The hot runner system is a collection of heating components used in injection molds to inject melted plastic into the cavity of the mold.
The hot runner system is generally composed of several parts, such as hot nozzle, diverter plate, temperature control box and accessories.

Hot nozzle generally includes two kinds: open hot nozzle and needle valve hot nozzle, because the hot nozzle form directly determines the hot runner system selection and mold manufacturing, so the hot runner system is often divided into open hot runner system and needle valve hot runner system accordingly.

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The hot runner system has many advantages and applications, mainly the following points:
Save plastic raw materials: In the pure hot runner mold, because there is no cold runner, there is no production waste, which makes the hot runner system an effective way to reduce waste and reduce material costs. Energy saving and environmental protection: The hot runner system can achieve accurate temperature control, high energy efficiency, reduce energy waste, and meet the development requirements of green environmental protection.
Improve production efficiency: The use of hot runner system can shorten the molding cycle and speed up the production schedule. At the same time, there is no limitation of the cooling time of the runner system, and the products can be epped out in time after molding and curing, so the production efficiency is improved.
Optimized design: The design flexibility of the hot runner system is high, which can meet the design needs of various products of different shapes and sizes. At the same time, the standardization of the hot runner system is high, which is convenient for large-scale production. High reliability: The hot runner system adopts high temperature and high pressure precision injection technology, and the product quality is stable and reliable, which can meet the requirements of various high-end products.