Material Drying
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POM color masterbatch handling
Problem Phenomenon
Silver streaks appear on POM products with added color masterbatch
Cause Analysis
The color masterbatch carrier absorbs moisture or has poor compatibility with POM, bringing in moisture and interface defects; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Select POM-dedicated color masterbatch; dry under the same conditions as the base material; follow the supplier's guidelines for the addition ratio; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
POM color masterbatch must be dedicated and dried synchronously; 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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