Extrusion & Post
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Burnt Material at LDPE Extrusion Die Head
Problem Phenomenon
The die head gap periodically brings out yellow burnt material.
Cause Analysis
Stagnation and degradation in die head flow channel dead spots; temperature too high or residence too long.
Solution
①Clean die head flow channels; ②optimize flow channels to reduce dead spots; ③control temperature; ④regularly disassemble and wash.
Key Takeaway
Burnt material = dead-spot stagnation degradation.
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