Biaxial film process and rotary apparatus therefor

Details Biaxial film process and rotary apparatus therefor Biaxial film process and rotary apparatus therefor

B - Operations, Transporting

29

D

18/526

B29D 7/24 (1980.01)

Patent

CA 1111219

ABSTRACT OF THE DISCLOSURE In a biaxial blown tube synthetic resin film making apparatus, the extruder die, mandrel, rehat ovens and hot air ring are caused to rotate and oscillate about a stalk moving coaxially therethrough to provide a flatter, more uniform film.

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