Apparatus and method for molding articles

Details Apparatus and method for molding articles Apparatus and method for molding articles

2006-01-24

2006-01-24

Davis, Robert B. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

C425S116000, C425S129100, C425S130000, C425S546000, C425S812000, C425S81700C

Reexamination Certificate

active

06988878

ABSTRACT:
A first injection mechanism of an apparatus for molding articles injects coating material into a cavity defined in a clamped mold, thereby forming a predetermined coating on the inner surface of the cavity. After the coating material is injected into the cavity, a decompression mechanism lowers the pressure in the cavity through at least one vent. After the coating is formed on the inner surface of the cavity, a second injection mechanism injects molding material into the cavity. When the pressure in the cavity is being lowered, an opening-closing mechanism opens the vent. Before or during the injection of the molding material, the opening-closing mechanism closes the vent.

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