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WO1997015258A2 - Articles absorbants - Google Patents

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Publication number
WO1997015258A2
WO1997015258A2 PCT/EP1996/004558 EP9604558W WO9715258A2 WO 1997015258 A2 WO1997015258 A2 WO 1997015258A2 EP 9604558 W EP9604558 W EP 9604558W WO 9715258 A2 WO9715258 A2 WO 9715258A2
Authority
WO
WIPO (PCT)
Prior art keywords
water
absorbent
layer
fibers
nodules
Prior art date
Application number
PCT/EP1996/004558
Other languages
English (en)
Other versions
WO1997015258A3 (fr
Inventor
Ervin Dan
Ian Cheyne
Dirk Bouman
Original Assignee
Camelot Superabsorbents Limited
Camelot Superabsorbents B.V.
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
Priority claimed from GBGB9521780.8A external-priority patent/GB9521780D0/en
Application filed by Camelot Superabsorbents Limited, Camelot Superabsorbents B.V. filed Critical Camelot Superabsorbents Limited
Priority to EP96934766A priority Critical patent/EP0862401A2/fr
Priority to AU72964/96A priority patent/AU7296496A/en
Publication of WO1997015258A2 publication Critical patent/WO1997015258A2/fr
Publication of WO1997015258A3 publication Critical patent/WO1997015258A3/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
    • A61F13/53—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
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530131—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made in fibre but being not pulp
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/53051—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged
    • A61F2013/530547—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged positioned in a separate layer or layers
    • A61F2013/530554—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged positioned in a separate layer or layers and being fixed to a web
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/530583—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials characterized by the form
    • A61F2013/530635—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials characterized by the form in thin film
    • A61F2013/530642—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials characterized by the form in thin film being cross-linked or polymerised in situ
    • 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
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F2013/5315—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad with a tissue-wrapped core

