The main purpose of mold temperature controlling is to heat the mold to the working temperature and to keep this temperature. If the above two points are successful, the cycle time can be optimized to ensure the stable high quality of injection molded parts. In plastic processing, mold temperature is an important variable and needs to be properly controlled. Perfect temperature control can reduce the unit cost of plastic injection molding. Besides, it can improve the quality of molded products, ensure the correct reproduction of the surface of plastic parts and the uniformity of shrinkage. Therefore, we must optimize the mold temperature control.

Generally speaking, an increase in mold temperature will reduce the condensation of plastic in the cavity. And that makes it easier for molten plastic to flow in the cavity, resulting in greater part weight and better surface quality. At the same time, the increase in mold temperature will increase the tensile strength of the part. Many molds, especially those used for engineering thermoplastic molding, need to operate at relatively high temperatures. If the mold is not insulated, the heat emitted to the air and the heat of the injection molding machine can easily damage the barrel. Therefore, the mold and the plate should be insulated. And if possible, the surface of the mold should also be insulated. If you consider using a hot runner mold, you should minimize the heat exchange between the hot runner and the cooled molded product. This method can reduce energy loss and warm-up time.