Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
  • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
  • D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
  • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
  • A61F2013/51059—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers being sprayed with chemicals
  • A61F2013/51066—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers being sprayed with chemicals for rendering the surface hydrophilic
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
  • Y10T428/31609—Particulate metal or metal compound-containing
  • Y10T428/31612—As silicone, silane or siloxane
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31652—Of asbestos
  • Y10T428/31663—As siloxane, silicone or silane
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers
  • Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
• • 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.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2139—Coating or impregnation specified as porous or permeable to a specific substance [e.g., water vapor, air, etc.]

Definitions

• the invention relates to a product comprising a fibrous support and a hydrophilic and/or permeabilizing coating, to the process for preparing it and to its use, for example, in or for absorbent disposable products, for example in diapers.
• the polypropylene nonwoven may be the layer at least partially surrounding an absorbent compound, and in contact with the skin.
• the nonwoven durably hydrophilic and/or permeable so as not to repel urine, and so that the hydrophilicity and/or the permeability is conserved after at least one contact with urine.
• it is sought to make provision such that the surface tension of urine is not greatly lowered after it comes into contact with a compound that modifies the hydrophilicity and/or the permeability of the nonwoven.
• the invention proposes a product comprising a fibrous support and a hydrophilic and/or permeabilizing coating bonded over at least part of an area of the support, characterized in that the coating comprises:
• the invention also relates to disposable absorbent products, for example baby diapers, comprising as one component thereof, the product as mentioned above or obtained using the process described below.
• the invention also relates to the use of the product described above or obtained using the process below, in disposable absorbent products, or for disposable absorbent products, for example in baby diapers.
• the product may also be used in or for wipes, for household care or for skincare, floor mops, filters, and technical papers or printing papers.
• the invention also relates to a process for preparing products comprising a support and a coating on the support, which can allow the production of a product as mentioned above.
• the process is described below.
• hydrophobic polymer means a polymer that lacks water affinity.
• a hydrophobic polymer is a polymer for which one surface has a contact angle (with water) of at least 70°.
• durable bonding means that a property in terms of bonding (cohesion), hydrophilicity or permeability is at least partly maintained after soaking the product twice for a few seconds (for example 5 seconds) in water or in a sodium chloride solution.
• a property is said to be partly maintained if at least 50%, preferably 60%, preferably at least 70%, preferably at least 80%, preferably at least 90% and preferably at least 95% of the value of a measurement attributed to said property is maintained after soaking, relative to said value before soaking.
• polymer means any crosslinked or noncrosslinked macromolecular compound.
• polymer especially covers the term “resin”.
• the product according to the invention comprises a fibrous support and a hydrophilic and/or permeabilizing coating.
• the fibrous support may be a yarn, a fiber or a filament, a woven or nonwoven textile surface, or a paper.
• the yarns, fibers or filaments may be yarns, fibers or filaments per se, not assembled into a textile surface.
• the textile surfaces may be woven or knitted surfaces, flocked textile surfaces or surfaces assembled as carpets (tufted surfaces) or nonwoven surfaces.
• the fibrous support for example a nonwoven surface, may comprise, for example, a synthetic or natural polymer, or a polymer derived from a natural polymer, for example a thermoplastic or cellulose-based polymer or a cellulose derivative, in the form of yarns, fibers or filaments.
• the nonwoven surfaces include surfaces made by entangling preformed fibers, and optionally subsequent calendering, hot-bonding, needlepunching, etc. treatments.
• the nonwoven surfaces also include nonwoven surfaces obtained using high productivity processes, generally with heat, such as “meltblown” or “spunbound” processes. All these nonwoven surfaces and all these preparation processes are known to those skilled in the art.
• the polymer of the support is advantageously a hydrophobic polymer.
• hydrophobic polymers that may be mentioned include:
• polyamide for example polyamide 6 or 66, or cellulose, or cellulose derivatives.
• the polymer of the support may contain more or less large amounts of additives, for instance pigments, delustering agents, antioxidants, stabilizers (especially heat stabilizers, light stabilizers or UV stabilizers), paints, free-radical scavengers, catalyst residues, etc.
• additives for instance pigments, delustering agents, antioxidants, stabilizers (especially heat stabilizers, light stabilizers or UV stabilizers), paints, free-radical scavengers, catalyst residues, etc.
