Polypropylene-polybutylene laminated packaging film with improve

Details Polypropylene-polybutylene laminated packaging film with improve Polypropylene-polybutylene laminated packaging film with improve

1990-05-31

1991-12-24

Buffalow, Edith L.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428349, 428516, 15624411, B32B 702

Patent

active

050751573

ABSTRACT:
A packaging film composition having an improved tear strength comprising a core, which is preferably polybutylene homopolymer or copolymer or a blend of polybutylene with another compatible polymer, said core being coated on one or both sides with a polypropylene homopolymer or copolymer optionally blended with a minor amount of a high melt index polybutylene.

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patent: 4339494 (1982-07-01), Weiner et al.
patent: 4339495 (1982-07-01), Weiner et al.
patent: 4339496 (1982-07-01), Weiner et al.
patent: 4340640 (1982-07-01), Weiner et al.
patent: 4340641 (1982-07-01), Weiner et al.
patent: 4399493 (1982-07-01), Weiner et al.

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