| 摘要 |
PROBLEM TO BE SOLVED: To improve a heating system attached to a nozzle of an injection molding machine in order to control a temperature of a molten resin in the nozzle without a surplus space and with a decreased cost. SOLUTION: A slim and long heating cartridge is spirally wound around the outside of the hollow heating cylinder attached to the injection nozzle for the injection molding system. The heating cartridge has the first and second electrically heatable thermal conductors, both electrically insulated from each other. These thermal conductors are arranged in substantially different areas in the lengthwise direction of the heating cartridge in such a manner that the first heating conductor heats the mouth area of the injection nozzle, and the second heating conductor heats the axial area of the injection nozzle. COPYRIGHT: (C)2008,JPO&INPIT
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