Oriented polymeric film and process for enhanced orientation...

C - Chemistry – Metallurgy – 08 – J

Patent

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204/91.34

C08J 5/18 (2006.01) B29C 55/02 (2006.01) B29C 61/00 (2006.01) B32B 27/16 (2006.01) C08J 7/18 (2006.01) B29C 71/04 (2006.01)

Patent

CA 1335085

A multilayer heat-shrinkable (oriented) film comprising at least one layer of cross-linkable polymer, said layer (1) (originally) containing a pro-rad agent and (2) being irradiated, both being to an extent sufficient to provide an amount of cross- linking effective to accomplish an increased orientation rate. The presence of both a pro-rad linking agent and irradiation such as electron beam irradiation, in the manufacturing process for making an oriented, i.e. heat-shrinkable, polymeric film results in an amount of cross-linking that is effective to accomplish an increased orientation rate during manufacturing.

574741

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