Processing Machinery
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EVA foaming density testing
Problem Phenomenon
Inconsistent density testing methods cause quality disputes.
Cause Analysis
The density of foamed products is affected by sampling position and testing method; different methods of the supply and demand sides give different results.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solution
①Unify the testing method and sampling position; ②agree on testing standards; ③benchmark verification between both parties; ④record testing conditions.; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Testing standardization is the foundation of quality cooperation; method unification is more important than the numerical value.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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