The problem that the barrel screw plasticization is not […]
The problem that the barrel screw plasticization is not good should be noted:
1. Clean the rubber head or replace the rubber head! Remove the head and burn it with fire. Thoroughly clean the remaining material on the rubber head. 2. Check carefully, starting from the hopper, and the inner spring nozzle.
3。 Check if the raw material of the screw barrel is filled with toner, if the temperature is set properly, the new machine barrel may have oil, and so on。
4. Whether the pipeline for conveying raw materials is anti-static hose or stainless steel pipeline. When the raw material is transported, there will be static electricity generated when rubbing with ordinary PVC hose, and static electricity will cause black spots of the product.
5. Check the dehumidifying dryer of the raw material, the regeneration temperature is very high, if the quality of the heating tube is not good, it is easy to have the black sheet falling off the outer wall of the heating tube, then falling into the molecular sieve, and then entering the whole system. In this way, you make The product has black spots.
6. To use the special screw barrel, because the PC material is very corrosive, and the black material will come out when the screw is spoiled.