WO2019022057A1 - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
WO2019022057A1
WO2019022057A1 PCT/JP2018/027638 JP2018027638W WO2019022057A1 WO 2019022057 A1 WO2019022057 A1 WO 2019022057A1 JP 2018027638 W JP2018027638 W JP 2018027638W WO 2019022057 A1 WO2019022057 A1 WO 2019022057A1
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WO
WIPO (PCT)
Prior art keywords
loop portion
end side
free end
skin
proximal end
Prior art date
Application number
PCT/JP2018/027638
Other languages
French (fr)
Japanese (ja)
Inventor
幾哉 渡辺
Original Assignee
大王製紙株式会社
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Filing date
Publication date
Application filed by 大王製紙株式会社 filed Critical 大王製紙株式会社
Publication of WO2019022057A1 publication Critical patent/WO2019022057A1/en

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

Definitions

  • the present invention is an absorbent article mainly used for sanitary napkins, cushion sheets, incontinence pads, toiletries, etc. Specifically, the cross section along the longitudinal direction is on both sides on the skin contact surface side.
  • the present invention relates to an absorbent article in which a hollow looped solid gather is formed.
  • the absorbent article is made of cotton-like pulp or the like between a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric and a liquid-permeable surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet. It is known to form a pair of left and right three-dimensional gathers projecting to the skin side by means of a gather non-woven fabric disposed along the longitudinal direction on both sides of the skin contact surface side while interposing an absorber.
  • the above-mentioned three-dimensional gathers are formed in various forms in order to prevent leakage.
  • the standing height on the skin side there is one that is formed by being folded in two or three in a Z-shaped or ⁇ -shaped cross section.
  • the three-dimensional gather tends to fall down at the time of wearing, and the body fluid is likely to leak from the fallen part, and the fallen gather part causes discomfort.
  • Patent Documents 1 and 2, etc. below For the purpose of reducing the discomfort when worn and providing cushioning properties, etc., those in which the cross section of the three-dimensional gather is formed in a hollow loop shape have also been developed (Patent Documents 1 and 2, etc. below).
  • the height can not be increased, so the adhesion with the skin surface is reduced and a leak is likely to occur.
  • loop-shaped three-dimensional gathers have a smaller contact area with the skin surface than in the case of two-fold or three-fold in which the skin contact surface is formed in a flat shape, and also in this structure there were.
  • the main object of the present invention is to provide an absorbent article in which leakage of body fluid is prevented without impairing the wearing feeling and cushioning feeling of a solid gather in an absorbent article provided with a loop-shaped solid gather having a hollow cross section. It is.
  • absorption which the solid gathers projected on the skin side along with a longitudinal direction was formed in the both sides of the skin contact side of a liquid-permeable surface sheet, respectively.
  • the solid gathers are joined to the skin contact surface of the liquid-permeable surface sheet, and are joined to the proximal end loop portion formed in a hollow loop shape in cross section and the proximal end loop portion, and the cross section is hollow And a free end side loop portion formed in the form of a loop.
  • the proximal end loop portion is the free end side loop portion
  • the three-dimensional gather can be made to have a height, so that the leakage of the body fluid can be prevented without impairing the wearing feeling and the cushioning feeling peculiar to the loop-like three-dimensional gather.
  • the absorbent article according to the first aspect wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the thickness direction of the absorbent article.
  • the invention according to claim 2 is a first embodiment of the solid gather, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the thickness direction of the absorbent article. is there.
  • the free end side loop portion mainly constitutes the contact surface with the skin. For this reason, the protrusion height to the skin side of a solid gather can be made high, and the fit nature to a wearer's buttocks can be improved.
  • the absorbent article according to the first aspect wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the width direction of the absorbent article.
  • the invention according to claim 3 is a second embodiment of the solid gather, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the width direction of the absorbent article. is there.
  • the free end side loop portion and the proximal end side loop portion both constitute a contact surface with the skin. Therefore, the body fluid is blocked by the two-stage loop solid gathers connected in the width direction, and the side leakage can be reliably prevented.
  • the free end side loop portion is joined to the proximal end side loop portion without being joined to the liquid-permeable surface sheet, the movable range to the skin side becomes large, so that the skin surface can be surely fitted. become.
  • a neckline portion where the outline of the center side of the absorbent article of the solid gather or the outline of the skin side is narrow.
  • the outline portion on the center side of the absorbent article or the outline portion on the skin side of the solid gather is narrowed Because it is formed, this constricted portion acts as a pocket into which body fluid such as lumpy lumpy menstrual blood that has flowed from the center side in the width direction enters, thereby blocking the flow of body fluid outside the solid gather Side leakage can be prevented more reliably.
  • the absorbent article center side of the solid gather is In the solid gather in which the narrow part where the outline of the line was narrowed is formed, and the proximal end side loop part and the free end side loop part according to the second embodiment are arranged adjacent to each other in the width direction of the absorbent article
  • the neck portion is formed in which the outline of the skin side of the solid gather is bound.
  • the absorbent article according to any one of the first to fourth aspects, wherein the proximal end loop portion and the free end side loop portion are respectively composed of separate non-woven fabrics. .
  • the bonding position of the free end side loop portion with respect to the proximal end loop portion is arbitrary.
  • different functions can be added to the proximal end loop portion and the free end side loop portion by using non-woven fabrics having different properties.
  • the present invention according to claim 6 provides the absorbent article according to any one of claims 1 to 4, wherein the proximal end loop portion and the free end side loop portion are each formed of a single non-woven fabric.
  • the proximal end side loop portion and the free end side loop portion with a single non-woven fabric, the number of parts can be reduced, and the manufacturing cost can be suppressed. It becomes easy to form the free end side loop part adjacent to the side loop part.
  • an absorbent article provided with a loop-shaped solid gather having a hollow cross section, it is possible to prevent the leakage of body fluid without impairing the fit and cushion of the solid gather.
  • FIG. 2 is an enlarged cross-sectional view of a solid gather 10; It is a cross-sectional view (transverse view of the position corresponding to the II-II line of FIG. 1) of the sanitary napkin 1 which concerns on the example of a 2nd form. It is a cross-sectional view (transverse view of the position corresponding to the II-II line of FIG. 1) of the sanitary napkin 1 which concerns on the example of a 3rd form. It is an expanded sectional view of the state where three-dimensional gathers 10B concerning a 3rd example of a form were folded.
  • the sanitary napkin 1 is a liquid-impervious back sheet 2 made of a polyethylene sheet or the like, menstrual blood or a sod (hereinafter collectively referred to as body fluid). And an absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3 and long side portions on the skin contact surface side.
  • the absorbent body 4 is surrounded by the wrapper sheet 5 made of crepe paper or non-woven fabric for the purpose of shape retention and diffusion improvement of the absorbent body 4. It is not necessary to provide it. Further, although not shown, a second sheet made of a hydrophilic non-woven material having substantially the same shape as the liquid permeable surface sheet 3 may be disposed adjacent to the non-skin side of the liquid permeable surface sheet 3. .
  • a sheet material having at least a water barrier such as polyethylene is used, but it is preferable to use a material having moisture permeability from the viewpoint of preventing the stuffing.
  • a microporous obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and stretching in a uniaxial or biaxial direction A sheet is preferably used.
  • liquid-impervious backsheet 2 On the non-skin side (outside surface) of the liquid-impervious backsheet 2, one or more adhesive layers (not shown) are formed along the longitudinal direction of the napkin, and the sanitary napkin 1 is It is fixed to underwear.
  • a polylaminated non-woven fabric in which a plastic film and non-woven fabric are laminated may be used.
  • a porous or non-porous non-woven fabric, a porous plastic sheet or the like is suitably used as the liquid-permeable surface sheet 3.
  • the material fibers constituting the non-woven fabric may be synthetic fibers of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc., regenerated fibers such as rayon or cupra, natural fibers such as cotton, etc.
  • a nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a meltblown method, a needle punch method can be used.
  • the spun lace method is excellent in flexibility and drapability
  • the thermal bonding method is excellent in bulkiness and high compression recovery.
  • the non-woven fibers may be either long fibers or short fibers, but preferably short fibers are used to give a towel texture.
  • an olefin-based fiber such as polyethylene or polypropylene having a relatively low melting point.
  • a core-sheath fiber, a side-by-side fiber, or a split fiber composite fiber in which a fiber having a high melting point is used as a core and a fiber having a low melting point is sheathed can be suitably used.
  • the absorbent 4 interposed between the liquid-impervious backsheet 2 and the liquid-permeable topsheet 3 is made of, for example, cotton-like pulp and a water-absorbent polymer.
  • the water-absorbing polymer is mixed, for example, as granular powder in the pulp constituting the absorbent.
  • the pulp include cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate, and softwood pulp having a longer fiber length than hardwood pulp functions and It is suitably used in terms of price.
  • the basis weight of the absorber 4 is 250 to 650 g / m 2 , preferably 300 to 400 g / m 2 .
  • synthetic fibers may be mixed in the absorber 4.
  • the synthetic fibers include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, copolymers of these, and the like. It may be a mixture.
  • composite fibers such as core-sheath fibers, side-by-side fibers, split fibers, etc., in which fibers having a high melting point are cored and fibers having a low melting point are sheathed may be used.
  • a hydrophobic fiber it is desirable to use the synthetic fiber surface-treated with a hydrophilizing agent so as to have an affinity for body fluid.
  • the mid-high section 6 of the absorber thickened on the skin side on the skin side of the absorber 4.
  • the absorber 4 and the middle and high portion 6 may be separately manufactured and then laminated in an assembly process, or may be integrally formed by stacking the absorbers in three dimensions.
  • a two-tiered fiber structure may be used in which the middle and high portions 6 are stacked in the upper stage of the absorber 4.
  • the middle and high portion 6 is adjacent to the skin side surface of the absorber 4 and is disposed at the center in the width direction of the absorber 4 and has a smaller width dimension and longitudinal dimension than the absorber 4.
  • the thickness of the middle and high portion 6 is 3 to 25 mm, preferably 5 to 18 mm because the rigidity increases and the adhesion to the body decreases when the thickness is too large, and the adhesion to the body fluid discharge portion H decreases when the thickness is too thin. That's good.
  • the total basis weight of the middle high portion 6 and the absorber 4 in the portion where the middle high portion 6 is disposed is preferably 400 to 900 g / m 2 , and more preferably 600 to 800 g / m 2 .
  • the middle and high portion 6 is formed in a region including the body fluid discharge portion H of the wearer, specifically, a slightly longer region on the front side and the rear side than the body fluid discharge portion H.
  • the middle high portion 6 is formed longitudinally long in the longitudinal direction of the napkin, and both side edges thereof are formed in a straight line extending in the longitudinal direction of the napkin.
  • the middle and high portion 6 contains at least a pulp fiber and a synthetic fiber, and the pulp fiber: synthetic fiber ratio is mixed at 80 to 20:20 to 80, preferably 40 to 60:60 to 40 in weight conversion. Is desirable.
  • the middle and high portion 6 can contain a water absorbing polymer.
  • the water-absorbing polymer include crosslinked polyacrylates, self-crosslinked polyacrylates, saponified acrylic acid ester-vinyl acetate copolymer crosslinked products, crosslinked isobutylene / maleic anhydride copolymers, polysulfone Examples thereof include acid salt cross-linked products and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide.
  • the water absorbing polymer having the water absorbing performance can adjust the water absorbing power and the water absorbing speed by adjusting the crosslink density and the crosslink density gradient in the production process.
  • the compounding amount is 1 to 10 in weight conversion with respect to the total weight of the pulp fiber and the synthetic fiber, since the so-called gel blocking phenomenon occurs when the compounding amount is increased because the middle and high portions 6 need to promote permeation to the absorber 4 side. It is desirable to blend in the ratio of%. When the water-absorbent polymer content exceeds 50%, the entanglement between the pulp fibers is lost, the sheet strength is reduced, and tears and cracks are easily generated, which is not desirable.
  • liquid permeable top sheet 3 is squeezed from the skin contact surface side of the liquid permeable top sheet 3 along the longitudinal direction of the sanitary napkin 1 at least on both sides of the region corresponding to the body fluid discharge portion H.
  • the embossed grooves 9 integrally recessed to the absorber 4 can be formed in any pattern.
  • the width dimension of the liquid-permeable top sheet 3 is slightly longer than the width of the absorber 4 as shown in the cross-sectional views of FIG. 2 and FIG. Stop the side non-woven fabric 7, 8 outside specifically laminated on two layers different from the liquid-permeable surface sheet 3 outside, to prevent permeation of menstrual blood and cages, etc., or Side nonwoven fabrics 7 and 8 configured using nonwoven fabric materials that have been subjected to appropriate water repelling treatment or hydrophilic treatment are disposed according to the purpose of enhancing the feeling of touch and the like.
  • materials formed by an appropriate processing method can be used using natural fibers, synthetic fibers or regenerated fibers as a material, but preferably, while removing a feeling of gois and removing mure.
  • a non-woven fabric which has a low basis weight and is made breathable.
  • a non-woven fabric manufactured at a basis weight of 13 to 23 g / m 2 and in order to reliably prevent the permeation of body fluid, a silicone based, paraffin based, alkylchromic chloride based water repellent, etc.
  • a water repellent treated nonwoven fabric coated with is preferably used.
  • the side non-woven fabrics 7 and 8 are hot melt or the like in the range from the predetermined inner position to the outer edge of the liquid-impervious back sheet 2 outside the widthwise middle portion
  • the flaps are formed on both sides of the absorbent body 4 by the laminated sheet portions of the side non-woven fabrics 7 and 8 and the liquid-impervious back sheet 2.
  • the flaps form a pair of left and right wing-shaped flaps W, W at absorber side positions substantially corresponding to the body fluid discharge portion H, and hip-hold flaps W B , W at positions from the buttocks side (rear side) B may be formed.
  • An adhesive layer (not shown) is provided on the outer surface side of each of the wing-shaped flaps W and W and the hip-hold flaps W B and W B , and the wing-shaped flaps W and W are proximally attached when attached to shorts. folded on the opposite side at the folding line RL position of parts, as well as fastened is wound around the crotch portion of the panties, so as to fasten the hip hold flaps W B to the inner surface of the shorts.
