Stock material or miscellaneous articles – Pile or nap type surface or component – Nap type surface
Patent
1976-08-06
1977-05-24
McCamish, Marion E.
Stock material or miscellaneous articles
Pile or nap type surface or component
Nap type surface
26 51, 28 7216, 28 7217, 28DIG1, 55527, 55528, 55DIG16, 210507, 210508, 428229, 428245, 428260, 428265, 428422, 26 71, 26 72, B01D 3904, B01D 3916
Patent
active
040256790
ABSTRACT:
The product of the present invention is a fabric woven from oriented polytetrafluoroethylene (PTFE) strands, in which the strands of the weave are interconnected by a multiplicity of fine PTFE fibrils. To produce this fabric, consisting entirely of PTFE, a woven PTFE fabric is heated substantially unrestrained to a temperature above the crystalline melt point of PTFE and stretched. Alternatively, a woven PTFE fabric may be impregnated with other fluorocarbon polymers, heated substantially unrestrained to a temperature above the crystalline melt point of PTFE, and subsequently stretched, thereby generating a multiplicity of fine fibrils interconnecting the weave.
REFERENCES:
patent: 2578523 (1951-12-01), Llewellyn
patent: 3542632 (1970-11-01), Eickhoff
Campbell J. S.
McCamish Marion E.
Uebler E. A.
W. L. Gore & Associates, Inc.
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