Injection Molding
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EVA '2079851475616104452 shrinkage rate management
Fenómeno del problema
The dimensional deviation of EVA products is large.
Análisis de la causa
The shrinkage rate of EVA varies with VA content and foaming tendency; process fluctuations amplify dimensional deviation.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solución
①Design the mold based on measured shrinkage rate; ②stabilize the '2079851475616104453; ③control material batches; ④test after aging.; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Conclusión clave
EVA dimensional management starts with the measured shrinkage rate; batch consistency is the foundation of stability.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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