WO2014104158A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2014104158A1
WO2014104158A1 PCT/JP2013/084798 JP2013084798W WO2014104158A1 WO 2014104158 A1 WO2014104158 A1 WO 2014104158A1 JP 2013084798 W JP2013084798 W JP 2013084798W WO 2014104158 A1 WO2014104158 A1 WO 2014104158A1
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WO
WIPO (PCT)
Prior art keywords
wing
shaped flap
absorbent article
adhesive layer
width direction
Prior art date
Application number
PCT/JP2013/084798
Other languages
English (en)
Japanese (ja)
Inventor
由美 則元
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 WO2014104158A1 publication Critical patent/WO2014104158A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • A61F13/5605—Supporting or fastening means specially adapted for sanitary napkins or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment

Definitions

  • the present invention includes a wing-shaped flap that is used so as to be wound around the crotch portion of the underwear when being fixed to the underwear, and a wing for preventing a slippage in a mounted state on the underwear contact surface of the wing-shaped flap.
  • the present invention relates to an absorbent article in which a slip prevention adhesive layer is formed.
  • an absorbent article N such as a sanitary napkin, a panty liner, a cage sheet, an incontinence pad, for example, as shown in FIG. 10 and FIG.
  • An absorbent body 52 made of cotton-like pulp or the like is interposed between the back sheet 50 and a liquid-permeable surface sheet 51 made of a nonwoven fabric or a permeable plastic sheet, and extends outward on both sides of the main body.
  • An existing wing-shaped flap W, W is integrally formed. As shown in FIG. 10, the planar shape of the wing-shaped flap W is generally distributed in a trapezoidal shape whose longitudinal length is reduced on the outer side.
  • one or more main body misalignments are formed on the non-skin contact surface side of the main body portion (the outer surface of the liquid-impermeable back sheet 50).
  • the stop adhesive layers 53, 53 are formed, and the wing-slap adhesive layers 54, 54 are formed on the surface (outer surface) of the wing-shaped flaps W, W on the liquid-impermeable back sheet 50 side.
  • the absorbent article N When the absorbent article N is fixed to the underwear, as shown in FIG. 12, the absorbent article N is locally applied, and the wing-shaped flaps W, W protruding laterally are taken out from the underwear, and both wings are The flaps W, W are folded at the folding lines RL, RL, and are adhered to the outer surface of the crotch portion of the underwear while the crotch portion of the underwear is wound.
  • Patent Document 1 a pair of wings are formed so that at least a part of each pair can be polymerized with each other when the absorbent article is mounted, and a male member of a mechanical hook is formed on the non-skin contact surface of one wing. Is disclosed, and the skin contact surface side of the other wing is disclosed so that the male member can be engaged and fastened during wing polymerization.
  • the portion having the largest wing length in the longitudinal direction is located away from the side edge of the absorbent main body, and the root of the wing (the portion close to the side edge of the absorbent main body) is constricted ( Absorbent articles are disclosed.
  • each of the pair of wing parts includes a front part and a rear part with a fixed part center line dividing the length of the fixed part (wings prevention adhesive layer) into two in the longitudinal direction of the absorbent article.
  • An absorbent article is disclosed in which the area of the rear part is smaller than the area of the front part when divided into parts.
  • the structure is such that the wing-shaped flap itself is not directly fixed to the underwear, only by being fixed with a mechanical hook at a portion where the wing-shaped flaps are superposed at the time of wearing. There was a problem that the property article was easily displaced with respect to the underwear.
  • the portion having the largest longitudinal length of the wing-shaped flap is formed at a position away from the side edge of the absorbent main body.
  • the adhesive layer is provided on almost the entire surface of the portion having the largest longitudinal length.
  • the wing-shaped flap and the anti-displacement adhesive layer are provided in a relatively large area, the material cost increases and the wing-shaped flap is likely to be broken or wrinkled during the mounting operation. There was also a problem that it was difficult to carry out the mounting work because it was easy to cause adhesion or mis-adhesion between the agent layers.
