, and the side region 13c when the nonwoven fabric 1 is viewed in a cross-section along the thickness direction Z, divides the thickness of the nonwoven fabric 1 in the Z direction into three equal parts,
  • the top region 13a is distinguished from the central region as the side region 13c and the lower region as the bottom region 13b.
  • the top of the ridge 13 is formed from the top region 13a, and the bottom of the ridge 14 is formed from the bottom region 13b.
  • the fiber density of the side region 13c is lower than the fiber density of the top region 13a and the fiber density of the bottom region 13b.
  • the fiber density is the number of fibers per unit area in the cross section of the nonwoven fabric 1. Therefore, the side area 13c is a sparse area in which the number of fibers is small (the distance between fibers is large) compared to the top area 13a and the bottom area 13b, and as a whole, the air permeability is improved. Liquid permeability is also improved.
  • the fiber density of the side region 13c is formed to be the smallest, the ridges 13 can easily follow the movement of the wearer's skin, and good skin contact can be realized.
  • the nonwoven fabric 1 may be manufactured according to the manufacturing method described later.
  • the ratio (D 13c / D 13a , D 13c / D 13a ) of the fiber density (D 13c ) of the side region 13c to the fiber density (D 13a ) in the top region 13a or the fiber density (D 13b ) in the bottom region 13b. ) Is preferably 0.15 or more and 0.9 or less, more preferably 0.2 or more and 0.8 or less.
  • the specific value of the fiber density of the nonwoven fabric 1 is such that the fiber density (D 13a ) in the top region 13a is preferably 90 fibers / mm 2 or more and 200 fibers / mm 2 or less, more preferably 100 fibers / mm 2. mm 2 or more and 180 pieces / mm 2 or less.
  • the fiber density (D 13b) at the bottom area 13b is preferably 80 present / mm 2 or more 200 present / mm 2 or less, more preferably 90 present / mm 2 or more 180 lines / mm 2 or less.
  • the fiber density of the side region 13c (D 13c) is preferably 30 lines / mm 2 or more eighty / mm 2 or less, more preferably 40 present / mm 2 or more 70 yarns / mm 2 or less.
  • the method for measuring the fiber density is as follows.
  • the nonwoven fabric is cut along the thickness direction Z using a feather razor (product number FAS-10, manufactured by Feather Safety Razor Co., Ltd.).
  • the top region 13a which is the upper part when the thickness of the cut surface of the nonwoven fabric is divided into three equal parts in the Z direction, is magnified using a scanning electron microscope (fiber cross section is 30 to 30%). The magnification is adjusted so that about 60 fibers can be measured (150 to 500 times), and the number of cross sections of the fibers cut by the cut surface per fixed area (about 0.5 mm 2 ) is counted.
  • the fiber density in the top region 13a is converted into the number of cross-sections of fibers per 1 mm 2 and this is defined as the fiber density in the top region 13a.
  • the measurement is performed at three locations, and the average is the fiber density of the sample.
  • the fiber density in the bottom region 13b is obtained by measuring the lower part when the thickness of the cut surface of the nonwoven fabric is divided into three equal parts in the Z direction.
  • the fiber density of the side region 13c is obtained by measuring the central portion when the thickness of the cut surface of the nonwoven fabric is divided into three equal parts in the Z direction.
  • JCM-5100 (trade name) manufactured by JEOL Ltd. is used.
  • the nonwoven fabric 1 of this embodiment is the number of the fibers which have the change point 18 in the constituent fiber which comprises the top area
  • the ratio (N 13c / N 13a , N 13c / N 13b ) of the number (N 13c ) of fibers having changing points in the constituent fibers to be formed is preferably 2 or more and 20 or less, more preferably 5 or more and 20 or less.
  • the number (N 13a ) of fibers having the change point 18 in the constituent fibers constituting the top region 13a is preferably one or more.
  • the number (N 13b ) of fibers having the change point 18 in the constituent fibers constituting the bottom region 13b is preferably 1 or more and 15 or less, more preferably 5 or more and 15 or less.
  • the number (N 13c) of fibers having the change point 18 in the constituent fibers constituting the side region 13c is preferably 5 or more and 20 or less, and more preferably 10 or more and 20 or less.
  • the method for measuring the number of fibers having the change point 18 is as follows.
  • the measurement is performed at three places, and the average is the number of fibers having the change point 18 in the constituent fibers constituting the top region 13a of the sample.
  • the vicinity of the bottom point of the bottom region 13b, which is a lower part when the thickness of the nonwoven fabric is equally divided into three in the Z direction Determine by measuring.
  • the number of fibers having the change point 18 in the constituent fibers 11 constituting the side region 13c is obtained by measuring the central portion when the thickness of the nonwoven fabric is equally divided into three in the Z direction.
  • JCM-5100 (trade name) manufactured by JEOL Ltd. is used.
  • the total thickness when the non-woven fabric 1 is viewed from the side is defined as a sheet thickness T S
  • the local thickness of the non-woven fabric 1 curved in the unevenness is defined as a layer thickness T L.
  • the sheet thickness T S is preferably 0.5 mm or greater and 7 mm or less, and more preferably 1.0 mm or greater and 5 mm or less.
  • Layer thickness T L may be different at each site in the non-woven fabric 1 is preferably a layer thickness T L1 of the top region 13a is 0.1mm or more 3.0mm or less, 0.2 mm or more 2.0mm or less Is more preferable.
  • the layer thickness T L2 of the bottom region 13b is preferably 0.1 mm or greater and 3.0 mm or less, and more preferably 0.2 mm or greater and 2.0 mm or less.
