Process for manufacturing a metallized polyolefin film and resul

Details Process for manufacturing a metallized polyolefin film and resul Process for manufacturing a metallized polyolefin film and resul

1988-02-16

1989-12-19

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

427223, 427225, 428349, 428354, 428461, 428910, 428913, C09J 702, B32B 1508

Patent

active

048882372

ABSTRACT:
A process for manufacturing a metallized polymeric film to provide a structure possessing high metal-to-film adhesion and little, if any, tendency toward metal fracture is disclosed. In one embodiment of the process, at least one polyolefin layer is provided to a film which includes a substantially isotactic polymer having a degree of atacticity of no more than about 6%. The isotactic component is preferably polypropylene homopolymer. Other components include up to about 34% of an adhesive-promoting component which can be a C.sub.2 -C.sub.4 polymer, including homo-, co-, and terpolymers having C.sub.2 -C.sub.4 carbon chains, and a second isotactic polymer having a degree of atacticity of from about 6% to about 15%. The surface of the polyolefin layer is subjected to flame treatment followed by vacuum metallization of this surface (preferably with aluminum).

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