Material Drying
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POM low water absorption drying specification
Fenómeno del problema
POM products have poor surface gloss, occasional silver streaks, and appearance parts fail to meet requirements
Análisis de la causa
POM has a water absorption rate of only 0.2-0.5% and is a low water absorption material, so drying is usually unnecessary; but surface moisture from humid seasons or improper storage can still cause silver streaks and reduce surface gloss, so appearance parts need routine drying
Solución
①Routine drying at 80°C×2-4 hours or 110-120°C×3-5 hours; ②moisture-affected raw material must be dried before use; ③for high-gloss appearance parts, list drying as a fixed process step
Conclusión clave
POM drying is icing on the cake rather than a lifeline; routine 80°C×2-4h, moisture-affected material must be baked, appearance parts have a fixed drying process; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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