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EP0123966A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Porous static electric charge dissipative laminate

Assignee: W.L. Gore and Associates Inc
•
Filing: 1984-04-06
•
Granted: —
•
Expires: 2004-04-06
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Abstract

Abstract The invention concerns a laminate for use in a garment for a clean room environment where formation of static charge on clothing worn by a worker in the clean room may deleteriously affect work being conducted therein. The laminate has a high rate of water vapour transmission, thus providing a comfortable garment, blocks transmission of bacteria and submicron size particles, sheds particles, and does not itself form particles. The laminate comprises a layer of porous polymeric film adhesively bonded by a conductive adhesive to a textile fabric layer. The preferred porous polymeric film is of expanded polytetrafluoroethylene. The preferred adhesive is a solvent based isocyanate-cured polyester adhesive containing electrically conductive carbon particles in sufficient amount to render the composite as a whole static electric charge dissipative.

Inventors

  • 👤 Samuel J. Brinton
  • 👤 James L. Manniso

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 21:34
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B5/18; B32B7/00; B32B7/04; B32B7/12; B32B7/14; D; D06; D06N; D06N3/00; D06N3/04; D06N3/047; B32B2264/00; B32B2264/10; B32B2264/107; B32B2264/108; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2307/00; B32B2307/20; B32B2307/202; B32B2437/00

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 30 words
A composite article comprising a layer of porous polymeric film and a layer of textile fabric characterised by a layer of electrically conductive adhesive between said film and fabric layers.
Claim 2
Dependent Claim 30 words
A composite article comprising a layer of porous polymeric film and a layer of textile fabric characterised by a layer of electrically conductive adhesive between said film and fabric layers.
Claim 3
Dependent Claim 18 words
A composite article according to claim 1, characterised in that the porous polymeric film layer comprises expanded polytetrafluoroethylene.
Claim 4
Dependent Claim 29 words
A composite article according to claim 1 or claim 2 characterised in that the electrical conductive adhesive layer is in the form of a spaced pattern of continuous lines.
Claim 5
Dependent Claim 19 words
A composite article according to any preceding claim characterised in that the adhesive contains particles of a conductive metal.
Claim 6
Dependent Claim 17 words
A composite article according to any preceding claim characterised in that the adhesive contains conductive carbon particles.
Claim 7
Dependent Claim 24 words
A composite article according to any preceding claim characterised in that an additional textile fabric layer is adhesively bonded to the porous polymeric film.
Claim 8
Dependent Claim 23 words
A composite article according to any preceding claim characterised in that the adhesive consists essentially of an organic solvent based isocyanate-cured polyester adhesive.
Claim 9
Dependent Claim 37 words
A composite article according to claim 5 characterised in that the carbon particles are a furnace carbon black of effective surface area as measured by nitrogen surface absorption methods of at least about 850 m 2 /g.
Claim 10
Dependent Claim 14 words
An article of clothing manufactured from the composite article claimed in any preceding claim.

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