HEATER, VALVE FOR RESIN MOLDING, AND HOT RUNNER MOLD DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a heater which makes a calorific value different every area of a prescribed length and can effectively suppress the calorific value of a low heating part in particular, a valve for resin molding which can suppress the occurrence of the dispersion of molding quality, and a hot runner mold device. SOLUTION: A first electric heating wire 12 with its diameter reduced and a second electric heating wire 11 with its diameter increased are joined together in series, the first electric heating wire 12 is made a high heating part, and the second electric heating wire 12 is made the low heating part. COPYRIGHT: (C)2006,JPO&NCIPI