Continuous polytetrafloroethylene fibers
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United States of America Patent
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Nov 15, 1994
Issued Date -
N/A
app pub date -
Jan 25, 1994
filing date -
Oct 17, 1991
priority date (Note) -
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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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