  • the solid gathers 10 that project to the skin side along the longitudinal direction are on the skin contact surface side of the liquid-permeable surface sheet 3 by the inward side parts of the side nonwoven fabrics 7 and 8 respectively. It is formed of
  • the solid gatherer 10 is joined to the skin contact surface of the liquid-permeable surface sheet 3 as shown in FIGS. 2 and 4 and has a proximal end loop portion 11 having a hollow cross section. And a free end side loop portion 12 joined to the proximal end side loop portion 11 and formed in a hollow loop shape in cross section.
  • the proximal end loop portion 11 constitutes a proximal end portion of the solid gather 10 projecting from the liquid-permeable surface sheet 3 to the skin side, and among the side nonwoven fabrics 7 and 8 laminated in two layers, While the inner side portion of the lower side non-woven fabric 7 is double-folded, in the illustrated example, one or more in which both ends or the appropriate positions in the longitudinal direction are fixed at appropriate positions inside the double sheet. .. Are arranged, and the double sheet portion is wound once in the non-skin side direction, and the wound end portion is joined to the inner surface,
  • the cross section is formed in a hollow substantially circular loop shape. As shown in FIG.
  • the loop portion is adhered to the side of the absorbent body 4 in a state of being folded in two or in three at the front and rear end portions of the sanitary napkin 1.
  • the inside is erected in the form of a hollow loop in a predetermined section in the longitudinal direction middle portion of the sanitary napkin 1.
  • the free end side loop portion 12 constitutes a free end side portion of the solid gatherer 10 projecting to the skin side, and in the same manner as the base end side loop portion 11, a side non-woven fabric 7 laminated in two layers,
  • the inner side portion of the upper side non-woven fabric 8 is double-folded, and one or a plurality of fixed positions at both ends or the longitudinal direction are fixed at appropriate positions inside the double sheet.
  • four thread-like elastic stretchable members 14, 14 ... are disposed, and the double sheet portion is wound once in the skin side direction, and the wound double sheet end portion is the inner surface side By being bonded to each other, it is formed in a loop shape having a hollow and substantially circular cross section. As shown in FIG.
  • the loop portion is adhered to the side of the absorbent body 4 in a state of being folded in two or in three at the front and rear end portions of the sanitary napkin 1.
  • the inside is erected in a hollow loop shape in a predetermined section in the longitudinal direction intermediate portion of the sanitary napkin 1.
  • the proximal end loop portion 11 is formed of the free end side loop portion 12. It acts so as to push up from the non-skin side to the skin side, and the solid gather 10 can be made to have a height. For this reason, it is possible to prevent the leakage of the body fluid without impairing the wearing feeling and the cushioning feeling specific to the looped solid gather.
  • the proximal end side loop portion 11 is joined to the skin contact surface (outside surface) of the liquid-permeable top sheet 3 by a joining portion 15.
  • the joint portion 15 is formed in a linear strip or linear shape having a predetermined width along the longitudinal direction of the sanitary napkin 1 in a section in the longitudinal direction of the sanitary napkin 1 in which the three-dimensional gather 10 protrudes to the skin side It is done.
  • the width C of the joint portion 15 is preferably such that the ratio C / A to the width A of the proximal end loop portion 11 is 10 to 50%, particularly 15 to 30%.
  • the width C of the joint portion 15 When the width C of the joint portion 15 is too large, the protruding height of the proximal side loop portion 11 to the skin side becomes smaller, and the cushioning property of the proximal side loop portion 11 is lowered. On the other hand, if the width C of the joint portion 15 is too small, the base end side loop portion 11 becomes unstable and tends to fall in the width direction.
  • the proximal end side loop portion 11 is the skin contact surface side of the main body portion in which the absorbent body 4 is interposed between the liquid permeable top sheet 3 and the liquid impermeable back sheet 2. It is preferable to arrange in. Thereby, the protrusion height to the skin side of the solid gather 10 becomes high, and the adhesiveness of the front-end
  • the free end side loop portion 12 is joined to the proximal end side loop portion 11 by a joining portion 16.
  • the joint portion 16 is formed in a linear band or linear shape having a predetermined width along the longitudinal direction of the sanitary napkin 1 in a section in the longitudinal direction of the sanitary napkin 1 in which the three-dimensional gather 10 protrudes to the skin side ing.
  • the width D of the joint portion 16 is preferably such that the ratio D / B to the width B of the free end side loop portion 12 is 10 to 50%, particularly 15 to 30%. If the width D of the joint portion 16 is too large, the depth of the constricted portion 17 formed between the proximal end loop portion 11 and the free end side loop portion 12, which will be described in detail later, becomes small. It can not be demonstrated enough. If the width D of the joint portion 16 is too small, the free end side loop portion 12 becomes unstable and tends to fall in the width direction.
  • a double sheet portion in which the side non-woven fabric 7 constituting the base end side loop portion 11 is double-folded and a side non-woven fabric 8 constituting the free end side loop portion 12 is double-folded It is preferable to form in the position where the double sheet
  • the proximal end loop portion 11 and the free end side loop portion 12 are disposed adjacent to each other in the thickness direction (vertical direction) of the sanitary napkin 1.
  • the free end side loop portion 12 protrudes from the proximal end side loop portion 11 to the skin contact surface side, and forms a contact surface with the skin when the sanitary napkin 1 is attached, and the three-dimensional gather 10
  • the protrusion height to the skin side can be increased, and the fit to the buttocks of the wearer can be improved.
  • the standing height of the solid gather 10 (the height projecting in the thickness direction of the sanitary napkin 1 from the skin side surface of the liquid-permeable surface sheet 3) is 30 to 50 mm, preferably 35 to 40 mm. This is about twice as high as the standing height of a conventional hollow hollow solid gatherer.
  • the free end side loop portion 12 is preferably joined to the proximal end side loop portion 11 at a position slightly biased outward in the width direction.
  • the standing direction of the solid gathers inclines outward in the width direction toward the skin side, and the free end side loop portion 12 easily fits to the buttocks of the wearer, and the solid gather 10 faces the skin side Since it is formed to expand toward the body, the flow of body fluid flowing outward in the width direction along the body can be easily blocked by the solid gathers 10.
  • the inclination angle ⁇ of the solid gather 10 is, as shown in FIG.
  • the angle ⁇ formed with the thickness direction line N of the napkin 1 (perpendicular to the surface of the liquid-permeable top sheet 3) is preferably 10 to 30 °.
  • the joint portion 16 is formed at a position passing through the center line L of the solid gather 10.
  • constricted portion 17 is a valley portion formed in the connection portion between the proximal end loop portion 11 and the free end side loop portion 12 each formed in a substantially circular cross section, and is continuous along the direction in which the solid gather 10 extends. It is formed.
  • the flow of body fluid from the three-dimensional gather 10 to the width direction outer side is blocked by the entry of massive menstrual blood or the like dropped into the constricted part 17. Side leakage of body fluid can be prevented more reliably.
  • the width A of the proximal end loop portion 11 and the width B of the free end side loop portion 12 may be 15 to 25 mm, preferably 17 to 20 mm.
  • the widths A and B may be formed in the same dimension or may be formed in different dimensions.
  • the width A of the proximal end loop portion 11 may be relatively increased to enhance the stability of the solid gather 10
  • the width B of the free end side loop portion 12 may be It may be made relatively large to increase the contact area with the skin surface to further prevent leakage.
  • the outer side edges of the side non-woven fabrics 7, 8 respectively extend to the side edge of the sanitary napkin 1, but at least one side non-woven fabric is for menstruation It suffices to extend to the side edge of the napkin 1, and the other side non-woven fabric may not be extended to the side edge of the sanitary napkin 1 up to the middle position in the width direction.
  • the proximal end loop portion 11 and the free end side loop portion 12 are respectively configured by separate side non-woven fabrics 7 and 8.
  • the joint position of the free end side loop portion 12 with respect to the proximal end side loop portion 11 can be set arbitrarily.
  • the side non-woven fabrics 7 and 8 those having the same properties such as hydrophilicity and water repellency may be used, or those having different properties may be used.
  • the proximal end side loop portion 11 is made hydrophilic and the free end side loop portion 12 is made water repellent, so that the body fluid blocked by the free end side loop portion 12 is used as a base.
  • the base end side loop portion 11 is made water repellent and the free end side loop portion 12 is made hydrophilic.
  • the bodily fluid transmitting the body in the free end side loop portion 12 is quickly absorbed into the solid gatherer 10
  • the bodily fluid flowing outward in the width direction on the surface of the sanitary napkin 1 in the proximal end side loop portion 11 forms the solid gather 10 Can be absorbed and spread to the skin side.
  • the thread-like elastic stretchable members 13 and 14 are usually used styrenic rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, polyester, etc. Various ones can be used.
  • the thickness of the thread-like elastic stretchable members 13 and 14 is preferably 300 to 1000 dtex, and more preferably 400 to 550 dtex.
  • the elongation at fixing is preferably 140 to 350%, more preferably 200 to 300%.
  • the “expansion rate” means a value when the natural length is 100%.
  • the thread-like elastic stretchable member 13 disposed in the proximal end side loop portion 11 and the thread-like elastic stretchable member 14 disposed in the free end side loop portion 12 may have the same contraction force or different contraction forces. It is also good. In the case of different contraction forces, it is preferable that the thread-like elastic stretchable member 14 disposed in the free end side loop portion 12 have a greater contraction force than the thread-like elastic stretch member 13 disposed in the base end side loop portion 11 . Thereby, the free end side loop part 12 comes to stand on the skin side by stronger force, and it can improve adhesiveness with skin.
  • the thread-like elastic stretchable members 13 and 14 respectively divide the cross sections of the proximal end loop portion 11 and the free end side loop portion 12 into two, the skin side and the non-skin side with respect to the thickness direction of the sanitary napkin 1 When doing, it is preferable to arrange in the area
  • sanitary napkin 1A according to a second embodiment will be described based on FIG.
  • the sanitary napkin 1A according to the second embodiment is different from the first embodiment in the form of the three-dimensional gather 10A.
  • the proximal end loop portion 11 and the free end side loop portion 12 are disposed adjacent to each other in the width direction of the sanitary napkin 1. That is, the free end side loop portion 12 is provided adjacent to the width direction outer side of the proximal end side loop portion 11, and when the sanitary napkin 1 is attached, the free end side loop portion 12 and the proximal end side loop portion 11 Both constitute the contact surface with the skin. However, since the free end side loop portion 12 is joined only to the proximal end side loop portion 11 and is not joined to the liquid permeable surface sheet 3, the free end side loop portion 12 is the proximal end side loop portion 11. The free end side loop portion 12 is disposed obliquely to the upper side in the width direction outside of the proximal end side loop portion 11 as a whole of the three-dimensional gather 10A.
  • the body fluid is blocked by the two-stage loop solid gathers of the proximal end loop portion 11 (inner side) and the free end side loop portion 12 (outer side) in the width direction. Because it is locked, it is possible to prevent side leakage reliably.
  • the free end side loop portion 12 in the width direction outer side is joined only to the proximal end side loop portion 11 without being joined to the liquid-permeable surface sheet 3, the movable range to the skin side becomes large. You will be able to fit on the skin surface surely.
  • proximal end side loop portion 11 and the free end side loop portion 12 are arranged to be inclined toward the skin side toward the outer side in the width direction, so that it becomes easy to conform to the shape of the crotch when wearing the sanitary napkin 1A. .
  • the inclination angle ⁇ (see FIG. 4) of the solid gather 10A is a solid gather 10 that passes through the central portion of the proximal end loop portion 11 and the central portion of the free end side loop portion 12.
  • an angle ⁇ between the center line L of and the thickness direction line N of the sanitary napkin 1A is 10 to 30 °.
  • the neck portion 17 formed between the base end side loop portion 11 and the free end side loop portion 12 has the outline of the skin side of the solid gather 10A narrowed. It is formed by a part.
  • the base end side loop portion 11 and the free end side loop portion 12 are respectively constituted by the side nonwoven fabrics 7 and 8 which are separate bodies.
  • the base end side loop portion 11 and the free end side loop portion 12 are constituted by one continuous non-woven fabric 7B. It is different.
  • FIG. 7 is a cross-sectional view of a state in which the solid gather 10B according to the third embodiment is folded to the absorber 4 side.
  • the side non-woven fabric 7B extending in the center-side direction from the side of the sanitary napkin 1 is double-folded, and both ends or an appropriate length direction in an appropriate position inside the double sheet.
  • the double sheet is folded back in the side direction on the non-skin side at the center side position of the sanitary napkin 1 A portion 20, a second folded portion 21 that is folded back toward the non-skin central side at a side side position continuously to the first folded portion 20, and a center side position that is contiguous to the second folded portion 21
  • the first double sheet portion 23, the second double sheet portion 24, and the third double sheet portion are sequentially folded in four from the upper layer side by the third fold-back portion 22 folded back to the side side direction on the non-skin side 25, fourth double seat portion 26
  • a joint portion 27 to which the first double sheet portion 23 and the second double sheet portion 24 are joined is formed in the vicinity of the second folded portion, and the third double sheet portion 25 is formed.
  • the fourth double sheet portion 26 is formed with the joined portion 28 formed, and the second double sheet portion 24 and the third double sheet portion 25 are formed with the joined portion 29 formed.
  • a two-stage loop-shaped solid gather having a proximal end loop portion 11 and a free end side loop portion 12 is formed.
  • the double sheet is folded back to the non-skin side and is folded in four, but may be folded in four by folding back to the skin side.
  • a joint portion between the second double sheet portion 24 and the third double sheet portion 25 constitutes a joint portion 16 between the proximal end loop portion 11 and the free end side loop portion 12.
  • the proximal end side loop portion 11 and the free end side loop portion 12 are formed with a single non-woven fabric, the number of parts can be reduced, and the manufacturing cost can be suppressed. It becomes easy to form the free end side loop part 12 adjacent to.
  • SYMBOLS 1 Sanitary napkin, 2 ... Liquid impermeable back sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorbent body, 5 ... Encapsulation sheet, 6 ... Middle high part, 7. 8 side nonwoven fabric, 9 ... Embossed groove 10: solid gather, 11: proximal end loop portion, 12: free end side loop portion, 13: 14: thread-like elastic stretchable member, 15: 16: joint portion, 17: constricted portion

