WO2015190548A1 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
- Publication number
- WO2015190548A1 WO2015190548A1 PCT/JP2015/066845 JP2015066845W WO2015190548A1 WO 2015190548 A1 WO2015190548 A1 WO 2015190548A1 JP 2015066845 W JP2015066845 W JP 2015066845W WO 2015190548 A1 WO2015190548 A1 WO 2015190548A1
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- WO
- WIPO (PCT)
- Prior art keywords
- groove
- emboss
- sheet
- longitudinal direction
- concave groove
- Prior art date
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
- A61F13/51458—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being air-pervious or breathable
-
- 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
- A61F2013/15008—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterized by the use
- A61F2013/15146—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterized by the use for urine collection
-
- 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
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
- A61F2013/15463—Absorbency
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
- A61F2013/530379—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp comprising mixtures of fibres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F2013/53463—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad with a reinforcing structure, e.g. net
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53765—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
- A61F2013/53778—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with grooves
Definitions
- the present invention mainly relates to absorbent articles used for incontinence pads, sanitary napkins, vaginal sheets, medical pads, toiletries, disposable diapers, etc., and grooves along the longitudinal direction on the surface side of the absorbent body
- the present invention relates to an absorbent article in which is formed.
- an absorbent body is interposed between a liquid-impermeable 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 has been known.
- the applicant has an absorber interposed between the liquid-permeable surface sheet and the back sheet, and is substantially longitudinal on the surface of the absorber on the liquid-permeable surface sheet side.
- the high pressing portion includes an inclined element extending in the groove width direction and inclined in the groove longitudinal direction in a unit section in which the groove is partitioned in the groove longitudinal direction, and from the side end on one side of the groove to the other side.
- an absorbent article which is formed so as to be substantially transverse to the side end, and is formed in a pattern in which the high pressing portion of the unit section is repeatedly reversed in the longitudinal direction of the groove.
- the absorbent article described in Patent Document 2 is provided with a high-pressure portion in a predetermined pattern on the bottom surface of the concave groove, the high-pressure portion can reinforce the concave groove and prevent deformation of the concave groove during mounting. It has an effect such that body fluid is easily diffused along the longitudinal direction of the groove by being guided to the high-pressure portion.
- both side edges of the groove are formed along the groove.
- FIG. 10 which is cited as one example of the above-mentioned Patent Document 2 as a pattern of the pressing portion to be applied to the bottom surface of the groove.
- the said high pressing part is provided to the bottom face of a ditch
- a main problem of the present invention is to provide an absorbent article that makes it difficult to crush the groove and improves operability during embossing.
- an absorbent body is interposed between the liquid-permeable surface sheet and the back sheet, and the surface of the absorbent body on the liquid-permeable surface sheet side is substantially omitted.
- An absorbent article in which a groove along the longitudinal direction is formed, and a high-pressure portion is formed on the bottom surface of the groove, The high pressing portion extends in the groove width direction and inclines in the groove longitudinal direction in a unit section that divides the groove in the longitudinal direction, and traverses from one side end to the other side end of the groove.
- a high-pressure portion including the first emboss and the second emboss is formed on the bottom surface of the concave groove.
- the first emboss extends in the groove width direction and inclines in the groove longitudinal direction in a unit section in which the groove is partitioned in the longitudinal direction, and traverses from one side end to the other side end of the groove.
- the unit section is formed in a wavy pattern as a whole by repeatedly reversing the unit section in the longitudinal direction of the groove.
- groove is formed in the side edge part on the opposite side to the convex part of the said wavy 1st embossing.
- the embossing spacing between the embossing serves as an escape route for pressure during squeezing to disperse the distortion of the surface material, so that the surface material can be prevented from being broken without accumulating the distortion of the surface material due to squeezing. .
- clogging of the embossing roll is eliminated and the embossing pattern is separated. The embossing roll is less likely to clog and the operability is improved.
- the absorbent article according to claim 1 wherein the first emboss has a convex portion protruding outward in the width direction.
- the second emboss is formed along the side edge of the concave groove by forming the second emboss by a straight line along the concave groove, the pressure from the outer side is reduced. In contrast, a wider range of reinforcement can be achieved.
- a separation width between the first emboss and the second emboss is 2 mm or more and 5 mm or less.
- the separation width between the wavy first emboss and the second emboss is defined.
