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US 3,942,774 AGranted
Method of and means for effecting redistributive mixing in an extruder
AssigneeBeloit Corporation
InventorNickolas N. Sokolow
Life of this patent
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AssigneeBeloit Corporation
InventorNickolas N. Sokolow
Estimating the term…
Redistributive mixing is effected in an extruder wherein the extruder screw advances thermoplastic material toward and through transfer grooves in a corotative torpedo. The torpedo grooves progressively diminish in cross sectional flow area from inlet ends at the upstream end of the torpedo toward downstream ends running out adjacent to the torpedo tip. Feeder grooves in a complementary passage wall of a stationary discharge head adapter in which the torpedo operates, receive the thermoplastic material transferred and propelled with redistributive mixing action from the torpedo grooves. The passage wall grooves have upstream entry ends aligned with the upstream ends of the torpedo grooves and extend therefrom in progressively increasing cross sectional flow area to downstream ends feeding toward an outlet.
Means for effecting redistributive mixing in an extruder including a barrel within which a helical extruder screw rotates to advance thermoplastic material toward a corotative torpedo having a downstream end portion and operating within a generally complementary wall defining a passage in a stationary discharge head at the downstream end of the barrel and leading into a small diameter orifice outlet, the improvement comprising:
A method of effecting redistributive mixing in an extruder having a barrel within which a helical extruder screw rotates to advance thermoplastic material toward a corotative torpedo within a complementary wall which defines a passage in a stationary discharge head at the downstream end of the barrel, the passage leading into a smaller diameter orifice outlet, the steps comprising:
Dependencies are inferred from the claim text.