Process for tubular water-bath thermoplastic films

Details Process for tubular water-bath thermoplastic films Process for tubular water-bath thermoplastic films

B - Operations, Transporting

29

D

18/790

B29D 7/06 (1980.01) B29D 23/03 (1980.01)

Patent

CA 1090972

ABSTRACT Substantial and commercially important increases in thermoplastic film production rates without adversely affecting film quality are obtained in a tubular water film process. The improvements comprise modifications in the die lip, in the mandrel air (fluid) slot affecting the cooling gas velocity, and in the upper bubble pressure control.

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