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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
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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
Study on CMS Application in Hybrid UV Waterless Off-Set Printing
Koo, Chul-Whoi ; Cho, Ga-Ram ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 1~13
DOI : 10.7584/ktappi.2013.45.5.001
This study found fit optimum C, M, Y, K solid density and
value to paper & ink as well as check about printing machine state for color management in H-UV waterless off-set printing first. These values applied to GRACoL G7 calibration method. This method is one of color standard management method of printing. GRACoL G7 calibration method is possible stable tone reappearance by controlling gray balance by NPDC(Natural Printing Density Curve). Also, this study used values to make device profile as result that is gotten by application of GRACoL G7 calibration method. This profile was applied to CMS(Color Management System) of H-UV waterless off-set printing, and the result was possible by color management that correspond in printing quality standard of ISO 12647-2 and GRACol 2006 specifications.
Retention Performance of Nanocoated GCC with Positive Charge
Lee, Jegon ; Sim, Kyujeong ; Lee, Hak Lae ; Youn, Hye Jung ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 14~22
DOI : 10.7584/ktappi.2013.45.5.014
In this study, we investigated retention characteristics of nanocoated GCC that was positively modified by Layer-by-Layer (LbL) multilayering process. Three layers were formed onto GCC particles with poly-DADMAC/PSS/poly-DADMAC (PD3) and C-starch/A-PAM/C-starch (CS3) systems, respectively. Untreated GCC, PD3 GCC (strongly positive charge) and CS3 GCC (weekly positive charge) were retained on pulp fibers under single retention system or microparticle retention system conditions. In single retention system, PD3 particles were not affected by cationic retention aid due to their strong positive charge, whereas CS3 particles reacted with cationic retention aid due to anionic sites on the surface of the weekly positive particles. In a microparticle retention system, positively modified GCC (PD3 and CS3) showed higher retention level than untreated GCC at the same dosage of retention aid. The cationic surface of GCC particles were more reacted with bentonite so the deposition onto pulp fibers was improved. In addition, the retention level of nanocoated GCC was increased with maintaining good formation.
Improvements of Strength and Retention of Cotton Handsheet by Additives(I) - Characteristics of Strength and Retention by Additives -
Cho, Yu-Je ; Kim, Kang-Jae ; Eom, Tae-Jin ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 23~29
DOI : 10.7584/ktappi.2013.45.5.023
Various properties of cotton handsheet were measured to solve the problem of deformation while storing guar gum(natural polymer) and to improve strength and retention by synthetic polymers(A-PAM, C-PAM, CMC). The results of this study were summarized as follow. The cotton handsheet with 0.2% of A-PAM showed the best tensile index and folding endurance. Retention of fines and fillers in pulp slurry with 0.2% and 0.3% of A-PAM were more excellent than that with guar gum.
Identification of Hydrophobic Components in Cambodian Kapok Fiber
Sung, Yong Joo ; Yun, Su-Young ; Oh, Sung-Hoon ; Shin, Soo-Jeong ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 30~36
DOI : 10.7584/ktappi.2013.45.5.030
Hydrophobic property of Kapok fiber was investigated by sequential removal of its components by different extraction methods. Acetone extraction for the removal of the hydrophobic extractives, holo-cel-lulose preparation after the removal of lignin and xylan extraction by potassium hydroxide was applied. The degree of hydrophobicity of each samples were measured by the water sorption ability. The water sorption ability of Kapok fiber was increased by the sequential treatment of acetone extraction, holocellulose preparation and xylan removal. Based on holocellulose compositional analysis by
-NMR spectroscopic method, the unusual high amount of the acetyl groups in the holocellulose of Kapok partially contributed to the hydrophobicity of Kapok holocellulose fiber.
Effect of Vinyl Acetate-Ethylene(VAE) Emulsion on Coated Paper Properties
Lee, Yong-Kyu ; Won, Jong Myoung ; Lee, Woo-Jae ; Choi, Yong-Hae ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 37~43
DOI : 10.7584/ktappi.2013.45.5.037
This study was focused on applying a new paper coating binder, vinyl acetate-ethylene(VAE) emulsion, with SB-latex and acrylic emulsion for paper coating application. VAE emulsion has a low monomer cost and is non-toxic chemical than conventional adhesive for paper coating such as styrene-butadiene latex( SB-latex) and acrylic emulsion. We conducted double coating in order to test VAE emulsion, which was applied on top surface only. The results showed that optical properties of the coated paper with VAE were similar with the SB-latex binders. In case of bonding strength, dry-pick of the coated paper with VAE showed almost same with other binders while wet-pick of the coated paper with VAE had a little bit lower strength than that with SB-latex.