Abstract

The present invention prevents leakage of bodily fluid in an absorbent article (1) comprising three-dimensional gathers (10) in the shape of cross-sectionally hollow loops, without detriment to the comfort and cushioning sensation of the three-dimensional gathers (10). The three-dimensional gathers (10), which project towards the skin, are formed in the longitudinal direction on two side parts, respectively, of the skin-contacting-surface side of a liquid-permeable surface sheet (3). The three-dimensional gathers (10) each comprise: a base end-side loop part (11) joined to the skin-contacting surface of the liquid-permeable surface sheet (3), and formed in the shape of a cross-sectionally hollow loop; and a free end-side loop part (12) joined to the base end-side loop part (11) and formed in the shape of a cross-sectionally hollow loop. By means of the two-tier loop-shaped three-dimensional gathers, the base end-side loop part (11) acts so as to push up the free end-side loop part (12), whereby the three-dimensional gathers (10) can achieve greater height.

Description

吸収性物品Absorbent articles
　本発明は、主には生理用ナプキン、おりものシート、失禁パッド、トイレタリー等に使用される吸収性物品であって、詳しくは肌当接面側の両側部にそれぞれ長手方向に沿って断面が中空のループ状立体ギャザーが形成された吸収性物品に関する。 The present invention is an absorbent article mainly used for sanitary napkins, cushion sheets, incontinence pads, toiletries, etc. Specifically, the cross section along the longitudinal direction is on both sides on the skin contact surface side. The present invention relates to an absorbent article in which a hollow looped solid gather is formed.
　従来より、上記吸収性物品として、ポリエチレンシートまたはポリエチレンシートラミネート不織布などの不透液性裏面シートと、不織布または透液性プラスチックシートなどの透液性表面シートとの間に綿状パルプ等からなる吸収体を介在するとともに、肌当接面側の両側部にそれぞれ長手方向に沿って配設されたギャザー不織布により、肌側に突出する左右一対の立体ギャザーを形成したものが知られている。 Conventionally, the absorbent article is made of cotton-like pulp or the like between a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric and a liquid-permeable surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet. It is known to form a pair of left and right three-dimensional gathers projecting to the skin side by means of a gather non-woven fabric disposed along the longitudinal direction on both sides of the skin contact surface side while interposing an absorber.
　就寝時などにおける使用に適した夜用の生理用ナプキンでは、漏れを防止するため、前記立体ギャザーが種々の形態で形成されている。例えば、肌側への起立高さを高くするため、断面Ｚ状やΣ状の２つ折りまたは３つ折りに折り畳んで形成したものがある。しかし、折り数を増やして高さを高くすればするほど、装着時に立体ギャザーが倒れ込みやすく、倒れた部分から体液が漏れやすいとともに、倒れたギャザー部分が違和感の原因となっていた。 In the case of a sanitary napkin for night, which is suitable for use at bedtime, etc., the above-mentioned three-dimensional gathers are formed in various forms in order to prevent leakage. For example, in order to increase the standing height on the skin side, there is one that is formed by being folded in two or three in a Z-shaped or Σ-shaped cross section. However, as the number of folds is increased and the height is increased, the three-dimensional gather tends to fall down at the time of wearing, and the body fluid is likely to leak from the fallen part, and the fallen gather part causes discomfort.
　また、装着時の違和感を軽減し、クッション性を持たせることなどを目的として、立体ギャザーの断面を中空のループ状に形成したものも開発されている（下記特許文献１、２など）。 Also, for the purpose of reducing the discomfort when worn and providing cushioning properties, etc., those in which the cross section of the three-dimensional gather is formed in a hollow loop shape have also been developed ( Patent Documents 1 and 2, etc. below).
特開２０１０－１１０５３２号公報Unexamined-Japanese-Patent No. 2010-110532 特開２０１１－３０８０１号公報JP, 2011-30801, A
　しかしながら、断面が中空のループ状の立体ギャザーでは、高さを高くとることができないため、肌面との密着性が低下し、漏れが生じやすい。 However, in the case of a loop-shaped three-dimensional gather whose cross section is hollow, the height can not be increased, so the adhesion with the skin surface is reduced and a leak is likely to occur.
　また、ループ状の立体ギャザーは、肌当接面が平面状に形成された２つ折りまたは３つ折りのものに比べて、肌面との接触面積が小さく、この点においても漏れが生じやすい構造であった。 In addition, the loop-shaped three-dimensional gathers have a smaller contact area with the skin surface than in the case of two-fold or three-fold in which the skin contact surface is formed in a flat shape, and also in this structure there were.
　そこで本発明の主たる課題は、断面が中空のループ状の立体ギャザーを備えた吸収性物品において、立体ギャザーの装着感及びクッション感を損なうことなく、体液の漏れを防止した吸収性物品を提供することにある。 Therefore, the main object of the present invention is to provide an absorbent article in which leakage of body fluid is prevented without impairing the wearing feeling and cushioning feeling of a solid gather in an absorbent article provided with a loop-shaped solid gather having a hollow cross section. It is.
　上記課題を解決するために請求項１に係る本発明として、透液性表面シートの肌当接面側の両側部にそれぞれ、長手方向に沿って肌側に突出する立体ギャザーが形成された吸収性物品において、
　前記立体ギャザーは、前記透液性表面シートの肌当接面に接合され、断面が中空のループ状に形成された基端側ループ部と、前記基端側ループ部に接合され、断面が中空のループ状に形成された自由端側ループ部とを備えていることを特徴とする吸収性物品が提供される。 In order to solve the above-mentioned subject, as the present invention concerning Claim 1, absorption which the solid gathers projected on the skin side along with a longitudinal direction was formed in the both sides of the skin contact side of a liquid-permeable surface sheet, respectively. In sexual
The solid gathers are joined to the skin contact surface of the liquid-permeable surface sheet, and are joined to the proximal end loop portion formed in a hollow loop shape in cross section and the proximal end loop portion, and the cross section is hollow And a free end side loop portion formed in the form of a loop.
　上記請求項１記載の発明では、前記基端側ループ部と自由端側ループ部とからなる２段式のループ状立体ギャザーを備えているため、前記基端側ループ部が自由端側ループ部を押し上げるように作用し、立体ギャザーに高さを持たせることができるようになり、ループ状立体ギャザー特有の装着感及びクッション感を損なうことなく、体液の漏れが防止できるようになる。 In the invention according to the first aspect, since the two-stage loop solid gatherer comprising the proximal end loop portion and the free end side loop portion is provided, the proximal end loop portion is the free end side loop portion The three-dimensional gather can be made to have a height, so that the leakage of the body fluid can be prevented without impairing the wearing feeling and the cushioning feeling peculiar to the loop-like three-dimensional gather.
　請求項２に係る本発明として、前記基端側ループ部と自由端側ループ部とは、吸収性物品の厚み方向に隣接して配置されている請求項１記載の吸収性物品が提供される。 According to a second aspect of the present invention, there is provided the absorbent article according to the first aspect, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the thickness direction of the absorbent article. .
　上記請求項２記載の発明は、前記立体ギャザーの第１の実施形態例であり、前記基端側ループ部と自由端側ループ部とを吸収性物品の厚み方向に隣接して配置したものである。これによって、吸収性物品の装着時には、主に前記自由端側ループ部が肌との接触面を構成するようになる。このため、立体ギャザーの肌側への突出高さを高くすることができ、着用者の鼠蹊部へのフィット性が向上できる。 The invention according to claim 2 is a first embodiment of the solid gather, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the thickness direction of the absorbent article. is there. Thereby, when the absorbent article is attached, the free end side loop portion mainly constitutes the contact surface with the skin. For this reason, the protrusion height to the skin side of a solid gather can be made high, and the fit nature to a wearer's buttocks can be improved.
　請求項３に係る本発明として、前記基端側ループ部と自由端側ループ部とは、吸収性物品の幅方向に隣接して配置されている請求項１記載の吸収性物品が提供される。 According to a third aspect of the present invention, there is provided the absorbent article according to the first aspect, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the width direction of the absorbent article. .
　上記請求項３記載の発明は、前記立体ギャザーの第２の実施形態例であり、前記基端側ループ部と自由端側ループ部とを吸収性物品の幅方向に隣接して配置したものである。これによって、吸収性物品の装着時には、前記自由端側ループ部及び基端側ループ部が両方とも肌との接触面を構成するようになる。このため、幅方向に連なる２段のループ状立体ギャザーによって体液が塞き止められ、横漏れが確実に防止できるようになる。特に、自由端側ループ部は、透液性表面シートに接合されずに、基端側ループ部に接合されているため、肌側への可動範囲が大きくなり、肌面に確実にフィットできるようになる。 The invention according to claim 3 is a second embodiment of the solid gather, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the width direction of the absorbent article. is there. As a result, when the absorbent article is attached, the free end side loop portion and the proximal end side loop portion both constitute a contact surface with the skin. Therefore, the body fluid is blocked by the two-stage loop solid gathers connected in the width direction, and the side leakage can be reliably prevented. In particular, since the free end side loop portion is joined to the proximal end side loop portion without being joined to the liquid-permeable surface sheet, the movable range to the skin side becomes large, so that the skin surface can be surely fitted. become.
　請求項４に係る本発明として、前記基端側ループ部と自由端側ループ部との間に、前記立体ギャザーの吸収性物品中央側の外形線又は肌側の外形線が括れた括れ部が形成されている請求項１～３いずれかに記載の吸収性物品が提供される。 According to the present invention as set forth in claim 4, between the base end side loop portion and the free end side loop portion, a neckline portion where the outline of the center side of the absorbent article of the solid gather or the outline of the skin side is narrow The absorbent article according to any one of claims 1 to 3, which is being formed.
　上記請求項４記載の発明では、前記基端側ループ部と自由端側ループ部との間に、前記立体ギャザーの吸収性物品中央側の外形線又は肌側の外形線が括れた括れ部が形成されているため、この括れ部が幅方向中央側から流れてきたドロッとした塊状の経血などの体液が入り込むポケットとして作用することによって、立体ギャザーより外側に体液が流れるのを塞き止めることができ、体液の横漏れがより確実に防止できるようになる。なお、上記第１の実施形態例に係る基端側ループ部と自由端側ループ部とが吸収性物品の厚み方向に隣接して配置された立体ギャザーでは、前記立体ギャザーの吸収性物品中央側の外形線が括れた括れ部が形成され、上記第２の実施形態例に係る基端側ループ部と自由端側ループ部とが吸収性物品の幅方向に隣接して配置された立体ギャザーでは、前記立体ギャザーの肌側の外形線が括れた括れ部が形成されている。 In the invention according to the fourth aspect, between the base end side loop portion and the free end side loop portion, the outline portion on the center side of the absorbent article or the outline portion on the skin side of the solid gather is narrowed Because it is formed, this constricted portion acts as a pocket into which body fluid such as lumpy lumpy menstrual blood that has flowed from the center side in the width direction enters, thereby blocking the flow of body fluid outside the solid gather Side leakage can be prevented more reliably. In the solid gather where the proximal end loop portion and the free end side loop portion according to the first embodiment are disposed adjacent to each other in the thickness direction of the absorbent article, the absorbent article center side of the solid gather is In the solid gather in which the narrow part where the outline of the line was narrowed is formed, and the proximal end side loop part and the free end side loop part according to the second embodiment are arranged adjacent to each other in the width direction of the absorbent article The neck portion is formed in which the outline of the skin side of the solid gather is bound.
　請求項５に係る本発明として、前記基端側ループ部及び自由端側ループ部は、それぞれ別体の不織布によって構成されている請求項１～４いずれかに記載の吸収性物品が提供される。 According to a fifth aspect of the present invention, there is provided the absorbent article according to any one of the first to fourth aspects, wherein the proximal end loop portion and the free end side loop portion are respectively composed of separate non-woven fabrics. .
　上記請求項５記載の発明では、前記基端側ループ部及び自由端側ループ部を、それぞれ別体の不織布で構成することによって、基端側ループ部に対する自由端側ループ部の接合位置を任意に設定することができるとともに、異なる性質の不織布を用いることによって基端側ループ部と自由端側ループ部とで異なる機能を付加することが可能となる。 In the invention according to the fifth aspect, by forming the proximal end loop portion and the free end side loop portion with separate non-woven fabrics, the bonding position of the free end side loop portion with respect to the proximal end loop portion is arbitrary. In addition, different functions can be added to the proximal end loop portion and the free end side loop portion by using non-woven fabrics having different properties.
　請求項６に係る本発明として、前記基端側ループ部及び自由端側ループ部は、１枚の不織布によって構成されている請求項１～４いずれかに記載の吸収性物品が提供される。 The present invention according to claim 6 provides the absorbent article according to any one of claims 1 to 4, wherein the proximal end loop portion and the free end side loop portion are each formed of a single non-woven fabric.
