Processing Machinery
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LDPE Frost Line Height
Problembeschreibung
LDPE film thickness is uneven and strength is unstable.
Ursachenanalyse
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.
Lösung
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.
Wichtigste Erkenntnis
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.
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