Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1985-11-29
1988-10-18
Buffalow, Edith
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
428349, 428355, 428516, B32B 102, B32B 2708
Patent
active
047786973
ABSTRACT:
This invention pertains to the use of polymer blends in making multiple layer films. In some layers, the elastomer or ethylene-based copolymer is blended with polypropylene, and in some layers, with polyethylene. Typical films have two to five layers. In multilayer films, at least one layer of a blend of polyethylene, preferably high density polyethylene, with elastomer and/or ethylene-based copolymers. Another layer is polypropylene blended with elastomers and/or ethylene-based copolymers. The films may have as few as two layers, one each having polypropylene and polyethylene, preferably high density polyethylene. Additional layers may be added to the two or three layer films taught herein, for variety of purposes.
REFERENCES:
patent: 4125662 (1978-11-01), Weiner et al.
patent: 4147827 (1979-04-01), Breidt et al.
patent: 4169910 (1979-10-01), Graboski
patent: 4210686 (1980-07-01), Gajewski et al.
patent: 4479989 (1984-10-01), Mahal
Czuba Leonard F.
Gehrke Russell P.
Genske Roger P.
Johnson, Jr. Richard E.
Kim Yong J.
American National Can Company
Audet Paul R.
Baxter Travenol Laboratories Inc.
Buffalow Edith
Wilhelm Thomas D.
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