| 摘要 |
PURPOSE:To facilitate removal of a product and to improve productivity by pouring hard polyurethane foam raw material in a plastic film in molds, taking it out at a stage of finishing its expansion, and separating the film. CONSTITUTION:Plastic films 2A, 2B of a shape similar to those of separable lower mold 1A and upper mold 2B having a product shape are installed in the molds 1A and 2B, a hard polyurethane foam raw material 3A is poured in a plastic film 2A in the molds, the molds 1A and 2B are closed and clamped. The molds are opened at a stage of finishing expansion of the material 3A due to foaming, and polyurethane foam 3B is taken out from the molds together with the films 2A, 2B. Then, when the films 2A and 2B are separated, a hard polyurethane foam molded form 3B can be obtained. |
