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Screw barrel maintenance methods are mainly the following eight kinds

1) avoid screw idling, slipping and so on;

2) avoid mixing POM and PVC at the same time, will react at the melting temperature, resulting in serious industrial accidents;

3) to avoid foreign objects fall into the material cylinder damage screw and cylinder. Metal debris and debris are prevented from falling into the hopper. If the material is recycled, a magnetic hopper is added to prevent the iron filings from entering the barrel;

4) do not start the machine until the barrel is up to the preset temperature. The new heating generally requires the temperature to set the value of 30 minutes after the operation of the screw;

5) when using anti saliva, be sure to completely melt the plastic in the barrel, so as not to damage the transmission system parts when the screw back;

6) when the molten plastic temperature is normal, but also found that molten plastics appear black spots or discoloration, should check the rubber screw non-return ring seat (apron, fan) is damaged;

7) each stop more than half an hour, it is best to close the blanking mouth, and cleaning material in the barrel, set insulation;

8) when using new plastics, the material in the material can be cleaned. When using POM, PVC, PA+GF and other materials, as much as possible to reduce the degradation of raw materials, after downtime, with ABS and other nozzle materials rinse clean.