Cling film composition of olefin polymer blend

Details Cling film composition of olefin polymer blend Cling film composition of olefin polymer blend

1980-09-23

1982-01-19

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525240, C08L 2306, C08L 2308, C08L 2320, C08L 3104

Patent

active

043118089

ABSTRACT:
A film forming composition was prepared which comprises a homogeneous mixture of (a) from 2% to 10% by weight of polyisobutylene having a Staudinger molecular weight of from 3,000 to 50,000; (b) from 3% to 20% by weight of an ethylene-propylene copolymer rubber having a melt index of from 0.2 to 2.0 dg/min. and an ethylene/propylene copolymerization ratio of from 30/70 to 70/30 and (c) the remainder of the mixture being an olefin polymer selected from polyethylene having a density of from 0.915 to 0.930 gm/cc and a melt index of from 0.3 to 5.0 dg/min. and an ethylene-vinyl acetate copolymer wherein vinyl acetate comprises up to 20% of the copolymer. Film prepared from the composition exhibited improved cling properties down to at least -40.degree. C.

REFERENCES:
patent: 3321427 (1967-05-01), Tyran
patent: 3682767 (1972-08-01), Britton et al.
patent: 3932563 (1976-01-01), Argurio et al.
patent: 4113804 (1978-09-01), Cotten et al.

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