EP0202996A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Flexible laminated fluoropolymer containing composites
Assignee: Saint Gobain Performance Plastics Corp
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Filing: 1986-05-09
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Granted: —
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Expires: 2006-05-09
Abstract
Abstract Fire and chemical resistant, flexible composites are made from flexible woven, non-woven and knitted substrates and fluoropolymer containing films. Adhesives, such as melt adhesives, may be used in making the composites. The composites are suitable for use in protective garments, and in other articles where flexible chemically resistant materials are needed. A seaming technique for use in protective articles is described.
Inventors
- 👤 Ronald A. Sahatjian
- 👤 Mark G. Steckel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 16:10
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; A; A41; A41D; A41D27/00; A41D27/24; A41D27/245; A62; A62D; A62D5/00; B32B27/12; B32B27/32; B32B27/322; B32B5/00; B32B5/02; B32B5/022; B32B5/024; B32B5/026; B32B7/00; B32B7/04; B32B7/12; D; D06; D06N; D06N3/00; D06N3/04; D06N3/047; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2327/00; B32B2571/00; B32B2571/02; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/30; Y10T442/3854; Y10T442/3878
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
25 words
Flexible composites comprising a fluoropolymer-containing layer laminated to one or both sides of a flexible substrate, said layers each being less than 5 mil thick.
Claim 2
Dependent Claim
25 words
Flexible composites comprising a fluoropolymer-containing layer laminated to one or both sides of a flexible substrate, said layers each being less than 5 mil thick.
Claim 3
Dependent Claim
29 words
A composite according to claim 1, wherein an adhesive is applied between the fluoropolymer-containing layers and the flexible substrate, said adhesive being between about 0.1 and 1.5 mil thick.
Claim 4
Dependent Claim
25 words
A composite according to claim 2, wherein the adhesive is a melt adhesive having a melt temperature lower than the substrate and the fluoropolymer-containing layers.
Claim 5
Dependent Claim
13 words
A composite according to claim 3, wherein the melt adhesive is a fluoropolymer.
Claim 6
Dependent Claim
12 words
A composite according to claim 4, wherein the melt adhesive comprises FEP.
Claim 7
Dependent Claim
51 words
A composite according to any one of claims 15, wherein the fluoropolymer-containing layer comprises a fluropolymer selected from the group consisting of polytetrafluorethylene, fluorinated ethylene propylene copolymer, perfluoroalkoxy resin, homopolymers of polychlorotrifluoroethylene, copolymers of polychlorotriflooroethylene with - trifluoroethylene or vinylidene fluoride, ethylene- chlorotrifluorethylene copolymer, ethylenetetrafluoroethylene copolymer, polyvinylidene fluoride and polyvinyl fluoride.
Claim 8
Dependent Claim
53 words
A composite according to claim 6, wherein the substrate comprises a flexible material selected from the group consisting of glass, fiberglass, ceramics, graphite, polybenzimidazole, polytetrafluoroethylene, polyaramides, metal, polyolefins, polyesters, polyamides, polyimides, thermoplastics, polyphenylene sulfide, polyether oxides, polyether sulfones, polyether ketones, novoloid phenolic fibers, cotton, and asbestos, said flexible material being woven, nonwoven-or knitted.
Claim 9
Dependent Claim
25 words
A composite according to any one of claims 1-3, additionally comprising a layer of melt adhesive applied to the outer surface of the fluoropolymer-containing layer.
Claim 10
Dependent Claim
14 words
A composite according to claim 8, wherein the fluoropolymer-containing layers are 1-2 mil thick.
Claim 11
Dependent Claim
15 words
A composition according to claim 8, wherein the outer melt adhesive is a polyfluoroalkoxy resin.
Claim 12
Independent Claim
28 words
A method for preparing flexible composites comprising casting a film of a fluoropolymer containing material, and laminating the film to one or both sides of a flexible substrate.
Claim 13
Independent Claim
28 words
A method for preparing flexible composites comprising casting a film of a fluoropolymer containing material, and laminating the film to one or both sides of a flexible substrate.
Claim 14
Dependent Claim
24 words
A method according to claim 11, including placing a layer of an adhesive between the fluoropolymer-containing film and the flexible substrate prior to lamination.
Claim 15
Dependent Claim
20 words
A method according to claim 12, wherein the layer of adhesive is cast onto the fluoropolymer-containing film prior to lamination.
Claim 16
Dependent Claim
16 words
A method according to claim 12 or 13, wherein lamination is accomplished using pressure and heat.
Claim 17
Dependent Claim
20 words
A flexible article made of a composite comprising a fluoropolymer film laminated to at least one side of a substrate.
Claim 18
Dependent Claim
20 words
A flexible article made of a composite comprising a fluoropolymer film laminated to at least one side of a substrate.
Claim 19
Dependent Claim
23 words
A flexible fire resistant article made of composite comprising a fluoropolymer film laminated to at least one side of a fire resistant substrate.
Claim 20
Dependent Claim
23 words
A flexible fire resistant article made of composite comprising a fluoropolymer film laminated to at least one side of a fire resistant substrate.
Claim 21
Dependent Claim
40 words
An article according to claim 15, wherein the substrate is selected from the group consisting of glass, ceramics, graphite, polybenzimidazole, PTFE, polyaramides, metal wire, polyolefins, polyesters, polyamides, thermoplastics, polyether sulfones, polyether ketones, cotton cloth and other natural and synthetic textiles.
Claim 22
Dependent Claim
40 words
An article according to claim 15, wherein the fluoropolymer-containing film contains a fluropolymer selected from the group consisting of fluoroelastomers, fluoroplastics, perfluoroelastomers, perfluoroplastics, blends of fluoroor perfluoroelastomers with fluoro-or perfluoroplastics, and blends of perfluoroplastics with polyimides, or with polyphenylene sulfide.
Claim 23
Dependent Claim
20 words
An article according to claim 18, wherein a melt adhesive is used to adhere the fluoropolymer-containing film to the substrate.
Claim 24
Dependent Claim
27 words
An article according to claim 18, additionally comprising an outer layer of melt adhesive on the fluoropolymer film to improve heat sealability of the material to itself.
Claim 25
Dependent Claim
12 words
An article according to claim 20, wherein the melt adhesive is PFA.
Claim 26
Dependent Claim
15 words
An article according to claim 15 or 16, comprising clothing, a shelter or a covering.
Claim 27
Independent Claim
81 words
A method of seaming flexible materials which have a melt adhesive on both sides comprising placing the edges to be joined together, with the exterior surfaces touching and the cut edges superimposed; making a seamf along the edges to be joined; folding the seam allowance to lay against the interior of one piece; heat sealing the seamf allowance in place; - whereby a seam is produced in which the edges of the fabric and the seam are isolated from the exterior.
Claim 28
Independent Claim
81 words
A method of seaming flexible materials which have a melt adhesive on both sides comprising placing the edges to be joined together, with the exterior surfaces touching and the cut edges superimposed; making a seamf along the edges to be joined; folding the seam allowance to lay against the interior of one piece; heat sealing the seamf allowance in place; - whereby a seam is produced in which the edges of the fabric and the seam are isolated from the exterior.
Claim 29
Dependent Claim
16 words
A method according to claim 23, wherein the seam is made by heat sealing the edges.
References Cited (Backward Citations)
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