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WO1997039780A1 - Materiaux absorbants a stabilite de structure accrue a l'etat sec aussi bien qu'a l'etat humide et leurs procedes de production - Google Patents

Materiaux absorbants a stabilite de structure accrue a l'etat sec aussi bien qu'a l'etat humide et leurs procedes de production Download PDF

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Publication number
WO1997039780A1
WO1997039780A1 PCT/US1997/006603 US9706603W WO9739780A1 WO 1997039780 A1 WO1997039780 A1 WO 1997039780A1 US 9706603 W US9706603 W US 9706603W WO 9739780 A1 WO9739780 A1 WO 9739780A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent
air stream
gelling particles
absorbent material
polycationic polymer
Prior art date
Application number
PCT/US1997/006603
Other languages
English (en)
Inventor
Ebrahim Rezai
Kesyin Hsueh
Original Assignee
The Procter & Gamble Company
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 The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to EP97922366A priority Critical patent/EP1021214A1/fr
Priority to US09/171,049 priority patent/US6730387B2/en
Priority to CA002251931A priority patent/CA2251931C/fr
Priority to AU28059/97A priority patent/AU2805997A/en
Publication of WO1997039780A1 publication Critical patent/WO1997039780A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
    • C08L101/14—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/225—Mixtures of macromolecular compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/58—Adhesives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents

