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2016 Vol.48, Issue 5 Preview Page
Harmful Chemical Residue and Printability of Different Textbook Papers
Young-Baeck Ha1
,
Jung-Yong Ryu2
,
Chang-Keun Kim2
,
Hyoung-Jin Kim†
Dept. of Forest Products and Biotechnology, College of Forest Science, Kookmin University, Seoul
1Prinpia Co., Ltd., R&D Lab., Seoul
2Kangwon National University, Changgang Institute of Paper Science & Technology, Gangwon-Do
†E-mail: hyjikim@kookmin.ac.kr
30 October 2016. pp. 104-116
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Abstract

Paper mills are currently pressed to reduce costs because of lack of resources and rising oil prices. Accordingly, paper mills are increasing the quantity of low-priced pulp using a ratio with relatively low whiteness by decreasing the use of high-priced, high-quality pulp. To solve the problem of deteriorated whiteness, paper mills regularly use a fluorescent whitening agent. In addition, with the increase of resource recycling and environmental problems, interest is growing in the use of recycled paper, which partially or completely contains recycled pulp.

In this study, we investigated the content of hazardous heavy metals in recycled paper and paper stock produced in domestic paper mills and determined if other residues that are harmful to human health are present. Currently, no regulated minimum value is given for fluorescent whitening agents in Korea nor does sufficient research on the toxicity of these agents exist. Determining the amount of ink residue contained in recycled paper as well as the extent of harmful chemical residue resulting from the deinking and bleaching processes is necessary. This research also determined whether other chemicals added when producing recycled paper remained and subsequently analyzed the organic volatile compounds in the recycled paper and the existing produced paper to evaluate risk. We examined the influence of using waste paper on printing properties by performing comparative research on printing quality, e.g., printing color reproducibility of an existing textbook paper and recycled paper containing 30% old paper, trapping, contrast, halftone dot reproducibility, gloss, and rear shining.

Test results concluded that fluorescent material, hazardous heavy metals, and the quantity of detected volatile organic material were not present at levels harmful to human health.

키워드
Printability
harmful residue
deinking ink
heavy metal
textbook paper
References

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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 :5
  • Pages :104-116
  • Received Date : 2016-10-05
  • Revised Date : 2016-10-25
  • Accepted Date : 2016-10-26
  • DOI :https://doi.org/10.7584/jktappi.2016.10.48.5.104
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