  • the size of the wings prevention adhesive layer can be reduced, the fixed part is not easily affected by the movement of the body, it is easy to maintain the fixed state, the material is saved, and the mounting work is easy.
  • simply reducing the size of the adhesive layer for preventing wings will naturally turn the end of the wing-shaped flap, and it will easily come off from the underwear. For this reason, conventionally, the reduction of the area of the adhesive layer for preventing wings was hardly considered.
  • the main problem of the present invention is that even if the area of the wings-stopping adhesive layer provided in the wing-shaped flap is reduced, it is possible to prevent the displacement during wearing of the wing-shaped flap and to fix it stably to the underwear. It is to provide an absorbent article.
  • underwear is attached to each of both side portions of the main body portion where the absorbent body is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet.
  • a wing-shaped flap that is fixed so as to entrain the crotch portion is formed, a main body slip-preventing adhesive layer is formed on the surface of the main body portion on the liquid-impervious back sheet side, and the wing-shaped flap is impervious.
  • the area of the wings-stopping adhesive layer is 5 to 20% of the area of the wing-shaped flap;
  • the wing-shaped flap has an asymmetric shape between the front side and the rear side of the width direction line passing through the outer side end of the wing-shaped flap,
  • the wing-shaped flap has an overlapping portion where the tip portions of the wing-shaped flap overlap each other,
  • the wings-stop adhesive layer is provided in a range surrounded by a width direction line passing through the front end portion of the overlapping portion and a width direction line passing through the rear end portion,
  • An absorbent article is provided in which the outline of the wing-shaped flap has a substantially arc shape at least in the overlapping portion.
  • the invention according to claim 1 is characterized in that the area of the adhesive layer for preventing the wings is 5 to 20% of the area of the wing-shaped flap, which is considerably smaller than that of a normal one. Is provided so that the wing-shaped flap can be prevented from slipping while being mounted, and can be stably fixed to the underwear.
  • an asymmetric shape is used between the front side and the rear side of the width direction line passing through the outer side end of the wing-shaped flap. This is to make it possible to easily fold and stick the sheet properly at the normal folding position without causing problems such as adhesion or erroneous adhesion between the wings-stopping adhesive layers during the mounting operation.
  • the wing-shaped flap has an overlapping portion in which the tip portions of the wing-shaped flap overlap each other when the wing-shaped flap is folded so as to involve the crotch portion of the underwear. Since detachment from the underwear of the wing-shaped flap during installation is likely to occur from the tip of the wing-shaped flap, by providing the overlapping portion at the tip of the wing-shaped flap, the other wing on the surface side of one wing-shaped flap Since the tip of the wing-shaped flap overlaps and the tip of the wing-shaped flap that is at least the inner side is not exposed to the outside in this overlapped portion, it is possible to prevent curling during wearing.
  • the other wing-shaped flap on the outer side is directly affected by the wrinkles of the underwear as compared with the case where it is provided so as to be in direct contact with the underwear because the tip part overlaps the outer surface side of the one wing-shaped flap. It is difficult to maintain the overlapping state stably.
  • the wings prevention adhesive layer is provided within a range surrounded by a width direction line passing through the front end portion of the overlap portion and a width direction line passing through the rear end portion, the vicinity of the overlap portion is an underwear. And the overlapping state of the overlapping portions can be easily maintained. As a result, it is possible to prevent the wings-stopping adhesive layer from peeling off at the initial movement when the wing-shaped flap comes off the underwear, and the area of the wings-stopping adhesive layer can be kept within the minimum necessary range, thereby reducing the area. Can be planned.
  • the outline of the wing-shaped flap is formed in a substantially arc shape at least in the overlapping portion, it is difficult to form a corner portion as a turning point at the tip of the wing-shaped flap in the mounted state. Peeling can be prevented.
  • the wing-shaped flap is relative to the front-rear direction of the absorbent article. Since it is in a curved state protruding outward, it is curved so that the tip of the wing-shaped flap is in close contact with the underwear side, and it is difficult for floating from the underwear to occur.
  • the corner at the tip tends to float from the underwear. Often deviated from.
