WO2016136943A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2016136943A1
WO2016136943A1 PCT/JP2016/055812 JP2016055812W WO2016136943A1 WO 2016136943 A1 WO2016136943 A1 WO 2016136943A1 JP 2016055812 W JP2016055812 W JP 2016055812W WO 2016136943 A1 WO2016136943 A1 WO 2016136943A1
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WO
WIPO (PCT)
Prior art keywords
liquid
permeable surface
surface sheet
sheet
opening
Prior art date
Application number
PCT/JP2016/055812
Other languages
English (en)
Japanese (ja)
Inventor
美帆子 倉持
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 WO2016136943A1 publication Critical patent/WO2016136943A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations

Definitions

  • the present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, disposable paper diapers for absorbing bodily fluids such as menstrual blood, vaginal discharge, and urine, and more specifically, an uneven pattern is formed on a liquid-permeable surface sheet. It is related with the provided absorbent article.
  • the surface material of absorbent articles it has been given an appropriate embossed pattern according to various purposes such as reducing the contact area to the skin to reduce the moist feeling, or giving the texture and enhancing the touch. Is offered to the market. Further, as the surface material, those having appropriate openings formed for various purposes such as increasing the absorption rate of body fluids and eliminating the stickiness by eliminating liquid residue on the surface have been developed. As this kind of thing, the following patent documents 1 and 2 etc. can be mentioned, for example.
  • an absorption including a liquid-retaining absorbent having a through-hole penetrating between a skin-side surface and a clothing-side surface, and the top sheet covers the inside of the through-hole of the absorbent body A sex product is disclosed.
  • the top sheet has a non-woven fabric layer constituting at least a skin contact surface layer, and a multilayer sheet having a plastic film layer laminated on the non-skin contact surface side with respect to the nonwoven fabric layer;
  • the plastic film layer is made of a material having a lower melting point than the nonwoven fabric layer, and is heated outwardly on the topsheet under a heating condition that is not less than the melting point of the plastic film layer and less than the melting point of the nonwoven fabric layer.
  • An absorptive article which has been subjected to an embossing process of a concavo-convex shape made up of a number of protruding parts protruding into the surface, and of which a convex embossed part or a concave embossed part is subjected to a hole opening treatment. ing.
  • first embosses and second embosses are formed in a lattice shape along the longitudinal direction and the width direction of the absorbent article, and the first defined regions adjacent to each other are surrounded by the four corners.
  • a second defined area is provided to include the second embossment disposed in each first defined area;
  • a first convex portion that bulges to the skin side with the first embossing and the second embossing as base ends is formed in the first defining region, and at least the second embossing is formed in the second defining region.
  • the first emboss is arranged so that the center is positioned on the imaginary line to be closed, and the second emboss is in the middle of the adjacent first embosses along the imaginary line.
  • positioned so that a center may be located inside the said virtual line was proposed.
  • the second convex portion surrounded on the four sides by the first convex portion and its periphery act as a temporary body fluid storage space, and the first convex portion of the portion provided with the second embossing
  • the body fluid can easily flow into the body fluid storage space along the slope, and it is difficult for the body fluid to remain on the skin surface, so that the sensation can be improved.
  • a main problem of the present invention is to provide an absorbent article that eliminates skin troubles, prevents a sticky feeling when absorbing bodily fluids, and allows the bodily fluids to be quickly transferred to the absorbent body.
  • an absorbent article in which an absorber is interposed between a liquid-permeable top sheet and a back sheet, Formed on the liquid-permeable surface sheet are a number of first protrusions that bulge to the skin side and a number of second protrusions that bulge to the skin side at a relatively lower height than the first protrusions.
  • An absorbent article is provided in which an opening penetrating the liquid-permeable surface sheet is provided in the second convex portion of the liquid-permeable surface sheet.
  • the liquid-permeable surface sheet bulges to the skin side at a relatively lower height than the first convex portions and a number of first convex portions that bulge to the skin side. Since the concave / convex pattern consisting of many second convex parts is provided, the contact area between the liquid-permeable surface sheet and the skin is reduced, and skin troubles such as rubbing, fogging and itching are reduced, and body fluids are absorbed. It becomes possible to prevent the sticky feeling in the case.
  • the opening which penetrates this liquid-permeable surface sheet is provided in the said 2nd convex part of the said liquid-permeable surface sheet, the bodily fluid made into the sticky stick as well as the low-viscosity body fluid Even in this case, the liquid-permeable surface sheet can be easily passed through the opening, there is no liquid residue on the surface, and the sticky feeling at the time of body fluid absorption can be eliminated.
  • the opening is formed on the second convex portion having a relatively lower height, avoiding the first convex portion, the shape of the first convex portion bulging to the skin side is formed. It is maintained, and skin troubles are not caused by providing the opening.
  • the hole is formed by pin embossing the second convex portion from the surface side of the liquid-permeable surface sheet. Since the body fluid that has passed through the opening enters the recess of the absorber, the absorber is quickly absorbed by the absorber.
  • the peripheral edge portion of the opening is provided so as to be separated to the skin side without being connected to a member disposed on the non-skin side from the liquid-permeable surface sheet.
  • An absorbent article according to any one of Items 1 to 3 is provided.
