Hot runner nozzle, injection mold, resin molded product manufacturing method, hot runner nozzle manufacturing method

摘要

PROBLEM TO BE SOLVED: To suppress both the temperature of a nozzle tip part of a hot runner die lowering to solidify the resin and the deterioration of the resin due to temperature variation throughout the nozzle, and to realize a small-diameter nozzle. A hot runner nozzle with high performance was required. A tubular member in which a flow path of molten resin is formed from a base portion to an injection port, and a majority region of a side surface of the tubular member including a peripheral side surface of the injection port along an axial direction of a hot runner nozzle. A hot runner nozzle that has an outer layer formed in 1. and a heater, and the thermal conductivity of the material of the outer layer is greater than the thermal conductivity of the material of the tubular member. [Selection diagram] Figure 2