Processing Machinery
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PVC Recycling Difficulty
Problem Phenomenon
PVC recycled material has poor reprocessing quality and odor
Cause Analysis
PVC recycled material has complex thermal history, consumed stabilizer and contains impurities; during on-site troubleshooting, verify item by item according to this mechanism to 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
PVC recycling is mainly closed-loop within the same category; add stabilizer; downgrade use; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
PVC recycling should be closed-loop and downgraded, with limited quality; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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