Zero runout counter-rotating film extruder

Details Zero runout counter-rotating film extruder Zero runout counter-rotating film extruder

B - Operations, Transporting

29

C

18/737

B29C 47/24 (2006.01) B29C 47/00 (2006.01) B29C 47/22 (2006.01)

Patent

CA 1172817

ZERO RUNOUT COUNTER- ROTATING FILM EXTRUDER ABSTRACT OF THE DISCLOSURE This relates to a die assembly for extruding tubular casing films wherein there are counter-rotating die members. One of the die members is mounted for shifting relative to its base under the influence of hydrodynamic pressures of the flowing extrudate so as to be self- centering relative to the other die member. This provides for a high shear cylindrical area leading into the die orifice which is of uniform thickness and which will provide for uniform fiber orientation due to the zero runout of the rotating dies.

411797

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