DIE FOR MOLDING SYNTHETIC RESIN

摘要

A die for molding a synthetic resin, wherein an insert of the die is divided into an insert front member which has a cavity surface and an insert rear member which does not have a cavity surface; the insert front member is provided with grooves passing a portion near the cavity surface, the grooves being formed from the rear surface of the insert front member toward the cavity surface; electric heaters are housed in the grooves; the grooves are closed by the insert rear member; the electric heaters are placed at the deepest portions of the grooves; the electric heaters are arranged while being divided into a plurality of systems; and a controller is provided for controlling power distribution in each system of the electric heater individually, and performing different temperature controls for the respective heating zones.