• additives for instance pigments, delustering agents, antioxidants, stabilizers (especially heat stabilizers, light stabilizers or UV stabilizers), paints, free-radical scavengers, catalyst residues, etc.
• Supports that may be used are sold especially by Feudenberg (brand name Vilmed®) or BBA Nonwovens (brand name Celestra® or Veraspun®).
• the typical specific weights of these voile fabrics are, for example, from 10 to 20 g/m 2 .
• the coating is bonded to the support over at least part of an area of the support.
• the coating comprises:
• the film may be, for example, a polymer film.
• the film may be obtained from at least one film-forming agent (film-forming agent alone, or combination of film-forming agents), for example a film-forming agent that is polymeric (polymer formed before application) or nonpolymeric (but capable of forming a polymer or a crosslinked resin after application). Details are given later.
• the compatibilizers may be agents for promoting the bonding of the film to the support, or agents for promoting the attachment of film-forming agents to the support.
• the use and choice of such agents may depend on the nature of the support, the coating process, and the nature of the film or of the film-forming agents. Such agents are known to those skilled in the art.
• the wetting agents may be agents for promoting the bringing together of film-forming agents or of a vector comprising film-forming agents with the support.
• the use and choice of such agents may depend on the nature of the support, the coating process, and the nature of the film or of the film-forming agents. Such agents are known to those skilled in the art.
• the hydrophilic and/or permeabilizing agent may be an organic or mineral agent. It may be, for example, a mineral hydrophilic agent.
• the agent may be a dispersion of mineral particles included in the film, optionally in an upper part of the film, not bonded to the support (peripheral part opposite the interface between the film and the support).
• the agent may be a layer of mineral material covering at least part of the film.
• the hydrophilic and/or permeabilizing agent may be a hydrophilic polymer, advantageously a polyether silicone.
• the polyether silicone has the formula (I) below: the end groups of the ethylene oxides (OE) or propylene oxides (OP) being groups OR,
• OE means —O—CH2—CH2—
• OP means —O—CH2—CH2—CH2—
• R represents a hydrogen atom or a linear or branched alkyl radical containing from 1 to 22 carbon atoms and preferably from 1 to 4 carbon atoms, or an acetyl group,
• x is a number between 5 and 50
• y is a number between 3 and 10
• e is a number between 10 and 30,
• p is a number between 0 and 10
• x/y is less than 10 and preferably less than or equal to 8
• e+p is less than 30 and preferably less than or equal to 20,
• e/p is greater than 1 and preferably greater than or equal to 4, and
• x+y is less than 60 and preferably less than 40.
• Polyether silicones that may be used are especially sold by Rhodia under the name Rhodorsil SP3301, or by Degussa under the name Tegopren 5843, 5851, 5857, 8404, 8450 or 8462.
• the film may be a polymer in the form of a film.
• the film may be obtained from at least one polymeric or nonpolymeric film-forming agent. It may be a film obtained from an aqueous dispersion of water-insoluble film-forming polymer (latex), for example a natural or synthetic latex.
• latex water-insoluble film-forming polymer
• the preferred water-insoluble film-forming polymers may be obtained by polymerization of monomers chosen from:
• These monomers may be copolymerized with each other or with other ethylenically unsaturated monomers, to form homopolymers, copolymers or terpolymers.
• At least two copolymerizable monomers of different nature may especially be chosen to obtain a terpolymer.
• An example that may be mentioned is a terpolymer of acetate/versatate/dibutyl maleate type.
• the polymerization of the latex may be performed in a manner known per se in an aqueous emulsion of the polymerizable monomers in the presence of at least one radical initiator and preferably a transfer agent, for example of the mercaptan type, with a concentration of monomers in the reaction medium generally of between 20% and 60% by weight.
• the polymerization may be performed in continuous, batch or semicontinuous mode with introduction of part of the monomers continuously and may be of the “seeded” or “incremental” type according to any variant known for obtaining particles of homogeneous and heterogeneous structure.
• Acrylic polymers are preferably used for the film, i.e. polymers comprising polymers based on monomers of acrylic type (such as alkyl acrylates and methacrylates whose alkyl group contains from 1 to 10 carbon atoms, for example methyl, ethyl, n-butyl or 2-ethylhexyl acrylates and methacrylates). These acrylic polymers may also comprise other monomers: these may be, for example, styrene-acrylic varnishes. However, in the intended applications, the “pure” acrylic coating compositions, i.e. compositions based on monomers of acrylic type alone, are even more preferred.
