Production & Quality
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PPO Foaming Grade Processing
Fenómeno do problema
【Problem Phenomenon】PPO foaming grades (FN85, etc.) foam unevenly and density is out of control
Análise das causas
Foam grade PPO (FN85, FMC3008, SFG series) UL94 V-0; the matching of foaming ratio and melt strength determines cell quality; too high temperature causes cell collapse, too low causes insufficient foaming
Solução
Process foaming grades according to the dedicated temperature window; precisely meter foaming agent or masterbatch ratio; verify density and flame retardant grade retention; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusão principal
PPO foaming material has a narrow temperature window; verify both density and flame retardancy indicators; 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 subsequent similar problems
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