Two-layer tensioned-web-over-slot die coating: Effect of operating conditions on coating window

Chemical Engineering Science

Volumn 65, Issue 13, 2010, Pages 4065-4079

  Nam, Jaewook ^a   Carvalho, Marcio S ^b  

^a University of Minnesota   (United States)

^b PONTIFICAL CATHOLIC UNIVERSITY OF RIO DE JANEIRO   (Brazil)

Author keywords

Coating process; Elastohydrodynamic; Fluid mechanics; Laminar flow; Mathematical modelling; Multiphase flow; Thin films

Indexed keywords

COATING DEFECTS; COATING FLOW; COATING PROCESS; CRITICAL LAYER THICKNESS; DIE COATINGS; DUAL SLOTS; FLOW FEATURES; INTERLAYER SEPARATION; LIQUID LAYER; LIQUID VISCOSITY; MATHEMATICAL MODELLING; NONUNIFORM; OPERATING CONDITION; OPERATING PARAMETERS; OPERATING WINDOWS; PARAMETER SPACES; THIN CYLINDRICAL SHELL; TRACKING METHOD; TWO LAYERS; ULTRA-THIN; UNIFORM COATING; WEB SPEED; WEB TENSION;

CONTACTS (FLUID MECHANICS); DIES; ELASTOHYDRODYNAMICS; FINITE ELEMENT METHOD; FLUID MECHANICS; LAMINAR FLOW; LIQUIDS; MATHEMATICAL MODELS; MULTIPHASE FLOW; NAVIER STOKES EQUATIONS; THIN FILMS; VISCOSITY; VORTEX FLOW;

COATINGS;

EID: 77953128576     PISSN: 00092509     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ces.2010.03.038     Document Type: Article

References (23)

1. Carvalho M.S. Elastohydrodynamics of tensioned web roll coating process. International Journal for Numerical Methods in Fluids 41 (2003) 561-576
2. Carvalho M.S., Huelsman G.L., and Kolb W.B. Elastohydrodynamics of a moving substrate over a curved plate. A.I.Ch.E. Journal 48 (2002) 739-751
3. Chino, N., Hiraki, Y., Sato, T., 1989. Coating apparatus. U.S. patent 4,854,262.
4. Dan B., Irvin G.C., and Pasquali M. Continuous and scalable fabrication of transparent conducting carbon nanotube films. ACS Nano 3 (2009) 835-843
5. de Santos, J.M., 1991. Two-phase cocurrent downflow through constricted passage. Ph.D. Thesis, University of Minnesota, Published by University Microfilms International, Ann Arbor, MI.
6. Flügge W. Stresses in Shells (1973), Springer-Verlag, New York, Heidelberg, Berlin
7. Kistler S.F., and Scriven L.E. Coating flow theory by finite element and asymptotic analysis of the Navier-Stokes system. International Journal for Numerical Methods in Fluids 4 (1984) 207-229
8. Landau L., and Levich B. Dragging of a liquid by a moving plate. Acta Physicochimica U.R.S.S. 17 (1942) 42-54
9. Maenosono S., Okubo T., and Yamaguchi Y. Overview of nanoparticle array formation by wet coating. Journal of Nanoparticle Research 5 (2003) 5-15
10. Musson, L.C., 2001. Two-layer slot coating. Ph.D. Thesis, University of Minnesota, Published by University Microfilms International, Ann Arbor, MI.
11. Nakama, Y., Chin, E., 1999. Coating method using extrusion die having predetermined gap. U.S. patent 5,922,408.
12. Nam J., and Carvalho M.S. Mid-gap invasion in two-layer slot coating. Journal of Fluid Mechanics 631 (2009) 397-417
13. Nam, J., Carvalho, M.S., 2010a. Flow in tensioned-web-over-slot die coating: effect of die lip design. Chemical Engineering Science, in press.
14. Nam, J., Carvalho, M.S., 2010b. Linear stability analysis of two-layer rectilinear flow in slot coating. A.I.Ch.E. Journal, in press.
15. Nam J., Scriven L.E., and Carvalho M.S. Tracking birth of vortex in flows. Journal of Computational Physics 228 (2009) 4549-4567
16. Park, E., 2008. Physics of coating tensioned-web over slot die. Ph.D. Thesis, University of Minnesota, Published by University Microfilms International, Ann Arbor, MI.
17. Romero O.J., Suszynski W., Scriven L.E., and Carvalho M.S. Low-flow limit in slot coating of dilute solutions of high molecular weight polymer. Journal of Non-Newtonian Fluid Mechanics 118 (2004) 137-156
18. Seydel R. Practical Bifurcation and Stability Analysis (1994), Springer-Verlag, New York
19. Takahashi, S., Shibata, N., 1995. Method and apparatus for simultaneously applying a multi-layered coating at high speeds. U. S. patent 5,384,162.
20. Thompson J.F., Warsi Z.U.A., and Mastin C.W. Numerical Grid Generation: Foundations and Applications (1985), North Holland, Elsevier, Amesterdam
21. Tomaru, M., 1995. Coating apparatus and method including a coating bead having a plurality of slots formed by multiple, adjustable blocks. U.S. patent 5,425,967.
22. Tomaru, M., 1997. Coating method including application of a precoat solution in advance of coating composition. U.S. patent 5,677,004.
23. Vinokur M. On one-dimensional stretching functions for finite-difference calculations. Journal of Computational Physics 50 (1983) 215-234