Extrusion & Post
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PVC Tarpaulin
Problem Phenomenon
PVC tarpaulin strength decreased after outdoor use
Cause Analysis
UV and folding fatigue aged the coating and base fabric; 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
Select weather-resistant coating formulation; avoid dead folds when folding for storage; regular inspection; 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
Tarpaulin weather resistance relies on coating formulation and use management; 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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