• acrylic type such as alkyl acrylates and methacrylates whose alkyl group contains from 1 to 10 carbon atoms, for example methyl, ethyl, n-butyl or 2-ethylhexyl acrylates and methacrylates.
• acrylic polymers may also comprise other monomers: these may be, for example,
• the lattices used may be chosen such that their glass transition temperature (TG) is between 10° C. and 60° C. and preferably between 20° C. and 40° C.
• TG glass transition temperature
• the sizes of the polymer particles in aqueous dispersion constituting the lattices according to the invention may be between 300 nanometers and 20 nanometers. These particle sizes are measured by laser granulometry or by scanning microscopy after cryofracture of the sample.
• the aqueous dispersions of film-forming polymers may include plasticizers, in order to reduce the film-forming temperature (TMMF) when the process of the invention is performed under very cold temperature conditions, i.e. temperatures below 0° C.
• TMMF film-forming temperature
• the hydrophilic and/or permeabilizing agent is included in the film.
• a coating composition comprising at least one film-forming agent and the hydrophilic and/or permeabilizing agent, in a liquid vector.
• the hydrophilic agent it is thought that it may be advantageous for the hydrophilic agent to migrate to the periphery of the coating (or of the film) opposite the surface of the support to which the coating is bound. It is thought that such a migration might be induced, for example, by entrainment during the removal of the vector.
• the hydrophilic agent is a layer of material covering at least part of the film.
• the coating, the hydrophilic and/or permeabilizing agent, the film, at least part of the surface of the support, optionally other ingredients of the coating, the amounts thereof and the preparation processes are preferably chosen such that the bonding between the support and the film is durable in the presence of an aqueous solution at a temperature of between 10° C. and 50° C. This is referred to as durable coating, durable treatment, durable bonding, durable hydrophilization, resistance to leaching, or durable permeabilization.
• the product is advantageously permeable to water (in particular for a nonwoven support made of polypropylene and/or cellulose or derivative, for products (coated supports) used in disposable absorbent products, for instance baby diapers, feminine hygiene products or comfort products for adult incontinence.
• the support, the coating and their bonding are preferably such that the surface tension of an aqueous solution is not lowered by more than 50%, preferably not more than 40%, preferably not more than 30%, preferably not more than 20% and preferably 10%, after placing the product in contact with the aqueous solution.
• the coating is obtained by applying a liquid composition, especially comprising ingredients of the coating mentioned above, and a liquid vector (to be removed thereafter to form a film).
• the process is performed in several steps, by forming a film, preferably not comprising any hydrophilic and/or permeabilizing agent, and then by forming a layer of material covering at least part of the film.
• the liquid vector may be an aqueous or nonaqueous vector (alcoholic, hydroxyalcoholic or other solvent), the polymer being in the form of a solution, dispersion or emulsion in this vector.
• the film-forming polymer in a liquid vector is a polymer dissolved in an aqueous vector or in a solvent, or an aqueous dispersion of film-forming polymer (latex).
• the nature of the vector, its amount, and any possible dilution may be determined by a person skilled in the art.
• the product preferably has a weight ratio between the film and the hydrophilic and/or permeabilizing agent of between 99.9/0.1 and 90/10 and preferably between 97/3 and 95/5.
• the product may have a coating (dry matter)/support weight ratio of between 1% and 25%.
• the film can provide sufficiently strong bonding via the simple effect of coating fibers of the fibrous support.
• the presence of the film on the support may contribute toward an improvement in its mechanical properties.
• the products whose support is a nonwoven surface for example comprising polypropylene and/or cellulose fibers, may have higher mechanical properties. It is also possible to reduce the density (g/m 2 ) of the nonwoven while at the same time maintaining satisfactory mechanical properties. For example, nonwovens with a density of less than or equal to 17 g/m 2 or even less than or equal to 15 g/m 2 may be used.
• a practical process for preparing the product according to the invention may comprise the following steps:
• the film-forming agent used is a film-forming polymer, it may be a polymer dissolved in an aqueous vector or in a solvent, or may be an aqueous dispersion of film-forming polymer (latex).
• Step a) is an optional pretreatment step.
• Such a step may be intended to improve the affinity of the composition for at least the part of the support intended to be coated, and/or to improve the bonding between the coating and at least the treated part of the surface of the support.
