What are the ways of feeding the mold hot runner?

Hot runner glue feeding method 1: "point gate", the point gate method is the most common glue feeding method. It is determined by several factors such as gate size, gate cooling and nozzle tip temperature. It is suitable for almost all known plastics, and its glue inlet will leave a small gate mark on the surface of the product, the size of which is determined by the size of the gate and different plastics.

Hot runner feeding method 2: "large nozzle", the nozzle of the large nozzle is an open hot nozzle, and there will be a small shank on the surface of the injection molded product, which can provide a large gate size and achieve excellent pressure holding effect. In order to reduce the product stress, it can be used in the way of not demanding gate marks or shunting runner feeding.

Hot runner glue feeding method three: "needle valve type", for needle valve type, the valve needle is controlled by mechanical pneumatic or hydraulic pressure, and the valve needle will close the gate at the end of the pressure holding, that is to say, when the product has not completely condensed , The glue feeding system has been closed, which can also shorten the forming cycle. The needle valve type can achieve no gate marks, and only leave a circle or even no marks on the surface of the product, which is the best solution for applications with strict surface requirements.

Environmental Protection and Efficiency of Hot Runners

More Information

Hot runner cannot be combined with insert molding technology-Mold|Connector|Automotive Hot Runner

2022-07-13