Polymeric films

Details Polymeric films Polymeric films

1989-11-02

1990-10-02

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283155, 4283159, 4283179, 428516, 428910, B32B 326, B32B 702

Patent

active

049606379

ABSTRACT:
The invention concerns polymeric films, in particular, but not exclusively, in the form of synthetic paper. The films have a rough surface provided by a blend of a first polymer having a melt flow index of not more than 1 g/10 mins as measured by ASTM D1238/73 (condition L) with at least one polymer chemically incompatible with the first polymer. The first polymer preferably does not flow under these conditions, and the incompatible polymer preferably has a melt flow index of from 4 to 50 g/10 mins under ASTM D1238/73 (condition L). The polymers of each layer are preferably polyolefins. The base layer is of voided polypropylene. The rough surface can provide writeability, or it can be printed or metallized to provide a unique appearance.

REFERENCES:
patent: 4438175 (1984-03-01), Ashcraft et al.
patent: 4632869 (1986-12-01), Park et al.
patent: 4734324 (1988-03-01), Hill
patent: 4741950 (1988-05-01), Liu

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-291557