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Volume 37, Issue 1
Displaying 1-21 of 21 articles from this issue
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Suketada Ito1983 Volume 37 Issue 1 Pages 1-2
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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[in Japanese]1983 Volume 37 Issue 1 Pages 3-6
Published: January 01, 1983
Released on J-STAGE: January 29, 2010
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Suketada Ito1983 Volume 37 Issue 1 Pages 7-16
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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Takeichiro Takamatsu, Takashi Kadoya, Yoichiro Kohara1983 Volume 37 Issue 1 Pages 20-22
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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[in Japanese]1983 Volume 37 Issue 1 Pages 23-25
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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Akiyoshi Itami1983 Volume 37 Issue 1 Pages 26-30
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSRader “V” Screen started up successfully in Ebetsu Mill, Oji Paper Co., Ltd. in June, 1981. This new type chipscreen, developed by Rader Corporation in U.S.A. controls the chip thickness. Screened over thick chips are sliced to proper thickness.
After operating this chip screen, knots and shivers in pulp from continuous digester has been decreased to one third and we had been able to increase Kappa number to desirable level.
As result, chip thickness control has provided the benefit of rising in pulp yield, saving in chemicals and improving in pulp quality.View full abstractDownload PDF (2453K) -
Mitsuo Takahashi1983 Volume 37 Issue 1 Pages 31-34
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSTo select a de-watering equipment of fiber stock it is necessary to consider investment cost of equipment, power consumption, space requirement, consistency of filtrate and maintenance cost etc. In general Valveless Filters and Suction Filters are applied as thickener after screening or cleaning stage in these days. Or sometimes they are used as combination system with extractors for pre-thickening. In such cases specially for de-watering of low freeness or low consistency stock the required size of equipment and space are fairly large.
Disk Thickener has been developed to offer one solution to above. The first unit of Disk Thickener had delivered in 1978 and today 33 units are under operation in major pulp and paper mills in Japan.View full abstractDownload PDF (396K) -
Iwao Kawanishi1983 Volume 37 Issue 1 Pages 35-39
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSSince the oil shock in autumn, 1973, energysaving has become one of the biggest projects in the pulp and paper industry in Japan.
Many energy saving plans are now in the process being introduced into our company also. The ESPAD preevaporator system which was installed at Nomachi mill, Takaoka-City, as one of the energy saving project, was started up successfully in February, 1982.
This report is the summary of the operation. This system consists of 2 stages of plate-type evaporator manufactured by SHI, and is located between the flush cyclone and the relief gas condenser.
The steam from the flush cyclone where the extracted black liquor from Kamyr continuous digester is flushed, is led to the preevaporator and the extracted liquor is concentrated as dense as 2 percent, in the solid base, prior to being sent to the main evaporator. The vapor condensate from the flush cyclone is separated between highly contaminated liquor, high B. O. D liquor, and the low one ; therefore this system minimizes the treatment of contaminated liquor at the stripping stage.View full abstractDownload PDF (427K) -
Yoshinari Kobayashi1983 Volume 37 Issue 1 Pages 40-48
Published: January 01, 1983
Released on J-STAGE: January 29, 2010
JOURNAL FREE ACCESSA recent progress of biochemical pulping of bast fibers, i. e., pectocellulosic materials, including the back grounds related to pulping, e. g., retting, microorganisms producing pectinolytic enzymes etc., was critically reviewed. It covered biochemical pulping of woods, i. e., lignocellulosic materials, phenomena of microbial degradation of pectic substances in woods such as wetwoods, macerating enzymes, screening methods for useful microorganisms producing pectinolytic enzymes and characteristics of the enzymatic pulp sheets. In screening of effective microorganisms, the author's attention was directed to phytopathogenic bacteria towards mulberry and other fiber crops, especially genus Erwinia and alkalophilic bacteria.
