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WO2012130149A1 - Article absorbant ayant une super perméabilité à l'air - Google Patents

Article absorbant ayant une super perméabilité à l'air Download PDF

Info

Publication number
WO2012130149A1
WO2012130149A1 PCT/CN2012/073251 CN2012073251W WO2012130149A1 WO 2012130149 A1 WO2012130149 A1 WO 2012130149A1 CN 2012073251 W CN2012073251 W CN 2012073251W WO 2012130149 A1 WO2012130149 A1 WO 2012130149A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
hole
absorbent article
permeable
absorbent
Prior art date
Application number
PCT/CN2012/073251
Other languages
English (en)
Chinese (zh)
Inventor
韩富
Original Assignee
Han Fu
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 Han Fu filed Critical Han Fu
Publication of WO2012130149A1 publication Critical patent/WO2012130149A1/fr

Links

Classifications

    • 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 of the pads
    • 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
    • A61F13/5146—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being air-pervious or breathable having apertures of perforations
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • A61F13/49406—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A61F13/49426—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier having an absorbent medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • A61F13/49406—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/4946—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an absorbent medium
    • 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 of the pads
    • 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
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • 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
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F2013/4512—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use
    • A61F2013/4537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use with aeration ducts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F2013/4512—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use
    • A61F2013/4568—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape folded in special shape during use three-dimensional; with split absorbent core

