Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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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
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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.

골판지 상자의 수분저항성을 증진시키기 위해 골판지 상자 제조에 사용되는 라이너지의 표면을 알긴산으로 표면코팅을 하기 위한 최적 조건을 결정하기 위하여 농도, 가소제의 종류와 사용량, 알긴산의 불용화를 위한 다가 금속이온의 종류와 최적농도 및 침지시간 등을 결정하였다. 라이너지의 표면코팅을 위한 알긴산의 농도는 2.5%(w/w)가 적합하였으며, 가소제인 글리세롤은 알긴산 대비 35%의 농도로 사용하는 것이 적합하였고, 알긴산 필름의 불용화를 위해서는 2% $CaCl_2$ 용약을 사용하여 3분간 처리하는 것이 라이너지의 수분에 대한 저항성 증진에 최적조건을 결정되었다. 다가 금속이온으로 $CA^{2+}＄ 이외에 $Cu^{2+}＄를 사용했을 때 낮은 투습계수와 수분용해도를 나타냈다. 가소재의 종류에 따라서는 수분 흡습에 대한 저항성이 큰 솔비톨을 첨가 했을 때 라이너지의 수분저항성이 유의적인 차이를 보이며 증가하였다.

Keywords

References

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