  • the layer thickness T L3 of the side region 13c is preferably 0.1 mm or greater and 3.0 mm or less, and more preferably 0.2 mm or greater and 2.0 mm or less.
  • the relationship between the layer thicknesses T L1 , T L2 , and T L3 is within this range, so that the body fluid absorption speed during use is fast, the liquid return from the absorber is suppressed, and an appropriate cushioning property is realized. it can.
  • the sheet thickness T S and the layer thickness T L are measured by the following methods.
  • the sheet thickness T S is measured using a thickness measuring instrument with a load of 0.05 kPa applied to the nonwoven fabric 1.
  • a laser displacement meter manufactured by OMRON Corporation is used for the thickness measuring instrument. Thickness is measured at 10 points, and the average value is calculated as the thickness.
  • the layer thickness T L is measured by enlarging the cross section of the sheet with a Keyence digital microscope VHX-900 at about 20 times, thereby measuring the thickness of each layer.
  • the pitch between the tops of the protruding strips 13 adjacent in the Y direction is preferably 1 mm or more and 15 mm or less, and more preferably 1.5 mm or more and 10 mm or less.
  • the height H of the ridge 13 is preferably 0.5 mm or more and 5 mm or less, and more preferably 1 mm or more and 3 mm or less. The height H is measured under a no load by observing a cross section in the thickness direction Z of the nonwoven fabric 1 with a microscope.
  • the basis weight of the nonwoven fabric 1 is preferably 15 g / m 2 or more 50 g / m 2 or less the average value of the entire sheet, 20 g / m 2 or more 40 g / m 2 or less is more preferable.
  • fiber treatment agent such as fiber colorant, antistatic property agent, lubricant, hydrophilic agent may be adhered to the surface of the constituent fiber 11 of the nonwoven fabric 1 at the raw material stage.
  • various known methods can be employed without any particular limitation. For example, application by spraying, application by a slot coater, application by roll transfer, immersion in a fiber treatment agent, and the like can be mentioned. These treatments may be performed on the fibers before being made into a web, or after the fibers are made into a web by various methods. However, it is necessary to perform the process before the hot air blowing process described later.
  • the fiber having the fiber treatment agent attached to the surface is dried at a temperature sufficiently lower than the melting point of the polyethylene resin (for example, 120 ° C. or less) by, for example, a hot air blowing type dryer.
  • the topsheet 2 in the incontinence pad 10 of the present embodiment is heat-sealed with the adjacent lower sheet 6 in each of the concave strip portions 14 of the nonwoven fabric 1 constituting the topsheet 2 as shown in FIG. Are joined by. Since the nonwoven fabric 1 includes fibers having large diameter portions and small diameter portions having different fiber diameters, and is bonded to the adjacent lower sheet 6, the follower deformability with respect to the wearer's movement is excellent. .
  • the lower sheet 6 in the present embodiment is a second sheet 6 made of a nonwoven fabric and disposed between the top sheet 2 and the absorber 4.
  • the concave strip portion 14 of the surface sheet 2 is continuously joined to the second sheet 6 in the longitudinal direction of the incontinence pad 10, and the joint portion 14 s is formed continuously in the longitudinal direction X of the incontinence pad 10.
  • it may be formed intermittently in the longitudinal direction X, but the joint 14 s is intermittent in the longitudinal direction X from the viewpoint of followability with the skin and the touch. It is preferable to be formed.
  • the joint portions 14 s are formed at equal intervals in the longitudinal direction X.
  • the second sheet 6 may be joined by another joining means such as joining with an adhesive such as a hot melt adhesive. Side sheet).
  • non-woven fabrics produced by various manufacturing methods can be used.
  • an air-through non-woven fabric in which fibers are heat-bonded to each other by an air-through method on a fiber web obtained by a card method or an airlaid method a card
  • Various nonwoven fabrics such as a heat roll nonwoven fabric, a heat embossed nonwoven fabric, a spunlace nonwoven fabric, and a needle punched nonwoven fabric in which heat fusion points between fibers are formed by a heat roll method can be used on the fiber web obtained by the method.
  • the absorbent body 4 in the incontinence pad 10 of the present embodiment is formed with a compression portion 43 formed by embossing in the form of dots, whereby the absorber 4 has a bending rigidity.
  • a plurality of highly flexible regions 5 lower than the other portions are formed extending in the longitudinal direction X, respectively.
  • the absorbent body 4 is formed with a plurality of compression section rows R in the width direction Y in which the compression sections 43 are intermittently arranged in series in the longitudinal direction X at a predetermined pitch.
  • the compression portions 43 in the adjacent compression portion rows R are shifted in the longitudinal direction X by a half pitch.
  • a blade adjusted so as to descend to a position (lowermost position) 8 mm below the surface of the sample stage is lowered from above the test piece at a constant speed of 200 mm / min. Then, the maximum value (cN) indicated by the indicator (load meter) when the test piece is pressed back and forth with the blade in the length direction is read. The measurement was performed three times with different test pieces, and the average value was calculated as the bending stiffness.
  • the compression portion 43 in the present embodiment is formed by pressing between an embossing roll having a cylindrical pressing protrusion on the peripheral surface and an anvil roll having a smooth surface. In each compression portion 43, absorption is performed. The thickness of the body 4 is thinner than other parts. Further, the absorber 4 has a non-skin contact surface side surface on the embossing roll side, and the compression portion 43 has a non-skin contact surface side surface of the absorber 4 on the tip surface of the pressing protrusion. A concave portion having a plan view shape corresponding to the shape is provided.