Definitions

  • the present invention relates to absorbent articles.
  • wipes Included in the term absorbent articles are wipes, domestic wipes, industrial wipes, towels, tissues and toilet papers which will hereinafter collectively be referred to as wipes.
  • water will be used hereinafter to refer not only to water but also to aqueous media such as, in particular electrolyte solutions such as body fluids, and non-aqueous fluids.
  • aqueous media such as, in particular electrolyte solutions such as body fluids, and non-aqueous fluids.
  • water also includes fluids that are commonly spilled in industrial, medical or domestic environments.
  • absorbent articles are disposable diapers, sanitary napkins, tampons, pant liners, training pads, adult incontinence pads, coverstock for feminine hygiene products, surgical and dental sponges, bandages, patient underpads (for example pads of the type described in US3,814, 101, US4, 342,314 and EPO052403 which are incorporated herein by reference), medical tray pads, fenestration drapes, mortuary pads, casket liners, forensic examination pads, other medical related articles, food tray pads, soaker pads for food use, food preservation articles, seed germination pads, capillary mats; household pet litter, packaging, baby bibs, desiccant strips for anti-rust use, bath mats, sorbents, breast pads, underarm pads, wound covers, operating gowns, spill control materials, waste management materials; protective articles, filters, roofing materials, automotive trim, furniture, bedding, gasket sealants, pond liners, clothing, cable wrap, cement and soil modifiers. It will be understood that some of the articles referred to
  • the non- water-absorbent materials are fibers
  • the water-absorbent polymer compositions are generally incorporated into a non-woven web of the non- water-absorbent fibers.
  • These polymers may be in any suitable form including powders, particles, granules, or fibers; the fibers may be curled and/or crimped. Details of such curled/crimped fibers may be found in US4,822,453, 4,888,453, 5,462,793 and 4,898,462 which are incorporated herein by reference.
  • the water-absorbent polymer may be coated on the whole or a part of the surface of other materials such as non- water-absorbent fibers. Details of one type of fiber of this type may be found in WO96/ 15307 which is incorporated herein by reference.
  • U.S. 3,954,721 and 3,983,095 disclose preparations for derivatives of copolymers of maleic anhydride with at least one vinyl monomer in fibrous form. The fibrous copolymers are rendered hydrophillic and water- swellable by reaction with ammonia or an alkali metal hydroxide.
  • U.S. 3,810,468 discloses lightly cross-linked olefin-maleic anhydride copolymers prepared as substantially linear copolymers and then reacted with a diol or a diamine to introduce cross-linking.
  • European Published Application No. 0 268 498 (inco ⁇ orated herein by reference) describes a water-absorbent composition formed by causing a substantially linear polymer of water-soluble ethylenically unsaturated monomer blends comprising carboxylic and hydroxylic monomers to cross-link internally.
  • water-absorbent compositions are those produced from a copolymer of an ⁇ , ⁇ unsamrated monomer having at least one pendant unit selected from a carboxylic acid group and derivatives thereof and a copolymerisable monomer.
  • carboxylic acid groups include carboxylic acid salt groups, carboxylic acid amide groups, carboxylic acid imide groups, carboxylic acid anhydride groups and carboxylic acid ester groups.
  • water-absorbent compositions can be found in US 4,798,861 , WO 93/17066, WO 93/25735, WO 93/24684, WO 93/12275 EP 0 401 044, 0 269 393, 0 326 382, 0 227 305, 0 101 253, 0 213 799, 0 232 121, 0 342 919, 0 233 014, 0 268 498 and 0 397 410, GB 2 082 614, 2 022 505, 2 270 030, 2 269 602 and 2 126 591 , U.S. 4,418, 163, 3,989,586, 4,332,917, 4,338,417, 4,420,588 and 4, 155,957 and FR 2 525 121 which are inco ⁇ orated herein by reference.
  • the non-water-absorbent fibers used to form the above-mentioned absorbent articles are generally formed as a non-woven web by conventional means such as by air- laying.
  • the water-absorbent material is generally included during the formation of the non- woven web.
  • the fibers are then bonded, for example by the action of an adhesive, including water, and/or heat.
  • an absorbent article may feel damp to the touch and water may even leak from the article.
  • the effectiveness of the article to absorb water may be reduced by the phenomenon known as gel blocking.
  • an absorbent article is formed from a non-water-absorbent layer having a coating on at least one side comprising a water-absorbent composition.
  • an absorbent article comprising a first layer of a non-water-absorbent substrate having applied to at least one side thereof a second layer comprising a water-absorbent composition.
  • the absorbent article may comprise a first layer of a non-water-absorbent substrate having applied to both sides thereof a second layer comprising a water-absorbent composition.
  • the second layer may be provided as a preformed water-absorbent composition which is preferably in the form of fibers.
  • a non-woven web of, or including, water-absorbent material may be formed and then laminated to the first layer.
  • the second layer may be attached to the first layer by means of an adhesive.
