| 摘要 |
PURPOSE:To prevent the generation of an residual stress and a sink mark in a resin near the outer peripheral edge of a disk like product, by providing the ring mold which contacts the most outer peripheral edge face of the disk with an independent temperature adjusting means in the mold for injection molding the disk like product. CONSTITUTION:In the mold for injection molding a disk like product to which the first mold 1, the second mold 2, a cavity 3, the coolant passage 4 for adjusting the temperature of the first mold 1, the coolant passage 5 for adjusting the temperature of the second mold 2, a stamper 6, the ring mold member 7 contacting the most outer peripheral edge face of the disk, etc. are provided, the coolant passage 10 for adjusting the temperature independently from the coolant passages 4, 5 for adjusting the temperature of the first and second molds is provided to the ring mold 7 which contacts the most outer peripheral edge face 8 of the disk and it is controlled at the temperature different from these. |
