WO2018003469A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2018003469A1
WO2018003469A1 PCT/JP2017/021595 JP2017021595W WO2018003469A1 WO 2018003469 A1 WO2018003469 A1 WO 2018003469A1 JP 2017021595 W JP2017021595 W JP 2017021595W WO 2018003469 A1 WO2018003469 A1 WO 2018003469A1
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WO
WIPO (PCT)
Prior art keywords
groove
rear end
absorbent article
longitudinal
absorbent
Prior art date
Application number
PCT/JP2017/021595
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
小縄　聡子
Original Assignee
大王製紙株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大王製紙株式会社 filed Critical 大王製紙株式会社
Publication of WO2018003469A1 publication Critical patent/WO2018003469A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means

Definitions

  • the present invention is an absorbent article mainly used for sanitary napkins, octopus sheets, incontinence pads, toiletries, etc., and more specifically, the middle and high parts thickened on the skin side at the center in the width direction of the absorbent body.
  • the present invention relates to an absorbent article in which a pair of left and right squeezing grooves extending substantially in the longitudinal direction of the absorbent article are formed on both sides of the middle and high portions.
  • an absorbent article such as a panty liner, sanitary napkin, incontinence pad, 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
  • an intervening absorber made of cotton-like pulp or the like.
  • Patent Document 1 a pair of first pressing grooves that extend along the product longitudinal direction and are formed by pressing the surface sheet and the absorbent body from the skin contact surface side, and along the product longitudinal direction.
  • a pair of second pressing grooves formed by pressing the top sheet and the absorbent body from the skin contact surface side outside the first pressing groove in the product width direction.
  • the rear ends of the pair of first pressing grooves in the product longitudinal direction are separated from each other, and the absorber is located inside the product width direction and the center in the product longitudinal direction from the second pressing groove.
  • a lower rigidity region having a lower rigidity value than the surrounding rigidity value along the longitudinal direction of the product on the rear side, and the pair of first compressions in the low rigidity region The rear end in the product longitudinal direction of the groove is arranged Absorbent articles there are disclosed.
  • the middle-high part includes a middle-high front part provided in a region including a wearer's body fluid discharge part, a middle-high rear part provided in a region including a wearer's buttocks groove, and the middle-high front part.
  • an absorbent article that is provided in a region that connects the rear part to the middle-high rear part in the front-rear direction of the absorbent article, and that includes a middle-high constricted part in which both side edges are constricted inward.
  • JP 2014-223215 A Japanese Patent No. 5927314
  • the rear end of the middle / high rear part is formed into a tapered shape with a gradually narrowing width toward the rear side of the absorbent article, thereby making it easier to enter the depth of the buttock groove.
  • the compressed grooves are formed on both sides of the middle and high parts, the deformation and twisting of the medium and high absorber when pressure toward the inner side in the width direction acts on the compressed grooves is not considered at all.
  • the squeezing groove is not properly disposed, the fit to the buttock groove is lowered, the body fluid is leaked later, and there is a problem in that the wearing feeling is deteriorated at the time of wearing.
  • the main problem of the present invention is to provide an absorbent article that improves fit to the groin groove, prevents back leakage of body fluids, prevents twisting at the time of wearing, and improves the feeling of wearing.
  • the present invention in an absorbent article in which an absorbent body is interposed between a liquid-permeable top sheet and a liquid-impervious back sheet,
  • the absorbent article has a middle portion in the width direction, at least in the range from the body fluid discharge portion to the rupture portion, and is provided with a medium-high portion of the absorbent that is thickened on the skin side, and absorbent on both sides of the middle-high portion.
  • a pair of left and right squeezing grooves extending substantially in the longitudinal direction of the article are formed, The rear end portion of the compressed groove is separated from the left and right, and the rear end of the middle and high portion is positioned rearward in the longitudinal direction of the absorbent article from the rear end of the compressed groove, and on the extension line of the rear end of the compressed groove
  • An absorbent article is provided in which a rear end portion of the compressed groove is inclined inward in the width direction so that the middle and high portions are present.
