Processing Machinery
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TPU product hardness deviation
Fenómeno del problema
Product hardness testing deviates from the target value.
Análisis de la causa
TPU hardness fluctuates with temperature and batches; material mixing or grade errors also cause hardness abnormalities; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solución
①test incoming material hardness; ②stabilize the processing process; ③prevent material mixing; ④test product hardness by batch; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusión clave
For hardness abnormality check the material first and then the process; batch management is the foundation of stability; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later
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