| 초록 |
Slot coating process has been widely used for the many precise coating products, especially, in IT industries manufacturing flat panel displays and long life batteries. However, producing very thin uniform coating film at high speedsis a difficult task because of the occurrence of unexpected coating defects such as leaking, air entrainments, ribbing, rivulets and barring during the coating operations.We have investigated flowcharacteristics and stability of slot coatingflow in coating bead region. Dynamics and coating windows by viscoelastic and shear thinning fluids have been experimentally compared with those by Newtonian one. And also, coating windows for various coating liquids have been theoretically established,providing a good agreement with experiemntal data. |