　上記請求項６記載の発明では、前記基端側ループ部及び自由端側ループ部を、１枚の不織布で構成することによって、部品点数を少なくでき、製造コストを抑えることができるとともに、基端側ループ部に隣接して自由端側ループ部を形成しやすくなる。 In the invention according to the sixth aspect, by forming the proximal end side loop portion and the free end side loop portion with a single non-woven fabric, the number of parts can be reduced, and the manufacturing cost can be suppressed. It becomes easy to form the free end side loop part adjacent to the side loop part.
　以上詳説のとおり本発明によれば、断面が中空のループ状の立体ギャザーを備えた吸収性物品において、立体ギャザーの装着感及びクッション感を損なうことなく、体液の漏れが防止できるようになる。 As described above, according to the present invention, in an absorbent article provided with a loop-shaped solid gather having a hollow cross section, it is possible to prevent the leakage of body fluid without impairing the fit and cushion of the solid gather.
本発明に係る生理用ナプキン１の一部破断展開図である。It is a partially broken development view of the sanitary napkin 1 according to the present invention. 図１のII－II線矢視図である。It is an II-II arrow line view of FIG. 図１のIII－III線矢視図である。It is an III-III arrow line view of FIG. 立体ギャザー１０の拡大断面図である。FIG. 2 is an enlarged cross-sectional view of a solid gather 10; 第２形態例に係る生理用ナプキン１の横断面図（図１のII－II線に対応する位置の横断面図）である。It is a cross-sectional view (transverse view of the position corresponding to the II-II line of FIG. 1) of the sanitary napkin 1 which concerns on the example of a 2nd form. 第３形態例に係る生理用ナプキン１の横断面図（図１のII－II線に対応する位置の横断面図）である。It is a cross-sectional view (transverse view of the position corresponding to the II-II line of FIG. 1) of the sanitary napkin 1 which concerns on the example of a 3rd form. 第３形態例に係る立体ギャザー１０Ｂを折り畳んだ状態の拡大断面図である。It is an expanded sectional view of the state where three-dimensional gathers 10B concerning a 3rd example of a form were folded.
　以下、本発明の実施の形態について図面を参照しながら詳述する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
＜第１形態例＞
〔生理用ナプキン１の基本構造〕
　本発明に係る生理用ナプキン１は、図１～図３に示されるように、ポリエチレンシートなどからなる不透液性裏面シート２と、経血やおりものなど（以下、まとめて体液ともいう。）を速やかに透過させる透液性表面シート３と、これら両シート２，３間に介装された綿状パルプまたは合成パルプなどからなる吸収体４と、肌当接面側の両側部に長手方向に沿ってほぼ全長に亘って設けられたサイド不織布７、８とを備え、かつ前記吸収体４の周囲においては、その上下端縁部では前記不透液性裏面シート２と透液性表面シート３との外縁部がホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合され、またその両側縁部では吸収体４よりも側方に延出している前記不透液性裏面シート２と前記サイド不織布７、８とがホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合されることにより、吸収体が介在しないフラップ部が形成されたものである。なお、図示例では、前記吸収体４の形状保持および拡散性向上のために、前記吸収体４をクレープ紙又は不織布などからなる被包シート５で囲繞しているが、この被包シート５は設けなくてもよい。また、図示しないが、前記透液性表面シート３の非肌側に隣接して、前記透液性表面シート３とほぼ同形状の親水性の不織布などからなるセカンドシートを配設してもよい。 <First embodiment>
[Basic structure of sanitary napkin 1]
The sanitary napkin 1 according to the present invention, as shown in FIGS. 1 to 3, is a liquid-impervious back sheet 2 made of a polyethylene sheet or the like, menstrual blood or a sod (hereinafter collectively referred to as body fluid). And an absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3 and long side portions on the skin contact surface side. Side non-woven fabrics 7 and 8 provided along substantially the entire length along the direction, and around the absorber 4 at the upper and lower edges thereof the liquid-impervious backsheet 2 and the liquid-permeable surface The impermeable liquid which is bonded to the outer edge of the sheet 3 by a bonding means such as an adhesive such as a hot melt or a heat seal or an ultrasonic seal, and which extends laterally beyond the absorber 4 at both side edges thereof. Back sheet 2 and the side non-woven fabric 7 8 and the adhesive or heat sealing, such as a hot melt, by being bonded by bonding means such as ultrasonic sealing, in which the flap portion where the absorber is not interposed is formed. In the illustrated example, the absorbent body 4 is surrounded by the wrapper sheet 5 made of crepe paper or non-woven fabric for the purpose of shape retention and diffusion improvement of the absorbent body 4. It is not necessary to provide it. Further, although not shown, a second sheet made of a hydrophilic non-woven material having substantially the same shape as the liquid permeable surface sheet 3 may be disposed adjacent to the non-skin side of the liquid permeable surface sheet 3. .
　以下、さらに前記生理用ナプキン１の構造について詳述すると、
　前記不透液性裏面シート２は、ポリエチレン等の少なくとも遮水性を有するシート材が用いられるが、蒸れ防止の観点から透湿性を有するものを用いるのが望ましい。この遮水・透湿性シート材としては、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を溶融混練してシートを成形した後、一軸または二軸方向に延伸することにより得られる微多孔性シートが好適に用いられる。前記不透液性裏面シート２の非肌側面（外面）にはナプキン長手方向に沿って１または複数条の粘着剤層（図示せず）が形成され、身体への装着時に生理用ナプキン１を下着に固定するようになっている。前記不透液性裏面シート２としては、プラスチックフィルムと不織布とを積層させたポリラミ不織布を用いてもよい。 Hereinafter, the structure of the sanitary napkin 1 will be described in more detail,
As the liquid-impervious back sheet 2, a sheet material having at least a water barrier such as polyethylene is used, but it is preferable to use a material having moisture permeability from the viewpoint of preventing the stuffing. As this water-impervious and moisture-permeable sheet material, a microporous obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and stretching in a uniaxial or biaxial direction A sheet is preferably used. On the non-skin side (outside surface) of the liquid-impervious backsheet 2, one or more adhesive layers (not shown) are formed along the longitudinal direction of the napkin, and the sanitary napkin 1 is It is fixed to underwear. As the liquid-impervious backsheet 2, a polylaminated non-woven fabric in which a plastic film and non-woven fabric are laminated may be used.
　次いで、前記透液性表面シート３は、有孔または無孔の不織布や多孔性プラスチックシートなどが好適に用いられる。不織布を構成する素材繊維としては、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維とすることができ、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工法によって得られた不織布を用いることができる。これらの加工法の内、スパンレース法は柔軟性、ドレープ性に富む点で優れ、サーマルボンド法は嵩高で圧縮復元性が高い点で優れている。前記透液性表面シート３に多数の透孔を形成した場合には、体液が速やかに吸収されるようになり、ドライタッチ性に優れたものとなる。不織布の繊維は、長繊維または短繊維のいずれでもよいが、好ましくはタオル地の風合いを出すため短繊維を使用するのがよい。また、エンボス処理を容易とするために、比較的低融点のポリエチレンまたはポリプロピレン等のオレフィン系繊維のものを用いるのがよい。また、融点の高い繊維を芯とし融点の低い繊維を鞘とした芯鞘型繊維やサイド－バイ－サイド型繊維、分割型繊維の複合繊維を好適に用いることもできる。 Next, a porous or non-porous non-woven fabric, a porous plastic sheet or the like is suitably used as the liquid-permeable surface sheet 3. The material fibers constituting the non-woven fabric may be synthetic fibers of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc., regenerated fibers such as rayon or cupra, natural fibers such as cotton, etc. A nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a meltblown method, a needle punch method can be used. Among these processing methods, the spun lace method is excellent in flexibility and drapability, and the thermal bonding method is excellent in bulkiness and high compression recovery. When a large number of through holes are formed in the liquid-permeable surface sheet 3, the body fluid is rapidly absorbed, and the dry touch property is excellent. The non-woven fibers may be either long fibers or short fibers, but preferably short fibers are used to give a towel texture. Further, in order to facilitate the embossing process, it is preferable to use an olefin-based fiber such as polyethylene or polypropylene having a relatively low melting point. In addition, a core-sheath fiber, a side-by-side fiber, or a split fiber composite fiber in which a fiber having a high melting point is used as a core and a fiber having a low melting point is sheathed can be suitably used.
　前記不透液性裏面シート２と透液性表面シート３との間に介在される吸収体４は、たとえば綿状パルプと吸水性ポリマーとにより構成されている。前記吸水性ポリマーは吸収体を構成するパルプ中に、例えば粒状粉として混入されている。前記パルプとしては、木材から得られる化学パルプ、溶解パルプ等のセルロース繊維や、レーヨン、アセテート等の人工セルロース繊維からなるものが挙げられ、広葉樹パルプよりは繊維長の長い針葉樹パルプの方が機能および価格の面で好適に使用される。前記吸収体４の目付は、２５０～６５０ｇ／ｍ２、好ましくは３００～４００ｇ／ｍ２とするのがよい。 The absorbent 4 interposed between the liquid-impervious backsheet 2 and the liquid-permeable topsheet 3 is made of, for example, cotton-like pulp and a water-absorbent polymer. The water-absorbing polymer is mixed, for example, as granular powder in the pulp constituting the absorbent. Examples of the pulp include cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate, and softwood pulp having a longer fiber length than hardwood pulp functions and It is suitably used in terms of price. The basis weight of the absorber 4 is 250 to 650 g / m 2 , preferably 300 to 400 g / m 2 .
　また、前記吸収体４には合成繊維を混合しても良い。前記合成繊維は、例えばポリエチレン又はポリプロピレン等のポリオレフィン系、ポリエチレンテレフタレートやポリブチレンテレフタレート等のポリエステル系、ナイロンなどのポリアミド系、及びこれらの共重合体などを使用することができるし、これら２種を混合したものであってもよい。また、融点の高い繊維を芯とし融点の低い繊維を鞘とした芯鞘型繊維やサイド－バイ－サイド型繊維、分割型繊維などの複合繊維も用いることができる。前記合成繊維は、体液に対する親和性を有するように、疎水性繊維の場合には親水化剤によって表面処理したものを用いるのが望ましい。 In addition, synthetic fibers may be mixed in the absorber 4. Examples of the synthetic fibers include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, copolymers of these, and the like. It may be a mixture. In addition, composite fibers such as core-sheath fibers, side-by-side fibers, split fibers, etc., in which fibers having a high melting point are cored and fibers having a low melting point are sheathed may be used. In the case of a hydrophobic fiber, it is desirable to use the synthetic fiber surface-treated with a hydrophilizing agent so as to have an affinity for body fluid.
　前記吸収体４の肌側面には、肌側に増厚された吸収体の中高部６を形成するのが好ましい。前記吸収体４及び中高部６は、それぞれ別個に製造した後、組立工程で積層してもよいし、吸収体を立体的に積繊することによって一体的に形成してもよい。また、吸収体４の上段に中高部６を積繊する二段積繊構造としてもよい。 It is preferable to form the mid-high section 6 of the absorber thickened on the skin side on the skin side of the absorber 4. The absorber 4 and the middle and high portion 6 may be separately manufactured and then laminated in an assembly process, or may be integrally formed by stacking the absorbers in three dimensions. In addition, a two-tiered fiber structure may be used in which the middle and high portions 6 are stacked in the upper stage of the absorber 4.
　前記中高部６は、吸収体４の肌側面に隣接するとともに、吸収体４の幅方向中央部に配置され、吸収体４より幅寸法及び長手寸法が小さく形成されている。前記中高部６の厚みは、厚すぎると剛性が上がり身体への密着性が低下するし、薄すぎると体液排出部Ｈとの密着性が低下するため３～２５ｍｍ、好ましくは５～１８ｍｍとするのがよい。また、前記中高部６が配置された部分の中高部６と吸収体４との合計目付は、４００～９００ｇ／ｍ２、特に６００～８００ｇ／ｍ２とするのがよい。 The middle and high portion 6 is adjacent to the skin side surface of the absorber 4 and is disposed at the center in the width direction of the absorber 4 and has a smaller width dimension and longitudinal dimension than the absorber 4. The thickness of the middle and high portion 6 is 3 to 25 mm, preferably 5 to 18 mm because the rigidity increases and the adhesion to the body decreases when the thickness is too large, and the adhesion to the body fluid discharge portion H decreases when the thickness is too thin. That's good. The total basis weight of the middle high portion 6 and the absorber 4 in the portion where the middle high portion 6 is disposed is preferably 400 to 900 g / m 2 , and more preferably 600 to 800 g / m 2 .
　前記中高部６は、着用者の体液排出部Ｈを含む領域、具体的には体液排出部Ｈより前側及び後側に若干長い領域に形成されている。前記中高部６は、ナプキン前後方向に長い縦長に形成され、両側縁がナプキン長手方向に延びる直線で形成されている。 The middle and high portion 6 is formed in a region including the body fluid discharge portion H of the wearer, specifically, a slightly longer region on the front side and the rear side than the body fluid discharge portion H. The middle high portion 6 is formed longitudinally long in the longitudinal direction of the napkin, and both side edges thereof are formed in a straight line extending in the longitudinal direction of the napkin.
