2004 Jan JAPAN TAPPI JOURNAL

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JAPAN TAPPI JOURNALVol. 58, No. Novuary 2004 Abstracts


Fall Washing System for Removing Ink and Clay from Waste Pulp
Nobuyuki Kamo
Sakae Kohki CO., LTD.

 The "FALL WASHER" removes is ink and clay from waste paper pulp using a mesh drum.
 The washer is composed of a drum with steel bars attached to the inside sufface (pat.) The drum rotates powerfully at high speeds. This motion forces the pulp to come into contact with the mesh surface of the drum many times, while performations remain unblocked and allow the contents to dehydrate. The "FALL WASHER System" prevents pulp from forming into lumps, efficiently removes ink and clay from waste paper pulp.


On Automation of Sheet Sorting-By Vacuum Belt Conveyance-
Yuji Baba
Tokyo Feeder Co., Ltd.

 In relation to the automation of the final process handled at the finishing department of the paper mill, results are being produced as the automatic sorting of good and bad papers have been improved by the advancement of the camera and the development of the automatic sorting machine.
 Our Company has studied to see if the development of a user-friendly and cost effective Planography Automatic Sorting Machine could be possible, and focused our attention on suction belt feeding. As the result, we have succeeded in simplifying the machine and reducing the costs, and thus have become able to offer the cost effective Planography Automatic Sorting Machine to the industry.


Measures Against Global Warming in The Paper Manufacturing Industry-Activities of Oji Paper Co., Ltd.-
Tomoki Tada
Environmental Affairs Dep., Oji Paper Co., Ltd.

 The paper making industry has long contributed to society by making extensive use of biomass resources and recycled materials in its role as an exemplary recycling-oriented industry. This article presents reductions in CO2 emissions achieved through reforestation activities, forestry conservation management and fuel conversion as actively carried out from an early stage by Oji Paper Co., Ltd. Under the plans for CO2 reductions, a total annual reduction of 2.07 million tons/year in 2010 is expected, which includes a decrease of 1.15 million tons resulting from fuel conversion, 0.56 million tons from energy conservation, and 0.36 million tons from conservation management of company-owned forests within Japan. These figures correspond to an approximate reduction of 30% compared with 1990 CO2 emissions.


Development of Environmental-stress Tolerant Eucalyptus and Forest Plantations
Tetsu Kawazu
Forestry Research Institute, Oji Paper Co., Ltd.

 Environmental problems in the earth scale have become serious by a variety of industries and economic activities of human race. And it is pointed out that the activity of paper industry is one of main factors in the decrease of forest. The wood raw material securing is a big problem especially in Japan where forest resource is scarce. As a solution of this problem, paper industry positively executes afforestation in various regions around the world for stable securing of the raw material. For the further improvement of productivity and pulp properties in eucalypts, Oji Paper Co. is doing forest tree breeding research. Improvement of their growth under stress environment would be most important targets of molecular breeding to increase productivity. We introduced the transcription factor DREB1A gene that induces expression of some stress tolerance genes, and a mitochondrial citrate synthase gene that was related to acquiring phosphate under aluminum-induced inorganic phosphate limited conditions. Our recent results suggest the possibility that we can give tolerance of drought and acid soil to hybrid eucalypts (Eucalyptus grandis×urophylla) by this approach.


Development of Transgenic Eucalyptus
Keiko Watanabe, Hiroyasu Ebinuma
Nippon Paper Industries Co., LTD., Forestry Science Laboratory

 One purpose of NPI research work is developing a effective production system using a new biotechnology for improvement of biomass yield and wood character of woody plants. One of the target species of NPI is Eucalytpus, which is the most valuable for pulp and paper production.
Our strategy involves the following key components:
(1) Select germ plasm
(2) Isolate genes of interest
(3) Develop the gene transfer system
(4) Develop the mass propagation system
(5) Develop the evaluation system for traits and environmental impacts
  For the commercialization of transgenic crops and trees, it will become more important to reduce their environmental impact than to increase their economic value. The MAT vector system, which can remove marker genes without sexual crossings and stack valuable genes in sterile clones, is a promising technology for obtaining both regulatory and public approval and to accelerate the commercialization of transgenic trees.
  It is estimated 25 million hectares of agriculture land in the world suffer from excess salinization, and another two million hectares of salinated land are added each year. Salinity is a major abiotic stress limiting the productivity of crop plants around the world. Using MAT Vector System, the genetically modified trees tolerance to environmental stress presents a possible new solution for the global problem of soil deterioration with less environmental impact. Glycinebetaine is one of the compatible solutes that accumulate in the chloroplasts of certain halotolerant plants when these plants are exposed to osmotic stress. The choline oxidase (codA) from Arthrobacter globiformis converts choline into glycinebetain when this bacterium is exposed to the high salt condition. The choline oxidase (codA) is introduced into Eucalyptus camaludulensis with MAT Vector System. 5 transgenic lines were more tolerant to high salt stress than normal plants. The tolerant plants were able to produce roots in medium supplemented with 200 mM NaCl, that almost totally inhibited the rooting of normal plants.


Operating Experience of MOAS-Optimization of the Wire Part and the Press Part-
Hiroyuki Nakagawa
Yatsushiro Mill.Nippon Paper Industries Co., Ltd.

 While improvement in the speed of a machine progresses, it is becoming important to grasp the moisture action of all machine processes and the structure of paper more than the former. These can be referred to as contributing to the improvement in productivity according to sheetbreak curtailment and speedup as well as quality stability if it can observe quantitatively greatly. MOAS is a tool that computes each dryer moisture and the rate coefficient of heat transfer used as the index of paper structure from BM meter, a dryer, drive data, etc. If combining with ECOFLOW, MOAS is acquirable even parameters, such as each press moisture and a press coefficient that evaluates water drainage of a press.
  In Yatsushiro N1 and N2, very big success, such as sheetbreak curtailment and production increase by speedup, and a life rise of felt, is achieved from effective use of MOAS. In this paper, it introduces about the measure for optimization of the wire part and a press part who utilized the rate coefficient of heat transfer, a press coefficient, and press exit moisture.