• This treatment may be a dry-route or wet-route treatment. Examples that are mentioned among the dry-route treatments include treatments of corona, UV irradiation or plasma type. Such surface treatments are known to those skilled in the art. Examples of wet-route treatments include treatments of chemical type, for example using chemical compounds that modify the chemical functions present at the surface of the support (oxidations, degradations, reductions, etc.).
• Step b1a) or b2a) may be performed via any process for applying a liquid composition to a support. Any impregnation, covering or coating technique may be used. The process may be performed, for example, by
• Step b1b) or b2c) of removal may be performed via simple evaporation, optionally accelerated by heating, or any other means (infrared, etc.).
• the support is in motion during the implementation of step b).
• the support is, for example, in traveling motion of a surface:
• the support is a nonwoven surface, for example a nonwoven surface based on polypropylene or polyethylene terephthalate.
• a disposable absorbent product preferably a baby diaper (nappy), a feminine hygiene product, or a comfort product for adult incontinence.
• Such products are known to those skilled in the art. They generally comprise an absorbent compound, in an envelope comprising a permeable inner layer intended to come into contact with the user's skin, and an outer layer, which is generally impermeable.
• the product according to the invention is preferably used as inner layer, in the construction of disposable absorbent products. It is pointed out that the disposable absorbent product may comprise other components, known to those skilled in the art, for example elastics, distribution of voile fabrics, etc.
• the product may be in the form of a semifinished intermediate product used for the construction or assembly of a disposable absorbent product, preferably a baby diaper (nappy), a feminine hygiene product, or a comfort product for adult incontinence. It may then be in the form of rolls, and may be marketed by manufacturers of nonwoven surfaces. The treatment is then preferably performed downstream of the manufacture of nonwoven surfaces.
• the product may also be in the form of part of a disposable absorbent product, preferably a baby diaper (nappy), a feminine hygiene product, or a comfort product for adult incontinence, and may be marketed by manufacturers of finished consumer products.
• a disposable absorbent product preferably a baby diaper (nappy), a feminine hygiene product, or a comfort product for adult incontinence
• the treatment will have been performed as mentioned above, or in continuous mode upstream of the manufacture of the finished articles (assembly or construction of diapers), from rolls of untreated nonwoven surfaces, or in integrated processes of manufacture of surfaces, treatment and assembly.
• compositions are prepared by addition of the hydrophilic agents to latex 1, at room temperature, with the latex/agent ratios mentioned in table I below, expressed on a dry matter/dry matter basis, and dilution with deionized water.
• Test 3 Surface Tension of A Washing Water (With NaCl)
• the surface tension is measured with a Whilemy plate according to ASTM standard D1331.
• the tests are performed at 24° C. using as reference distilled water at 71.9 mN/m 2 and a saline solution measured at 71 mN/m 2 .
• the invention provides advantageous, durable hydrophilicity and/or permeability, without substantially lowering the surface tension of a washing water.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Paints Or Removers (AREA)
• Absorbent Articles And Supports Therefor (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Laminated Bodies (AREA)
• Orthopedics, Nursing, And Contraception (AREA)
• Application Of Or Painting With Fluid Materials (AREA)

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• 2003
  • 2003-10-08 FR FR0311759A patent/FR2860799B1/fr not_active Expired - Fee Related
• 2004
  • 2004-10-08 WO PCT/FR2004/002553 patent/WO2005035675A2/fr active IP Right Grant
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  • 2004-10-08 BR BRPI0415188-7A patent/BRPI0415188B1/pt not_active IP Right Cessation
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  • 2004-10-08 US US10/575,144 patent/US20070275618A1/en not_active Abandoned
  • 2004-10-08 AT AT04791503T patent/ATE391757T1/de not_active IP Right Cessation
  • 2004-10-08 US US10/574,413 patent/US7829193B2/en not_active Expired - Fee Related
  • 2004-10-08 CA CA002539628A patent/CA2539628A1/fr not_active Abandoned
  • 2004-10-08 JP JP2006530424A patent/JP2007514563A/ja active Pending
  • 2004-10-08 DE DE602004013041T patent/DE602004013041T2/de active Active
  • 2004-10-08 CN CNB2004800294438A patent/CN100478409C/zh not_active Expired - Fee Related
  • 2004-10-08 WO PCT/FR2004/002552 patent/WO2005035674A2/fr active Application Filing
  • 2004-10-08 CN CNA2004800296626A patent/CN1867728A/zh active Pending
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