Method for manufacturing mold for hot-runner injection molding machine
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United States of America Patent
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Dec 23, 2003
Grant Date -
Dec 19, 2002
app pub date -
Aug 12, 2002
filing date -
Feb 10, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a method for manufacturing a mold of a metal hot-runner injection molding machine, a temperature gradient of metal disposed in a nozzle between a heating device of the nozzle and a tip of the nozzle is measured. Then, an area in the nozzle is selected based on the measurement of the temperature gradient such that the metal in the nozzle upon a mold opening has a temperature at which a solidified condition of the metal can be stably maintained, where the temperature is close to a melting temperature of the metal. A gate cut portion is determined in the area.
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