WO2007107721A1 - Structure de barrière perméable à l'air, imperméable aux liquides pour vêtements de protection - Google Patents

Structure de barrière perméable à l'air, imperméable aux liquides pour vêtements de protection Download PDF

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Publication number
WO2007107721A1
WO2007107721A1 PCT/GB2007/000946 GB2007000946W WO2007107721A1 WO 2007107721 A1 WO2007107721 A1 WO 2007107721A1 GB 2007000946 W GB2007000946 W GB 2007000946W WO 2007107721 A1 WO2007107721 A1 WO 2007107721A1
Authority
WO
WIPO (PCT)
Prior art keywords
barrier structure
membrane
structure according
barrier
layer
Prior art date
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.)
Ceased
Application number
PCT/GB2007/000946
Other languages
English (en)
Inventor
Robert Fulford
Stanley Russell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Remploy Ltd
Russell Stanley Corp
Original Assignee
Remploy Ltd
Russell Stanley Corp
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 Remploy Ltd, Russell Stanley Corp filed Critical Remploy Ltd
Publication of WO2007107721A1 publication Critical patent/WO2007107721A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
    • A41D31/102—Waterproof and breathable
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/12—Hygroscopic; Water retaining
    • A41D31/125—Moisture handling or wicking function through layered materials
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D5/00—Composition of materials for coverings or clothing affording protection against harmful chemical agents
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • 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
    • 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
    • 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
    • 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
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2307/728—Hydrophilic
    • 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
    • B32B2437/00—Clothing
    • 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
    • B32B2571/00—Protective equipment