  • the rear end of the compressed groove is separated from the left and right, and the rear end of the middle and high portions is located rearward in the longitudinal direction of the absorbent article. That is, the rear end portion of the middle and high portions is provided so as to protrude rearward from the separation portion at the rear end of the compressed groove.
  • the rear-end part of a pressing groove inclines in the width direction inner side so that the said middle-high part exists on the extension line of the rear-end of the said pressing groove. For this reason, when pressure is applied from the outer side in the width direction toward the inner side during mounting, in the present absorbent article, the rear end portions of the pressing grooves are separated from each other left and right, so that the left and right pressing grooves are separated from each other.
  • the pressure from both sides can be efficiently transmitted to the absorber in the center in the width direction, and the absorber in the center in the width direction tends to rise toward the skin side.
  • the force acting so that the separation width between the left and right compressed grooves narrows acts along the direction in which the extension line of the rear end of the compressed groove extends, but in the present absorbent article, the extension of the rear end of the compressed groove Since there is a middle-high part on the line, even if the pressure applied from both sides is not uniform, the force from the rear end of the squeezing groove acts on the area that has been stiffened by the middle-high part. The body bulges toward the skin without twisting, making it easier to fit in the buttocks. Therefore, the back leakage of body fluid can be prevented and the wearing feeling is improved.
  • the middle-high portion is formed in a tapered shape in which a rear portion corresponding to the buttocks groove of the wearer is gradually narrowed toward the rear of the absorbent article.
  • An absorbent article is provided.
  • the middle and high part corresponding to the buttocks groove of the wearer is formed in a tapered shape toward the rear, the middle and high part is formed in the part separated from the left and right of the rear end of the compressed groove. While becoming easy to arrange
  • an angle formed between the extension line and the outline of the middle-high portion extending backward from a point where the extension line intersects the outline of the middle-high portion is 100 to 170 °.
  • An absorbent article according to any one of Items 1 and 2 is provided.
  • the pressure from both sides acting along the squeezing groove is effective at the middle-high part. You will be able to accept it.
  • the left and right separation distance of the rear end portion of the compressed groove is within a predetermined range, thereby preventing twisting at the time of mounting and improving the fitting property to the buttocks groove.
  • the pressure from the heel portion directed from the outside in the width direction to the inside is formed by forming the squeezing groove of the portion corresponding to the buttock of the wearer with higher rigidity than the squeezing groove of the other portion. It becomes easy to transmit to the absorber of a direction center part, and the fitting property to a buttock groove
  • channel can be improved by raising the width direction center part higher on the skin side.
  • the groove width is relatively increased, the area of the high-pressure squeezing part is increased, the distance between the high-pressure squeezing parts is narrowed to increase the density of the high-pressure squeezing part, etc. Any one or a combination of two or more can be employed.
  • the fit to the buttock groove can be improved, leakage of bodily fluids can be prevented, twisting at the time of wearing can be prevented, and the wearing feeling can be improved.
  • FIG. 3 is a view taken along the line III-III in FIG. 1. It is a top view which shows the positional relationship of the middle-high part 6 and the rear side longitudinal direction pressing groove 12. FIG. It is a top view which shows the state of the pressure which acts on the middle-high part 6 rear-end part.
  • (A), (B) is a top view which shows the state of the pressure which acts on the mid-high part rear end part of the conventional sanitary napkin.
  • the sanitary napkin 1 is a liquid-impervious back sheet 2 made of a polyethylene sheet or the like, and menstrual blood or urine (hereinafter collectively referred to as body fluid). ) And the absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3 and both sides of the skin contact surface side. A side non-woven fabric 7 provided over the entire length along the direction, and in the periphery of the absorbent body 4, the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 at the upper and lower edges.
  • the liquid-impervious back surface whose outer edge portion is joined by a bonding means such as an adhesive such as hot melt, a heat seal, an ultrasonic seal or the like, and that both side edge portions extend laterally from the absorbent body 4.
