| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for molding a pipe joint capable of easily and efficiently molding a pipe joint large in thickness and weight using a small capacity injection molding machine, capable of using an existing equipment without newely introducing an equipment because mold clamping force is not required, capable of enhancing the operation efficiency of the equipment and capable of providing an inexpensive commodity. SOLUTION: In a method for molding a pipe joint by injecting the molten resin 5 in a cylinder 3 in the cavity of a mold by the screw 1 fitted in the cylinder 3, the screw is rotated before a predetermined time is elapsed from a point of time when the injection of the molten resin in the cavity is started to extrude and inject the molten resin and advanced after the predetermined time is elapsed to inject the molten resin.
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