Definitions

  • Water-insoluble, water-swellable, hydrogel-forming absorbent polymers are capable of absorbing large quantities of liquids such as water, body fluids (e.g., urine, blood, menstrual fluid), industrial fluids and household fluids and are further capable of retaining such absorbed liquids under moderate pressures. These absorption characteristics of such polymer materials make them especially useful for incorporation into absorbent articles such as disposable diapers, adult incontinence pads and briefs, and catamenial products such as sanitary napkins, and the like.
  • prior absorbent articles have generally comprised relatively low amounts (e.g., less than about 50% by weight) of absorbent gelling particles of the WAHPs.
  • relatively low amounts e.g., less than about 50% by weight
  • absorbent gelling particles of the WAHPs See, for example, U.S. Patent 4,834,735 (Alemany et. al), issued May 30, 1989. It discloses that an absorbent structure or core contains preferably from about 9 to about 50% of WAHP in the fibrous matrix.
  • Unfortunately several problems are encountered when one attempts to provide a thin absorbent core having more than 50% concentration of absorbent gelling particles by weight.
  • absorbent articles have the limitation that the absorbent gelling particles are not immobilized and are free to migrate(shift) during the manufacturing process and/or use(wearing). Migrations(shifting) of the absorbent gelling particles during manufacture can lead to absorbent material handling losses during manufacturing operations as well as nonhomogerous incorporation of the particles being used. A more significant problem, though, occurs when these absorbent gelling particles of WAHPs migrate during or after swelling. This inability to fix the particles at optimum locations leads to an insufficient urine storage capacity in one area and over-capacity in other areas due to the lack of stability.
  • the glue microfiber used herein can be meltblown to form fibers that are tacky in at least one step of the manufacture of the absorbent materials. It is possible that the glue microfiber are initially fixed the absorbent gelling particles to the desired location of the absorbent materials during the manufacturing process.
  • WAHPs useful in the present invention have a plurality of anionic, functional groups, such as sulfonic acid, and more typically carboxy, groups.
  • polymers suitable for use herein include those which are prepared from polymerizable, unsaturated, acid- containing monomers.
  • such monomers include the olefinically unsaturated acids and anhydrides that contain at least one carbon to carbon olefinic double bond. More specifically, these monomers can be selected from olefinically unsaturated carboxylic acids and acid anhydrides, olefinically unsaturated sulfonic acids, and mixtures thereof.
  • non-acid monomers can also be included, preferably in minor amounts, in preparing the WAHPs herein.
  • Such non-acid monomers can include, for example, the water-soluble or water-dispersible esters of the acid- containing monomers, as well as monomers that contain no carboxylic or sulfonic acid groups at all.
  • Optional non-acid monomers can thus include monomers containing the following types of functional groups: carboxylic acid or sulfonic acid esters, hydroxyl groups, amide-groups, amino groups, nitrile groups, quaternary ammonium salt groups, aryl groups (e.g., phenyl groups, such as those derived from styrene monomer).
  • Olefinically unsaturated sulfonic acid monomers include aliphatic or aromatic vinyl sulfonic acids such as vinylsulfonic acid, allyl sulfonic acid, vinyl toluene sulfonic acid and styrene sulfonic acid; acrylic and methacrylic sulfonic acid such as sulfoethyl acrylate, sulfoethyl methacrylate, sulfopropyl acrylate, sulfopropyl methacrylate, 2-hydroxy-3-methacryloxypropyl sulfonic acid and 2-acrylamide-2-methyipropane sulfonic acid.
  • vinylsulfonic acid allyl sulfonic acid, vinyl toluene sulfonic acid and styrene sulfonic acid
  • acrylic and methacrylic sulfonic acid such as sulfoethyl acrylate, sulf
  • particle size is defined as the dimension determined by sieve size analysis.
  • a particle that is retained on a U.S.A. Standard Testing Sieve with 710 micron openings (e.g., No. 25 U.S. Series Alternate Sieve Designation) is considered to have a size greater than 710 microns;
  • a particle that passes through a sieve with 710 micron openings and is retained on a sieve with 500 micron openings e.g., No. 35 U.S, Series Alternate Sieve Designation
  • a particle that passes through a sieve with 500 micron openings is considered to have a size less than 500 microns.
  • the term "diaper” refers to a garment, generally worn by infants and incontinent persons, that is worn about the lower torso of the wearer.
  • a preferred diaper configuration for a diaper comprising an absorbent core is described generally in U.S. Patent 3,860,003 (Buell), issued January 14, 1975.
  • Alternatively preferred configurations for disposable diapers herein are also disclosed in U.S. Patent 4,808,178 (Aziz et. al), issued February 28, 1989; U.S. Patent 4,695,278 (Lawson), issued September 22, 1987; U.S. Patent 4,816,025 (Foreman), issued March 28, 1989; and U.S. Patent 5,151 ,092 (Buell et. al.), issued September 29, 1992.
  • FIG. 1 illustrates a preferred apparatus useful in the process of the present invention.
  • the forming apparatus generally indicated as 1 , is composed of a particle applying unit 10, and a carrier layer apparatus 11.
  • the particle applying unit 10 includes an absorbent gelling particles applying unit 12, a glue microfibers applying unit 16 and a polycationic polymer spray unit 17.
  • the absorbent gelling particles are first loaded in, for example, a K- tron screw feeder 12 for continuously feeding absorbent gelling particles to Vibratory feeder 13 and then hopper 14. After absorbent gelling particles are carried away from the outlet of hopper 14 into an eductor 15, absorbent gelling particles leave the nozzle 16 as the first air stream 21 by about 50-psi air stream.
  • the solution containing the polycationic polymer is then applied to a plurality of the absorbent gelling particles.
  • at least two, preferably all, of the absorbent gelling particles have at least some portion covered with the solution.
  • at least 70% of the surface area of the gelling particles are covered with the solution applied thereon.
