| 摘要 |
An injection molding method which supplies gas to molten resin in a plasticizing cylinder and injects gas-dissolved molten resin, characterized in that a gas space at a specified gas pressure is formed in the plasticizing cylinder in a gas supply unit when plasticizing resin, and a pressure at a screw tip end is kept at at least a gas pressure in the gas space and in a pressure range capable of maintaining the gas space in the plasticizing cylinder in the gas supply unit, whereby it is possible to dissolve gas in a required amount into molten resin with satisfactory reproducibility and weight. |