  • Sheet 2 and side nonwoven fabric 7 Adhesive or heat sealing, such as Ttomeruto, by being bonded by bonding means such as ultrasonic sealing, in which the flap portion where the absorber is not interposed is formed.
  • the absorbent body 4 is surrounded by a wrapping sheet 5 made of crepe paper or nonwoven fabric in order to maintain the shape of the absorbent body 4 and improve the diffusibility. It does not have to be provided.
  • a second sheet made of a hydrophilic non-woven fabric 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. .
  • the liquid-impervious back sheet 2 is made of a sheet material having at least water shielding properties such as polyethylene, but it is desirable to use a material having moisture permeability from the viewpoint of preventing stuffiness.
  • the water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used.
  • One or more adhesive layers are formed on the non-skin side surface (outer surface) of the liquid-impermeable back sheet 2 along the longitudinal direction of the napkin, and the sanitary napkin 1 is attached to the body when worn on the body. It is designed to be fixed to underwear.
  • the liquid-permeable surface sheet 3 is preferably a porous or non-porous nonwoven fabric or a porous plastic sheet.
  • material fibers constituting the nonwoven fabric in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used.
  • a nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of bulkiness and high compression recovery.
  • the non-woven fiber may be either a long fiber or a short fiber, but preferably a short fiber is used in order to give a towel texture.
  • an olefin 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 having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be suitably used.
  • the absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is composed of, for example, cotton-like pulp and a water-absorbing polymer.
  • the water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as granular powder.
  • the pulp include chemical fibers obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate. It is preferably 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.
  • synthetic fiber for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be a mixture.
  • a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can be used.
  • hydrophobic fiber it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.
  • a middle-high portion 6 of the absorbent body thickened on the skin side is formed on the skin side surface of the absorbent body 4.
  • the absorbent body 4 and the middle / high portion 6 may be separately manufactured and then stacked in an assembly process, or may be integrally formed by three-dimensionally stacking the absorbent body. Moreover, it is good also as a two-stage fiber structure which accumulates the middle-high part 6 on the upper stage of the absorber 4. FIG. The middle and high portions 6 will be described in detail later.
  • the width dimension of the liquid-permeable surface sheet 3 is slightly longer than the width of the absorbent body 4 so as to cover the absorbent body 4 as shown in the cross-sectional views of FIGS. 2 and 3.
  • a side nonwoven fabric 7 constituted by using a nonwoven fabric material subjected to appropriate water repellent treatment or hydrophilic treatment is disposed.
  • the side nonwoven fabric 7 can be made of natural fiber, synthetic fiber, regenerated fiber, or the like and formed by an appropriate processing method.
  • the side nonwoven fabric 7 eliminates the feeling of stickiness and prevents stuffiness.
  • non-woven fabric with reduced basis weight and air permeability.
  • a nonwoven fabric prepared with a basis weight of 13 to 23 g / m 2 , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. for reliably preventing the passage of body fluids.
  • a water repellent nonwoven fabric coated with is preferably used.
  • the side nonwoven fabric 7 is bonded by hot melt or the like over the range from the predetermined inner position to the outer edge of the liquid-impermeable back sheet 2 from the width direction intermediate portion.
  • the flap part which the absorber 4 does not interpose on the both sides of the absorber 4 by the laminated sheet part of these side nonwoven fabrics 7 and the liquid-impermeable back sheet 2 is formed.
  • the flap portion forms a pair of left and right wing-shaped flaps W, W at the absorber side portion position substantially corresponding to the body fluid discharge portion H, and the hip hold flaps W B , W at the hip side (rear side) position from this. B may be formed.
  • wing-shaped flaps W, W and hip hold flaps W B respectively pressure-sensitive adhesive layer on the outer surface side of the W B (not shown) is provided, proximal to the time of mounting with respect to shorts, the wing-shaped flaps W, and W 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 inner side portion of the side nonwoven fabric 7 is folded substantially double, and one or a plurality of both ends or appropriate positions in the longitudinal direction are fixed to the middle portion in the height direction inside the double sheet.
