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Effect of Talc on Gravure Printability(I) -Effect of talc on gravure printability of matt and grade coated papers-  

Cheong, Hee-Seok (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University)
Kim, Chang-Keun (Changgang Institute of Paper Science and Technology, Kangwon National University)
Lee, Yong-Kyu (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.41, no.3, 2009 , pp. 1-7 More about this Journal
Abstract
Talc as a coating pigment has been developed in order to replace GCC and clay for matte grade and has received much attention due to various advantages including good gravure printability. In order to elucidate the effects of talc on gravure printability, model papers were produced with three kinds of coating talc whose particle size and brightness are different. Physical properties related to surface and structure and the gravure printability of the sample were tested. Coating color with talc showed lower viscosity than that with clay. For both matte and art grades, talc tended to give lower gloss than day. The smaller the particle size of talc, the better properties in the coating color viscosity and water retention. When the particle size of talc was small enough, the surface roughness of the coated paper produced with talc was similar to that with clay while larger talcs produced rougher surface than clay. On top of that, application of talc improved compressibility and gravure printability of coated paper.
Keywords
Talc; Gravure printing; Helio test; Missing dot;
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