Heat-sealable polypropylene films

Details Heat-sealable polypropylene films Heat-sealable polypropylene films

1979-08-23

1981-10-27

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

156229, 15624411, 15624424, 15624427, 2642107, 426127, 428500, 428515, 428523, 428910, B32B 2732, B32B 3114

Patent

active

042974151

ABSTRACT:
A heat-sealable oriented polypropylene film comprising a base oriented polypropylene film having on one surface a layer of a random propylene/ethylene copolymer (ethylene content 2-6% by weight) and on the other surface a predominantly linear random copolymer of ethylene and a further alpha olefin having at least three carbon atoms per molecule (for example propylene and butene-1) the further alpha olefin content being 6-40% by weight. The film is particularly useful for packaging merchandise on horizontal form-fill-seal packaging machines.

REFERENCES:
patent: T941020 (1975-12-01), Young
patent: T955009 (1977-02-01), Lansbury
patent: 3397101 (1968-08-01), Rausing
patent: 3891008 (1975-06-01), D'Entremont
patent: 4147827 (1979-04-01), Breidt
patent: 4252851 (1981-02-01), Lansbury

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