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http://dx.doi.org/10.7584/ktappi.2012.44.4.001

Application of spacers for increasing OCC solid content in wet pressing process (I)  

Hwang, In-Young (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University)
Lee, Young-Ho (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University)
Jung, Jae-Gwon (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University)
Sung, Yong-Joo (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University)
Seo, Yung-Bum (Dept. of Bio-Materials, College of Agriculture and Life Science, Chungnam National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.44, no.4, 2012 , pp. 1-7 More about this Journal
Abstract
The increase of OCC solid content after wet pressing will save drying energy greatly. We applied spacers, which used to increase draining rate and bulk in fiber furnishes, to increase the OCC solid contents. MDF fibers (fibers for making medium density fiberboard) and diatomaceous earth were used as spacers, and added 10% by weight to the OCC fiber furnish. Application of high wet pressing pressure to the mixed furnish of spacers and refined OCC did not deteriorate bulk and drainage rate, but their solid contents were increased to 0.5-1.5% without loss of compressive strength when compared to those of unrefined OCC, which is the furnish normally used for mill commercial practice. It is believed that the spacers caused the rate of solid content increase faster in the mixed furnish with OCC at high wet pressing pressure area than the unrefined OCC furnish did. Little amount of starch addition (0.5%) to the spacers helped to keep the strength properties.
Keywords
OCC; wet pressing; spacer; refining; solid content; paper properties;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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