Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,...
Patent
1991-10-17
1994-01-25
Ryan, Patrick J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
428422, 428364, 256184, D02G 300
Patent
active
052814750
ABSTRACT:
This invention provides for a continuous PTFE fiber having on its surface a substantially round profile and a single spiralling seam formed from a continuous sheet of polytetrafluoroethylene which is helically rolled and self-adhered. The PTFE sheet may include microporous PTFE as well as expanded microporous PTFE. The PTFE sheet may be filled with particulate fillers or coated with polymeric coatings prior to the formation of the inventive fiber. The PTFE sheet may be used to contain various filamentary or sheet-like elements with the inventive fiber.
The method for producing the inventive fiber is also disclosed.
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"Expanded PTFE Fiber and Fabric Technology for Liquid and Gas Filtration", M. E. Johnson, Journal of Industrial Fabrics, vol. 5, pp. 33-39 (Summer 1986).
Hollenbaugh, Jr. Donald L.
McGregor Gordon L.
Minor Raymond B.
Eduards Newton
Ryan Patrick J.
Samuels Gary A.
W. L. Gore & Associates, Inc.
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