Dry fibrillated PTFE film and its method of manufacture

Details Dry fibrillated PTFE film and its method of manufacture Dry fibrillated PTFE film and its method of manufacture

2007-05-01

2007-05-01

Eashoo, Mark (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C264S331140

Reexamination Certificate

active

10739601

ABSTRACT:
A finished PTFE film is produced by first preparing an extruded, dried, unsintered and unexpanded PTFE feed film, and then reducing the thickness of the feed film by more than 20% by passing it with back tension through a roll nip.

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