Extrusion & Post
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LLDPE Extrusion Motor Load Too High
Problem Phenomenon
The main motor current is high and the torque alarms when processing LLDPE.
Cause Analysis
LLDPE melt viscosity is high, shear heat generation is large, and conveying resistance is large; when the screw design is improper or the temperature is too low, the load soars.
Solution
① Appropriately raise the barrel temperature; ② reduce the screw speed; ③ use a low-shear screw suitable for LLDPE; ④ check the filter screen pressure difference.
Key Takeaway
High load = high viscosity nature; raise temperature, reduce speed, change the screw.
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