Hot Runner Injection Molding

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Plastic injection molding: hot and cold runner injection molding is a method of plastic products. The molten plastic is injected into the plastic product mold by pressure, and then cooled and molded to obtain various plastic parts. There are mechanical injection molding machines dedicated to injection molding. The most commonly used plastics are polyethylene, polypropylene, ABS, PA, polystyrene, etc.

The hot runner plastic injection is a set of original parts heated by resistance wire. It heats the molten plastic in the entire or partial section from the injection mold sprue sleeve to the injection point of the product cavity. Heating maintains thermal balance so that the plastic can maintain a constant temperature and molten state during the injection molding process. Compared with an injection mold that does not use a hot runner, it eliminates (or reduces) the waste generated by the cold runner during the injection molding production process of the injection mold, and the extra work generated by its recycling.