Material Drying
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POM storage management
Fenómeno del problema
POM pellets stored openly for one month show increased bubbles during molding
Análisis de la causa
Although POM has low water absorption, long-term open storage accumulates adsorbed moisture on the surface; during on-site troubleshooting, verify item by item according to this mechanism, and 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
Solución
Store raw materials sealed; use up as soon as possible after opening; dry over-stored material before use; after adjustment, take continuous samples 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
Sealed storage of POM is a basic requirement; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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