Dense polytetrafluoroethylene articles
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United States of America Patent
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Dec 20, 1994
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N/A
app pub date -
Aug 19, 1992
filing date -
Aug 19, 1992
priority date (Note) -
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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.
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