Molds & Tooling
8 visualizaciones
Insufficient EVOH Flatness
Fenómeno del problema
EVOH flat products flatness >0.5mm/100mm warpage
Análisis de la causa
EVOH shrinkage large and different in each direction; mold cooling uneven; residual stress release causing continuous warpage
Solución
1) Uniform mold temperature to reduce temperature difference; 2) Increase holding pressure to reduce shrinkage differences; 3) Anneal to release residual stress
Conclusión clave
Insufficient flatness is caused by shrinkage differences and stress; uniform cooling and annealing are key
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!