Definitions

  • This invention relates to a barrier structure particularly for protective garments which may be of the so-called NBC (Nuclear, Biological and Chemical resistant) or CBRN (Chemical, Biological, Radiation and Nuclear resistant) kind.
  • NBC or CBRN suits are worn by personnel engaged in hazardous duties or tasks, such as military or defence forces, fire brigade, police, medical and rescue personnel.
  • Such suits include gas tight suits made from air and water vapour impervious materials such as polyurethane or rubber sheeting. Such suits can provide an effective barrier against noxious substances. However, they prevent escape of air and moisture from within the suit which can cause discomfort or even personal danger to the wearer, especially in hot environments, and this imposes a serious limitation on their use.
  • the activated carbon layer may comprise carbon particles e.g. as described in
  • U.S. 4457345 describes the use of fabrics made with activated carbon fibres.
  • U.S. 2005/0252379A describes the use of a layer of activated carbon fibre which is spot-bonded to a textile fabric carrier and which may be used in combination with a pervious polymeric membrane.
  • Pervious membranes or coatings are well known in the case where escape of air and water vapour is required in a waterproof structure.
  • porous polytetrafluoroethylene coatings made by stretching polymer sheets to cause the sheets to rupture and form small holes or pores, such as the coating material sold as Gortex®, e.g. as described in U.S. 3953566.
  • Such coatings can ensure high levels of comfort but do not reliably have a high level of resistance to penetration by noxious substances. The requirement of breathability and comfort with effective protection against ingress of noxious substances is difficult to achieve.
  • An object of the present invention is to provide a barrier structure which has good breathability yet which can afford effective protection against ingress of noxious substances.
  • the invention is based on the realisation that the use of an activated carbon layer in conjunction with a non-porous or liquid proof gas and vapour permeable polymeric membrane of the intrinsically permeable hydrophilic kind can give significant benefits.
  • a barrier structure comprising an adsorption structure having at least one porous activated carbon layer, and at least one membrane applied to the adsorption structure, which membrane is a liquid proof gas and vapour permeable polymeric membrane formed from an intrinsically permeable hydrophilic polymeric material.
  • the membrane can allow breathability in a carefully controlled manner i.e. such as to permit adequate rates of escape of air and water vapour whilst effectively preventing ingress of noxious substances.
  • polymeric materials of the hydrophilic intrinsically permeable kind are conducive to manufacture of soft, flexible membranes. Accordingly, when used to make a protective suit or other garment, the barrier structure of the invention can ensure good wearer comfort and safety without compromising protection against noxious substances.
  • the polymeric material may be as described in GB 2087909A and GB 2157703 A.
  • the material may be a polyurethane block copolymer having hard and soft segments made by reaction of a polyisocyanate polyol, and a lower molecular weight component having active hydrogens such as a polyol, a polyamide, a polyhydrazide.
  • the resulting material typically has a non-porometric polymeric structure with hard segmental nodes linked by a web of fibrils defining small molecular pores therebetween. No destructive mechanical treatment, such as stretching is necessary to produce pores or holes by rupturing of the membrane whereby it can be ensured that all pores are small molecular pores rather than larger structural holes.
  • the activated carbon layer may provide a high surface activated carbon using known techniques, as mentioned above and thus may comprise carbon particles which may be microparticles or larger beads and which may be bonded or otherwise applied to a porous textile or other carrier sheet or layer, and/or carbon fibres incorporated into a cloth (referred to as carbon cloth or charcoal cloth) which cloth may be a knitted, woven or non- woven structure or any combination of these structures formed wholly from the carbon fibres or from a mixture of the fibres with any other fibres.
  • activated carbon layer There may be one activated carbon layer which, as appropriate, may be assembled with one carrier sheet or layer. Alternatively multiple such layers may be assembled in any combination to give a laminated said adsorption structure with the layers merely in juxtaposition and/or attached or held in position relative to each other in any suitable manner using bonding, stitching, interweaving, enclosure or the like.
  • the overriding requirement is that the adsorption structure should be freely porous so as to allow ready flow therethrough of air and water vapour whilst presenting a high activated carbon surface area to ensure adsorptive contact with noxious substances which may be contained in air or gas or vapour or liquid whether in solid or dissolved or colloidal or suspended form.
  • the (or each) said non-porous membrane may be applied to the activated carbon adsorption structure by close juxtaposition thereto and/or by attachment or retention relative to the adsorption structure in any suitable manner.
  • the membrane is attached to the adsorption structure by bonding e.g. using a foam, hot melt, hot melt dot, powder, web, net, transfer or direct coating technique.
  • the bonding technique is not such as to obscure unduly the permitted permeability of the barrier structure or the membrane and thus a porous adhesive layer and/or application of adhesive to selected regions only of the membrane may be used.
  • a single membrane may be applied to one outer surface of the adsorption structure, particularly a surface thereof intended to be directed outwardly.
  • multiple membranes may be used, on both outer faces of the adsorption structure and/or internally thereof e.g. between layers where the adsorption structure is laminated.
  • the barrier structure may be used in conjunction with additional layers applied to one or both outer faces thereof.
  • a layer applied to or simply held or used loosely in juxtaposition relative to that outer surface which is intended to be directed outwardly which layer may be a porous material, such as a fabric, chemically treated with a resistant substance, or formed from a material such as aramid fibres, such as Kevlar® or Nomex®, which gives strength and is intrinsically resistant to extreme adverse influences.
  • a layer applied to or simply held or used loosely in juxtaposition relative to that outer surface of the barrier structure which is intended to be directed inwardly which layer may be a high comfort wicking fabric which minimises retention of moisture and facilitates escape of such moisture as water vapour with warm air through the barrier structure outwardly thereof.
  • the barrier structure may also be used with one or more added layers which incorporate other protective substances or structures, and/or the materials of the barrier structure may incorporate such substances or structures, for any desired further purpose as appropriate.
  • metallic substances may be incorporated for purposes such as heat reflection and lowering of the thermal image, as described in DE 10224860.
  • such substances may be incorporated in the (or each) membrane during manufacture thereof.
  • the barrier structure of the invention may be used to manufacture any suitable garment, shelter, cover or the like for protecting against exposure of a person's skin to noxious substances.
  • the barrier structure is particularly useful for manufacture of a protective suit in which case to ensure that the entire suit is gas tight to a required level cut panels of the barrier structure may be assembled together via gas tight seams made by sewing and taping edges of the membrane and/or by heat welding or ultrasonic welding of adjacent membrane edges using seam free technology.
  • FIG. 1 is a diagrammatic sectional view through one form of a garment made with a protective barrier in accordance with the present invention
  • Figure 2 is an enlarged detail of a membrane forming part of the protective barrier of Figure 1.
  • Figure 1 shows a section through a protective suit to be worn by a person to give NBC or CBRN protection.
  • the suit has a central protective barrier 1 made from flexible panels which are joined at edges to form the suit which defines a sealed enclosure around some or all of the wearer's body.
  • the protective barrier 1 has a central adsorption structure 2 which has a layer of activated carbon 3 which may be self supporting or may be bonded to a carrier layer 4 such as a textile cloth.
  • the activated carbon 3 may be particulate or may be formed from carbon fibres as hereinbefore described.
  • the adsorption structure is porous and permits ready flow therethrough of gas, air, liquid, vapour, in intimate contact with the relatively large surface area of the activated carbon material.
  • a membrane 5 is bonded to the outer surface of the adsorption structure 2. Spot bonding or similar technique is used to ensure that the membrane 5 and the adsorption structure 2 are not unduly obstructed by the adhesive.
  • the membrane 5 is a thin polyurethane sheet formed in the manner described in GB 2087909A or GB 2157703 A as mentioned above. This sheet allows passage therethrough of air and water vapour but is otherwise non-porous i.e. it does not allow passage therethrough of larger molecules. It is gas tight so far as such larger molecules are concerned.
  • the membrane has these properties intrinsically as a consequence of its molecular structure as shown in Figure 2. That is, the polyurethane material has solid nodes linked by fibrils. This also gives softness and flexibility to the sheet.
  • the membrane may incorporate one or more metal ions as described in
  • the panels of the protective barrier 2 are assembled edge to edge with gas tight joins which may be taped seams or welds.
  • the protective barrier 2 in assembled form is worn over a separate wicking, internal suit or inner garment 6 made from synthetic fibres which channel body moisture and hot air away from the person's body to the protective barrier from where it can escape to its outwardly directed surface.
  • An outer porous protective suit 7 is worn on top of the protective barrier 1 to give protection against adverse influences whilst allowing escape of body moisture and hot air.
  • This outer protective suit 7 may be made from a strong, chemical resistant fibre such as Kevlar® or Nomex®.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Laminated Bodies (AREA)

