Anilox plugging issues have been around since the dawn of flexography. In a never-ending push for better print quality, anilox manufacturers’ are continually pushed to create smaller, higher linecount cells. As cell sizes have decreased, a two-fold problem has arisen. The microscopic cell architecture, so critical to color density and print quality, has become so fine that ink tends to build up in the cells that determine color density and print quality. This presents increased challenge in removing dried ink from a fine cell structure. Many approaches have been devised to combat these issues. There are currently arguably seven off-press anilox cleaning methods. Each has its own pros and cons. Issues of cost and effectiveness have to be weighed against environmental concerns and potential for damage to the anilox rolls. Virtually any of these methods can be effective if used properly. Used improperly, they can result in damage and deterioration of the cell structure they are designed to rejuvenate.
Publisher
Champaign, IL : Printers' National Environmental Assistance Center
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