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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korea Technical Association of The Pulp and Paper Industry
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Journal DOI :
Korea Technical Association of the Pulp and Paper Industry
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Volume & Issues
Volume 44, Issue 6 - Dec 2012
Volume 44, Issue 5 - Oct 2012
Volume 44, Issue 4 - Aug 2012
Volume 44, Issue 3 - Jun 2012
Volume 44, Issue 2 - Apr 2012
Volume 44, Issue 1 - Feb 2012
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Studies on Physical Properties and Printability of machine-made Hanji Made by Different contents of Paper Mulberry
Kwon, Oh-Hun ; Kim, Hyun-Chel ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 1~7
DOI : 10.7584/ktappi.2012.44.2.001
Hanji made of mulberry fibers has the lower printability due to their long fiber length, the diffusible property of ink, and low smoothness. This study was carried out to analyze the physical and optical properties of machine-made Hanji controlled by the different contents of paper mulberry 20, 40, 60, 80 and 100%. In this study, the results of comparing machine-made Hanji controlled by the different contents of
with commercial paper and inkjet coated paper are as following: Tearing strength of machine-made Hanji is higher than domestic paper and inkjet coated paper. By increasing paper mulberry contents of machine-made Hanji appeared that tensile strength increased and smoothness gradually decreased. Printability of machine-made Hanji is less than domestic paper and inkjet coated paper. However, there were significant possibility to use for printing paper.
Effect of Branch Degree of Cationic Acrylamide Copolymers on Flocculation Properties
Son, Dong-Jin ; Kim, Bong-Yong ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 8~17
DOI : 10.7584/ktappi.2012.44.2.008
Three kinds of cationic acrylamide copolymer with different branch degree were prepared controlling the dosage of N, N'-methylenebisacrylamide. The physical characteristics of the branch-degree-modified copolymers were analyzed by intrinsic viscosity and charge density. The branch degree measurements were investigated by applying the colloidal titration phenomena using a spectrophotometer and comparison with the cationic regain measurement method. The results showed that the absorbance behaviors of spectrophotometer were distinctively different with the branch degree of copolymers. Also, the branch degree determinations and molecular structure estimations of the copolymers were numerically measured by applying the titration phenomena using a spectrophotometer. Finally, three kinds of branch-degree-modified copolymers were applied to flocculation test using arbocel micro pulp for the determination of flocculation behavior by different morphology of cationic acrylamide copolymers.
Automatic Test Method of Sizing Degree by Analysis of Liquid Penetration and its Surface Behavior
Lee, Ji-Young ; Kim, Gyung-Chul ; Kim, Chul-Hwan ; Sheikh, M.I. ; Park, Hyun-Jin ; Kim, Sung-Ho ; Sim, Sung-Woong ; Cho, Hu-Seung ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 18~28
DOI : 10.7584/ktappi.2012.44.2.018
This study was to develop a novel automatic system for measuring St
ckigt sizing degree and contact angle at a time. The conventional methods to measure sizing degree had serious problems in obtaining significant differences according to different dosages of a sizing agent, and moreover they disclosed unique limitation due to liquid types used and tester's subjectivity. However, the newly developed system could get reproducible results through total automation of all procedures including liquid dropping, image acquisition and measurement of both St
ckigt sizing degree and contact angle. For the St
ckigt sizing test, the automatic system could measure sizing degree with more definite differences according to different dosage of AKD, compared to the conventional method. For the contact angle test, the automatic system showed a similar trend to the conventional method but had smaller contact angles due to distortion of an image focus by a sheet curl than the conventional testing machine. The problem from the image out of focus due to specimen curl will be overcome with adopting a new specimen holder for the future system.
Manufacture of Water-Resistant Corrugated Board Boxes for Agricultural Products in the Cold Chain System
Jo, Jung-Yeon ; Min, Choon-Ki ; Shin, Jun-Seop ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 29~34
DOI : 10.7584/ktappi.2012.44.2.029
For the purpose of developing liner board for water-resistant corrugated board in the cold chain system, several types of base paper for corrugated board were purchased from the market and 6 different boards were produced in the paperboard mill by applying the chemicals on the base paper. Then, water-moisture resistant performance and physical properties of the boards were compared each other. The liner board which is dried at high temperature with pressure by Condebelt papermaking system(CK paper) showed a superior performance in strength over common liner boards. Strength of the board increased by surface chemical treatment up to 60% of compressive strength and 30% of bursting strength. Starch insolubilization with Ammonium-Zirconium Carbonate(AZC) and surface coating with a surface size and a moisture resistant chemical on CK paper showed the best result. Therefore, this method was recommended to produce the outer liner board for water -resistant corrugated board.
