Zero runout counter-rotating film extruder
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United States of America Patent
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-
May 22, 1984
Grant Date -
N/A
app pub date -
Nov 19, 1981
filing date -
Nov 19, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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Cited Art Landscape
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