Injection Molding
7 visualizações
EVA '2079851475616104452 flash
Fenómeno do problema
Flash on the parting line of the product.
Análise das causas
EVA has good flowability and easily penetrates the parting line gap under high pressure; insufficient clamping or mold wear aggravates it.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solução
①Check the clamping force; ②overhaul the parting line; ③lower the injection pressure; ④optimize the holding pressure curve.; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Conclusão principal
Flash control is investigated according to clamping and mold condition; the low viscosity of EVA requires stricter parting line precision.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!