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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korea Technical Association of The Pulp and Paper Industry
Journal Basic Information
Journal DOI :
Korea Technical Association of the Pulp and Paper Industry
Editor in Chief :
Volume & Issues
Volume 45, Issue 6 - Dec 2013
Volume 45, Issue 5 - Oct 2013
Volume 45, Issue 4 - Aug 2013
Volume 45, Issue 3 - Jun 2013
Volume 45, Issue 2 - Apr 2013
Volume 45, Issue 1 - Feb 2013
Selecting the target year
Use of Calcium Carbonate for Improving Solid Content of KOCC Wet Web
Hwang, In-Young ; Ji, Sung-Gil ; Seo, Yung-Bum ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 1~9
DOI : 10.7584/ktappi.2013.45.6.001
For the manufacture of linerboard with 100% KOCC, we tried to increase the solid content of wet web by employing GCC (grounded calcium carbonate) in the fiber furnish to save drying energy. Three different diameters of GCC, namely, 5, 10, and
, were used. To complement the strength loss by the addition of GCC, cationic starch and refining treatment were tried. It was found that the addition of
dia. GCC to KOCC for
basis weight sheets increased the solid content of the furnish about 1-1.5% with better bulk and drainage properties. The loss of strength properties were compensated by the application of cationic starch and/or refining process to the KOCC furnish. The dia. of GCC of
was, however, too large to make smooth surface of the sample sheet. So, the optimization process was required before implementing the results to the mill by selecting proper diameter and shape of the calcium carbonate.
Evaluation of Dewaxing and Strengthening Treatments for Stabilization of Aged Beeswax-treated Hanji
Jeong, Hye Young ; Go, In Hee ; Nam, Hyun Ju ; Choi, Kyoung Hwa ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 10~16
DOI : 10.7584/ktappi.2013.45.6.010
This study aims to carry out the final evaluation on the deterioration stability of dewaxing and strengthening treatments devised to conserve and restore the beeswax-treated volumes of the Annals of the Joseon Dynasty. Thus, this study artificially deteriorated dewaxed Hanji, strengthened Hanji and beeswax-treated Hanji with optimized processing conditions applied, and comparatively analyzed the deterioration characteristics of each kind of Hanji. As a result of this study, it turned out that there was the loss of physical strength and the value of
was increased and the values of
were decreased from removing beeswax after dewaxing by supercritical fluid extraction (SFE). Also deteriorated strength during dewaxing was reinforced by strengthening treatment with methylcellulose and it showed higher strength than beeswax-treated Hanji. From the evaluation on deterioration stability after dewaxing and strengthening, it turned out that deterioration stability of strengthened Hanji is the superior. Therefore, it is presumed that conservation of aged beeswax-treated Hanji can be improved and extended when dewaxing and strengthening are applied under optimum conditions.
Abatement of Metal Ion Contents from Cotton Linter for the Manufacture of Regenerated Cellulose
Park, Hee Jeong ; Son, Ha Neul ; Choi, Jin Sung ; Seo, Yung Bum ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 17~23
DOI : 10.7584/ktappi.2013.45.6.017
The reduction of metal ion from the cotton linter for the preparation of NMMO (N-methylmorpholine N-oxide)-based dissolving pulp was investigated. The NMMO-based dissolving pulp was usually used for the manufacture of high quality fabrics, and need to have high alpha cellulose content and high brightness. NMMO, which is environmentally friendly, and reusable after recovering process, is very sensitive to the metal ions such as Cu, Fe, Mg, and Cr. Electron beam, sulfuric acid, acetic acid, and ozone treatment before bleaching were used and the concentration changes of the metal ions were compared to that of EDTA, a chelating agent. It was found that both acid treatments (sulfuric and acetic acid) were very effective and comparable to EDTA treatment at the same dosage in metal ion reduction, but electron beam and ozone treatment were not. The sulfuric acid treatment turned out to be effective in metal ion reduction, and most inexpensive.
