Process for the production of porous moldings

Details Process for the production of porous moldings Process for the production of porous moldings

1994-12-05

1996-02-27

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Autogenously or by activation of dry coated particles

264 41, B29C 4500

Patent

active

054946298

ABSTRACT:
Porous moldings of ultrahigh-molecular-weight polyethylene obtained by injection molding polyethylenes having an intrinsic viscosity of 500 to 5000 ml/g, a mean particle size of 100 to 1500 .mu.m, and a bulk density of at least 0.35 g/cm.sup.3. The polymer is preferably molded in an injection-molding machine at 160.degree. to 260.degree. C. and an injection pressure of 80 to 150 MPa. The ratio between the flow distance of the material in the injection mold and the wall thickness of the molding is a maximum of 7.5.

REFERENCES:
patent: 3847888 (1974-11-01), Baumgaertner
patent: 4281070 (1981-07-01), Scheetz et al.
patent: 4518552 (1985-05-01), Matsuo et al.
patent: 4876049 (1989-10-01), Aoyama et al.
patent: 4925880 (1990-05-01), Stein
patent: 5037928 (1991-08-01), Li et al.
patent: 5200129 (1993-04-01), Kobayashi et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1676733