Porous film

Details Porous film Porous film

1994-05-27

1995-04-11

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

2642888, 521182, 521 97, D02J 106, C08J 900

Patent

active

054058872

ABSTRACT:
A breathable, hydrolyzable, porous film having long-term stability in mechanical properties which is obtained by the process comprising adding from 40 to 250 parts by weight of a finely-powdered filler having an average particle size of from 0.3 to 4 .mu.m to 100 parts by weight of a polylactic acid-based resin composition comprising from 80 to 95% by weight of polylactic acid or a lactic acid-hydroxycarboxylic acid copolymer and from 5 to 20% by weight of a plasticizer comprising a citric acid ester, melting and film-forming the resultant mixture, and successively stretching the thus-obtained film 1.1 times or more at least in the direction of the axis; and which is consequently useful as a material for leakproof films of sanitary materials such as a paper diaper and packaging materials, and does not accumulate as wastes because of hydrolyzability in the natural environment in the case of being abandoned after use.

REFERENCES:
patent: 4766182 (1988-08-01), Murdock
patent: 5210108 (1993-05-01), Spinu et al.
patent: 5223546 (1993-06-01), Morita et al.
patent: 5238968 (1993-08-01), Morita et al.
patent: 5340646 (1994-08-01), Morita et al.

Affiliated with

Also associated with

Rating

Porous film does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1538871