Manufacture and Assessment of High Loading Printing Paper Using GCC-MFC Composites (2) : Effect of GCC-MFC Composites on Physical Properties of High-Loading Printing Paper

Choel Kyu Choi; Sung Jong Yoo; Yong Kyu Lee; Jong Myoung Won

doi:10.7584/JKTAPPI.2019.12.51.6.120

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Manufacture and Assessment of High Loading Printing Paper Using GCC-MFC Composites (2) : Effect of GCC-MFC Composites on Physical Properties of High-Loading Printing Paper 중탄 복합체를 이용한 고충전 인쇄용지 제조(2) : 중탄 복합체가 고충전 인쇄용지의 물성에 미치는 영향

30 December 2019. pp. 120-127

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Abstract

Papermaking filler is used as a very important subsidiary material to improve the opacity and printability of paper, and to reduce energy consumption and production cost. However, the strength of the paper decreases significantly as the ash content increases, and thus making it difficult to increase the amount of filler used. GCC-MFC composites were prepared as a part of increasing ash content without loss of paper strength, and compared with GCC and pre-flocculated GCC. When GCC is used as a filler, it is widely distributed on the surface of the fiber. However, the GCC-MFC composites were distributed in the form of large aggregates in the spaces between the fibers, thereby contribute the reduction of the interference of inter-fiber bonding. As a result, when the GCC-MFC composite was used as a filler, the bulk wass slightly reduced and air resistance was higher compared to the case of using GCC and pre-flocculated GCC, but the tensile strength, the bursting strength and the tear strength were improved. However, the Taber stiffness of paper with pre-flocculated GCC and/or GCC-MFC composites was lower than that of GCC. When applying GCC-MFC prepared with 3% MFC, it was confirmed that the printing paper having superior strength properties than GCC and/or pre-flocculated GCC in the ash content of 20-35% could be manufactured.

Keywords

GCC (ground calcium carbonate)

pre-flocculation

GCC-MFC composite

high loading printing paper

paper properties

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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 : 51
No :6
Pages :120-127
Received Date : 2019-12-05
Revised Date : 2019-12-16
Accepted Date : 2019-12-17
DOI :https://doi.org/10.7584/JKTAPPI.2019.12.51.6.120

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

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Literature Cited