The heater of Dalian injection molding device gradually melts the raw material particles into fluid flow. It is mainly suitable for temperature adjustment with different raw materials. Increasing the temperature will speed up the flow of raw materials, which can increase efficiency, but not necessarily ensure the yield. An appropriate balance must be achieved.

In addition, the good effect and the characteristics of high thermal cracking of PP are that the raw materials can flow smoothly to the die during production, so as to avoid insufficient filling or reflux. Reflux means that the raw material flow is faster than the output rate, which will increase the average flow efficiency, which is equal to the improvement of MFR. It is one of the available methods for processing.

However, it also causes abnormal MFR distribution, which may lead to increased instability and increased defect rate. However, due to the application, PP finished products are not products with high dimensional precision, so the impact is not great. The heating of raw materials is not only a heater, but also includes friction heat and suffocation time.

Therefore, this is a practical problem. Experience is helpful to solve production problems and improve efficiency. If the mixing effect of the screw is particularly good, sometimes two-stage different screws or biaxial screws are designed, and each section of different forms of screws are set separately to achieve various mixing effects. Strip and needle continuous product dies are classified as special-shaped if they are of special shape. Attention should be paid to the problem of immediate cooling and shaping. Most plastic machines are designed like syringes