  • the peripheral edge of the opening is separated to the skin side without being connected to a member disposed on the non-skin side from the liquid-permeable surface sheet such as an absorber.
  • the body fluid that has passed through the liquid-permeable surface sheet through the opening can be prevented from returning to the skin side through the opening again.
  • the present invention according to claim 6 provides the absorbent article according to any one of claims 1 to 5, wherein the area of the opening is 0.01 mm 2 to 8 mm 2 .
  • the opening at least in a region corresponding to the body fluid discharge portion, the body fluid in this region is absorbed well, and a sticky feeling at the time of body fluid absorption can be prevented. No longer occurs.
  • first embosses and second embosses are intermittently applied to the liquid-permeable surface sheet, and the first embosses and second embosses are arranged in a predetermined pattern.
  • the first defined areas are provided in a lattice shape along the longitudinal direction and the width direction of the absorbent article, and the first defined areas adjacent to each other are surrounded by the four corners.
  • a second defining region is provided to include the second embossment disposed; The first convex portion bulging toward the skin side with the first embossing and the second embossing as base ends is formed in the first defining region, and at least the second embossing is formed in the second defining region.
  • the second convex part bulging to the skin side from the base end is formed,
  • the first emboss is arranged so that the center is positioned on the imaginary line to be closed, and the second emboss is in the middle of the adjacent first embosses along the imaginary line.
  • An uneven liquid-permeable surface sheet having a large number of two convex portions is provided. Since the second convex part which bulges relatively low on the skin side is formed in the region surrounded by the four corners by the first convex part which bulges relatively high on the skin side, the second convex part and The surrounding area becomes a temporary body fluid storage space surrounded on all four sides by the first convex portion.
  • This body fluid storage space becomes a larger space than the case where the first convex portion and the second convex portion are configured at the same height, and a large amount of body fluid can be temporarily stored.
  • the sensation can be improved and the body fluid can be quickly transferred from the second convex portion and its periphery to the absorber.
  • FIG. 3 is an enlarged plan view of a liquid permeable top sheet 3.
  • FIG. 3 is a view taken along the line III-III in FIG. 2.
  • FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. It is sectional drawing of the conventional absorbent article which shows the state at the time of body fluid discharge
  • FIG. 3 is an enlarged plan view of a first definition region 12.
  • FIG. 7 is a view taken along line VII-VII in FIG. 6.
  • FIG. 8 is a view taken along the line VIII-VIII in FIG. 6.
  • FIG. 4 is a view taken along the line IV-IV in FIG. 2 according to another embodiment.
  • It is an expanded view of the sanitary napkin 1 which concerns on another form example. It is sectional drawing which shows the uneven
  • the sanitary napkin 1 is a liquid-impermeable back sheet 2 made of a polyethylene sheet, a polypropylene sheet, etc.
  • a liquid surface sheet 3 an absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3, and the liquid-permeable surface sheet 3 and the absorbent body 4 were provided.
  • a hydrophilic second sheet 5 is provided.
  • 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 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 the spunbond method is excellent in drapeability
  • the thermal bond method and the air-through method are excellent in terms of being bulky and having high compression recovery properties.
  • the absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is composed of, for example, cotton-like pulp and a highly water-absorbing polymer.
  • superabsorbent polymer superabsorbent polymer granular powder (SAP) or superabsorbent polymer fiber (SAF) can be used.
  • 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.
  • the manufacturing method of the absorber 4 is preferably made of piled pulp so as to be rich in flexibility, it may be an airlaid absorber capable of reducing the bulk.
  • the absorbent body 4 may be surrounded by an encapsulating sheet (not shown) made of crepe paper, non-woven fabric, or the like for shape retention and diffusibility improvement.
  • 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.
  • the hydrophilic second sheet 5 disposed between the liquid-permeable surface sheet 3 and the absorbent body 4 may be anything as long as it has hydrophilicity with respect to the body fluid. 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.
  • the second sheet 5 is bonded to the back side (non-skin side) of the liquid-permeable surface sheet 3 by heat-sealing (embossing), and the liquid-permeable surface sheet is left in a laminated state. 3 and the embossing 10 and 11 are processed.
  • the second sheet 5 and the absorbent body 4 are joined with a hot melt adhesive or the like.
  • menstrual blood or the like can quickly penetrate into the absorbent body 4 from the second sheet 5 and be absorbed.
  • the liquid-permeable surface sheet 3 has a large number of first protrusions 14, 14... A large number of second convex portions 15, 15... Bulging toward the skin side at a relatively lower height are formed.
  • the first convex portion 14 and the second convex portion 15 will be specifically described below.
  • first convex portion 14 and the second convex portion 15 As shown in FIG. 2, the skin of the liquid-permeable surface sheet 3 is formed on the liquid-permeable surface sheet 3 and the second sheet 5.
  • a number of first embosses 10 and second embosses 11 are intermittently applied by embossing from the surface side (surface side).
  • the intermittent application of the first emboss 10 and the second emboss 11 means that the embossed portions by the embosses 10 and 11 and the spaced portions to which no embossing is applied are alternately formed, and the napkin width direction or longitudinal direction This means that no continuous emboss line is applied.
