Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Improvement of Multiply Board Properties with Starch Spraying

전분 분무기술을 통한 다층지의 물성개선

  • Lee, Hak-Lae (Dept. of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University) ;
  • Ryu, Jeong-Yong (Chemical biotechnology research center, Korea Research Institute of Chemical Technology)
  • 이학래 (서울대학교 농업생명과학대학 신림과학부) ;
  • 류정용 (한국화학연구원 바이오정밀화학연구센터)
  • Published : 2007.09.30
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Abstract

Frequently spraying of natural starch slurry onto the formed wet web has been adopted to improve properties of paperboards. This conventional starch spraying technique, however, becomes less effective in strength improvement. In this study the effects of various factors including wet web dryness, quantity of starch slurry sprayed, and drying temperature on paperboard properties were investigated. Migration of starch granules into the webs appeared to cause a reduction in plybond strength when the web dryness was lower than this level. Wet webs should contain enough water to swell the starch granules, and at the same time they should be heated to a temperature high enough for complete cooking of the sprayed starches to occur. This suggested that preheating of the wet web can be employed to improve the plybond strength.

Keywords

References

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