　前記中高部６は、少なくともパルプ繊維と合成繊維とを含むとともに、前記パルプ繊維：合成繊維の比率を重量換算で８０～２０：２０～８０、好ましくは４０～６０：６０～４０で混合したものが望ましい。また、前記中高部６は吸水性ポリマーを含有することができる。前記吸水性ポリマーとしては、たとえばポリアクリル酸塩架橋物、自己架橋したポリアクリル酸塩、アクリル酸エステル－酢酸ビニル共重合体架橋物のケン化物、イソブチレン・無水マレイン酸共重合体架橋物、ポリスルホン酸塩架橋物や、ポリエチレンオキシド、ポリアクリルアミドなどの水膨潤性ポリマーを部分架橋したもの等が挙げられる。これらの内、吸水量、吸水速度に優れるアクリル酸またはアクリル酸塩系のものが好適である。前記吸水性能を有する吸水性ポリマーは製造プロセスにおいて、架橋密度および架橋密度勾配を調整することにより吸水力と吸水速度の調整が可能である。配合量は中高部６が吸収体４側への浸透を促進する必要上、配合量を多くすると所謂ゲルブロッキング現象が起きるため、パルプ繊維及び合成繊維の合計重量に対して重量換算で１～１０％の割合で配合するのが望ましい。なお、吸水性ポリマー含有率が５０％を超える場合にはパルプ繊維間の絡み合いが無くなり、シート強度が低下し破れや割れ等が発生し易くなるため望ましくない。 The middle and high portion 6 contains at least a pulp fiber and a synthetic fiber, and the pulp fiber: synthetic fiber ratio is mixed at 80 to 20:20 to 80, preferably 40 to 60:60 to 40 in weight conversion. Is desirable. In addition, the middle and high portion 6 can contain a water absorbing polymer. Examples of the water-absorbing polymer include crosslinked polyacrylates, self-crosslinked polyacrylates, saponified acrylic acid ester-vinyl acetate copolymer crosslinked products, crosslinked isobutylene / maleic anhydride copolymers, polysulfone Examples thereof include acid salt cross-linked products and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, acrylic acid or acrylate based ones excellent in water absorption amount and water absorption speed are preferable. The water absorbing polymer having the water absorbing performance can adjust the water absorbing power and the water absorbing speed by adjusting the crosslink density and the crosslink density gradient in the production process. The compounding amount is 1 to 10 in weight conversion with respect to the total weight of the pulp fiber and the synthetic fiber, since the so-called gel blocking phenomenon occurs when the compounding amount is increased because the middle and high portions 6 need to promote permeation to the absorber 4 side. It is desirable to blend in the ratio of%. When the water-absorbent polymer content exceeds 50%, the entanglement between the pulp fibers is lost, the sheet strength is reduced, and tears and cracks are easily generated, which is not desirable.
　前記中高部６としては、着用者の体液排出部Ｈを含む領域から臀部溝を含む領域にかけて設けられた細長状のものを用いることができる。 As the middle and high portion 6, it is possible to use an elongated portion provided from the region including the body fluid discharge portion H of the wearer to the region including the buttocks groove.
　また、少なくとも体液排出部Ｈに対応する領域の両側に、生理用ナプキン１の長手方向に沿って、透液性表面シート３の肌当接面側からの圧搾により、透液性表面シート３から吸収体４にかけて一体的に窪ませたエンボス溝９を任意のパターンで形成することができる。 In addition, the liquid permeable top sheet 3 is squeezed from the skin contact surface side of the liquid permeable top sheet 3 along the longitudinal direction of the sanitary napkin 1 at least on both sides of the region corresponding to the body fluid discharge portion H. The embossed grooves 9 integrally recessed to the absorber 4 can be formed in any pattern.
　前記透液性表面シート３の幅寸法は、図示例では、図２及び図３の横断面図に示されるように、吸収体４の幅よりも若干長めとされ、吸収体４を覆うだけに止まり、それより外方側は前記透液性表面シート３とは別の２層に積層されたサイド不織布７、８、具体的には経血やおりもの等が浸透するのを防止する、あるいは肌触り感を高めるなどの目的に応じて、適宜の撥水処理または親水処理を施した不織布素材を用いて構成されたサイド不織布７、８が配設されている。かかるサイド不織布７、８としては、天然繊維、合成繊維または再生繊維などを素材として、適宜の加工法によって形成されたものを使用することができるが、好ましくはゴワ付き感を無くすとともに、ムレを防止するために、坪量を抑えて通気性を持たせた不織布を用いるのがよい。具体的には、坪量を１３～２３ｇ／ｍ２として作製された不織布を用いるのが望ましく、かつ体液の透過を確実に防止するためにシリコン系、パラフィン系、アルキルクロミッククロリド系撥水剤などをコーティングした撥水処理不織布が好適に使用される。 In the illustrated example, the width dimension of the liquid-permeable top sheet 3 is slightly longer than the width of the absorber 4 as shown in the cross-sectional views of FIG. 2 and FIG. Stop the side non-woven fabric 7, 8 outside specifically laminated on two layers different from the liquid-permeable surface sheet 3 outside, to prevent permeation of menstrual blood and cages, etc., or Side nonwoven fabrics 7 and 8 configured using nonwoven fabric materials that have been subjected to appropriate water repelling treatment or hydrophilic treatment are disposed according to the purpose of enhancing the feeling of touch and the like. As the side non-woven fabrics 7 and 8, materials formed by an appropriate processing method can be used using natural fibers, synthetic fibers or regenerated fibers as a material, but preferably, while removing a feeling of gois and removing mure. In order to prevent this, it is preferable to use a non-woven fabric which has a low basis weight and is made breathable. Specifically, it is desirable to use a non-woven fabric manufactured at a basis weight of 13 to 23 g / m 2 , and in order to reliably prevent the permeation of body fluid, a silicone based, paraffin based, alkylchromic chloride based water repellent, etc. A water repellent treated nonwoven fabric coated with is preferably used.
　前記サイド不織布７、８は、図２及び図３に示されるように、幅方向中間部より外側部分を所定の内側位置から不透液性裏面シート２の外縁までの範囲に亘ってホットメルトなどの接着剤によって接着し、これら前記サイド不織布７、８と不透液性裏面シート２との積層シート部分により吸収体４の両側部に吸収体４が介在しないフラップ部が形成されている。このフラップ部は、ほぼ体液排出部Ｈに相当する吸収体側部位置に左右一対のウイング状フラップＷ、Ｗを形成するとともに、これより臀部側（後部側）位置にヒップホールド用フラップＷＢ、ＷＢを形成してもよい。これらウイング状フラップＷ、Ｗおよびヒップホールド用フラップＷＢ、ＷＢの外面側にはそれぞれ粘着剤層（図示せず）が備えられ、ショーツに対する装着時に、前記ウイング状フラップＷ、Ｗを基端部の折返し線ＲＬ位置にて反対側に折り返し、ショーツのクロッチ部分に巻き付けて止着するとともに、前記ヒップホールド用フラップＷＢをショーツの内面に止着するようになっている。 As shown in FIGS. 2 and 3, the side non-woven fabrics 7 and 8 are hot melt or the like in the range from the predetermined inner position to the outer edge of the liquid-impervious back sheet 2 outside the widthwise middle portion The flaps are formed on both sides of the absorbent body 4 by the laminated sheet portions of the side non-woven fabrics 7 and 8 and the liquid-impervious back sheet 2. The flaps form a pair of left and right wing-shaped flaps W, W at absorber side positions substantially corresponding to the body fluid discharge portion H, and hip-hold flaps W B , W at positions from the buttocks side (rear side) B may be formed. An adhesive layer (not shown) is provided on the outer surface side of each of the wing-shaped flaps W and W and the hip-hold flaps W B and W B , and the wing-shaped flaps W and W are proximally attached when attached to shorts. folded on the opposite side at the folding line RL position of parts, as well as fastened is wound around the crotch portion of the panties, so as to fasten the hip hold flaps W B to the inner surface of the shorts.
　一方、前記サイド不織布７、８の内方側部分によって、前記透液性表面シート３の肌当接面側の両側部にそれぞれ、長手方向に沿って肌側に突出する立体ギャザー１０が左右対で形成されている。 On the other hand, the solid gathers 10 that project to the skin side along the longitudinal direction are on the skin contact surface side of the liquid-permeable surface sheet 3 by the inward side parts of the side nonwoven fabrics 7 and 8 respectively. It is formed of
〔立体ギャザー１０〕
　以下、前記立体ギャザー１０について詳細に説明する。前記立体ギャザー１０は、図２及び図４に示されるように、前記透液性表面シート３の肌当接面に接合され、断面が中空のループ状に形成された基端側ループ部１１と、前記基端側ループ部１１に接合され、断面が中空のループ状に形成された自由端側ループ部１２とを備えている。 [Solid gather 10]
Hereinafter, the solid gather 10 will be described in detail. The solid gatherer 10 is joined to the skin contact surface of the liquid-permeable surface sheet 3 as shown in FIGS. 2 and 4 and has a proximal end loop portion 11 having a hollow cross section. And a free end side loop portion 12 joined to the proximal end side loop portion 11 and formed in a hollow loop shape in cross section.
　前記基端側ループ部１１は、透液性表面シート３から肌側に突出する立体ギャザー１０の基端側部分を構成するものであり、２層に積層されたサイド不織布７，８のうち、下層側のサイド不織布７の内方側部分が二重に折り返されるとともに、この二重シート内部の適宜の位置に両端または長手方向の適宜の位置が固定された１又は複数本の、図示例では４本の糸状弾性伸縮部材１３、１３…が配設され、かつ前記二重シート部分が非肌側方向に１回巻回され、この巻回された端部が内面に接合されることにより、断面が中空の略円形からなるループ状に形成されている。このループ部は、生理用ナプキン１の前後端部では、図３に示されるように、２つ折りまたは３つ折りに折り畳まれた状態で吸収体４側に接着されている。これによって、前記糸状弾性伸縮部材１３…の収縮力により、生理用ナプキン１の長手方向中間部における所定の区間において、内部が中空のループ状に起立している。 The proximal end loop portion 11 constitutes a proximal end portion of the solid gather 10 projecting from the liquid-permeable surface sheet 3 to the skin side, and among the side nonwoven fabrics 7 and 8 laminated in two layers, While the inner side portion of the lower side non-woven fabric 7 is double-folded, in the illustrated example, one or more in which both ends or the appropriate positions in the longitudinal direction are fixed at appropriate positions inside the double sheet. .. Are arranged, and the double sheet portion is wound once in the non-skin side direction, and the wound end portion is joined to the inner surface, The cross section is formed in a hollow substantially circular loop shape. As shown in FIG. 3, the loop portion is adhered to the side of the absorbent body 4 in a state of being folded in two or in three at the front and rear end portions of the sanitary napkin 1. As a result, due to the contraction force of the thread-like elastic stretchable member 13, the inside is erected in the form of a hollow loop in a predetermined section in the longitudinal direction middle portion of the sanitary napkin 1.
　前記自由端側ループ部１２は、肌側に突出する立体ギャザー１０の自由端側部分を構成するものであり、上記基端側ループ部１１と同様に、２層に積層されたサイド不織布７，８のうち、上層側のサイド不織布８の内方側部分が二重に折り返されるとともに、この二重シート内部の適宜の位置に両端または長手方向の適宜の位置が固定された１又は複数本の、図示例では４本の糸状弾性伸縮部材１４、１４…が配設され、かつ前記二重シート部分が肌側方向に１回巻回され、この巻回された二重シート端部が内面側に接合されることにより、断面が中空の略円形からなるループ状に形成されている。このループ部は、生理用ナプキン１の前後端部では、図３に示されるように、２つ折りまたは３つ折りに折り畳まれた状態で吸収体４側に接着されている。これによって、前記糸状弾性伸縮部材１４…の収縮力により、生理用ナプキン１の長手方向中間部における所定の区間において、内部が中空のループ状に起立している。 The free end side loop portion 12 constitutes a free end side portion of the solid gatherer 10 projecting to the skin side, and in the same manner as the base end side loop portion 11, a side non-woven fabric 7 laminated in two layers, The inner side portion of the upper side non-woven fabric 8 is double-folded, and one or a plurality of fixed positions at both ends or the longitudinal direction are fixed at appropriate positions inside the double sheet. In the illustrated example, four thread-like elastic stretchable members 14, 14 ... are disposed, and the double sheet portion is wound once in the skin side direction, and the wound double sheet end portion is the inner surface side By being bonded to each other, it is formed in a loop shape having a hollow and substantially circular cross section. As shown in FIG. 3, the loop portion is adhered to the side of the absorbent body 4 in a state of being folded in two or in three at the front and rear end portions of the sanitary napkin 1. As a result, due to the contraction force of the thread-like elastic stretchable members 14, the inside is erected in a hollow loop shape in a predetermined section in the longitudinal direction intermediate portion of the sanitary napkin 1.
　前記立体ギャザー１０が基端側ループ部１１と自由端側ループ部１２とからなる２段式のループ状立体ギャザーで構成されることによって、基端側ループ部１１が自由端側ループ部１２を非肌側から肌側に押し上げるように作用し、立体ギャザー１０に高さを持たせることができようになる。このため、ループ状立体ギャザー特有の装着感及びクッション感を損なうことなく、体液の漏れが防止できるようになる。 When the solid gather 10 is constituted by a two-stage loop solid gather consisting of the proximal end loop portion 11 and the free end side loop portion 12, the proximal end loop portion 11 is formed of the free end side loop portion 12. It acts so as to push up from the non-skin side to the skin side, and the solid gather 10 can be made to have a height. For this reason, it is possible to prevent the leakage of the body fluid without impairing the wearing feeling and the cushioning feeling specific to the looped solid gather.
　前記基端側ループ部１１は、接合部１５によって前記透液性表面シート３の肌当接面（外面）に接合されている。前記接合部１５は、前記立体ギャザー１０が肌側に突出する生理用ナプキン１の長手方向の区間において、生理用ナプキン１の長手方向に沿って所定幅を有する直線的な帯状又は線状に形成されている。前記接合部１５の幅Ｃは、基端側ループ部１１の幅Ａに対する割合Ｃ／Ａが１０～５０％、特に１５～３０％であるのが好ましい。前記接合部１５の幅Ｃが大き過ぎると、基端側ループ部１１の肌側への突出高さが小さくなるとともに、基端側ループ部１１のクッション性が低下する。一方、前記接合部１５の幅Ｃが小さすぎると、基端側ループ部１１が不安定となり、幅方向に倒れやすくなる。 The proximal end side loop portion 11 is joined to the skin contact surface (outside surface) of the liquid-permeable top sheet 3 by a joining portion 15. The joint portion 15 is formed in a linear strip or linear shape having a predetermined width along the longitudinal direction of the sanitary napkin 1 in a section in the longitudinal direction of the sanitary napkin 1 in which the three-dimensional gather 10 protrudes to the skin side It is done. The width C of the joint portion 15 is preferably such that the ratio C / A to the width A of the proximal end loop portion 11 is 10 to 50%, particularly 15 to 30%. When the width C of the joint portion 15 is too large, the protruding height of the proximal side loop portion 11 to the skin side becomes smaller, and the cushioning property of the proximal side loop portion 11 is lowered. On the other hand, if the width C of the joint portion 15 is too small, the base end side loop portion 11 becomes unstable and tends to fall in the width direction.
