| 摘要 |
PURPOSE:To obtain a metal mold for blow-molding excellent in heating/cooling response and having substantially uniform temperature distribution on the surface of cavity in which the molding cycle is shortened. CONSTITUTION:The metal mold 80 comprises a surface plate 82 forming the cavity surface, a rear plate 84 disposed in parallel with the surface plate 82 while spaced apart appropriately therefrom, and a plurality of struts 86 being coupled perperidicularly with the surface plate 82 and the rear plate 84 while spacing apart from each other. The space between the surface plate 82 and rear plate 84, except the struts 86, defines a medium channel 80A. |
