In the process of plastic mold injection molding, temperature control is extremely important, it will not only affect the quality of the product but also affect its molding cycle. Different plastics have different flow properties, so their temperature control is also different. Plastics with good fluidity are generally controlled at around 60°C; plastics with poor fluidity are generally controlled between 80°C and 120°C. In addition, the cooling process of crystalline plastic and amorphous plastic is also different, which should be distinguished in the injection molding process.

In the process of plastic mold injection, if the temperature is too high, it will affect the uneven shrinkage of the molding, resulting in deformation of the mold product; if the temperature is too low, it will reduce its fluidity, resulting in the formation of defects or flow lines on the surface after molding. If the temperature of the mold is not uniform, the temperature after curing will also be uneven, which will cause stress to deform and crack the molded product. Therefore, the control of temperature has a great influence on the shrinkage rate, stability and quality of the product. We need to pay extra attention when plastic mold injection.