Processing Machinery
2 views
LDPE Frost Line Height
Problem Phenomenon
LDPE film thickness is uneven and strength is unstable.
Cause Analysis
Frost line (condensation line) height fluctuation changes the draw ratio and cooling state; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; This mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting.
Solution
Stabilize air ring air volume and temperature; fixed monitoring of frost line height; closed-loop bubble size; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; Change only one variable at a time and record parameter changes to facilitate locating effective measures.
Key Takeaway
Frost line stability is the mark of film consistency; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; Incorporate this case into the defect archive as a troubleshooting reference for similar future problems.
Was this helpful?
0 people found this helpful
Thank you for your feedback!