Material Drying
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POM plum rain season management
Problem Phenomenon
POM silver streak defects increase during the plum rain season
Cause Analysis
The high-humidity environment increases water adsorption on the material surface, and moisture absorption accelerates after the package is opened; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Uniformly dry opened material during the plum rain season; dehumidify the material warehouse; open only when used; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
POM must also restore drying management in high-humidity seasons; 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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