  • the absorbent article according to claim 1 wherein the maximum width of the overlapping portion is 10 mm or more.
  • the overlapping portion is provided with a maximum width of 10 mm or more in order to clearly demonstrate the effect of the overlapping portion.
  • the size of the overlapping portion is defined from the viewpoint of the area ratio with respect to the area of the wing-shaped flap, and is 10 to 25% of the area of the wing-shaped flap.
  • the wings prevention adhesive layer is disposed with a separation distance of 20 mm or more in the width direction from the outer side end of the wing-shaped flap.
  • the position in the width direction of the wings-stopping adhesive layer is specified, and from the outer side end portion of the wing-shaped flap so that the adhesive layer does not overlap at the overlapping portion at the time of wearing.
  • the separation distance in the width direction is set to 20 mm or more.
  • the said wings prevention adhesive layer is the width direction line which passes along the center part of this wings prevention adhesive layer, and the width direction line which passes the outer side edge part of the said wing-shaped flap,
  • the absorbent article according to any one of claims 1 to 4, wherein is disposed at a position where they substantially coincide with each other.
  • the width passing through the center of the wings-stopping adhesive layer is defined in order to determine the position of the wings-stopping adhesive layer in the longitudinal direction and to prevent the tip of the wing-shaped flap from turning up.
  • the direction line and the width direction line passing through the outer side end of the wing-shaped flap are arranged so as to substantially coincide with each other.
  • the wing-shaped flap has a front outline extending outward from the main body portion and a rear outline extending outward from the main portion, and the width direction line of the absorbent article
  • the angle formed by the width direction line of the absorbent article and the rear outer shape line is set larger than the angle formed by the front outer shape line and the front outer shape line, and the center of gravity of the wing-shaped flap is the base of the wing-shaped flap and the main body portion.
  • wing-shaped flap is made asymmetrical in the front-rear direction.
  • an absorbent article according to any one of claims 1 to 6, wherein at least an outer side end portion of the wing-shaped flap and its vicinity are embossed.
  • the predetermined range of the overlapping portion becomes an embossing region.
  • the tip of the wing-shaped flap can be prevented from flickering.
  • the emboss is provided so as to substantially follow the outline of the wing-shaped flap, and the area of the embossed region is 55% or more of the area of the wing-shaped flap.
  • Item 7 An absorbent article according to Item 7, is provided.
  • embossing is performed substantially along the outline of the wing-shaped flap, and the embossed region is The area is set to be 55% or more of the area of the wing-shaped flap.
  • the present invention even if the area of the wings-stopping adhesive layer provided in the wing-shaped flap is reduced, it is possible to prevent the shift during wearing of the wing-shaped flap and to stably fix the underwear. become.
  • FIG. FIG. 3 is a view taken along the line III-III in FIG. 1. It is a principal part enlarged plan view of the wing-shaped flap W.
  • FIG. It is the top view seen from the shorts outer surface which shows the fixed state to the shorts of the wing-like flap W. It is a principal part enlarged plan view of the wing-shaped flap W which concerns on the other example of a form. It is a principal part enlarged plan view of the wing-shaped flap W.
  • FIG. It is a top view which shows the folding procedure of the wing-shaped flaps W and W.
  • FIG. FIG. 9 is a transverse sectional view (a view taken along the line IX-IX in FIG. 8). It is an expanded view of the conventional sanitary napkin N. It is the cross-sectional view (XI-XI line view of FIG. 10).
  • FIG. 9 is a transverse sectional view (a view taken along the line IX-IX in FIG. 8). It is an expanded view of the conventional
  • the sanitary napkin 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, etc., a liquid-permeable top sheet 3 that allows permeation of menstrual blood or vaginal discharge, and the both sheets 2. , 3, an absorbent body 4 made of cotton-like pulp or synthetic pulp, crepe paper 5 surrounding the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility, and both sides of the surface
  • the side nonwoven fabrics 7 and 7 are respectively formed along the longitudinal direction.
