Method of shaping polyacrylonitrile film

Details Method of shaping polyacrylonitrile film Method of shaping polyacrylonitrile film

B - Operations, Transporting

29

C

18/1051

B29C 51/04 (2006.01) B29C 51/00 (2006.01)

Patent

CA 1198868

A METHOD OF SHAPING POLYACRYLONITRILE FILM Abstract A biaxially oriented acrylonitrile polymer film at least substantially free of moisture and/or solvent is subjected to a temperature sufficient to permit deformation thereof, whereafter the film is deformed into a predetermined shape and, while so-deformed, is cooled to cause retention of said shape.

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