- the separation width is smaller than 2 mm, the embossing pressure cannot be dispersed and wrinkles are easily generated, and the embossing roll is easily clogged.
- it is larger than 5 mm, the strength of the concave portion of the wavy first emboss cannot be sufficiently reinforced, and the concave groove may be easily crushed.
- the groove is less likely to be crushed and the operability during embossing can be improved.
- FIG. 3 is a view taken along line III-III in FIG.
- FIG. 4 is a cross-sectional view of the absorber 4.
- 3 is an enlarged plan view of a concave groove 22.
- FIG. (A) is before deformation
- (B) is after deformation, and is a view taken along the line VI-VI in FIG.
- It is an enlarged plan view of the groove 22 according to another embodiment.
- It is an enlarged plan view of the groove 22 according to another embodiment.
- It is an enlarged plan view of a conventional concave groove.
- (A) is before deformation
- (B) is after deformation, and is a view taken along line XI-XI in FIG.
- an incontinence pad 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet and the like, a liquid-permeable front sheet 3 that allows urine to permeate quickly, and the like.
- An absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3 and a hydrophilic substance disposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as necessary.
- the outer edge with 3 is hot melt
- the liquid-impervious back sheet 2 and the side nonwoven fabric 7 which are bonded by an adhesive such as an adhesive or heat seal or the like and extend laterally from the absorbent body 4 at both side edges thereof are hot-melted.
- the absorber 4 can be surrounded by an encapsulating sheet (not shown) such as crepe paper or non-woven fabric in order to maintain the shape and improve the diffusibility.
- the liquid-impervious back sheet 2 is made of a sheet material having at least water-impervious properties such as polyethylene and polypropylene, but in addition to this, a non-woven sheet after securing a substantially liquid-impervious property through a waterproof film.
- a liquid-impervious back sheet is composed of the waterproof film and the nonwoven fabric.
- those having moisture permeability tend to be suitably used 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.
- 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. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft.
- the absorbent body 4 is composed of, for example, absorbent fibers such as fluffy pulp and the superabsorbent polymer 8, and in the illustrated example, the planar shape is an oblong shape that is long in the longitudinal direction of the pad.
- the superabsorbent polymer 8 is, for example, granular powder, and is dispersed and mixed in the pulp constituting the absorber 4.
- the pulp examples 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.
- the encapsulating sheet is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as a result, and the above-described excellent absorbency is achieved. The body fluid is quickly diffused by the encapsulating sheet, and the reverse of such urine is prevented.
- the basis weight of the pulp is 100 g / m 2 to 600 g / m 2 , preferably 200 g / m 2 to 500 g / m 2 .
- the superabsorbent polymer 8 examples include a cross-linked polyacrylate, a self-crosslinked polyacrylate, a saponified acrylate-vinyl acetate copolymer cross-linked product, and a cross-linked isobutylene / maleic anhydride copolymer.
- a crosslinked polysulfonate, and a partially crosslinked water-swellable polymer such as polyethylene oxide and polyacrylamide.
- those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred.
- the water-absorbing polymer having the water-absorbing performance can be adjusted in water absorption (absorption capacity) and water absorption speed by adjusting the crosslinking density and the crosslinking density gradient in the production process.
- the basis weight of the polymer is 150 g / m 2 to 500 g / m 2 , preferably 200 g / m 2 to 450 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 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.
- the second sheet 6 only needs to be hydrophilic to body fluids. Specifically, by using recycled fibers such as rayon and cupra, natural fibers such as cotton, the material itself has hydrophilicity, or synthesis of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc. The fiber which surface-treated with the hydrophilizing agent and provided the hydrophilic property can be used. Further, the second sheet 6 may have a porous film layer on the back surface side (absorbent body 4) in order to give elasticity, and may be a laminated sheet with an encapsulating sheet. You may use the raw material to contain.
- Side nonwoven fabrics 7 and 7 are provided on both sides of the surface of the incontinence pad 1 along the longitudinal direction and over the entire length of the incontinence pad 1, and the outer portions of the side nonwoven fabrics 7 and 7 extend laterally.
- the liquid-impermeable back sheet 2 is laterally extended, and the side nonwoven fabric 7 portion and the liquid-impermeable back sheet 2 portion that are extended to the side are formed by a hot melt adhesive or the like. Joined to form side flaps.