  • column R, and the straight line L2 which connects the other ends is the highly flexible area
  • the high flexibility region 5 (5a, 5b) is easy to bend at both end positions in the width direction where the rigidity of the absorber 4 changes, that is, the position of the straight line L1 and the position of the straight line L2, respectively.
  • the region 5 includes both end positions in the width direction (the position of the straight line L1 and the position of the straight line L2).
  • region 5 may be formed only by pressurization, you may heat and form simultaneously with pressurization.
  • the number of the highly flexible regions 5 formed in the width direction Y of the absorbent body 4 is plural, preferably 5 or more, more preferably 8 or more, and still more preferably 10 or more.
  • the compressed portion 43 and the highly flexible region 5 have a length in the width direction Y of preferably 0.2 mm or more, more preferably 0.5 mm or more, and preferably 10 mm or less, more preferably 5 mm or less. is there.
  • interval L3 between the adjacent compression parts 43 becomes like this.
  • the pitch P between the central positions of the compressed portion rows R or the highly flexible regions 5 adjacent in the width direction Y of the absorbent body 4 is preferably 1 mm or more, more preferably 3 mm or more, and preferably 10 mm. Hereinafter, it is more preferably 5 mm or less.
  • region 5 Match. More specifically, a plurality of highly flexible regions 5 extending in the longitudinal direction X are formed in a plurality of rows in the width direction Y. At a plurality of locations in the width direction Y, the positions of the concave portions 14 and the highly flexible regions 5 The position overlaps along the longitudinal direction X continuously.
  • the position of the concave portion 14 determines the lower portion in the thickness direction when divided into three equal parts the sheet thickness T S of the nonwoven fabric 1, i.e. the bottom area 13c described above as concave groove portion 14.
  • the number of the concave strips 14 that overlap the highly flexible region 5 is a plurality, preferably 3 or more, more preferably 5 or more, and still more preferably 8 or more.
  • the absorbent body 4 is formed with a plurality of highly flexible regions 5 along the longitudinal direction X at intervals in the width direction Y. Coupled with the fact that the incontinence pad 10 is easy to bend along the shape of the skin surface S of the wearer as shown in FIG. It also has excellent followability with respect to changes in the shape of the skin surface S. Moreover, unlike the case where the absorbent body 4 is simply made thin and easily deformed, the absorbent body 4 is less likely to be twisted, and the skin contact surface made of the topsheet 2 is less likely to wrinkle. Difficulty is unlikely to occur.
  • the convex strip 13 of the top sheet 2 of the incontinence pad 10 is hollow inside, and in the width direction Y based on the concave strip 14 joined to the lower sheet 6 following the movement of the skin.
  • the non-woven fabric 1 forming the ridges 13 is a non-woven fabric including constituent fibers having a plurality of portions having different fiber diameters, when the ridges 13 are pressed by the skin, the small-diameter portions The stress concentrates on the ridges, and each part of the ridge 13 is also deformed flexibly.
  • the incontinence pad 10 of this embodiment is excellent in following deformability with respect to a wearer's movement, a feeling of strangeness, a touch, etc. by such an effect
  • the joint portions 14 s between the concave strip portion 14 of the topsheet 2 and the lower sheet 6 such as the second sheet are intermittently formed in the longitudinal direction X. Accordingly, in the surface sheet 2, the joining portions 14s and the non-joining portions 14t, that is, the portions that are not joined to other members in the surface sheet 2 are alternately formed in the longitudinal direction X. It is preferable that at least a part of the compression portions 43 (see FIG. 2B and the like) of the plurality of absorbent bodies 4 in the highly flexible region 5 of the body 4 be located at the same position as the non-joint portion 14t.
  • the incontinence pad 10 preferably has an overlapping portion between the non-bonded portion 14t of the topsheet 2 and the compressed portion 43 of the absorbent body 4 in a plan view as shown in FIG.
  • the highly flexible region 5 that coincides with the position of the recess 14 in the width direction Y
  • at least a part of the compressed portion 43 included in the highly flexible region 5 is the same as the non-joint portion 14t.
  • it is in position. Since the incontinence pad 10 has such an overlapping portion, for example, the highly flexible region 5 can be compared with a configuration in which most of the compression portion 43 is located at the same position as the joint portion 14s. The inherent flexibility is easily maintained, so that the incontinence pad 10 can be more reliably deformed as shown in FIG.
  • the compression part currently formed in the absorber 4 from a viewpoint of making it show more reliably the effect resulting from such duplication with the non-joining part 14t of the surface sheet 2, and the compression part 43 of the absorber 4. Occupying the total number of 43 (when the compression portions 43 are formed on both the skin contact surface and the non-skin contact surface of the absorbent body 4), the total number of the compression portions 43 formed on the respective surfaces)
  • the ratio of the number of the compression parts 43 existing in the same position as the non-joint part 14t of the topsheet 2 is preferably 50% or more, more preferably 80% or more, as (the latter / the former) ⁇ 100.
  • a particularly preferable form is a form in which such a ratio is 100%, that is, all the compressed parts 43 of the absorbent body 4 overlap with the non-joined parts 14t of the topsheet 2 (or do not overlap with the joined parts 14s).
  • the position of the concave stripe portion 14 and the position of the highly flexible region 5 coincide with each other in a plurality of places in the width direction Y in the absorbent body 4.
  • the “rubbing stimulus” in which the wearer's skin is rubbed and stimulated can be further reduced.
  • the absorber 4 which has the highly flexible area
  • the absorbent body 4 deformed by the highly flexible region 5 is restored to its original state. It is easy to follow and it is even more excellent in followability to skin movement.