Effect of Precipitated Calcium Carbonate on Paper Properties and Drying Energy Reduction of Duplex-board
Lee, Ji-Young ; Kim, Young-Hun ; Lee, Se-Ran ; Kim, Chul-Hwan ; Sung, Yong Joo ; Lim, Gi-Baek ; Kim, Sun-Young ; Kim, Jun-Sik ; Park, Jong-Hea ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 24~29
DOI : 10.7584/ktappi.2013.45.6.024
In this study, we investigated the applicability of PCC(precipitated calcium carbonate) as a raw material for the manufacture of duplex-board. Papers were made with white-ledger stock collected from the actual duplex-board mill and PCC in a laboratory, and paper properties including bulk, ash content, tensile strength, burst strength, brightness and opacity were measured. The effect of PCC on the drying energy of duplex-board was also determined by measuring the moisture content of wet web and calculating drying energy reduction. PCC increased bulk and ISO brightness significantly, which means PCC can decrease the use of virgin pulp and recycled fibers. PCC decreased the moisture content of wet web, which means PCC can decrease drying energy consumption. However, paper strength decreased as addition levels of PCC addition increased. Therefore, the addition level of PCC must be determined considering the reduction of paper strengths.
Manufacture of Specialty Paper with Hemp Bast Fiber Cultivated in Korea (Part 1) - Characteristics of Hemp-Wood Paper by Soda Pulping -
Lee, Dah-Hee ; Lee, Myoung-Ku ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 30~35
DOI : 10.7584/ktappi.2013.45.6.030
To conserve wood resources for papermaking, chemical compositions of the hemp (Cannabis sativa L.) bast fiber cultivated in Korea such as holocellulose,
-cellulose, lignin, alcohol-benzene extractives, hot and cold water extractives, and ash contents were investigated to manufacture the specialty packaging paper effectively. Significantly very low klason lignin content of 3.3% was accomplished by removing of the outer shell of bark. Laboratory soda pulping method which is very useful for the nonwood fiber was adapted, and it was found that there was no significant difference in both kappa number and H-factor between 25% and 30% NaOH charge. Hemp pulp cooked with the laboratory digester in 25% NaOH at
were mixed together with the wood pulp(NBKP:LBKP=1:1) in order to find the optimum mixture ratio which exhibited acceptable paper strength properties such as tensile index, burst index, and tear strength. When 10% of hemp soda pulps was mixed with 90% of wood pulps comprised of SwBKP and HwBKP (1:1), all physical strength increased significantly. The physical strength decreased as the amount of hemp pulp increased because the cell wall of bast fiber is very thick which causes low conformability and low fiber-fiber bonding. These results showed that paper made of hemp-wood pulp can be used for the specialty packaging paper which requires both the characteristic surface properties and the high physical strength of hemp fiber.
Production of Environment-Friendly Coated Paper with PCC Manufactured with Emission Gas
Shin, Gil Jae ; Won, Jong Myoung ; Lee, Yong Kyu ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 36~43
DOI : 10.7584/ktappi.2013.45.6.036
Effects of blending of PCC manufactured with emission gas occurred at mill on the characteristics of coating color, optical and printing properties of coated paper were investigated in order to evaluate the possibility of its use as a raw material for producing environmentally friendly coated paper. Low shear viscosity and water retention value of ground PCC 1(d50 =
) were higher than those of ground PCC 2(d50 =
). Ink set properties of ground PCC 1 and ground PCC 2 were inferior to that of PCC 3. Thus, the reducing of particle size was required in order to overcome the inferior ink set properties. Ground PCC 1 had a similar properties to clay, and it showed the possibility that ground PCC 1 could be used to produce matte grade coated papers. However, it was required to improve the stability(particle shape, particle size, and compatibility with chemicals used in coating color formulation) in the case of blending with GCC in order to keep the qualities of coated paper.
Morphological and Physical Properties of ONP Treated by CaCO
In-situ Precipitation Method
Lee, Young Ho ; Jung, Jae Kwon ; Lee, Ki Seung ; Seo, Yung Bum ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 44~54
DOI : 10.7584/ktappi.2013.45.6.044
Replacing OMG (old magazine) to ONP (old newspaper) by raising optical property through
in-situ precipitation method in white duplex board presents cost reduction and possible drying energy saving. The strength property impairment by the presence of
could be supplemented by the fiber furnish treatment or strength polymer addition. In
in-situ precipitation of ONP, it was found from morphological study using FlowCAM, an image analyzer, that most of calcium carbonate were formed on the fines, and made the size of the fines larger. For the case of forming calcium carbonate only on the fractionated fines, the size of the fines were the biggest, and there were more clean surface areas available for bonding for the fractionated long fibers when fractionated fibers and fines were regrouped to make paper.