  • the liquid-permeable surface sheet 3 and the second sheet 5 are joined by the first emboss 10 and the second emboss 11.
  • first embossing 10 and the second embossing 11 known embossing means such as thermal embossing and ultrasonic embossing can be adopted.
  • the liquid-permeable surface sheet 3 includes a first defining region 12 in which the first emboss 10 and the second emboss 11 are arranged in a predetermined pattern, and the longitudinal direction and width of the sanitary napkin 1. At least the second emboss 11 provided in the first defining region 12 is provided in a lattice shape along the direction, and at the four corners surrounded by the adjacent first defining regions 12, 12. It is preferable that the second defining region 16 is provided so as to include In the example shown in FIG. 2, the second defined area 16 is an embossed pattern in which the second embossed elements 11 arranged in the surrounding first defined area 12 are arranged one by one at the four corners. The second defined area 16 includes at least the second emboss 11 disposed in the first defined area 12. Therefore, the second defined area 16 is provided so as to partially overlap the first defined area 12.
  • the first defining region 12 may be partitioned so that a part of the first embossing regions 12, 12 are adjacent to each other (first embossing 10). However, the first defining regions 12 and 12 may be arranged so as to be separated from each other (so as not to have the first emboss 10 common to the adjacent first defining regions 12 and 12).
  • the first defined area 12 is formed with a relatively larger area than the second defined area 16. Further, the number of the embosses 10 and 11 provided in the first definition region 12 is relatively larger than the number of the embosses provided in the second definition region 16.
  • the first defining region 12 is formed with a first protrusion 14 bulging toward the skin with the first emboss 10 and the second emboss 11 as the base ends.
  • the second defining region 16 is formed with a second convex portion 15 that bulges toward the skin at a relatively lower height than the first convex portion 14 with at least the second emboss 11 as a base end. Has been.
  • the first convex portion 14 and the second convex portion 15 are formed by causing the liquid-permeable surface sheet 3 to bulge from the second sheet 5 to the skin side, A dome-shaped space is provided between the liquid-permeable surface sheet 3 and the second sheet 5.
  • the volume of the space is formed so that the first protrusion 14 is relatively larger than the second protrusion 15, and the height of the space is the second protrusion 15 of the first protrusion 14. It is formed relatively larger.
  • the height H2 bulging to the skin side of the second convex portion 15 (from the non-skin surface of the second sheet 5 at the top of the second convex portion 15 to the skin surface of the liquid-permeable surface sheet 3) Is the height H1 bulging to the skin side of the first convex portion 14 (from the non-skin surface of the second sheet 5 at the top of the first convex portion 14 to the skin surface of the liquid-permeable surface sheet 3). It is set relatively lower than (height) (H1> H2).
  • the height H1 of the first convex portion 14 is preferably 2.1 mm to 4.0 mm
  • the height H2 of the second convex portion 15 is preferably 1.0 mm to 2.0 mm.
  • the difference (H1 ⁇ H2) between the height H1 of the first protrusion 14 and the height H2 of the second protrusion 15 is preferably 0.5 mm to 3.0 mm.
  • the contact area between the liquid-permeable surface sheet 3 and the skin surface is reduced, so that a feeling of touch is improved. That is, the contact point between the liquid-permeable surface sheet 3 and the skin surface becomes the top of the first convex portion 14 that bulges relatively high toward the skin side, and contacts the skin surface in a plurality of points. Is reduced and the skin contact is improved. Moreover, since the contact with the skin surface becomes a plurality of points, and there is a space between the skin surface and other than the contact portion, the fluidity of the body fluid is improved through this space, and the body fluid is easily transferred to the absorber.
  • the following effects are produced when the second convex portion 15 bulges to the skin side at a relatively lower height than the first convex portion 14.
  • a temporary body fluid storage space S surrounded by the first protrusions 14, 14... Will be formed. Even when a large amount of bodily fluid that cannot be held in the space between the first convex portion 14 and the second convex portion 15 is discharged, the body fluid storage space S has a stored water level from the height H2 of the second convex portion 15. The body fluid can be held by expanding to the height H1 of the first convex portion 14 that has been raised.
  • the liquid-permeable surface sheet 3 is in contact with the skin surface at the top of the first convex portion 14, and therefore accumulates in the body fluid storage space S.
  • the body fluids are less likely to adhere to the skin surface, so that you can maintain a dry feeling.
  • the bodily fluid temporarily stored in the bodily fluid storage space S is the opening 20 provided in the surface of the embosses 10 and 11, the 1st convex part 14, the 2nd convex part 15, and the 2nd convex part 15 explained in full detail behind. To the absorber 4 quickly.
  • first convex portion 14 and the second convex portion 15 and the convex portions having the same height are formed as shown in FIG. Only a gap could be used as a body fluid storage space, and when a large amount of body fluid was discharged, the body fluid stored water level increased and the body fluid contacted the skin surface, causing stickiness.
  • the emboss pattern provided in the first defining region 12 and the cross-sectional shape of the first convex portion 14 will be described in detail with reference to FIGS.
  • the first embossing 10 is arranged such that the center C 10 of the first embossing 10 is positioned on the imaginary line 13 to be closed.
