Molds & Tooling
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TPU Mold Temperature Uniformity
Fenómeno del problema
TPU products show inconsistent hardness at different positions
Análisis de la causa
Uneven mold cooling makes crystallization and phase separation states different, resulting in uneven performance; when troubleshooting on site, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting
Solución
Equalize water channels; cavity temperature difference ±3°C; strengthen water channels at thick-wall areas; 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
TPU performance uniformity is guaranteed by mold temperature uniformity; after confirming effectiveness, solidify 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 in the future
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