Processing Machinery
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LDPE First-piece Confirmation
Fenómeno do problema
Production starts immediately at startup, and the first batch film thickness is out of tolerance.
Análise das causas
At startup, temperature and frost line have not stabilized; 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 literature and should be confirmed first during troubleshooting.
Solução
Stabilize for 15 minutes after startup; increase speed after thickness measurement passes; After adjustment, continuously sample 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.
Conclusão principal
After startup stabilization, measure thickness before increasing speed; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; Incorporate this case into the defect archive as a troubleshooting reference for similar future problems.
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