Posts tagged "plastic injection"

The so-called injection molding is that the plastic materials in the barrel of the injection molding machine undergo external heating and the shear heat generated by the rotation of the screw to plasticize the resin materials into a melt, and then apply a certain pressure to inject the melt into the cavity with a certain shape. After cooling and shaping, the products produced are injection molding. 1. Injection molding process The injection molding process of

Three mechanical states of plastics In nature, we divide all substances into three states of aggregation at room temperature: liquid, gas and solid. Polymers represented by amorphous linear polymers, due to the continuity of molecular structure and their huge molecular weight, their aggregation state is different from that of ordinary low molecular compounds, but under different thermal conditions, they exist in three unique forms, namely, glass state, high elastic state, and viscous flow state There

1. Injection pressure The injection pressure is provided by the hydraulic system of the injection system. The pressure of the hydraulic cylinder is transmitted to the plastic melt through the screw of the injection molding machine. Driven by the pressure, the plastic melt enters the vertical runner (also the main runner for some molds), the main runner and the branch runner of the mold through the nozzle of the injection molding machine, and enters the

What is the injection molding cycle The time required to complete an injection molding process is called the molding cycle, also known as the molding cycle. It actually includes the following parts: Molding cycle: The molding cycle directly affects labor productivity and equipment utilization. Therefore, in the production process, the relevant time in the molding cycle should be shortened as much as possible on the premise of ensuring the quality. In the whole molding cycle,