Definitions

  • the object of the present invention is to provide a super breathable absorbent article, especially a feminine hygiene product (such as a sanitary napkin), an infant diaper, a diaper, a trousers, an adult care product, and a care product for pets and other animals. Wait. Background technique
  • the structure of a diaper currently common on the market is mainly an absorbent layer in the middle for absorbing and retaining a dirty liquid such as urine.
  • the upper and lower surfaces of the absorber layer are respectively a water-permeable inner layer and a leak-proof outer layer, the inner layer is close to the body surface, and the outer layer is close to the clothes.
  • the inner and outer ends are connected by elastic members, locking members or other connecting means, forming a circumference around the user's waist and forming a closed relationship with the user's body surface for fixing the absorbent article and preventing urine Wait for leakage from the front and rear sides.
  • the left and right sides of the absorber layer have elastic or non-elastic side leakage protection edges to prevent urine from leaking from both sides.
  • the seal of the waist and the retaining edges on both sides almost completely close the space formed between the diaper and the body, and theoretically prevent the leakage of body fluids and the like.
  • the breathability of such diapers depends to a large extent on the breathability of the materials used in the diapers, while the materials with good breathability have poor leakage resistance, and the general materials have poor gas permeability during wet conditions.
  • the body part wrapped by the diaper is not breathable, and the surrounding environment of the skin is easily moist and stuffy, causing allergies, diaper rash and the like under the action of urine.
  • Providing an absorbent article that is both leak-proof and breathable, such as a diaper has great social and economic benefits. Summary of the invention
  • one measure of the present invention is to provide one or more places on the absorbent article from the top layer to the bottom layer through the absorbent article. Throughout the perforation, the outside air can directly reach the enclosed space of the absorbent article and the body, thereby accelerating the moisture in the enclosed space to the outside of the body.
  • the absorbent article further comprises a leakage absorbent body, a ring hole thickening leakage feature, a liquid absorption expansion barrier dam, a guide groove, and the like to prevent body fluids from being removed. A feature of one or more of the features of the first through hole leaking.
  • the absorbent article may contain one or more selective breathable structures.
  • an absorbent article having improved gas permeability comprising a liquid permeable top layer, a liquid permeable or liquid impermeable back layer adjacent to a body surface of a user, and sandwiching An absorber layer between the liquid top layer and the liquid permeable or liquid impermeable backsheet of the absorbent article.
  • the absorber layer absorbs liquid and has liquid retention.
  • the liquid-permeable or liquid-impermeable underlayer of the absorbent article has a projected surface area in the thickness direction of the absorbent article that is greater than or equal to a projected surface area of the absorbent body layer in the thickness direction of the absorbent article.
  • the surface of the liquid-permeable or liquid-impermeable underlayer of the absorbent article is divided into two parts, a part of which absorbs the absorbent layer of the absorbent article
  • the cover covers the bottom layer, and the other portion is the bottom layer of the peripheral region that does not cover the absorber layer.
  • the absorbent article of the present invention is characterized in that it comprises at least one of the following features for improving gas permeability: A.
  • the absorbent article comprises one or more from the liquid permeable top layer to the absorbent
  • the liquid permeable or liquid impermeable bottom layer of the article penetrates the first through hole of the absorbent article; and, corresponding to the first through hole, the absorbent article further includes at least one leakproof structure, For preventing leakage of bodily fluid from the first through hole of the absorbent article; and B.
  • the absorbent article comprises one or more selectively permeable structures, the selective venting structure is to absorb the The liquid permeable or liquid impermeable bottom layer of the article is partially combined with the liquid permeable top layer or another liquid permeable material to form a closed space, and a liquid swellable structure is disposed in the closed space, and The upper and lower surfaces of the enclosed space are provided with one or more apertures or slits extending through the interior and exterior of the enclosed space for venting.
  • the leak-proof structure of the absorbent article is selected from the group consisting of a leak-proof absorbent body, a ring-hole thickening leak-proof structure, a liquid-absorbent expansion barrier dam, a guide groove, or any combination thereof.
  • the leak-proof structure includes at least a leak-proof absorbent body, the leak-proof absorbent body is disposed around the first through-hole on a liquid-permeable top layer of the absorbent article, and And a second through hole communicating with the first through hole, the leaky absorbent body includes a liquid absorbing structure, and the liquid swellable structure causes the leakproof absorption in a state of liquid absorption The body volume expands to block body fluid from leaking out of the first through hole and the second through hole.
  • each of the first through holes may be provided with one of the leak-proof absorbent bodies, and each of the leak-proof absorbent bodies includes the liquid permeation of the leak-proof absorbent body or a liquid-impermeable underlayer having the same or similar surface contact layer as the liquid-permeable or liquid-impermeable underlayer of the leak-proof absorbent body, the liquid-permeable or impervious in the leak-proof absorbent body
  • the liquid swellable structure is encapsulated between the liquid underlayer and the surface contact layer.
  • Each of the leak-proof absorbers may be provided with one or a pair of second through holes communicating with the first through holes, the second through holes penetrating the liquid permeating body of the leak-proof absorbent body Or a liquid-impermeable backsheet, the surface contact layer, and the liquid-swellable structure.
  • the expansion of the liquid-swellable structure does not damage the leak-proof absorbent body, and the liquid-swellable structure includes Liquid swellable material.
  • the liquid-swellable material is an organic or inorganic material capable of absorbing water or expanding body fluid and being insoluble in water or body fluid in a body temperature environment, and the liquid swellable material comprises at least one of the following materials:
  • a synthetic material comprising a synthetic hydrogel polymer; the synthetic hydrogel polymer comprising an alkali metal polyacrylate, polyacrylamide, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyethylene, and the like
  • suitable polymers include hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, and isobutylene maleic acid copolymerization and mixtures thereof;
  • Crosslinked acrylic acid polymers and copolymers thereof including all or part of alkali metals, alkaline earth metals and aluminum, zinc and iron salts, and poly(methacrylic acid), polyacrylamide, poly
  • Crosslinked polyvinylpyrrolidone a copolymer of polyvinylpyrrolidone containing polyvinyl acetate; polymethyl-, polyethyl-, polybutyl-vinyl ether and copolymers derived from vinyl ether, including methylethylene a copolymer of an ether and maleic anhydride or maleic acid;
  • polyethylene oxide having a molecular weight of from about 100,000 to 8,000,000;
  • Naturally derived polysaccharides including alginic acid and its salts, agar, locust bean gum, carrageenan, gelatin, starch; and cellulose derivatives, including carboxymethyl Cellulose and cellulose acetate, pectin, guar gum, xanthan gum; skin and analogs;
  • the absorbent article of the present invention can directly exchange gas with the outside, the moisture characteristics of the absorbent article and the human body are closed and the contact area is greatly improved, so that the surface of the user's skin is more dry and comfortable.
  • a leak-proof absorbent body is provided around the first through hole to block the leakage of body exudates to the area outside the first through hole.
  • the leaky absorbent body When there is no excrement, the leaky absorbent body is in a dry, small volume state, making it comfortable to wear.
  • the excrement reaches the vicinity of the first through hole, since the leaky absorbent body absorbs liquid, in the first pass A perforation and a barrier around the second through hole can still reliably prevent leakage of body fluid.
  • the leak-proof structure includes at least a ring-hole thickening leakage structure, wherein the ring-hole thickening leakage structure comprises at least one of the following structures: C. at the first The absorber layer at the peripheral region of the through hole has at least one of a larger thickness, a larger liquid swellable material, or a material having better liquid swellability than the absorber layer in the adjacent region. Ring hole thickening leakage structure; and D.
  • the liquid permeable top layer of the absorbent article and the liquid permeable or liquid impermeable underlayer of the absorbent article pass A ring-hole thickened leak-proof structure formed by bonding, hot pressing, ultrasonic or sewing in part or in whole by direct or indirect bonding.
  • the leak-proof absorbent body may also include a ring-hole thickening leakage structure, wherein the ring-hole thickening leakage structure comprises at least one of the following structures: C. at a peripheral region of the second through hole a liquid swellable structure having a larger thickness, a more liquid swellable material, or a material having at least one characteristic of a material having better liquid swellability than a liquid swellable structure in an adjacent region thereof a hole thickening leakage structure; and, D.
  • a ring-hole thickened leak-proof structure formed by bonding, hot pressing, ultrasonic or sewing in part or in whole by direct or indirect bonding.
  • the liquid-swellable material is an organic or inorganic material capable of absorbing water or expanding body fluid and being insoluble in water or body fluid in a body temperature environment, and the liquid swellable material comprises at least one of the following materials:
  • a synthetic material comprising a synthetic hydrogel polymer; the synthetic hydrogel polymer comprising an alkali metal polyacrylate, polyacrylamide, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyethylene, and the like
  • suitable polymers include hydrolyzed acrylonitrile Starch starch, acrylic acid grafted starch, and isobutylene maleic acid copolymerization and mixtures thereof; crosslinked acrylic acid polymers and copolymers thereof, including all or part of alkali metal, alkaline earth metal salts and aluminum, zinc and iron salts, And poly(methacrylic acid), polyacrylamide, poly
  • Crosslinked polyvinylpyrrolidone a copolymer of polyvinylpyrrolidone containing polyvinyl acetate; polymethyl-, polyethyl-, polybutyl-vinyl ether and copolymers derived from vinyl ether, including methylethylene a copolymer of an ether and maleic anhydride or maleic acid;
  • polyethylene oxide having a molecular weight of from about 100,000 to 8,000,000;
  • Naturally derived polysaccharides including alginic acid and its salts, agar, locust bean gum, carrageenan, gelatin, starch; and cellulose derivatives, including carboxymethyl Cellulose and cellulose acetate, pectin, guar gum, xanthan gum; skin and analogs;
  • the annular hole is thickened by the annular hole so that the peripheral region of the through hole has a liquid absorption saturation of a region smaller than or equal to a distance from the through hole, and the peripheral region of the through hole has a larger area than the adjacent region. Greater thickness. Therefore, by virtue of the ring hole thickening leakage structure, it is possible to prevent body fluid from leaking from the through hole.
  • the leak-proof structure includes at least one or more liquid-absorbent expansion barrier dams, and the liquid-absorbent expansion barrier dam is disposed in the first through-hole and is separated from body fluids or excretions. Between the parts of the body.
  • the liquid-absorbent expansion barrier dam is comprised of a water permeable material or structure and a liquid-swellable structure encased therein.
  • the water permeable material or structure for constituting the liquid absorption expansion barrier dam may be combined with a boundary of a partial surface or a portion of the surface of the water permeable top layer of the absorbent article to form a three-dimensional closed
  • the leak-proof dam enclosure space is encapsulated in the closed space of the leak-proof dam to form the liquid-absorbent expansion barrier dam.
  • the liquid swellable structure comprises a liquid swellable material; and the liquid absorbing expansion dam is not damaged by expansion of the liquid swellable structure.
  • the liquid swellable material is an organic or inorganic material capable of absorbing water or expanding body fluid and being insoluble in water or body fluid under a body temperature environment, and the liquid swellable material comprises at least one of the following materials:
  • a synthetic material comprising a synthetic hydrogel polymer; the synthetic hydrogel polymer comprising an alkali metal polyacrylate, polyacrylamide, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyethylene, and the like
  • suitable polymers include hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, and isobutylene maleic acid copolymerization and mixtures thereof;
  • Crosslinked acrylic acid polymers and copolymers thereof including all or part of alkali metals, alkaline earth metals and aluminum, zinc and iron salts, and poly(methacrylic acid), polyacrylamide, poly
  • Crosslinked polyvinylpyrrolidone a copolymer of polyvinylpyrrolidone containing polyvinyl acetate; polymethyl-, polyethyl-, polybutyl-vinyl ether and copolymers derived from vinyl ether, including methylethylene a copolymer of an ether and maleic anhydride or maleic acid;
  • polyethylene oxide having a molecular weight of from about 100,000 to 8,000,000;
  • Naturally derived polysaccharides including alginic acid and its salts, agar, locust bean gum, carrageenan, gelatin, starch; and cellulose derivatives, including carboxymethyl Cellulose and cellulose acetate, pectin, guar gum, xanthan gum; skin and analogs;
  • the liquid-absorbent expansion barrier dam is combined with the liquid-permeable top layer of the absorbent article in a surface contact manner on one side in the longitudinal direction thereof and its peripheral region.
  • the boundary contour of the contact surface of the liquid-absorbent expansion barrier dam and the liquid-permeable top layer may be a line shape, a corrugation shape, a line segment, a circle, a semicircle or a cross line, or a line segment or an arc
  • the various shapes formed by the combination are disposed between the first through hole and a portion of the user's body fluid or excrement leaving the body, or surround and partially or completely surround the first through hole, thereby functioning as a flow blocking With the role of drainage.
  • the surface area of the liquid-absorbent expansion barrier dam opposite to the contact surface of the liquid-permeable top layer of the absorbent article and close to the surface of the user may be bonded, hot pressed, and ultrasonically Or a sewing method combined with a hydrophobic non-woven fabric or foam, a mesh structure to improve the comfort and dryness of the surface contact with the user.
  • the liquid-absorbent expansion barrier dam In the dry state, the liquid-absorbent expansion barrier dam is small in volume and soft to the touch, and the outer surface of the liquid-permeable top layer of the absorbent article is in a state of stagnation, which does not cause significant discomfort to the user. After the liquid-absorbent expansion barrier dam expands, the volume becomes larger and the hardness increases. The high-absorbent polymer inside the liquid swells and swells, and squeezes each other to form a dense and impervious wall, which hinders the direct flow of the body fluid. The first through hole, and/or the body fluid is infiltrated into other areas to prevent body fluid from leaking out of the first through hole.
  • the leak-proof structure includes at least one or more flow guiding grooves, and the flow guiding groove is disposed at a portion of the first through hole and a user's body fluid or excrement leaving the body. between.
  • the flow guiding groove refers to a groove which is formed at a certain portion of the surface of the liquid-permeable top layer of the absorbent article and which is more effective in the liquid-swelling state.
  • the flow guiding groove is formed at a local position of the absorbent article by pressing, bonding, hot pressing, locking, sewing or ultrasonic, and is used for restricting the absorption of the absorbent article after the liquid absorption is expanded.
  • the maximum spacing between the liquid top layer and the liquid permeable or liquid impermeable backing layer of the absorbent article is less than a specific value at the portion of the flow guiding groove.
