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Neutral Sizing of Linerboard Using Fast Cure Type AKD  

Lee Hak-Lae (Dept. of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University)
Seo Man-Seok (Dept. of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University)
Shin Jong-Ho (Taekwang Chemical Co.)
Youn Hye-Jung (Dept. of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.38, no.1, 2006 , pp. 1-8 More about this Journal
Abstract
To overcome troubles in strength and process of linerboard caused by raw materials, a neutral sizing which is usual in fine paper making can be considered. A new sizing agent is necessary to show good performance in a system with high conductivity and COD. In this study, fast cure type AKD was examined as a new sizing agent and compared with conventional AKD. The effects of fixing agent addition and drying condition were also investigated. Fast cure type AKD which has a higher cationicity showed better sizing degree than conventional AKD in spite of low addition level and no curing treatment. And when fixing agent of sufficient amount was added, sizing degree was improved for both AKDs. High cationicity is a crucial factor for neutral sizing of linerboard for obtaining fast and stable sizing degree. Drying with temperature over $100^{\circ}$ was desirable for developing sizing degree.
Keywords
AKD; fast cure; sizing degree; linerboard; drying; fixing agent;
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