  • the solution can be applied using any of the various techniques and apparatus well known in the art which are suitable for applying a solution to a material including coating, dumping, pouring, dropping, spraying, atomizing, condensing, or immersing the solution onto the absorbent gelling particles.
  • the polycationic polymer is applied, preferably greater than about 90% of the surface area of the gelling particles is covered with the solution.
  • the method of forming an absorbent material comprises (a) forming a first air stream comprising absorbent gelling particles comprising a WAHP; (b) forming a second air stream comprising a polycationic polymer; (c) merging the second air stream with the first air stream to form an integrated air stream, wherein the polycationic polymer bonds to the absorbent gelling particles; (d) forming a third air stream comprising glue microfibers; (e) merging the integrated air stream with the third air stream to form a mixture air stream; and (f) directing the mixture air stream onto a carrier layer so the absorbent gelling particles bonded to the polycationic polymer adhere to the glue microfibers, and the glue microfibers adhere to the carrier layer.
  • the second air stream is formed a temperature of at least about 400°C and about 50 psi air pressure at sonic velocity.
  • the method comprises (a) applying polycationic polymer fibers comprising a polycationic polymer having a concentration of from about 80% to about 99% by weight onto absorbent gelling particles comprising a WAHP; and (b) applying the absorbent gelling particles onto a carrier layer; wherein the polycationic polymer fibers act as an adhesive between the absorbent gelling particles and the carrier layer.
  • the polycationic polymer fiber has the molecular weight of at least about 70,000.
  • the method comprises (a) forming a first air stream containing polycationic polymer fibers; (b) forming a second air stream containing absorbent gelling particles comprising a WAHP; (c) merging the second air stream with the first air stream to form an integrated air stream, wherein the polycationic polymer fibers bond to the absorbent gelling particles; and (d) directing the integrated air stream onto a carrier layer so that the absorbent gelling particles bond to the polycationic polymer fibers on the carrier layer.
  • Gel volume of a WAHP is defined as its retention absorbent capacity after swollen in an excess of Jaycee Synthetic Urine. It provides a measure of the maximum absorbent capacity of the polymer under conditions of use where the pressures on the polymer are relatively low. Gel volume is determined by centrifuge capacity method described below by using the Jaycee Synthetic Urine. The gel volume is calculated on a dry-weight basis. The dry weight used in the gel volume calculation is determined by oven drying the WAHP at 105°C for three hours. All of the chemicals are of reagent grade. The pH of the Jaycee Synthetic Urine is in the range of 6.0 to 6.4.
  • a composite in accordance with the present invention is prepared on a process line for laminate production illustrated in FIG 1.
  • Styrene-lsoprene-Styrene block copolymer (HL-1358-XZP) produced by H.B. Fuller Co. is used as a glue microfiber, and is heated and kept at least 350°C during laminate production process.
  • L76lf produced by Nippon Shokubai Co. Ltd. is used as absorbent gelling particles, and has particle size distribution ranging from 300 ⁇ m to 600 ⁇ m.
  • the Polyethyleneimine produced by Wako Chem Co. is used as a polycationic polymer, and is a 30% solid and has molecular weight of 70,000 Daltons.
  • a tissue produced by Havix Company LTD is used as a wet laid tissue of 18 gms and has the tensile strength of 1.1 Kg/in in mechanical direction.
  • L76lf is prepared in K-tron screw feeder.
  • L76lf is loaded in a K-tron screw feeder for continuously feeding L76lf into a vibrator feeder and then a hopper.
  • a compressed air stream is kept at 50 psi air pressure.
  • L76lf is carried away from the outlet of the hopper into an educator and is combined with the compressed air stream, so as to provide a first air stream.
  • Injection rate of the first air stream of L76lf is kept about 1.0 msec 1 which is adjusted to match the web line speed.
  • the extruded HL-1358-XZP is combined with an air stream, so as to provide a second air stream.
  • the second air stream is kept at a temperature of about 400°C and about 50 psi air pressure at about sonic velocity.
  • the second air stream of HL-1358-XZP is controlled to deliver 10 g/m 2 basis weight of the laminate production.
  • the operation range of the second air stream can be between about 3.0 gm/m2 and about 50.0 gm/m2.
  • a tissue is introduced to the vacuum conveyor at a typical speed of about 70 meter/min.. As the tissue is run over the vacuum conveyor, the incoming integrated air stream is attracted and firmly attached to the tissue.
  • the tissue width is at least about 23 cm and a coverage width of the integrated air stream is at least about 9.50 cm.
  • a polyethyleneimine is dissolved in distilled water at a concentration of from about 10 to about 20% by weight.
  • a third air stream spray is forwarded an air pressure spray system (B1/8 BAU-SS+SUV 67-SS from Spraying System Co. of 0.5-1.2 Kg/cm 2 ) containing a pre-agitated solution of polyethyleneimine and water is located after the integrated air stream containing HL-1358-XZP and L76lf laydown.
  • the speed-of spraying and the level of polyethyleneimine solution is controlled at 8 gm/m2, which is equal to about 2.0% by weight of the laminate production.
  • a folding board is placed next to the third air stream spray of polyethyleneimine solution.
  • Tissue, L76lf, HL-1358-XZP and polyethyleneimine are folded to form an edge closed laminate structure of about 10 cm final width.
  • the laminate production is wound at the end of the line.
  • the thickness of a formed laminate of about 310 gm/m2 absorbent gelling particle is about 1.3 mm.
  • the laminate production properties comprising this absorbent material made according to this example are evaluated.
  • the basic composition of sample is similar to Example 1, except no third air stream spray of polyethyleneimine additive is used.
  • the laminate production properties comprising this absorbent material made according to this example are evaluated.
  • the Wet Burst Strength and The Tea Bag gel Volume is 25 gm and 35 g/g.
  • the laminate production properties comprising this absorbent material made according to this example are evaluated.
  • the Wet Burst Strength and The Tea Bag gel Volume is Ogm and 38g/g. Table-1. Tea bag gel volume and effects on wet strength by adding polyethyleneimine

