| 摘要 |
An electrical heater (3) is buried in the upper and lower surfaces (1')(1'') of the manifold. Synthetic resin (8) is introduced in a hopper (10) of a cylinder (9) having a built-in transfer screw (11), heated by a heater (12) provided on the circumference of the cylinder (9), guided into the injection nozzle (7) disposed on the lower part of the manifold, and injected into the metal mold (6) through the injection nozzle (7).
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