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Volume 50, Issue 6
Displaying 1-11 of 11 articles from this issue
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Yukio Tahara1996 Volume 50 Issue 6 Pages 859-864
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSAn important function in paper is for writing and printing, that is concerning “recording an information”. The production of the paper species as the recording media has been chaging variously for the last fifteen years. This tendency is due to the development of information technology at the business field up to the present.
The high advancement of information technology in these days brings new changing at printing industry. The epoch-making printing machine with electrophotographic or ink jet printing unit, which has neither typical printing plate, gives us printout corresponding to the variable digital data of information. It is meaning that a mass consumption of information recording paper begins.
In order to build up the future social capital, it is necesary to use multimedia technologies, which make information technology new spreading. Information recording paper conformable to various usage in an era of multimedia should be developed.View full abstractDownload PDF (1084K) -
Saburo Takeyama1996 Volume 50 Issue 6 Pages 865-873
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSShipment of packaging material has doubled in tonnage during the past quarter century in Japan with the growth of economy.
The functions of packaging related to shipment, distribution, storage, sales and convenience in end use have greatly improved with the progress of base material, machinery and other components.
Environmental aspects of packaging such as recyclability, smaller volume and biodegradability have become important keywords for products recently.
This paper will review the research and development trends of paper-based packaging materials.View full abstractDownload PDF (1802K) -
A Topic of The Latest InstrumentationChuichi Honma1996 Volume 50 Issue 6 Pages 874-881
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSDCS means distributed (from risk ets) control system.
As PCs proliferate in the mills, there has been a definite trend toward open architecture in pulp and paper making automation.
PCs must now be lower priced, higher performance and more reliable to suit millautomation needs.
This paper describes the user friendly functions of the new era DCS, named Right Sizing System, comparing with Moore Products Co. Systems which are very famous in the nouth America (smaller sized DCS has been No. 1 at 1994).
After that, I would like to show you new DCS Software, developed by IEC Members including Moore peoples.
It will be a easy and standard engineering method in the near future.View full abstractDownload PDF (2900K) -
Kiyoaki Iida1996 Volume 50 Issue 6 Pages 882-888
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSIn 1955, TAPPI listed four topics (fiber supply, minimum effluent mill, marketing education and life cycle assessment) as the most urgent ones to be investigated. Following the recommendation, TAPPI organized Life Cycle Assessment Symposium on January 24-27, 1996 at Atlanta, cosponsored by AF & PA and NCASI.
LCA is defined as the technique for assessing the environmental aspects and potential impacts associated with a product by compiling an inventory, evaluating the potential impacts and interpreting the results.
Almost 90 experts attended the symposium and applying the technique to pulp and paper products was discussed along with the presentation of several LCA studies in Europe and U.S.A.View full abstractDownload PDF (1184K) -
Shuntoh Katoh1996 Volume 50 Issue 6 Pages 889-897
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESS -
[in Japanese]1996 Volume 50 Issue 6 Pages 898
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSDownload PDF (194K) -
Totally Chlorine-Free Bleaching Process with the Introduction of Enzyme Treatment with Crude Enzymes Secreted from Phanerochaete sordida YK-624Keiichi Tsuchikawa, Ryuichiro Kondo, Kokki Sakai1996 Volume 50 Issue 6 Pages 899-905
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSTo establish a totally chlorine-free bleaching process, we applied the crude enzyme secreted from Phanerochaete sordida YK-624, to delignify and bleach oxygen-bleached hardwood kraft pulp. By the combination of crude enzyme treatment and hydrogen peroxide treatment, the pulp was brightened to 84% brightness. The physical properties of this in vitro bleached pulp increased in breaking length, and burst index. Moreover, the addition of PAM to in vitro bleached pulp resulted the great improvement on strength properties.View full abstractDownload PDF (2721K) -
Kazuko Takeda, Atsushi Mikita, Akira Yamazaki, Tetsuo Kumasaka, Kaoru ...1996 Volume 50 Issue 6 Pages 906-914
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSPrecipitated calcium carbonates of four crystal habits (viz. scalenohedral calcite, coagulated spherical calcite, rhombohedral calcite and needle-like aragonite, ) with different particle sizes ranging from 0.05 to 3.0 μm in diameter were prepared. These calcium carbonates were used as cigarette paper filler in order to study the effect of crystal habits and particle sizes of the calcium carbonate on the physical properties and pore structure of the paper. The pore structure in paper with pore diameters smaller than 6 μm was determined by a mercury intrusion porosimeter.
Paper containing rhombohedral calcite had a high density and low air permeability. Paper elongation increased as particle sizes increased regardless of the particular calcium carbonate crystal habits. Pore volume, specific surface area and average diameter of pores in the paper depended on the calcium carbonate's crystal habits and its particle sizes. Regardless of the calcium carbonate crystal habits, as the specific surface area of particles with higher particle sizes decreased, the specific surface area of pores in the paper also decreased and the average pore diameter of the paper increased. Increasing pore volume and the average diameter of pores in the paper enhanced the air permeability of the paper. Diffusion of low molecular weight gas through the paper increased with an increase in Vρ/δ, where V, ρ and δ represent the pore volume of pores smaller than 1μm diameter in the paper, apparent density and thickness of the paper, respectively.View full abstractDownload PDF (7588K) -
Yuji Matsuda, Fumihiko Onabe1996 Volume 50 Issue 6 Pages 915-922
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe micropore distribution of pulp swollen by beating, alkali-and enzyme (cellulase) -treatment was measured by means of solute exclusion technique. The micropore distribution of beaten pulp with partial destruction of fiber wall structures was remarkably different from that of alkali-treated pulp with partial dissolution of hemicellulose. While pore volume over the range of 10-270 Å in pore width of pulp increased by beating, pore volume of 10-36 Å remarkably increased by alkali-treatment. The volume of pore larger than 12 Å in pore width of alkali-swollen pulp linearly correlated with adsorption weight of dye (C.I. Direct Red 28). On the contrary, dye adsorption weight of beaten pulp remarkably increased by slight beating. Dye adsorption weight on pulp depended on pore width and volume of the pulp. On the other hand, there are large differences of dye adsorption behavior between pores produced by machnical process such as beating and those produced by chemical process such as alkali-treatment.View full abstractDownload PDF (6421K) -
1996 Volume 50 Issue 6 Pages 923-934
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSDownload PDF (22116K) -
[in Japanese]1996 Volume 50 Issue 6 Pages 935-937
Published: June 01, 1996
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSDownload PDF (416K)
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