In the injection molding process of plastic molds, the hot runner is used in conjunction with the mold and plays a very important role. For example, in the injection molding production of ultra-thin plastic parts (such as mobile phone cases), high-precision and high-quality products can be easily produced by using a hot runner; For plastic mold injection materials with poor flowability (such as LCP), the use of a hot runner can significantly improve the flowability of the materials and ensure the smooth production of plastic mold injection.

In the injection molding process of plastic molds with multiple cavities, it is impossible to form without a hot runner. It can be said that hot runner is the best technology to ensure the balance of the runner. Due to the shear force in the flow channel of plastic, no matter how reasonable the geometric balance of the plastic mold is, the weight of the formed product is difficult to be consistent. Especially for plastic molds with multiple cavities, if the hot flow channel is not used, the outer side of the formed product will be lighter than the inner side.

Plastic mold processing

For plastic processors, as long as there is a certain amount of injection molding production, using a hot runner is quite economical. This is because the hot runner helps enterprises eliminate water nozzles in injection molding production. In most cases, the water outlet cannot be reused. Sometimes, the weight of the nozzle is almost the same as the weight of the product. If traditional nozzle injection molding is used, it means that as many raw materials as the product are used are wasted. Based on this calculation, using a hot runner can save 30% to 50% of the raw material. In addition, the hot runner also helps to reduce mold wear and prolong the lifespan of the mold. In general, the service life of hot runner molds is twice that of fine nozzle molds.