  • the first embossing 10 is, when subtracting the imaginary line 13 passing through the plurality of first embossing 10, 10 ... center C 10 of the present in the first defined area 12, the virtual line 13 is oval, It is formed by a closed shape line such as a circle or a polygon.
  • the virtual line 13 is preferably formed in an elliptical shape that is long in the longitudinal direction of the sanitary napkin 1.
  • the first embosses 10, 10... In the first defining region 12 are preferably arranged intermittently so that the centers C 10 , C 10 .
  • the gradient of the outer contour of the first convex portion 14 in the elliptical short direction (napkin width direction) is the outer contour of the first convex portion 14 in the elliptical longitudinal direction (napkin longitudinal direction).
  • the bodily fluid existing at the top of the first convex portion 14 is likely to flow in an elliptical short direction (napkin width direction) having a steep slope.
  • the body fluid easily flows into the body fluid storage space S formed in the hand direction.
  • the plane dimension of the imaginary line 13 is preferably such that the longitudinal dimension L 13 is 4.0 mm to 10.0 mm and the short dimension W 13 is 3.5 mm to 7.5 mm.
  • the first emboss 10 is intermittently disposed along the virtual line 13.
  • the number of the first embosses 10 arranged along the imaginary line 13 may be at least 3, preferably 4 to 8, and more preferably 4 shown in FIG.
  • the center C 10 is arranged so as to be positioned at the intersection.
  • the first emboss 10 is preferably formed with a relatively larger area than the second emboss 11.
  • the area of the first emboss 10 is 2 to 4 times, preferably about 3 times the area of the second emboss 11.
  • the 1st embossing 10, 10 ... will be formed more clearly, the 1st convex part 14 which bulges to the skin side will be mentioned later provided by providing the said 2nd embossing 11, 11 ....
  • the flow-promoting slope 17 becomes clearer, and body fluid easily flows along the flow-promoting slope 17.
  • the area of the first emboss 10 and the second emboss 11 is the area of the bottom surface of each emboss 10, 11.
  • the first emboss 10 and the second emboss 11 may be formed with the same area, or the second emboss 11 may be formed with a larger area than the first emboss 10.
  • the planar shape of the first emboss 10 is preferably an oval shape whose both side edges are straight lines and whose both end edges are semicircular arcs.
  • the oval first emboss 10 is preferably oriented in the longitudinal direction in the tangential direction of the virtual line 13.
  • the region surrounded by the first embosses 10, 10 Bulges more clearly to the skin side, and the first convex portion 14 can be formed exactly.
  • the planar shape of the first emboss 10 may be formed in various forms such as a circle, an ellipse, a quadrangle, and a polygon in addition to an oval.
  • the longitudinal dimension L 10 is 1.0 mm to 5.0 mm.
  • a short-hand size W 10 is preferred to the 0.5mm ⁇ 3.0mm.
  • the second emboss 11 is in the middle between the adjacent first embosses 10 and 10 along the virtual line 13, and the center C 11 of the second emboss 11 is the virtual line. It is arranged so as to be located inside 13. That is, the center C 11 of the second emboss 11 is arranged so as to have an eccentric amount U in the radial direction inside the virtual line 13.
  • the eccentric amount of time of the center C 11 is positioned from the virtual line 13 on the inner side of the second embossing 11 U (radial distance between the imaginary line 13 between the center C 11 and the virtual line 13 of the second embossing 11)
  • the imaginary line 13 may be in a range that passes through the emboss of the second emboss 11. That is, when the second emboss 11 is circular, the eccentric amount U is preferably within the radius of the second emboss 11. If it is decentered inward from this, the bulging height of the first convex portion 14 is lowered by the second emboss 11, and the flow of body fluid due to the inclination of the first convex portion 14 may be hindered.
  • the second emboss 11 preferably has a circular planar shape.
  • the circular arc part which bulges to the center side of the virtual line 13 opposes the curved surface which bulges outside the 1st convex part 14, and the below-mentioned flow by the 2nd emboss 11 The promotion slope 17 can be formed exactly.
  • the planar shape of the second emboss 11 can be formed in various forms such as an oval, an ellipse, a quadrangle, and a polygon in addition to a circle.
  • the second emboss 11 is formed in a planar shape having a longitudinal direction and a short direction, it is preferably arranged so that the longitudinal direction is parallel to the tangential direction of the adjacent virtual line 13.
  • the width (diameter in the case of a circle) of the second emboss 11 is preferably formed to be substantially the same as the width (short dimension in the case of an oval) of the first emboss 10.
  • a flow-promoting slope 17 described later is provided. Can be reliably formed.
  • One or a plurality of the second embosses 11 can be arranged between the first embosses 10 and 10 adjacent to each other along the virtual line 13.
  • one second emboss 11 is arranged at the center between the adjacent first embosses 10 and 10. That is, with respect to the elliptical imaginary line 13, the first emboss 10 is disposed at each apex in the longitudinal direction and the short direction, and the second emboss 11 is disposed at an intermediate portion thereof.
  • the first defined regions 12 are arranged in a grid pattern vertically and horizontally, the first defined regions 12, 12... , Four second embosses 11, 11... Are located.
