| 摘要 |
PURPOSE:To eliminate the needs for coating the inner face of an opening after molding operations without changing molds even when the opening position is changed by a method in which a surface finishing material is coated on the upside of a core, an upper mold is placed on the core, and a molding resin is cast into he cavity. CONSTITUTION:A surface finishing material 2 is coated on the upside of a lower mold 1, a core 3 of a shape of an opening is placed on the lower mold 1, and a surface finishing material 2 is again coated on the upside of them. A molding resin 7 is then cast into the lower mold 1, the upper mold 5 is covered on them, and the resin 7 is hardened in the cavity 6. The position of the opening of the top plate can thus be freely changed simply by altering the placing position of the core 3. Also, since the upside of the core 3 is coated with the surface finishing material 2, the surface finished layer can be consequently provided on the inner face of the opening to eliminate the needs for puttying and finishing the inside of the cavity in the end face of the opening. |
