The time required to complete an injection molding process is called the molding cycle, also known as the molding cycle. The plastic molding cycle directly affects labor productivity and equipment utilization. The following small series will introduce you to the molding cycle of the plastic box:
1. Before the sealing of the melt at the gate, the amount of holding time has an influence on the dimensional accuracy of the plastic box. The holding time depends on the material temperature, the mold temperature and the size of the main channel and the gate. The size and process conditions of the mouth are normal, usually the pressure value of the range of fluctuation of the shrinkage of the product is the smallest. The cooling time is mainly determined by the thickness of the plastic box, the thermal properties and crystallization properties of the plastic, and the temperature of the mold. .
2. The end point of the cooling time should be based on the principle that the plastic box is not changed when the mold is released. The cooling time is generally between 30 and 120 seconds. The cooling time is not necessary, which not only reduces the production efficiency, but also complicates the complicated system. The parts will also cause difficulty in demolding, and even release stress will be generated when the mold is released. The other time in the molding cycle of the plastic box is related to the continuity of the production process, automation, and the degree of continuity and automation.
3. In the production process of plastic boxes, the relevant time in the molding cycle should be shortened as much as possible under the premise of ensuring the quality. Injection time and cooling time are of the utmost importance throughout the molding cycle and they have a decisive influence on the quality of the product.