  • the three elastic elastic members 9, 9... are arranged in a state where both ends or appropriate positions in the longitudinal direction are fixed.
  • the double sheet portion is bonded to the absorber 4 side in a state of being folded once outward and laminated, as shown in FIG.
  • Straight three-dimensional gathers BS and BS standing on the surface side while inclining are formed in a pair of left and right.
  • the middle height 6 of the absorbent body thickened on the skin side is at least in a range from the body fluid discharge part H to the rupture part of the absorbent body 4.
  • the middle-high portion 6 is adjacent to the skin side surface of the absorbent body 4 and is disposed at the center in the width direction of the absorbent body 4, and is formed with a width dimension and a longitudinal dimension smaller than the absorbent body 4. If the thickness of the middle-high portion 6 is too thick, the rigidity increases and the adhesion to the body decreases. If the thickness is too thin, the adhesion to the body fluid discharge portion H decreases, so that the thickness is 3 to 25 mm, preferably 5 to 18 mm. It is good.
  • the total basis weight of the middle high portion 6 where the middle high portion 6 is disposed and the absorbent body 4 is preferably 400 to 900 g / m 2 , particularly 600 to 800 g / m 2 .
  • the middle-high portion 6 includes a middle-high front portion 6 ⁇ / b> A provided in a region including the wearer's body fluid discharge portion H and a middle-high rear portion 6 ⁇ / b> B provided in a region including the wearer's buttocks groove.
  • a middle and high front part 6A and a middle and rear part 6B are provided in a region connecting the front and rear directions of the napkin, and are composed of a middle and high neck part 6C in which both side edges are bound inward.
  • the middle-high front portion 6A is formed in a region including the body fluid discharge portion H of the wearer, specifically, a region slightly longer on the front side and the rear side than the body fluid discharge portion H.
  • the middle-high front portion 6A is formed in a vertically long shape in the front / rear direction of the napkin, and both side edges are formed by straight lines extending in the front / rear direction of the napkin.
  • the front edge is formed by an arcuate curve that bulges toward the front of the napkin.
  • the middle-high rear portion 6B is formed in a region including the wearer's buttocks groove. Specifically, it is provided in the region from the position where the buttocks groove starts on the crotch side of the wearer to the rear, the position beyond the buttocks groove, the end position of the buttocks groove or the intermediate position of the buttocks groove.
  • the middle / high rear portion 6B is preferably formed in a tapered shape with a rear portion gradually narrowing toward the rear of the napkin. As a result, the middle / high rear portion 6B can easily enter the depth of the buttocks groove, and the leakage of body fluid that travels through the buttocks groove can be prevented.
  • this tapered shape starts from the front end of the middle / high rear portion 6B (boundary with the middle / high constricted portion 6C). After forming with the straight line extended in a direction, you may make it a taper shape start from there.
  • the middle / high neck portion 6C is provided in a region connecting the middle / high front portion 6A and the middle / high rear portion 6B in the front / rear direction of the napkin, and the front end of the middle / high neck portion 6C is continuous with the rear end of the middle / high front portion 6A
  • the rear end of 6C is continuous with the front end of the middle / high rear portion 6B.
  • the middle and high neck portions 6C are preferably formed in a curved shape in which the outlines on both sides bulge inward in the width direction. Thereby, it becomes easy to fit also to the fine unevenness
  • the middle-high portion 6 contains at least pulp fibers and synthetic fibers, and the ratio of the pulp fibers: synthetic fibers is 80 to 20:20 to 80, preferably 40 to 60:60 to 40 in terms of weight. Is desirable.
  • the said middle-high part 6 can contain a water absorbing polymer.
  • the water-absorbing polymer include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, polysulfone
  • examples include cross-linked acid salts, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide.