  • the specific value is a value between 0.1 mm and 30 mm.
  • a liquid swellable material having a smaller thickness than an adjacent portion thereof may be employed in the absorbent body at a portion where the flow guiding groove needs to be formed in the absorbent article, a less liquid-swellable material, or a material and/or structure having a weak liquid-swelling property, such that the thickness of the portion after the liquid-absorbent expansion is smaller than the thickness of the adjacent portion thereof, thereby forming the flow guiding groove .
  • the contour of the guide groove on the liquid-permeable top surface of the absorbent article may be a fold line, a corrugation, a line segment, a circle, a semicircle, a triangle, a quadrangle or a straight line. Or in the form of a pattern of various combinations of line segments and arcs, surrounded by the first through hole and the body fluid or excrement of the user of the absorbent article, surrounded by part or all The first through hole.
  • the flow guiding groove is small in volume and soft to the touch, and the outer surface of the liquid permeable top layer of the absorbent article is in a contracted state, and does not cause significant discomfort to the user.
  • the volume of the absorber layer becomes thicker and thicker, and the hardness is increased.
  • the expansion of the absorber layer in a certain area is restricted by local bonding, and/or by using different expansion coefficients locally.
  • the liquid swellable material such that the degree of expansion of the adjacent regions of the absorbent layer under the same external conditions is different, thereby forming the flow guiding groove on the liquid permeable top layer of the absorbent article, hindering
  • the body fluid flows directly to the first through hole and guides the body fluid to flow into other areas to prevent body fluid from leaking out of the first through hole.
  • the selective gas permeable structure may be disposed in the bottom layer portion of the peripheral region of the absorbent article, wherein the liquid permeable or not of the absorbent article passing through the bottom layer of the peripheral region
  • the liquid permeable underlayer is partially bonded to the liquid permeable top layer or another liquid permeable material to form a bonding region and a non-bonding region surrounded by the bonding region, the unbonding region forming a first closed space
  • the inside of the first closed space is provided with a liquid swellable structure, and small holes or slits penetrating the inside and outside of the first closed space are provided on the upper and lower surfaces of the first closed space for ventilation.
  • the components of the liquid-swellable structure do not leak from the outside of the small holes or slits to the outside of the first closed space.
  • the first enclosed space is not destroyed by expansion of the liquid-swellable structure, and the liquid-swellable structure comprises a liquid-swellable material.
  • the selective gas permeable structure may also be disposed in the absorbent body covering the bottom layer portion of the absorbent article, wherein the absorbent article covering the underlying region by the absorbent body is transparent
  • the liquid or liquid impermeable underlayer portion is combined with the liquid permeable top layer or another liquid permeable material at a localized location to form one or more liquid permeable top layers or additional regions surrounded by the bonded locations a second closed space formed by the liquid permeable material surrounding the liquid-permeable or liquid-impermeable bottom layer of the absorbent article, disposed on the upper and lower surfaces of the second closed space through the second closed space
  • the holes or slits are used for ventilation.
  • the junction points of the same second enclosed space are connected to form a closed curve.
  • the second closed space is not broken by expansion of the liquid swellable structure, and the liquid swellable structure comprises liquid swellable material .
  • the composition of the liquid-swellable structure does not pass from the small hole or slit and the liquid-permeable or liquid-impermeable underlayer of the absorbent article to the liquid-permeable top
  • the layer or additional liquid permeable material leaks outside of the second enclosed space outside of the portion where the local locations are joined.
  • the liquid swellable structure of the selective gas permeable structure is composed of a cellulose fluff pulp, a fabric layer, and a liquid swellable material having a liquid swellable property (such as a superabsorbent polymer or a super absorbent body, a structure composed of an absorbent foam or an absorbent nonwoven material; or a mesh or package formed by a hydrophilic or hydrophobic nonwoven fabric, or a water-absorbent paper material, or a combination of a partially hydrophilic material and a partially hydrophobic material;
  • the structure encloses a structure formed of a cellulosic fluff pulp, a fabric layer, and the liquid swellable material.
  • the water content of the liquid-swellable structure reaches a liquid saturation level thereof
  • the volume of the liquid-swellable structure naturally expands can block the leakage of body fluid from the selective gas permeable structure.
  • the liquid-swellable material is an organic or inorganic material capable of absorbing water or expanding body fluid and being insoluble in water or body fluid in a body temperature environment, and the liquid swellable material comprises at least at least One:
  • a synthetic material comprising a synthetic hydrogel polymer; the synthetic hydrogel polymer comprising an alkali metal polyacrylate, polyacrylamide, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyethylene, and the like
  • suitable polymers include hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, and isobutylene maleic acid copolymerization and mixtures thereof;
  • Crosslinked acrylic acid polymers and copolymers thereof including all or part of alkali metal, alkaline earth metal salts and aluminum, zinc and iron salts, and poly(methacrylic acid), polyacrylamide, poly(N, N-di Methyl acrylamide) and polymethacrylamide;
  • Crosslinked polyvinylpyrrolidone a copolymer of polyvinylpyrrolidone containing polyvinyl acetate; polymethyl-, polyethyl-, polybutyl-vinyl ether and copolymers derived from vinyl ether, including methylethylene a copolymer of an ether and maleic anhydride or maleic acid;
  • polyethylene oxide having a molecular weight of from about 100,000 to 8,000,000;
  • Naturally derived polysaccharides including alginic acid and its salts, agar, locust bean gum, carrageenan, gelatin, starch; and cellulose derivatives, including carboxymethyl Cellulose and cellulose acetate, pectin, guar gum, xanthan gum; skin and analogs; Polyethyleneimine; polyacrylaldehyde; styrene-maleic acid liver copolymer; ethylene-maleic anhydride copolymer; polydimethylaminoethyl methacrylate; polyalkylene polyamine; (Vinylbenzyltrimethylammonium chloride) and similar quaternary ammonium polymers; polymaleic anhydride; low molecular weight phenolic resin; low molecular weight urea formaldehyde resin.
  • the liquid permeable material for forming the selective gas permeable structure may comprise: a liquid permeable nonwoven material, including spunbonding, melt blowing, carding, hydraulic acupuncture, or Wet-laid material; other liquid-permeable structure, including porous foam, or porous plastic film; or water-absorbing material, including absorbent paper material; or the liquid-permeable material consists of natural fiber, rayon, or natural and a mixture of rayon fibers; the natural fiber comprises wood pulp or cotton fiber; the rayon fiber comprises polyester, polyethylene, polypropylene, viscose, or rayon; or the liquid permeable material is made of linen Made of fibers, the linen fibers are bonded to each other in a bonding model.
  • a liquid permeable nonwoven material including spunbonding, melt blowing, carding, hydraulic acupuncture, or Wet-laid material
  • other liquid-permeable structure including porous foam, or porous plastic film
  • water-absorbing material including absorbent paper material
  • the liquid-permeable material consists of
  • the liquid swellable structure inside the closed cavity is in a dry small volume state
  • the closure There is space in the cavity to complete the task of exchanging gases.
  • the liquid-swellable structure inside the cavity absorbs and expands, and the small holes or slits on both sides of the closed cavity and the selectivity
  • the internal space of the ventilating structure is sealed to prevent leakage of excrement.
  • the liquid permeable top layer of the absorbent article and the liquid permeable or liquid impermeable bottom layer of the absorbent article may be directly bonded in a peripheral region of the first through hole, whereby encapsulating other structures and components of the absorbent article that are penetrated by the first through hole between the liquid permeable top layer and the liquid permeable or liquid impermeable underlayer of the absorbent article Between the liquid permeable top layer and the liquid permeable or liquid impermeable backing layer of the absorbent article.
  • the liquid permeable or liquid-impermeable first through-hole encapsulation layer formed by one or more sheets may be passed through the absorbent article, and the liquid permeability a top layer and the liquid permeable or liquid impermeable backing layer of the absorbent article are respectively bonded at a peripheral region of the first through hole, thereby absorbing the liquid permeable top layer and the absorbent of the absorbent article
  • Other structures and components interposed between the liquid-permeable or liquid-impermeable backsheet of the article through the first through-hole are encapsulated in the liquid-permeable top layer and the absorbent article
  • the liquid permeable or liquid impermeable underlayer and the first through hole encapsulation layer may be passed through the absorbent article, and the liquid permeability a top layer and the liquid permeable or liquid impermeable backing layer of the absorbent article are respectively bonded at a peripheral region of the first through hole, thereby absorbing the liquid permeable top layer and the absorbent of the absorbent article
  • the first through-hole encapsulation layer has a pleated structure.
  • the first through-hole encapsulation layer is made of a liquid-impermeable material such as ethylene, polyethylene plastic, non-liquid permeable non-woven fabric, polyethylene or polypropylene film, non-woven fabric with liquid-impermeable material coating.
  • the liquid-permeable or liquid-impermeable backing layer and the surface contact layer of the leak-proof absorbent body may be bonded, heat-pressed, and locked in a peripheral region of the second through-hole. Bonding, ultrasonically or stitching to thereby couple the leakage-resorbing body between the surface-contacting layer and the liquid-permeable or liquid-impermeable underlayer of the leak-proof absorbent body Other structures and components penetrating the two through holes are encapsulated between the surface contact layer and the liquid permeable or liquid impermeable backing layer of the leaky absorbent body.
  • the leak-leakage absorber may pass through a second through-hole encapsulation layer formed by combining one or more sheets with the liquid-permeable or liquid-impermeable underlayer of the leak-proof absorber and the surface
  • the contact layer is respectively bonded at a peripheral region of the second through hole by bonding, hot pressing, locking, ultrasonic or sewing, thereby contacting the surface contact layer and the block of the leaky absorbent body
  • Other structures and components interposed between the liquid-permeable or liquid-impermeable underlayer of the leaky absorbent body through the second through-hole are encapsulated in the surface contact layer and the liquid-permeable body of the leak-proof absorber Or between the liquid-impermeable underlayer and the second through-hole encapsulation layer.
  • the second through-hole encapsulation layer has a pleated structure.
  • the second through-hole encapsulation layer is made of a liquid-impermeable material such as ethylene, polyethylene plastic, a liquid-impermeable non-woven fabric, a polyethylene or polypropylene film, and a non-liquid-permeable material coating.
  • the first through hole and the second through hole are the same or similar in size and shape, and the first through hole and the second through hole completely coincide or approximate in spatial arrangement. coincide.
  • the liquid permeable top layer of the absorbent article and the liquid permeable or not of the leaky absorbent body may be bonded together by bonding, hot pressing, crimping, ultrasonic or sewing to prevent leakage of bodily fluids from the joint.
  • the absorbent article and the leak-proof absorbent body may be in the first pass by a crimping structure penetrating the first through hole and the second through hole.
  • the perforations are tightly coupled to the peripheral region of the second through hole.
  • the liquid permeable top layer of the absorbent article and the liquid permeable or liquid impermeable bottom layer of the leaky absorbent body Tightly combined to prevent fluid outflow.
  • the inner surfaces of the first through hole and the second through hole are encapsulated in the buckle structure.
  • the buckle structure is a flexible structure.
  • the crimping structure may be a rigid structure.
  • a third through-hole encapsulation layer formed by combining one or more sheets may be used, and the one end of the third through-hole encapsulation layer and the liquid-permeable or non-exhaustive absorber may be The liquid permeable underlayer is bonded to the peripheral region of the second through hole by bonding, hot pressing, locking, ultrasonic or sewing; and the other end of the third through hole encapsulating layer is bonded and heat pressed And the liquid permeable top layer of the absorbent article is directly or indirectly joined to the peripheral region of the first through hole by a lock, an ultrasonic wave or a sewing method.
  • the third through-hole encapsulation layer has a pleated structure.
  • the third through-hole encapsulation layer is made of a liquid-impermeable material such as ethylene, polyethylene plastic, a liquid-impermeable non-woven fabric, a polyethylene or polypropylene film, and a non-liquid-permeable material coating.
  • a fourth through-hole encapsulation layer formed by one or more sheets may be used to penetrate the first through hole of the absorbent article and the second through hole of the leak-proof absorbent body.
  • the surface contact layer of one end of the fourth through-hole encapsulation layer and the surface of the second through-hole is bonded, heat-pressed, latched, ultrasonically or stitched in a peripheral region of the second through-hole
  • the other end of the fourth through-hole encapsulation layer is bonded, heat-pressed, latched, ultrasonically or sewed with the liquid-permeable or liquid-impermeable underlayer of the absorbent article.
  • the peripheral regions of the first through holes are combined.
  • liquid permeable top layer of the absorbent article in the peripheral region of the first through hole and the liquid permeable or impervious of the leaky absorbent body in a peripheral region of the second through hole The liquid underlayers are respectively or together combined with a portion of the middle of the fourth through-hole encapsulation layer.
  • the fourth through-hole encapsulation layer has a pleated structure.
  • the fourth through-hole encapsulation layer is made of a liquid-impermeable material such as ethylene, polyethylene plastic, non- A liquid permeable nonwoven fabric, a polyethylene or polypropylene film, a nonwoven material having a liquid-impermeable material coating, a hydrophobic nonwoven material that prevents liquid permeation, or a laminate of a plastic film and a nonwoven material.
  • the first through hole may be provided in a region where the liquid permeable or liquid impermeable underlayer is present in the absorbent article.
  • the first through hole is disposed in a region of the absorbent article that is not directly facing the body fluid or excrement of the user away from the body, so as to prevent body fluid or excrement from directly from the first through hole. External leakage.
  • one or more of the first through holes are provided in an area corresponding to a portion where the user easily produces diaper rash and other skin diseases, or in an area where body fluids or excretions are not easily accessible.
  • the first through hole is provided in an area of the absorbent article located in the vicinity of the user's anus, the groin, or the butt, or in the longitudinal end regions of the absorbent article.
  • one or more of the first through holes are provided in an area corresponding to a portion where the user easily produces a diaper rash, that is, an area near the user's anus, the groin, or the butt, and is disposed in the body fluid or excreted.
  • the area where the object is not easily accessible that is, the longitudinal end regions of the absorbent article and the groin portion of the user.
  • the permeation of the leak-proof absorbent body a liquid or liquid impermeable back layer directly bonded to a peripheral region surrounding the first through hole of the liquid permeable or liquid impermeable bottom layer of the absorbent article in a peripheral region surrounding the second through hole a combination of hot pressing, locking, ultrasonic or sewing; at the same time, the liquid-permeable or liquid-impermeable backing layer of the leak-proof absorbent body is in a peripheral region surrounding the second through hole and the leaking
