Injection Molding
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LLDPE '2079851475616104452 temperature management
Fenómeno do problema
LLDPE '2079851475616104452 discolors at slightly high temperature; the temperature window is narrower than LDPE.
Análise das causas
LLDPE '2079851475616104452 temperature 200-260℃ is close to LDPE, but the narrow MWD makes viscosity more temperature-sensitive; slightly high temperature may cause degradation; precision parts need stricter temperature control.
Solução
①Melt temperature 200-260℃ adjusted by grade; ②precision parts temperature control ±5℃; ③immediately lower the temperature and purge when discoloration occurs; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Conclusão principal
LLDPE '2079851475616104452 temperature management is stricter than LDPE; the viscosity sensitivity of narrow MWD requires finer temperature control; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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