Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1992-08-19
1994-12-20
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428 345, 428 346, 428 357, 428 359, 428 365, 428 71, 428219, 428220, B32B 702
Patent
active
053744730
ABSTRACT:
This invention provides a densified previously expanded PTFE article having remnants of a fibril and node structure and a process for producing the article. A PTFE shape is compressed through the application of heat and pressure while the shape itself is under a vacuum, thus forming the densified ePTFE article. The densified PTFE article exhibits increased flexural strength.
A diaphragm containing the densified ePTFE article as one layer is also disclosed.
REFERENCES:
patent: 3953566 (1976-04-01), Gore
patent: 4187390 (1980-01-01), Gore
patent: 4482516 (1984-11-01), Bowman et al.
patent: 4732629 (1988-03-01), Cooper et al.
patent: 4996097 (1991-02-01), Fischer
patent: 5061561 (1991-10-01), Katayama
Connelly, Jr. John M.
Delaney, III William E.
Knox John B.
Ryan Patrick J.
Samuels Gary A.
W. L. Gore & Associates, Inc.
Weisberger Richard P.
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