Plastic pellet cleaning apparatus and method for optical lense m

Details Plastic pellet cleaning apparatus and method for optical lense m Plastic pellet cleaning apparatus and method for optical lense m

1980-05-01

1981-07-28

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51313, 264162, B24B 3100

Patent

active

042803039

ABSTRACT:
A plastic pellet cleaning apparatus and method for producing plastic pellets for optical lense molding is provided. The plastic is melted and molded utilizing an injection molding process to produce optical lenses which will be used for a variety of applications. The apparatus and method disclosed will produce plastic pellets substantially clean of contaminants which would otherwise cause microscopic defects in the optical lenses produced therefrom. Generally, optical lenses produced which have these defects are rejected.

REFERENCES:
patent: Re22358 (1943-08-01), Arpin
patent: 121847 (1871-12-01), Chichester
patent: 3187473 (1965-06-01), Ruppe

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