- 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 the penetration of urine, etc. or enhancing the feeling of touch, such as SSMS, SMS, and SMMS coated with a silicon-based, paraffin-based, alkylchromic chloride-based water repellent, etc.
- a water-repellent non-woven fabric It is desirable to use a water-repellent non-woven fabric, and if importance is attached to the absorbability of body fluids, a method of polymerizing a compound having a hydrophilic group, such as an oxidation product of polyethylene glycol, in the synthetic fiber production process, Treating with metal salt such as stannic, partially dissolving the surface to make it porous and making the synthetic fiber swell or porous by applying a metal hydroxide, etc., applying capillary action to impart hydrophilicity It is desirable to use a hydrophilic treated nonwoven fabric. As this side nonwoven fabric 7, what was formed by a proper processing method using natural fiber, synthetic fiber, regenerated fiber, etc. as a raw material can be used.
- a hydrophilic group such as an oxidation product of polyethylene glycol
- the side nonwoven fabrics 7 and 7 are appropriately folded, and a pair of left and right inner solid gathers 10 and 10 that stand on the skin side with the position near the side edge of the absorbent body 4 as a standing base end, and the inner side relatively
- a pair of left and right outer three-dimensional gathers 11 standing on the skin side formed by the liquid-impervious back sheet 2 and the side nonwoven fabric 7 that are located outside the three-dimensional gather 10 and extend laterally from the absorbent body 4, 11 is a three-dimensional gather BS having a double gather structure.
- the three-dimensional gather BS may have a single gather structure including only the inner three-dimensional gather 10 or the outer three-dimensional gather 11, or a three-dimensional gather standing up on the skin side simply by disposing the side nonwoven fabric 7. It does not have to be formed into a shape.
- the side nonwoven fabric 7 is folded back on both sides in the width direction toward the back side of the pad.
- one or a plurality of double sheet portions 7a and 7b are formed on the outer side, and both ends or appropriate positions in the longitudinal direction are fixed inside the double sheet portion 7a on the inner side in the width direction.
- One or a plurality of thread elastic elastic members 12 are arranged in the double sheet portion 7b on the outer side in the width direction, and two appropriate positions in the longitudinal direction are fixed.
- the base end portion of the double sheet portion 7 b on the outer side in the width direction extending laterally from the absorbent body 4.
- the inner solid gathers 10 standing on the skin side are formed by the double sheet portion 7a on the inner side in the width direction, and the skin is formed by the double sheet portion 7b on the outer side in the width direction.
- An outer three-dimensional gather 11 standing on the side is formed. As shown in FIG.
- the side nonwoven fabric 7 is not provided with the elastic elastic members 12 and 13 at both ends in the longitudinal direction of the pad, and the double sheet portion 7a on the inner side in the width direction is hot. It is joined to the absorber 4 side by a melt adhesive or the like.
- a concave groove 22 for inflow of body fluid is formed along the longitudinal direction on the surface side (skin surface side).
- the concave groove 22 receives the body fluid discharged on the surface of the liquid-permeable top sheet 3, temporarily stores the body fluid, induces diffusion of the body fluid in the front-rear direction, and absorbs the body fluid into the absorbent body 4. To prevent side leakage.
- the concave groove 22 may be formed by integrally squeezing components from the surface side of the liquid-permeable surface sheet 3 to the absorber 4 from the surface side of the liquid-permeable surface sheet 3.
- the absorbent body recess 20 is formed in advance, and the embossed portion 21 is provided along the absorbent body recess 20 to squeeze the constituent members that are higher than the absorbent body 4 from the surface side (skin surface side) of the liquid-permeable surface sheet 3. What was formed by this is desirable for the reason that deformation of the concave groove 22 due to leg pressure can be prevented.
- the absorber 4 is formed with an absorber recess 20 formed in a concave groove shape or a slit shape without being squeezed in advance, in the illustrated example, before the embossed portion 21 is formed.
- the absorbent body recess 20 is formed by (A) stacking fiber, or (B) the lower layer absorbent body 4 a formed with the thickness of the bottom of the absorber recess 20, and A portion corresponding to the absorber recess 20 is formed by a laminated structure with the upper absorber 4b opened.
- the absorbent body recess 20 is formed in the pad width direction center portion corresponding to the body fluid discharge site H and only one strip in the longitudinal middle portion with respect to the absorbent body 4. However, it may be formed by a plurality of strips spaced in the pad width direction, or may be formed in a discontinuous line shape spaced in the pad longitudinal direction (not shown). In addition, when providing two or more absorber recessed parts 20, it is preferable to provide the said embossed part 21 with respect to each absorber recessed part 20. As shown in FIG.
