Pelletizer

Details Pelletizer Pelletizer

1974-12-24

1977-07-26

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Means responsive to abnormal condition completely stop...

425145, 425146, 425313, 264143, B29F 306

Patent

active

040380025

ABSTRACT:
A vertical underwater type pelletizer-cutter apparatus utilizing a hydraulic suction force for pelletization of thermoplastic polymers comprising a nozzle portion having a plurality of nozzles through which a thermoplastic polymer in a melt state is extruded in strands, an injector portion having a plurality of injectors through which the strands are introduced with water, a cooling portion comprising a plurality of guide tubes through which the strands pass together with said water which cools and solidifies the same and a cutter portion which cuts the cooled and solidified strands into pellets, wherein means are provided for monitoring the pressure at the space in the upper part of the guide tube and for automatically stopping the extrusion of the thermoplastic polymer when the monitoring means detects an abnormal reduction in the pressure.

REFERENCES:
patent: 2738548 (1956-03-01), Kassel
patent: 3265779 (1966-08-01), Gobla et al.
patent: 3436449 (1969-04-01), Treu et al.
patent: 3526926 (1970-09-01), Reid
patent: 3600745 (1971-08-01), Hench
patent: 3689610 (1972-09-01), Nicholson
patent: 3767339 (1973-10-01), Hunkar
patent: 3829263 (1974-07-01), Yao et al.

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