  • positioning two or more 2nd embossing 11 ... between the 1st embossing 10 and 10 it is good to arrange
  • the cross-sectional shape of the first convex portion 14 formed in the first defined region 12 will be described.
  • the cross-sectional shape of the first protrusion 14 is based on the first embosses 10 and 10 as shown in FIG. 7 in a cross-section passing through the center of the adjacent first embosses 10 and 10 (cross-section in the napkin width direction). It is formed in a dome-like outer shape that bulges outward with the imaginary line 13 as the bottom.
  • the second emboss 11 is applied to the inner side of the dome-shaped outer shape formed by the first emboss 10.
  • the flow-promoting slope 17 is formed with a relatively steep slope from the outer shape line. As shown in FIG. 6, the flow-promoting slope 17 is formed so as to extend from the second emboss 11 to the center of the first convex portion 14 over a predetermined range.
  • the body fluid is steeply inclined by applying the second emboss 11. It becomes easy to flow toward the flow-promoting slope 17 and becomes easy to flow into the body fluid storage space S to which the second emboss 11 is applied. Therefore, liquid does not remain on the surface of the liquid-permeable surface sheet 3, and body fluid does not easily adhere to the skin surface, so that the smoothness of the surface can be improved.
  • first emboss 10 and the second emboss 11 are provided intermittently, the influence of the hardness due to the emboss is small, and the good texture can be maintained.
  • the second embossed areas 11 each of which has at least the second embossed areas 11 of the first defined areas 12 arranged in the surrounding four sides
  • the 2nd convex part 15 is formed when the liquid-permeable surface sheet 3 of the area
  • the second defined area 16 is provided so as to include one second emboss 11 arranged in each of the first defined areas 12 arranged in the surrounding four directions. Thus, a total of four second embosses 11, 11... Are arranged.
  • the second definition area 16 may include two or more second embosses 11 disposed in each first definition area 12 or may include the first emboss 10.
  • the four second embosses 11, 11,... are arranged so that the center is located on the second imaginary line 18 to be closed.
  • the second imaginary line 18 is preferably oval long in the napkin longitudinal direction, but may be circular, polygonal, or oval long in the napkin width direction.
  • the planar dimensions of the second imaginary line 18 are preferably such that the long dimension L 18 is 2.0 mm to 4.0 mm and the short dimension W 18 is 2.0 mm to 3.5 mm. .
  • the cross-sectional shape of the second convex portion 15 is formed in a dome shape whose outer shape bulges outward in any cross-sectional view as shown in FIG.
  • the second convex portion 15 formed in the second defining region 16 is provided in the body fluid storage space S, the second emboss 11 serving as the base end of the second convex portion 15 is The body fluid storage space S is formed. For this reason, the bodily fluid accumulated in the bodily fluid storage space S is easily absorbed by the absorber 4 through the second emboss 11.
  • the ratio of the first emboss 10 and the second emboss 11 overlapping the imaginary line 13 is preferably 30% to 80% with respect to the length of the imaginary line 13, 65% ⁇ 75% is more preferred.
  • a circular or elliptical second imaginary line 18 passing through the center of the second embossing 11, 11... Is drawn in the second defining region 16 the second embossing 11 is placed on the second imaginary line 18. Is preferably 30% to 80%, more preferably 35% to 45% with respect to the length of the second virtual line 18.
  • the embossing ratio on the imaginary lines 13 and 18 is 30.
  • the ratio is less than%, the effect of absorbing body fluid is less likely to be produced.
  • the ratio is greater than 80%, the hardness due to embossing is easily felt.
  • the liquid-permeable surface sheet 3 is penetrated in the thickness direction in the second convex portion 15 of the liquid-permeable surface sheet 3 provided with the above-described uneven pattern.
  • An opening 20 is provided.
  • the liquid-permeable surface sheet 3 can be easily passed through the apertures 20 and a liquid residue on the surface is generated. Difficult to eliminate stickiness when absorbing body fluids.
  • the sanitary napkin 1 has a structure in which bodily fluid easily flows into the bodily fluid storage space S in which the second convex portion 15 is provided by forming the flow-promoting slope 17 on the first convex portion 14 as described above. Therefore, the body fluid that has flowed into the body fluid storage space S can easily pass through the liquid-permeable surface sheet 3 through the opening 20 formed in the second convex portion 15.
  • the opening 20 provided in the liquid-permeable surface sheet 3 is formed in the second convex portion 15 having a relatively lower height, avoiding the first convex portion 14, so that the first The state in which the convex portion 14 is higher than the second convex portion 15 and bulges to the skin side can be maintained, and the first convex portion 14 is in contact with the skin surface. No fear.
  • the second convex portions 15, 15 are formed in a state in which a laminate of the liquid-permeable surface sheet 3 and the second sheet 5 provided with the above-described uneven pattern is laminated on the skin surface of the absorbent body 4.
  • the openings 20 and 22 are formed in the liquid-permeable surface sheet 3 and the second sheet 5, respectively, and a recess is formed on the surface of the absorbent body 4 on the liquid-permeable surface sheet 3 side. 21 is formed, so that the liquid-permeable surface sheet 3 and the second sheet 5 through the apertures 20 and 22 can be used not only for dry menstrual blood having low viscosity but also for menstrual blood having high viscosity and stickiness. Is easy to pass, liquid residue on the surface hardly occurs, and the sticky feeling at the time of body fluid absorption is eliminated.