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Matériau absorbant à stabilité de structure sensiblement améliorée à l'état sec aussi bien qu'à l'état humide. Ces matériaux sont notablement moins susceptibles de subir des pertes de particules gélifiantes absorbantes au cours des manipulations faisant partie des opérations de fabrication. Lesdites particules gélifiantes ne subissent par ailleurs pas de déplacement au cours de leur gonflement par des fluides ou après. Le matériau absorbant comprend des particules gélifiantes absorbantes comprenant (a) un polymère formant hydrogel, absorbant et insoluble dans l'eau; (b) un polymère polycationique lié aux particules gélifiantes absorbantes au niveau de leur surface; (c) des microfibres d'adhésif dispersées dans lesdites particules gélifiantes absorbantes; et (d) une couche de support liée auxdites particules par les microfibres d'adhésif. L'invention se rapporte en outre à un procédé de fabrication des matériaux absorbants et aux articles absorbants comprenant lesdits matériaux.
PCT/US1997/006603 1996-04-24 1997-04-24 Materiaux absorbants a stabilite de structure accrue a l'etat sec aussi bien qu'a l'etat humide et leurs procedes de production WO1997039780A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP97922366A EP1021214A1 (fr) 1996-04-24 1997-04-24 Materiaux absorbants a stabilite de structure accrue a l'etat sec aussi bien qu'a l'etat humide et leurs procedes de production
US09/171,049 US6730387B2 (en) 1996-04-24 1997-04-24 Absorbent materials having improved structural stability in dry and wet states and making methods therefor
CA002251931A CA2251931C (fr) 1996-04-24 1997-04-24 Materiaux absorbants a stabilite de structure accrue a l'etat sec aussi bien qu'a l'etat humide et leurs procedes de production
AU28059/97A AU2805997A (en) 1996-04-24 1997-04-24 Absorbent materials having improved structural stability in dry and wet states and making methods therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8/102736 1996-04-24
JP10273696A JP3720118B2 (ja) 1996-04-24 1996-04-24 乾燥状態および湿潤状態における改善された構造的安定性を有する吸収性材料およびその製法

