Go to the main menu
Skip to content
Go to bottom
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 41, Issue 5 - Dec 2009
Volume 41, Issue 4 - Dec 2009
Volume 41, Issue 3 - Sep 2009
Volume 41, Issue 2 - Jun 2009
Volume 41, Issue 1 - Mar 2009
Selecting the target year
Effect of Talc on Gravure Printability(I) -Effect of talc on gravure printability of matt and grade coated papers-
Cheong, Hee-Seok ; Kim, Chang-Keun ; Lee, Yong-Kyu ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 1~7
Talc as a coating pigment has been developed in order to replace GCC and clay for matte grade and has received much attention due to various advantages including good gravure printability. In order to elucidate the effects of talc on gravure printability, model papers were produced with three kinds of coating talc whose particle size and brightness are different. Physical properties related to surface and structure and the gravure printability of the sample were tested. Coating color with talc showed lower viscosity than that with clay. For both matte and art grades, talc tended to give lower gloss than day. The smaller the particle size of talc, the better properties in the coating color viscosity and water retention. When the particle size of talc was small enough, the surface roughness of the coated paper produced with talc was similar to that with clay while larger talcs produced rougher surface than clay. On top of that, application of talc improved compressibility and gravure printability of coated paper.
Effect of Talc on Gravure Printability(II) -Effect of talc on binder reduction for matte grade production-
Cheong, Hee-Seok ; Kim, Chang-Keun ; Lee, Yong-Kyu ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 8~12
According to a previous study, talc as a coating pigment can improve the viscosity and the water retention of coating color, the compressibility of coating layer, and hence gravure printability. Talc is also well known for its larger particle size than other pigments, which implies that less binder may be need due to its smaller specific surface area. This study investigated the possibility of reducing binder content for matte grade paper. Coating color was prepared with the Cotalc-2000, which showed the best properties in the previous study. The binder content was varied and the effect of binder content on the physical properties of coated paper and the gravure printability was investigated. It was shown that binder content could be reduced when talc was used as a coating pigment. The reduction in binder content did not influence gloss, roughness and the print density of coated paper but showed improvement in paper porosity, compressibility and missing dot.
Environmental Features and Actions of Pulp & Paper Industry
Cho, Jun-Hyung ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 13~21
Pulp and paper industry is a typical plant industry which usually consume lots of water and energy. Recently, environmental issues have become more important due to climate changes around the world, and reinforcement in the regulatory content in transfer and management of chemical material and that in environmental regulations for waste water and air. Paper industry is a source material recycle industry which recycle or reuse waste paper, recyclable wood, planned plantation or lumber from thinning and waste wood. Hence it can be said that paper industry is the representative industry for earth environment and of 21th century.
Chemical Composition of Rice Hull and Morphological Properties of Rice Hull Fibers
Sung, Yong-Joo ; Shin, Soo-Jeong ; Oh, Min-Taek ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 22~28
The rice hull could be the one of the most abundant agricultural waste in Korea. Since the efficient utilization of agricultural waste or byproducts of food industry would be critical for the sustainable growth, this study conducted the investigation of the chemical composition and the morphological properties of rice hull and rice hull fiber. It was found that there was big difference between the outer surface and the inner surface in the chemical composition and the morphological properties. Expecially, the outer surface showed the rugged patterns in which most of silica of rice hull existed. Little or no silica was found in the inner surface and rice hull fiber. The average fiber length of rice hull fiber was 0.45mm which was shorter than that of hardwood fiber. Rice hull fiber showed a round long shape which is typical shape of non-wood fibers
Characteristics of Electroconductive Paper Manufactured with Carbon Fiber
Kim, Bong-Yong ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 29~34
Electroconductive papers were manufactured as handsheet by mixing carbon fiber in LBKP and BCTMP. The electrical conductivity of the paper was improved by increasing carbon fiber content and basis weight. The porosity was increased and tensile strength was decreased by the addition of carbon fiber. Electrical conductivity of carbon fiber and BCTMP-based sheet was much better than those of carbon fiber and LBKP-based one. This result indicated that the electrical conductivity of paper can be affected by the kinds of raw material of wood fibers used.
Characterization of Watermarked Hanji prepared with Non-Mulberry Mixed Fibers
Cho, Jung-Hye ; Kim, Kang-Jae ; Park, Seong-Bae ; Kim, Chul-Hwan ; Eom, Tae-Jin ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 35~41
The new way of utilization of Hanji need to develop for adding high value added. An watermarked Hanji was prepared with non-mulberry mixed fibers and the properties were investigated. The mechanical properties of non-mulberry fiber mixed Hanji were very similar to mulberry fiber Hanji. The non-mulberry fiber mixed Hanji was a little brighter than original Hanji. The air permeability and pore size of the hot pepper fiber mixed Hanji were decreased depending on the content of hot pepper fiber. The printing ability of watermarked Hanji made of non-mulberry mixed fibers was higher than that of original paper mulberry Hanji. The preservation properties of non-mulberry fiber mixed watermarked Hanji were almost same as those of the original Hanji.
Comparison of the Functional Properties of Hanji depending on the Different Manufacturing Process.
