Blow Molding
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LLDPE lab-scale comparison
Fenómeno do problema
Lab-scale blown film and mass-production film have different properties
Análise das causas
Differences in equipment shear and cooling conditions; when troubleshooting on site, 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
Solução
Convert lab-scale results by coefficient; verify on production machine; 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
Scale-up from lab test to mass production requires verification; 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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