Process of making porous films or sheets

Details Process of making porous films or sheets Process of making porous films or sheets

1995-10-06

1997-11-04

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

2642104, 2642106, 26421119, 264344, 264564, B29C 4778, B29C 5504, B29C 5512, B29C 6720

Patent

active

056836341

ABSTRACT:
A porous film or sheet including a resin composition mainly of an ultra-high molecular weight polyethylene having a viscosity-average molecular weight of not less than 500,000, and having a thickness of 10 to 100 .mu.m, an air permeability of 20 to 2,000 sec/100 cc, a porosity of 15 to 80%, a pin puncture strength (per 25 .mu.m of film thickness) of not less than 120 g, a thermal-shut down temperature of 90.degree. to 150.degree. C. and a heat puncture temperature of not less than 160.degree. C., and a process for producing the same.

REFERENCES:
patent: 4237083 (1980-12-01), Young et al.
patent: 4731304 (1988-03-01), Lundquist et al.
patent: 4833172 (1989-05-01), Schwarz
patent: 4873034 (1989-10-01), Kono et al.
patent: 5240655 (1993-08-01), Troffkin et al.
117 440 May 1993 (Mitsubishi Kasei Corp.) Abstract. 254 806 (Mitsubishi Chem. Ind. KK.) Nov. 1987 Abstract.

Affiliated with

Also associated with

Rating

Process of making porous films or sheets 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 of making porous films or sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of making porous films or sheets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1830602