Strong, air permeable membranes of polytetrafluoroethylene
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United States of America Patent
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Sep 29, 1998
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N/A
app pub date -
Aug 1, 1996
filing date -
Aug 4, 1995
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Abstract
Microporous membranes are described and characterized as having a morphological microstructure of very highly elongated nodes interconnected by fibrils which form a structural network of voids or pores through the spaces between the nodes and fibrils, which voids or pores extend from one side of the membrane to the other. The membranes are highly uniform in terms of mass per volume, have very high strength and a very open microstructure.
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