Publications (1)

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WO1997039780A1 true WO1997039780A1 (fr) 1997-10-30

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PCT/US1997/006603 WO1997039780A1 (fr) 1996-04-24 1997-04-24 Materiaux absorbants a stabilite de structure accrue a l'etat sec aussi bien qu'a l'etat humide et leurs procedes de production

Country Status (6)

Country Link
EP (1) EP1021214A1 (fr)
JP (1) JP3720118B2 (fr)
KR (1) KR20000010625A (fr)
AU (1) AU2805997A (fr)
CA (1) CA2251931C (fr)
WO (1) WO1997039780A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999238A1 (fr) * 1998-11-05 2000-05-10 Nippon Shokubai Co., Ltd. Résine absorbant l'eau et procédé pour sa fabrication
WO2003043670A1 (fr) * 2001-11-21 2003-05-30 Basf Aktiengesellschaft Hydrogels superabsorbants a revetement polyamine reticule
EP1364992A1 (fr) * 2001-01-26 2003-11-26 Nippon Shokubai Co., Ltd. Agent d'absorption d'eau et procede de production correspondant, et article absorbant l'eau
EP1430912A1 (fr) * 2002-08-26 2004-06-23 The Procter & Gamble Company Noyau absorbant comprenant un polymère superabsorbant destiné à des couches absorbantes ayant un èpaisseur rèduite et des performances de rétention et de captage de fluides amèliorées
US7247215B2 (en) 2004-06-30 2007-07-24 Kimberly-Clark Worldwide, Inc. Method of making absorbent articles having shaped absorbent cores on a substrate
US7396584B2 (en) 2001-11-21 2008-07-08 Basf Aktiengesellschaft Crosslinked polyamine coating on superabsorbent hydrogels
US7662745B2 (en) 2003-12-18 2010-02-16 Kimberly-Clark Corporation Stretchable absorbent composites having high permeability
US7772456B2 (en) 2004-06-30 2010-08-10 Kimberly-Clark Worldwide, Inc. Stretchable absorbent composite with low superaborbent shake-out

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WO2001089439A1 (fr) * 2000-05-23 2001-11-29 Toyo Eizai Kabushiki Kaisha Feuille ultra-mince absorbante, article absorbant jetable equipe de cette feuille et dispositif de production de celle-ci
JP3987348B2 (ja) * 2001-01-26 2007-10-10 株式会社日本触媒 吸水剤の製法
PL215419B1 (pl) 2003-02-10 2013-12-31 Nippon Catalytic Chem Ind Srodek pochlaniajacy wode
WO2004069293A1 (fr) 2003-02-10 2004-08-19 Nippon Shokubai Co., Ltd. Composition de resine absorbant l'eau et processus de production
TWI308570B (en) 2003-09-19 2009-04-11 Nippon Catalytic Chem Ind Water absorbent and producing method of same
DE602005009367D1 (de) 2004-05-07 2008-10-09 Nippon Catalytic Chem Ind Wasser-absorbierendes mittel und verfahren zu seiner herstellung
TWI353360B (en) 2005-04-07 2011-12-01 Nippon Catalytic Chem Ind Production process of polyacrylic acid (salt) wate
TWI394789B (zh) 2005-12-22 2013-05-01 Nippon Catalytic Chem Ind 吸水性樹脂組成物及其製造方法、吸收性物品
EP1837348B9 (fr) 2006-03-24 2020-01-08 Nippon Shokubai Co.,Ltd. Résine absorbant l'eau et son procédé de fabrication
EP2484439B1 (fr) 2009-09-29 2022-12-14 Nippon Shokubai Co., Ltd. Absorbant particulaire d'eau et son procédé de fabrication
JP5751998B2 (ja) 2010-09-29 2015-07-22 ユニ・チャーム株式会社 状態量分布測定装置、及び試料の状態量分布を測定する方法
JP6118181B2 (ja) * 2013-05-31 2017-04-19 ユニ・チャーム株式会社 吸収性物品及び吸収性物品の製造方法
WO2018181277A1 (fr) * 2017-03-28 2018-10-04 Ｓｄｐグローバル株式会社 Article absorbant

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US4842666A (en) * 1987-03-07 1989-06-27 H. B. Fuller Company Process for the permanent joining of stretchable threadlike or small ribbonlike elastic elements to a flat substrate, as well as use thereof for producing frilled sections of film or foil strip
EP0493011A2 (fr) * 1990-12-21 1992-07-01 Nippon Shokubai Co., Ltd. Matière absorbant l'eau et procédé de production; absorbant et procédé de production
EP0612533A1 (fr) * 1993-02-24 1994-08-31 SANYO CHEMICAL INDUSTRIES, Ltd. Composition et matériau absorbant l'eau
WO1995022356A1 (fr) * 1994-02-17 1995-08-24 The Procter & Gamble Company Matieres absorbantes ayant une propriete absorbante amelioree et leurs procedes de production
WO1995026209A1 (fr) * 1994-03-29 1995-10-05 The Procter & Gamble Company Articles absorbants pour fluides corporels presentant une bonne integrite au mouillage et renfermant des concentrations relativement elevees d'un polymere absorbant formant un hydrogel