  • the water-absorbing polymer having the water-absorbing performance can be adjusted in water-absorbing power and water-absorbing speed by adjusting the crosslinking density and the crosslinking density gradient in the production process. Since the so-called gel blocking phenomenon occurs when the blending amount is increased because the middle and high portions 6 need to promote penetration into the absorbent body 4 side, the blending amount is 1 to 10 in terms of weight with respect to the total weight of the pulp fiber and the synthetic fiber. It is desirable to blend in the ratio of%. In addition, when the water-absorbing polymer content exceeds 50%, the entanglement between the pulp fibers is lost, the sheet strength is lowered, and tearing or cracking is likely to occur.
  • the skin contact surface side (the outer surface side of the liquid-permeable surface sheet 3) is directed from the skin contact surface side (the outer surface side of the liquid-permeable surface sheet 3) toward the non-skin side (the liquid-impermeable back sheet 2 side).
  • a depressed groove 10 is formed.
  • the said compressed groove 10 is formed in the both sides from the area
  • the region including the part corresponding to the body fluid discharge part H is a center region in the width direction including all parts where the wearer's body fluid discharge part H abuts when the sanitary napkin 1 is worn, and the range in the napkin longitudinal direction is In the case where the wing-shaped flaps W are provided on both sides, this generally corresponds to the longitudinal range of the wing-shaped flaps W.
  • the region including the portion corresponding to the buttocks groove is a center region in the width direction including at least a part of the wearer's buttocks groove when the sanitary napkin 1 is worn, and rearward from the start position of the crotch-side buttocks groove. It is the range to the middle position of the buttock groove.
  • the compressed grooves 10 are substantially longitudinal on the both sides of a region including a region corresponding to the body fluid discharge part H to a region including a region corresponding to the buttocks groove.
  • the front longitudinal squeezing grooves 11 and 11 formed continuously along the direction and the rear longitudinal squeezing grooves 11 are arranged separately on the rear side of the front longitudinal squeezing grooves 11 and on both sides of the portion corresponding to the buttocks groove, respectively.
  • the rear longitudinal pressing grooves 12 and 12 formed continuously along the substantially longitudinal direction of the napkin 1 and the front longitudinal pressing grooves 11 and 11 are spaced apart from each other, and the napkin 1
  • the front longitudinal squeezing groove 11 and the rear longitudinal squeezing groove 12 are separated from each other, but the front longitudinal squeezing groove 11 and the rear longitudinal squeezing groove 12 are made continuous. It is good also as a longitudinal direction pressing groove which continues from the area
  • the front longitudinal compression groove 11 is disposed at least on both sides of the middle-high front portion 6A and the middle-high constricted portion 6C, and the rear end portion is slightly over the middle-high rear portion 6B. It is extended.
  • the said back side longitudinal direction pressing groove 12 is arrange
  • the said rear side longitudinal direction pressing groove 12 is arrange
  • the front end of the middle / high rear portion 6B is located on the front side from the front end of the rear longitudinal compression groove 12, and the rear end of the middle / high rear portion 6B is located on the rear side from the rear end of the rear longitudinal compression groove 12. .
  • the rear longitudinal compression groove 12 is provided with a separation portion 15 whose rear end portion is separated to the left and right, and the rear longitudinal compression groove 12 from the rear end of the rear longitudinal compression groove 12.
  • the rear longitudinal squeezing groove 12 is located so that the rear end of the middle high part 6 is located rearward in the napkin longitudinal direction and the middle high part 6 exists on the extension line S of the rear end of the rear longitudinal squeezing groove 12.
  • the rear end portion is inclined inward in the width direction.
  • the rear end portion of the middle-high portion 6 protrudes rearward from the separation portion 15 at the rear end of the left and right rear longitudinal compression grooves 12, 12, and the rear longitudinal direction in the middle-high portion 6 projecting rearward
  • the extension line S at the rear end of the compressed groove 12 is arranged so as to intersect the outline of the middle-high portion 6.
