Material Drying
9 visualizaciones
TPU Bubble Cause Distinction
Fenómeno del problema
TPU product bubbles repeatedly appear and persist even after strengthened drying
Análisis de la causa
TPU bubble causes: moisture, degradation, and air entrapment—three routes; treating only drying cannot cure the root cause; when troubleshooting on site, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solución
Empty-shot identification: for moisture bubbles check drying, for degradation bubbles check temperature and shear, for air entrapment check back pressure and venting; 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 bubbles are identified by the three routes before treatment; 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
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!