Process for producing microporous PTFE

Details Process for producing microporous PTFE Process for producing microporous PTFE

1995-06-07

1997-10-14

Gallagher, John J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 41, 264 454, 264127, 521 56, 521145, 521919, B32B 326

Patent

active

056770472

ABSTRACT:
A substantially cylindrical bar of microporous PTFE is non-fibrillated and incorporates pores within any cylindrical surface within the bar centred about the central longitudinal axis of the bar that are of substantially uniform size and are substantially uniformly distributed within that surface. The process for producing such a bar includes the step of applying a substantially radial compressive force to pre-heated and cooled granules of PTFE and subsequently re-heating and cooling the compressed granules, while a film of non-fibrillated, microporous PTFE is formed from the cooled bar, the plane of the film being perpendicular to the direction of the radial compressive force whereby the pores within any plane substantially perpendicular to the thickness of the film are of substantially uniform size and are substantially uniformly distributed within that plane and all such parallel planes.

REFERENCES:
patent: 3015855 (1962-01-01), Merkel
patent: 3753566 (1973-08-01), Gore
patent: 5514231 (1996-05-01), Thomas

Affiliated with

Also associated with

Rating

Process for producing microporous PTFE does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing microporous PTFE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing microporous PTFE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1553548