| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for molding a plastic product by combining a secondary molding machine which performs an intermitting operation to a biaxial extruder which performs a continuous operation. SOLUTION: This molding method molds a plastic product by attaching the secondary molding machine which intermittently operates to the nozzle of the biaxial extruder. In the molding method, an opening/closing valve 17 is provided between the nozzle 16 of the biaxial extruder 10 and an injection-molding machine 18. When the opening/closing valve 17 is opened, a screw 15 of the biaxial extruder 10 is set at a rotation speed Ns1, and at the same time, a resin material 12 is fed from a feeding port 11 by a material feeding amount Qf1, and the molten resin is extruded from the nozzle 16. When the opening/closing valve 17 is closed the screw 15 is set at a rotation speed Ns2 which is lower than the rotation speed Ns1, at the same time, the resin material 12 is fed from the feeding port 11 by a material feeding amount Qf2 which is lower than the material feeding amount Qf1, and the continuous operation is performed without stopping the rotation of the screw by accumulating the molten resin in a non-filled area of the biaxial extruder. COPYRIGHT: (C)2004,JPO
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