Process for pelletizing polymer

Details Process for pelletizing polymer Process for pelletizing polymer

1995-04-28

1997-03-18

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

425 67, 425313, B29B 906, A01J 2102

Patent

active

056119836

ABSTRACT:
An improved process for pelletizing thermoplastic material, particularly ultra low melt viscosity thermoplastic polymer, using an underwater pelletizer adapted to prevent extruded material from agglomerating in the pelletizer, which pelletizer comprising a cutting assembly having (1) a shroud fixedly mounted on the outer periphery of the cutting assembly thereby preventing pellets from being trapped between the die face and the cutting assembly; and (2) novel knives contoured to conform in their angular positions to the curvature of the shroud to avoid pellet agglomeration.

REFERENCES:
patent: 3324510 (1967-06-01), Kleeb
patent: 3673298 (1972-06-01), Miler
patent: 4099900 (1978-07-01), Bradbury et al.
patent: 4321026 (1982-03-01), Lambertus
patent: 4529370 (1985-07-01), Holmes et al.
patent: 4621996 (1986-11-01), Hundley, III
patent: 4728275 (1988-03-01), Dilvllo et al.

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