  • the body fluid that has passed through the openings 20 and 22 enters the recessed portion 21 of the absorber 4 so that the body fluid is quickly absorbed by the absorber 4.
  • the pin embossing is a needle-like needle shape in which the tip is thin and sharp from the surface side of the liquid-permeable surface sheet 3 in a state where the second sheet 5 and the liquid-permeable surface sheet 3 are laminated on the skin surface of the absorbent body 4.
  • openings 20 and 22 are formed in the liquid-permeable surface sheet 3 and the second sheet 5, respectively, and a recess 21 is formed in the absorbent body 4.
  • the pin embossing is formed on the same axis with respect to the napkin thickness direction from the top of the second protrusion 15 by piercing the needle-like protrusion into the top of the second protrusion 15 bulging in a dome shape.
  • 20, 22 and the recess 21 are formed.
  • the opening 20 of the liquid-permeable surface sheet 3 is a through-hole through which the liquid-permeable surface sheet 3 is penetrated in the thickness direction between the front surface side and the back surface side by the pin embossing.
  • the opening 20 is preferably formed in a circular shape in plan view, but may be formed in an elliptical shape, an oval shape, or a polygonal shape.
  • the peripheral portion of the opening 20 of the liquid-permeable surface sheet 3 is disposed on the non-skin side from the liquid-permeable surface sheet 3. Without being connected to the member (second sheet 5 or absorber 4) to be formed, it may be provided on the skin side away from this member, and as shown in FIG. 9, the recess 21 of the absorber 4 is covered. You may form so that it may do.
  • the liquid-permeable surface sheet 3 bulges in a dome shape on the skin side in the second convex portion 15 with the opening 20 formed in the liquid-permeable surface sheet 3.
  • a state in which a dome-shaped space is formed between the liquid-permeable surface sheet 3 and the second sheet 5 is maintained.
  • body fluid that has passed through the liquid-permeable surface sheet 3 through the opening 20 can be further prevented from returning to the skin side.
  • the tip is particularly thin and sharp when the pin embossing is performed.
  • the opening 20 is smoothly formed without the liquid-permeable surface sheet 3 being pulled toward the absorber 4 side.
  • the liquid-permeable surface sheet 3 is made of a thermoplastic material, and pin holes are embossed with needle-like protrusions heated to a predetermined temperature, so that the liquid-permeable surface sheet 3 is softened and the openings 20 are formed. You may make it form.
  • the peripheral edge of the opening 20 may be formed such that the left and right edges are opposed to each other without extending to the non-skin side. It may be formed to be bent to the side and slightly extend to the non-skin side to the extent that it does not contact the non-skin-side second sheet 5 or the absorbent body 4.
  • the peripheral portion of the opening 20 of the liquid-permeable surface sheet 3 and the peripheral portion of the opening 22 of the second sheet 5 are each stretched toward the absorber 4, It is formed so as to cover the inner surface of 21.
  • the body fluid that has passed through the opening 20 of the liquid-permeable surface sheet 3 enters the recess 21 of the absorbent body 4 as it is along the peripheral edge of the stretched opening 20, and this recess Absorption of body fluid through the absorber 21 to the absorber 4 is likely to occur.
  • a needle-like protrusion having a slightly narrowed tip is used when pin embossing is performed.
  • the surface of the liquid-permeable surface sheet 3 is stabbed, it does not open in the portion that bulges to the skin side, and when the tip of the needle-like protrusion reaches the second sheet 5 or the absorber 4 portion, these It can be set as the structure which can penetrate the liquid-permeable surface sheet 3 by adding this reaction force.
  • the area of the opening 20 provided in the liquid-permeable surface sheet 3 is 0.1% to 50%, preferably 3% with respect to the area of the base end where the second convex portion 15 bulges to the skin side. It should be -30%, more preferably 5-15%. Specifically, the area of the opening 20 is 0.01 mm 2 to 8 mm 2 , preferably 0.1 mm 2 to 8 mm 2 , more preferably 0.3 mm 2 to 5 mm 2 .
  • the area of the aperture 20 is too small, viscous bloody menstrual blood cannot pass through, and if the area of the aperture 20 is too large, there is a risk that body fluid may return through the aperture 20, As the hole 20 is enlarged, the hollow portion 21 of the absorbent body 4 becomes larger, which causes a problem that the body fluid absorption capacity of the absorbent body 4 decreases.
  • the recess 21 is a recess obtained by pressing the absorber 4 to a predetermined depth by applying the pin emboss from the surface side of the absorber 4 (liquid permeable surface sheet 3 side).
  • the recess 21 does not penetrate to the back surface side of the absorber 4 and has the bottom of the absorber 4.
  • the recess 21 is formed substantially coaxially in the napkin thickness direction with respect to the opening 20 of the liquid-permeable surface sheet 3.
  • the fibers of the absorber are densely formed, and the action of drawing body fluid by the capillary action of the fibers is enhanced.