Cho, Jung-Hye ; Kim, Kang-Jae ; Park, Seong-Bae ; Eom, Tae-Jin ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 42~48
The various kinds of Hanji were manufactured by a few craftsmen at several provinces in Korea. It is very difficult to distinguish each others by its name so-called, Hanji, traditional Hanji, improved Hanji, mechanical Hanji and so on because the manufacturing process, raw materials and characteristics of Hanji are very different from each others. In this research, the functional properties of Hanji depending on the manufacturing process were evaluated and compared each others. The properties of Hanji was greatly changed according to grammage, lye and dochim. The higher the grammage resulted in the lower the pore size and the air permeability. Hanji made by NaOH and CaO showed relatively high brightness than that made by traditional lye(Yuokgae). Hanji treated with dochim can absorb high frequency(2,000 Hz) sound more effectively.
Properties of Natural Dyeing of Bast Fiber(Part 1) -Properties of dye and extraction condition of sappan wood, gardenia and gallnut-
Park, Myung-Ox ; Yoon, Seung-Lak ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 49~59
The bast fibers of paper mulberry were dyed by using sappan wood, gardenia, and gallnut extracted under various extraction conditions. The surface absorption rates, color, and sunlight fastness of the dyed fibers were compared to those of the dyed cotton and silk. The K/S values of silk showed the highest values, followed by gallnut, gardenia, and sappan wood. The optimum extraction conditions of the dye materials were 20 g/L (input amount of dye materials per liter),
(extraction temperature), and 30 minutes (extraction time). The values of saturation were observed to increase with the increase of the amount of dye materials, extraction time, and extration temperature. However, no effect were found on the values of hue and lightness. In all samples, the developed colors dyed by sappan wood and gardenia were the series of YR, and Y, respectively. The colors of dyed cotton and bast fibers of paper mulberry by gallnut were the series of Y and the dyed silk showed the series of YR. The values of saturation of the bast fibers of paper mulberry by sappan wood and gardenia showed the highest values of saturation, followed by cotton, and silk. In the case of gallnut, cotton showed the highest values of saturation, followed by the bast fibers of paper mulberry, and silk. The sunlight fastness were not improved in all dyeing conditions.
Comparison of the Physical Properties Korean and Japanese Lining Papers
Jeong, So-Young ; Choi, Kyoung-Hwa ; Park, Ji-Hee ; Kang, Yeong-Seok ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 60~64
Paper is easily damaged by physical and chemical deterioration under several factors. Damaged paper cultural heritage is usually restored by Lining. A traditional method of Lining is attaching the lining paper behind the original paper cultural heritage using starch and water. It supports the weakened quality of paper. In Japan, paper cultural heritage is restored with "Washi" which is made from mixture of Paper mulberry and Japanese cedar. In the west, the lining paper made from Paper mulberry, which has extraordinary excellent conservativeness, is usually used as a restoration material for paper. But Japanese Washi has dominated the demand for restoration materials as the most preferred restoration paper, and most kinds of paper made from Paper mullbery have been called as 'Japanese paper'. Result showed that the strength of the Korean lining papers was generally higher than that of the Japanese ones. As a result from measuring the rate of dimensional change after water-immersion and drying, sample B of the Korean lining papers and sample E of the Japanese lining papers showed the highest stability.
The Effect of Lye and Sodium Carbonate on the Physical Properties of Korea Lining Paper
Choi, Kyoung-Hwa ; Seo, Jin-Ho ; Kang, Yeong-Seok ; Yoon, Kyoung-Dong ; Jeong, So-Young ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 66~70
Paper cultural heritages usually experienced the chemical and the physical deterioration because of various factors including preservation environment and the property of their materials. General restoration technology for paper cultural heritages is the lining. The application of the lining paper and the lining technology has varied depending on researcher's experiences. Therefore, each lining material and technology must be evaluated to develop a standard guide for preservation and restoration of paper cultural heritages. To date, various analysis techniques using lining paper, in terms of their materials, have been applied to analyses of causes and condition of damages, but it is difficult to develop a standard restoration treatment method of paper cultural heritages because it varies by their material. The Hanf, is made frrr the mulberry, is generally used for the lining in Korea.edt is required that the cr, in terms properties and general properties of Hanf, is used for lining papers, are evaluated to develop a standard guide for their restoration.ed this study, the general properties of several lining papers(Hanf), especially dimensave bility, were evaluated as part of the standardization of lining papers. The result have varied depending on the pulping chemical and the manufacturers. the basis weight, thickness and tensale strength of lining papers is bigger the paper treated by natural ash than the paper treated by sodium carbonate.ed case of formation, folding endurance, and dimensave bility, the paper treated by sodium carbonate showed better properties than those of the paper treated by natural ash.
Utilization of Electron Beam-Radiated Cotton Waste for Agaric Mushroom Cultivation Bed
Shon, Hyo-Jung ; Chung, Sun-Young ; Lee, Jong-Shin ; Seo, Yung-Bum ;
Journal of Korea Technical Association of The Pulp and Paper Industry, volume 41, issue 3, 2009, Pages 71~75
Cotton waste is usually used for cultivating agaric mushroom after outdoor fermentation for a few months. Electron beam was used to break down the polymer chaims of cotton waste for increasing low molecular weight soluble sugars, which may enhance the agaric mushroom cultivation. By increasing electron beam radiation, alpha cellulose content of the cotton waste was decreased while beta cellulose content and hot water solubles were increased. Electron beam radiation over 240 kGy on cotton waste caused significant increase of mushroom yield without lowering mushroom quality.