Method of preparing moldable plastic and additive agents

Details Method of preparing moldable plastic and additive agents Method of preparing moldable plastic and additive agents

1974-12-19

1976-01-06

Jenkins, Robert W.

B29B 104

Patent

active

039306402

ABSTRACT:
A method is disclosed for preparing mixtures of moldable plastic and a suitable amount (generally a minor amount) of additive material to be dispersed throughout the moldable plastic, which mixtures are intended for subsequent use in a plastic molding process, by a method which permits separation or re-classification of the mixture into its moldable plastic and additive material components in the event that the mixture turns out to be incorrect or obsolete. The method includes the steps of obtaining small pellets of a moldable plastic having a first shape, these pellets being substantially free of the additive material. These small pellets of moldable plastic are then mixed with small pellets of moldable plastic into which has been incorporated one or more additives, these pellets having a second shape which is classifiably different from the shape of the other plastic pellets.

REFERENCES:
patent: 2464746 (1949-03-01), Gerling
patent: 2904827 (1959-09-01), Kaiser
patent: 2918701 (1959-12-01), Hull
patent: 3509247 (1970-04-01), Perrone

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