Abstract

La structure de barrière faisant l'objet de cette invention peut être utilisée dans un vêtement de protection étanche au gaz et possède une structure d'adsorption (2) et une membrane (5) attachée à la structure d'adsorption (2). La structure d'adsorption comporte une couche de carbone activé (3) qui peut contenir des particules liées à un support textile (4). La membrane (5) est une membrane polymérique imperméable aux liquides et perméable aux gaz et à la vapeur, formée d'un matériau polymérique hydrophile intrinsèquement perméable, tel qu'un copolymère séquencé comportant des nœuds segmentaux durs liés par un réseau de fibrilles définissant de petits pores moléculaires.
PCT/GB2007/000946 2006-03-17 2007-03-16 Structure de barrière perméable à l'air, imperméable aux liquides pour vêtements de protection Ceased WO2007107721A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0605335.9A GB0605335D0 (en) 2006-03-17 2006-03-17 Barrier structure for protective garments
GB0605335.9 2006-03-17

Publications (1)

Publication Number Publication Date
WO2007107721A1 true WO2007107721A1 (fr) 2007-09-27

Family

ID=36292898

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/000946 Ceased WO2007107721A1 (fr) 2006-03-17 2007-03-16 Structure de barrière perméable à l'air, imperméable aux liquides pour vêtements de protection

Country Status (2)

Country Link
GB (1) GB0605335D0 (fr)
WO (1) WO2007107721A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087909A (en) * 1980-11-22 1982-06-03 Shirley Inst Breathable non-porous polyurethane film
EP0037745B1 (fr) * 1980-04-09 1984-06-27 E.I. Du Pont De Nemours And Company Imperméables protectives comprenant un film polymère hautement fluoré échangeur d'ions
GB2157703A (en) * 1984-04-19 1985-10-30 Shirley Inst Breathable, non-poromeric polyurethane films
US5024594A (en) * 1986-07-23 1991-06-18 Membrane Technology & Research, Inc. Protective clothing material
WO1993008024A2 (fr) * 1991-10-15 1993-04-29 Freudenberg Nonwovens Ltd. Materiau de protection
EP0893113A1 (fr) * 1997-07-25 1999-01-27 The Procter & Gamble Company Articles absorbants comprenant une couche perméable au gaz et expansible au contact des liquides
DE10224860A1 (de) * 2002-05-13 2003-12-24 Polycoating Gmbh Textiles Material
WO2005049147A1 (fr) * 2003-10-22 2005-06-02 BLüCHER GMBH Vetement de protection nbc

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037745B1 (fr) * 1980-04-09 1984-06-27 E.I. Du Pont De Nemours And Company Imperméables protectives comprenant un film polymère hautement fluoré échangeur d'ions
GB2087909A (en) * 1980-11-22 1982-06-03 Shirley Inst Breathable non-porous polyurethane film
GB2157703A (en) * 1984-04-19 1985-10-30 Shirley Inst Breathable, non-poromeric polyurethane films
US5024594A (en) * 1986-07-23 1991-06-18 Membrane Technology & Research, Inc. Protective clothing material
WO1993008024A2 (fr) * 1991-10-15 1993-04-29 Freudenberg Nonwovens Ltd. Materiau de protection
EP0893113A1 (fr) * 1997-07-25 1999-01-27 The Procter & Gamble Company Articles absorbants comprenant une couche perméable au gaz et expansible au contact des liquides
DE10224860A1 (de) * 2002-05-13 2003-12-24 Polycoating Gmbh Textiles Material
WO2005049147A1 (fr) * 2003-10-22 2005-06-02 BLüCHER GMBH Vetement de protection nbc

Also Published As

Publication number Publication date
GB0605335D0 (en) 2006-04-26

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