JAPAN TAPPI JOURNAL
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
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Volume 58, Issue 3
Displaying 1-18 of 18 articles from this issue
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Process Control and Automation
  • The Present State of Wearable Computer and its Industrial Applications
    Masakatsu Kourogi
    2004 Volume 58 Issue 3 Pages 316-320
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.316
    JOURNAL FREE ACCESS
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    The term “Wearable computing” is now widespread in general thanks to the media presence.
    In this paper, I define the term of “Wearable computer” and discuss its crucial components, which are displays, input interfaces and sensing devices and technologies. As one of sensing technologies, overview of a personal positioning method proposed by the authors is described. Lastly, the potential applications to industry are described.
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  • Performance of Fold Inspection System
    Akihiro Terada
    2004 Volume 58 Issue 3 Pages 321-327
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.321
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    In smaller-size cutter equipment, roll paper from Paper Machine is cut into the sheet sizes ; A3, A4, B4, or B5, a packing machine puts up each size 250-1, 000 sheets into a package, and then the packages are put in a carton box.
    At Oji Paper Ebetsu Mill, since Paper Inspection in the papermaking process is important, Spot Detectors are installed in all Paper Machines. However, in the packing process any dedicated inspection system was not installed, though the importance to inspect the packing state was realized.
    In October 2001, the dedicated inspection system to auto-supervise the packing state was introduced in Ebetsu Mill. In this paper, we are reporting the experience of the Fold Inspection System performance to supervise the packing state.
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  • Renewal of DCS in Takasago Mill
    Yasuhiro Konishi
    2004 Volume 58 Issue 3 Pages 328-331
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.328
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    DCS, which are operated with CRT monitoring system, have been installed on paper machines and coating machines in Takasago Mill, and play an important role in the machines. However, these DCS are getting superannuated. We have planed maintenance and tried to prolong the life of DCS, but have troubles in the maintenance due to degradation of parts.
    In this paper, we would like to report on the renewal of DCS in Takasago Mill.
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  • Operating Experience and Potential for the Operation Assistant System
    Shuji Hakiai
    2004 Volume 58 Issue 3 Pages 332-338
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.332
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    In Oji Paperboard Co., Ltd. Oita mill we mainly produce the container board and box board. Recently we are required to increase the competitiveness of the mill. Then on last year we have planed and modified largely the process line to improve the quality of container board and the labor assignment.
    On this project we needed to consider about the process of introduction of the DCS (Distributed Control System) to achieve our target in the short period. To solve the above difficulty we adopted the Operation assistant system” EXAPILOT” from Yokogawa Electric Corp. and achieved the good result.
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  • Experience of Using Mobile DCS
    Hiroki Kato, Yasuyuki Nagai
    2004 Volume 58 Issue 3 Pages 339-346
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.339
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    In recent years DCS has become indispensable to plant operation in the pulp & paper industry. Operators are generally in the Central Control Room to manage the plant, but the number of operators has been decreased by laborsaving thought, so the workshop area of each person activity is relatively expanding than before. Fushiki Mill adopted Mobile DCS into Water⁄Effluent Treatment Section for the first time in January 2002, and this section shifted to be managed by only one operator in April 2003.
    This paper describes the results of using Mobile DCS for about 2 years.
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  • The Actual Situation and the Examples of Mobile DCS
    -Information Technology (IT) Innovation of Manufacture Field-
    Kazunari Suzuki, Jin Inoue
    2004 Volume 58 Issue 3 Pages 347-352
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.347
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    As twenty years or more have passed since DCS birth, a lot of products are developed, introduced and applied for the purpose of automatic operation and safe operation of industrial plant one after another. As the result, the fewer operator in the CCR has been required. Furthermore, a role of operator has been demanded to cover a field work or engineer work.
    If its attention is paid to field work in the manufacture field, we still depend on manual work or human skill. Therefore, for the sake of pulling out the capability of human (that is field operator) , new tool is required just now. Based on such present condition, we developed and released” e-Genba (Filed support software package) ” as a tool that makes field work easier and more efficient.
    We hereby introduce” e-Genba” as below.
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  • Application of Mobile Computing Technologies to Plant Operation
    Hirokazu Kamei
    2004 Volume 58 Issue 3 Pages 353-356
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.353
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    YAMATAKE Corporation has developed the “PlantWalker-HV” that is the mobile DCS terminal system by using mobile computing technologies. PlantWalker-HV is a product based on “Operation Anywhere” that is YAMATAKE’s next generation plant operation concept.
    PlantWalker-HV supports field operators in the several scenes as follows ; Control loop check, CV bypass, Compressor starting up, Field patrol, and so on.
    PlantWalker-HV runs with several DCSs (independent from DCS vender and DCS model) , because it is in accordance with OPC DA (Data Access) and OPC A&E (Alarm and Event) . PlantWalker-HV has already run with CENTUM-XL via Exaopc.
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  • Mobile DCS-Present Condition and Use Case
    Hiroshi Oota
    2004 Volume 58 Issue 3 Pages 357-364
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.357
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    The rapid progress of the information technology is changing the form of DCS for 1990 years in the latter half. It learned to share information by equipping the interface which the plant data of DCS were used for easily in the factory each section. It is introduced about the operating form by the connection of information and the use example of the terminal of mobile in the solution of operating. It explains further about mobile DCS.
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Topics & Information
  • Advanced Supervisory Control of Re-Reeler
     
    Markku Jaaskelainen, Ph. D.
