An Analysis of Jet Stripping of Liquid Coatings

[+] Author and Article Information
C. H. Ellen

Engineering & Physics, John Lysaght (Australia) Limited, Research & Technology Centre, Port Kembla, NSW 2505, Australia

C. V. Tu

John Lysaght (Australia) Limited, Research & Technology Centre, Port Kembla, NSW 2505, Australia

J. Fluids Eng 106(4), 399-404 (Dec 01, 1984) (6 pages) doi:10.1115/1.3243137 History: Received November 08, 1983; Online October 26, 2009


This paper presents a new analysis of the jet stripping process, as used to control coating thicknesses in the paper, photographic and galvanizing industries, and demonstrates that the inclusion of a surface shear stress term, acting in conjunction with the pressure gradient on the coating, gives theoretical predictions of coating behavior quite different from those based on stripping which allows only for pressure gradient effect. An illustration is given of how jets operating close to, and further from, the strip during hot dip galvanizing have different effects on the molten coating even though the final coating mass might be the same. Measurements of coating mass, taken from galvanizing line trials, have shown good agreement with the revised theory.

Copyright © 1984 by ASME
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