During the twin screw extruder working, sometimes there are materials belch from the exhaust vent, what is the reason?
There are the following reasons and solutions:
1, The twin screw extruder head temperature is low, the head pressure is too large.The material can not be extruded timely.
Solution: you should adjust the head temperature.
2, Material melting refers to too low, poor mobility.
Solution: adding some additives to improve the melt.
3, The screw combination of a problem. Exhaust pressure is not enough before the exhaust.
Solution : you can adjust the combination of screw,let transport screw in the exhaust vent.
4, Feeder feed the material too fast.
Solution: please adjut the speed of feed material , keep material feed smooth.
5, The material has a large number of low boiling point of the material, such as water content.
Solution :You need to use dryer to dry the material before processing .
6, The temperature set unreasonable, expected to have no plastic plastic vent.
Solution: please improving the barrel temperature to make the material melting.
7, screen plug more, resulting in head pressure rise.
Solution: Using hydraulic screen changer , screen change time is 2-3S,reduce the screen blocking material .
Post by shelley