Processing Machinery
6 visualizações
PP Color Difference Between Batches
Fenómeno do problema
【Problem Phenomenon】Color difference between batches of PP colored parts
Análise das causas
Heat history differences, color masterbatch dispersion, regrind fluctuations; PP crystallinity also affects hue; during on-site troubleshooting, 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
Lock temperature and residence; precise color masterbatch metering; fixed regrind; uniform crystallization; after adjustment, take continuous samples 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
PP color difference controls heat history and color masterbatch, uniform crystallization is also important; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!