Injection molding vulcanization process

The most obvious difference between ordinary molding and injection molding is that the former compound is filled into the mold cavity in a cold state, while the latter is heated and mixed and injected into the mold cavity at a temperature close to vulcanization. Therefore, during the injection pressure process, the heat provided by the heating template is only used to maintain the vulcanization, which can quickly heat the rubber to 190℃-220℃. In the molding process, the heat provided by the heating template is first used to preheat the rubber, because of the poor thermal conductivity of rubber, if the product is very thick, the heat to the center of the product takes a long time. The use of high temperature vulcanization can also shorten the operation time to a certain extent, but it often leads to the edge of the product near the hot plate. The injection vulcanization method can shorten the molding cycle and realize automatic operation, which is the most favorable for mass production. Injection pressure also has the following advantages: it can save the process of semi-finished product preparation, mold drawing and product trimming; It can produce high quality products with stable size and excellent physical and mechanical properties. Reduce vulcanization time, improve production efficiency, reduce the amount of rubber material, reduce costs, reduce waste products, and improve the economic efficiency of enterprises.