Injection Molding
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HDPE Flash
Fenómeno del problema
HDPE injection molded part has flash at parting line
Análisis de la causa
Insufficient clamping force or parting line wear lets HDPE overflow when flowability is good; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solución
Calculate clamping force; fit the parting line; stage injection pressure; 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
For HDPE flash, check clamping force and parting line; after confirming effectiveness, solidify 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
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