  • the force directed inward in the width direction acts in the direction in which the extension line S extends along the extension line S of the rear longitudinal compression groove 12, but this sanitary napkin 1, since the middle high portion 6 exists on the extension line S of the rear end of the rear longitudinal pressing groove 12, the rear end of the rear longitudinal pressing groove 12 is located in the region made rigid by the middle high portion 6. Therefore, the absorber 4 in the central part can be raised on the skin side without twisting.
  • the absorber on the extension line of the squeezing groove 50 is made highly rigid by the middle-high portion 51 when the way of applying the force from the left and right buttocks differs depending on the sleeping posture and the sleeping phase. Therefore, due to the difference in the magnitude of the force acting in the direction in which the extension line of the compressed groove 50 extends, the absorber in the central part is deformed obliquely or twisted, resulting in a fit to the buttock groove. It decreased, and after-leakage occurred or it felt uncomfortable.
  • the extension line S of the rear end of the said rear side longitudinal direction pressing groove 12 is the groove width of the rear end part of the rear side longitudinal direction pressing groove 12, as FIG. 4 shows. It is the straight line which extended the tangent which passes in the direction center part back to the back side longitudinal direction compressed groove 12.
  • the extension line S is inclined toward the center side (middle high portion 6 side) in the napkin width direction toward the rear in the napkin longitudinal direction.
  • the angle ⁇ formed between the extension line S and the outline of the middle-high portion 6 extending rearward from the point where the extension line S intersects the outline of the middle-high portion 6 is 100 to 170 °.
  • the angle is preferably 120 to 140 °. If this angle ⁇ is smaller than 100 °, the incident angle of the force acting in the direction in which the extension line S extends becomes nearly perpendicular to the outline of the middle-high portion 6, and a large force acts locally on the middle-high portion 6. Abnormal deformation of the mid-high portion 6 is likely to occur.
  • the angle ⁇ is greater than 170 °, the incident angle of the force acting in the direction in which the extension line S extends becomes nearly parallel to the outline of the middle-high portion 6, and it is difficult to receive the force at the middle-high portion 6. A twist occurs in the peripheral absorber 4 portion.
  • the extension line S at the rear end of the rear longitudinal pressing groove 12 preferably has an angle ⁇ of 20 to 70 ° with the napkin longitudinal line 16 as shown in FIG.
  • the rear longitudinal compression grooves 12 of the left and right pairs are formed on both sides of the middle-high portion 6, and the rear end portions are spaced apart from each other left and right, thereby forming a separation portion 15 between these rear end portions. ing.
  • a rear end portion of the middle-high portion 6 is disposed along the napkin longitudinal direction at a central portion in the width direction of the separation portion 15 with a predetermined separation distance from the rear longitudinal pressing groove 12.
  • the separation distance L in the napkin width direction of the separation portion 15 is 12 to 30 mm, preferably 15 to 25 mm. If it is smaller than 12 mm, the width dimension of the middle-high portion 6 interposed in the spacing portion 15 is too small, and it is difficult to obtain the reinforcing effect of the middle portion by the middle-high portion 6, and the center portion is likely to be twisted. Moreover, when larger than 30 mm, while the space
  • the separation distance M in the napkin width direction between the rear end of the rear longitudinal pressing groove 12 and the middle-high portion 6 is 2 to 10 mm, preferably 4 to 8 mm.
  • the separation distance M is smaller than 2 mm, the hardness of the compressed groove 12 is easily felt when the middle and high portions 6 are inserted into the buttocks groove, and the wearing feeling is deteriorated.
  • interval of the pressing groove 12 and the middle-high part 6 will become too wide, and a twist will be in the absorber part which is not reinforced by the middle-high part 6 between the pressing groove 12 and the middle-high part 6. It tends to occur.
  • the projecting length N at which the rear end portion of the middle high portion 6 projects rearward from the rear end portion of the rear longitudinal compression groove 12 is 5 to 15 mm, particularly 7 to 12 mm. preferable.