Modification of KOCC with Ultrasonic Wave Treatment
Ming, He ; Lee, Yong-Kyu ; Won, Jong Myoung ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 44~48
DOI : 10.7584/ktappi.2013.45.5.044
Ultrasonic treatment of KOCC was tried to explore the possibility for improvement of KOCC quality as a raw material for making industrial packaging paper and paperboard. The effect of pH, stock consistencies and treatment times on the ultrasonic response of KOCC were investigated. WRV, apparent density, tensile index and burst index were improved as pH of KOCC slurry is increased. However highest tear index and stiffness were obtained at pH 8. It was also found that the highest WRV and strength properties could be obtained at 0.5% of KOCC consistency during ultrasonic treatment. WRV and most strength properties were improved with ultrasonic treatment time. It was found that ultrasonic treatment can be used as a useful mean for KOCC modificaton.
The Study of Restoration Technique of Wax-Treated Volume for the Annals of the Joseon Dynasty (III) -Evaluation of Durability of Korean Traditional Paper using Moist-heat Aging Treatment-
Jeong, Seon-Hwa ; Jeong, Sun-Young ; Seo, Jin-Ho ; Jeong, So-Young ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 49~55
DOI : 10.7584/ktappi.2013.45.5.049
To explore the paper materials for restoration of the Annals of the Joseon Dyansty, durability of the three type of the traditional Korean Papers were estimated in this study, through moist heat artificial aging test. Three types(D, F, and G) which showed the best preservation performance in dry heat and UV treatment in the previous study were selected and artificial accelerated aging treatment with moist-heat process was conducted; the viscosity change rate was D>G>F; folding endurance G>D>F;
change rate D>G>F; brightness decrease rate D>G>F, suggesting paper F showed the least change rate in physical/optical properties. Also the CLSM image observation showed fair coherence among fibers and confirmed paper mulberry. And in FDI extraction from each sample, paper F showed the highest value. Overall, paper F (traditional glossy paper) showed the highest stability against thermal treatment. It confirms that paper F is suitable as restoration paper for tributary remains including the annals of the Joseon Dynasty for its steady strength/viscosity decrease rate and color change rate.
Evaluation of Beatability of Two Kinds of Cotton Linter Pulps
Shin, Hyeon-Sik ; Park, Jong-Moon ; Lee, Jin-Ho ; Kim, Jeong-Jung ; Kil, Jung-Ha ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 56~63
DOI : 10.7584/ktappi.2013.45.5.056
In this study, paper mill applicability of two kinds of cotton pulps which have different initial freeness, fiber length and intrinsic fiber strength were investigated. Basic properties such as CED viscosity, fiber length, and crystallinity of major two kinds of cotton pulps were analyzed, and beatability of cotton pulps and physical properties of handsheet made from two kinds of cotton pulps were compared. Laboratory beating was performed at different refining conditions such as refining loads and freenesses. Relationship between beating degree and physical properties of handsheet were compared to seek optimum condition of refining for different cotton pulps application to paper mill.
Effect of Soxhlet Extraction Condition on Dewaxing Efficiency of the Beeswax-Treated Paper
Choi, Kyoung-Hwa ; Jang, Hye-Mi ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 45, issue 5, 2013, Pages 64~70
DOI : 10.7584/ktappi.2013.45.5.064
In this study, the effect of soxhlet extraction on dewaxing of the aged beeswax-treated paper was examined. To do this, soxhlet extraction of the aged beeswax-treated paper performed with different reflux conditions and then measured the dewaxing efficiency and change in the various properties such as tensile strength, folding endurance, color and brightness. Also, an artificial aging test was executed in order to investigate the effect of soxhlet extraction on the preservability of the dewaxed paper. As the result of FT-IR analysis, a peak area of CH and COOH group, which are main band of beeswax, was decreased or removed after soxhlet extraction. The decreasing rate of each peaks were increased depending on reflux time. After dewaxing, the physical property such as MIT type folding endurance and tensile strength was decreased. And
value and brightness were increased while
value were decreased due to the remove of color compounds in beeswax. The more color deviation (
) is expected with higher reflux times. As the result of artificial aging, preservability of two dewaxed papers except of DP_SE(C) sample was higher than that of untreated paper i.e. beeswax-treated paper.