FR2689446A1 - Flexible nonwoven absorbent watertight composite - comprising layer of absorbent gelling powder between upper permeable sheet and lower watertight sheet - Google Patents

Flexible nonwoven absorbent watertight composite - comprising layer of absorbent gelling powder between upper permeable sheet and lower watertight sheet Download PDF

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Publication number
FR2689446A1
FR2689446A1 FR9204523A FR9204523A FR2689446A1 FR 2689446 A1 FR2689446 A1 FR 2689446A1 FR 9204523 A FR9204523 A FR 9204523A FR 9204523 A FR9204523 A FR 9204523A FR 2689446 A1 FR2689446 A1 FR 2689446A1
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FR
France
Prior art keywords
absorbent
watertight
powder
composite
sheet
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Legal status (The legal status 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 status listed.)
Pending
Application number
FR9204523A
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French (fr)
Inventor
Noirault-Massol Lionel
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NOIRAULT MASSOL LIONEL
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NOIRAULT MASSOL LIONEL
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Application filed by NOIRAULT MASSOL LIONEL filed Critical NOIRAULT MASSOL LIONEL
Priority to FR9204523A priority Critical patent/FR2689446A1/en
Publication of FR2689446A1 publication Critical patent/FR2689446A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B32B5/30—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 formed of particles, e.g. chips, granules, powder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A61B46/40—Drape material, e.g. laminates; Manufacture thereof
    • 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
    • A61F13/00987—Apparatus or processes for manufacturing non-adhesive dressings or bandages
    • 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
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01008—Non-adhesive bandages or dressings characterised by the material
    • A61F13/01017—Non-adhesive bandages or dressings characterised by the material synthetic, e.g. polymer based
    • 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
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • 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
    • B32B5/16—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 features of a layer formed of particles, e.g. chips, powder or granules
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/10—Devices for removing the material from the surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0023—Surgical instruments, devices or methods, e.g. tourniquets disposable
    • 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
    • A61F13/00051—Accessories for dressings
    • A61F13/00063—Accessories for dressings comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
    • 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
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers
    • A61F13/5148—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers having an impervious inner layer and a cloth-like outer layer
    • 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
    • A61F2013/00089—Wound bandages
    • A61F2013/00293—Wound bandages anallergic or hypoallergic material
    • 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
    • A61F2013/00361—Plasters
    • A61F2013/00727—Plasters means for wound humidity control
    • A61F2013/00731—Plasters means for wound humidity control with absorbing pads
    • A61F2013/00744—Plasters means for wound humidity control with absorbing pads containing non-woven
    • 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
    • A61F2013/00361—Plasters
    • A61F2013/00727—Plasters means for wound humidity control
    • A61F2013/00748—Plasters means for wound humidity control with hydrocolloids or superabsorbers
    • 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
    • A61F2013/00361—Plasters
    • A61F2013/00902—Plasters containing means
    • A61F2013/0091—Plasters containing means with disinfecting or anaesthetics means, e.g. anti-mycrobic
    • 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
    • A61F2013/00361—Plasters
    • A61F2013/00982—Plasters anallergic or hypoallergic material
    • 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
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51441—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material
    • A61F2013/5145—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being treated materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • 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
    • B32B2264/025—Acrylic resin particles, e.g. polymethyl methacrylate or ethylene-acrylate copolymers
    • 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
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • 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
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Textile Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

A flexible, nonwoven, absorbent and watertight composite comprises a layer (2) of absorbent and gelling powder enclosed between two nonwoven sheets of natural or synthetic fibres including a rubberised binder, an upper permeable sheet (1) and a lower watertight sheet (3) obtd. by (heat) bonding an impermeable film (6) after assembling the composite by hot calendering. Pref. the powder (2) is a polyacrylate compsn. forming a gel after absorbing liq. On contact with liqs., the powder (2) is antiseptic and/or bactericidal and/or sporicidal and/or fungicidal and/or deodorant. The watertight film (6) is of non-chlorinated polyethylene. USE/ADVANTAGE - The composite has applns. in medicine, in the funeral business, and in recovering oil slicks from the surface of water. The prod. is very thin before contact with liqs. and very light, absorbs liqs. quickly, causes no allergies or toxicity on burning, can be cut cleanly, is totally watertight, degrades or fragments in contact with air or light, and yields energy on destruction by burning.

