Extrusion & Post
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EEA Screw Slipping
Problem Phenomenon
During EEA extrusion, the screw slips, feed does not advance, output drops sharply
Cause Analysis
EEA pellets melt too early in the feeding section, forming a lubricating film causing screw slip; feeding section temperature too high
Solution
1) Lower the feeding section temperature by 10-15°C to delay melting; 2) Deepen the feeding section flight to increase material grip; 3) Dry the pellet surface to reduce lubrication
Key Takeaway
Screw slipping is caused by premature melting; cooling the feeding section is key
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