WO2005059222A1 - Filaments files-lies multicomposes muni d'une ame en polymere superabsorbant pouvant etre traitee par fusion - Google Patents

Filaments files-lies multicomposes muni d'une ame en polymere superabsorbant pouvant etre traitee par fusion Download PDF

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Publication number
WO2005059222A1
WO2005059222A1 PCT/US2004/041911 US2004041911W WO2005059222A1 WO 2005059222 A1 WO2005059222 A1 WO 2005059222A1 US 2004041911 W US2004041911 W US 2004041911W WO 2005059222 A1 WO2005059222 A1 WO 2005059222A1
Authority
WO
WIPO (PCT)
Prior art keywords
superabsorbent polymer
polymer
nonwoven web
liquid
filaments
Prior art date
Application number
PCT/US2004/041911
Other languages
English (en)
Inventor
Patrick L. Crane
Original Assignee
Nordson Corporation
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 Nordson Corporation filed Critical Nordson Corporation
Publication of WO2005059222A1 publication Critical patent/WO2005059222A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/082—Melt spinning methods of mixed yarn
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y10T428/2931—Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2976—Longitudinally varying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • Y10T442/641—Sheath-core multicomponent strand or fiber material

Definitions

  • the invention relates generally to methods for manufacturing spunbond nonwoven webs and, more particularly, to methods for
  • spunbond nonwoven webs from multicomponent filaments incorporating a melt-processable superabsorbent polymer core.
  • thermoplastic polymers has been the subject of extensive development
  • webs consist of a sheet of overlapped and intermingled filaments or fibers of melt-processable thermoplastic polymers manufactured using, for
  • a spunbond process generally involves
  • thermoplastic polymers distributing one or more thermoplastic polymers in a spin pack for extrusion
  • the descending curtain of filaments is cooled by a cross-flow of cooling air
  • Spunbond filaments are generally lengthwise continuous and have average
  • the filaments are diameters in the range of about 10 to 20 microns.
  • Dispdsa ⁇ l' 'h'Vgienic articles commonly incorporate an
  • absorbent core containing a superabsorbent polymer (SAP) capable of absorbing several times its weight of aqueous body fluids while retaining
  • SAP superabsorbent polymer
  • SAP's contain water-
  • insoluble, cross-linked chain molecules that are capable of forming a hydrogel when hydrated by aqueous body fluids.
  • a high absorption capacity typically possesses low gel strength.
  • SAP's characterized by a low absorbent capacity are incapable of
  • the SAP To be useful in a disposable hygienic article, the SAP must
  • the absorbent core includes granules of SAP that are dispersed in a porous matrix of cellulose fibers.
  • the swelling of the SAP granules occurs in such a way that a very high
  • absorbent cores arises because the matrix of cellulose fibers is bulky, which conflicts with consumer demand for thin diapers. Yet another disadvantage
  • the invention provides a nonwoven web and a product formed
  • Each filament features a liquid-permeable or liquid-pervious sheath region and a core region encased within the sheath
  • the sheath region comprises a melt-processable thermoplastic
  • the core region comprises a melt-processable superabsorbent polymer capable of absorbing liquid that penetrates through said sheath
  • the nonwoven web may be used to fabricate products or articles, such as an absorbent core for a hygienic article.
  • the invention is directed to a method of
  • thermoplastic thermoplastic
  • thermoplastic polymer has a liquid-pervious sheath region including the thermoplastic polymer
  • the filaments are
  • the SAP permits the SAP to be characterized by lower gel strength and, therefore, a higher absorbency than in conventional absorbent cores for hygienic articles
  • filaments of the invention requires a reduced amount of SAP to achieve an
  • the absorbent core may be manufactured at a reduced cost.