  • the surface contact layer of the absorbent body is directly bonded by bonding, hot pressing, locking, ultrasonic or sewing in a peripheral region surrounding the second through hole or by being respectively bonded to the second through hole encapsulating layer And a combination of hot pressing, locking, ultrasonic or sewing to encapsulate a material, a structure, or the like wrapped in the leakage
  • the liquid permeable or liquid impervious property of the leaky absorbent body A hydrophilic stretchable nonwoven fabric may be used for the bottom layer, and a hydrophobic non-stretchable nonwoven fabric is used for the surface contact layer of the leak-proof absorbent body.
  • the surface contact layer of the leak-proof absorbent body may be provided with a hydrophobic non-woven fabric or foam on its side surface close to the body surface of the user by bonding, hot pressing, locking, ultrasonic or sewing.
  • a mesh structure to improve the comfort and dryness of the skin may be provided with a hydrophobic non-woven fabric or foam on its side surface close to the body surface of the user by bonding, hot pressing, locking, ultrasonic or sewing.
  • the liquid permeable or liquid impermeable underlayer of the leaky absorbent body is identical or similar in contour to the surface contact layer.
  • the liquid-permeable or liquid-impermeable backing layer of the leak-proof absorbent body and the outer shape of the surface contact layer may be various shapes or a combination of various shapes formed by combining a line segment and an arc.
  • the liquid-permeable or liquid-impermeable backing layer of the leak-proof absorbent body and the surface contact layer have a circular, elliptical or polygonal shape.
  • the second through hole may be provided at any portion of the leaky absorbent body.
  • the second through hole is located at a geometric center of the leaky absorbent body or a peripheral region of the geometric center of the leaky absorbent body.
  • the first through hole and the second through hole may be any shape in which a line segment and a circular arc are combined.
  • the first through hole and the second through hole are circular, elliptical, square, diamond or slit.
  • At least one of the first through hole and the second through hole may be covered with a hydrophobic mesh or yarn by hot pressing, bonding, crimping, ultrasonic or sewing in a peripheral region. Breathable structure.
  • the first through-hole is only the structure and material of the absorbent article that penetrates the position except the retained liquid-permeable top layer and/or the liquid-permeable or liquid-impermeable backsheet. .
  • the liquid-swellable structure of the leak-proof absorbent body may be a cellulose fluff pulp, a fabric layer, and a liquid-swellable material having a liquid-swelling property (such as a superabsorbent polymerization).
  • the combined network or wrap structure encloses a structure formed from a cellulosic fluff pulp, a fabric layer, and the liquid swellable material.
  • the liquid swellable structure of the leaky absorbent body comprises a shaped structure or material to prevent the liquid swellable material in the liquid swellable structure of the leaky absorbent body from being The leaky absorption absorbs a wide range of movements in the body.
  • the water content of the liquid-swellable structure reaches a liquid saturation level thereof
  • the volume of the liquid-swellable structure naturally expands can block the leakage of the body fluid from the first through hole and the second through hole.
  • the leaky absorbent body is not damaged by the expansion of the liquid-swellable structure.
  • the liquid-swellable structure of the liquid-absorbent expansion barrier dam may be a cellulose fluff pulp, a fabric layer, and a liquid-swellable material having a liquid-swelling property (such as high absorbency).
  • the mesh or wrap structure formed by the combination of materials encloses the structure formed by the cellulosic fluff pulp, the fabric layer, and the liquid swellable material.
  • the liquid swellable structure of the liquid absorbing expansion barrier dam comprises a shaped structure or material to prevent liquid swellability in the liquid swellable structure in the liquid absorbing expansion barrier dam The material moves over a wide range within the liquid-absorbent expansion barrier dam.
  • the volume of the liquid-swellable structure after natural expansion can block The body fluid leaks from the first through hole through the liquid absorption expansion barrier dam.
  • the liquid-absorbent expansion barrier dam is not damaged by the expansion of the liquid-swellable structure.
  • the liquid-permeable or liquid-impermeable underlayer of the leak-proof absorbent body is made of a liquid permeable material
  • the liquid permeable material comprises: a liquid permeable non-woven material, including spinning Sticky, meltblown, carded, hydro-acupuncture, or wet-laid materials; other liquid-permeable structures, including porous foam, porous plastic film; or water-absorbing materials, including absorbent paper Material; or
  • the liquid-permeable or liquid-impermeable underlayer of the leak-proof absorbent body is made of natural fiber, rayon, or a mixture of natural and rayon fibers; the natural fiber includes wood pulp or cotton fiber; Including polyester, polyethylene, polypropylene, viscose, or rayon; or
  • the liquid-permeable or liquid-impermeable underlayer of the leak-proof absorbent body is made of flax fibers, which are bonded to each other in a bonding model; or
  • the liquid-permeable or liquid-impermeable bottom layer of the leak-proof absorbent body is made of a liquid-impermeable material, and the liquid-impermeable material comprises ethylene, polyethylene plastic, non-liquid-permeable non-woven fabric, and poly A film of ethylene or polypropylene, a nonwoven material having a coating of a liquid-impermeable material, a hydrophobic nonwoven material that prevents liquid permeation, or a laminate of a plastic film and a nonwoven material.
  • the liquid-permeable or liquid-impermeable underlayer of the leak-leakage absorber is made of a liquid-impermeable material near the periphery of the second through-hole
  • the liquid-impermeable property Materials include ethylene, polyethylene plastics, liquid-impermeable nonwovens, polyethylene or polypropylene films, nonwoven materials with liquid-impermeable coatings, hydrophobic nonwoven materials that prevent liquid penetration, or plastic films and a laminated sheet of a spun material
  • the liquid-permeable or liquid-impermeable underlayer portion of the leak-proof absorbent body at a periphery away from the second through-hole is made of a liquid permeable material
  • the liquid permeability Materials include: liquid-permeable nonwoven materials, including spunbond, meltblown, carded, hydro-acupuncture, or wet-laid materials; other liquid-permeable structures, including porous foams, porous plastic films; or water-absorbing materials And comprising a water
  • the water permeable material or structure of the liquid absorption expansion barrier dam may comprise: a liquid permeable nonwoven material, including spunbonding, melt blowing, carding, hydraulic acupuncture, or wet Other materials, including porous foam, porous plastic film; or water-absorbing material, including absorbent paper materials; or the water-permeable material or knot Constructed from natural fibers, rayon, or a mixture of natural and rayon fibers; the natural fibers include wood pulp or cotton fibers; the rayon fibers include polyester, polyethylene, polypropylene, viscose, or rayon Or the water permeable material or structure is made of flax fibers that are bonded to each other in a bonding model.
  • a liquid permeable nonwoven material including spunbonding, melt blowing, carding, hydraulic acupuncture, or wet Other materials, including porous foam, porous plastic film; or water-absorbing material, including absorbent paper materials; or the water-permeable material or knot Constructed from natural fibers, rayon, or a mixture of natural and
  • the absorbent article further comprises a flow guiding layer and a shaped structure disposed between the liquid permeable top layer and the liquid permeable or liquid impermeable backing layer of the absorbent article.
  • the absorbent article further comprises an anti-leakage shield disposed on both sides to prevent side leakage.
  • At least one of the liquid permeable top layer and the liquid permeable or liquid impermeable bottom layer of the absorbent article is connected with an elastic member and a connecting member at an edge portion of both longitudinal ends thereof, so that the through The liquid-permeable top layer and/or the liquid-permeable or liquid-impermeable backsheet of the absorbent article can be joined at its longitudinal ends or at its extensions, surrounding and lying close to the waist of the user, such that the absorbent article
  • the user's body surface surrounds an approximately enclosed space that is formed to store excrement and prevent exudates from leaking out.
  • the absorbent article may be a feminine hygiene product, an infant diaper, a diaper, a pull-on pants, an adult care product, or a care product for pets and other animals.
  • FIG. 1 is a schematic view of a super gas permeable absorbent article having a leak-proof absorbent body and a selective gas permeable structural member without a two-side anti-leakage shield according to the present invention.
  • Figure 2 is a cross-sectional view of the super gas permeable absorbent article according to a preferred embodiment of the present invention taken along the line AA of Figure 1, showing the combination of the different through-hole encapsulation layers and then in a direct bond.
  • the main body of the absorbent article and the leak-proof absorbent body, the main body of the absorbent article has a first through hole, and the leak-proof absorbent body has a second through hole.
  • Figure 3 is a cross-sectional view of the absorbent article according to another preferred embodiment of the present invention taken along the line AA of Figure 1, showing the body and the block of the article of being packaged and bonded together by a through-hole encapsulation layer
  • the main body of the absorbent article has a first through hole
  • the leaky absorbent body has a second through hole.
  • 4a and 4b are cross-sectional views of the absorbent article according to two different embodiments of the present invention taken along the line AA of Fig. 1, showing the ring hole thickening leakage feature, and eliminating the leaky absorbent body. .
  • Figure 4a shows a schematic view of the liquid-permeable top layer of the absorbent article and the liquid-permeable or liquid-impermeable backsheet of the absorbent article in combination with the through-hole encapsulation layer;
  • Figure 4b shows the liquid-permeable top layer of the absorbent article and A schematic representation of the direct combination of a liquid permeable or liquid impermeable underlayer of an absorbent article.
  • Figure 5 is a cross-sectional view of the super gas permeable absorbent article according to still another embodiment of the present invention taken along the line AA of Figure 1, showing the main body and leakproofness of the absorbent article joined together in a direct bonding manner.
  • the absorber, the main body of the absorbent article has a first through hole, and the leaky absorbent body has a second through hole.
  • Figures 6a and 6b are cross-sectional views of a super-breathable absorbent article according to still another embodiment of the present invention taken along the line AA of Figure 1, showing the main body of the absorbent article joined together in a combined manner.
  • the main body of the absorbent article has a first through hole
  • the leaky absorbent body has a second through hole.
  • Figure 7 is a schematic view of another super-breathable absorbent article having a side leakage preventing screen and having a first through hole and an elongated liquid absorption expansion block according to the present invention. Liquid dam characteristics.
  • Figure 8 is a cross-sectional view showing the portion of the liquid-absorbent expansion retaining dam taken along the line C-C of Figure 7.
  • Figure 9 is a schematic illustration of another super gas permeable absorbent article having a first through hole and a circular liquid swellable dam dam feature surrounding the first through hole in accordance with the present invention.
  • Figure 10 is a schematic illustration of another super-breathable absorbent article having a first through-hole and a semi-circular liquid-absorbent expansion barrier dam feature in accordance with the present invention.
  • Figure 11 is a schematic illustration of another super-breathable absorbent article having a first through-hole and a guide groove feature in accordance with the present invention.
  • Figure 12 is a cross-sectional view of the selective gas permeable structure taken along line BB of Figure 1.
  • Figure 13 is a schematic view of another super gas permeable absorbent article according to the present invention, in which two first through holes are shown to share a single leaky absorbent body having two second through holes therein.
  • Figure 14 is a front elevational view of a super-permeable diaper having a leak-proof absorbent body prior to wearing in accordance with the present invention.
  • Figure 15 is a front elevational view of the super air permeable diaper of Figure 14 after it has been worn.
  • Figure 16 is a rear elevational view of the super air permeable diaper of Figure 14 after it has been worn. Description of the reference numerals
  • the object of the present invention is to provide a super breathable absorbent article, especially a feminine hygiene product (such as a sanitary napkin), an infant diaper, a diaper, a trousers, an adult care product, and a care product for pets and other animals. Wait.
  • a feminine hygiene product such as a sanitary napkin
  • Figure 1 shows a super gas permeable absorbent article in accordance with the present invention.
  • the absorbent article comprises a liquid permeable topsheet 2 adjacent to the body surface of the user, a liquid permeable or liquid impermeable backsheet 1 attached to the absorbent article of the bed or clothing, and a liquid permeable top layer 2 and An absorbent layer 3 between the liquid-permeable or liquid-impermeable underlayer 1 of the absorbent article that absorbs liquid and has liquid retention.
  • a flow guiding layer, a shaping structure, and the like disposed between the liquid permeable top layer 2 and the liquid permeable or liquid impermeable backing layer 1 of the absorbent article may be included (not shown) Out).
  • the liquid permeable top layer 2 may include, but is not limited to, an "inner layer” as described in patent 200680055017.0.
  • the inner facing layer refers to the layer of liquid permeable material forming the inner coating of the absorbent garment, and in use the inner facing layer is in a position directly in contact with the wearer's skin.
  • the inner facing layer may comprise Non-woven materials, such as spunbond, meltblown, carded, hydro-needle, wet-laid, etc. Suitable non-woven materials can be made from natural fibers such as wood pulp or cotton fiber, rayon such as polyester, polyethylene, Polypropylene, viscose, rayon, etc. or made of a mixture of natural and man-made fibers.
  • the inner layer material can also be made of flax fibers which can be bonded to each other in a bonding model, such as EP-A. -1035818. Also disclosed as an inner layer material is a porous foam, a porous plastic film, etc.
  • the material suitable for the inner layer should be soft, non-irritating to the skin and directly permeable to body fluids such as urine or other body fluids.
  • the top layer can also be different in different parts of the absorbent article.
  • the liquid permeable or liquid impermeable backsheet 1 of the absorbent article may include, but is not limited to, an "outer layer" as described in patent 200680055017.0. As disclosed in the patent 200680055017.0, "the outer layer refers to the material that forms the outer cover of the absorbent garment.
  • the outer layers may be the same or different at different locations of the absorbent article.
  • At least the outer layer of the absorbent core comprises a liquid impervious material.
  • Plastic film such as polyethylene or polypropylene film, non-woven material with liquid-impermeable material coating, hydrophobic non-woven material for preventing liquid penetration, or laminated film of plastic film and non-woven material.
  • the outer layer material is breathable so that The vapor is discharged from the absorbent core while still preventing liquid from passing therethrough.
  • breathable outer layer materials are porous polymeric films, spunbonded and meltblown nonwoven laminates, and porous polymeric films and nonwoven materials. Tableting.
  • the outer layer comprises a nonwoven material on at least the surface facing the undergarment.”
  • the absorbent layer 3 includes, but is not limited to, the "absorbent core” described in the patent 200680055017.0, and may also consist of the absorbent core and the wrapper bag described in the patent 200680055017.0 or other packages comprising at least one side of a water permeable material.
  • the "absorbent core” described in the patent 200680055017.0 is an absorbent structure disposed between two facing layers of at least the crotch portion of the absorbent article.
