Author: MULAN -Plastic Molding Manufacturer
In injection mold processing, the integrity of this expertise is an indispensable project, which involves the transformation of plastics into products that retain the original system properties. The important production process design conditions of injection molding are the temperature, pressure and corresponding different effects that affect the plasticizing flow and cooling. Here we roughly analyze can be divided into 3 aspects: 1. Temperature and control, 2. Pressure management and control, 3. Molding cycle.
There are a total of 3 points for temperature control to explain the barrel, nozzle, and mold working temperature data as follows: 1. Barrel temperature: According to different conditions, the temperature of the selected barrel is also different. The temperature to be controlled in the injection molding process has the cylinder temperature, which mainly affects the plasticization and flow of plastic. Each plastic has a different flow temperature. The same plastic has different flow temperature and decomposition temperature due to different sources or brands. This is due to the difference in average molecular weight and molecular weight distribution. Plastics are also different in the plasticizing process of different types of injection machines. , so the choice of barrel temperature is not the same.
2. Nozzle temperature: Usually in this case, the nozzle temperature is slightly lower than the ambient temperature of the barrel. This is because the enterprise can prevent the occurrence of salivation when the molten material is in the straight-through nozzle. The temperature of the nozzle should not be too low, otherwise we will develop the early solidification of the molten material and block the nozzle, or the performance of the product will be affected by the injection of the early solidification material into the mold cavity. Only proper temperature control can ensure the product quality. performance and other characteristics. 3. Mold temperature: Generally speaking, the mold temperature has a great influence on the internal performance and appearance quality of the product, which can be said to be a very important factor.
The temperature of the injection mold depends on the crystallinity of the plastic, the size and structure of the product, the performance requirements, the melt temperature, the injection speed, the injection pressure and the molding cycle.