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Application of Cationic PVAm - Anionic PAM Dry Strength Aids System on a Kraft Paper Mill  

Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University)
Ryu, Jeong-Yong (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology(KRICT))
Son, Dong-Jin (Eyang Chemical Co., Ltd.)
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.42, no.3, 2010 , pp. 50-57 More about this Journal
Abstract
A mill trial was performed in a kraft paper mill in order to evaluate the possibility of utilizing dual polymer dry strength aids system consisting of cationic PVAm and anionic PAM. It was found that the cationic PVAm - anionic PAM dry strength additives can improve paper strength without significantly disturbing the stability of the kraft papermaking process when virgin UKP was used as a furnish. Tensile strength (25.3% in machine direction, 48.4% in cross machine direction), elongation of paper (31.6%, 15.6%) and tensile energy absorption (48%, 54%) were improved. Air permeability of the kraft paper was improved as well (22%). Tear strength was decreased with PVAm dry strength aids system, but it can be compensated with decreasing refining degree. In addition, the mill trial results indicate that highly air permeable kraft sack paper can be produced by the addition of PVAm dry strength agents at the stock with reduced freeness.
Keywords
Polyvinylamine (PVAm); Anionic polyacrylamide (PAM); Dry strength additives; Kraft paper;
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Times Cited By KSCI : 3  (Citation Analysis)
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