  • the nonwoven fabric constituting the second sheet 6 preferably has a three-dimensional network structure in which short fibers are bonded, and is preferably an air-through nonwoven fabric, for example.
  • the basis weight of the second sheet 6 is preferably 10 g / m 2 or more and 40 g / m 2 or less, more preferably 15 g / m 2 or more and 30 g / m 2 or less.
  • the second sheet 6 and the absorbent body 4, the layer of the absorbent sheet constituting the absorbent body 4, and the absorbent body 4 and the back sheet 3 are joined with an adhesive, respectively.
  • an adhesive solid coating with a slot coater or the like may be used, but pattern coating is preferred.
  • the pattern coating application include spiral patterns, dot patterns, stripe patterns (striped patterns), lattice patterns, checkered patterns, and the like.
  • the changing point 18 from the small diameter portion 16 adjacent to the fusion portion 12 to the large diameter portion 17 is Since it arrange
  • the constituent fiber 11 is preferably made of only a high elongation fiber (heat-extensible composite fiber).
  • the nonwoven fabric 1 is a nonwoven fabric having a concavo-convex structure, and the fiber density of the wall 15 is formed to be smaller than the fiber density of the top of the ridge 13 and the fiber density of the bottom of the ridge 14. Therefore, since the interfiber distance of the wall portion 15 is wider than the interfiber distance between the top portion of the ridge portion 13 and the bottom portion of the concave portion 14, the air permeability of the nonwoven fabric 1 as a whole is improved. Moreover, since the capillary force of the top part of the protruding item
  • the non-woven fabric 1 constituting the top sheet 2 is the same non-woven fabric as the above-described non-woven fabric constituting the top sheet of the incontinence pad 10, but the concave strip portion 14 of the top sheet 2 is joined.
  • the lower sheet is the core wrap sheet 41.
  • the core wrap sheet 41 may wrap the entire absorbent core 40 with one sheet, or may wrap the entire absorbent core 40 with two or more core wrap sheets.
  • the skin contact surface side and the non-skin contact surface side of the absorbent core 40 may be covered with separate sheets.
  • the incontinence pad 10A As a core wrap sheet that covers the skin contact surface side of the absorbent core 40, a sheet having a basis weight of 10 g / m 2 or more and 30 g / m 2 or less is preferably used, and a basis weight of 15 g / m 2 or more and 20 g / m 2 is used. It is more preferable to use a sheet of m 2 or less.
  • the nonwoven fabric used as the surface sheet in the present invention includes a fusing step of forming a fiber sheet by thermally fusing the intersections of the constituent fibers of the fiber web containing high elongation fibers at the fusing portion, and the fiber sheet. It is manufactured by the manufacturing method of a nonwoven fabric provided with the extending
  • FIG. 9 schematically shows a preferable manufacturing apparatus 100 used in the method for manufacturing the nonwoven fabric 1.
  • the manufacturing apparatus 100 is suitably used for manufacturing an air-through nonwoven fabric.
  • the manufacturing apparatus 100 includes a web forming unit 200, a hot air processing unit 300, an extending unit 400, and a lower sheet joining unit 500 in this order from the upstream side to the downstream side of the manufacturing process.
  • the web forming unit 200 is provided with a web forming apparatus 201 as shown in FIG.
  • a card machine is used as the web forming apparatus 201.
  • a card machine the thing normally used in the technical field of an absorbent article can be used without a restriction
  • another web manufacturing apparatus such as an airlaid apparatus, can be used instead of the card machine.
  • the hot air processing unit 300 includes a hood 301 as shown in FIG. Inside the hood 301, hot air can be blown by an air-through method.
  • the hot air processing unit 300 includes an endless conveyor belt 302 made of a breathable net.
  • the conveyor belt 302 circulates in the hood 301.
  • the conveyor belt 302 is made of a resin such as polyethylene terephthalate or a metal.
  • the temperature of the hot air blown in the hood 301 and the heat treatment time are preferably adjusted so that the intersections of the high elongation fibers included in the constituent fibers 11 of the fiber web 1b are heat-sealed. More specifically, the temperature of the hot air is preferably adjusted to a temperature higher by 0 ° C. to 30 ° C. than the melting point of the resin having the lowest melting point among the constituent fibers 11 of the fiber web 1b.
  • the heat treatment time is preferably adjusted to 1 to 5 seconds depending on the temperature of the hot air. Further, from the viewpoint of encouraging further entanglement between the constituent fibers 11, the wind speed of the hot air is preferably about 0.3 m / sec to 1.5 m / sec. Further, the conveying speed is preferably about 5 m / min to 100 m / min.
  • the stretching unit 400 includes a pair of concave and convex rolls 401 and 402 that can be engaged with each other.
  • the pair of concave and convex rolls 401 and 402 are formed so as to be heatable, and are formed by alternately arranging large-diameter convex portions 403 and 404 and small-diameter concave portions (not shown) in the roll axis direction.
  • the uneven rolls 401 and 402 may or may not be heated, but the heating temperature when heating the uneven rolls 401 and 402 makes it easy to stretch the high elongation fibers included in the constituent fibers 11 of the fiber sheet 1a described later.
  • the temperature is 10 ° C. higher than the glass transition point of the fiber and 10 ° C. lower than the melting point, more preferably 20 ° C. higher than the glass transition point of the fiber, and 20 ° C. lower than the melting point. is there.
  • the temperature is preferably 67 ° C. or higher and 135 ° C. or lower, more preferably 77 ° C. or higher and 125 ° C. or lower, more preferably 87 ° C. or higher and 115 ° C. or lower.
