The Use of Experimental Design for Optimizing the Photostabilization of a Substrate Printed by a Water-Based Overprint Clear Coat

In this research optimization of water -based overprint clear coat on printed substrate (flexography) was investigated and optimized by the Design Expert 7 software. the nano silica، Tinuvin 400 and water were the components in composition of overprint clear coat، which affect properties of clear coat. So these components were considered as variable factors in a mixture experimental design and their effects on clear coat properties were studied. Measurements of some physical and mechanical properties such as light fastness، gloss، abrasion resistance and adhesion were carried out on samples. These factors and their interactions effects were determined analysing the results and finally، the optimized regeons on the contour diagrams were obtained. J. Color Sci. Tech. 6 (2012)، 1-8© Institute for Color Science and Technology.