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WO2018184051A1 - Matériau non tissé conçu pour être utilisé dans des structures de cœurs absorbants ayant des capacités d'acquisition/distribution intrinsèques - Google Patents

Matériau non tissé conçu pour être utilisé dans des structures de cœurs absorbants ayant des capacités d'acquisition/distribution intrinsèques Download PDF

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Publication number
WO2018184051A1
WO2018184051A1 PCT/AT2017/000032 AT2017000032W WO2018184051A1 WO 2018184051 A1 WO2018184051 A1 WO 2018184051A1 AT 2017000032 W AT2017000032 W AT 2017000032W WO 2018184051 A1 WO2018184051 A1 WO 2018184051A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent core
core structure
filaments
nonwoven
superabsorbent polymer
Prior art date
Application number
PCT/AT2017/000032
Other languages
English (en)
Inventor
Tom Carlyle
Mirko Einzmann
Gisela Goldhalm
Malcolm John Hayhurst
Katharina Mayer
Ibrahim SAGERER-FORIC
Original Assignee
Lenzing Ag
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 Lenzing Ag filed Critical Lenzing Ag
Priority to PCT/AT2017/000032 priority Critical patent/WO2018184051A1/fr
Publication of WO2018184051A1 publication Critical patent/WO2018184051A1/fr

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Classifications

    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B32B7/09—Interconnection of layers by mechanical means by stitching, needling or sewing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • 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
    • D04H3/013—Regenerated cellulose series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/554—Wear resistance
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    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/716—Degradable
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/70—Other properties
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    • B32B2307/748—Releasability
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    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Definitions

  • This invention relates to a thin, flexible absorbent core structure with intrinsic acquisition and distribution capabilities, and, more particularly, to an absorbent core composed of an essentially pure cellulose nonwoven web formed from essentially continuous filaments and multibonded by merged filaments, hydrogen bonding and physical intermingling of filaments, combined with superabsorbent polymers.
  • This absorbent core is distinguished by its lack of fluff pulp as a component.
  • This absorbent core is thin, flexible, absorbent with excellent liquid retention; the nonwoven web used is capable of acquiring and distributing the liquid to the absorbent polymer, as well as holding the absorbent polymer in position both dry and wet; used in a hygiene or personal care product, for example a baby diaper or feminine hygiene pad, this absorbent core reduces product weight, thickness, and shipping costs.
  • essentially pure cellulose shall address the fact that cellulosic moulded bodies, e.g. made according to the lyocell process, always contain a small amount of polymers other than cellulose, namely hemicellulose. This does not influence in any way the suitability for the use according to this invention.
  • U.S. 8,260,533 teaches the use of thermoplastic adhesives, printed onto a nonwoven in a desired pattern, and adhering the superabsorbent polymer onto this pattern of adhesive.
  • This pattern places the superabsorbent polymer powder in desired locations and keeps the powder separated so that liquid can reach most of the powder. Additionally, both when dry or wet and swollen, the powder is held in place.
  • This core usually requires a separate special pulp containing acquisition/distribution layer.
  • WO 2012/052172 teaches the use ultrasonic bonding of two layers of nonwovens, forming pockets for the superabsorbent polymer powder to reside. These pockets hold the superabsorbent polymer powder, both when dry and when wet and swollen. These pockets allow enough space for the superabsorbent polymer powder to absorb and swell freely. This core usually requires a through air bonded nonwoven acquisition/distribution layer.
  • U.S. 2014/291987 teaches the use of a nonwoven layer with pre-formed pockets, into which the superabsorbent polymer powder is dispensed, then covered with a standard nonwoven sheet; adhesives are used to bond the cover nonwoven to the pre-formed nonwoven.
  • Blends of fluff pulp with superabsorbent polymer powder as described in U.S. 5,147,343 and U.S. 5,599,335, are low cost and absorbent, but do not contain the superabsorbent polymer powder, either dry or wet, and do not easily place the superabsorbent polymer powder in desired locations, are not thin nor lightweight, and do require a separate acquisition/distribution layer.
  • ultrasonic bonding of such structures is a complex process, is slow and requires select nonwovens able to be ultrasonically bonded.
  • Most polymers able to be ultrasonically bonded are thermoplastic and synthetic. These can interfere with absorbency of liquids.
  • absorbent products such as those used in baby diapers, feminine hygiene pads and adult incontinence products, are usually composed of a liquid permeable topsheet, an acquisition/distribution layer, an absorbent core (including a sheet material as a "core wrap") and a liquid impermeable backsheet.
  • Most current absorbent cores where high absorbency is needed, are composed of fluff pulp and superabsorbent polymer.
  • Superabsorbent polymer absorbs and holds many times its own weight in liquid, but it is slower to absorb this liquid than, for example, fluff pulp.
  • Fluff pulp absorbs less fluid, but does so rapidly; unfortunately, fluff pulp releases fluids easily, especially under pressure, weight or load. Additionally, when superabsorbent absorbs liquids, it swells and forms a gel. If
  • superabsorbent polymer is used in high concentrations, it forms a mass of swollen particles, which can restrict movement of liquid to unused
  • An acquisition/distribution layer has a top surface with a function to rapidly acquire or absorb liquids and rapidly move them from the surface to the distribution layer.
  • the distribution layer's purpose is to move liquid both to the absorbent core as well as in the x-y direction along the surface of the absorbent core. This maximizes usage of the absorbent surface area.
  • the entire fluff/superabsorbent polymer mixture is wrapped in a sheet material, either tissue or nonwoven.
  • Tissue has very low strength especially when wet, but is low cost.
  • Nonwovens have higher wet strength, but are more costly.
  • the hygiene or personal care article be as thin and lightweight as possible, while still meeting performance requirements. Additionally, it is desired that such a product be low cost and without excessive complicated process issues.
  • This material is designed to be a sustainable and cost effective nonwoven with good absorbency. It is clear that an essentially pure cellulosic material has better absorbent capacity and superior liquid management properties (liquid uptake, good spreadability and good wicking) than synthetic polymers such as polypropylene and polyester, which are typically used for the majority of hygiene components.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

