Polymer flow through die

Details Polymer flow through die Polymer flow through die

1978-09-22

1982-05-25

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

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

To form particulate product

264140, 264142, 264338, B29F 301

Patent

active

043316239

ABSTRACT:
Polyolefin resin pellets of greater uniformity of shape and characterized by an almost complete absence of tails are obtained by the use in the pelletizing apparatus of dies which have been coated by a thin layer of finely divided solid lubricant such as molybdenum disulfide or, preferably, graphite applied to the interior surfaces of the die by cross bombardment with a stream or streams of finely divided solid lubricant under pressure.

REFERENCES:
patent: 3060511 (1962-10-01), Parmella
patent: 3100724 (1963-08-01), Rocheville
patent: 3436449 (1969-04-01), Treu et al.

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