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US 4,564,559 AGranted
Oriented multi-layer heat sealable film
AssigneeMobil Oil Corporation
InventorsJohn R. Wagner, Jr., Melvil B. Clauson
Life of this patent
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Abstract
An oriented multi-layer heat sealable film structure comprising a polyolefin film substrate, a layer of a blend of LLDPE and polypropylene, a primer layer on said blend layer and a heat sealable layer on said primer layer.
Claims9
A heat sealable multi-layer structure comprising:
- (a) a substrate comprising a polyolefin film;
- (b) a layer on at least one surface of (a), said layer consisting essentially of a blend of (1) a linear low density copolymer of ethylene with a minor proportion of a C.sub.3 -C.sub.10 alpha olefin (LLDPE) and (2) polypropylene;
- (c) a primer coating between layers (b) and (d) on at least one of said layer (b);
- and
- (d) a heat sealable layer on said coating (c) said heat sealable layer being a member selected from the group consisting of a vinylidene chloride polymer and an acrylic polymer.
2 more elements
Dependencies are inferred from the claim text.