Extrusion & Post
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LDPE Blown Film Temperature
Problembeschreibung
In LDPE blown film, the bubble is unstable and transparency is poor.
Ursachenanalyse
Melt temperature fluctuation changes viscosity, affecting bubble stability and optical properties; 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
Blown film temperature stably controlled at 170-210℃; uniform die temperature; temperature control inspection; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Wichtigste Erkenntnis
Stable blown film temperature is the prerequisite for bubble quality; 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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