Drying plastics

Details Drying plastics Drying plastics

1974-07-01

1976-10-19

Sprague, Kenneth W.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 48, 219497, F26B 314

Patent

active

039862690

ABSTRACT:
Particles, e.g. granules, of plastic materials are dried by blowing air heated to 0.5.degree. - 5.degree. C below the sticking temperature of the granules through a bed of the particles. The air temperature is controlled by means of a proportional controller having integral and derivative terms.

REFERENCES:
patent: 2641848 (1953-06-01), Wilson
patent: 2748330 (1956-05-01), Bergen
patent: 2830245 (1958-04-01), Davis et al.
patent: 3111398 (1963-11-01), Jones
patent: 3186102 (1965-06-01), Brociner et al.
patent: 3378245 (1968-04-01), Frank
patent: 3585481 (1971-06-01), Steghart
patent: 3722462 (1973-03-01), Pohler et al.

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