  • the outer edge portions of the liquid-impervious back sheet 2 and the liquid-permeable surface sheet 3 are joined by an adhesive such as hot melt or an adhesive means such as heat seal.
  • the liquid-impervious back sheet 2 and the side nonwoven fabric 7 that extend laterally from the absorbent body 4 at both side edges are joined by an adhesive such as hot melt or an adhesive means such as heat seal. Has been.
  • the structure of the sanitary napkin 1 will be described in detail.
  • a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used.
  • a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film.
  • those having moisture permeability tend to be used from the viewpoint of preventing stuffiness.
  • This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.
  • the liquid-permeable surface sheet 3 is preferably a porous or non-porous nonwoven fabric or a porous plastic sheet.
  • the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton.
  • a nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used.
  • the spunlace method is excellent in terms of flexibility and drapeability
  • the thermal bond method is excellent in terms of being bulky and soft.
  • the absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is composed of, for example, fluffy 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 dissolved pulp, and artificial cellulose fibers such as rayon and acetate.
  • Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price.
  • 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 also 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.
  • side non-woven fabrics 7 and 7 are provided on both sides of the sanitary napkin 1 along the longitudinal direction and almost the entire length of the napkin 1, respectively.
  • Wing-like flaps W, W are formed by a part of the liquid-impervious back sheet 2 that extends sideways and also extends sideways. The wing-shaped flap W will be described in detail later.
  • a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of important functions. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric.
  • a method of polymerizing a compound having a hydrophilic group for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, ,
  • a metal salt such as stannic chloride
  • partially dissolving the surface to make it porous and depositing metal hydroxides to swell or make the synthetic fiber porous, applying capillary action to make it hydrophilic
  • the hydrophilic treatment nonwoven fabric which gave is used.
  • the non-skin contact surface of the main body part in which the absorbent body 4 is interposed between the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 is for fixing to the underwear.
  • a plurality of main body displacement preventing adhesive layers 17, 17... In the illustrated example are formed by an appropriate application pattern, and the main body displacement preventing adhesive layers 17, 17. Covered by.
  • a wings prevention adhesive layer 16 is formed on the surface of the wing-shaped flaps W, W on the liquid-impermeable back sheet 2 side, and the wings prevention adhesive layers 16 and 16 are peeled off for wings. Covered by a material 18.
  • the wings prevention adhesive layer 16 will be described in detail later.
  • the release materials 18 and 19 are formed by joining the release material 19 for the main body and the release material 18 for the wing arranged in the transverse direction at the intersection, or individually attaching the release material 19 for the main body and the release material 18 for the wing, respectively. It is desirable to adhere to (not shown) and to be able to remove both release materials 18 and 19 with a single peeling effort. Further, the release material may be configured to cover the main body anti-adhesion layer 17 and the wing anti-adhesion layer 16 with one substantially cross-shaped release material.
  • the wing-shaped flaps W, W are so-called belly folds that fold to the liquid-permeable surface sheet 3 side together with the wing release material 18 in the individual packaging state.
  • a styrenic polymer for example, a styrenic polymer, a tackifier, or a plasticizer is preferably used as a main component.
  • the styrenic polymer include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, styrene-isobutylene-styrene copolymers, styrene-butadiene-styrene block copolymers, and the like. However, only one of these may be used, or two or more polymer blends may be used.
  • a styrene-butadiene-styrene block copolymer is preferred because of its good thermal stability.
  • the tackifier and plasticizer those that are solid at room temperature can be preferably used.
  • the tackifier include C5 petroleum resins, C9 petroleum resins, dicyclopentadiene petroleum resins, and rosin petroleum resins.
  • Polyterpene resin, terpene phenol resin, etc., and examples of the plasticizer include monomer plasticizers such as trifresil phosphate, dibutyl phthalate, dioctyl phthalate, and polymer plasticizers such as vinyl polymers and polyesters. It is done.
  • a release treatment liquid such as a silicone resin, a fluorine resin, or a tetrafluoroethylene resin is applied to the contact surfaces with respect to the slip prevention adhesive layers 16 and 17, for example.
