| 摘要 |
PURPOSE:To provide the molding method of a bottomed cylindrical article, in which no welding line is generated on the surface of a bottom plate. CONSTITUTION:A molding die with a main gate 10 formed at the central section of the parting surface 45 of the selected sidewall 3-1 of a product to be molded and a sub-gate 11, which is formed forced to the gate 10 to a sidewall 3-2 oppositely faced to the sidewal 3-1 and a sectional area of which is made sufficiently smaller than that of the main gate 10, is used, and a molten resin is injected and injection-molded simultaneously into a cavity 43 from the main gate 10 and the sub-gate 11. |
