Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – To form particulate product
Patent
1983-02-09
1984-07-24
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
To form particulate product
425 68, 425313, B29C 1714
Patent
active
044617372
ABSTRACT:
Apparatus for forming pellets from extruded strands of thermoplastic material which includes a liquid-filled tank, an extrusion die face disposed beneath the liquid in the tank, at least one knife blade movable in a direction of movement over the die face to cut pellets from at least one strand of material extruded through an orifice communicating with the die face, a wing extending from the knife blade in a direction opposite the direction of movement of the knife blade and defining a space between the wing and the die face, and means for injecting a purge gas into the space to purge the liquid therefrom. Also disclosed is a method of forming pellets from a strand of thermoplastic material extruded below the surface of a quantity of liquid.
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Plastics World, vol. 36, Jul. 1978, pp. 46 and 47.
Phillips Petroleum Company
Woo Jay H.
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