    2004 Volume 58 Issue 3 Pages 365-369
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.365
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    The quality and process improvements associated with the SmartView (Paper web inspection system and Advanced Winder Advisor package are highlighted. These results are obtained through the advanced defect detection and identification capabilities of SmartView Paper web Inspection system. Through SmartView’s ability to reliably detect all type of paper defects and differentiate different types of defects the line operators are able to confidently stop the re-reeler only on defects that need to be processed. The usage of SmartView (Advanced Winder Advisor further streamlines the re-reeling process. Extremely accurate stopping at desired defects and at the end of the reel plus immediate automatic resynchronization after splices provides results not seen before.
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  • The Web Inspection System and its Possibilities
    -Sensing technology and Directivity of NASP System-
    Masahiro Nakata
    2004 Volume 58 Issue 3 Pages 370-375
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.370
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    NASP-multi-500 platform which carried out the products release in the 2002 year evolved software. And carried out the products release as NASP-multi 530.
    And the development of new personal computer system software called NASP-FX realized the downsizing platform. The addition of a detection performance and defective classification was realized by multi 530. In order to pursue the diversity of digital image-processing algorithm, the defective classification addition was carried out. Furthermore, in products called FX, it downsized by high defective information processing part, recording of a real-time operation demand, and a data-processing part. Advanced software technology and an advanced highly efficient personal computer realize. Although various products have been released, a base calls at multi-500 platform. They are the continuation product which can be upgraded.
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  • Aiming for Open network between Each Process in Factory
    -Application of PROFInet, Control Bus-
    Kenji Ohshima
    2004 Volume 58 Issue 3 Pages 376-379
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.376
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    It’s a challenge to provide various information concerning production smoothly and quickly while pursuing factory automation and high productivity.
    Ethernet (TCP⁄IP) has been used for the communication among administrative computers earlier. Field bus has penetrated rapidly in shop floors as low-end factory network these 10 years. It appears a certain measure of its standardization is accomplished though there are some kinds of Fieldbus.
    Fieldbus, however, can’t cover everything and so it’ s necessary to consider superior layer as well in order to accomplish factory network.
    Focusing on control bus, superior to Fieldbus, we would like to explain of PROFInet that enables the connection among different kinds of controllers and introduce an applied example of paper making system.
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  • kajaani KSF-Automated Standard Freeness Tester
     
    Naoto Takigawa, Esa Piirainen
    2004 Volume 58 Issue 3 Pages 380-386
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.380
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    For the paper maker, freeness gives an estimate of what kind of fibers the pulp contains and what kind of paper can be made from it. Paper strength and different structural properties correlate to freeness testing values. Moreover, a change in target freeness value can be used to fix certain quality defects in the finished product.
    kajaaniKSF is the first on-line true freeness testing instrument on the market, as well previous instruments measure something else than standard freeness.
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  • Modern Technology for In-Line pH Measurement in P&P Industry
    -How to Get Reliable pH Value on the In-line Measurement-
    Yasuo Watanabe
    2004 Volume 58 Issue 3 Pages 387-393
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.387
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    Generally the in-line pH measurement in the Pulp and Paper Industry is one of the most difficult applications due to harsh condition in process. According to the report by P & P association, about 30% of all existing pH loops does not work well. We would like to show you the modern technology on the In-Line pH measurement and some kinds of solution against these troubles in the various processes.
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Research Report (Original Paper)
  • The Role of Alkali-Hydrogen Peroxide during Pulp Treatment
    Iori Tomoda, Yuji Matsumoto, Gyosuke Meshitsuka
    2004 Volume 58 Issue 3 Pages 395-401
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.395
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    Semi-quantitative method was developed for the determination of α-carbonyl structure in solid lignin. Deuteride reduction followed by nitrobenzene oxidation was applied to oxygen bleached softwood kraft pulp (NOKP) in order to evaluate the reactivity of hydrogen peroxide with α-carbonyl structures in lignin. We already showed that hydrogen peroxide attacked α-carbonyl structures in lignin very clearly during milled wood lignin treatment. However, when NOKP and hydrogen peroxide treated NOKP were analyzed by this method, the role of hydrogen peroxide was not clearly observed in terms of the content α-carbonyl structure. By the analysis of alkali treated NOKP without hydrogen peroxide, it was suggested that, at the hydrogen peroxide treatment, the effect of hydrogen peroxide on the α-carbonyl structure might be hidden by the generation of α-carbonyl structure and that actually hydrogen peroxide effectively degrades those newly produced structures. Hydrogen peroxide was found to play such a “hidden role” not only for newly produced α-carbonyl structures but also for the newly produced permanganate consuming substances during the treatment.
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  • Stress Analysis for Gripe Hole of Corrugated Fiberboard Case
    -Relation between Hole Height Position and Stress Components-
    Satoru Matsushima, Shigeo Matsushima
    2004 Volume 58 Issue 3 Pages 402-408
    Published: 2004
    Released on J-STAGE: December 03, 2008
    DOIhttps://doi.org/10.2524/jtappij.58.402
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    An elastic analysis for a hole side plate (breadth 265mm and height 220mm) of the corrugated fiberboard case with the grip hole (breadth 50mm, height 2r=25mm and distance h0=25∼75mm between the hole center and upper edge of the plate) under uniform stress in the upper hole center was performed by finite element method, and from this analysis, relations between stress components and h0 were considered.
    Large absolute values of normal stressesσx andσy in breadth and height directions and shear stressτxy are near the upper edge and sides of the hole. Maximum of|σx|is at the middle of the upper edge in the hole of h0<41. 25mmm and at the middle in the upper plate edge of h0≥41. 25mm, and maximum of|σy|is at hole sides of h0<75mm and at the middle of the upper edge in the hole of h0≥75mm. And maximum (=|τxymin|) of|τxy|is at positions r⁄2 (r : curvature radius of the hole) in upper direction from hole side. The maximum ofσy increases with h0 increase, and other absolute values of maximum and minimum components decrease.
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Pulp and Paper Mills in Japan (33)
Coffee break
Papyrus
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