Injection molding machine barrel cleaning
- Purpose of injection molding machine barrel cleaning
The exits of buildup in injection machine barrel when we start to operator injection machine will influence the plastic product quality. So in order to guarantee the plastic product quality, injection machine barrel cleaning is very important.
- Method of injection machine barrel cleaning
1) If injection machine want to manufacture many kinds of product, we should manufacture the product with light color, low melt temperature and bad heat stability, thus changing the material, cleaning the barrel is very easy.
2) When the new material temperature is higher than unused material temperature, we should increase the injection machine and nozzle temperature to the lowest process temperature which new material need.
3) If the new material molding temperature lower than unused material in injection machine barrel, we should increase the injection machine barrel temperature, then cut the heating power when the unused material in a certain condition.
4) For the injection machine barrel cleaning of unused material with heat sensitivity, like PVC,POM,PCTFEF3 and so on, to avoid plastic decompose, we can adopt two stages, that is using plastic with good heating stability to transition refueling cleaning first ,like PS,LDPE and so on, then use the new material to replace the transition cleaning material.
5) Use cleaner to clean the injection machine barrel.
No matter change the material directly or transition refueling, they will cost many material. Using cleaner to clean the injection machine barrel can not only save the cost but the effect is good. It is suitable for the injection machine barrel cleaning which process temperature range from 180℃ to 280℃.
- Pattern of injection machine barrel cleaning
1) Plunge type injection machine barrel cleaning
Since big quantity stores, cleaning the injection machine barrel is very difficult, we must use special injection machine barrel.
2) Screw injection machine barrel cleaning
Generally, we use changing material cleaning directly, we should know the temperature range of unused material in injection machine barrel and the heating stability first, and then we can set specific cleaning pattern easily