  • the interval (pitch) between the large-diameter convex portions 403, 403 adjacent to each other in the roll axis direction of the uneven roll 401 and the roll axis direction of the uneven roll 402 are adjacent to each other.
  • the spacing (pitch) between the large-diameter convex portions 404 and 404 is the same spacing (pitch) w, and the spacing (pitch) w is such that the high elongation fibers included in the constituent fibers 11 of the fiber sheet 1a are successfully used in the stretching apparatus.
  • the pushing amount t of the pair of concave and convex rolls 401 and 402 (the distance between the vertex of the large-diameter convex portion 403 and the vertex of the large-diameter convex portion 404 adjacent to each other in the roll axis direction) is The thickness is preferably 1 mm or more and 3 mm or less, and particularly preferably 1.2 mm or more and 2.5 mm or less.
  • the mechanical stretch ratio is preferably 1.5 times or more and 3.0 times or less, and particularly preferably 1.7 times or more and 2.8 times or less.
  • the lower sheet bonding portion 500 includes a concavo-convex roll 402 and a flat roll 501 having a smooth surface, and has a concavo-convex shape between the large-diameter convex portion 404 of the concavo-convex roll 402 and the peripheral surface of the flat roll 501.
  • the nonwoven fabric 1 and the lower sheet are joined by heating and pressing.
  • the manufacturing method of the nonwoven fabric 1 using the manufacturing apparatus 100 which has the above structure is demonstrated.
  • the web forming part 200 the short fiber-shaped constituent fibers 11 having high elongation fibers are used as raw materials, and the fiber web 1b is formed by the web forming apparatus 201 which is a card machine ( Web forming step).
  • the fiber web 1b manufactured by the web forming apparatus 201 is in a state where its constituent fibers 11 are loosely entangled with each other, and has not yet achieved shape retention as a sheet.
  • the fiber sheet 1a is formed by thermally fusing the intersections of the constituent fibers 11 of the fiber web 1b including the high elongation fibers at the fusion part 12 (fusing step). Specifically, the fiber web 1b is conveyed onto the conveyor belt 302, and hot air is blown by an air-through method while passing through the hood 301 by the hot air processing unit 300. When hot air is thus blown by the air-through method, the constituent fibers 11 of the fiber web 1b are further entangled with each other, and at the same time, the intersection of the entangled fibers is thermally fused (see FIG. 11 (a)). A fiber sheet 1a having shape retention is produced.
  • the fused fiber sheet 1a is stretched in one direction (stretching step). Specifically, the fused fiber sheet 1a having a shape-retaining property as a sheet is conveyed between a pair of concave and convex rolls 401 and 402, as shown in FIGS. 11 (a) to 11 (c). In addition, the fiber sheet 1a is stretched, and a large fiber diameter is sandwiched between two small-diameter portions 16 and 16 having a small fiber diameter in one constituent fiber 11 between adjacent fusion portions 12 and 12. The large diameter portion 17 is formed, and the change point 18 from the small diameter portion 16 to the large diameter portion 17 is set to 1/3 of the interval T between the fusion portions 12 and 12 adjacent to the fusion portion 12. Form within the range.
  • the fiber sheet 1a in which the intersections of the constituent fibers 11 are thermally fused at the fusion part 12 is conveyed between a pair of concave and convex rolls 401 and 402. Then, the fiber sheet 1a is stretched in the orthogonal direction (CD, roll axis direction) orthogonal to the machine direction (MD, flow direction).
  • CD orthogonal direction
  • MD machine direction
  • the adjacent fused portions 12 and 12 fixing the constituent fibers 11 shown in FIG. Is actively stretched in the orthogonal direction (CD, roll axis direction).
  • CD orthogonal direction
  • MD machine direction
  • the nonwoven fabric 1 provided with the constituent fiber 11 shown in FIG. 5 can be manufactured continuously and efficiently. Moreover, the manufactured nonwoven fabric 1 is conveyed by the uneven
  • the sheet joining portion is supplied with the strip-shaped nonwoven fabric 6 for the second sheet unwound from the roll-shaped roll 6 ′, and the uneven nonwoven fabric 1 is in a state of being overlapped with the strip-shaped nonwoven fabric 6. Introduced between the uneven roll 402 and the flat roll 501.
  • the concave strip portion of the concave-convex nonwoven fabric 1 and the strip-shaped nonwoven fabric 6 are between the large-diameter convex portion 403 of the concave-convex roll 402 and the peripheral surface of the flat roll 501.
  • a band-shaped composite sheet 8 is obtained in which the topsheet 2 made of the nonwoven fabric 1 is joined to the lower sheet 6 at the concave strip portion 14.
  • the belt-shaped composite sheet 8 is introduced into the incontinence pad 10 manufacturing line after being wound up, or is introduced into the incontinence pad 10 manufacturing line without being wound up.
  • the absorbent body 4 in which the compression portion 43 is formed by embossing between the belt-shaped composite sheet 8 and the belt-shaped back sheet 3 is formed in the highly flexible region formed by the compression portion 43. After arranging the position and the position of the concave portion of the surface sheet 2 to coincide, it is obtained by cutting into the shape of each article.
  • the absorbent article of this invention is not restrict
  • the highly flexible region of the absorbent body 4 can also be formed by forming the compression portion 43 in the absorbent body 4 with the patterns shown in FIGS. 12 (a) to 12 (c).
  • the compression portion 43 has a length in the longitudinal direction X of the incontinence pad 10 longer than the interval L ⁇ b> 3 between the adjacent compression portions 43.
  • the compression portion 43 is formed continuously in the longitudinal direction X of the incontinence pad 10.
