Method and apparatus for cleaning thermoplastic material for reu

Details Method and apparatus for cleaning thermoplastic material for reu Method and apparatus for cleaning thermoplastic material for reu

1990-09-20

1992-05-05

Gorski, Joseph M.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

209 3, 209 12, 241 17, 241 19, 241 20, 241 23, 241 24, B02C 2318, B02C 2320

Patent

active

051100550

ABSTRACT:
Apparatus and a method for its use in cleaning comminuted thermoplastic material for reuse in manufacture of molded plastic products. Batches of plastic including adherent label materials and adhesives are agitated by a rotor until frictionally heated to a predetermined temperature. A flow of air is used to carry away loosened labels and adhesives. A small amount of water is introduced as a spray to dissolve adhesives and soften remaining label materials further, while loosened pieces continue to be removed in a stream of air. Thereafter, remaining adherent particles are removed in an aspirator providing a multi-stage cascade through counter-currents of air, and the particle-carrying air is then cleaned in a cyclone separator.

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