  • the second layer may be attached to the first layer using water as adhesive.
  • the first and second layers may be attached to the first layer by fiber entanglement caused by, for example, embossing techniques.
  • the water-absorbent composition may be applied to the first layer as discrete fibers or particles.
  • the second layer may be formed from a composition which on curing becomes water-absorbent. That is to say, a composition which on curing becomes water-absorbent may be coated onto the first layer by any suitable means, including spraying and dipping. The article is then treated to cause the composition to cure such that it becomes water-absorbent.
  • the water-absorbent composition is free to swell in the direction away from the non-water-absorbent substrate.
  • the absorbent article is a flexible article such as a wipe, medical tray pads, filters, pant liners and the like and where the water-absorbent layer is located on only one side of the non-water-absorbent layer, the absorbent article having been used can be folded such that the water absorbent layer is innermost prior to disposal. This is particularly important where the absorbent article is a wipe, drape or similar article and which may have been used to absorb, for example, blood.
  • the non-water-absorbent substrate may be formed from any suitable material. It is preferably a non-woven web of non-water- absorbent fibers. However, a woven fabric of non- water-absorbent fibers may be used. Suitable non- water- absorbent fibers include namral materials such as wood pulp or cellulose or synthetic materials such as synthetic cellulose, viscose, polyester, non-water-absorbent polymers of ethylene, non-water-absorbent polymers of propylene, polyamide and ethylene-propylene copolymer fibers, and mixmres thereof with polyester, polyethylene and polypropylene fibers being particularly preferred.
  • non-water-absorbent substrate is formed from a non-woven web of non- water-absorbent fibers it may be formed by any suitable means, such as air laying, wet laying, melt-blowing, spin-binding, carding and needling techniques.
  • the fibers of the non-water- absorbent layer may be bonded using any conventional binder. Binding may take place before or after the or each water-absorbent layer is applied to the non- water- absorbent layer.
  • non-water-absorbent layer is a non-woven web
  • a binder may be omitted. The presence of the water-absorbent layer will then serve to bind the web of the non- water- absorbent layer.
  • the water-absorbent layer is discontinuous.
  • the water-absorbent layer is formed of spaced nodules of a preformed water-absorbent composition or nodules of a composition which on curing becomes water-absorbent on the surface of the non- water-absorbent layer.
  • Arranging the water-absorbent material as spaced nodules provides increased space for the water-absorbent composition to swell.
  • the nodules are so spaced that on abso ⁇ tion of water, each swollen nodule does not impinge on any other nodule. Any suitable size and spacing of the nodules may be selected.
  • the absorbency of the article may be optimised.
  • the nodules are spaced such that an absorbtion they are caused to impinge on each other.
  • the absorbent article is, for example, cable wrap
  • the nodules may be spaced such that on swelling each nodule impinges on those surrounding it. This has particular advantages as the nodule will absorb an amount of water and will therefore swell. Once the nodules have swollen such that they impinge on each other, further water is not absorbed and effective protection for the cable is achieved. Without wishing to be bound by any particular theory, it is believed that once the nodules impinge the phenomenon of gel blocking prevents the abso ⁇ tion of any additional water.
  • the absorbent article is a pond liner
  • the external surface of the liner that is the surface that is removed from the water of the pond
  • the nodules may be coated with nodules, the nodules may be spaced such that on swelling each nodule impinges on those surrounding it. This has particular advantages as in the event that the liner is damaged and starts to leak, the nodules will absorb an amount of water and will therefore swell. Once the nodules have swollen such that they impinge on each other, further water is not absorbed and further leakage may be prevented.
  • the use of the gel blocking technique may be employed where the article is a gasket, such as a gasket for use as a sealant in, for example cylinder blocks and heads.
  • At least one surface of the gasket may be coated with nodules, the nodules may be spaced such that on swelling each nodule impinges on those surrounding it. This has particular advantages as in the event that the leakage occurs, the nodules will absorb an amount of water and will therefore swell. Once the nodules have swollen such that they impinge on each other, further water is not absorbed and further leakage may be prevented.
  • the water-absorbent layer may be formed by any suitable means including dipping and spray coating. Where the water-absorbent layer consists of spaced nodules they may be coated onto the non-water-absorbent layer by any suitable means including printing, spraying and pressing. In a particularly preferred embodiment the non-water-absorbent layer is wet laid and, prior to drying, the pre-formed water- absorbent composition, either as a non- woven or woven layer or discrete fibers or particles, is then simply laid onto the wet layer. The water present in the non-water absorbent layer may be sufficient to bond the water-absorbent fibers and no additional adhesive between the layers may be required.
