Process for making granulate of polymeric material

Details Process for making granulate of polymeric material Process for making granulate of polymeric material

1998-12-02

2000-04-25

Gravini, Stephen

Drying and gas or vapor contact with solids

Process

Congealing or thickening

34383, 34384, 34388, F26B 506

Patent

active

060529199

ABSTRACT:
In a process for making plastic granulate, a polymeric material is plastifyed into a plastic mass which is divided into single plastic strands. After pressing the plastic strands in a stream of cooling liquid, the plastic strands are shredded in the cooling liquid into granules, thereby forming a dispersion which is conveyed through a first conduit to a separator. The dispersion is concentrated in the separator by withdrawing a portion of cooling liquid, and subsequently transported to a dryer along a second conduit which is longer than the length of the first conduit. In the dryer, the cooling liquid is separated from the granulate.

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G. Gotz: Spin Away-Dryer Zentrifugaltrockner zum Entwassern von Kunststoffgranulaten, p. 1180/1182, GAK Dec. 1972.
Dissertation, entitled Hydraulische Forderung von Eis zum Kuhlen von Bergwerken, Technical University of Hannover, 1991.

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