Injection process temperature is very important for plastic injection molding,right injection process temperature is a guarantee of product quality and production effciency.we will show what is the best injection process for different plastic material.
Front:The suck-back section is located at the forefront of the barrel, where the nozzle is situated. The temperature here should be a little lower than that of the plasticization area. Its main purpose is to prevent the molten plastic from flowing back through the nozzle under internal pressure. However, the temperature cannot be too low, or additional plasticization pressure will be required.
Center:The plasticization area is located in the middle of the barrel, where the temperature will gradually rise above the melting point. The purpose of this section is mainly to melt the plastic material. However, if the temperature is too high, the plastic material will be prone to decomposition; if the temperature is too low, it will not be helpful for the plasticization process, and screw torque will also increase.
Rear :The feeding area is close to the hopper. Usually, its temperature is set to be lower to around the melting point of the plastic material. The purpose of this section is mainly to pre-heat the material. So, if the temperature is too high, the plastic will be melted, causing screw slippage and thus affecting material delivery. However, if the temperature is too, screw torque will increase.