Description

COMPLEXE SOUPLE NON-TISSE, ABSORBANT ET
ETANCHE
La présente invention a pour objet un complexe souple non-tisse, absorbant et étanche.FLEXIBLE NON-WOVEN, ABSORBENT AND
WATERPROOF
The present invention relates to a flexible non-woven, absorbent and waterproof complex.

Il est destiné plus particulièrement à des usages médicaux, fabrication de champs opératoires à usage unique par exemple, mais peut trouver des applications dans de nombreux domaines tels que l'industrie funéraire, ou il peut être utilisé pour garnir le fond des cercueils ou être intégre aux capitons; on peut même envisager son emploi pour la récupération de nappes d'hydrocarbures à la surface des eaux (marées noires). It is intended more particularly for medical uses, manufacture of single-use operating drapes for example, but can find applications in many fields such as the funeral industry, or it can be used to garnish the bottom of coffins or be integrated to the capitons; one can even consider its use for the recovery of oil slicks on the surface of waters (oil spills).

Le marché des non-tissés (ou intissés) présente à ce jour des voiles de différents types qui remplissent plusieurs fonctions, selon leurs qualités. The market for nonwovens (or non-woven fabrics) today presents sails of different types which fulfill several functions, depending on their qualities.

Les differentes qualités des non-tissés se distinguent essentiellement par leurs épaisseurs exprimées en grammes par mètre carre - très variables. The different qualities of nonwovens are mainly distinguished by their thicknesses expressed in grams per square meter - very variable.

Celles-ci déterminent les résistances aux ruptures, déchirures ou pliures (seches ou humides) des produits concernés.These determine the resistance to breaks, tears or folds (dry or wet) of the products concerned.

Les non-tissés sont employes dans de nombreux secteurs industriels aussi divers que: ameublement, literie, confection-habillement, couches-culottes, maroquinerie, médecine, etc. Nonwovens are used in many industrial sectors as diverse as: furniture, bedding, clothing, diapers, leather goods, medicine, etc.

Actuellement les produits courants presentent de faibles capacites d'absorption des liquides et n'ont intrinsèquement aucune étanchéité. Les non-tissés à forte qualite d'absorption sont épais, encombrants ou lourds, et leur couche inférieure est dépourvue d'impermeabilite.  Currently, current products have low capacity for absorbing liquids and have no intrinsic seal. Nonwovens with a high absorption quality are thick, bulky or heavy, and their lower layer is free of impermeability.

La presente invention permet d'obtenir une gamme de produits présentant des avantages nombreux, jamais réunis jusqu'à ce jour dans ce type de materiaux, et en particulier:
- une grande légèreté (produit très mince avant son contact avec les liquides),
- une absorption rapide des liquides les plus fluides,
- l'absence de réactions allergiques et de toxicité à la flamme,
- une decoupe franche sans effilochage,
- une étanchéité totale, renforcée par la capacité d'absorption,
- des qualités "biologiques" (produit dégradable ou fragmentable dans le temps au contact de 1 air ou de la lumière par photosynthèse).The present invention makes it possible to obtain a range of products having numerous advantages, never combined to date in this type of material, and in particular:
- great lightness (very thin product before contact with liquids),
- rapid absorption of the most fluid liquids,
- the absence of allergic reactions and toxicity to the flame,
- a clean cut without fraying,
- total tightness, reinforced by the absorption capacity,
- "biological" qualities (product degradable or fragmentable over time in contact with air or light by photosynthesis).

Le complexe absorbe et gélifie les liquides en gonflant; il permet dans de nombreux cas de remplacer plusieurs produits qui devaient auparavent être associés pour obtenir les mêmes résultats. The complex absorbs and gels liquids while swelling; in many cases it can replace several products which previously had to be combined to obtain the same results.

Il est constitue par la combinaison d'un complexe formé d'une couche de poudre absorbante et gélifiante emprisonnée entre deux voiles non-tissés incorporant un liant caoutchouté, un voile superieur nontissé perméable et un voile inférieur non-tissé étanche obtenu par application d'un film impermeable après assemblage du complexe par calendrage à chaud. It is constituted by the combination of a complex formed by a layer of absorbent and gelling powder trapped between two nonwoven veils incorporating a rubberized binder, a nonwoven permeable upper veil and a waterproof nonwoven lower veil obtained by application of a waterproof film after assembly of the complex by hot calendering.

