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Dynamic Wetting of Water-Based Inks in Flexographic and Gravure Printing

  • F. J. Micale
  • S. Sa-Nguandekul
  • J. Lavelle
  • D. Henderson
Chapter

Abstract

The theory of wetting is reviewed with respect to ink transfer which is based upon measured dynamic surface tension and calculated dynamic spreading coefficient. Laboratory gravure ink transfer results are presented for model water based inks with and without isopropanol as the cosolvent on untreated and corona treated polyethylene film. A mechanism of surface tension driven convection is proposed which is consistent with experimental results. The conclusion, which is based upon the proposed mechanism, is that uniform coverage of a water based ink on a nonpermeable substrate is facilitated by the presence of a high vapor pressure low surface tension cosolvent such as isopropanol. When no cosolvent is present, de-wetting and degree of ink mottling appears to be controlled by dynamics longer than one second.

Keywords

Surface Tension Dynamic Surface Tension Spreading Coefficient Equilibrium Surface Tension Gravure Printing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Micale, F. J., Iwasa, S., Lavelle, J., Sunday, S. and Fetsko, J., “The Role of Wetting-l”, American Ink Maker, 67(9), 44–54 (1989).Google Scholar
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    Micale, F.J., Iwasa, S., Lavelle, J., Sunday, S. and Fetsko, J., “The Role of Wetting-2”, American Ink Maker, 67(10), 25–35 (1989).Google Scholar
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    Lavelle, J., Micale, F.J., and Fetsko, J., “Simulated Printing on the Prufbau Printability Tester”, American Ink Maker, 67(8), 50–69 (1989).Google Scholar
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    Henderson, D. and Micale, F.J., J. Colloid Interf. Sci., 158, 289–294 (1993).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • F. J. Micale
    • 1
  • S. Sa-Nguandekul
    • 1
  • J. Lavelle
    • 1
  • D. Henderson
    • 1
  1. 1.Sinclair Lab.Lehigh UniversityBethlehemUSA

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