Processing Machinery
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TPE Weld Line
Fenómeno del problema
Weld lines appear on the product surface with low strength.
Análisis de la causa
When two melt fronts converge, the temperature is low and fusion is poor; TPE softness makes the weld line appearance relatively inconspicuous but strength is still affected.; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blind machine adjustment based solely on experience
Solución
①Raise melt and mold temperature; ②optimize gate position; ③increase convergence speed; ④set venting at the convergence.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
TPE weld line strength management is the same as other materials; temperature and gate are the main means.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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