  • the water-absorbent article of the present invention may additionally include a further non- water-absorbent layer above the water-absorbent layer. This arrangement is particularly advantageous where the non-water-absorbent layer is discontinuous and is preferably in the form of spaced nodules.
  • the water-absorbent layer is applied to the non-water-absorbent substrate in the form of a syrup that requires curing to become water-absorbent it is not necessary to use adhesive to bond the layers together.
  • the additional non-water-absorbent layer may be applied to the water-absorbent layer prior to curing.
  • water-absorbent layer is applied to the non- water-absorbent substrate in the form of pre-formed water-absorbent compositions, such as water-absorbent fibers, may be applied to wet laid substrate.
  • the additional layer may be applied in any suitable form, including in a dry form. The combined action of the water in the wet- laid substrate and the water-absorbent composition is sufficient to bind the strucmre together.
  • the substrate and the additional layer are dry it is necessary to add water to at least one of the layers. In a preferred embodiment it is only necessary to add water to one layer.
  • the water-absorbent layer may be formed by a tow of water-absorbent fibers. These may then be laid as strands over the non- water-absorbent substrate.
  • the spacing of the strands will be chosen depending on whether the strands are intended to improve absorbency or to form a block.
  • the strands are spaced such that as each strand swells as it absorbs it does not impinge on the adjacent strands and where it is intended that the a block is to be formed, the strands are spaced such that as each strand swells as it absorbs it impinges on the adjacent strands.
  • water-absorbent fluff for use in absorbent cores of, for example, diapers and sanitary towels.
  • the fluff used in diapers and sanitary towels is produced from cellulosic material such as wood.
  • the cellulosic material is normally formed as a sheet and then rolled prior to being treated in a hammer mill to form the fluff.
  • the conventional cellulosic material is coated on at least one side with water-absorbent composition. If the water-absorbent composition is a material which becomes water-absorbent on curing, the coated material may then be treated to cause the material to cure.
  • the cellulosic material is then rolled and treated in the hammer-mill in the conventional manner.
  • the amount of water-absorbent material may be controlled by applying the water-absorbent composition as nodules; the spacing of the nodules may be adjusted to control the amount of water-absorbent composition in the resultant fluff.
  • the amount of water- absorbent material in the fluff is preferably 15 to 40%, more preferably 20 to 30%, most preferably 25 % of the finished fluff.
  • the Free Swell Index test procedure used is described in U.S. Pat No. 4454055, the teachings of which are inco ⁇ orated herein by reference.
  • To determine the Free Swell Index at atmospheric (room) pressure the samples to be tested were placed in an empty W-shaped tea bag.
  • the tea bag containing the samples was immersed in brine (0.9 wt% NaCl) for 10 minutes, removed and allowed to sit on a paper towel for 30 seconds to remove surface brine.
  • the Free Swell Index of the sample that is the units of liquid absorbed per each unit of sample is calculated using the following formula:
  • the tea bag containing the fiber sample was immersed in brine and surface brine had been removed, it was immediately placed in a 16 cm ID Buchner funnel fitted with a 2000 ml sidearm vacuum filter flask and connected to a manometer. A piece of dental dam rubber sheeting was securely fixed over the mouth of the funnel such that the sheeting just rested on the tea bag. Next, a vacuum sufficient to create the desired pressure was drawn on the flask for a period of 5 minutes, and the Free Swell Index under pressure was calculated using the above formula.
  • a 20 gsm PET non- woven fabric of width 56cm was coated with a 30% syrup concentration of a solution of an isobutylene/maleic anhydride copolymer that has been hydrolysed and neutralised to form a sodium salt and 3 % butanediol and 2% glycerol as crosslinkers.
  • the nodules, which had a diameter of 2 - - mm were spaced at the following densities:
  • Example 1 40 dots/cm 2
  • Example 2 10 dots/cm 2
  • Example 3 12 dots/cm 2
  • the coated fabric was dried at 110°C in a 6m long air through oven (1.2 min drying time).
  • a sample of a substrate of width 56 cm was coated with a syrup of a solution of an isobutylene/maleic anhydride copolymer that had been hydrolysed and neutralised to form a sodium salt and 3% butanediol and 2% glycerol as crosslinkers.
  • the nodules, which had a diameter of 2-3 mm were spaced at a density of 12 dots/cm 2 .
  • the coated fabric was dried at 110°C in a 6m long air through oven (1.2 min drying time). Crosslinking then occurred at 175° C for 15 minutes in a laboratory oven.
  • Substrate 44 23 50 17.5 38 - Weight g/m 2

