Adjustable die face pelletizer

Details Adjustable die face pelletizer Adjustable die face pelletizer

1975-02-26

1976-08-10

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

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

Temperature control

241 822, 241 827, 241 891, 425311, 425466, 425376, B29F 308, B29F 306

Patent

active

039738906

ABSTRACT:
The cutter used with a cylindrically shaped die plate means on a thermoplastic extruder is rotatable about the axis of the die plate and has a plurality of radially projecting blades that extend longitudinally and sweep across the downstream face of the die plate means as the cutter rotates severing extruded heat-plastified material into pellets. The blades form continuous longitudinal channels within which the pellets collect as the cutter rotates. The cutter is enclosed to permit pellet treatment fluid to flow longitudinally over the cutter and flush the pellets from the channels as soon as the pellets are severed. The die plate means comprises a pair of nested die plates mounted for selective positioning relative to one another. In one relative position, the orifices in the plates are essentially aligned to offer minimum constriction to the extrusion of heat-plastified material through the orifices. Adjusting means is provided to selectively change the relative position of the die plates to maintain a substantially constant pressure of heat-plastified material upstream of the die plate means.

REFERENCES:
patent: 2162647 (1939-06-01), Sizer
patent: 2252900 (1941-08-01), Shafer
patent: 3316590 (1967-05-01), Rettig
patent: 3685376 (1972-08-01), Levine et al.

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