It was also proposed that the universally prevalent term “biological pulping” should be revised to “biochemical pulping” from the viewpoint of pulping classification based on defibration energy used in pulping.View full abstractDownload PDF (1094K) -
[in Japanese]1983 Volume 37 Issue 1 Pages 49-51
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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Hiroyuki Hatouchi1983 Volume 37 Issue 1 Pages 52-55
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSBel Bond Former had been installed on existing fourdrinier of No. 1 printing paper machine at Kushiro Mill, Honshu Paper Co., Ltd. It has been running successfully after start up in August, 1981. This report describes the summary of operation for last one year.View full abstractDownload PDF (2325K) -
Yohtaro Endo1983 Volume 37 Issue 1 Pages 56-61
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSAt the Isinomaki Mill of Jujo Paper Co., No. 7 Paper Machine with Duoformer F for the production of LWC base paper has been operating very successfully for over a year. In this report performance characteristics and paper quality are described on the basis of operating experience.View full abstractDownload PDF (740K) -
Toru Tanaka1983 Volume 37 Issue 1 Pages 62-65
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe coated line at Taio Paper has been in operation for two years and a half.
This report describes the operation of finishing department.
It features a specially designed replier, a high speed sheet wrapping machine, and a computer controlled warehouse.View full abstractDownload PDF (365K) -
Fusao Tanimoto1983 Volume 37 Issue 1 Pages 66-71
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe paper inspector with static scanning type was born in some years ago.
Its principle and the history is shown in this report and as its latest stile “OMRON FAULT ANALYZER SYSTEM II” is introduced.View full abstractDownload PDF (693K) -
[in Japanese]1983 Volume 37 Issue 1 Pages 72-73
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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Hideki Nakagawa1983 Volume 37 Issue 1 Pages 74-78
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSCoagulative sedimentation and floatation are applied to the white water treatment for the purpose of the recycle of raw materials and the reduction of the suspended solids. Filtration is needed to get the water containing less suspended solids.
Multi-media filtration is very effective, because the suspended solids of white water consists of short fiber and inorganic materials.
Proper media size and depth must be decided especially in consideration of effluent quality and the interval of backwashing.View full abstractDownload PDF (458K) -
Shouji Sakae1983 Volume 37 Issue 1 Pages 79-84
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSIt is important for the reduction of water consumption and conservation of energy to apply the closed system to the white water in papermaking process.
Generally coagulative sedimentation or floatation methods are applied to the whiter water as the primary treatment.
As the secondary treatment to the white water, a multi-media filter is installed to reduce the suspended solid in the water.
Our system consisting of the floatation and multi-media filter is in successful operation in our mill at Yufutsu.
The advantages are summarized as follow.
1) After filtering, the suspended solid contentment of the white water is 02 ppm and this filtered white water can be successfully used instead of fresh water.
2) By using our system, water consumption can be reduced by about 40 % on the conventional method.
3) It is estimated that energy conservation with our system is about 350 × 103 kcal/t of paper.View full abstractDownload PDF (645K) -
[in Japanese]1983 Volume 37 Issue 1 Pages 85-107
Published: January 01, 1983
Released on J-STAGE: January 29, 2010
JOURNAL FREE ACCESSOur Industry has made efforts to reduce the use of external fossil fuel per ton of output by 26.4 percent between 1975 and 1981.
A few years ago, we set up standard figures of specific consumption of individual products, but it is of no use for us, now.
Therefore we have investigated a new data reported by 75 mills of pulp, paper and paperboard which are operated by 31 companies accounting for about 65 percent of the total production in Japanese pulp and paper industry.
According to the reported data, we have revised the standard figures which have improved by about 10 percent compared to the old ones.
And in this report, I have calculated How much Energy Saving realized by :
1. Use of waste paper
2. Reduction of Condensing Generation
3. Improvement of Reclaimed Drain
4. Water Saving
I expect your free comment on the above.View full abstractDownload PDF (1985K) -
[in Japanese]1983 Volume 37 Issue 1 Pages 108-109
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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Michio Matsumoto1983 Volume 37 Issue 1 Pages 110-117
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSDuring Morse Telegraph's and Teleprinter's palmy days, the only paper was a data media for input/output. Since that period, paper has been closely related with the information processing industry. Production of Information business paper has increased in proportion to the growth of the industry in spite of the fact that the advent of computers caused new data medium : magnetic tape and floppy or other kinds of discs, etc.
With the diversification of computer systems, a variety of printers, impact-type was main, are developed : thermal, ink jet, and photo electronic printers in order. In addition, the demand forrecording data in color has recently arisen, and it is almost inevitable. The industry hopes paper and hard-copy device makers are more closely related, work together, and make efforts to meet the requirements and to develop new recording technology.View full abstractDownload PDF (851K) -
1983 Volume 37 Issue 1 Pages 118
Published: January 01, 1983
Released on J-STAGE: November 13, 2009
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