Processing Machinery
11 visualizaciones
LLDPE startup procedure
Fenómeno del problema
After starting up following several days of shutdown, gel yellow spots appear on the film
Análisis de la causa
Oxidation of retained material during shutdown; 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
Solución
Purge before startup; discharge at low speed until normal; first-piece inspection; 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
Conclusión clave
When restarting after a shutdown, discharge residual material first; 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
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!