Oriented polypropylene with linear low density poly-ethylene cop

Details Oriented polypropylene with linear low density poly-ethylene cop Oriented polypropylene with linear low density poly-ethylene cop

1982-02-09

1985-03-19

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

15624411, 428 35, 428516, 428349, 526 96, B32B 2708

Patent

active

045059691

ABSTRACT:
The present invention relates to heat sealable laminar thermoplastic films which may be heat sealed over a wide range of temperatures. The resultant heat seals exhibit a high heat seal strength. Such laminar structures comprise at least two layers of thermoplastic film, one of the layers being an oriented base layer and the other layer a heat sealable skin layer. Preferably the base layer is an alpha olefin such as polypropylene or copolymers thereof and the skin layer is preferably a linear, low-density polyethylene copolymer, comprising ethylene which has been copolymerized with another alpha olefin in the presence of a stereospecific catalyst.

REFERENCES:
patent: 4147827 (1979-04-01), Breidt et al.
patent: 4197150 (1980-04-01), Breidt et al.
patent: 4303709 (1981-12-01), Olson

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