04546899 is referenced by 33 patents and cites 3 patents.

The molded shell of an article, while still warm from being molded, and while remaining within the mold or fixture in which it has been created, for instance by blow-molding of a parison of polyolefin plastic material into contact with the mold walls, is filled with a fluid, settable foaming plastic material, for instance polyurethane. This may be done by injecting the foaming mixture directly into the cavity of the shell. In this manner time, labor and materials are saved, and the resulting product is characterized by better adhesion of the foamed core to the internal wall surface of the shell.

Title
Apparatus and method for producing molded hollow article with filling of foamed plastic thermal insulation, and article produced thereby
Application Number
6/443789
Publication Number
4546899
Application Date
November 22, 1982
Publication Date
October 15, 1985
Inventor
W Jerry Williams
Owensboro
KY, US
Agent
Cushman Darby & Cushman
Assignee
Omico Plastics
KY, US
IPC
B29D 27/04
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