Processing Machinery
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Formaldehyde release from POM degradation
Problem Phenomenon
The formaldehyde odor in the POM molding area of the workshop is pungent, and employees complained
Cause Analysis
Excessively high melt temperature, excessive residence, or mixing in acidic impurities can all cause POM to degrade and release formaldehyde; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Check that the melt temperature does not exceed 210°C and residence does not exceed 10 minutes; clean the barrel; enforce workshop ventilation; shut down immediately for investigation if the odor is abnormal; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Formaldehyde odor is a POM degradation alarm and must be responded to immediately; 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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