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Rheology Modifiers in Water-based Rotogravure Inks

Summary: Rheology Modifiers in Water-based
Rotogravure Inks
RuRou Mai*, Alexandra Pekarovicova*, and Paul D. Fleming III*
Keywords: associative and non-associative thickener, water-based rotogravure
ink, printability, stability, rheology
Recently, water-based inks have been of more and more interest to the printing
and ink industry, because of their environmental benefits. Compared with
solvent-based inks, water-based inks have more complex formulations because
of their higher surface tensions, lower drying speed, foaming problems, pH
balance, and different rheological properties. The transition from solvent-based
to waterborne inks has been facilitated by advances in both the chemistry and
the printing technologies employed. With the new development in rheology
modifiers and their increasing application in water-based gravure inks, a more
complete investigation of their chemistry, thickening mechanism and effects on
water-based gravure ink systems is necessary. This paper explores the
significant effects of various rheology modifiers, including non-associative and
associative thickeners, on the rheological properties of a water-based
rotogravure ink system. Particular emphasis is given to thickening efficiency
(viscosity profiles of each rheology modifier in a model system), pH stability,


Source: Abubakr, Said - Department of Paper Engineering, Chemical Engineering, and Imaging, Western Michigan University


Collections: Engineering