  • FIG. 12A the compression portion 43 has a length in the longitudinal direction X of the incontinence pad 10 longer than the interval L ⁇ b> 3 between the adjacent compression portions 43.
  • the compression portion 43 is formed continuously in the longitudinal direction X of the incontinence pad 10.
  • the shape of the compression portion 43 is the same dot shape as that of the present embodiment described above, but the compression portions 43 in the adjacent compression portion row R (highly flexible region 5) are arranged in the longitudinal direction X. Are in the same position.
  • the absorbent article of the present invention may be a sanitary napkin or a panty liner instead of the incontinence pad.
  • the second sheet 6 made of a nonwoven fabric may have the same or shorter length in one or both of the longitudinal direction X and the width direction Y of the absorbent article.
  • the absorbent article may not have a leak-proof cuff.
  • the absorbent body in the present invention may be composed of an absorbent sheet 42 like the absorbent body 4 shown in FIG.
  • the absorbent body 4 shown in FIG. 13 is composed of a laminate in which an absorbent sheet 42 is laminated in two or more layers.
  • the laminate of two or more layers may be a laminate obtained by folding a single absorbent sheet and bonding the layers between them, or by laminating multiple sheets of absorbent sheets. Things can be used.
  • As the absorbent sheet an absorbent sheet containing a fiber material and a water-absorbing polymer is preferably used.
  • the constituent fibers and the constituent fibers and the water-absorbing polymer are bonded to each other through an adhesive force generated in the water-absorbing polymer in a wet state or a binder such as an adhesive or an adhesive fiber added separately.
  • a sheet or the like can be preferably used.
  • an absorbent sheet an absorbent sheet manufactured by the method described in JP-A-8-246395, a pulverized pulp supplied in an air stream and a water-absorbing polymer are deposited, and then an adhesive (for example, vinyl acetate) is deposited.
  • An absorbent sheet obtained by blending a highly water-absorbing polymer during the process can also be used.
  • These absorbent sheets can also be used as an absorber having a single layer structure without being laminated in two or more layers. In addition, the layers between the layers may not be bonded.
  • a liquid permeable top sheet that forms a skin contact surface, a back sheet and an absorbent article interposed between both sheets, and an absorbent article having a longitudinal direction and a width direction
  • the top sheet is composed of a nonwoven fabric having a concavo-convex structure in which strip-like ridges and recesses extending in the longitudinal direction are alternately arranged in the width direction, and is joined to the adjacent lower sheet in the recesses,
  • the protruding line portion has a hollow structure between the lower sheet
  • the non-woven fabric includes fibers having a large diameter portion and a small diameter portion having different fiber diameters
  • the absorbent article is an absorbent article having a plurality of highly flexible regions whose bending rigidity is lower than that of other portions at a plurality of locations in the width direction.
  • ⁇ 2> The absorbent article according to ⁇ 1>, wherein a position of the concave stripe portion and a position of the highly flexible region coincide with each other at a plurality of locations in the width direction.
  • the highly flexible regions extending in the longitudinal direction are formed in a plurality of rows in the width direction, and at a plurality of locations in the width direction, the position of the concave stripe portion and the position of the highly flexible region are The absorbent article according to ⁇ 2>, which is continuously overlapped along the longitudinal direction.
  • ⁇ 4> The absorbent article according to any one of ⁇ 1> to ⁇ 3>, wherein the highly flexible region is formed by compression of the absorbent body.
  • ⁇ 5> The absorbent article according to ⁇ 4>, wherein a plurality of the compression portions of the absorbent body are formed in series in the longitudinal direction in the highly flexible region.
  • ⁇ 6> In the absorbent body, as the highly flexible region, a plurality of compression portion rows in which compression portions are intermittently arranged in series in the longitudinal direction are formed in the width direction, and compression in adjacent compression portion rows is performed.
  • ⁇ 7> In the absorbent body, as the highly flexible region, a plurality of compression portion rows in which compression portions are intermittently arranged in series in the longitudinal direction are formed in the width direction, and compression in adjacent compression portion rows is performed.
  • the number of the highly flexible regions formed in the width direction of the absorber is a plurality, preferably 5 or more, more preferably 8 or more, and even more preferably 10 or more, ⁇ 1
  • the highly flexible region has a length in the width direction of preferably 0.2 mm or more, more preferably 0.5 mm or more, and preferably 10 mm or less, more preferably 5 mm or less.
  • the compression part for forming the highly flexible region is intermittently formed in the longitudinal direction, and the interval between the compression parts adjacent in the longitudinal direction is preferably 2 mm or more, more preferably 5 mm or more,
  • the pitch between the central positions of the highly flexible regions adjacent in the width direction of the absorbent body is preferably 1 mm or more, more preferably 3 mm or more, and preferably 10 mm or less, more preferably 5 mm or less.
  • ⁇ 14> ⁇ 1> to ⁇ 13, wherein the number of the concave portions overlapping the highly flexible region is a plurality, preferably 3 or more, more preferably 5 or more, and still more preferably 8 or more. > Any one of>.
  • the thickness of the absorber is preferably 1 mm or more, more preferably 2 mm or more, and preferably 15 mm or less, more preferably 10 mm or less, preferably 1 mm or more and 15 mm or less, more preferably 2 mm or more and 10 mm or less.
  • ⁇ 17> The absorbent article according to any one of ⁇ 1> to ⁇ 16>, wherein the constituent fibers of the nonwoven fabric include high elongation fibers.
  • the high elongation fiber is a core-sheath type composite fiber having heat-fusibility.