Physicochemical Characteristics Study on Wheat Starch Adhesive - Based on Wheat Starch Adhesive fermenting period less than two years-
Chung, Yong-Jae ; Kim, Min-Jeong ; Nam, Seo-Jin ; Jeong, Seon-Hye ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 35~41
DOI : 10.7584/ktappi.2012.44.2.035
In this study, wheat starch adhesive was investigated the shape and structure of starch, the difference in characteristics such as chemical composition according to the fermenting period of 2 years or less. The fermenting period of wheat starch adhesive is 1 month, 2months, 4 months,6 months, 1 year, 2years old. The wheat starch adhesives were investigated total sugar contents, protein contents, properties of gelatinization, pH, the bonding strength and also observed the surface of starch,. As a result, the longer the fermenting period, the increasing in total sugar contents and decreasing in protein contents. The particle shape and surface were similar regardless of the period. In addition, properties of gelatinization according to the fermenting period also could not see the difference. In pH of the adhesive, the longer the fermenting period, the near to neutral. The adhesive was high bonding strength in 4 months, but appeared a tendency to decrease from 6 months. The damage assessment through the UV degradation in regard to the papers applied the adhesive was accomplished. Color difference was no change except 1 month. The 4 months and 6 months' pH was each 5.0, 5.2. But it was near to neutral that the 12 months and 24 months' pH was each 5.7, 5.9.
The Study of the Printability on the Phenol Free Heat-Set Web Inks(I) - Analysis by the printability testing -
Ha, Young-Baeck ; Oh, Sung-Sang ; Lee, Won-Jae ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 42~48
DOI : 10.7584/ktappi.2012.44.2.042
In the 21st century, the printing industry as well as the IT industry has made rapid development. However, despite these technological advancement in the printing industry, it is still harmful for the environment, the state regulation is insufficient. Therefore, we studied the printability for the existing heat-set web inks and the newly created phenol-free eco-inks. This ink was made by reacting rosin and unsaturated dibasic acid and ester reactant, ester reactant was used instead of phenol. Printability test were used in the IGT printability tester. Experimental conditions, the temperature
, humidity 57% under conditions of 0.6cc of ink supply, the print speed 1m/sec, pressures were set at 250N. As results of this study, we were able to get the following conclusions. The properties of phenol-free ink is the same as the existing inks. So we are thought to improve some characteristics such as dispersion, able to replace the existing ink.
Investigation into Methods for reducing Greenhouse Gas Emission in Paper Industry with Development of Greenhouse Gas Inventory
Kim, Dong-Seop ; Sung, Yong-Joo ; Lee, Joon-Woo ; Kim, Se-Bin ; Park, Gwan-Soo ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 49~57
DOI : 10.7584/ktappi.2012.44.2.049
The reduction of greenhouse gas emission currently becomes more urgent task for Korean Industries, especially for the paper industries because of the new regulation based on the low carbon-green growth law. In order to reduce effectively the greenhouse gas emission, the development of greenhouse gas emission inventory has been widely considered as one of the basic processes and has been applied to many industries. In this study, the fundamental schemes and the cases of greenhouse gas inventories were investigated. Especially, the major considering units for paper industries were suggested to develope greenhouse emission inventory of paper industry.
Development of New Powdered Additive and Its Application for Improving the Paperboard Bulk and Reducing Drying Energy (I) -Analysis of Chemical and Physical Properties of Brewers Grain -
Lee, Ji-Young ; Kim, Chul-Hwan ; Choi, Jae-Sung ; Kim, Byeong-Ho ; Lim, Gi-Baek ; Kim, Da-Mi ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 58~66
DOI : 10.7584/ktappi.2012.44.2.058
Brewers grain is a byproduct of beer brewing and consists primarily of grain husks, pericarp, and fragments of endosperm. Although this material is consumed by animals and used as fertilizer, a large amount of brewers grain is simply discarded. Therefore, new methods for utilizing this fibrous resource should be pursued. In this study, we examined the potential utilization of brewers grain as an additive in the paperboard industry by determining the chemical composition of brewers grain and the physical properties of brewers grain powders after grinding with two types of grinders. We found that brewers grain had a lower holocellulose content and higher lignin content and intermediate ash content when compared to other biomass materials, and did not contain any contaminants that would interfere with the papermaking process. Particles had a higher fiber length, less fiber width, and narrower shape factor distribution when ground by a blender type grinder than by a pin crusher type grinder. The blender type grinder was concluded to make regular brewers grain particles appropriate for papermaking.
Analysis of Starch Properties and Application of Cross-linking Agent for Improving Adhesive Strength of Corrugated Board
Jung, Chul-Hun ; Park, Jong-Moon ; Lee, Jin-Ho ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 44, issue 2, 2012, Pages 67~73
DOI : 10.7584/ktappi.2012.44.2.067
Structural stability and shock absorption are important properties for corrugated board. In order to maintain structural stability, adhesive properties between top/bottom liners and corrugated medium are not only essential but also important for productivity and product quality. Borax has been an essential ingredient in corrugating adhesive solution. Borax increases viscosity, bonding between starchs and green adhesive bond. The objective of this research is to improving adhesive strength and viscosity stability by adding cross-linking agent instead of borax. Rheology and penetration of main starch gelatinization slurry were affected by borax addition level. Borax increased viscosity and decreased viscosity stability, while cross-linking additives increased viscosity stability and adhesive strength by anchoring effect.