| 摘要 |
<p>In a method of injection molding of hollow articles by blowing pressurized gas into a mold in addition to injection of molten synthetic resin thereinto, the pressurized gas is fed by means of a multistage compressor and the gas that has been blown into the mold is recovered by a recovery vessel connected to the suction side of the multistage compressor; and, in an apparatus for molding of hollow articles by blowing pressurized gas into the mold in addition to injection of molten synthetic resin thereinto, a gas nozzle for blowing the pressurized gas into the mold is connected to the exhaust side of the multistage compressor through a first valve and also connected, through a second valve, to the recovery vessel connected to the suction side of the compressor.</p> |
