Analysis of Handsheets Formation and Roughness according to the Mixing Ratio and Beating Time of Sw-BKP and Hw-BKP

Hee-Won Kim; Yoon-Taek Oh; Jong-Su Park; Hyung-Jin Kim; Jong-Moon Park

doi:10.7584/JKTAPPI.2019.12.51.6.22

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Analysis of Handsheets Formation and Roughness according to the Mixing Ratio and Beating Time of Sw-BKP and Hw-BKP Sw-BKP, Hw-BKP의 배합비와 고해 시간에 따른 수초지 지합 및 거칠음도 분석

30 December 2019. pp. 22-29

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Abstract

Formation and the surface roughness of paper are important factors to determine the quality of the paper. Formation is determined by an extent of the fiber distribution non-uniformity. which decides three-dimensional structure of paper. If paper has poorly formation, there is a wide change in local basis weight, thickness and physical and chemical properties due to the non-uniformity of fiber distribution and bonding. Formation also affects strength, opacity and printability of paper. The surface roughness of the paper indicates the degree of height deviation in thickness direction. The stylus can be used to measure the profile of the paper surface height directly. The surface roughness SMD (mean absolute deviation from the height average, MAD) and the fractal dimension value (FD value) could be obtained by analyzing the thickness profile of paper. The formation was poor as the softwood pulp ratio increased and the beating time increased. Floc frequency of 1-16 mm size of 100% Sw-BKP handsheet was higher than that of 100% Hw-BKP handsheet. SMD obtained from the height of the paper thickness had a high correlation with the formation. However, FD value of analyzing the profile of thickness height had a low correlation with the formation.

Keywords

Formation

surface roughness

stylus profiling

fractal dimension value

handsheet

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 : 51
No :6
Pages :22-29
Received Date : 2019-10-11
Revised Date : 2019-10-31
Accepted Date : 2019-11-04
DOI :https://doi.org/10.7584/JKTAPPI.2019.12.51.6.22

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

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Literature Cited