  • the absorbent core can be of any conventional type.
  • Examples of commonly occurring absorbent materials are cellulosic fluff pulp, fabric layers, superabsorbent polymers (so called superabsorbents), absorbent foams, Absorbent nonwoven material or the like.
  • Cellulose fluff pulp is usually combined with a superabsorbent polymer in an absorbent core.
  • Superabsorbent polymer is a water-swellable, water-insoluble organic or inorganic material that absorbs At least about 20 times by weight of an aqueous solution containing 0.9% by weight of sodium chloride.
  • Organic materials suitable for use as superabsorbent materials may include natural materials such as polysaccharides, polysaccharides and the like, and synthetic materials such as synthetic hydrogels.
  • the synthetic hydrogel polymer includes, for example, an alkali metal polyacrylate, polyacrylamide, polyvinyl alcohol, polyacrylic acid, polyacrylamide, polyvinylpyrene, and the like.
  • Other suitable polymers Including hydrolyzed acrylonitrile grafted starch, acrylic acid grafted starch, and isobutylene maleic acid copolymerization and mixtures thereof.
  • the gel polymer is preferably lightly crosslinked to render the material substantially water insoluble.
  • the superabsorbent material is further surface crosslinked so as to superabsorb the outer surface of the particles, filaments, sheets, spheres, etc. or the inner phase of the shell and superabsorbent.
  • the ratio has a higher crosslink density.
  • the superabsorbent material can be any shape suitable for the absorbent composition including granules, filaments, sheets, spheres, and the like.
  • Alternatives or similar materials having superabsorbent polymer or superabsorbent functions also include materials that swell upon contact with a liquid as described in the invention disclosed in CN 1269710 A, and functionally similar materials may also be used in the block.
  • a leakage absorbent body such as crosslinked acrylic acid and copolymers thereof, especially all or part of salts of alkali metals, alkaline earth metals and aluminum, zinc and iron salts, and, for example, poly(a) Acrylic acid), polyacrylamide, poly(N,N-dimethylacrylamide) and polymethacrylamide;
  • Crosslinked polyvinylpyrrolidone especially those copolymers of polyvinylpyrrolidone comprising polyvinyl acetate; polymethyl-, polyethyl-, polybutyl-vinyl ether and copolymers derived from vinyl ether, for example a copolymer of methyl vinyl ether and maleic anhydride or maleic acid; a polyethylene oxide having a molecular weight of from about 100,000 to 8,000,000;
  • Natural raw materials of polysaccharides such as alginic acid and its salts, agar, locust bean gum, carrageenan, gelatin, starch
  • cellulose derivatives such as carboxymethyl fiber
  • the weight ratio of the superabsorbent material is preferably Between 10% and 90%, more preferably between 30% and 70%. It is conventional for absorbent garments to have an absorbent core comprising layers of different properties corresponding to liquid absorption capacity, liquid dispensing capacity and storage capacity. Thin absorbent bodies commonly used in baby diapers and incontinence protective garments typically include extruded, mixed or layered structures of fiber fluff pulp and superabsorbent polymers.
  • the size and absorbent capacity of the absorbent core can be varied to suit different applications, such as Infant or adult incontinent".
  • the absorbent core may also comprise a top portion of the main absorbent body.
  • a distribution layer is provided which is adapted to quickly receive and temporarily store the exudate before it is absorbed by the primary absorbent core.
  • the resulting distribution layer is well known in the art and can be composed of a porous fiber mat or foam material.
  • the liquid permeable top layer 2 of the absorbent article may be a single piece or a plurality of separate pieces may be combined by direct or indirect means.
  • Each sheet may be composed of a layer of liquid permeable non-woven fabric, or may be one or more layers of liquid permeable non-woven fabric combined with other liquid permeable components, or composed of other liquid permeable materials;
  • the liquid permeable topsheet 2 and the liquid permeable or liquid impermeable backsheet 1 of the absorbent article may also be referred to as a topsheet and a backsheet, respectively.
  • the liquid-permeable top layer 2 and the liquid-permeable or liquid-impermeable back sheet 1 of the absorbent article are not necessarily one-layer structures, respectively, and may be composed of a plurality of layers of materials.
  • the liquid-permeable or liquid-impermeable underlayer 1 of the absorbent article may be a whole piece or a plurality of separate pieces combined by direct or indirect means.
  • Each piece can be composed of PE film, PP film, non-liquid permeable non-woven fabric and other liquid-permeable or liquid-impermeable materials, or it can be made of one or more PE films, PP film, non-liquid permeable non-woven fabric. Cloth, liquid permeable non-woven fabric combined with other non-liquid permeable materials.
  • the absorbent body layer 3 can be regarded as occupying a cuboid imaginary space having a volume of a certain length, width, and thickness in a state in which it is naturally not deformed, and the length direction thereof is set.
  • the width direction is set to the lateral direction
  • the direction perpendicular to the longitudinal and lateral directions is set to the thickness direction of the absorber layer 3.
  • the super gas permeable absorbent article shown in Fig. 1 does not have a leakage preventing screen on both sides.
  • the absorbent article may include an anti-leakage shield disposed on either side of the longitudinal center plane of the absorbent article to prevent side leakage.
  • the material and structure of the anti-leakage screen can be the same as those of the anti-leakage screen used in absorbent articles such as diapers in the prior art.
  • the liquid-impermeable backsheet 1 is connected to the elastic member 5 and the connecting member 6 by a direct or indirect connection at its own longitudinal end edges.
  • the connector 6 can take any suitable form, such as a bond, a fastener or a tie, to enable the liquid permeable topsheet 2 or the liquid permeable or liquid impermeable backsheet 1 of the absorbent article to It is connected at both ends of its longitudinal direction or its extension, and is wrapped around the waist of the user.
  • the absorbent article and The user's body surface surrounds an approximately enclosed space that stores excrement and prevents excretion from leaking out.
  • the liquid-permeable or liquid-impermeable backsheet 1 of the absorbent article has a projected surface area in the thickness direction of the absorbent article greater than or equal to a projected surface area of the absorbent body layer 3 in the thickness direction of the absorbent article.
  • the surface of the liquid-permeable or liquid-impermeable backsheet 1 of the absorbent article may be divided into two parts, a part of which covers the bottom layer 7 with the absorber covering the absorbent layer 3 of the absorbent article, and A portion is the bottom layer 8 of the peripheral region which does not cover the absorber layer 3.
  • a first through hole 10 is provided therein.
  • a leaky absorbent body 11 on the liquid permeable top layer 2 is further provided at a portion where the first through hole 10 is provided.
  • the leaky absorbent body 11 has a second through hole 17 that communicates with the first continuous perforation 10.
  • a selective gas permeable structure 9 is also shown in FIG. The specific structural form of the leak-proof absorbent body 11 and the selective gas permeable structure 9 will be described in detail later.
  • the number and positional distribution of the leaky absorbent body 11 and the selective gas permeable structure 9 shown in Fig. 1 are both schematic.
  • the invention is not limited to the specific case shown in Fig. 1 as an example.
  • only one of the leaky absorbent body 11 and the selective gas permeable structure 9 may be provided, or both of the structural features may be included.
  • the position at which each of the leak-proof absorbent body 11 and the selective gas permeable structure 9 is disposed may be either at a region where the absorber layer 3 is provided or outside a region where the absorber layer 3 is provided.
  • the number of each of the leaky absorbent body 11 and the selective gas permeable structure 9 is not limited, and may be one or plural, for example, 2, 3, 4, 5, 6, and 7. 8, and so on.
  • the liquid permeable or liquid impermeable bottom layer of the leaky absorbent body when the leaky absorbent body is disposed on the bottom layer of the peripheral region of the absorbent article that does not have the absorbent body layer Bonding, hot pressing, locking, directly surrounding the peripheral region of the first through-hole with the liquid-permeable or liquid-impermeable underlayer of the absorbent article in a peripheral region surrounding the second through-hole Ultrasonic or sewing method is combined as a combination; at the same time, the liquid-permeable or liquid-impermeable bottom layer of the leak-proof absorbent body surrounds the peripheral region of the second through hole and the leak-proof absorption
  • the surface contact layer of the body is directly bonded by bonding, hot pressing, locking, ultrasonic or sewing in a peripheral region surrounding the second through hole or by bonding and heating with the second through hole encapsulating layer respectively Compressing, locking, ultrasonic or sewing, etc., thereby encapsulating the material, structure, and the like wrapped in the leakage-receiving
  • leak-proof structures such as a ring-hole thickened leak-proof structure, a liquid-absorbent expansion barrier dam, a guide groove, and the like may be employed. These will be described in detail later.
  • the present invention may adopt one of the following ways or any combination of the above, or may be a variety of ways based on the following ways, Or other embodiments designed in accordance with the technical solutions described in the claims.
  • the focus is described in detail, and the description of other common features is omitted. That is, the features described in one embodiment or elsewhere in the specification are equally applicable to other embodiments, unless otherwise stated.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1 :
  • one or more first through holes 10 are provided in the absorbent article, and the first through holes 10 are permeable or impermeable from the liquid permeable top layer 2 to the absorbent article.
  • the liquid bottom layer 1 penetrates the absorbent article.
  • the first through hole 10 the outside air can directly reach the enclosed space of the absorbent article and the body, thereby accelerating the moisture in the enclosed space to be discharged outside the closed space.
  • the first through hole 10 may be disposed in any region of the absorbent article in which the liquid permeable or liquid impermeable backsheet 1 of the absorbent article is present.
  • the first through hole 10 is disposed in a region of the absorbent article that is not directly opposite to a portion of the user's urine, liquid, or the like, where the liquid excretion is away from the body, so as to prevent the dirty liquid from directly from the The first through hole 10 leaks outside.
  • one or more of the first through holes 10 may be provided in an area prone to diaper rash, such as an area of the absorbent article located near the anus, the groin, the buttocks, etc.; or dirt (including dirt) An area that is not easily accessible directly, such as the longitudinal end regions of the absorbent article (as shown in Fig. 1, the longitudinal front end 19 of the absorbent body and the longitudinal rear end 20 of the absorbent body).
  • the first through hole 10 is provided in an area where urine or the like cannot be directly reached after leaving the body.
  • An absorbent article having one or more first through holes 10 is provided in the vicinity of the anus or in the vicinity of the anus to improve the air permeability of the absorbent article, reduce the prevalence of diaper rash of the user, and protect the skin. Further, since the first through hole 10 provided at the groove portion is less likely to be blocked by the user's body, it is more advantageous to increase the air permeability of the absorbent article.
  • a space is provided between each of the first through holes 10 between the liquid permeable top layer 2 adjacent to the body surface side of the user and the user's body surface.
  • the leaky absorbent body 11 is, for example, as shown in Fig. 1 .
  • a leaky absorbent body 11 is provided in common at a group (i.e., a plurality of adjacent ones) of the first through holes 10, for example, as shown in Fig. 13.
  • Each of the leak-proof absorbent bodies 11 includes a liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorbent body, and the liquid-permeable or liquid-impermeable backsheet 14 with the leak-proof absorbent body.
  • a surface contact layer 15 having the same or similar shape, and a liquid swellable structure 16 is encapsulated between the liquid permeable or liquid impermeable back layer 14 of the leak absorbing body and the surface contact layer 15, for example, 3, 5, 6 are shown.
  • the liquid-permeable or liquid-impermeable backsheet 14 and the surface contact layer 15 of the leak-proof absorbent body 11 are small pieces compared to the absorber layer 3.
  • the size of the liquid-permeable or liquid-impermeable backsheet 14 and the surface contact layer 15 of the leak-proof absorbent body is not particularly limited as long as it can surround
  • the first through hole 10 can block the leakage of liquid from the first through hole 10 after the liquid absorbing expansion.
  • One (for example, as shown in FIGS. 2, 3, 5, and 6) or a group (for example, as shown in FIG. 13) penetrating through the leaky absorbent body 11 is reserved or provided on the leak-proof absorbent body 11.
  • the second through hole 17 penetrates the liquid-permeable or liquid-impermeable back layer 14 of the leak-proof absorber, the surface contact layer 15 and the liquid-swellable structure 16 .
  • the liquid permeable top layer 2 of the absorbent article and the liquid permeable or liquid impermeable bottom layer 1 of the absorbent article may be around the first through hole 10.
  • the regions are directly joined to thereby penetrate the first through-hole 10 between the liquid-permeable top layer 2 and the liquid-permeable or liquid-impermeable backsheet 1 of the absorbent article.
  • Other structures, components, and the like are encapsulated between the liquid permeable topsheet 2 and the liquid permeable or liquid impermeable backsheet 1 of the absorbent article, as shown in Figure 4b.
  • the liquid pervious or liquid-impermeable first through-hole encapsulation layer 18 formed by one or more sheets may be passed through the absorbent article, and the liquid permeable layer
  • the liquid-permeable or liquid-impermeable backsheet 1 of the absorbent topsheet and the absorbent article are respectively joined at a peripheral region of the first through-hole 10, thereby placing the absorbent article on the liquid-permeable top layer 2 and other structures, components, and the like interposed between the liquid-permeable or liquid-impermeable underlayer 1 of the absorbent article by the first through-hole 10 are encapsulated in the liquid-permeable top layer 2 and the absorbent Between the liquid permeable or liquid impermeable backsheet 1 of the article and the first through hole encapsulation layer 18, as shown in Figure 4a.
  • the first through-hole encapsulation layer 18 has a pleated structure.
  • the first through-hole encapsulation layer 18 is made of a liquid-impermeable material such as ethylene, polyethylene plastic, a liquid-impermeable non-woven fabric, a polyethylene or polypropylene film, and a non-liquid-permeable material coating.
  • liquid-permeable or liquid-impermeable backsheet 14 and the surface contact layer 15 of the leak-proof absorbent body 11 may be bonded, heat-pressed, latched, and ultrasonically in a peripheral region of the second through-hole 17
  • the other methods are directly combined, as shown in Figure 5.
  • the liquid pervious or not of the leak-proof absorbent body 11 may be respectively passed through one or more of the second through-hole encapsulating layers 23 combined with each other.
  • the liquid permeable underlayer 14 and the surface contact layer 15 are bonded in the peripheral region of the second through hole 17 by bonding, hot pressing, locking, ultrasonic, sewing, etc., so as to be located in the leak-proof absorption a material, a structure, or the like of the leaky absorber 1 1 between the liquid-permeable or liquid-impermeable backsheet 14 and the surface contact layer 15 penetrated by the second through hole 17 is encapsulated in the body
  • the surface contact layer 15, the liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorber and the second through-hole encapsulation layer 23 are as shown in Fig. 6a.
  • the second through-hole encapsulation layer 23 has a pleated structure.
  • the second through-hole encapsulation layer 23 is made of a liquid-impermeable material such as ethylene, polyethylene plastic, a liquid-impermeable non-woven fabric, a polyethylene or polypropylene film, and a non-liquid-permeable material coating.
  • the first through hole 10 and the second through hole 17 are the same size or shape, and the first through hole 10 and the second through hole 17 completely coincide or nearly coincide in spatial arrangement. .