  • Paper, non-woven fabric, or plastic sheet that has been processed or spray-coated and release-treated can be used.
  • the wing release material 18 is disposed up to a position where the edge on the front side of the napkin extends to the front side of the wing-shaped flap W, and the edge on the rear side of the napkin is a wing shape slightly rearward of the wings-stopping adhesive layer 16. It is arranged up to the middle position of the flap W. Further, both side portions on the front side of the napkin are cut along the outline of the sanitary napkin 1.
  • the wing release material 18 and the main body release material 19 cannot be peeled off by a bonding means such as a hot-melt adhesive or heat seal at the fixing portions 20, 20... It is fixed.
  • the adhering portion 20 is provided over three strips at a position overlapping the main body anti-adhesive adhesive layers 17, 17... And in a range overlapping the wing anti-adhesive adhesive layer 16 in the napkin width direction. It has been.
  • Wing-shaped flap W and Wings prevention adhesive layer 16 In the sanitary napkin 1, by defining the configuration of the wing-shaped flap W and the wings-stopping adhesive layer 16, the wing-shaped flap W can be attached even when the area of the wings-stopping adhesive layer 16 is reduced. Misalignment can be prevented, and it can be stably fixed to the underwear.
  • the wing-shaped flap W has an asymmetric shape between the front side and the rear side of the width direction line S4 passing through the outer side end Wa of the wing-shaped flap W, and at least a part of the outer shape line is a wavy line or a curve. Or it forms with the uneven
  • a wings-stopping adhesive layer 16 is formed on the surface of the wing-shaped flap W on the liquid-impervious back sheet 2 side.
  • the wing-shaped flap W includes a front outline 10 extending outward from the main body portion, a rear outline 11 extending outward from the main portion, and the front outline 10. And an outer shape composed of a front end side outline 12 connecting the rear outline 11. And at least a part of these outlines is a wavy line, a curve, or a combination thereof.
  • at least one of the front outline 10 or the rear outline 11 is a wavy line or a curve or a combination thereof, and in the illustrated example, both the front outline 10 and the rear outline 11 are a convex curve and a concave curve. Are wavy lines formed alternately.
  • the shape of the wing-shaped flap W is greater than the angle ⁇ formed by the width direction line of the sanitary napkin 1 and the front outer shape line 10.
  • the angle ⁇ formed with the rear outline 11 is set larger, and the center of gravity 13 of the wing-shaped flap W is from the center point 14 of the joint line 15 (fold line RL) between the base of the wing-shaped flap W and the main body portion. Is also biased forward by ⁇ S.
  • the front outline 10, the rear outline 11, and the tip outline 12 do not have to be all wavy lines, curves, or a combination thereof, and some of them may be straight. However, as described in detail later, the outline of the predetermined section needs to be formed in a predetermined arc shape.
  • the angles ⁇ and ⁇ may be gradients formed by the center lines of these wavy or curved outlines.
  • An angle ⁇ formed between the width direction line of the sanitary napkin 1 and the front outer shape line 10 is set to about 0 to 20 °, and an angle ⁇ formed between the width direction line of the sanitary napkin 1 and the rear outer shape line 11. Is preferably about 30 to 45 °.
  • the angle ⁇ formed by the width direction line of the sanitary napkin 1 and the front side outline 10, the width direction line of the sanitary napkin 1 and the rear side is preferably 15 ° or more.
  • this angle difference is 15 ° or more, a sufficient eccentric distance ⁇ S can be secured, and when the wing-shaped flap W is folded back, even if the wing-shaped flap is folded back by hand while moving the hand forward, it is tight. It will be able to be worn in a normal state.
  • the wing-shaped flap W has an overlapping portion 22 in which the tip portions of the wing-shaped flap W overlap each other with a certain amount of width when folded so that the crotch portion of the underwear is wound when worn. It is formed to have.
  • the projection length L of the wing-shaped flap W is 48 mm or more, preferably 50 to 58 mm.
  • the length of the base end portion of the wing-shaped flap W in the napkin longitudinal direction is preferably 80 mm or less so as to fit in the crotch of the underwear.
