Injection molds are always used, especially in industrial production, as they play a significant role in the manufacturing of our products. During the production process of injection molds, refrigeration is usually carried out to maintain the molding temperature of the plastic in the injection mold. However, in some cases, it is necessary to heat the injection mold. Under what circumstances must heating be necessary? Below is an introduction for everyone. If you are interested, let's follow the editor and read on!
1. For certain high viscosity plastics (which have poor flowability) and their crystalline plastics, such as PC, PETP, PPO, etc., the mold temperature is often kept high during molding. When processing plastic injection molds, it is theoretically and practically impossible to maintain the mold temperature solely by releasing heat when the solution condenses. Therefore, when planning the injection mold for forming this type of plastic, it is necessary to consider its heating.
2. For large injection molds, in order to ensure uniform product size and characteristics, ensure product quality, and produce qualified products, it is necessary to preheat the mold manufacturing to a suitable temperature before starting.
3. In the planning of hot runner processing injection molds, it is also necessary to consider the heating of the runner plate and its corresponding temperature control in order to maintain the molten state of the plastic injection mold manufacturing solution in its runner.
Do you know under what conditions heating should be carried out for injection molds?