| 摘要 |
<p>A forming device capable of providing a gas impregnating process while holding the overall length of a screw at such a length that the cylinder of an existing forming machine can be used for the screw without modification, comprising the screw (3) used in the gas impregnating process having a molten resin part (C) positioned on the upstream side thereof and used to bring resin into molten state, a molten resin unfilled part (E) continued to the downstream side of the molten resin part (C) and used to reduce a resin pressure less than the inert gas pressure at a gas feed port (5), and a gas impregnating part (D) continued to the downstream side of the molten resin unfilled part (E) and used to impregnate the molten resin with inert gas fed thereto.</p> |