  • the range in which the wings prevention adhesive layer 16 is disposed is surrounded by a width direction line S1 passing through the front end portion of the overlapping portion 22 and a width direction line S2 passing through the rear end portion.
  • a width direction line S1 passing through the front end portion of the overlapping portion 22
  • a width direction line S2 passing through the rear end portion.
  • the outline of the wing-shaped flap W has a substantially arc shape constituted by a composite arc (pseudo arc shape) in which a single arc or an arc having a plurality of curvature radii is combined at least in the overlapping portion 22. That is, at least the overlapping portion 22 does not have a straight line portion and is formed in a generally smooth arc shape.
  • the planar shape of the overlapping portion 22 composed of such outlines is a deformed ellipse in which the curves protruding on both sides intersect at the upper and lower ends, and approximates the so-called cross-sectional shape of a meteorite. is doing.
  • the overlapping portion 22 is preferably formed in a shape that is long in the napkin longitudinal direction, and a shape that is long in the napkin width direction is not preferable.
  • the wing-shaped flap W is formed in the state where the sanitary napkin 1 is curved along the roundness in the front-rear direction of the body. Since it is in a curved state protruding outward in the front-rear direction, if the tip part is formed in an arc shape in this state, the tip part of the wing-shaped flap W is in close contact with the underwear side, and floating or turning up from the underwear No longer occurs.
  • the maximum width B of the overlapping portion 22 is preferably 10 mm or more so that the effect of providing the overlapping portion 22 is clearly exhibited. If the maximum width B is less than 10 mm, the overlapping state between the tip portions is not sufficient, and the overlapping state is released when the tip portion of the wing-shaped flap W located on the underwear side is deformed by the twist of the underwear or the like. There is a risk of turning over.
  • the maximum width B of the overlapping portion 22 is the width of the portion where the width of the left and right wing-shaped flaps W, W in the napkin width direction between the outer lines of the left and right wings is maximum.
  • the maximum width B of the overlapping portion 22 is 10 to 20 mm, preferably 14 to 16 mm.
  • the maximum length D (length in the napkin longitudinal direction) of the overlapping portion 22 is 25 to 30 mm, preferably 27 to 28 mm.
  • the area of the overlapping portion 22 is 10 to 25%, preferably 15 to 18% of the area of one wing-shaped flap W.
  • the size of the overlapping portion 22 can be arbitrarily set within the above prescribed range because there are individual differences depending on the position where the wing-shaped flap W is folded back and the body shape. For example, as shown in FIG.
  • the outer line of the wing-shaped flap W on one side is the outer side end Wa of the wing-shaped flap W on the other side and the outer side end 16 a of the wingsling prevention adhesive layer 16.
  • the outer line of the wing-shaped flap W on the one side is the outer side end of the wings-stopping adhesive layer 16 on the other side. You may form so that it may adjoin to 16a.
  • the area of the wingsleet-stopping adhesive layer 16 is 5 to 20%, preferably 5 to 17%, more preferably 6 to 9% of the area of one wing-shaped flap W, compared to the usual one. It is set small. In the example shown in the figure, it is 7.2%.
  • the area of the wing-shaped flap W connects the base end portion where the front outer shape line 10 of the wing-shaped flap W extends outward from the main body portion and the base end portion where the rear outer shape line 11 extends outward from the main body portion. It is the area of the part that extends outward from the bar.
  • the arrangement position of the wings-stopping adhesive layer 16 in the napkin width direction is such that the outer side end portion Wa of the wing-shaped flap W is not adhered to the wing-shaped flap W on the other side in the overlapping portion 22 at the time of mounting. It is preferable that a predetermined separation distance C is provided in the napkin width direction. Specifically, the separation distance C is set to 20 mm or more, preferably 20 to 30 mm, because the maximum width B of the overlapping portion 22 is 10 to 20 mm.
  • the flap W is formed at a position where the width direction line S4 passing through the outer side end portion Wa of the flap W substantially coincides.