  • ⁇ 20> The absorption according to any one of ⁇ 17> to ⁇ 19>, wherein a ratio of the high elongation fiber in the nonwoven fabric is 50% by mass or more and 100% by mass or less, preferably 80% by mass or more and 100% by mass or less. Sex goods. ⁇ 21>
  • the elongation of the high elongation fiber is preferably 100% or more and 800% or less at the raw material stage, more preferably 200% or more and 500% or less, and further preferably 250% or more and 400% or less.
  • the constituent fiber of the non-woven fabric has a large-diameter portion with a large fiber diameter sandwiched between two small-diameter portions with a small fiber diameter between adjacent fused portions when focusing on one constituent fiber.
  • the constituent fibers of the nonwoven fabric are provided with 1 to 5 large diameter portions, preferably 1 to 3 or less, between adjacent fused portions when focusing on one constituent fiber.
  • the ratio (L 16 / L 17 ) of the fiber diameter (diameter L 16 ) of the small diameter portion to the fiber diameter (diameter L 17 ) of the large diameter portion is preferably 0.5 or more and 0.8 or less, more preferably 0.
  • the fiber diameter (diameter L 16 ) of the small diameter portion is preferably 5 ⁇ m to 28 ⁇ m, more preferably 6.5 ⁇ m to 20 ⁇ m, and particularly preferably 7.5 ⁇ m to 16 ⁇ m, ⁇ 22> to ⁇ 25>
  • the fiber diameter (diameter L 17 ) of the large diameter portion is preferably 10 ⁇ m or more and 35 ⁇ m or less, more preferably 13 ⁇ m or more and 25 ⁇ m or less, and particularly preferably 15 ⁇ m or more and 20 ⁇ m or less, any one of the above items ⁇ 22> to ⁇ 26> 2.
  • the change point from the small diameter portion adjacent to the fusion portion to the large diameter portion is the interval between the fusion portions adjacent to the fusion portion.
  • ⁇ 29> The nonwoven fabric according to any one of the above ⁇ 1> to ⁇ 28>, which is composed of a top region, a bottom region, and a side region located therebetween when viewed in cross section along the thickness direction.
  • Absorbent articles. ⁇ 30> The absorbent article according to ⁇ 29>, wherein the fiber density of the side region is lower than the fiber density of the top region and the fiber density of the bottom region.
  • ⁇ 31> The absorbent article according to ⁇ 29>, wherein the nonwoven fabric is formed with the smallest fiber density in the side region.
  • the ratio (D 13c / D 13a , D 13c / D 13a ) of the fiber density (D 13c ) in the side area to the fiber density (D 13a ) in the top area or the fiber density (D 13b ) in the bottom area ) Is preferably 0.15 or more and 0.9 or less, more preferably 0.2 or more and 0.8 or less, the absorbent article according to any one of the above items ⁇ 29> to ⁇ 31>.
  • Fiber density at the top zone (D 13a) is preferably 90 present / mm 2 or more 200 present / mm 2 or less, 180 lines / mm 2 or less and more preferably 100 / mm 2 or more, the ⁇ 29>
  • Fiber density at the bottom area (D 13b) is preferably 80 present / mm 2 or more 200 present / mm 2 or less, more preferably 90 present / mm 2 or more 180 lines / mm 2 or less, the ⁇ 29>
  • Fiber density of the side region (D 13c) is preferably 30 lines / mm 2 or more eighty / mm 2 or less, more preferably 40 present / mm 2 or more 70 yarns / mm 2 or less, the ⁇ 29>.
  • the non-woven fabric includes a fusion part formed by heat-sealing intersections between constituent fibers,
  • the number of fibers having a change point from the small diameter part adjacent to the fusion part to the large diameter part in the constituent fiber constituting the side region has the change point in the constituent fiber constituting the top region.
  • the non-woven fabric includes a fusion part formed by heat-sealing intersections between constituent fibers,
  • the number (N 13a ) of fibers having a change point in the constituent fibers constituting the top region is preferably 1 or more and 15 or less, more preferably The absorbent article according to any one of ⁇ 29> to ⁇ 37>, wherein is 5 or more and 15 or less.
  • the number (N 13b ) of fibers having a change point in the constituent fibers constituting the bottom region is preferably 1 or more and 15 or less, more preferably The absorbent article according to any one of ⁇ 29> to ⁇ 38>, wherein is 5 or more and 15 or less.
  • the number (N 13c ) of fibers having a change point in the constituent fibers constituting the side region is preferably 5 or more and 20 or less, and further The absorbent article according to any one of the above items ⁇ 29> to ⁇ 39>, preferably 10 or more and 20 or less.
  • ⁇ 41> The absorbent article according to any one of ⁇ 1> to ⁇ 40>, wherein the sheet thickness of the nonwoven fabric is 0.5 mm or more and 7 mm or less, preferably 1.0 mm or more and 5 mm or less.
  • ⁇ 42> The absorbent article according to any one of ⁇ 1> to ⁇ 41>, wherein the layer thickness of the top region is 0.1 mm to 3.0 mm, preferably 0.2 mm to 2.0 mm.
  • ⁇ 43> The absorbent article according to any one of ⁇ 1> to ⁇ 42>, wherein the layer thickness of the bottom region is 0.1 mm to 3.0 mm, preferably 0.2 mm to 2.0 mm.
  • ⁇ 44> The absorptivity according to any one of ⁇ 1> to ⁇ 43>, wherein the layer thickness of the side region is 0.1 mm to 3.0 mm, preferably 0.2 mm to 2.0 mm. Goods.
  • ⁇ 45> ⁇ 1> to ⁇ 44> according to any one of the above items ⁇ 1> to ⁇ 44>, wherein a pitch between the top portions of the ridges adjacent to each other in the width direction is 1 mm or more and 15 mm or less, preferably 1.5 mm or more and 10 mm or less.