  • Fig. 1 is a side view of a spunbonding apparatus for forming a
  • Fig. 2 is a perspective view of a portion of a multicomponent spunbond filament formed by the spunbonding apparatus of Fig. 1 ;
  • Fig. 3 is a cross-sectional view of the multicomponent spunbond filament of Fig. 2;
  • Fig. 4 is a cross-sectional view of a portion of a
  • FIGS. 5A and 5B are cross-sectional views of a portion of an
  • Fig. 6 is a cross-sectional view similar to Fig. 4 of a portion of a multicomponent spunbond filament in accordance with an alternative
  • Fig. 7 " is a " perspective view of a hygienic article having an
  • absorbent core including multicomponent spunbond filaments in accordance with the principles of the invention.
  • the invention is directed to methods for boosting the
  • SAP superabsorbent polymers
  • thermoplastic polymer sheath thermoplastic polymer sheath. Although the filaments will be described
  • a spunbonding apparatus 10 is equipped with a screw extruder 1 2 that converts a solid melt-processable
  • Each set of metering pumps 1 6, 1 8 pumps metered amounts
  • spin pack 20 which contains flow passageways that cooperate for combining the p ⁇ fymers.
  • '" ''Spin packs are familiar to persons of ordinary skill
  • spin pack 20 includes flow passageways arranged to separately direct the
  • spinneret 22 includes spinning orifices (not shown) arranged in rows from
  • orifices in spinneret 22 can be selected to accommodate the cross-section
  • extruded filaments 24 such as round, oval, trilobal,
  • the filaments 24 are drawn into a filament-drawing device 26 that directs high velocity sheets of process air in a downwardly direction generally parallel to the length of the filaments 24. Because the filaments
  • the filaments 24 discharged from filament-drawing device 26 are the filaments 24 discharged from filament-drawing device 26.
  • a formaminous or porous collector 28 such as a ' ' moving screen belt " . ' Th ' e ' Tilaments 24 deposit in a substantially random manner as substantially flat loops on the collector 28 to collectively form a nonwoven web 30.
  • the collection device 28 moves in a machine direction, represented by the arrow labeled MD, parallel to the length of the 5 nonwoven web 30.
  • the width of the nonwoven web 30 deposited on collector 28 is substantially equal to the width of the curtain of filaments 24.
  • An air management system 32 positioned below the collector 28 supplies a vacuum that is transferred through the collector 28 to attract
  • the air management system 32 disposes of the high-velocity process air discharged from the filament drawing device 26 so that filament laydown is relatively undisturbed.
  • Exemplary air management systems 32 are disclosed in U.S. Patent Number 6,499,982, the disclosure of which is hereby incorporated by reference
  • Additional spunbonding apparatus not shown but similar to spunbonding apparatus 10, and meltblowing apparatus (not shown) may be provided downstream or upstream of spunbonding apparatus 10 for depositing one or more additional spunbond and/or meltblown nonwoven 0 webs of either monocomponent or multicomponent filaments either as a substrate for receiving nonwoven web 30 or onto nonwoven web 30.
  • SMS spunbond/meltblown/spunbond
  • filaments 24 are multicomponent filaments 5 including a sheath 34 of a melt-processable thermoplastic polymer concentrically surrounding a core 36 formed from a melt-processable SAP, including but not limited to acrylate-based materials such as polyacrylate or, more specifically, sodium polyacrylate which is a sodium salt of polyacrylic acid.
  • the thermoplastic polymer forming sheath 34 may be selected from
  • polystyrene resins such as polyethylene, polypropylene, nylons, polyamides, polyesters, polyvinyl acetate, polyvinyl chloride, polyvinyl alcohol, and cellulose acetate.
  • the core 36 may be concentrically arranged
  • the sheath 34 may be eccentric or offset from the sheath axial centerline.
  • the core 36 may also be distributed in multiple isolated cores within sheath 34 in an islands-in- the-sea configuration.
