| 摘要 |
PURPOSE:To improve the yield of molding, while the transferring property from a mold is excellent. CONSTITUTION:The die 40 for molding a parison is brought in close contact with the upper aperture of the cavity 14 of a closed mold 10, and molding material is injected into the cavity 14, thereby molding the parison 56. While the parison 56 is injected, air 60 is blown into the parison, and simultaneously the cavity is evacuated (arrow 18) from the cavity surfaces 16a, 16b of the mold 10, and then after the parison 56 has been molded along the whole area of the cavity 14, high pressure-gas is blown into the parison. |