Characteristics of Commercial Leaflets Sandwiched in Newspaper (Part 1) - The Size and Printing Types of Leaflets according to Business -
Yoon, Seung-Lak ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 55~63
DOI : 10.7584/ktappi.2013.45.6.055
To offer a basic information for the fibers of commercial leaflets, authors examined and analyzed the distribution, size, and printing types of leaflets sandwiched in the newspaper. The number of different leaflet size were almost 30 in two years including B5 (
), A4 (
), B4, (
), A3 (
), and large flyers such as
. The number of different leaflets size were 25 in 2011, which was reduced to 15 in 2012. Both the number and amount of the leaflets were reduced. The high quality leaflets were issued and distributed in the corporate sector and the leaflets issued in other sectors such as shopkeeping, restaurant business, educational institutions were one-sided leaflets printed on single side of the paper. Compared to the previous year, large stores showed the increased number of leaflets but the number of leaflets from restaurant business and educational institutions and building trade were decreased.
Change in the Functional Properties of Mulching Paper by the Addition of Inorganic Materials
Sung, Yong Joo ; Jung, Woong-Gi ; Lee, Ji-Young ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 64~71
DOI : 10.7584/ktappi.2013.45.6.064
The biodegradable mulching paper could be applied for the environmental friendly agriculture as an alternative to the current vinyl mulching. In order to increase the usability of the mulching paper, the effects of the addition of various inorganic materials on the functionality of the mulching paper were evaluated in terms of practical benefits. The blend of carbonized rice husk powder and perlite resulted in the higher value in the air permeability of the mulching paper, which would be important for the health of plant root. The heat conservative of the mulching paper could be improved by adding the bottom ash or the fly ash because of the pore structure of the ashes. The pH of acidic soil could be neutralized by using the mulching paper containing paper-mill sludge ash or fly ash. The various results showed the addition of the inorganic materials could improve the functional properties of the mulching paper.
Effects of Mixing Ratio of Bagasse Pulp on Tissue Paper's Properties
Kim, Jeong-Jung ; Han, Yun-Seok ; Jeon, Byeong-Hoon ; Han, Ki-Young ; Jung, Chul-Hun ; Park, Jong-Moon ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 72~77
DOI : 10.7584/ktappi.2013.45.6.072
Tissue and paper manufacturing companies have common problems with increasing cost of imported virgin pulp and the restriction of using woods in the forest. Possibility of using bagasse pulp for solving those problems was studied. In order to reduce the production cost and study the dependency on pulps, bagasse pulp has been studied for mixing with Sw-BKP and Hw-BKP. Optimum blending ratio of wood pulps and bagasse pulp to enhance tissue properties were analyzed. Various properties of the hand sheet after blending of wood pulp and bagasse pulp were measured. As results, the bagasse pulp could substitute the hard wood pulp with similar properties of tissue. Therefore, we judged that the bagasse pulp was suitable for replacement of the hardwood pulp.
Quantitative Analysis of Soluble Residues by Correction of Starch Content in Paperboard Grade
Lim, Chae-Hoon ; Park, Joung-Yoon ; Lee, Tai-Ju ; Um, Gi Jeung ; Kim, Hyoung-Jin ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 78~87
DOI : 10.7584/ktappi.2013.45.6.078
Even though the notice No. 2010-11 of the Ministry of Food and Drug Safety Administration that has been applied to analyze the content of the water soluble residue eluted from multi-layer paperboard was abolished in 2011, its application for the analysis on evaporation residue is still valid. There are very high possibilities that the noticed existing method gives the misleading result on the evaporation residue due to the water soluble starch eluted from the multi-layer paperboard. The quantitative analysis on water-soluble residue with starch content correction has been carried in the study using UV/Vis spectroscopy and HPLC. The UV/Vis spectroscopy absorbance analysis showed the large amount of the oxidized starch obtained from the aqueous residue eluted out of the multi-layer paperboard after the iodine,
-amylase reaction, and starch hydrolysis. The residual content decreased by the correction through the enzyme hydrolysis.
Effect of Beating and Water Impregnation on Fiber Swelling and Paper Properties
Choi, Eun-Yeon ; Cho, Byoung-Uk ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 6, 2013, Pages 88~95
DOI : 10.7584/ktappi.2013.45.6.088
Effects of beating and water immersion time on fiber swelling and paper properties were elucidated for the fundamental study of producing high bulk paper. Chemical pulps were beaten for various freeness and the beaten pulp was immersed in water up to 24 hours. Fiber swelling was evaluated by measuring water retention value (WRV). It was found that fiber swelling, bulk and paper strength were quickly changed at the initial stage of beating. Immersion in water did not significantly increase WRV, paper density and strength, implying that soaking in water alone could not effectively swell fiber wall. In order to swell further, hydrogen bonds between fibrils in fiber wall and hence fiber wall structure shall be broken by mechanical force during beating.