Temperature control of plastic mold processing and injection molding

Temperature control plays a very important role in plastic mold processing and injection molding, as it can determine whether the product is good or bad. Even if you produce it and hand it over to customers, you will lose their trust and cause losses to the company. On the other hand, it's okay to redo it, but remember that these are actually wasting the company's resources.

1. Tube temperature: The temperature that needs to be controlled during the injection molding process includes the tube temperature, nozzle temperature, and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, while the latter temperature mainly affects the flow and cooling of plastics. Every type of plastic has a different flow temperature, and the flow temperature and decomposition temperature of the same plastic vary due to different sources or grades. This is because the average molecular weight and molecular weight distribution are different, and the plasticization process of plastic in different types of injection machines is also different. Therefore, the selection of barrel temperature is also different.

2. Mouth temperature: The nozzle temperature is usually slightly lower than the top temperature of the material barrel, in order to prevent the possible "salivation phenomenon" of molten material in the straight through nozzle. The nozzle temperature should not be too low, otherwise it will cause premature solidification of the melt and block the nozzle, or affect the performance of the product due to the injection of premature solidified material into the mold cavity

3. Mold temperature: Mold temperature has a significant impact on the intrinsic properties and apparent quality of the product. The temperature of the mold is determined by the presence or absence of plastic crystallinity, the size and structure of the product, performance requirements, and other process conditions such as melt temperature, injection speed and pressure, molding cycle, etc