Method and apparatus for pulverizing polymers

Details Method and apparatus for pulverizing polymers Method and apparatus for pulverizing polymers

1984-09-07

1986-08-26

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With heating or cooling of material

2412601, 425208, 425379R, B02C 1912

Patent

active

046077979

ABSTRACT:
A method and apparatus for pulverizing polymers. The apparatus comprises a hollow barrel within which at least one screw rotates. The interior of the hollow barrel is divided into a plurality of zones. Heating members are associated with a first of these zones and cooling members are associated with at least a second of these zones. Pre-crushing and pulverizing members are also disposed in said second zone. In the method, polymeric material is fed into the first zone of the hollow barrel and is fused therein. The fused material is then conveyed into the second zone wherein it is cooled, pre-crushed and pulverized. The powdered polymeric material is then discharged from said second zone. The method can therefore be effected continuously in a single apparatus.

REFERENCES:
patent: 3382536 (1968-05-01), Fritsch et al.
patent: 3431599 (1969-03-01), Fogelberg
patent: 3551943 (1971-01-01), Staton et al.
Karl-Martin Hess, Maschinen, Verarbeitung und Anwendung, "Kontinuierliches Herstellen von Kunststoff-Beschichtungspulvern"; vol. 64 (1974), Book 2, pp. 54-57.

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