  • the liquid permeable top layer 2 of the absorbent article and the leaky absorbent body 11 may be in a peripheral region of the first through hole 10 and a peripheral region of the second through hole 17
  • the liquid permeable underlayer 14 is directly bonded together by bonding, hot pressing, crimping, ultrasonic waves, etc., as shown in FIG.
  • a cylindrical through-hole encapsulation layer 24 formed of one or more sheets may be used, and one end of the third through-hole encapsulation layer 24 and the leak-proof absorber 1 1 described above may be used.
  • the liquid-permeable or liquid-impermeable backsheet 14 is bonded to the peripheral region of the second through hole 17 by bonding, hot pressing, locking, ultrasonic, sewing, etc., and the third through-hole encapsulating layer 24 is The other end is bonded to the peripheral region of the first through hole 10 with the liquid permeable top layer 2 of the absorbent article by means of bonding, hot pressing, locking, ultrasonic, sewing or the like. As shown in Figure 6b.
  • the third through-hole encapsulation layer 24 has a pleated structure.
  • the third through-hole encapsulation layer 24 is made of a liquid-impermeable material such as ethylene, polyethylene plastic, a liquid-impermeable non-woven fabric, a polyethylene or polypropylene film, and a non-liquid-permeable material coating.
  • a spun material, a hydrophobic nonwoven material that prevents liquid permeation, or a laminate of a plastic film and a nonwoven material is formed into a barrel structure having open ends.
  • the direct bonding manner described above and the respective bonding manner by means of the through-hole encapsulation layer may be used singly or in combination.
  • the upper and lower surfaces of the periphery may be combined at least one of the first through hole 10 and the second through hole 17 by using a direct bonding manner and/or a separate bonding manner, and then by direct bonding and/or separately combining
  • the leaky absorbent body 11 is combined with an absorbent article.
  • the liquid permeable top layer 2 of the absorbent article and the liquid permeable or liquid impermeable backsheet 1 of the absorbent article are in the first through hole 10
  • the peripheral region and the first through-hole encapsulation layer 18 are respectively packaged, and the liquid-permeable underlayer 14 and the surface contact layer 15 of the leakage-receiving body 11 are in a peripheral region of the second through-hole 17 and a second through-hole.
  • the encapsulating layers 23 are respectively combined and packaged, and then the leaky absorbent body 11 is bonded to the liquid-permeable top layer 2 of the absorbent article by direct bonding.
  • direct bonding + direct bonding + direct bonding is adopted; in FIG. 6b In the embodiment, the combination of +, respectively, and + respectively is used.
  • liquid-permeable or liquid-impermeable backsheet 1 and the liquid-permeable or liquid-impermeable underlayer 14 and the surface of the absorbent article of the absorbent article, which are not separately applied to the liquid-permeable top layer 2 of the absorbent article and the absorbent article 11, may also be used.
  • the contact layer 15 is bonded (or only one of them is bonded)
  • the package bonding of them is simultaneously achieved by means of one through-hole encapsulation layer. This will be described in conjunction with Fig. 3 in the following embodiment 3.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • One or more first through holes 10 are provided in the above absorbent article, and the first through hole 10 penetrates from the liquid permeable top layer 2 to the liquid permeable or liquid impermeable bottom layer 1 of the absorbent article Absorbent items. Through the first through hole 10, the outside air can directly reach the enclosed space of the absorbent article and the body, thereby accelerating the discharge of moisture in the enclosed space to the outside of the body.
  • the first through hole 10 of the group (for example, as shown in FIG. 13) is provided with a leaky absorbent body 11,
  • Each of the leak-proof absorbent bodies 11 includes a liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorbent body, and a surface contact layer 15 having the same or similar outer shape as the liquid-permeable or liquid-impermeable backsheet 14.
  • a liquid swellable structure 16 (shown in Figures 2, 5, 6) is disposed between the liquid permeable or liquid impermeable backsheet 14 and the surface contact layer 15.
  • One (for example, as shown in FIGS. 2, 3, and 5) or a group (for example, as shown in FIG. 13) penetrating through the leaky absorbent body 11 is reserved or disposed on the leaky absorbent body 11.
  • the through-hole 17 penetrates the liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorber, the surface contact layer 15 and the liquid-swellable structure 16.
  • the first through hole 10 and the second through hole 17 are the same size or shape, and the first through hole 10 and the second through hole 17 completely coincide or nearly coincide in spatial arrangement. .
  • the absorbent article and the leak-proof absorbent body 11 are in the first through hole 10 by a crimping structure (not shown in the drawings) penetrating the first through hole 10 and the second through hole 17 It is tightly coupled to the peripheral region of the second through hole 17.
  • a crimping structure not shown in the drawings
  • the liquid permeable top layer 2 of the absorbent article is in the peripheral region of the first through hole 10 and the liquid permeable or liquid impermeable bottom layer 14 of the leaky absorbent body 11
  • the peripheral regions of the second through holes 17 are tightly coupled.
  • the inner surfaces of the first through hole 10 and the second through hole 17 are sealed in the buckle structure.
  • the buckle structure may be a flexible or rigid structure.
  • a snap e.g., a rivet (e.g., a garment rivet or a shoe rivet) may be employed as the crimping structure.
  • the buckle structure adopts a flexible structure.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • liquid-permeable top layer 2 of the absorbent article and the liquid-permeable or liquid-impermeable backsheet 1 and the leak-proof absorbent body 11 of the absorbent article are not separately permeated or combined with the related drawings.
  • encapsulation and bonding thereof are simultaneously achieved by means of a through-hole encapsulation layer.
  • One or more first through holes 10 are provided in the above absorbent article, and the first through hole 10 penetrates from the liquid permeable top layer 2 to the liquid permeable or liquid impermeable bottom layer 1 of the absorbent article Absorbent items. Through the first through hole 10, the air outside the body can be directly reached The absorbent article and the enclosed space of the user's body accelerate the drainage of moisture in the enclosed space to the outside of the enclosed space.
  • the first through hole 10 of the group (for example, as shown in FIG. 13) is provided with a leaky absorbent body 11, each of which includes a liquid permeable or liquid impermeable bottom layer 14, and the liquid permeable or
  • the surface contact layer 15 having the same or similar outer shape of the liquid-impermeable backsheet 14 encloses the liquid-swellable structure 16 between the liquid-permeable or liquid-impermeable backsheet 14 and the surface contact layer 15 (for example, FIGS. 3 and 5 , 6 shows).
  • the second through hole 17 penetrates the liquid-permeable or liquid-impermeable back layer 14 of the leak-proof absorber, the surface contact layer 15 and the liquid-swellable structure 16 .
  • the first through hole 10 and the second through hole 17 are the same size or shape, and the first through hole 10 and the second through hole 17 completely coincide or nearly coincide in spatial arrangement. .
  • a fourth through-hole encapsulation layer 25 formed by combining one or more sheets may be used to penetrate the first through-hole 10 of the absorbent article and the leak-proof absorbent body 11 a second through hole 17 , and one end of the fourth through hole encapsulating layer 25 and the surface contact layer 15 of the leaky absorbent body 11 are bonded at a peripheral region of the second through hole 17 , Combining heat pressing, locking, ultrasonic, sewing, etc., and bonding the other end of the fourth through-hole encapsulation layer 25 to the absorbent article by bonding, hot pressing, locking, ultrasonic, sewing, or the like
  • the liquid-permeable or liquid-impermeable backsheet 1 is bonded in a peripheral region of the first through-hole 10; the liquid-permeable top layer 2 of the absorbent article is in a peripheral region of the first through-hole 10 a portion of the liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorbent body 11 in the peripheral region of the second
  • the fourth through-hole encapsulation layer 25 may have a pleated structure.
  • the fourth through-hole encapsulation layer 25 is made of a liquid-impermeable material such as ethylene, polyethylene plastic, a liquid-impermeable non-woven fabric, a polyethylene or polypropylene film, and a non-liquid-permeable material coating.
  • the absorbent article of the present invention can directly exchange gas with the outside, the moisture characteristics of the absorbent article and the human body are closed and the contact area is greatly improved, so that the surface of the user's skin is more dry and comfortable.
  • the leaky absorbent body 11 is provided on the inner surface of the first through hole 10 for blocking the leakage of body exudates to the area outside the through hole.
  • the body surface is only in contact with the portion of the expanded leaky absorbent body 11, and voids may be formed at other portions, SP, compared with the conventional absorbent article.
  • the entire surface contact of the liquid-permeable top layer portion of the absorbent article with the human body surface becomes contact with only a small wet area, thereby greatly improving the surface environment and reducing diaper rash and dermatitis. And the odds of other illnesses.
  • the liquid-permeable or liquid-impermeable underlayer 14 of the leak-proof absorbent body has the same or similar outer shape as the surface contact layer 15, and may be a triangle, a circle, or a parallelogram. A combination of various shapes or shapes of a combination of line segments and arcs.
  • the second through hole 17 may be provided at any portion of the leaky absorbent body 11.
  • the second through hole 17 is located at a geometric center of the leaky absorbent body 11 or a peripheral region surrounding the geometric center.
  • the liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorbent body 11 may include: a liquid permeable nonwoven material such as spunbond, meltblown, carded web, hydraulic needle punching, wet forming, etc. Materials; other liquid permeable structures, such as porous foam, porous plastic film; water-absorbing materials, such as absorbent paper materials.
  • Suitable nonwoven materials can be made from natural fibers such as wood pulp or cotton fibers, rayon fibers such as polyester, polyethylene, polypropylene, viscose, rayon, etc. or from a mixture of natural and man-made fibers, as disclosed in patent 200680055017.0. to make.
  • the liquid-permeable or liquid-impermeable backsheet 14 of the leak-proof absorbent body 11 may be a hydrophilic stretchable nonwoven fabric, and the surface contact layer 15 of the leak-proof absorbent body 11 A material such as a hydrophobic non-stretchable nonwoven fabric can be used.
  • the surface contact layer 15 of the leak-proof absorbent body 11 may be provided with a hydrophobic non-woven fabric or a surface of the surface of the user's body surface by bonding, hot pressing, locking, ultrasonic, sewing, or the like. Foam, mesh structure, etc., to improve the comfort and dryness of the skin.
  • the liquid swellable structure 16 of the leaky absorbent body 11 may be referred to as cellulose fluff pulp, fabric layer, superabsorbent polymer or superabsorbent having water swellable properties, absorbent foam, absorbent a structure composed of a nonwoven material or the like, or a mesh or wrap structure formed by a hydrophilic or hydrophobic nonwoven fabric, or a water absorbent paper material, or a combination of a partially hydrophilic material and a partially hydrophobic material
  • the liquid swellable structure 16 of the leaky absorbent body 11 comprises a material and structure of a shaped structure employed in the absorbent body layer 3 of a conventional absorbent article to prevent the block.
  • the liquid-absorbent material such as a polymer or a superabsorbent in the liquid-swellable structure 16 of the leaky absorbent body 11 moves over a wide range in the leak-proof absorbent body 11.
  • the liquid-swellable structure 16 when the water content of the liquid-swellable structure 16 reaches a certain degree of liquid absorption in the range of 1/100 to 2/3 of its liquid saturation, the liquid-swellable structure 16 naturally expands.
  • the rear volume can block leakage of body fluids and the like from the first through hole 10 and the second through hole 17.
  • the liquid swellable structure 16 causes the leaky absorbent body 11 to expand in volume in a state of liquid absorption, but the expansion of the liquid swellable structure 16 does not damage the leaky absorbent body. 11.
  • the liquid absorbing structural structure 16 provided in the peripheral region of the second through hole 17 of the leaky absorbent body 11 has a larger thickness than other regions away from the second through hole 17 a plurality of liquid swellable materials (such as a superabsorbent polymer or superabsorbent), or a structure having better liquid swellability, etc., such that the second through hole 17
  • the liquid swellable structure 16 in the peripheral region is in a state in which the liquid absorption saturation is equal to the liquid saturation of the liquid swellable structure 16 in the adjacent region of the peripheral region of the second through hole 17,
  • the liquid-swellable structure 16 of the peripheral region of the two through-holes 17 has a greater thickness than the liquid-swellable structure 16 of the adjacent region.
  • This can be referred to as a ring hole thickening leak feature. With such a ring-hole thickening leakage feature, it is possible to better prevent leakage of body fluid from the second through hole 17.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • One or more first through holes 10 are provided in the absorbent article, and the first through holes 10 pass through the liquid permeable top layer 2 to the liquid permeable or liquid impermeable bottom layer 1 of the absorbent article. Absorbent articles. Through the first through hole 10, the outside air can directly reach the enclosed space of the absorbent article and the user's body, thereby accelerating the moisture in the enclosed space to the outside of the body.
  • the absorber layer 3 in the peripheral region of the first through hole 10 is disposed to be adjacent to the other first
  • the absorber layer 3 of the peripheral portion of the through hole 10 has a large thickness, a large amount of liquid swellable material (e.g., a superabsorbent polymer or a superabsorbent), or better liquid swellability and the like.
  • This structural feature is called a ring-hole thickening leak-proof structure.
  • the annular hole is thickened by the annular hole so that the peripheral region of the first through hole 10 has a liquid absorption saturation at a liquid absorption saturation that is less than or equal to a region adjacent to a peripheral region of the first through hole 10
  • the absorber layer 3 of the peripheral region of the first through hole 10 has a larger thickness than the absorber layer 3 of the adjacent region.
  • the peripheral region of the first through hole 10 may be formed into a cylindrical stepped or conical structure.
  • the absorber layer 3 that uniformly absorbs water forms a rectangular stepped state around the first through hole 10, preventing body fluid from the first Consistently piercing 10 leaks. Thereby, by such a ring-hole thickening leakage structure, leakage of body fluid from the first through hole 10 can be prevented.
  • the leak-proof absorbent body described in the foregoing embodiment may be omitted.
  • the leakage absorbent body and the ring hole thickening leakage structure It can also be combined at the same time.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • liquid absorbing expansion barrier dam structure employed in the absorbent article of the present invention will be mainly described with reference to the related drawings.
  • One or more first through holes 10 are provided in the absorbent article, and the first through hole 10 passes through the liquid permeable top layer 2 to the liquid permeable or liquid impermeable bottom layer 1 of the absorbent article. Sexual items. Through the first through hole 10, the outside air can reach the enclosed space of the absorbent article and the body, thereby accelerating the moisture in the enclosed space to the outside of the body.
  • a space is provided between the first through hole 10 and a body fluid such as urine or menstrual fluid leaving the body part of the user. Or a plurality of liquid absorbing expansion dams 12.
  • the liquid-absorbent expansion barrier dam 12 is comprised of a water permeable material or structure 22 (such as a water permeable nonwoven fabric) and a liquid swellable structure 16 encased therein, the liquid swellable structure 16 comprising pulp, cotton Such as fibers and materials having liquid absorbing properties, such as high (super) absorbent polymers.