  • the fact that the two width direction lines S3 and S4 substantially match includes not only the case where the two width direction lines S3 and S4 completely match, but also the case where the two width direction lines S3 and S4 are provided so as to be shifted within a range of 8 mm.
  • the planar shape of the wingsle-stopping pressure-sensitive adhesive layer 16 is arbitrary, but it is preferably formed in a rectangular shape that is long in the longitudinal direction of the napkin, as in the illustrated example.
  • the length at this time is within the range of the maximum length D of the overlapping portion 22 as described above, and the width is 5 to 18 mm, preferably 8 to 13 mm.
  • At least the outer end portion Wa of the wing-shaped flap W and its vicinity are embossed. 23 is preferably applied.
  • the embossing 23 is preferably provided along a contour line of the wing-shaped flap W and provided in a predetermined region on the inner side from the contour line of the wing-shaped flap W over substantially the entire periphery of the wing-shaped flap W.
  • the area of the region where the emboss 23 is applied at this time is preferably 55% or more of the area of the wing-shaped flap W.
  • the embossing 23 is provided at the tip of the wing-shaped flap W at a position 6 to 25 mm, preferably 8 to 14 mm from the outer side end Wa of the wing-shaped flap W.
  • the embossing 23 is formed in such a range, as shown in FIG. 5, when the overlapping portion 22 is formed up to the center position of the separation distance C from the tip of the wing-shaped flap W of the wings-stopping adhesive layer 16
  • the overlap portion 22 is formed over substantially the entire length of the separation distance C as shown in FIG. 6, almost the entire area (100%) of the overlap portion 22 is an emboss addition region. % Area is set as an emboss addition area.
  • the emboss pattern of the emboss 23 is preferably a discrete pattern in which a large number of small emboss portions are arranged at intervals, and the planar shape of one emboss portion provided in a discrete manner is circular or elliptical. , Polygons and the like. Further, as the arrangement pattern of the small embossed portions, it can be arranged in a staggered pattern, a lattice shape, or at random. As shown in FIG. 7, a single pattern such as a floral pattern by combining a plurality of embossed portions. It is also possible to arrange them in combination.
  • the size of one embossed portion arranged in a discrete manner is 0.2 to 1.8 mm 2 , preferably 0.5 to 0.8 mm 2 .
  • a plurality of floral embosses 25, 25,..., which are a combination of a plurality of ellipses, are provided for the purpose of reinforcing the rigidity of the central portion of the wing-shaped flap W.
  • the wing-shaped flap W When the sanitary napkin 1 is individually packaged, the wing-shaped flap W has one wing-shaped flap W winged at a fold line RL set at the base end of the wing-shaped flap W, as shown in FIG. After being folded to the liquid-permeable surface sheet 3 side together with the release material 18 for the liquid, the other wing-shaped flap W is liquid-permeable together with the release material 18 for the wing at the folding line RL set at the base end of the wing-shaped flap W. It is made to fold to the surface sheet 3 side.
  • the wing-shaped flaps W, W are simply folded to the liquid-permeable surface sheet 3 side, the shape is not stable, and the wing-shaped flaps W, W are lifted or fluttered. And may cause entanglement. Therefore, in order to stabilize the operation, the wing-shaped flap W is held in a state of being folded together with the wing release material 18 on the liquid-permeable surface sheet 3 side. Specifically, as shown in FIGS. 8 and 9, the end portions of the wing-shaped flaps W and W folded on the liquid-permeable surface sheet 3 side overlap each other. In addition, the ends of the wing-shaped flaps W may be temporarily bonded to each other at the overlapping portion (not shown).
