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 its molding cycle. Different plastics have different fluidity, so their temperature control is also different. Plastics with good fluidity are generally controlled at about 60 ° C; plastics with poor fluidity are generally controlled between 80 ° C and 120 ° C. In addition, the cooling process of crystalline plastics and non-crystalline plastics is not the same. This point should be distinguished in the injection molding process.
During the injection molding process of plastic molds, if the temperature is too high, it will affect the uneven shrinkage of the molding and cause deformation of the mold products; if the temperature is too low, it will reduce its fluidity, resulting in defects or flow marks on the surface after molding. If the temperature of the mold is not uniform, the temperature after curing will be uneven, and stress will be generated, which will deform and crack the molded product. Therefore, the temperature control has a great impact on the shrinkage, stability, and quality of the product. We must pay special attention to plastic injection molding.
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The importance of temperature control of plastic bottle caps mold
2019-12-20
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