Material Drying
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PET drying record system
Fenómeno do problema
When tracing a white haze quality problem, the drying state of the batch cannot be restored
Análise das causas
There are no records of drying operations, temperature, time, and dew point all rely on experience, and problem tracing is broken; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solução
Establish drying batch records: temperature, time, dew point, and moisture content are registered batch by batch; associate with the product batch number; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Drying records are the basic data for quality traceability; 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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