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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Aging Characteristics of Grape and Pear Growth Paper Bag

포도, 배 재배용 과수봉지의 열화 특성

  • Ha, Jin-Yang (Namgang Paper Co., Ltd.) ;
  • Chae, Su-Myoung (Gyeongnam Agriculture Meister College) ;
  • Yoon, Seung-Lak (Dept. of Interior Materials Engineering, Gyeongnam National University of Science and Technology)
  • 하진양 (남강제지) ;
  • 채수명 (경남농업마이스터대학) ;
  • 윤승락 (경남과학기술대학교 인테리어재료공학과)
  • Received : 2014.12.05
  • Accepted : 2014.12.19
  • Published : 2014.12.30
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Abstract

The research was performed to investigate the weathering characteristics of fruit growth paper bags. The bags were used to cover fruits such as grapes and pears. And then they were collected after 30 and 60 days exposure at the orchard. The physical and optical properties of the bags tended to decrease with the exposure times. The larger change on the properties were found on the papers exposed for 30 days. The cover paper for pear showed the largest density changes. The air permeability were decreased with the exposure time in all bags. The cover paper for pear showed the very low values of air permeability. The mechanical properties of the fruit bags showed to be gradually decreased with the length of exposure time. The tear index showed the largest differences. The cover paper for pear showed the rapid decrease on the mechanical properties after 60 days of the exposure. The inner paper, however, showed the strength enough to cover the fruits. The precipitation showed more effect on the degradation of fruit growth paper bags than the light hours.

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References

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