  • the protrusion length N is smaller than 5 mm, the region reinforced by the middle-high portion 6 formed behind the rear longitudinal compression groove 12 is small, and the rigidity of this region cannot be sufficiently increased.
  • the rear longitudinal pressing groove 12 is preferably formed with higher rigidity than the front longitudinal pressing grooves 11 disposed on both sides of the portion including the body fluid discharge part H. Thereby, it becomes easy to transmit the pressure from the collar part toward the inside from the width direction outside of the collar part groove part to the absorber in the width direction center part, and the width direction center part can be raised higher on the skin side. The fit to the groove can be improved.
  • the groove width is relatively increased, and (2) the area of the high-pressure pressing part having a deeper pressing depth at the bottom of the pressing groove is relatively set. (3) It is possible to use either one of means for narrowing the distance between adjacent high-pressure parts and arranging them at high density, or a combination of two or more.
  • the rear end portion of the rear longitudinal compression groove 12 is located in front of the front end portion of the rear end curved compression groove 14 disposed behind the rear longitudinal compression groove 12 or It is preferable to make the position substantially equal in the longitudinal direction of the napkin. That is, it is preferable to arrange
  • the rear end portion of the middle-high portion 6 is located behind the front end portion of the rear end curved compressed groove 14, but the front end portion of the rear end curved compressed groove 14 is used. And may be disposed at substantially the same position in the longitudinal direction of the napkin, or may be disposed on the front side of the front end portion of the rear end curved squeezing groove 14.
  • the rear side longitudinal direction pressing groove 12 was demonstrated, as FIG. 1 shows, the rear end part of the part corresponding to the collar part groove
  • the rear end portion of the front longitudinal pressing groove 11 is inclined inward in the width direction so that the end is located rearward and the middle-high portion 6 exists on the extended line of the rear end of the front longitudinal pressing groove 11. Also good. At this time, the rear end portion of the front longitudinal pressing groove 11 is preferably disposed at a position substantially equal to the front side or the napkin longitudinal direction from the front end portion of the rear longitudinal pressing groove 12.
  • SYMBOLS 1 Sanitary napkin, 2 ... Impervious back sheet, 3 ... Impervious surface sheet, 4 ... Absorber, 5 ... Encapsulating sheet, 6 ... Middle high part, 7 ... Side nonwoven fabric, 9 ... Thread-like elastic elastic member DESCRIPTION OF SYMBOLS 10 ... Compression groove, 11 ... Front side longitudinal direction compression groove, 12 ... Rear side longitudinal direction compression groove, 13 ... Front end crescent shape compression groove, 14 ... Rear end curved compression groove, 15 ... Separation part

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PCT/JP2017/021595 2016-06-28 2017-06-12 吸収性物品 WO2018003469A1 (ja)

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JP2016127226A JP6371802B2 (ja) 2016-06-28 2016-06-28 吸収性物品
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019146630A (ja) * 2018-02-26 2019-09-05 大王製紙株式会社 吸収性物品
EP3643278A4 (en) * 2017-06-19 2020-06-03 Daio Paper Corporation ABSORBENT ARTICLE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010148719A (ja) * 2008-12-25 2010-07-08 Uni Charm Corp 吸収性物品
JP2012071102A (ja) * 2010-08-31 2012-04-12 Daio Paper Corp 吸収性物品

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010148719A (ja) * 2008-12-25 2010-07-08 Uni Charm Corp 吸収性物品
JP2012071102A (ja) * 2010-08-31 2012-04-12 Daio Paper Corp 吸収性物品

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3643278A4 (en) * 2017-06-19 2020-06-03 Daio Paper Corporation ABSORBENT ARTICLE
JP2019146630A (ja) * 2018-02-26 2019-09-05 大王製紙株式会社 吸収性物品
JP7085362B2 (ja) 2018-02-26 2022-06-16 大王製紙株式会社 吸収性物品

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