　前記基端側ループ部１１は、図２に示されるように、前記透液性表面シート３と不透液性裏面シート２との間に吸収体４が介在する本体部分の肌当接面側に配置するのが好ましい。これにより、立体ギャザー１０の肌側への突出高さが高くなり、立体ギャザー１０の先端と肌との密着性が向上できる。また、図示しないが、前記立体ギャザー１０は、前記本体部分より幅方向外側の透液性表面シート３の肌当接面側に配置してもよい。この場合、吸収体４の厚み分だけ肌側への突出高さは低くなるが、吸収体４が体液を吸収できる面積を広くとることができ、吸収体４を有効活用できるようになる。 As shown in FIG. 2, the proximal end side loop portion 11 is the skin contact surface side of the main body portion in which the absorbent body 4 is interposed between the liquid permeable top sheet 3 and the liquid impermeable back sheet 2. It is preferable to arrange in. Thereby, the protrusion height to the skin side of the solid gather 10 becomes high, and the adhesiveness of the front-end | tip of the solid gather 10 and skin can be improved. Further, although not shown, the solid gather 10 may be disposed on the skin contact surface side of the liquid-permeable top sheet 3 in the width direction outside of the main body portion. In this case, although the height of the protrusion on the skin side decreases by the thickness of the absorber 4, the area where the absorber 4 can absorb the body fluid can be widened, and the absorber 4 can be effectively used.
　前記自由端側ループ部１２は、接合部１６によって基端側ループ部１１に接合されている。前記接合部１６は、前記立体ギャザー１０が肌側に突出する生理用ナプキン１の長手方向の区間において、生理用ナプキン１の長手方向に沿う所定幅を有する直線的な帯状又は線状に形成されている。前記接合部１６の幅Ｄは、自由端側ループ部１２の幅Ｂに対する割合Ｄ／Ｂが１０～５０％、特に１５～３０％であるのが好ましい。前記接合部１６の幅Ｄが大き過ぎると、後段で詳述する基端側ループ部１１と自由端側ループ部１２との間に形成される括れ部１７の深さが小さくなり、その効果が十分に発揮できなくなる。また、前記接合部１６の幅Ｄが小さすぎると、自由端側ループ部１２が不安定となり、幅方向に倒れやすくなる。 The free end side loop portion 12 is joined to the proximal end side loop portion 11 by a joining portion 16. The joint portion 16 is formed in a linear band or linear shape having a predetermined width along the longitudinal direction of the sanitary napkin 1 in a section in the longitudinal direction of the sanitary napkin 1 in which the three-dimensional gather 10 protrudes to the skin side ing. The width D of the joint portion 16 is preferably such that the ratio D / B to the width B of the free end side loop portion 12 is 10 to 50%, particularly 15 to 30%. If the width D of the joint portion 16 is too large, the depth of the constricted portion 17 formed between the proximal end loop portion 11 and the free end side loop portion 12, which will be described in detail later, becomes small. It can not be demonstrated enough. If the width D of the joint portion 16 is too small, the free end side loop portion 12 becomes unstable and tends to fall in the width direction.
　前記接合部１６は、前記基端側ループ部１１を構成するサイド不織布７が二重に折り返された二重シート部と、前記自由端側ループ部１２を構成するサイド不織布８が二重に折り返された二重シート部とが対向する位置に形成するのがよい。より好ましくは、前記基端側ループ部１１を構成するサイド不織布７の二重シート部と、前記自由端側ループ部１２を構成するサイド不織布８の二重シート部とがそれぞれ１回巻回されて二重シート端部が内面に接合された接合部同士が対向する位置に形成するのが好ましい。これにより、基端側ループ部１１と自由端側ループ部１２との間で反発性が高まり、立体ギャザー１０全体としてのクッション性が向上できる。 In the bonding portion 16, a double sheet portion in which the side non-woven fabric 7 constituting the base end side loop portion 11 is double-folded and a side non-woven fabric 8 constituting the free end side loop portion 12 is double-folded It is preferable to form in the position where the double sheet | seat part with which it was made opposes. More preferably, the double sheet portion of the side non-woven fabric 7 constituting the proximal end side loop portion 11 and the double sheet portion of the side non-woven fabric 8 constituting the free end side loop portion 12 are wound once. It is preferable to form in the position where the junction part which the double sheet | seat edge part joined to the inner surface opposes. Thereby, the resilience is enhanced between the proximal end loop portion 11 and the free end side loop portion 12, and the cushioning properties of the solid gather 10 as a whole can be improved.
　本第１形態例に係る立体ギャザー１０において、前記基端側ループ部１１と自由端側ループ部１２とは、生理用ナプキン１の厚み方向（上下方向）に隣接して配置されている。これにより、前記自由端側ループ部１２は、前記基端側ループ部１１より肌当接面側に突出し、生理用ナプキン１の装着時に肌との接触面を構成するようになり、立体ギャザー１０の肌側への突出高さを高くでき、着用者の鼠蹊部へのフィット性が向上できる。生理用ナプキン１の装着時には、前記自由端側ループ部１２のみが肌と接触し、前記基端側ループ部１１は、肌と接触せず、専ら、自由端側ループ部１２を非肌側から肌側へ押し上げる役割を担っている。 In the three-dimensional gather 10 according to the first embodiment, the proximal end loop portion 11 and the free end side loop portion 12 are disposed adjacent to each other in the thickness direction (vertical direction) of the sanitary napkin 1. As a result, the free end side loop portion 12 protrudes from the proximal end side loop portion 11 to the skin contact surface side, and forms a contact surface with the skin when the sanitary napkin 1 is attached, and the three-dimensional gather 10 The protrusion height to the skin side can be increased, and the fit to the buttocks of the wearer can be improved. When the sanitary napkin 1 is attached, only the free end side loop portion 12 contacts the skin, and the proximal end loop portion 11 does not contact the skin, and the free end side loop portion 12 is exclusively from the non-skin side It plays a role of pushing up to the skin side.
　前記立体ギャザー１０の起立高さ（透液性表面シート３の肌側面から生理用ナプキン１の厚み方向に突出する高さ）は、３０～５０ｍｍ、好ましくは３５～４０ｍｍとするのがよい。これは、従来の断面中空のループ状立体ギャザーの起立高さに対して約２倍の高さとなる。 The standing height of the solid gather 10 (the height projecting in the thickness direction of the sanitary napkin 1 from the skin side surface of the liquid-permeable surface sheet 3) is 30 to 50 mm, preferably 35 to 40 mm. This is about twice as high as the standing height of a conventional hollow hollow solid gatherer.
　前記自由端側ループ部１２は、前記基端側ループ部１１に対して、幅方向外側に若干偏倚した位置に接合するのが好ましい。これにより、立体ギャザーの起立方向が肌側に向けて幅方向外側に傾斜するようになり、自由端側ループ部１２が着用者の鼠蹊部にフィットしやすくなるとともに、立体ギャザー１０が肌側に向けて拡開するように形成されるため、身体を伝って幅方向外側に向けて流れる体液の流れを立体ギャザー１０によって塞き止めやすくなる。前記立体ギャザー１０の傾斜角αは、図４に示されるように、基端側ループ部１１の中心部及び自由端側ループ部１２の中心部を通る立体ギャザー１０の中心線Ｌと、生理用ナプキン１の厚み方向線Ｎ（透液性表面シート３の表面に対する垂線）との成す角αが、１０～３０°であるのが好ましい。なお、前記接合部１６は、前記立体ギャザー１０の中心線Ｌを通る位置に形成されている。 The free end side loop portion 12 is preferably joined to the proximal end side loop portion 11 at a position slightly biased outward in the width direction. As a result, the standing direction of the solid gathers inclines outward in the width direction toward the skin side, and the free end side loop portion 12 easily fits to the buttocks of the wearer, and the solid gather 10 faces the skin side Since it is formed to expand toward the body, the flow of body fluid flowing outward in the width direction along the body can be easily blocked by the solid gathers 10. The inclination angle α of the solid gather 10 is, as shown in FIG. 4, a center line L of the solid gather 10 passing through the central portion of the proximal end loop portion 11 and the central portion of the free end side loop portion 12 The angle α formed with the thickness direction line N of the napkin 1 (perpendicular to the surface of the liquid-permeable top sheet 3) is preferably 10 to 30 °. The joint portion 16 is formed at a position passing through the center line L of the solid gather 10.
　前記基端側ループ部１１と自由端側ループ部１２との間には、立体ギャザー１０のナプキン中央側の外形線が括れた括れ部１７が形成されている。前記括れ部１７は、それぞれ断面略円形に形成された基端側ループ部１１と自由端側ループ部１２との接続部分に形成された谷間部分であり、立体ギャザー１０が延びる方向に沿って連続して形成されている。前記括れ部１７の底部には前記接合部１６が設けられることによって、基端側ループ部１１と自由端側ループ部１２とが接合され、この部分からの体液の漏れが防止できるようになる。本立体ギャザー１０では、前記括れ部１７が形成されているため、この括れ部１７にドロッとした塊状の経血などが入り込むことによって立体ギャザー１０より幅方向外側への体液の流れが塞き止められ、体液の横漏れがより確実に防止できるようになっている。 Between the base end side loop portion 11 and the free end side loop portion 12, there is formed a constricted portion 17 in which the outline of the center side of the napkin of the solid gather 10 is constricted. The constricted portion 17 is a valley portion formed in the connection portion between the proximal end loop portion 11 and the free end side loop portion 12 each formed in a substantially circular cross section, and is continuous along the direction in which the solid gather 10 extends. It is formed. By providing the joint portion 16 at the bottom of the constricted portion 17, the proximal end loop portion 11 and the free end side loop portion 12 are joined, and leakage of body fluid from this portion can be prevented. In the present three-dimensional gather 10, since the constricted part 17 is formed, the flow of body fluid from the three-dimensional gather 10 to the width direction outer side is blocked by the entry of massive menstrual blood or the like dropped into the constricted part 17. Side leakage of body fluid can be prevented more reliably.
　前記基端側ループ部１１の幅Ａ及び自由端側ループ部１２の幅Ｂはそれぞれ、１５～２５ｍｍ、好ましくは１７～２０ｍｍとするのがよい。前記幅Ａ及びＢは、同じ寸法で形成してもよいし、異なる寸法で形成してもよい。異なる寸法で形成する場合には、基端側ループ部１１の幅Ａを相対的に大きくして立体ギャザー１０の安定性を高めるようにしてもよいし、自由端側ループ部１２の幅Ｂを相対的に大きくして肌面との接触面積を増加させ更に漏れ防止を図るようにしてもよい。 The width A of the proximal end loop portion 11 and the width B of the free end side loop portion 12 may be 15 to 25 mm, preferably 17 to 20 mm. The widths A and B may be formed in the same dimension or may be formed in different dimensions. When forming with different dimensions, the width A of the proximal end loop portion 11 may be relatively increased to enhance the stability of the solid gather 10, and the width B of the free end side loop portion 12 may be It may be made relatively large to increase the contact area with the skin surface to further prevent leakage.
　なお、図２及び図３に示される例では、サイド不織布７，８の外方側端縁はそれぞれ、生理用ナプキン１の側端縁まで延びているが、少なくとも一方側のサイド不織布が生理用ナプキン１の側端縁まで延在していればよく、他方側のサイド不織布は幅方向の中間位置までとし、生理用ナプキン１の側端縁まで延在させなくてもよい。 In the example shown in FIGS. 2 and 3, the outer side edges of the side non-woven fabrics 7, 8 respectively extend to the side edge of the sanitary napkin 1, but at least one side non-woven fabric is for menstruation It suffices to extend to the side edge of the napkin 1, and the other side non-woven fabric may not be extended to the side edge of the sanitary napkin 1 up to the middle position in the width direction.
　本第１形態例において、前記基端側ループ部１１及び自由端側ループ部１２は、それぞれ別体のサイド不織布７，８によって構成されている。これによって、前記接合部１６の位置を調整することで、基端側ループ部１１に対する自由端側ループ部１２の接合位置を任意に設定することができる。また、前記サイド不織布７，８として、親水性や撥水性などの同じ性質を備えたものを用いてもよいし、異なる性質を備えたものを用いてもよい。異なる性質を備えたものとしては、例えば、基端側ループ部１１を親水性とし、自由端側ループ部１２を撥水性とすることによって、自由端側ループ部１２で塞き止めた体液を基端側ループ部１１を通じて吸収体４側に素早く拡散させることができるようになるし、これとは逆に、基端側ループ部１１を撥水性とし、自由端側ループ部１２を親水性とすることによって、自由端側ループ部１２で身体を伝う体液を立体ギャザー１０に素早く吸収しつつ、基端側ループ部１１で生理用ナプキン１の表面を幅方向外側に向けて流れる体液が立体ギャザー１０に吸収されて肌側に拡散するのが防止できるようになる。 In the first embodiment, the proximal end loop portion 11 and the free end side loop portion 12 are respectively configured by separate side non-woven fabrics 7 and 8. Thus, by adjusting the position of the joint portion 16, the joint position of the free end side loop portion 12 with respect to the proximal end side loop portion 11 can be set arbitrarily. Further, as the side non-woven fabrics 7 and 8, those having the same properties such as hydrophilicity and water repellency may be used, or those having different properties may be used. As to those having different properties, for example, the proximal end side loop portion 11 is made hydrophilic and the free end side loop portion 12 is made water repellent, so that the body fluid blocked by the free end side loop portion 12 is used as a base. It becomes possible to diffuse quickly to the absorber 4 side through the end side loop portion 11, and conversely, the base end side loop portion 11 is made water repellent and the free end side loop portion 12 is made hydrophilic. Thus, while the bodily fluid transmitting the body in the free end side loop portion 12 is quickly absorbed into the solid gatherer 10, the bodily fluid flowing outward in the width direction on the surface of the sanitary napkin 1 in the proximal end side loop portion 11 forms the solid gather 10 Can be absorbed and spread to the skin side.
