Process for manufacturing a metallized polyolefin film and...

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

B - Operations, Transporting

32

B

117/90.2

B32B 15/08 (2006.01) B29C 59/08 (2006.01) C23C 14/20 (2006.01)

Patent

CA 1337856

A process for manufacturing a metallized, flexible film of a polymeric material to provide a structure possessing high metal-to-film adhesion and little, if any, tendency toward metal fracture is disclosed. At least one polyolefin layer comprising a substantially isotactic polymer having a degree of atacticity of nomore than 6% is subjected to flame treatment followed by vacuum metallization of this surface (preferably with aluminium). The isotactic component is preferably polypropylene homopolymer. Other components include up to about 34% of an adhesive-promoting component which can be a C2 to C4 polymer, including a homo-, co-, or terpolymer and a second isotactic polymer having a degree of atacticity from 6% to 15%.

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