  • the recess 21 is preferably formed in a recess having a predetermined depth without penetrating the front and back sides of the absorber 4. Thereby, the bodily fluid absorption from the bottom part of the hollow part 21 is also attained, and it can suppress that the absorption capacity of the absorber 4 reduces.
  • the depth of the recess 21 is 20% to 90%, preferably 30% to 60% of the thickness of the absorber 4.
  • the cross-sectional shape of the recess 21 is preferably formed in a conical shape that becomes thinner toward the bottom.
  • the area of the depression 21 on the skin side surface of the absorbent body 4 is such that the depression 21 is formed by piercing a needle-like protrusion from the surface side of the liquid-permeable surface sheet 3. It is formed to be approximately equal to or smaller than the opening 20, specifically 0.01 mm 2 to 6 mm 2 , preferably 0.1 mm 2 to 6 mm 2 .
  • the opening 22 of the second sheet 5 is a through hole that penetrates the second sheet 5 in the thickness direction between the front surface side and the back surface side by the pin embossing.
  • the opening 22 is formed substantially coaxially with the opening 20 of the liquid-permeable surface sheet 3 in the napkin thickness direction.
  • the opening 22 is preferably formed in a circular shape in plan view, but may be formed in an elliptical shape, an oval shape, or a polygonal shape in accordance with the opening 20 of the liquid-permeable surface sheet 3. Is the area of the opening 22 substantially equal to the opening 20 of the liquid-permeable surface sheet 3 because the hole 22 is formed by piercing a needle-like protrusion from the surface side of the liquid-permeable surface sheet 3? It is formed smaller than that, specifically, 0.01 mm 2 to 7 mm 2 , preferably 0.1 mm 2 to 7 mm 2 .
  • the peripheral edge of the opening 22 may be formed so as to be separated from the skin side of the absorbent body 4 as shown in FIG.
  • the absorbent body 4 may be formed so as to cover the hollow portion 21.
  • the pin embossing may be applied to all the second convex portions 15, 15..., And as shown in FIG. 10, the region corresponding to the body fluid discharge portion of the wearer. May be applied only to
  • the pin embossing may be applied to all the second convex portions 15 existing in a predetermined region, or may be performed at a ratio of one at several places such as every other place or every other place. Also good.
  • a concavo-convex pattern processing apparatus 30 shown in FIG. 11 is used.
  • the concavo-convex pattern processing apparatus 30 corresponds to the surface on the surface of a plurality of convex portions corresponding to the first convex portions 14, a number of convex portions corresponding to the second convex portions 15, and the first emboss 10.
  • the first embossing roll 31 in which a large number of concave portions and a large number of concave portions corresponding to the second embossing 11 are disposed, the first embossing roll 31 and the first embossing roll 31 are disposed to face each other.
  • a second embossing roll 32 in which a number of concave portions corresponding to the convex portions of the roll 31 and a number of convex portions corresponding to the concave portions of the first embossing roll 31 are disposed, and a flat roll having a flat surface 33, and by passing the liquid-permeable surface sheet 3 between the first embossing roll 31 and the second embossing roll 32, the convex portion of the first embossing roll 31 and the second
  • the first convex portion 14 and the second convex portion 15 are processed by meshing with the concave portion of the embossing roll 32, and then the liquid-permeable surface sheet 3 runs on the surface of the second embossing roll 32,
  • the embossed portion of the conductive surface sheet 3 is laminated with the separately fed second sheet 5 while being held in the concave and convex portions of the second embossing roll 32, and the liquid-permeable surface sheet 3 and the second sheet are laminated
  • the first embossing 10 and the second embossing 11 are processed by the convex portions of the second embossing roll 32 by passing between the second embossing roll 32 and the flat roll 33 in a laminated state.
  • the liquid-permeable surface sheet 3 and the second sheet 5 are bonded by thermal fusion.
  • a plate-shaped or roll-shaped surface is provided with a large number of needle-like protrusions in a state where the laminated structure of the liquid-permeable surface sheet 3 and the second sheet 5 is laminated on the upper surface of the absorber 4.
  • the second convex portions 15 of the liquid-permeable surface sheet 3 are A method of performing pin embossing from the surface side of the liquid-permeable surface sheet 3 can be used.
  • the concavo-convex pattern processing of the liquid-permeable surface sheet 3 and the pin embossing may be simultaneously performed by the processing device 34 which is a modification of the concavo-convex pattern processing device 30.
  • the processing device 34 has a large number of convex portions 35 a, 35 a... Corresponding to the first convex portion 14 and a large number of convex shapes corresponding to the second convex portion 15 on the surface. .., A large number of concave portions (not shown) corresponding to the first emboss 10, a large number of concave portions 35 c, 35 c corresponding to the second emboss 11, and the second convex portion 15.
  • the first embossing roll 35 disposed on the top of the convex portion 35b corresponding to the first embossing roll 35 is disposed opposite to the first embossing roll 35, and the surface of the first embossing roll 35 is disposed on the surface.
