Stretched multilayer polypropylene film

Details Stretched multilayer polypropylene film Stretched multilayer polypropylene film

1985-07-11

1986-04-22

Kittle, John

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428910, B32B 2732

Patent

active

045842396

ABSTRACT:
A stretched multilayer polypropylene film is described, comprising a stretched crystalline polypropylene layer and a layer of a composition (Composition B) laminated on at least one side of said polypropylene layer, wherein the composition B comprises a homo- or copolymer composed mainly of ethylene, propylene or butene-1 and having a melting point of 150.degree. C. or less, and a vinylcycloalkane polymer in an amount of 0.05 wt ppm to 10 wt % calculated as a vinylcycloalkane unit. This multilayer film is greatly improved in optical properties such as excellent see-through properties without deteriorating its good heat sealability. Thus it is very useful for wrapping.

REFERENCES:
patent: 4230767 (1980-10-01), Isaka et al.
patent: 4293608 (1981-10-01), Isaka et al.
patent: 4294889 (1981-10-01), Hashimoto
patent: 4339494 (1982-07-01), Weiner

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