Processing Machinery
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LLDPE Black Speck
Problembeschreibung
Black specks on light-colored LLDPE products
Ursachenanalyse
Material accumulated in dead spots oxidizes; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience; This mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Lösung
Disassembly and cleaning; material change procedure; monitoring; 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
Black specks rely on disassembly cleaning and monitoring; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; Include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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