화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korea-Australia Rheology Journal, Vol.24, No.2, 137-141, June, 2012
DOI10.1007/s13367-012-0016-z  Export Citation
Operability window of slot coating using viscocapillary model for Carreau-type coating liquids
Hyun Jung Koh, Ilyoung Kwon, Hyun Wook Jung†, and Jae Chun Hyun
  • Department of Chemical and Biological Engineering, Korea University, Seoul 136-713, Korea
E-mail:
Based on the simplified viscocapillary models for Newtonian and power-law coating liquids reported in Lee et al. (2011a), the one-dimensional (1-D) viscocapillary model for Carreau-type liquids containing zeroshear viscosity information has been developed for constructing the operability window in slot coating. Velocity distribution and position of upstream meniscus were numerically solved to determine onsets of leaking and bead break-up defects. The results obtained by 1-D model are quantitatively corroborated by two-dimensional (2-D) fluent calculations.
Keywords:operability coating window;slot coating;Carreau-type liquid;viscocapillary model
  1. Chang YR, Lin CF, Liu TJ, Polym. Eng. Sci., 49(6), 1158 (2009)
  2. Chu WB, Yang JW, Wang YC, Liu TJ, Tiu C, Guo J, J. Colloid Interface Sci., 297(1), 215 (2006)
  3. Gates IA, Slot Coating Flows: Feasibility, Quality, PhD Thesis, University of Minnesota. (1999)
  4. Higgins BG, Scriven LE, Ind. Eng. Chem. Fundam., 18, 208 (1979)
  5. Higgins BG, Scriven LE, Chem. Eng. Sci., 35, 673 (1980)
  6. Jung HW, Lee JS, Hyun JC, Kim SJ, Scriven2 LE, Korea-Aust. Rheol. J., 16(4), 227 (2004)
  7. Lee SH, Koh HJ, Ryu BK, Kim SJ, Jung HW, Hyun JC, Chem. Eng. Sci., 66, 4953 (2011)
  8. Lee SH, Il Youn S, Lee JS, Jung HW, Hyun JC, J. Chem. Eng. Jpn., 44(7), 524 (2011)
  9. Middleman S, Fundamentals of Polymer Processing, McGraw-Hill, New York. (1977)
  10. Nagashima K, Ind. Coat. Res., 5, 81 (2004)
  11. Nam JW, Scriven LE, Carvalho MS, J. Comput. Phys., 228, 4549 (2009)
  12. Nam J, Carvalho MS, Chem. Eng. Sci., 65(13), 4065 (2010)
  13. Romero OJ, Scriven LE, Carvalho MS, J. Non-Newton. Fluid Mech., 138(2-3), 63 (2006)
  14. Romero OJ, Carvalho MS, Chem. Eng. Sci., 63(8), 2161 (2008)
  15. Ruschak KJ, Chem. Eng. Sci., 31, 1057 (1976)
  16. Tjiptowidjojo K, Carvalho MS, AIChE J., 55(10), 2491 (2009)
  17. Tsuda T, J. Fluid Sci. Tech., 4, 735 (2009)
  18. Yang CK, Wong DSH, Liu TJ, Polym. Eng. Sci., 44(10), 1970 (2004)