  • Absorbent article. ⁇ 46> The basis weight of the nonwoven fabric is a 15 g / m 2 or more 50 g / m 2 or less the average value of the entire sheet, preferably is 20 g / m 2 or more 40 g / m 2 or less, wherein ⁇ 1> to the ⁇ 45> The absorbent article of any one.
  • ⁇ 47> The absorption according to any one of ⁇ 1> to ⁇ 46>, wherein a joint between the concave portion of the top sheet and the lower sheet is intermittently formed in the longitudinal direction of the absorbent article. Sex goods. ⁇ 48> By joining the concave portion of the top sheet and the lower sheet intermittently in the longitudinal direction, the joint and non-joining portions are alternately arranged in the longitudinal direction on the top sheet. A plurality of compression portions of the absorbent body are formed in series in the longitudinal direction in the highly flexible region, The absorbent article according to ⁇ 47>, wherein at least a part of the compressed parts of the plurality of absorbent bodies in the highly flexible region is located at the same position as the non-joined part.
  • ⁇ 49> The absorption according to any one of ⁇ 1> to ⁇ 48>, wherein a second sheet made of a nonwoven fabric is disposed between the top sheet and the absorbent body, and the second sheet is the lower sheet. Sex goods.
  • ⁇ 50> The absorbent sheet according to ⁇ 49>, wherein the second sheet is shorter in length in the longitudinal direction and in the width direction than the top sheet.
  • ⁇ 51> The absorbent article according to ⁇ 49> or ⁇ 50>, wherein the non-woven fabric constituting the second sheet has a three-dimensional network structure in which short fibers are bonded.
  • ⁇ 52> The absorptivity according to ⁇ 49> to ⁇ 51>, wherein the basis weight of the second sheet is 10 g / m 2 or more and 40 g / m 2 or less, preferably 15 g / m 2 or more and 30 g / m 2 or less.
  • ⁇ 53> The absorbent body according to any one of ⁇ 1> to ⁇ 48>, wherein the absorbent body has an absorbent core and a core wrap sheet that wraps the absorbent core, and the core wrap sheet is the lower sheet. Absorbent article.
  • the basis weight of the core wrap sheets is at 10 g / m 2 or more 30 g / m 2 or less, preferably is 2 under 15 g / m 2 or more 20 g / m, the absorbent article according to ⁇ 53>.
  • the absorbent article of the present invention is excellent in follow-up deformability with respect to the wearer's movement, incongruity, and touch.

Abstract

L'invention concerne un article absorbant équipé d'une feuille de surface perméable aux liquides (2) qui constitue la surface qui vient en contact avec la peau, une feuille de surface arrière (3), et un corps absorbant (4) interposé entre les deux feuilles. L'article absorbant a une direction de longueur (X) et une direction de largeur (Y), et la feuille de surface (2) est fabriquée à partir d'un tissu non tissé (1) qui a des nervures en saillie (13) et des rainures en creux (14) qui s'étendent dans la direction de la longueur et sont positionnées en alternance dans le sens de la largeur (Y). Les rainures en creux (14) sont jointes à la feuille inférieure adjacente (6), et des structures creuses sont formées entre les nervures en saillie (13) et la feuille inférieure (6). Le tissu non tissé (1) contient des fibres ayant une partie à grand diamètre (17) et une partie à petit diamètre (16) ayant des diamètres de fibres qui diffèrent les uns des autres, et le corps absorbant (4) a des régions hautement flexibles (5) ayant une rigidité à la flexion inférieure à d'autres parties, dans une pluralité d'emplacements dans le sens de la largeur.
PCT/JP2015/079235 2014-10-17 2015-10-15 Article absorbant WO2016060219A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201580054221.XA CN106794082B (zh) 2014-10-17 2015-10-15 吸收性物品

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014-212402 2014-10-17
JP2014212402 2014-10-17
JP2015203671A JP6108417B2 (ja) 2014-10-17 2015-10-15 吸収性物品
JP2015-203671 2015-10-15

Publications (1)

Publication Number Publication Date
WO2016060219A1 true WO2016060219A1 (fr) 2016-04-21

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Application Number Title Priority Date Filing Date
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Country Link
WO (1) WO2016060219A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002306533A (ja) * 2001-04-18 2002-10-22 Daio Paper Corp 吸収性物品
JP2006055352A (ja) * 2004-08-19 2006-03-02 Kao Corp 吸収性物品
JP2010005925A (ja) * 2008-06-26 2010-01-14 Kao Corp 伸縮シート
JP2012239721A (ja) * 2011-05-20 2012-12-10 Kao Corp 吸収性物品
JP2014068955A (ja) * 2012-09-30 2014-04-21 Uni Charm Corp 吸収性物品
JP2015112187A (ja) * 2013-12-10 2015-06-22 花王株式会社 吸収性物品

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002306533A (ja) * 2001-04-18 2002-10-22 Daio Paper Corp 吸収性物品
JP2006055352A (ja) * 2004-08-19 2006-03-02 Kao Corp 吸収性物品
JP2010005925A (ja) * 2008-06-26 2010-01-14 Kao Corp 伸縮シート
JP2012239721A (ja) * 2011-05-20 2012-12-10 Kao Corp 吸収性物品
JP2014068955A (ja) * 2012-09-30 2014-04-21 Uni Charm Corp 吸収性物品
JP2015112187A (ja) * 2013-12-10 2015-06-22 花王株式会社 吸収性物品

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