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Flexographic inks: The compromise

Authors
  • De Micheli, P1
  • 1 UCB Chemicals, BU Radcure — Graphics, Anderlechtstraat 33, Drogenbos, B-1620, Belgium , Drogenbos
Type
Published Article
Journal
Surface Coatings International
Publisher
Springer US
Publication Date
Dec 01, 2000
Volume
83
Issue
12
Pages
588–591
Identifiers
DOI: 10.1007/BF02692705
Source
Springer Nature
Keywords
License
Yellow

Abstract

The goal of printing is to apply an image to a substrate by the application of the thinnest possible film of ink that will give the desired colour strength. Developments in equipment and in the production of higher quality Flexo inks has been helping the expansion of this process as a good alternative printing method to gravure and offset printing. The key to obtaining good UV flexographic inks lies in good pigment wetting, ink rheology and the reactivity of the system. Rheological behaviour with the correct amount of well-chosen pigment is directly related to pigment wetting. This imparts to the ink many different properties such as good dispersion, good flow, good transfer to equipment and substrates, correct viscosity, tack and print strength. Also of great importance is the final reactivity of the system and this will affect the choice of the resin. Only highly reactive resin systems may be used in this field.

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