  • the sheath 34 is pervious or permeable to liquids or hydrophilic
  • the sheath 34 provides a mechanical support that strengthens the core 36 after an amount of a liquid is absorbed to form a hydrogel.
  • a low gel strength and high absorbency SAP may be used in the core 36 of filament 24 for boosting the total storage capacity
  • the SAP in the core 36 may exhibit an absorbency exceeding about 50 grams of saline per gram of SAP. Absorbency is a
  • Gel strength indicates the tendency of the hydrogel, once formed from the SAP, to deform or flow under an applied
  • the recipe or chemistry of the SAP may be altered to
  • the absorbency may be used to regulate the absorption rate of the SAP core 36.
  • the filaments 24 may contain at least about 50% by weight of SAP.
  • core 36 forms a hydrogel that expands volumetrically after absorbing liquid.
  • filament 24 will expand in a radial dimension after liquid
  • the SAP in core 36 retains the absorbed liquids under
  • a sheath 38 of filament 24 may be formed under
  • melt-spinning conditions such that an outer surface includes multiple
  • pathways 40 are direct passageways penetrating the sheath 38 and may be present as fractures in the sheath 38. Alternatively, the pathways 40 may
  • liquids are able to more readily permeate or pervade the sheath 38 with
  • the pathways 40 are introduced into the sheath 38 by various agents
  • the pathways 40 may be introduced in sheath 38 by
  • thermoplastic polymer may be formed by mixing the thermoplastic polymer with a diluent or plasticizer, quenching in a liquid medium to induce phase separation, and washing away the diluent to leave behind an interconnected porous
  • Pathways 40 may also be formed in sheath 38 by introducing a
  • filaments 24 are formed.
  • Another technique for forming pathways 40 in sheath 38 is to add a filler material, such as a concentration of particulate
  • filler like calcium carbonate, capable of initiating pathway formation to the
  • pathways 40 may be introduced into the
  • polymer forming sheath 38 by introduction of an additive such as polyethylene glycol as disclosed in U.S. Patent No. 6,623,853, the
  • filament 24 may be
  • Adjacent portions 42 are separated by one of
  • the p ⁇ r ⁇ ofis""4'2' may be arranged with regular axial spacing or
  • the arrangement consisting of portions 42 of SAP separated by voids 46 may be formed by controlling the relative volumetric flow rates of sheath polymer and SAP to the spin pack,
  • filament 24 may include a core 48
  • SAP matrix 50 constituted by an SAP matrix 50 containing SAP granules 52 and/or SAP
  • SAP matrix 50 is to increase the gel strength at the expense of a slight reduction in absorbency.
  • SAP granules 52 or SAP agglomerates 54 are added
  • top sheet 60 generally includes a top sheet 60, a back sheet 62, an absorbent core 64
  • the top sheet 60 which is intended to be placed adjacent to the
  • aqueous body fluids may readily penetrate through its thickness to the
  • Fluid acquisition and transfer layer 66 distributes
  • top sheet 60 aqueous body fluids transferred from top sheet 60 to the underlying absorbent core 64.
  • the nonporous, hydrophobic back sheet 62 prevents aqueous body fluid's" ausWbed in the absorbent core 64 from wetting the
  • Fastener elements 68 on the back sheet 62 cooperate with complementary fastener
  • the absorbent core 64 includes filaments 24 in accordance
  • the absorbent core 64 may be formed in its entirety from filaments 24, from a commingled mixture of filaments 24 and other
  • non-absorbent spunbond filaments or from a multi-ply laminate structure in which nonwoven web 30 forms one layer.
  • absorbent core 64 may be optimized for the intended use of the hygienic
  • the hygienic article 58 After a limited number of soilings by aqueous body fluids is absorbed by the absorbent core 64, the hygienic article 58 is intended to be
  • hygienic article 58 may be any material that can be used to store and retrieve data.
  • hygienic article 58 may be a diaper, a
  • the multicomponent filaments 24 of the invention may be used