La présente invention concerne une structure de cœur absorbant comprenant : (a) une nappe de non-tissé en cellulose essentiellement pure formée à partir de filaments essentiellement continus et multiliés par des filaments fusionnés, des liaisons hydrogène et/ou un enchevêtrement physique de filaments, et (b) combinée à un polymère superabsorbant, pour une utilisation dans des produits d'hygiène. Le produit est mince, léger et flexible et a une résistance mécanique à l'état humide et sec élevée, une excellente capacité d'absorption et de rétention, et maintient le polymère superabsorbant à l'emplacement pour lequel il a éé conçu, qu'il soit sec et/ou humide et gonflé. L'invention concerne en outre l'utilisation de ladite structure de cœur absorbant pour la fabrication d'un produit d'hygiène. Un produit d'hygiène caractérisé en ce qu'il contient la structure de cœur absorbant selon l'invention, l'utilisation de ladite structure de cœur combinée à un autre matériau non tissé pour obtenir un composite non tissé pour des applications d'hygiène et l'utilisation de ladite structure de cœur absorbant pour introduire des fonctions de couche d'acquisition/distribution, d'enveloppe de cœur et de cœur absorbant dans un seul et même produit et/ou structure d'hygiène sont en outre décrits.
PCT/AT2017/000032 2017-04-03 2017-04-03 Matériau non tissé conçu pour être utilisé dans des structures de cœurs absorbants ayant des capacités d'acquisition/distribution intrinsèques WO2018184051A1 (fr)

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PCT/AT2017/000032 WO2018184051A1 (fr) 2017-04-03 2017-04-03 Matériau non tissé conçu pour être utilisé dans des structures de cœurs absorbants ayant des capacités d'acquisition/distribution intrinsèques

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PCT/AT2017/000032 WO2018184051A1 (fr) 2017-04-03 2017-04-03 Matériau non tissé conçu pour être utilisé dans des structures de cœurs absorbants ayant des capacités d'acquisition/distribution intrinsèques

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Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147343A (en) 1988-04-21 1992-09-15 Kimberly-Clark Corporation Absorbent products containing hydrogels with ability to swell against pressure
US5599335A (en) 1994-03-29 1997-02-04 The Procter & Gamble Company Absorbent members for body fluids having good wet integrity and relatively high concentrations of hydrogel-forming absorbent polymer
WO1998007911A1 (fr) 1996-08-23 1998-02-26 Weyerhaeuser Company Fibres lyocellulaires et procede de preparation
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WO2007124521A1 (fr) 2006-04-28 2007-11-08 Lenzing Aktiengesellschaft Produits hydro-enchevêtrés comprenant des fibres de cellulose
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EP2212456B1 (fr) 2007-11-07 2015-07-22 Lenzing Aktiengesellschaft Procédé de production d'un produit hydrolié comprenant des fibres de cellulose
US8012565B2 (en) 2008-03-31 2011-09-06 Weyerhaeuser Nr Company Lyocell nonwoven webs
US8263506B2 (en) 2008-06-30 2012-09-11 Weyerhaeuser Nr Company Nonwoven lyocell fiber webs for filtration
US8191214B2 (en) 2008-12-31 2012-06-05 Weyerhaeuser Nr Company Method for making lyocell web product
US8318318B2 (en) 2008-12-31 2012-11-27 Weyerhaeuser Nr Company Lyocell web product
US20130012899A1 (en) 2010-03-28 2013-01-10 Evonik Industries Ag Highly flexible absorbent laminate and method for the production thereof
WO2012052172A1 (fr) 2010-10-20 2012-04-26 Vynka Bvba Structure absorbante respectueuse de l'environnement
US20140052089A1 (en) 2011-04-28 2014-02-20 Evonik Industries Ag Elastic absorbent sanitary article for absorbing bodily fluids
WO2013153235A1 (fr) 2012-04-13 2013-10-17 Libeltex Structures absorbantes unitaires comprenant un noyau absorbant et/ou une couche d'acquisition et de dispersion pour articles absorbants
WO2014001487A1 (fr) 2012-06-29 2014-01-03 Concepts For Success (C4S) E.K. Structure absorbante collée par fusion à chaud comprenant des fibres et des particules superabsorbantes et procédé de fabrication d'une telle structure
WO2014009506A1 (fr) 2012-07-13 2014-01-16 Glatfelter Falkenhagen Gmbh Bande intercalaire absorbante douce comprenant des concentrations élevées de matériau superabsorbant, des fibres cellulosiques et un liant appliqué en surface
US20140163506A1 (en) * 2012-12-10 2014-06-12 The Procter & Gamble Company Absorbent Articles with Channels and/or Pockets
US20140291987A1 (en) 2013-02-25 2014-10-02 Pratt & Whitney Canada Corp. Engine architecture using electric machine

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