Processing Machinery
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LLDPE poor heat seal
Fenómeno do problema
Insufficient heat seal strength of LLDPE film
Análise das causas
Heat seal temperature, time and pressure do not match; 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
Calibrate heat seal parameters; clean film surface; strength sampling; 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
Heat seal relies on parameter calibration; 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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