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Optimization of Repulping Process of Unsorted ONP for Pulp Mold (I) - Laboratory high consistency pulper -  

Ryu, Jeong-Yong (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
Cho, Byoung-Uk (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
Kim, Tae-Keun (Pung Nyun Ind. Co.)
Park, Dae-Sik (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
Shin, Eun-Ju (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
Song, Bong-Keun (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.39, no.4, 2007 , pp. 38-44 More about this Journal
Abstract
In order to utilize unsorted ONP, which contains leaflets (printed coated papers), to produce pulp mold, optimum conditions for a repulping process were investigated with a laboratory high consistency pulper. It was concluded that medium or high consistency pulping is necessary to accelerate the rate of deflaking of unsorted ONP. Considering flake content, fines content and pulping energy, the optimum conditions for the laboratory Helico pulper were 11% of repulping concentration and 3 min of repulping time. The repulping temperature shall be at least $30^{\circ}C$. Aging of paper slows down the rate of de flaking but in an actual pulp molding process its effect could be negligible.
Keywords
pulp mold; repulping; defibering kinetics; process optimization;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 2
연도 인용수 순위
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