- the planar dimensions of the absorber recess 20 are preferably such that the length in the pad longitudinal direction is 100 to 180 mm and the groove width (bottom groove width) is 5 to 30 mm.
- the depth of the absorber recess 20 is preferably 50% or more of the thickness of the absorber 4, specifically about 5 to 8 mm.
- the absorbent 4 portion interposed in the bottom of the absorbent recess 20 (the portion on the liquid-impermeable back sheet 2 side, the non-skin side portion) has a pulp basis weight of 70 g / m 2 to 280 g / m 2 , preferably 90 g / m 2 to 260 g / m 2 is preferable. Further, the basis weight of the water-absorbing polymer 8 in this portion is 0 g / m 2 to 270 g / m 2 , preferably 0 g / m 2 to 35 g / m 2 .
- the plane dimension when the embossed part 21 is provided may be larger or smaller than the dimension of the absorber recess 20.
- a high-pressure squeezed portion 23 squeezed deeper than the bottom surface of the peripheral concave groove 22 is formed in an appropriate pattern.
- the high-pressure portion 23 is a portion that is squeezed deeper than the bottom surface of the peripheral concave groove 22, and is formed in a predetermined pattern on the bottom surface of the concave groove 22. Specifically, as shown in FIG. 5, the high pressing portion 23 extends in the groove width direction and inclines in the groove longitudinal direction in a unit section 26 in which the concave groove 22 is partitioned in the longitudinal direction in a plan view.
- the concave groove 22 is formed so as to cross from one side end to the other side end, and the unit section 26 is repeatedly reversed in the longitudinal direction of the groove, along the concave groove 22 as a whole.
- Wave-shaped first embosses 24 formed in a pattern in which concaves and convexes are repeated on both sides in the width direction so as to reciprocate both side edges of the groove 22; It is comprised from the 2nd embossing 25 formed along the said ditch
- the wavy first emboss 24 is formed in a wavy shape such as a wavy curve or a zigzag line (see FIG. 8) that repeats reciprocating between one side edge 22 a and the other side edge 22 b of the groove 22. It consists of continuous lines.
- the corrugated first emboss 24 is provided with alternately and repeatedly convex portions 24a projecting toward one side edge 22a and projecting portions 24b projecting toward the other side edge 22b.
- the wavy first emboss 24 is formed so as to extend in the same direction in the longitudinal direction of the groove without crossing or connecting one emboss line. Therefore, a closed region surrounded by the emboss line is not provided on the bottom surface of the concave groove 22.
- the wavy first emboss 24 is preferably formed over the entire width of the groove 22. That is, the first emboss 24 is configured so that the tops of the convex portions 24 a and 24 b coincide with or are close to the side edges 22 a and 22 b of the concave groove 22. Thereby, the concave groove 22 can be reinforced over the entire width, and the collapse of the concave groove 22 due to pressure from both sides in the width direction can be surely prevented.
- the term “adjacent” means that the tops of the convex portions 24 a and 24 b are arranged in the range of 2 mm or less, preferably 1 mm or less, inside the side edges 22 a and 22 b of the concave groove 22.
- the wavy first emboss 24 is preferably formed in a rounded curved shape that bulges outward in the width direction, as shown in FIG. Thereby, it becomes possible to reliably prevent crushing due to pressure from the outside.
- the wavy first emboss 24 is preferably formed in a sine wave shape as a whole, but may be formed by a pattern in which semicircular arcs are alternately reversed and continued.
- the distance T between the adjacent convex portions 24a, 24a in the same direction of the corrugated first emboss 24 is 16 mm to 25 mm, preferably 18 mm to 22 mm.
- the wavy first emboss 24 is formed at substantially the same distance T over the entire length of the concave groove 22 (formed with substantially the same period).
- the second emboss 25 is a plurality of embosses formed in a continuous line along the groove longitudinal direction of the concave groove 22 in a predetermined range.
- the fact that the second emboss 25 is formed along the concave groove 22 means that a straight line connecting the end portions of the emboss is substantially along the groove longitudinal direction of the concave groove 22, and this straight line is parallel to the groove longitudinal direction line.
- those having an angle difference of up to about ⁇ 20 ° with respect to the groove longitudinal direction line are also included.
