Material Drying
3 Aufrufe
TPU drying temperature graded by hardness
Problembeschreibung
High-hardness TPU agglomerates and sticks after drying, or low-hardness TPU is under-dried and still has bubbles
Ursachenanalyse
TPU drying temperature is graded by hardness: Shore A75-90 uses 80-90℃ (dehumidification) or 100-110℃ (circulating air), Shore A90 and above uses 90-120℃ or 100-120℃; soft material agglomerates at high temperature, hard material does not dry at low temperature
Lösung
①set the drying temperature graded by hardness; ②for soft TPU prefer low temperature and long time; ③prevent yellowing when drying exceeds 12 hours; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
TPU drying temperature must match hardness; the higher the hardness the higher the temperature, and a one-size-fits-all parameter will inevitably fail on one side; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!