  • SYMBOLS 1 Sanitary napkin, 2 ... Liquid impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 5 ... Crepe paper, 7 ... Side nonwoven fabric, 16 ... Wings prevention adhesive layer, 17 ... Main body Anti-slip adhesive layer, 22 ... Overlapping part, 23 ... Emboss, W ... Wing flap

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Dans la présente invention, il est possible d'empêcher le déplacement d'un rabat en forme d'aile en cours d'utilisation et de fixer de façon stable le rabat en forme d'aile au sous-vêtement même lorsque la zone de la couche adhésive empêchant le déplacement du rabat est réduite, la couche adhésive empêchant le déplacement du rabat étant prévue sur le rabat en forme d'aile. La zone de la couche adhésive empêchant le déplacement du rabat (16) représente 5 à 20 % de la zone du rabat en forme d'aile (W). Le rabat en forme d'aile (W) a une forme asymétrique à l'avant et à l'arrière d'une ligne en largeur passant à travers une section terminale externe (Wa). Le rabat en forme d'aile (W) présente une section de chevauchement (22), dans laquelle les sections terminales avant du rabat en forme d'aile (W) se chevauchent dans un état tel que le rabat en forme d'aile (W) est plié afin d'envelopper une partie formant entrejambe du sous-vêtement en utilisation. La couche adhésive empêchant le déplacement du rabat (16) est prévue dans une plage entourée par une ligne en largeur (S1) passant à travers la section terminale avant de la section chevauchante (22) et une ligne en largeur (S2) passant à travers la section terminale arrière de la section chevauchante (22). Le contour du rabat en forme d'aile est formé de telle sorte qu'il présente une forme sensiblement arquée au moins dans la section chevauchante (22).
PCT/JP2013/084798 2012-12-26 2013-12-26 Article absorbant WO2014104158A1 (fr)

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JP2012282012A JP6151510B2 (ja) 2012-12-26 2012-12-26 吸収性物品
JP2012-282012 2012-12-26

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WO2014104158A1 true WO2014104158A1 (fr) 2014-07-03

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Cited By (1)

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USD882772S1 (en) 2017-07-07 2020-04-28 Essity Hygiene And Health Aktiebolag Sanitary article

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JP6043406B1 (ja) * 2015-06-08 2016-12-14 ユニ・チャーム株式会社 吸収性物品

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US20050124959A1 (en) * 2003-12-09 2005-06-09 Kimberly-Clark Worldwide, Inc. Absorbent articles with asymmetric protective wing portions
JP2008289631A (ja) * 2007-05-24 2008-12-04 Kao Corp 吸収性物品及びその製造方法
JP2011050405A (ja) * 2009-08-31 2011-03-17 Daio Paper Corp 個装吸収性物品
JP2011172658A (ja) * 2010-02-23 2011-09-08 Daio Paper Corp 吸収性物品
JP2011183222A (ja) * 2011-06-29 2011-09-22 Daio Paper Corp 吸収性物品
JP2011212438A (ja) * 2010-03-19 2011-10-27 Daio Paper Corp 吸収性物品
JP2012010765A (ja) * 2010-06-29 2012-01-19 Daio Paper Corp 吸収性物品

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SE520687C2 (sv) * 2001-12-19 2003-08-12 Sca Hygiene Prod Ab Absorberande alster med sidoflikar mekaniskt förbundna till ytskiktet

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Publication number Priority date Publication date Assignee Title
US20050124959A1 (en) * 2003-12-09 2005-06-09 Kimberly-Clark Worldwide, Inc. Absorbent articles with asymmetric protective wing portions
JP2008289631A (ja) * 2007-05-24 2008-12-04 Kao Corp 吸収性物品及びその製造方法
JP2011050405A (ja) * 2009-08-31 2011-03-17 Daio Paper Corp 個装吸収性物品
JP2011172658A (ja) * 2010-02-23 2011-09-08 Daio Paper Corp 吸収性物品
JP2011212438A (ja) * 2010-03-19 2011-10-27 Daio Paper Corp 吸収性物品
JP2012010765A (ja) * 2010-06-29 2012-01-19 Daio Paper Corp 吸収性物品
JP2011183222A (ja) * 2011-06-29 2011-09-22 Daio Paper Corp 吸収性物品

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD882772S1 (en) 2017-07-07 2020-04-28 Essity Hygiene And Health Aktiebolag Sanitary article
USD892317S1 (en) 2017-07-07 2020-08-04 Essity Hygiene And Health Aktiebolag Sanitary article

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