Abstract

L'invention concerne des filaments filés-liés multicomposés (24), qui comprennent une âme (36) en polymère superabsorbant entourée d'une gaine de polymère thermoplastique (34) perméable aux liquides. Le polymère superabsorbant présent dans l'âme (36) des filaments absorbe les liquides qui pénètrent dans l'âme (36) par les voies de cheminement des liquides délimitées dans la gaine (34) des filaments. Les filaments filés-liés (21) conviennent pour la formation d'une âme absorbante (64) d'un article destiné à absorber les liquides, tel qu'un article hygiénique jetable (58) utilisé pour absorber des liquides organiques.
PCT/US2004/041911 2003-12-15 2004-12-14 Filaments files-lies multicomposes muni d'une ame en polymere superabsorbant pouvant etre traitee par fusion WO2005059222A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/736,281 2003-12-15
US10/736,281 US20050130540A1 (en) 2003-12-15 2003-12-15 Multicomponent spunbond filaments having a melt-processable superabsorbent polymer core

Publications (1)

Publication Number Publication Date
WO2005059222A1 true WO2005059222A1 (fr) 2005-06-30

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Family Applications (1)

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PCT/US2004/041911 WO2005059222A1 (fr) 2003-12-15 2004-12-14 Filaments files-lies multicomposes muni d'une ame en polymere superabsorbant pouvant etre traitee par fusion

Country Status (2)

Country Link
US (1) US20050130540A1 (fr)
WO (1) WO2005059222A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2793789A1 (fr) * 2011-12-23 2014-10-29 Sca Hygiene Products AB Matière en feuille fibreuse à deux ou plusieurs plis contenant une matière superabsorbante et son procédé de fabrication

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WO2006011625A1 (fr) * 2004-07-30 2006-02-02 Mitsubishi Chemical Corporation Corps composite absorbant un liquide, son procede de fabrication, article absorbant un liquide et buse
CN101563114B (zh) 2006-12-22 2013-01-09 Sca卫生用品公司 双组分超级吸收纤维
US9675501B2 (en) * 2011-12-19 2017-06-13 Kimberly-Clark Worldwide, Inc. Absorbent article including superabsorbent yarn
WO2013130547A1 (fr) * 2012-03-01 2013-09-06 Synthes Usa, Llc Suture chirurgicale à noyau mou
US10369246B2 (en) 2013-06-14 2019-08-06 Krp U.S., Llc Absorbent articles having pockets and related methods therefor
JP6802155B2 (ja) * 2014-10-06 2020-12-16 ケーシーアイ ライセンシング インコーポレイテッド 負圧治療用多機能ドレッシング構造

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GB896955A (en) * 1959-03-16 1962-05-23 Du Pont Composite synthetic textile fibres
EP0892093A1 (fr) * 1995-10-30 1999-01-20 Uni-Charm Company Limited Fibre de cellulose retenant l'eau, son procede de fabrication et feuille retenant l'eau comprenant des fibres de cellulose a capacite de retention d'eau elevee
US6342298B1 (en) * 1997-11-19 2002-01-29 Basf Aktiengesellschaft Multicomponent superabsorbent fibers
WO2002007791A2 (fr) * 2000-07-24 2002-01-31 Dow Global Technologies Inc. Compositions de melange de polymere thermoplastique superabsorbant et leur preparation

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GB896955A (en) * 1959-03-16 1962-05-23 Du Pont Composite synthetic textile fibres
EP0892093A1 (fr) * 1995-10-30 1999-01-20 Uni-Charm Company Limited Fibre de cellulose retenant l'eau, son procede de fabrication et feuille retenant l'eau comprenant des fibres de cellulose a capacite de retention d'eau elevee
US6342298B1 (en) * 1997-11-19 2002-01-29 Basf Aktiengesellschaft Multicomponent superabsorbent fibers
WO2002007791A2 (fr) * 2000-07-24 2002-01-31 Dow Global Technologies Inc. Compositions de melange de polymere thermoplastique superabsorbant et leur preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2793789A1 (fr) * 2011-12-23 2014-10-29 Sca Hygiene Products AB Matière en feuille fibreuse à deux ou plusieurs plis contenant une matière superabsorbante et son procédé de fabrication

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