  • the water permeable material or structure constituting the liquid absorption expansion barrier dam 12 may include: a liquid permeable non-woven material such as spunbond, melt blown, carded web, hydraulic needle punching, wet-laid, etc.; Other liquid permeable structures, such as porous foam, porous plastic film; water absorbing materials, such as absorbent paper materials.
  • Suitable nonwoven materials can be made from natural fibers (such as wood pulp or cotton fibers), rayon fibers (such as polyester, polyethylene, polypropylene, viscose, rayon, etc.) or from natural and artificial, as disclosed in patent 200680055017.0. Made of a mixture of fibers.
  • the liquid permeable material may also be made of flax fibers which are bonded to each other in a bonding mold, as disclosed in EP-A-1035818.
  • one side in the longitudinal direction of the liquid-absorbent expansion barrier dam 12 and its peripheral region are combined with the liquid-permeable top layer 2 of the absorbent article in a surface contact manner.
  • the liquid-absorbent expansion barrier dam 12 In the dry state, the liquid-absorbent expansion barrier dam 12 is small in volume and soft in touch, and is in a crouching state on the outer surface of the liquid-permeable top layer 2 of the absorbent article, and does not cause obvious user Discomfort.
  • the liquid-absorbent expansion barrier dam 12 is changed in volume after liquid absorption expansion Large, increased hardness, its internal high-absorbent polymer and other liquid swells, squeeze each other, form a dense impervious wall, prevent the body fluid from flowing directly to the first through hole 10 or / and guide the body fluid to other areas Preventing leakage of body fluid from the first through hole 10 .
  • the liquid-absorbent expansion barrier dam 12 may also be made of a water-permeable material 22 (such as a water-permeable nonwoven fabric or the like) and a part of the surface of the liquid-permeable top layer 2 of the absorbent article or The boundary of the partial surface is combined to form a three-dimensionally closed leakage dam enclosure, and the liquid swellable structure 16 is encapsulated in the closed dam enclosure to form the liquid absorption expansion dam 12.
  • a water-permeable material 22 such as a water-permeable nonwoven fabric or the like
  • the boundary contour of the contact surface of the liquid-absorbent expansion barrier dam 12 and the liquid-permeable top layer 2 may be a polygonal line, a corrugated shape, a line segment, a circular shape, a semicircular shape, a cross line, or a combination of a line segment and a circular arc.
  • the various shapes and the like formed are disposed between the first through hole 10 and a portion of the user's body fluid such as urine or menstrual fluid, or surround or partially or completely surround the first through hole 10,
  • the function of blocking and drainage is to prevent leakage of body fluid from the first through hole 10 (as shown in FIGS. 7, 9, and 10).
  • the liquid-swellable structure 16 of the liquid-absorbent expansion barrier dam 12 may be referred to as cellulose fluff pulp, fabric layer, superabsorbent polymer or superabsorbent, absorbent foam, absorbent nonwoven material or a structure composed of an analog or the like; or a network or a wrap structure formed by a hydrophilic or hydrophobic nonwoven fabric, or a water-absorbent paper material, or a combination of a partially hydrophilic material and a partially hydrophobic material, wrapped by a cellulose fluff pulp A structure formed by a combination of components such as a fabric layer, a superabsorbent polymer or a superabsorbent, an absorbent foam, an absorbent nonwoven material or the like.
  • the liquid-swellable structure 16 of the liquid-absorbent expansion barrier dam 12 comprises a material and structure of a shaped structure employed in the absorber layer 3 of the prior absorbent article to prevent the liquid-swelling
  • the liquid-absorbent material such as a polymer or a superabsorbent in the liquid-swellable structure 16 in the liquid-repellent dam 12 moves over a wide range in the liquid-absorbent expansion barrier dam 12.
  • the liquid-swellable structure 16 when the water content of the liquid-swellable structure 16 reaches a certain degree of liquid absorption in the range of 1/100 to 2/3 of the liquid saturation amount, the liquid-swellable structure 16 naturally expands.
  • the rear volume can block leakage of body fluid or the like from the first through hole 10 through the liquid absorption expansion barrier dam 12.
  • the liquid-absorbent expansion barrier dam 12 is not damaged by the expansion of the liquid-swellable structure 16.
  • a surface area close to the surface of the user on the opposite side of the contact surface of the liquid-absorbent expansion barrier dam 12 with the liquid-permeable top layer 2 of the absorbent article may be bonded, heat-pressed, latched, and sewn.
  • Ultrasonic non-woven fabrics or foams, mesh structures, etc. are combined with ultrasonic waves to improve the comfort and dryness of the surface of the user.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • One or more first through holes 10 are provided in the above absorbent article, and the first through hole 10 penetrates from the liquid permeable top layer 2 to the liquid permeable or liquid impermeable bottom layer 1 of the absorbent article Absorbent items. Through the first through hole 10, the outside air can directly reach the enclosed space of the absorbent article and the user's body, thereby accelerating the moisture in the enclosed space to the outside of the body.
  • the guide groove 13 refers to a groove which acts as a guide flow formed at a certain portion of the surface of the liquid-permeable top layer 2 in a state in which the absorbent article is in a state in which the absorbent article is inflated.
  • the guide groove 13 may be formed at a local position of the absorbent article by pressing, bonding, hot pressing, locking, sewing, ultrasonic wave, etc., for limiting the absorbent article after the liquid absorbing expansion
  • the maximum distance between the liquid permeable topsheet 2 and the liquid permeable or liquid impermeable backsheet 1 of the absorbent article is less than a certain value.
  • the specific value can be a value between 0.1 mm and 30 mm.
  • the specific value may also be a specific value less than or equal to the average thickness of the absorbent body layer 3 after the liquid absorbing expansion of the absorbent article.
  • a liquid swellable material having a smaller thickness than other portions may be used, or A small liquid swellable material, or a material and/or structure having a weak liquid swelling property, so that the height of the portion after the liquid absorbing expansion is smaller than the height of other portions, thereby forming a flow guiding groove.
  • a liquid swellable material having a smaller thickness than other portions may be used, or A small liquid swellable material, or a material and/or structure having a weak liquid swelling property, so that the height of the portion after the liquid absorbing expansion is smaller than the height of other portions, thereby forming a flow guiding groove.
  • other methods capable of forming a flow guiding groove are also contemplated by those skilled in the art. And the method described above and other suitable methods may be used in combination such that certain portions of the surface of the liquid permeable top layer 2 of the absorbent article form a certain groove in the state of liquid swell expansion, as A diversion channel 13 for diversion.
  • the contour of the guide groove 13 on the surface of the liquid permeable top layer 2 may be a line shape, a corrugation shape, a line segment, a circle shape, a semicircular shape, a triangle shape, a quadrilateral shape, a line segment cross shape, or a line segment or an arc
  • Various combinations of patterns and the like are provided between the first through hole 10 and the portion of the absorbent article user's urine, menstrual fluid, etc., which are separated from the body, or surrounded and partially or completely surrounded.
  • the first through hole 10 serves to guide the body fluid from flowing into the first through hole 10, thereby preventing body fluid from leaking from the first through hole 10.
  • the volume of the flow guiding groove 13 is small and the touch is soft, and the outer surface of the liquid-permeable top layer 2 of the absorbent article is in an invisible state, which does not cause significant discomfort to the user.
  • the absorbent body layer 3 becomes thicker and thicker, and the hardness is increased. At this time, the expansion of the absorbent body layer 3 at the portion of the flow guiding groove 13 can be restricted by local bonding. Alternatively or additionally, by using a liquid swellable material having a different expansion coefficient, a different thickness and/or a different amount at the portion of the flow guiding groove 13 at the flow guiding groove 13 and the absorbent body The adjacent regions of layer 3 have different degrees of expansion under the same external conditions.
  • the first through hole 10 may be a circular shape, a square shape, a diamond shape or a slit shape, or other various shapes formed by any combination of line segments and circular arcs.
  • the first through hole 10 is circular.
  • the absorbent article is joined to the periphery of the first through hole 10 and covers the through region of the first through hole 10 in a manner of knotting, crimping, ultrasonic or sewing to protect the privacy of the user.
  • the web material used is a hydrophobic material.
  • the second through hole 17 may be a circular shape, a square shape, a diamond shape or a slit shape, or other various shapes formed by any combination of line segments and circular arcs.
  • the second through hole 17 is circular.
  • a gas permeable structure such as a mesh or a yarn may be used to pass hot pressing and sticking.
  • a junction, a crimping, an ultrasonic wave or the like is combined with the absorbent article at a periphery of the second through hole 17 and covers a through region of the second through hole 17 to protect the privacy of the user.
  • the web material used is a hydrophobic material.
  • first through hole 10 and the second through hole 17 may each be covered with a mesh material, or the mesh material may be covered only on any one of them.
  • the liquid permeable top layer 2 and the liquid permeable or liquid impermeable underlayer 1 of the absorbent article may also be retained in the absorbent article at the area where the first through hole 10 is located.
  • a plurality of small holes, slits, and the like smaller than the first through holes 10 are provided in the liquid permeable underlayer 1 to form a mesh-like structure. In this way, it is also possible to achieve the purpose of venting while protecting the privacy of the user. This method is also applicable to the second through hole 17, and will not be described herein.
  • Embodiment 7 is a method of covering the mesh material and opening the small holes.
  • the liquid-permeable or liquid-impermeable underlayer of the absorbent article at the bottom layer 8 of the peripheral region is 1 Locally bonding with the liquid permeable topsheet 2 or other liquid permeable material or structure (e.g., liquid permeable nonwoven fabric, etc.) to form a bonded region and a non-bonding region between the bonded regions.
  • the unbonded area is surrounded by the bonding area to form a first enclosed space.
  • a plurality of liquid swellable structures 16 are disposed inside the first enclosed space.
  • the upper and lower surfaces are provided with a plurality of small holes, slits and the like penetrating through the inner and outer sides of the first closed space for ventilation.
  • the first enclosed space is not destroyed by the expansion of the liquid-swellable structure 16.
  • Such a structural form as described above is referred to as a selective gas permeable structure 9.
  • the size of the small holes and slits is not particularly limited as long as the components of the liquid swellable structure 16 do not leak from the small holes, slits, etc. to the first Just outside the enclosed space.
  • the orifice has a diameter of less than or equal to 2 mm.
  • the liquid permeable material or structure constituting the selective gas permeable structure 9 may include: a liquid permeable nonwoven material such as spunbond, melt blown, carded web, hydraulic needle punch, wet laid web, etc.; Liquid permeable structure, such as porous foam, porous plastic film; water absorbing material, such as absorbent paper material.
  • Suitable nonwoven materials can be made from natural fibers such as wood pulp or cotton fibers, rayon fibers such as polyester, polyethylene, polypropylene, viscose, rayon, etc. or from a mixture of natural and man-made fibers, as disclosed in patent 200680055017.0. to make.
  • the liquid permeable material or structure may also be made of flax fibers which are bonded to each other in a bonding mold, as disclosed in EP-A-1035818.
  • Embodiment 8 is a diagrammatic representation of Embodiment 8
  • the selective gas permeable structure 9 disposed at the bottom layer 8 of the peripheral region of the absorbent article has been previously described.
  • the selectively permeable structure 9 may also be provided at the location where the absorbent body of the absorbent article covers the bottom layer 7.
  • the liquid permeable or liquid-impermeable backing layer 1 of the absorbent article at the bottom layer 7 is covered by the absorbent body with the The liquid permeable topsheet 2 or another (i.e., additional) liquid permeable material or structure 21 is joined at a local location to form one or more selectively permeable structures 9.
  • Selectivity The gas permeable structure 9 includes a second layer formed by the liquid permeable topsheet 2 or another liquid permeable material surrounded by the bonded location and the liquid permeable or liquid impermeable backsheet 1 of the absorbent article. Closed space.
  • the additional liquid permeable material or structure 21 for forming the selective gas permeable structure 9 may be a liquid permeable material or structure additionally added in addition to the liquid permeable top layer 2, or may be A portion of the liquid permeable top layer 2.
  • junction points of the same second enclosed space are connected to form a closed curve.
  • a plurality of liquid swellable structures 16 are disposed inside the second closed space, and the second closed space is not damaged by the expansion of the liquid swellable structure 16.
  • composition of the liquid-swellable structure 16 does not separate from the pores, the gap, and the liquid-permeable or liquid-impermeable underlayer 1 of the absorbent article with the liquid-permeable top layer 2 or another
  • the liquid permeable material leaks to the outside of the second closed space at a portion where the local position is combined.
  • the foregoing describes the portion of the absorbent article covering the bottom layer 7, the liquid-permeable or liquid-impermeable backsheet 1 of the absorbent article and another liquid-permeable material or the liquid permeability
  • the top layer 2 and the liquid-swellable structure 16 disposed therebetween form a selectively permeable structure 9, but alternatively, the structure of the liquid-permeable top layer 2 and the absorber layer 3 at the respective portions may be maintained, only for the
  • the liquid permeable or liquid impermeable backsheet 1 is modified to form a selectively permeable structure 9 in the liquid permeable or liquid impermeable backsheet 1.
  • the liquid swellable structure 16 of the selective gas permeable structure 9 may be referred to as cellulose fluff pulp, fabric layer, superabsorbent polymer or superabsorbent, absorbent foam, a structure composed of an absorbent nonwoven material or the like; or a network or a wrap structure formed by a hydrophilic or hydrophobic nonwoven fabric, or a water-absorbent paper material, or a combination of a partially hydrophilic material and a partially hydrophobic material.
  • the structure is formed by a combination of components such as cellulose fluff pulp, fabric layer, superabsorbent polymer or superabsorbent, absorbent foam, absorbent nonwoven material or the like.
  • the liquid-swellable structure 16 when the water content of the liquid-swellable structure 16 reaches a certain degree of liquid absorption in the range of 1/100 to 2/3 of the liquid saturation amount, the liquid-swellable structure 16 naturally expands.
  • the rear volume is capable of blocking the leakage of body fluids and the like from the selective gas permeable structure 9.
  • the first enclosed space or the second enclosed space is not damaged by the expansion of the liquid-swellable structure 16.
  • the liquid swellable structure 16 inside the first closed space and the second closed space is in a dry small volume state.
  • the first enclosed space and the second enclosed space can complete the task of exchanging gases.
  • the liquid swellable structure 16 inside the first closed space and the second closed space absorbs and expands, and the first closed The space and the second enclosed space are filled, and the small holes or slits on both sides are sealed to prevent leakage of body fluid.
  • Figures 14-16 show a view of a super-breathable diaper wearing a leak-proof absorbent body in accordance with the present invention.
  • the super air permeable diaper shown in Figures 14-16 has a structure similar to that shown in Figure 1, but without a selective gas permeable structure.