　前記糸状弾性伸縮部材１３、１４としては、通常使用されるスチレン系ゴム、オレフィン系ゴム、ウレタン系ゴム、エステル系ゴム、ポリウレタン、ポリエチレン、ポリスチレン、スチレンブタジエン、シリコン、ポリエステル等の発泡体やフィルムなど種々のものを用いることができる。 The thread-like elastic stretchable members 13 and 14 are usually used styrenic rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, polyester, etc. Various ones can be used.
　前記糸状弾性伸縮部材１３、１４としては、太さは、３００～１０００dtexが好ましく、４００～５５０dtexがより好ましい。固定時の伸長率は１４０～３５０％が好ましく、２００～３００％がより好ましい。なお、前記「伸長率」は自然長を１００％としたときの値を意味する。 The thickness of the thread-like elastic stretchable members 13 and 14 is preferably 300 to 1000 dtex, and more preferably 400 to 550 dtex. The elongation at fixing is preferably 140 to 350%, more preferably 200 to 300%. The “expansion rate” means a value when the natural length is 100%.
　前記基端側ループ部１１に配置される糸状弾性伸縮部材１３と、前記自由端側ループ部１２に配置される糸状弾性伸縮部材１４とは、同じ収縮力でもよいし、異なる収縮力であってもよい。異なる収縮力とした場合、自由端側ループ部１２に配置される糸状弾性伸縮部材１４の方が、基端側ループ部１１に配置される糸状弾性伸縮部材１３より大きな収縮力を有するのが好ましい。これにより、自由端側ループ部１２がより強い力で肌側に起立するようになり、肌との密着性を高めることができる。 The thread-like elastic stretchable member 13 disposed in the proximal end side loop portion 11 and the thread-like elastic stretchable member 14 disposed in the free end side loop portion 12 may have the same contraction force or different contraction forces. It is also good. In the case of different contraction forces, it is preferable that the thread-like elastic stretchable member 14 disposed in the free end side loop portion 12 have a greater contraction force than the thread-like elastic stretch member 13 disposed in the base end side loop portion 11 . Thereby, the free end side loop part 12 comes to stand on the skin side by stronger force, and it can improve adhesiveness with skin.
　前記糸状弾性伸縮部材１３、１４はそれぞれ、基端側ループ部１１及び自由端側ループ部１２の断面を、生理用ナプキン１の厚み方向に対して肌側と非肌側との２つに分割したとき、肌側半分の領域に配置するのが好ましい。これにより、基端側ループ部１１及び自由端側ループ部１２が断面中空のループ状に起立しやすくなる。 The thread-like elastic stretchable members 13 and 14 respectively divide the cross sections of the proximal end loop portion 11 and the free end side loop portion 12 into two, the skin side and the non-skin side with respect to the thickness direction of the sanitary napkin 1 When doing, it is preferable to arrange in the area | region of the skin side half. As a result, the proximal end loop portion 11 and the free end side loop portion 12 can be easily erected in the form of a hollow loop.
＜第２形態例＞
　次いで、第２形態例に係る生理用ナプキン１Ａについて、図５に基づいて説明する。第２形態例に係る生理用ナプキン１Ａでは、上記第１形態例と比較して、立体ギャザー１０Ａの形態が異なっている。 Second Embodiment
Next, a sanitary napkin 1A according to a second embodiment will be described based on FIG. The sanitary napkin 1A according to the second embodiment is different from the first embodiment in the form of the three-dimensional gather 10A.
　第２形態例に係る立体ギャザー１０Ａは、基端側ループ部１１と自由端側ループ部１２とは、生理用ナプキン１の幅方向に隣接して配置されている。すなわち、自由端側ループ部１２が、基端側ループ部１１の幅方向外側に隣接して設けられ、生理用ナプキン１の装着時には、前記自由端側ループ部１２及び基端側ループ部１１が両方とも肌との接触面を構成している。ただし、自由端側ループ部１２は、基端側ループ部１１のみに接合され、透液性表面シート３には接合されていないため、自由端側ループ部１２の方が基端側ループ部１１より若干肌側に突出しており、これにより、立体ギャザー１０Ａ全体としては基端側ループ部１１の幅方向外側の斜め上方に自由端側ループ部１２が傾斜して配置されるようになる。 In the solid gather 10A according to the second embodiment, the proximal end loop portion 11 and the free end side loop portion 12 are disposed adjacent to each other in the width direction of the sanitary napkin 1. That is, the free end side loop portion 12 is provided adjacent to the width direction outer side of the proximal end side loop portion 11, and when the sanitary napkin 1 is attached, the free end side loop portion 12 and the proximal end side loop portion 11 Both constitute the contact surface with the skin. However, since the free end side loop portion 12 is joined only to the proximal end side loop portion 11 and is not joined to the liquid permeable surface sheet 3, the free end side loop portion 12 is the proximal end side loop portion 11. The free end side loop portion 12 is disposed obliquely to the upper side in the width direction outside of the proximal end side loop portion 11 as a whole of the three-dimensional gather 10A.
　これによって、第２形態例に係る立体ギャザー１０Ａでは、幅方向に対して基端側ループ部１１（内側）と自由端側ループ部１２（外側）の２段のループ状立体ギャザーによって体液が塞き止められるため、横漏れが確実に防止できるようになる。特に、幅方向外側の自由端側ループ部１２は、透液性表面シート３に接合されずに、基端側ループ部１１のみに接合されているため、肌側への可動範囲が大きくなり、肌面に確実にフィットできるようになる。また、基端側ループ部１１と自由端側ループ部１２とが幅方向外側に向けて肌側に傾斜して配置されることにより、生理用ナプキン１Ａの装着時に股間部の形状に沿いやすくなる。 Thus, in the solid gather 10A according to the second embodiment, the body fluid is blocked by the two-stage loop solid gathers of the proximal end loop portion 11 (inner side) and the free end side loop portion 12 (outer side) in the width direction. Because it is locked, it is possible to prevent side leakage reliably. In particular, since the free end side loop portion 12 in the width direction outer side is joined only to the proximal end side loop portion 11 without being joined to the liquid-permeable surface sheet 3, the movable range to the skin side becomes large. You will be able to fit on the skin surface surely. Further, the proximal end side loop portion 11 and the free end side loop portion 12 are arranged to be inclined toward the skin side toward the outer side in the width direction, so that it becomes easy to conform to the shape of the crotch when wearing the sanitary napkin 1A. .
　第２形態例に係る立体ギャザー１０Ａでは、立体ギャザー１０Ａの傾斜角α（図４参照。）は、基端側ループ部１１の中心部及び自由端側ループ部１２の中心部を通る立体ギャザー１０の中心線Ｌと、生理用ナプキン１Ａの厚み方向線Ｎとの成す角αが、１０～３０°であるのが好ましい。 In the solid gather 10A according to the second embodiment, the inclination angle α (see FIG. 4) of the solid gather 10A is a solid gather 10 that passes through the central portion of the proximal end loop portion 11 and the central portion of the free end side loop portion 12. Preferably, an angle α between the center line L of and the thickness direction line N of the sanitary napkin 1A is 10 to 30 °.
　本第２形態例に係る立体ギャザー１０Ａでは、基端側ループ部１１と自由端側ループ部１２との間に形成される括れ部１７は、前記立体ギャザー１０Ａの肌側の外形線が括れた部分によって形成されている。 In the solid gather 10A according to the second embodiment, the neck portion 17 formed between the base end side loop portion 11 and the free end side loop portion 12 has the outline of the skin side of the solid gather 10A narrowed. It is formed by a part.
＜第３形態例＞
　上記第１形態例及び第２形態例に係る生理用ナプキン１、１Ａでは、基端側ループ部１１と自由端側ループ部１２とをそれぞれ別体のサイド不織布７，８で構成していたが、第３形態例に係る生理用ナプキン１Ｂでは、図６に示されるように、これら基端側ループ部１１及び自由端側ループ部１２を連続する１枚のサイド不織布７Ｂによって構成している点で相違する。 <Third Embodiment>
In the sanitary napkins 1 and 1A according to the first embodiment and the second embodiment, the base end side loop portion 11 and the free end side loop portion 12 are respectively constituted by the side nonwoven fabrics 7 and 8 which are separate bodies. In the sanitary napkin 1B according to the third embodiment, as shown in FIG. 6, the base end side loop portion 11 and the free end side loop portion 12 are constituted by one continuous non-woven fabric 7B. It is different.
　図７に基づいて詳細に説明すると、図７は、第３形態例に係る立体ギャザー１０Ｂを吸収体４側に折り畳んだ状態の断面図である。前記立体ギャザー１０Ｂは、生理用ナプキン１の側方側から中心側方向に延在したサイド不織布７Ｂが二重に折り返されるとともに、この二重シート内部の適宜の位置に両端または長手方向の適宜の位置が固定された複数本の糸状弾性伸縮部材１３、１３…が配設され、かつ前記二重シートが生理用ナプキン１の中心側位置で非肌側の側方側方向に折り返される第１折り返し部２０と、この第１折り返し部２０に連続して側方側位置で非肌側の中心側方向に折り返される第２折り返し部２１と、この第２折り返し部２１に連続して中心側位置で非肌側の側方側方向にに折り返される第３折り返し部２２とによって四つ折りとされ、上層側から順に第１二重シート部２３、第２二重シート部２４、第３二重シート部２５、第４二重シート部２６を有し、前記第２折り返し部の近傍において、前記第１二重シート部２３と第２二重シート部２４とが接合される接合部２７が形成されるとともに、前記第３二重シート部２５と第４二重シート部２６とが接合される接合部２８が形成され、かつ前記第２二重シート部２４と第３二重シート部２５とが接合される接合部２９が形成されることにより、起立状態で、図６に示されるように、基端側ループ部１１と自由端側ループ部１２とを有する２段式のループ状立体ギャザーが形成されるようになる。なお、上記形態例では二重シートを非肌側に折り返して四つ折りとしていたが、肌側に折り返すことによって四つ折りとしてもよい。また、前記第２二重シート部２４と第３二重シート部２５との接合部は、基端側ループ部１１と自由端側ループ部１２との接合部１６を構成する。 Describing in detail based on FIG. 7, FIG. 7 is a cross-sectional view of a state in which the solid gather 10B according to the third embodiment is folded to the absorber 4 side. In the solid gather 10B, the side non-woven fabric 7B extending in the center-side direction from the side of the sanitary napkin 1 is double-folded, and both ends or an appropriate length direction in an appropriate position inside the double sheet. A plurality of thread-like elastic stretchable members 13, 13 ... fixed in position are disposed, and the double sheet is folded back in the side direction on the non-skin side at the center side position of the sanitary napkin 1 A portion 20, a second folded portion 21 that is folded back toward the non-skin central side at a side side position continuously to the first folded portion 20, and a center side position that is contiguous to the second folded portion 21 The first double sheet portion 23, the second double sheet portion 24, and the third double sheet portion are sequentially folded in four from the upper layer side by the third fold-back portion 22 folded back to the side side direction on the non-skin side 25, fourth double seat portion 26 And a joint portion 27 to which the first double sheet portion 23 and the second double sheet portion 24 are joined is formed in the vicinity of the second folded portion, and the third double sheet portion 25 is formed. And the fourth double sheet portion 26 is formed with the joined portion 28 formed, and the second double sheet portion 24 and the third double sheet portion 25 are formed with the joined portion 29 formed. Thus, in the upright state, as shown in FIG. 6, a two-stage loop-shaped solid gather having a proximal end loop portion 11 and a free end side loop portion 12 is formed. In the above embodiment, the double sheet is folded back to the non-skin side and is folded in four, but may be folded in four by folding back to the skin side. Further, a joint portion between the second double sheet portion 24 and the third double sheet portion 25 constitutes a joint portion 16 between the proximal end loop portion 11 and the free end side loop portion 12.
　また、図６及び図７に示されるように、第１折り返し部２０と第３折り返し部２２の位置をほぼ同じにすることで、基端側ループ部１１と自由端側ループ部１２とが上下方向に重なる立体ギャザー１０Ｂが形成されるようになる。また、第３折り返し部２２の位置を第１折り返し部２０より中心側にすることで、基端側ループ部１１と自由端側ループ部１２とが幅方向に連なる立体ギャザー１０Ｂが形成されるようになる。 Further, as shown in FIGS. 6 and 7, by making the positions of the first folded portion 20 and the third folded portion 22 substantially the same, the base end side loop portion 11 and the free end side loop portion 12 are vertically arranged. Solid gathers 10B overlapping in the direction are formed. Further, by setting the position of the third folded portion 22 to be closer to the center than the first folded portion 20, a solid gather 10B in which the base end side loop portion 11 and the free end side loop portion 12 are connected in the width direction is formed. become.
　このように、基端側ループ部１１及び自由端側ループ部１２を、１枚の不織布で構成することによって、部品点数を少なくでき、製造コストを抑えることができるとともに、基端側ループ部１１に隣接して自由端側ループ部１２を形成しやすくなる。 As described above, by forming the proximal end side loop portion 11 and the free end side loop portion 12 with a single non-woven fabric, the number of parts can be reduced, and the manufacturing cost can be suppressed. It becomes easy to form the free end side loop part 12 adjacent to.
　１…生理用ナプキン、２…不透液性裏面シート、３…透液性表面シート、４…吸収体、５…被包シート、６…中高部、７・８…サイド不織布、９…エンボス溝、１０…立体ギャザー、１１…基端側ループ部、１２…自由端側ループ部、１３・１４…糸状弾性伸縮部材、１５・１６…接合部、１７…括れ部 DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impermeable back sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorbent body, 5 ... Encapsulation sheet, 6 ... Middle high part, 7. 8 side nonwoven fabric, 9 ... Embossed groove 10: solid gather, 11: proximal end loop portion, 12: free end side loop portion, 13: 14: thread-like elastic stretchable member, 15: 16: joint portion, 17: constricted portion

