Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – To form particulate product
Patent
1982-02-16
1983-11-01
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
To form particulate product
264 8, 425 8, 425185, 425232, 425314, B28B 1116
Patent
active
044129645
ABSTRACT:
Uniform pellets of thermoplastic material are formed by centrifugally expressing strands of heated material from orifices on the rim of a hollow rotor and severing the strands with a linearly moving endless blade at a selected radial distance from the rim. The severed pellets pass in a tangential path through a cooling spray at the entrance to a pellet outlet duct. The severing blade is mounted on a bracket for movement to and from the severing position and for adjustment radially and circumferentially of the rotor axis. Two blade assemblies are employed alternately so that blade replacement may be accomplished without interrupting operation. Downstream from the outlet duct an auxiliary knife-gate is employed adjacent a scrap duct and is movable from a severing position to a scrap duct closing position.
REFERENCES:
patent: 216461 (1879-06-01), Ruger
patent: 2090095 (1937-08-01), Bainbridge
patent: 2215435 (1940-09-01), Hale
patent: 2775788 (1957-01-01), Andrew
patent: 3358323 (1967-12-01), Chisholm
patent: 3424832 (1969-01-01), Chisholm
patent: 3483281 (1969-12-01), Chisholm
Layfield James D.
Todd David B.
Baker Perkins Inc.
Woo Jay H.
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