Analysis of Modern Document Paper for Identification of Counterfeit Document ( II ) : Fiber Identification

Kyoung-Hwa Choi; Jae-Hoon Lee; Jeong-Yong Ryu

doi:10.7584/JKTAPPI.2018.08.50.4.15

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Analysis of Modern Document Paper for Identification of Counterfeit Document ( II ) : Fiber Identification 위조문서 감별을 위한 현대 문서용지 특성 분석 ( II ) : 섬유원료 분석

30 August 2018. pp. 15-24

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Abstract

In order to investigate the characteristics of modern paper, the fiber type and blending ratio of the domestic paper document samples for which the year of publication has been confirmed were examined. In the results, major fibers including softwood bleached kraft pulp (SwBKP), hardwood bleached kraft pulp (HwBKP) and bleached mechanical pulp (MP) were found to be used in modern paper. SwBKP has been steadily used up to 23% of the total fiber in modern paper to improve paper strength. Prior to 1980, MP was used as the main fiber furnish of the document paper.

However, since 1980, it has changed from MP to HwBKP. This change is presumably due to the high lignin content of the mechanical pulp that causes fast color reversion. It also appears to be affected by increasing consumer demand for high quality such as high brightness and excellent printing property. However, some samples produced after 1980 still contain small amounts of MP fibers. Since most of the pulp used in Korean paper mills is imported pulp, a small amount of MP is sometimes used to reduce production costs. To increase the reliability of this study, we need to increase and to update data base continuously.

Keywords

Document paper

fiber identification

mixing ratio of fibers

“C” stain test

weight factor

counterfeit document

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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 : 50
No :4
Pages :15-24
Received Date : 2018-07-16
Revised Date : 2018-08-14
Accepted Date : 2018-08-16
DOI :https://doi.org/10.7584/JKTAPPI.2018.08.50.4.15

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

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Literature Cited