Claims (6)

  1. 　透液性表面シートの肌当接面側の両側部にそれぞれ、長手方向に沿って肌側に突出する立体ギャザーが形成された吸収性物品において、
    　前記立体ギャザーは、前記透液性表面シートの肌当接面に接合され、断面が中空のループ状に形成された基端側ループ部と、前記基端側ループ部に接合され、断面が中空のループ状に形成された自由端側ループ部とを備えていることを特徴とする吸収性物品。     In the absorbent article in which the solid gathers which are projected to the skin side along the longitudinal direction are formed on both sides of the skin contact surface side of the liquid-pervious surface sheet,
    The solid gathers are joined to the skin contact surface of the liquid-permeable surface sheet, and are joined to the proximal end loop portion formed in a hollow loop shape in cross section and the proximal end loop portion, and the cross section is hollow And a free end side loop portion formed in the form of a loop.
  2. 　前記基端側ループ部と自由端側ループ部とは、吸収性物品の厚み方向に隣接して配置されている請求項１記載の吸収性物品。 The absorbent article according to claim 1, wherein the proximal end loop portion and the free end side loop portion are disposed adjacent to each other in the thickness direction of the absorbent article.
  3. 　前記基端側ループ部と自由端側ループ部とは、吸収性物品の幅方向に隣接して配置されている請求項１記載の吸収性物品。 The absorbent article according to claim 1, wherein the proximal loop portion and the free end loop portion are disposed adjacent to each other in the width direction of the absorbent article.
  4. 　前記基端側ループ部と自由端側ループ部との間に、前記立体ギャザーの吸収性物品中央側の外形線又は肌側の外形線が括れた括れ部が形成されている請求項１～３いずれかに記載の吸収性物品。 4. The neck portion in which the outline of the center side of the absorbent article or the outline of the skin side of the solid gathers is formed between the proximal end loop portion and the free end side loop portion. The absorbent article in any one.
  5. 　前記基端側ループ部及び自由端側ループ部は、それぞれ別体の不織布によって構成されている請求項１～４いずれかに記載の吸収性物品。 The absorbent article according to any one of claims 1 to 4, wherein the proximal end loop portion and the free end side loop portion are respectively formed of separate non-woven fabrics.
  6. 　前記基端側ループ部及び自由端側ループ部は、１枚の不織布によって構成されている請求項１～４いずれかに記載の吸収性物品。 The absorbent article according to any one of claims 1 to 4, wherein the proximal end loop portion and the free end side loop portion are constituted by a single non-woven fabric.
PCT/JP2018/027638 2017-07-28 2018-07-24 Absorbent article WO2019022057A1 (en)

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Cited By (1)

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CN113855394A (en) * 2021-09-29 2021-12-31 大途科技(泉州)有限公司 Edge-separating guard and absorbing article using same

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JP7236289B2 (en) * 2019-02-27 2023-03-09 大王製紙株式会社 absorbent article
JP2022154629A (en) * 2021-03-30 2022-10-13 大王製紙株式会社 absorbent article

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WO1995007063A1 (en) * 1993-09-09 1995-03-16 The Procter & Gamble Company Absorptive article
JP2010094269A (en) * 2008-10-16 2010-04-30 Kao Corp Absorbent article
JP2015188542A (en) * 2014-03-27 2015-11-02 王子ホールディングス株式会社 absorbent article

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WO1995007063A1 (en) * 1993-09-09 1995-03-16 The Procter & Gamble Company Absorptive article
JP2010094269A (en) * 2008-10-16 2010-04-30 Kao Corp Absorbent article
JP2015188542A (en) * 2014-03-27 2015-11-02 王子ホールディングス株式会社 absorbent article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113855394A (en) * 2021-09-29 2021-12-31 大途科技(泉州)有限公司 Edge-separating guard and absorbing article using same

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