Molds & Tooling
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TPU Mold Temperature Uniformity
Problembeschreibung
TPU products show inconsistent hardness at different positions
Ursachenanalyse
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
Lösung
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
Wichtigste Erkenntnis
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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