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The importance of hot runner in injection molding industry
Combination of hot runner and mold used in the injection molding processing industry, play an important role, this is, in the cold runner to illiquid injection molding raw material after raw material in the use of hot runner can obviously improve liquidity; During the production and processing of ultra-thin injection parts, the hot runner can easily produce high quality and high precision parts. For large injection parts, such as automobile injection parts, household appliances, etc., the use of hot runner injection processing will become more simple.
In the multi-cavity mold injection molding, the lack of heat flow channel can not be formed at all. It can be said that heat flow channel is the best technology to ensure the flow channel balance. Because plastic in the flow shear stress, no matter how reasonable geometry mould with balance, the weight of the product shape out is hard to agree, especially for multi-cavity mould, if you do not use hot runner, the forming of the outer edge of the products will be lighter than the inside.
For plastics processors, as long as there is a certain amount of injection production, the use of hot runner is quite economical. This is because the heat flow channel helps enterprises eliminate the water outlet in the injection molding production. In most cases, the nozzle is unlikely to be reused. Sometimes, the weight of the nozzle is almost the same as the weight of the product. If the traditional nozzle injection method is adopted, it means that the waste material is as much as the material used in the product. By this calculation, after using the heat flow channel, the raw materials can be saved by 30% ~ 50%. In addition, the hot runner also helps to reduce the wear of the mold and extend the life of the mold.
