Effect of Characteristics of Base Paper and Coating Condition on Coatability of Cellulose Nanofibrils

Heetae Park; Kyujeong Sim; Jegon Lee; Hye Jung Youn

doi:10.7584/JKTAPPI.2018.10.50.5.152

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2018 Vol.50, Issue 5 Preview Page Next Page

Effect of Characteristics of Base Paper and Coating Condition on Coatability of Cellulose Nanofibrils 원지 특성과 도공 조건이 셀룰로오스 나노피브릴 도공적성에 미치는 영향

30 October 2018. pp. 152-160

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Abstract

To investigate the application potential of cellulose nanofibrils (CNF) as barrier coating agent, the coatability of CNF on two different types of base paper (linerboard and woodfree base paper) was evaluated in terms of the coat weight and the surface properties of CNF-coated paper. The consistency of CNF suspension, the applicator type and the addition of a rheology modifier were controlled. The characteristics of a base paper, in particular, the hydrophobicity of a base paper affected the CNF coat weight. Linerboard with low water contact angle showed high coat weight with linear relationship of rod number. On the other hand, woodfree base paper with high water contact angle showed a limit to increase the coat weight. The consistency of CNF suspension did not have a significant effect on the coat weight, but affected the surface roughness of the coated paper. The addition of a rheology modifier into CNF suspension could increased the coat weight a little and improved the surface smoothness. Among diverse factors examined in this study, it was demonstrated that the applicator type is the most important factor to the coat weight. By increasing the rod number and adopting the nip applicator with high gap size, the coat weight of CNF on the base paper could be increased.

Keywords

Cellulose nanofibrils

base paper

barrier coating

coatability

coat weight

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 : 50
No :5
Pages :152-160
Received Date : 2018-10-10
Revised Date : 2018-10-22
Accepted Date : 2018-10-24
DOI :https://doi.org/10.7584/JKTAPPI.2018.10.50.5.152

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

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Literature Cited