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Development of Dry Forming Mold for the Feasibility Study of Dry Forming of Paper  

Kim, Jong-Min (Department of Forest Science, College of Agriculture and Life Sciences, Seoul National University)
Youn, Hye-Jung (Department of Forest Science, College of Agriculture and Life Sciences, Seoul National University)
Lee, Hak-Lae (Department of Forest Science, College of Agriculture and Life Sciences, Seoul National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.39, no.2, 2007 , pp. 1-8 More about this Journal
Abstract
To examine the feasibility of dry forming technology for papermaking, a dry forming mold (DFM) was developed and evaluated. Main fanning section of DFM was a cylindrical tube, and at the top of the mold a stirring equipment was placed to disperse dry fibers. These fibers were screened using a hole type screen plate placed just under the stirring equipment and dropped freely on the fanning wire located 0.9 m below of the screen plate to form a dry fiber pad. The vertical and horizontal velocity of air flow in the forming cylinder were evaluated and analyzed to find the most effective method of air flow control in the cylinder. Humidification and pressing conditions to obtain a decent dry fanned papers were examined. Results showed dry fanned papers can be prepared with this dry forming mold. And this mold can be used to examine the effect of the papermaking process factors including pressing pressure, drying temperature, humidification on sheet quality of dry formed papers.
Keywords
dry forming; dry forming mold(DFM); humidification; pressing; sheet quality;
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