Coextrusion multi-layer tubular film

Details Coextrusion multi-layer tubular film Coextrusion multi-layer tubular film

1984-11-23

1987-02-17

Ives, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428516, 2641761, B32B 2732, B29D 900, B65D 6540

Patent

active

046439285

ABSTRACT:
A coextrusion multi-layer tubular film comprising: an outer layer comprises a linear ethylene .alpha.-olefin copolymer having a density of from 0.900 to 0.945 gram per cubic centimeter; and an inner layer made of (i) a polypropylene-based resin or (ii) a resin composition comprising from 60 to 98% by weight of a polypropylene-base resin and from 40 to 2% of an ethylene .alpha.-olefin copolymer having a density of from 0.850 to 0.945 gram per cubic centimeter; the ratio of said outer layer to said inner layer being from 50:50 to 97:3.

REFERENCES:
patent: 3937758 (1976-02-01), Castagna
patent: 4434264 (1984-02-01), Ficker

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