Material Drying
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TPU Storage Management
Fenómeno del problema
TPU raw material stored for half a year produces many bubbles during processing and its performance declines
Análisis de la causa
TPU stored for a long time absorbs moisture and may slowly hydrolyze; 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
Solución
Store raw material sealed in a dry environment; first in first out; material stored beyond the period is used after testing; 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
Conclusión clave
TPU storage is sealed plus first in first out; 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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