Material Drying
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PVC Drying Records
Problembeschreibung
No drying data available when tracing the bubble problem
Ursachenanalyse
Drying operations were not recorded, so the state of the problem batch cannot be restored; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Lösung
Establish drying records: temperature, time, batch association; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Wichtigste Erkenntnis
Drying records are the basis of traceability; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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