Underwater pelletizer
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United States of America Patent
Stats
-
Nov 17, 1981
Grant Date -
N/A
app pub date -
Jan 10, 1979
filing date -
Jan 10, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A conventional underwater plastic pelletizer of the type using a rotatable knife hub is improved by securing to the knife hub a diverter plate for confining the flow of inlet water to the region adjacent the face of the die plate. The cutting knives are mounted on the rotating hub at a rake angle with respect to the hub center and tilted at an angle with respect to the surface of the die plate so as to effectively pull a cut pellet away from an extruded plastic strand, and the die plate is heated by an organic heat exchange fluid. The result is a substantial reduction in orifices frozen off by cooled polymer.
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