Studies on Disintegration of Korean Old Corrugated Container(KOCC) Using a Pilot Screen

Tai Ju Lee; Yun Seok Nam; Jae Min Sim; Jeong Yong Ryu

doi:10.7584/ktappi.2016.48.3.014

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Studies on Disintegration of Korean Old Corrugated Container(KOCC) Using a Pilot Screen 파일롯 스크린을 활용한 KOCC 해리 효율 연구

30 June 2016. pp. 14-22

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Abstract

Pulping is a stage that can change fibrous raw materials into pumpable slurry. Recovered paper can be defibrated to individual fibers by shear stress generated by rotation of a rotor and water. Disintegration of recovered paper is more complicated than that of chemical pulp. When disintegration of recovered paper is poor, screening and cleaning efficiency will be worse and properties of paper will also be deteriorated. Therefore, pulping is an important treatment for improvement of availability of recovered paper and process runnability. In this study, degrees of disintegration of KOCC obtained from a linerboard mill was analyzed with a pilot-scale screen. Flake removal of KOCC slurry was performed by a pilot screen. Simple pumping action gave a positive effect on disintegration of KOCC. After pumping for 10 minutes, paper strength increased without the change of water retention value and fibrillation of KOCC slurry. This phenomena can be explained by modification of hornified surface of KOCC fibers by shear stress generated by pumping. Consequently, disintegration efficiency of KOCC can be enhanced by control of retention time at pulper or an agitation power at chests of papermaking process.

Keywords

KOCC

disintegration

pilot screen

pumping

shear stress

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 48
No :3
Pages :14-22
Received Date : 2016-05-12
Revised Date : 2016-06-07
Accepted Date : 2016-06-13
DOI :https://doi.org/10.7584/ktappi.2016.48.3.014

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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Literature Cited