| 摘要 |
PROBLEM TO BE SOLVED: To avoid the local rising of the temperature of a mold in the vicinity of a gate part by improving the structure in the vicinity of the gate part of a hot runner in a press mold, an injection mold or the like not only to eliminate molding failure but also to enhance the heat efficiency of the hot runner. SOLUTION: The transfer of heat from the hot runner 50 to a lower mold 30 is prevented by interposing a heat insulating member 52 comprising a nickel/ stainless steel, a copper alloy or a copper/nickel alloy between the gate part 51 being in contact with the lower mold 30 and the hot runner 50 not only to avoid the local temperature rising of the mold in the vicinity of the gate part but also to enhance the heat efficiency of the hot runner 50. COPYRIGHT: (C)2003,JPO
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