Oriented polypropylene with linear low density polyethylene...

Details Oriented polypropylene with linear low density polyethylene... Oriented polypropylene with linear low density polyethylene...

B - Operations, Transporting

32

B

154/140, 18/783

B32B 27/08 (2006.01) B32B 27/32 (2006.01)

Patent

CA 1157617

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.

316856

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