Latest Technology of Foundation Fieldbus
Kazuhiko Matsumoto and Shinichi Daimon
Fushiki Mill, Nippon Paper Industries Co., Ltd.

 Fushiki Mill adopted FOUNDATION Fieldbus (Fieldbus, after this) to N-DIP plant for the first time in Japanese pulp & paper industry in April, 2001. This was largest DCS system with Fieldbus I/Os in Japan. Existing panel system and existing pneumatic field devices to latest DCS system with Fieldbus technology and latest FF devices in F-DIP plant was modernized, and existing DCS system with Fieldbus technology and existing Fieldbus devices in N-DIP plant was also upgraded to latest hardware and software version as phase U implementation this time. Two systems were integrated on the same control network bus and latest Fieldbus technology system was achieved in the world.
  This document shows how were expected items for the engineering, operation and maintenance improved through the result of installed system with latest Fieldbus technology and its products after about two years.


Concerning 3M/C Winder Automation
Toru Okumura
Futatsuka Mill, Chuetsu-Pulp Co., Ltd

 Our company,Futatsuka Mill,3 the machine is the newspaper machine of the A volumen 4 taking which was worked in 1988. In order this time to assure reduction of labor, the automated device of the volumen edge tape sticking, and core supply job was introduced. Below, it reports concerning the summary, and operation experience of consecutive automation equipment.


The Measure against a Bad Smell of the Paper Sludge Incinerator at a Regenerative Thermal Oxidizer
Hisao Umezu
Kanto Mill (Ichikawa), Hokuetsu Paper Mills Ltd.

 The sludge incinerator that works at this factory is the structure where the smell of sludge soaks into an exhaust gas in a dryness process. Introduction of deodorization equipment has been considered to correspond to environmental change of a circumference area. By introducing regenerative thermal oxidizer, the bad smell generated from a Paper sludge incinerator is remarkably improvable. The progress that results in introduction of this equipment, and an operation situation and the effect of an environmental improvement are reported.


Experiences of the PS Incinerator in Kishu Mill
Yukimasa Takagi
Kishu Mill, Kishu Paper Co., Ltd.

 Kishu Mill of Kishu Paper Co .,Ltd planned a replacement of the existing incinerator for the following reason. Overage equipmernt Apply of Waste Disposal and Public Cleaning Law (the Ministry of Environment) 3) The increase of paper sludge.
  Still more, when the replacement of the PS (paper sludge) incinerator, we planned to build a waste heatboiler what makes good use of exhaust gas from this incinerator. In this sentence, we report the experience of the PS incinerator operation since May 2002. In spite of a little trouble occurred after the start, we have relatively been in good operation.
  We would like to maintain good operation in view of, reduces reliance of fossil fuel, recycling of waste, minimizes its impacts on the environment.


Technologies and Development of Gas Permeation Control through Film
Takashi Kawamukai
Specialty Products Development Laboratory, Oji Paper Co., Ltd.

 Technologies of gas permeation control through film such as oxygen barrier and water vapor barrier are very important in the field of packaging materials or food packages. The technologies have been developed by the replacement for polymer materials that contain chlorine with the increase of environmental consciousness, and applied to flexible display panels.
  In this report the mechanisms of gas permeation through film and barrier technologies such as vapor deposition method or sol gel coating method are described. The incorporation of drying agents in a multi-layer film having an oxygen barrier layer of ethylene-vinyl alcohol copolymers results in high oxygen barrier property. Plate-like fillers also enhance barrier property of polymeric film.


Heat Storage Capsule and its Application-Application for Savingenergy and Amenity Life-
Mamoru Ishiguro
Mitsubishi Paper Mills Ltd., Corporate Research Center

 Microcapsule is a few micron-sized container which can include liquid and solid therein. In paper manufacturing, coated paper with microcapsules which include oil and leuco dyes has grown remarkably as no carbon required paper. However, microcapsules have not been produced so much for other fields, medical and food industry.
  Authors had developed new application of microcapsule including phase change material (PCM) for energy saving, comfortableness, and environment. Heat storage capsule (HS capsule) is a small particle including organic PCM. PCM releases or stores latent heat at its phase transfer temperature. Since PCM melts and solidifies in HS capsule, dispersion or solid of capsule can be treated as liquid or solid state at any temperature, respectively.
  In this presentation, characteristics and application of HS capsule will be introduced.


Trend of Electronic Paper and Oji's Original Technology
Shigeo Hayashi and Shuichi Maeda
Advanced Technology Research Laboratory, Oji Paper Co., Ltd.

 There has been increasing interest in electronic paper that has properties which are close to those of conventional paper in terms of thinness, lightweight and portability. In this paper, we will first discuss the reason why electronic paper is required from a social point of view.
  The rapid spread of the Internet and digital information lead us to focus on the displays of personal computers and mobile phones. The conventional displays such as liquid crystals and CRTs are not suitable for reading for a long time. Therefore, intensive research and development are being carried out to achieve electronic paper which has the advantages of both paper and a conventional display for use, particularly, in newspaper and books.
  Secondly, we disclose our original idea for making electronic paper, with particular emphasis on its principle, characteristics and preparations. The key technology here is to use electrical twisting microsticks made of a fiber whose surfaces are divided into two areas with different colors and electric charges in a transparent tube as the display elements.