Flat sheet process for production of balanced polyolefin...

Details Flat sheet process for production of balanced polyolefin... Flat sheet process for production of balanced polyolefin...

B - Operations, Transporting

29

C

18/1042

B29C 61/06 (2006.01) B29C 55/14 (2006.01)

Patent

CA 1172820

ABSTRACT OF THE DISCLOSURE A balanced, biaxially oriented polyolefin shrink film is produced using a tenter process by heating the film, stretching the film 7 to 10 times in the transverse direction, cooling the film and then heating and stretching the film 1. 5 to 4 times in the longitudinal direction such that the ratio of the transverse stretch to the longitudinal stretch is greater than 2Ø

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