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Publication number Priority date Publication date Assignee Title
US4842666A (en) * 1987-03-07 1989-06-27 H. B. Fuller Company Process for the permanent joining of stretchable threadlike or small ribbonlike elastic elements to a flat substrate, as well as use thereof for producing frilled sections of film or foil strip
US4842666B1 (fr) * 1987-03-07 1992-10-13 Fuller H B Co
EP0493011A2 (fr) * 1990-12-21 1992-07-01 Nippon Shokubai Co., Ltd. Matière absorbant l'eau et procédé de production; absorbant et procédé de production
EP0612533A1 (fr) * 1993-02-24 1994-08-31 SANYO CHEMICAL INDUSTRIES, Ltd. Composition et matériau absorbant l'eau
WO1995022356A1 (fr) * 1994-02-17 1995-08-24 The Procter & Gamble Company Matieres absorbantes ayant une propriete absorbante amelioree et leurs procedes de production
WO1995026209A1 (fr) * 1994-03-29 1995-10-05 The Procter & Gamble Company Articles absorbants pour fluides corporels presentant une bonne integrite au mouillage et renfermant des concentrations relativement elevees d'un polymere absorbant formant un hydrogel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999238A1 (fr) * 1998-11-05 2000-05-10 Nippon Shokubai Co., Ltd. Résine absorbant l'eau et procédé pour sa fabrication
US6297319B1 (en) 1998-11-05 2001-10-02 Nippon Shokubai Co., Ltd. Water-absorbing agent and production process therefor
US7098284B2 (en) 2001-01-26 2006-08-29 Nippon Shokubal Co., Ltd Water-absorbing agent and production process therefor, and water-absorbent structure
EP1364992A1 (fr) * 2001-01-26 2003-11-26 Nippon Shokubai Co., Ltd. Agent d'absorption d'eau et procede de production correspondant, et article absorbant l'eau
EP1364992A4 (fr) * 2001-01-26 2004-05-12 Nippon Catalytic Chem Ind Agent d'absorption d'eau et procede de production correspondant, et article absorbant l'eau
US7495056B2 (en) 2001-01-26 2009-02-24 Nippon Shokubai Co., Ltd. Water-absorbing agent and production process therefor, and water-absorbent structure
WO2003043670A1 (fr) * 2001-11-21 2003-05-30 Basf Aktiengesellschaft Hydrogels superabsorbants a revetement polyamine reticule
US7396584B2 (en) 2001-11-21 2008-07-08 Basf Aktiengesellschaft Crosslinked polyamine coating on superabsorbent hydrogels
EP1430912A1 (fr) * 2002-08-26 2004-06-23 The Procter & Gamble Company Noyau absorbant comprenant un polymère superabsorbant destiné à des couches absorbantes ayant un èpaisseur rèduite et des performances de rétention et de captage de fluides amèliorées
US7175910B2 (en) 2002-08-26 2007-02-13 The Procter & Gamble Company Absorbent cores for absorbent diapers having reduced thickness and improved liquid handling and retention performance and comprising a super absorbent polymer
US7662745B2 (en) 2003-12-18 2010-02-16 Kimberly-Clark Corporation Stretchable absorbent composites having high permeability
US7247215B2 (en) 2004-06-30 2007-07-24 Kimberly-Clark Worldwide, Inc. Method of making absorbent articles having shaped absorbent cores on a substrate
US7772456B2 (en) 2004-06-30 2010-08-10 Kimberly-Clark Worldwide, Inc. Stretchable absorbent composite with low superaborbent shake-out

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CA2251931C (fr) 2005-02-22
KR20000010625A (ko) 2000-02-25
AU2805997A (en) 1997-11-12
EP1021214A1 (fr) 2000-07-26
CA2251931A1 (fr) 1997-10-30
JP3720118B2 (ja) 2005-11-24
JPH09290000A (ja) 1997-11-11

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