Landscapes

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

Abstract

On décrit un article absorbant dans lequel un substrat n'absorbant pas l'eau est revêtu, sur au moins un côté, d'une seconde couche comprenant une composition absorbant l'eau. On peut appliquer cette couche absorbant l'eau en tant que matériau polymère préformé ou en tant que sirop pouvant durcir in situ afin de former le matériau absorbant l'eau.
PCT/EP1996/004558 1995-10-24 1996-10-21 Articles absorbants WO1997015258A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96934766A EP0862401A2 (fr) 1995-10-24 1996-10-21 Articles absorbants
AU72964/96A AU7296496A (en) 1995-10-24 1996-10-21 Absorbent articles

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9521780.8 1995-10-24
GBGB9521780.8A GB9521780D0 (en) 1995-10-24 1995-10-24 Absorbent article
GBGB9604572.9A GB9604572D0 (en) 1995-10-24 1996-03-04 Absorbent article
GB9604572.9 1996-03-04

Publications (2)

Publication Number Publication Date
WO1997015258A2 true WO1997015258A2 (fr) 1997-05-01
WO1997015258A3 WO1997015258A3 (fr) 1997-08-14

Family

ID=26307996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/004558 WO1997015258A2 (fr) 1995-10-24 1996-10-21 Articles absorbants

Country Status (4)

Country Link
EP (1) EP0862401A2 (fr)
AU (1) AU7296496A (fr)
CA (1) CA2242638A1 (fr)
WO (1) WO1997015258A2 (fr)

Cited By (6)

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EP0893113A1 (fr) * 1997-07-25 1999-01-27 The Procter & Gamble Company Articles absorbants comprenant une couche perméable au gaz et expansible au contact des liquides
WO1999064084A1 (fr) * 1998-06-09 1999-12-16 Camelot Technologies Limited Parties centrales absorbant l'eau pour articles absorbant l'eau
US6436508B1 (en) 1997-07-25 2002-08-20 The Procter & Gamble Company Absorbent articles having a liquid swellable material coated breathable backsheet
WO2003076711A1 (fr) * 2002-03-08 2003-09-18 Basf Aktiengesellschaft Revetement de sol contenant des polymeres superabsorbants
WO2004026353A1 (fr) * 2002-09-18 2004-04-01 Kimberly-Clark Worldwide, Inc. Articles absorbants comprenant une bande de matiere de retention superabsorbante
US7355091B2 (en) 2002-09-18 2008-04-08 Kimberly-Clark Worldwide, Inc. Elastomeric nonwoven with attached superabsorbent polymer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0893113A1 (fr) * 1997-07-25 1999-01-27 The Procter & Gamble Company Articles absorbants comprenant une couche perméable au gaz et expansible au contact des liquides
WO1999004741A1 (fr) * 1997-07-25 1999-02-04 The Procter & Gamble Company Articles absorbants comportant une feuille inferieure respirante pouvant gonfler au contact de liquides
US6436508B1 (en) 1997-07-25 2002-08-20 The Procter & Gamble Company Absorbent articles having a liquid swellable material coated breathable backsheet
WO1999064084A1 (fr) * 1998-06-09 1999-12-16 Camelot Technologies Limited Parties centrales absorbant l'eau pour articles absorbant l'eau
WO2003076711A1 (fr) * 2002-03-08 2003-09-18 Basf Aktiengesellschaft Revetement de sol contenant des polymeres superabsorbants
WO2004026353A1 (fr) * 2002-09-18 2004-04-01 Kimberly-Clark Worldwide, Inc. Articles absorbants comprenant une bande de matiere de retention superabsorbante
US7355091B2 (en) 2002-09-18 2008-04-08 Kimberly-Clark Worldwide, Inc. Elastomeric nonwoven with attached superabsorbent polymer

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AU7296496A (en) 1997-05-15
EP0862401A2 (fr) 1998-09-09
WO1997015258A3 (fr) 1997-08-14
CA2242638A1 (fr) 1997-05-01

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