Back to results
US 4,536,549 AGranted
Heat-sterilizable polyolefin compositions and articles manufactured therefrom
AssigneeEl Paso Polyolefins Company
InventorsKiyoshi Hattori, John H. Myers
Life of this patent
Estimating the term…
Abstract
Heat-sterilizable films are made from a polymer blend of about 10 to about 60 wt % random propylene-ethylene copolymer containing from about 1 to about 6 wt % ethylene-derived units and about 40 to about 90 wt % linear low density polyethylene. The films are especially useful in the manufacture of collapsible parenteral solution bags and overwraps.
Claims9
A resin composition for use in the manufacture of sterilizable, heat sealable, collapsible film bags, which resin composition consists essentially of a blend of:
- (a) from about 10 to about 60 wt. % of a random copolymer of from about 1 to about 6 wt. % ethylene and of from about 94 to about 99 wt. % propylene;
- (b) from about 40 to about 90 wt. % of a linear low density polyethylene produced by copolymerization of ethylene with at least one C.sub.4 -C.sub.18 alpha-olefin comonomer and having a density between about 0.915 and about 0.940 gm/cc.
Dependencies are inferred from the claim text.