Landscapes

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

Abstract

L'invention concerne un article absorbant ayant une super perméabilité à l'air, comprenant une couche supérieure (2) perméable aux liquides, une couche inférieure (1) perméable aux liquides ou imperméable aux liquides et une couche de rétention de liquide (3), absorbant les liquides, disposée entre ladite couche supérieure (2) et ladite couche inférieure (1). Afin de permettre l'article absorbant d'atteindre une perméabilité à l'air sans fuite de liquide ou fuite d'urine, l'article absorbant comprend un ou plusieurs premiers trous traversants (10) et au moins une structure de prévention de fuite correspondant aux premiers trous traversants (10). Les premiers trous traversants (10) pénètrent l'article absorbant dans la direction de l'épaisseur de celui-ci à la couche supérieure (2) à la couche inférieure (1), accélérant ainsi la décharge vers l'extérieur de l'humidité à partir de l'espace clos formé entre l'article absorbant et la surface corporelle de l'utilisateur. La structure de prévention de fuite peut être choisie parmi : un corps absorbant empêchant les fuites (11), une structure annulaire épaissie entourant les trous, une matière bloquant les liquides qui s'expanse lorsqu'elle absorbe des liquides (12), des canaux de guidage d'écoulement (13) et toute combinaison de ceux-ci afin d'empêcher une fuite de liquides contaminés à partir des trous traversants (10). La perméabilité à l'air de l'article absorbant peut également être accrue par l'introduction d'autres structures perméables facultatives (19) de remplacement ou auxiliaires.
PCT/CN2012/073251 2011-03-30 2012-03-29 Article absorbant ayant une super perméabilité à l'air WO2012130149A1 (fr)

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CN201110078220.2 2011-03-30

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WO2012130149A1 true WO2012130149A1 (fr) 2012-10-04

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Publication number Priority date Publication date Assignee Title
DE102013003755A1 (de) 2013-03-06 2014-09-11 Carl Freudenberg Kg Belüftungseinsatz

Citations (13)

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US4341217A (en) * 1980-11-17 1982-07-27 The Procter & Gamble Company Barrierless disposable absorbent article having an absorbent core encased in a homogeneous outer wrap
EP0238334A1 (fr) * 1986-03-20 1987-09-23 Shiseido Company Limited Produit absorbant
US4887602A (en) * 1988-01-11 1989-12-19 Weyerhaeuser Company Ventilated diaper or incontinent garment
US5571096A (en) * 1995-09-19 1996-11-05 The Procter & Gamble Company Absorbent article having breathable side panels
CN2484929Y (zh) * 2001-06-01 2002-04-10 肖冬梅 纸尿裤
US6506184B1 (en) * 1999-05-11 2003-01-14 Dansac A/S Venting/filter assembly, bag incorporating same and method of venting flatus gasses
CN1868430A (zh) * 2006-06-29 2006-11-29 孙仲河 一种通气窗式一次性尿裤
CN101460129A (zh) * 2006-06-30 2009-06-17 Sca卫生产品股份公司 吸收性物品
WO2009105000A1 (fr) * 2008-02-19 2009-08-27 Sca Hygiene Products Ab Bande de matière utilisée dans un article absorbant
CN201505226U (zh) * 2009-09-27 2010-06-16 重庆丝爽卫生用品有限公司 一种透气型卫生巾
CN201591693U (zh) * 2010-02-10 2010-09-29 重庆丝爽卫生用品有限公司 一种吸水透气型卫生巾
CN201591692U (zh) * 2010-02-10 2010-09-29 重庆丝爽卫生用品有限公司 一种新型透气型卫生巾
CN201618013U (zh) * 2010-03-30 2010-11-03 重庆丝爽卫生用品有限公司 一种透气防漏型卫生巾

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Publication number Priority date Publication date Assignee Title
CN200977231Y (zh) * 2006-12-08 2007-11-21 李新华 透气型卫生巾

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341217A (en) * 1980-11-17 1982-07-27 The Procter & Gamble Company Barrierless disposable absorbent article having an absorbent core encased in a homogeneous outer wrap
EP0238334A1 (fr) * 1986-03-20 1987-09-23 Shiseido Company Limited Produit absorbant
US4887602A (en) * 1988-01-11 1989-12-19 Weyerhaeuser Company Ventilated diaper or incontinent garment
US5571096A (en) * 1995-09-19 1996-11-05 The Procter & Gamble Company Absorbent article having breathable side panels
US6506184B1 (en) * 1999-05-11 2003-01-14 Dansac A/S Venting/filter assembly, bag incorporating same and method of venting flatus gasses
CN2484929Y (zh) * 2001-06-01 2002-04-10 肖冬梅 纸尿裤
CN1868430A (zh) * 2006-06-29 2006-11-29 孙仲河 一种通气窗式一次性尿裤
CN101460129A (zh) * 2006-06-30 2009-06-17 Sca卫生产品股份公司 吸收性物品
WO2009105000A1 (fr) * 2008-02-19 2009-08-27 Sca Hygiene Products Ab Bande de matière utilisée dans un article absorbant
CN201505226U (zh) * 2009-09-27 2010-06-16 重庆丝爽卫生用品有限公司 一种透气型卫生巾
CN201591693U (zh) * 2010-02-10 2010-09-29 重庆丝爽卫生用品有限公司 一种吸水透气型卫生巾
CN201591692U (zh) * 2010-02-10 2010-09-29 重庆丝爽卫生用品有限公司 一种新型透气型卫生巾
CN201618013U (zh) * 2010-03-30 2010-11-03 重庆丝爽卫生用品有限公司 一种透气防漏型卫生巾

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CN102727345A (zh) 2012-10-17

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