Rotational plastic compression molding apparatus

Details Rotational plastic compression molding apparatus Rotational plastic compression molding apparatus

1983-04-01

1988-10-11

Lowe, James

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Molding pressure control means responsive to pressure at...

264 23, 264 405, 2642976, 264310, 425150, 4251748R, 425348R, 425350, 425438, 425453, 425457, 425809, 425DIG201, B29C 4358, B29C 4304

Patent

active

047767820

ABSTRACT:
A rotational plastic compression molding apparatus including a plurality of circumferentially spaced female molds and a plurality of circumferentially spaced male molds cooperating respectively with the plurality of the female molds. The female molds and the male molds are rotated in synchronism and thus moved round successively through a material loading zone, a compression molding zone and an article discharge zone. In the material loading zone and the article discharge zone, each said female mold and each corresponding mold are maintained in a spaced-apart inoperative relation, and in the compression molding zone, they are maintained in an approaching operative relation to define a mold space therebetween. In the material loading zone, a heat-melted plastic material is loaded in the female molds, and in the article discharge zone, the compression-molded plastic article is discharged from between each said female mold and each corresponding male mold.

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