| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane foaming mold of a polyurethane foam for enabling the polyurethane raw material charged to the bottom surface of the lower mold of a foaming mold to arrive at the corner parts formed by crossing the wall surfaces erected on the bottom surface of the lower mold before the viscosity of the polyurethane raw material is increased by foaming reaction by eliminating the point at issue of a prior art. SOLUTION: The lower mold 30 of the foaming mold for molding the polyurethane foam is provided with a flow speed adjusting part for making the flow of the central part of the polyurethane raw material flowing to corner parts of the lower mold 30 faster than the flow of the outside raw material when the polyurethane raw material charged on the central bottom surface 33 of the lower mold 30 flows to spread. The flow speed adjusting part as an embodiment is ridge parts 50 arranged to the central bottom surface 33 in a truncated chevron shape on a plane view toward the corner parts formed by the crossing part where the wall surfaces 221 and 222 erected on the lower mold 30 cross each other and the central bottom surface 33. COPYRIGHT: (C)2008,JPO&INPIT |
