Improvement of Water Resistant Properties of a Linerboard for Corrugated Fiberboard Box by Coating with Na-alginate

알긴산 코팅에 의한 골판지 상자 제조용 라이너 원지의 수분저항성 증진

  • Kim, Eun-Jung (Institute of Life Science and Resource, Department of Food Sci. & Biotech., Kyung Hee University) ;
  • Rhim, Jong-Whan (Department of Food Engineering, Mokpo National University) ;
  • Kim, Byung-Yong (Institute of Life Science and Resource, Department of Food Sci. & Biotech., Kyung Hee University)
  • 김은정 (경희대학교 생명자원연구원 식품공학과) ;
  • 임종환 (목포대학교 식품공학과) ;
  • 김병용 (경희대학교 생명자원연구원 식품공학과)
  • Published : 2006.12.31

Abstract

To improve water resistance of paperboard used to manufacture the corrugated boxes, effect of surface coating of the liner- board with Na-alginate was investigated by determining the optimum processing conditions such as a optimum alginate concentration for surface coating, plasticizer content, concentration of divalent cations their immersion times, For the surface coating of the liner-board, 2.5% Na-alginate solution was found to be the optimum concentration, and the concentration of glycerol used as plasticizer was effective when 35% alginate concentration was use was Used Immersion of the alginate coated paperboard for 3 min in a $CaCl_2$ solution improved the water resistance properties. As a divalent cation for the insolubilization of the alginate films, $Cu^{2+}$ was found to be as effective as $Ca^{2+}$. Among the platicizers tested, sorbitol was the most effective in reducing water vapor permeability and water solubility of alginate coated paperboard.

Keywords

linear-board;Na-alginate;divalent cations;plasticizer

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