Material Drying
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POM low water absorption drying specification
Fenómeno do problema
POM products have poor surface gloss, occasional silver streaks, and appearance parts fail to meet requirements
Análise das causas
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
Solução
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
Conclusão principal
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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