Apparatus and method for producing molded hollow article with filling of foamed plastic thermal insulation, and article produced thereby
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United States of America Patent
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Oct 15, 1985
Grant Date -
N/A
app pub date -
Nov 22, 1982
filing date -
Nov 22, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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Cited Art Landscape
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