- the line along the longitudinal direction does not need to be a straight line, and can be formed by a curved line, a broken line, a wavy line, or the like.
- the second emboss 25 is formed on the side edge of the concave groove 22 opposite to the convex portions 24a, 24b from which the wave-shaped first emboss 24 protrudes outward in the width direction. That is, in the convex part 24a protruding toward the one side edge 22a of the concave groove 22, the second emboss 25 is formed along the other side edge 22b on the opposite side, and the other side edge of the concave groove 22 is formed. In the convex part 24b which protrudes toward 22b, the 2nd emboss 25 is formed along one side edge 22a on the opposite side.
- the second emboss 25 is provided such that the outer edge portion coincides with or is close to the side edge 22a or 22b of the concave groove 22.
- adjacent means that the outer edge of the second emboss 25 is arranged in the range of 2 mm or less, preferably 1 mm or less, inside the side edges 22 a and 22 b of the groove 22.
- the wavy first emboss 24 is provided so as to reciprocate on both side edges 22a, 22b of the groove 22, and the second emboss 25 is provided on the side edges 22a, 22b of the groove 22, thereby 24 and the 2nd emboss 25 are arrange
- the wavy first emboss 24 and the first emboss 25 have resistance to leg pressure from the outer side in the width direction at the same position in the groove width direction.
- the second emboss 25 is preferably formed by a straight line along the groove longitudinal direction of the groove 22 within a predetermined range in which the wavy first emboss 24 becomes a recess. Accordingly, since the second emboss 25 is provided along the side edge of the concave groove 22, a wider range of reinforcement is possible with respect to the pressure from the outer side on the side where the second emboss 25 is provided. .
- the second emboss 25 is provided at a position where the central portion in the longitudinal direction of the groove coincides with the tops of the convex portions 24a and 24b of the wavy first emboss 24 in the groove width direction. That is, when a groove width direction line is drawn at the top of each convex portion 24a, 24b of the wavy first emboss 24, the groove length direction line is used as a boundary to form the same length on both sides in the groove longitudinal direction. Yes.
- the high pressing portion 23 is formed with one first emboss 24 that is continuous along the concave groove 22, and each of the second embosses 25 at a portion that becomes a concave portion of the wavy first emboss 24. Is arranged. That is, a plurality of the second embosses 25 are provided at a predetermined position with respect to the concave groove 22.
- the separation width S between the wavy first emboss 24 and the second emboss 25 is a portion where the linear distance between the two embosses is the shortest, and is preferably 2 mm or more and 5 mm or less ( 2 mm ⁇ S ⁇ 5 mm).
- the separation width S is smaller than 2 mm, the pressure at the time of embossing is not easily dispersed and wrinkles or the like are likely to occur, and paper powder or the like easily enters the gap portion of the embossing roll and becomes clogged.
- the separation width S is larger than 5 mm, the strength of the concave portion of the wave-shaped first emboss 24 cannot be sufficiently reinforced, and the concave groove 22 is easily crushed.
- the high-pressure squeezed portion 23 including the wavy first emboss 24 and the second emboss 25 is formed on the bottom surface of the groove 22.
- a high pressing part is comprised only with the said wavy 1st embossing 24, as shown in FIG.9 and FIG.10, resistance with respect to the leg pressure from the width direction outer side in the recessed part in which the said wavy embossing is not formed Therefore, the concave groove is crushed, the body fluid storage capacity of the concave groove is reduced, and the body fluid is hardly absorbed by the absorber.
- the second embossing 25 is provided in a portion corresponding to the concave portion of the wavy first embossing 24. The resistance force against the pressure is increased, and the concave groove 22 is not easily crushed.
- the wavy first emboss 24 and the second emboss 25 are not connected, and the emboss lines are formed so as to be independent from each other. For this reason, the area
- the basis weight of the superabsorbent polymer 8 disposed at the bottom of the absorbent body recess 20 of the absorbent body 4 is set in another region. It is preferable to make it smaller than the basis weight. If a large amount of the superabsorbent polymer 8 is arranged in this region, the surface material is easily broken by the superabsorbent polymer 8, and therefore the risk of breakage during embossing is reduced by reducing the amount of polymer.
- the embossing convex part of an embossing roll is a tip. It is preferable to use a corner portion subjected to R treatment. Thereby, the tear of the liquid-permeable surface sheet 3 can be surely prevented as compared with a corner portion not subjected to the R treatment or a chamfered C treatment.