Sur les dessins schématiques annexés, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention:
la figure 1 représente une coupe transversale du complexe,
la figure 2 illustre le principe de fabrication du produit,
les figures 3 et 4, montrent le complexe avant et après absorption d'un liquide.In the appended schematic drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention:
FIG. 1 represents a cross section of the complex,
FIG. 2 illustrates the principle of manufacturing the product,
Figures 3 and 4 show the complex before and after absorption of a liquid.

Le dispositif, figures 1 à 4, est constitué drun voile non-tissé supérieur 1 perméable, d'une couche de poudre absorbante gélifiante 2 et d'un voile non tissé inferieur 3 étanche. The device, FIGS. 1 to 4, consists of a permeable upper nonwoven veil 1, a layer of absorbent gelling powder 2 and a waterproof lower nonwoven veil 3.

Les voiles supérieur 1 et inférieur 3 peuvent être composés de tous types ou qualités de non-tissés en fibres naturelles ou synthétiques ayant subi les tests usuels: poids, force et allongement à la rupture, résistance à la déchirure amorcée, perméabilité à l'air, stabilité dimensionnelle, tenue à la flamme, résistance à la flexion, point de ramolissement, etc, en fonction de l'utilisation à laquelle le produit final est destiné. Les voiles intisses seront imprégnes d'un liant catchouté permettant de les assembler par calandrage à chaud 7 en emprisonnant la poudre absorbante 2 introduite entre les deux couches d'intissées par un système de pulvérisation 8 (figure 2), de manière à former un complexe pouvant être manipule aisément et découpé pour lui donner toute forme souhaitee. The upper 1 and lower 3 sails may be composed of all types or qualities of nonwovens made of natural or synthetic fibers having undergone the usual tests: weight, strength and elongation at break, resistance to initiated tearing, air permeability , dimensional stability, flame resistance, flexural strength, softening point, etc., depending on the use for which the final product is intended. The sail sheets will be impregnated with a catchouté binder making it possible to assemble them by hot calendering 7 by trapping the absorbent powder 2 introduced between the two layers of non-woven by a spraying system 8 (FIG. 2), so as to form a complex can be easily manipulated and cut to give it any desired shape.

La poudre absorbante 2 sera de préférence une composition à base de polyacrylates formant un gel 4 (figure 4) après absorption de liquide. Son gonflement au contact des liquides pourra atteindre différentes passeurs; celles-ci varieront en fonction de la capacité d'absorption recherchée. Au contact des liquides, la poudre absorbante peut remplir différentes fonctions: antiseptique, bactéricide, sporicide, fongicide, désodorisant, etc, en fonction du type et de la qualité de l'élément absorbant employé.  The absorbent powder 2 will preferably be a composition based on polyacrylates forming a gel 4 (FIG. 4) after absorption of liquid. Its swelling in contact with liquids may reach different couriers; these will vary depending on the absorption capacity sought. In contact with liquids, the absorbent powder can fulfill various functions: antiseptic, bactericidal, sporicidal, fungicidal, deodorant, etc., depending on the type and quality of the absorbent element used.

L'étanchéité du voile inférieur 3 est obtenue en associant au non-tissé 5 un film étanche 6 spécial. Ce dernier est appliqué par collage ou thermocollage après assemblage du complexe. Le film étanche sera avantageusement fabriqué en poyétylène sans chlore. The sealing of the lower web 3 is obtained by associating with the nonwoven 5 a special waterproof film 6. The latter is applied by gluing or heat-bonding after assembly of the complex. The waterproof film will advantageously be made of chlorine-free polyethylene.

Selon les utilisations du complexe, les éléments intissés et le film étanche seront au moins partiellement bio-dégradables ou bio-fragmentables, en particulier pour les applications dans le domaine funeraire.  Depending on the uses of the complex, the non-woven elements and the waterproof film will be at least partially bio-degradable or bio-fragmentable, in particular for applications in the funeral sector.

Pour les emplois dans le secteur médical, les produits de base devront être non allergiques et non toxiques à la flamme; ils présenteront en outre un bon rendement énergétique lors de leur destruction par combustion, les articles susceptibles d'être réalisés avec ce materiau étant généralement brûlés après usage dans des installations récupératrices de calories. For jobs in the medical sector, the basic products must be non-allergic and non-toxic to the flame; they will also have a good energy yield during their destruction by combustion, the articles capable of being produced with this material being generally burned after use in heat recovery installations.

Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires.  The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims (6)

REVENDICATIONS caractérisé par la combinaison d'un complexe formé d'une couche de poudre (2) absorbante et gélifiante emprisonnée entre deux voiles non-tisses en fibres naturelles ou synthétiques incorporant un liant caoutchouté, un voile supérieur (1) perméable et un voile inférieur (3) étanche obtenu en appliquant par collage ou thermocollage un film imperméable (6) après assemblage du complexe par calendrage à chaud.CLAIMS characterized by the combination of a complex formed by a layer of absorbent and gelling powder (2) trapped between two non-woven veils of natural or synthetic fibers incorporating a rubberized binder, a permeable upper veil (1) and a lower veil (3) waterproof obtained by applying by gluing or heat-sealing an impermeable film (6) after assembly of the complex by hot calendering. 1". Complexe souple non-tissé, absorbant et étanche, destine en particulier à des usages médicaux, mais pouvant trouver des applications dans de nombreux domaines tels que l'industrie funéraire ou la récupération de nappes d'hydrocarbures à la surface des eaux, 1 ". Flexible non-woven, absorbent and waterproof complex, intended in particular for medical uses, but which can find applications in many fields such as the funeral industry or the recovery of layers of hydrocarbons on the surface of waters, 2". Dispositif selon la revendication 1, se caractérisant par le fait que la poudre (2) absorbante est une composition à base de polyacrylates formant un gel (4) après absorpbtion de liquide. 2 ". Device according to claim 1, characterized in that the absorbent powder (2) is a composition based on polyacrylates forming a gel (4) after absorption of liquid. 3 . Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que, au contact des liquides, la poudre (2) absorbante est antiseptique, et/ou bactéricide, et/ou sporicide, et/ou fongicide, et/ou désodorisante.  3. Device according to any one of the preceding claims, characterized in that, in contact with the liquids, the absorbent powder (2) is antiseptic, and / or bactericidal, and / or sporicidal, and / or fungicidal, and / or deodorant . 4 . Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le film étanche (6) est fabrique en poyétylène sans chlore. 4. Device according to any one of the preceding claims, characterized in that the waterproof film (6) is made of poyetylene without chlorine. 5". Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les éléments intissés (1, 5) et le film étanche (6) sont au moins partiellement bio-dégradables ou biofragmentables. 5 ". Device according to any one of the preceding claims, characterized in that the non-woven elements (1, 5) and the waterproof film (6) are at least partially bio-degradable or biofragmentable. 6 . Dispositif selon l'une quelconque des revendications 1 à 4, se caractérisant par le fait que les produits de base entrant dans la composition du complexe sont non allergiques et non toxiques à la flamme et présentent un bon rendement énergétique lors de leur destruction par combustion.  6. Device according to any one of Claims 1 to 4, characterized in that the basic products used in the composition of the complex are non-allergic and non-toxic to the flame and exhibit good energy yield when destroyed by combustion.
FR9204523A 1992-04-07 1992-04-07 Flexible nonwoven absorbent watertight composite - comprising layer of absorbent gelling powder between upper permeable sheet and lower watertight sheet Pending FR2689446A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9204523A FR2689446A1 (en) 1992-04-07 1992-04-07 Flexible nonwoven absorbent watertight composite - comprising layer of absorbent gelling powder between upper permeable sheet and lower watertight sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9204523A FR2689446A1 (en) 1992-04-07 1992-04-07 Flexible nonwoven absorbent watertight composite - comprising layer of absorbent gelling powder between upper permeable sheet and lower watertight sheet

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FR2689446A1 true FR2689446A1 (en) 1993-10-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006105061A2 (en) * 2005-03-25 2006-10-05 Myers Surgical Solutions, Llc Conformable drape system
WO2011138583A1 (en) 2010-05-06 2011-11-10 George Lyall Walker Oil spill recovery method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006105061A2 (en) * 2005-03-25 2006-10-05 Myers Surgical Solutions, Llc Conformable drape system
WO2006105061A3 (en) * 2005-03-25 2007-03-29 Myers Surgical Solutions Llc Conformable drape system
WO2011138583A1 (en) 2010-05-06 2011-11-10 George Lyall Walker Oil spill recovery method

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