Processing Machinery
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POM formaldehyde odor exceeding standard in workshop
Problem Phenomenon
The pungent odor in the workshop air is obvious, employees report eye and throat discomfort, and testing finds the formaldehyde concentration is too high.
Cause Analysis
Excessively high POM processing temperature or heat preservation during shutdown aggravates decomposition, and formaldehyde is continuously released; poor workshop ventilation causes gas accumulation and the concentration gradually rises.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①Strictly control the melt temperature not to exceed 230℃; ②clean the barrel before shutdown without retaining POM; ③strengthen local workshop exhaust; ④regularly test formaldehyde concentration.
Key Takeaway
Formaldehyde is an occupational health risk in POM processing; temperature red line plus shutdown cleaning plus ventilation testing constitute a complete gas protection system.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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