Material Drying
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TPU Drying Records
Problem Phenomenon
When tracing a bubble problem, there is no drying data
Cause Analysis
No records of drying operations; when troubleshooting on site, 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 literature and should be confirmed first during troubleshooting
Solution
Establish drying records: temperature, time, dew point, moisture content; associate with batch number; 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
Key Takeaway
Drying records are the foundation of TPU 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 similar problems in the future
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