- first emboss 24 and second emboss 25 may be different, but they are made the same so as to generate an even resistance against pressure from both sides in the width direction. Is desirable.
- the high-pressure portion 23 is integrally applied to the constituent members from the liquid-permeable surface sheet 3 to the absorber 4 by pressing from the surface side of the liquid-permeable surface sheet 3.
- it may be applied only to the absorbent body 4 by squeezing from the surface side of the absorbent body 4, or may be applied integrally to the encapsulating sheet and the absorbent body 4 by squeezing from the front surface side of the encapsulated sheet. If at least the high pressure portion 23 is provided in the absorbent body 4, deformation of the concave groove at the time of mounting can be prevented, and body fluid can easily diffuse along the longitudinal direction of the groove.
- the corrugated first emboss 24 extends in the groove width direction and inclines in the groove longitudinal direction in the unit section 26 in which the concave groove 22 is partitioned in the longitudinal direction, and is on one side end of the concave groove 22. If the unit section 26 is formed in a pattern in which the unit section 26 is repeatedly reversed in the longitudinal direction of the groove, the protrusion projecting outward in the width direction is formed as shown in FIG.
- the parts 24a and 24b may be formed in a triangular shape, a trapezoidal shape, or a rectangular shape.
- the planar shape is formed in a graphic pattern such as (A) semicircle or (B) triangle.
- the second emboss 25 is formed in a semicircular pattern in which the outline of the emboss is a curve in accordance with this curve.
- the second emboss 25 has an embossed outline in accordance with the zigzag line. It is preferable to form with a triangular pattern that is a straight line.
Abstract
Description
前記高圧搾部は、前記凹溝を溝長手方向に区画した単位区間において、溝幅方向に延び溝長手方向に傾斜する傾斜要素を含むとともに、前記凹溝の一方側の側端から他方側の側端まで実質的に横断して形成され、前記単位区間の高圧搾部を溝長手方向に繰り返し正反転させたパターンで形成されている吸収性物品を提案した。
前記高圧搾部は、前記凹溝を長手方向に区画した単位区間において、溝幅方向に延び溝長手方向に傾斜するとともに、前記凹溝の一方側の側端から他方側の側端まで横断して形成され、この単位区間を溝長手方向に繰り返し正反転させたパターンで形成された第1エンボスと、前記第1エンボスが幅方向外側に突出する凸部と反対側の側縁部に、前記凹溝に沿って形成された第2エンボスとから構成され、
前記第1エンボスと第2エンボスとが離間して設けられていることを特徴とする吸収性物品が提供される。
本発明に係る失禁パッド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、尿など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、必要に応じて前記透液性表面シート3と吸収体4との間に配置される親水性のセカンドシート6と、前記吸収体4の略側縁部を起立基端とし、かつ少なくとも体液排出部位Hを含むように長手方向に所定の区間内において肌側に突出して設けられた左右一対の立体ギャザーBS、BSを形成するサイド不織布7、7とから主に構成され、かつ前記吸収体4の周囲においては、その長手方向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等の接着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とがホットメルトなどの接着剤やヒートシール等の接着手段によって接合されている。前記吸収体4は、形状保持および拡散性向上のために、図示しないクレープ紙や不織布等の被包シートによって囲繞することができる。
