| abstract |
(57) [Abstract] [Purpose] A polyurethane foam with a self-skin layer, which has a better appearance, feel and physical properties than when using CFC, without using a CFC or other foaming agent, which is problematic, Manufacture with low material loss and high efficiency. [Structure] A polyurethane material M containing substantially no foaming agent is injected into the cavity 4 of the pressure-reduced molding die 1, Allow to foam and flow. It is preferable to limit the water content in the polyol mixed component of the polyurethane material M to less than 0.4% by weight and reduce the pressure of the cavity 4 to 50 Torr or less. |