Process for producing polyurethane-foam product molded integrally with insert and expansion-molding mold for the same
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United States of America Patent
Stats
-
Apr 18, 2006
Grant Date -
Jan 30, 2003
app pub date -
Jul 1, 2002
filing date -
Jul 26, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a process for producing a polyurethane-foam product molded integrally with an insert, wherein a molded body, including a substrate and a polyurethane-foam molded body being molded integrally with the substrate, is produced, the substrate being disposed in an expansion-molding mold as the insert, a fine groove-shaped polyurethane-foam relief groove and a polyurethane-foam adjuster are formed in an end of the substrate and/or a mold surface of the expansion-molding mold which contacts with the substrate. The relief groove communicates with a cavity of the mold. The adjuster communicates with the relief groove, and has a volume larger than that of the relief groove. The relief groove and the adjuster can control the pressure exerted within the cavity. Polyurethane foam, which is formed by the relief groove and the adjuster, adheres to molded product. Therefore, it is possible to obviate the deflashing operation. An expansion-molding mold therefor is also disclosed.
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