Improvement of Printability with Designing the Multi-layer Coating Structure (Ⅲ) : Effect of Sorption Behavior of Pre-coated Layer on the Mottle Index and Printability of Top-coated Layer

Sun-Kyung Kim; Jong Myoung Won; Yong-Kyu Lee

doi:10.7584/jktappi.2016.10.48.5.76

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2016 Vol.48, Issue 5 Preview Page Next Page

Improvement of Printability with Designing the Multi-layer Coating Structure (Ⅲ) : Effect of Sorption Behavior of Pre-coated Layer on the Mottle Index and Printability of Top-coated Layer 다층도공층의 설계에 의한 인쇄적성 개선(제3보) : 프리코팅층의 흡수거동이 탑코팅층의 모틀지수와 인쇄적성에 미치는 영향

30 October 2016. pp. 76-84

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Abstract

This study was carried out in order to investigate the effect of sorption behavior of pre-coated layer on the mottle index of top-coated layer and final printability. The coated paper with five different pigments and four different latices were prepared. The sorption behavior of pre- and top-coated paper was elucidated with using PEA (print evenness analyzer).

The pigment properties and Tg of binder in pre-coating layer were the important factors to control the sorption property of pre-coated layer. Properties of pre-coated layer was affected to top-coated layer. The water adsorption was controlled with replacing pigment and binder. Application of smaller pigments and binder of lower Tg brought about the lowest and uniform water sorption property. There were positive correlation between the absorption ability of pre-coated layer and the mottle index of top-coated layer. These results indicate that final printability and properties of top-coated layer can be improved by replacing the pigment and binder with smaller pigments and low Tg binder to the pre-coated layer.

Keywords

Multi-layer coating structure

pre-coated layer

mottle

PEA

sorption behavior

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 :76-84
Received Date : 2016-09-27
Revised Date : 2016-10-23
Accepted Date : 2016-10-24
DOI :https://doi.org/10.7584/jktappi.2016.10.48.5.76

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

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