Hot runner is a casting method that uses the processing characteristics of thermoplastics to melt plastics by heating and then cool them by molds to create plastic products of various shapes.

In the application of hot runner, thermoplastic plastics are usually used, such as ABS, PC, etc.

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The role of the hot runner in the injection mold is mainly as follows:
The hot runner can inject the melted plastic into the cavity of the mold, so that it flows in the cavity and fills the cavity.
The hot runner system can control the flow direction and speed of the plastic to meet the requirements of various parts of the mold for filling.
The hot runner system enables the plastic to form a fixed shape and structure after cooling to meet the requirements of product design and function.
Therefore, hot runner is a very important part of the injection mold and has a crucial impact on the production and quality of plastic products.