| 摘要 |
PURPOSE:To disturb orientation properties so as to prevent a crack from being generated in the moldings by compressing molding material, fluidizing and filling it into the cavity between both molds and thereafter allowing one part of the molding material in the fluidized terminal part to escape from this cavity. CONSTITUTION:The large-sized moldings e.g. such as a bathtub are produced in the space (a cavity 4) between a top force 2 and a bottom force 3. As molding material 6, for example, unsaturated polyester resin molding material with which fibrous reinforced material, etc., are blended is utilized. When the molding material is compressed by the top force 2 and the bottom force 3, this molding material 6 is fluidized and filled into the cavity 4 between both molds. In such a way, one part 61 of the fluidized terminal part of the molding material 6 fluidized and filled into the cavity 4 is allowed to escape from the cavity 4. Therefor a recessing part 31 is formed in the bottom force 3 in order to allow the terminal part of the fluidized molding material 6 to escape from the cavity 4. When the bathtub is molded as the moldings, the recessed part 31 is provided to the part wherein the top edge part of the bathtub is molded. Further when a plurality of molding materials 6 are compressed and molded, the recessed part 31 is preferably formed to the confluent point of these molding materials 6. |