前記不透液性裏面シート2は、ポリエチレン、ポリプロピ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、この他に防水フィルムを介在して実質的に不透液性を確保した上で不織布シート(この場合には、防水フィルムと不織布とで不透液性裏面シートを構成する。)などを用いることができる。近年はムレ防止の観点から透湿性を有するものが好適に用いられる傾向にある。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。
本失禁パッド1では、表面側(肌面側)に長手方向に沿って体液流入用の凹溝22が形成されている。前記凹溝22は、透液性表面シート3の表面に排出された体液を受け止めて、体液を一時貯留するとともに、前後方向に体液の拡散を誘導し、且つ吸収体4への体液の吸収速度を速め、横漏れを防止するためのものである。
以下、前記高圧搾部23について説明する。前記高圧搾部23は、周辺の凹溝22の底面より更に深く圧搾された部分であり、凹溝22の底面に所定のパターンで形成されている。具体的に、前記高圧搾部23は、図5に示されるように、平面視で、凹溝22を長手方向に区画した単位区間26において、溝幅方向に延び溝長手方向に傾斜するとともに、前記凹溝22の一方側の側端から他方側の側端まで横断して形成され、この単位区間26を溝長手方向に繰り返し正反転させた、全体として前記凹溝22に沿うとともに、前記凹溝22の両側縁を往復するように幅方向両側に凹凸を繰り返すパターンで形成された波状の第1エンボス24と、前記波状の第1エンボス24が幅方向外側に突出する凸部24a、24bと対向する反対側の前記凹溝22の側縁部に、前記凹溝22に沿って形成された第2エンボス25とから構成されている。
(1)上記形態例では、前記高圧搾部23は、透液性表面シート3の表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にかけての構成部材に一体的に付与していたが、吸収体4の表面側からの圧搾により吸収体4のみに付与するか、又は被包シートの表面側からの圧搾により被包シート及び吸収体4に一体的に付与したものでもよい。少なくとも吸収体4に前記高圧搾部23を設けておけば、装着時の凹溝の変形が防止できるとともに、溝長手方向に沿って体液が拡散しやすくなる。
(2)前記波状の第1エンボス24は、前記凹溝22を長手方向に区画した単位区間26において、溝幅方向に延び溝長手方向に傾斜するとともに、前記凹溝22の一方側の側端から他方側の側端まで横断して形成され、この単位区間26を溝長手方向に繰り返し正反転させたパターンで形成されていれば、図8に示されるように、幅方向外側に突出する凸部24a、24bが三角形状に形成されたものや、台形状、四角形状に形成されたものでもよい。
(3)前記第2エンボス25は、凹溝22に沿って形成してあれば、図9に示されるように、平面形状が(A)半円形や(B)三角形などの図形パターンで形成してもよい。また、図9(A)に示されるように、波状の第1エンボス24を曲線で形成した場合、この曲線に合わせて前記第2エンボス25はエンボスの外形線が曲線となる半円形パターンで形成するのが好ましく、同図9(B)に示されるように、波状の第1エンボス24を直線のジグザグ線で形成した場合、このジグザグ線に合わせて前記第2エンボス25はエンボスの外形線が直線となる三角形パターンで形成するのが好ましい。
Claims (4)
- 透液性表面シートと裏面シートとの間に吸収体が介在されるとともに、前記吸収体の透液性表面シート側の面に略長手方向に沿う凹溝が形成され、かつ前記凹溝の底面に高圧搾部が形成された吸収性物品であって、
前記高圧搾部は、前記凹溝を長手方向に区画した単位区間において、溝幅方向に延び溝長手方向に傾斜するとともに、前記凹溝の一方側の側端から他方側の側端まで横断して形成され、この単位区間を溝長手方向に繰り返し正反転させたパターンで形成された第1エンボスと、前記第1エンボスが幅方向外側に突出する凸部と反対側の側縁部に、前記凹溝に沿って形成された第2エンボスとから構成され、
前記第1エンボスと第2エンボスとが離間して設けられていることを特徴とする吸収性物品。 - 前記第1エンボスは、幅方向外側に突出する凸部が曲線によって形成されている請求項1記載の吸収性物品。
- 前記第2エンボスは、前記凹溝に沿う直線によって形成されている請求項1、2いずれかに記載の吸収性物品。
- 前記第1エンボスと第2エンボスとの離間幅は、2mm以上5mm以下である請求項1~3いずれかに記載の吸収性物品。
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US15/316,302 US10342716B2 (en) | 2014-06-13 | 2015-06-11 | Absorbent article |
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JP6242423B2 (ja) * | 2016-03-29 | 2017-12-06 | 大王製紙株式会社 | 吸収性物品 |
JP6458102B1 (ja) * | 2017-08-30 | 2019-01-23 | 大王製紙株式会社 | 吸収性物品 |
EP3560466B1 (en) * | 2018-04-27 | 2023-08-23 | The Procter & Gamble Company | Absorbent articles with multi-pieces acquisition layer |
JP6937733B2 (ja) * | 2018-10-31 | 2021-09-22 | ユニ・チャーム株式会社 | 吸収性物品 |
KR102454101B1 (ko) * | 2020-03-20 | 2022-10-14 | 주식회사 디알컴퍼니 | 요실금 팬티 |
JP2023065958A (ja) * | 2021-10-28 | 2023-05-15 | 大王製紙株式会社 | 吸収性物品 |
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