  • 35a and the embossing of the concave portion 36a of the second embossing roll 36, the processing of the first convex portion 14 and the first embossing roll 35 Processing of the second convex portion 15 by meshing the concave portion 35b and the concave portion 36b of the second embossing roll 36, and the concave portion 35d of the first embossing roll 35 and the needle-like projection 36d of the second embossing roll 36,
  • the opening process of the opening 20 provided in the second convex portion 15 of the liquid-permeable surface sheet 3 is performed, and then the liquid-permeable surface sheet 3 travels on the surface of the second embossing roll 36, While the processed portion of the liquid surface sheet 3 is held by the concave portion,
  • the first embossing is performed by the opening treatment of the opening 22 provided in the second sheet 5 by meshing the lug-shaped protrusion 36d with the concave portion 37a of the third embossing roll 37, the convex portion 36c of the second embossing roll 36, and the like.
  • the liquid-permeable surface sheet 3 and the second sheet 5 are heat-fused and bonded by the 10 and the second emboss 11 and finally the liquid-permeable surface sheet 3 and the second sheet 5 are the second emboss rolls.
  • the processed portion of the liquid-permeable surface sheet 3 is held by the concave portion, the convex portion, and the needle-like protrusion 36d of the second embossing roll 36, and the opening treatment portion of the second sheet 5 is While being held by the needle-like protrusion 36d of the second embossing roll 36, it is laminated with the absorbent body 4 that is separately fed, and these liquid-permeable surface sheets 3 and seca
  • the needle-like protrusion 36d of the second embossing roll 36 is pierced into the absorbent body 4, thereby absorbing the absorbent body. 4 can be configured such that the recess 21 is processed.
  • the virtual line 13 is an ellipse that is long in the napkin longitudinal direction, but it may be circular or polygonal, or may be formed in a shape that is long in the napkin width direction.
  • the second sheet 5 may be made to function as an absorber by using a high-absorbent resin mixed in an air laid absorber, and the absorber 4 may be eliminated.

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

La présente invention permet d'éliminer des problèmes de peau et de prévenir une sensation collante lorsque des liquides organiques sont absorbés, et de rapidement transférer ces liquides organiques vers un corps absorbant. Plusieurs premières parties convexes (14) qui se déploient vers le côté peau et plusieurs secondes parties convexes (15) qui se déploient vers le côté peau à une hauteur relativement inférieure à celle des premières parties convexes (14) sont formées dans une feuille de surface (3) perméable aux liquides. Dans un état où la feuille de surface (3) perméable aux liquides et un corps absorbant (4) sont disposés en couches, un gaufrage est effectué sur les secondes parties convexes (15) à partir du côté surface de la feuille de surface (3) perméable aux liquides, afin de former des trous d'ouverture (20) dans cette feuille de surface (3) et former des parties concaves (21) dans la surface du corps absorbant du côté de la feuille de surface (3) perméable aux liquides.
PCT/JP2016/055812 2015-02-26 2016-02-26 Article absorbant WO2016136943A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015036447A JP6028054B2 (ja) 2015-02-26 2015-02-26 吸収性物品
JP2015-036447 2015-02-26

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Publication Number Publication Date
WO2016136943A1 true WO2016136943A1 (fr) 2016-09-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108784934A (zh) * 2018-04-16 2018-11-13 南京锦琪昶新材料有限公司 一种复合纤维材料及其制备方法、装置、应用
WO2019146596A1 (fr) * 2018-01-26 2019-08-01 株式会社瑞光 Feuille, dispositif de fabrication de feuille et procédé de fabrication de feuille

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7361556B2 (ja) * 2019-09-26 2023-10-16 大王製紙株式会社 吸収性物品
JP7351693B2 (ja) * 2019-09-26 2023-09-27 大王製紙株式会社 吸収性物品

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Publication number Priority date Publication date Assignee Title
JP2013212250A (ja) * 2012-04-02 2013-10-17 Unicharm Corp 吸収性物品
JP2014018647A (ja) * 2012-07-18 2014-02-03 Kang Na Hsing Enterprise Co Ltd 吸収性物品に用いられる表面シート、その製造方法及び製造装置
JP2014188129A (ja) * 2013-03-27 2014-10-06 Daio Paper Corp 吸収性物品

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Publication number Priority date Publication date Assignee Title
JP5421676B2 (ja) * 2009-07-07 2014-02-19 花王株式会社 吸収性物品用の表面シート

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Publication number Priority date Publication date Assignee Title
JP2013212250A (ja) * 2012-04-02 2013-10-17 Unicharm Corp 吸収性物品
JP2014018647A (ja) * 2012-07-18 2014-02-03 Kang Na Hsing Enterprise Co Ltd 吸収性物品に用いられる表面シート、その製造方法及び製造装置
JP2014188129A (ja) * 2013-03-27 2014-10-06 Daio Paper Corp 吸収性物品

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019146596A1 (fr) * 2018-01-26 2019-08-01 株式会社瑞光 Feuille, dispositif de fabrication de feuille et procédé de fabrication de feuille
JPWO2019146596A1 (ja) * 2018-01-26 2021-01-07 株式会社瑞光 シート、シートの製造装置、及びシートの製造方法
JP7033153B2 (ja) 2018-01-26 2022-03-09 株式会社瑞光 シートの製造装置及びシートの製造方法
CN108784934A (zh) * 2018-04-16 2018-11-13 南京锦琪昶新材料有限公司 一种复合纤维材料及其制备方法、装置、应用

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