Apparatus for the production of encapsulated foaming concentrate

Details Apparatus for the production of encapsulated foaming concentrate Apparatus for the production of encapsulated foaming concentrate

1996-05-03

1997-03-11

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Means forming from bulk and downstream severing means

264142, 264179, 264180, 425 67, 425308, 425DIG230, B29B 906

Patent

active

056098928

ABSTRACT:
The present invention is directed to apparatus for compounding and pelletizing of chemical foaming agents in a high melt resin carrier and producing unique, uniform encapsulated and pelletized chemical foaming concentrates. More specifically, the present invention is directed to the compounding, encapsulating and pelletizing in a high melt resin carrier a highly loaded concentration (5 to 70 wt %) of foaming agents which include an endothermic foaming agent, an exothermic foaming agent or hybrid combinations of these two such that when incorporated into a thermoplastic resin to produce a foamed product will chemically react to form carbon dioxide, nitrogen or hydrogen or mixtures thereof as the active foaming gas.

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