JAPAN TAPPI JOURNAL
Online ISSN : 1881-1000
Print ISSN : 0022-815X
ISSN-L : 0022-815X
Volume 67, Issue 3
Displaying 1-17 of 17 articles from this issue
Process Control and Automation
  • Process Control and Automation Committee
    2013 Volume 67 Issue 3 Pages 226-235
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
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  • -The Challenge toward the World’s Tallest Tower-
    Hiroshi Takagi
    2013 Volume 67 Issue 3 Pages 236-240
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    TOKYO SKYTREE is the world’s tallest broadcasting tower with a height of 634m. This paper presents the unprecedented technical and engineering challenges of this project, such as : the extraordinary wall foundation that support the tower with a very small footprint, the unique vibration control system that depress the seismic shake of the tower by a half, “lift-up construction method” of the antenna spire that eliminated variety of problems associated with working at an extreme altitude, and the very rapid construction of the core column using “slip form method”, to name a few. All those were indispensable for the successful completion of the project, ensuring the safety and quality while shortening the construction period.
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  • Shuji Abe
    2013 Volume 67 Issue 3 Pages 241-244
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    In late years, the quality demand of white board from customer become very severe. Especially for food and medical supplies, there is a demand which must avoid a red spot in order to image the color of blood. Also a performance of Web Inspection System is asked to detect color spot, with increasing quality demand.
    Oita No. 2 cutter produce white board. Web Inspection system of No. 2 cutter saw the 20 rd year from installation. we replace the Web Inspection System in September, this year.
    In this paper, we would like to explain the details of deliberation and operating situation.
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  • Fumihiko Saito
    2013 Volume 67 Issue 3 Pages 245-251
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    7M⁄C at Ishinomaki mill was used to produce base stock for coated paper 380 t⁄d before the tsunami impact of last year. But nowadays, 7 M⁄C was remodeled to the copy paper machine to enter into copy paper business.
    The domestic market for copy paper is very competitive because the share of the import paper has intensively expanded, due to strong yen. Copy paper requires copy aptitude qualitatively, and to control fiber orientation is important to improve curl quality.
    This report introduces summary of the modification work carried out for the production of copy paper and a case study of the introduction of automatic control system for fiber orientation.
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  • Takahiro Tachibana
    2013 Volume 67 Issue 3 Pages 252-256
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    Fine coated printing paper is one of the main products produced a Daio Paper’s coastal mill. The N 7 M⁄C, N8M⁄C, 3 C⁄M QCS Systems were updated to the new Honeywell QCS (Experion MX) last July in order to improve the quality at the coastal mill, and the (ProCoat) cross direction actuator was introduced to the 3 C⁄M. The new QCS scanner frame has been redesigned, and a new generation of measurement performance specifications can be expected. In this report, We will introduce the features and operating experience with the new QCS system, and we are the first comparing with this unit in Japan.
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  • Makoto Kumakura
    2013 Volume 67 Issue 3 Pages 257-261
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    At Kanto factory in Hokuetsu Kishu Paper, Katsuta engineering department started commercial operation of wooden biomass generation boiler in September 2006, which utilizes wooden materials such as building wooden scraps, thinned wood and paper sludge as fuel.
    In this boiler, conveyor belt facilities are deployed for transportation of the wooden chips which are used as main fuel. But some fire occurrences in these conveyer belt facilities are reported so far in other company. In order to prevent from such serious fire disaster, we installed fiber-optic conveyer temperature monitoring system in May 2012, for the purpose of fire detection in early stage, and of preventing from fire spreading.
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  • Jun Ikeuchi
    2013 Volume 67 Issue 3 Pages 262-266
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    Recently, Web Inspection System (WIS) has been expected to enhance the quality of paper production with the highest efficiency. Since OMRON delivered WIS in the market of paper production in 1965, we have developed the latest web inspection technology, such as CCD camera, recording of inspection images, and color-inspection. Moreover, higher and higher quality for paper productions such as functional sheet will be required. In order to meet these requirements, we have developed original next-generation inspection technology named “Multi Wave Sensing”. Today, we would like to show you the backgrounds, features, and benefits of the technology, and share our perspective of advanced inspection with the technology.
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  • Masahiro Suzuki
    2013 Volume 67 Issue 3 Pages 267-271
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    A sheet surface inspection system, equipped with the monochrome line scan cameras, uses inspection object’s contrast and shape data for defect classification. Therefore it makes difficult to classify the defects by color. Another reason for the difficulty of defect classification by color is that the conventional color line scan camera (drive frequency : 40MHz) is not capable of having enough MD resolution for clear image.
    Now, FUTEC has developed a new surface color inspection system, “MaxEye. Color”, using high-speed color line scan camera technology with a drive frequency of 80MHz. Three main features of this system are : (1) a clear color image of defect, (2) an intuitive color defect classification setting, (3) a real-time color defect classification .
    This system enables operators to see sharp, clear color view of defects to determine the cause of defects in early stage of production. Furthermore, it carries out the automatic defect classification for color defects only by using real time processing function. This function contributes to the operation efficiency by supporting operators’ checking process.
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  • Atsushi Kurosaki
    2013 Volume 67 Issue 3 Pages 272-275
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    Cognex has developed new inspection system “SmartView” and related products, “AWA”, a winder control system, and “SmartSystem”, an integrated system of SmartView” & “SmartAdvisor” a monitoring system for recent 10 years. We would like to review the progress of our inspection systems and to look the prospects for the future of inspection system.
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Environment
  • Kiyoshi Ogawa
    2013 Volume 67 Issue 3 Pages 276-284
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    The environmental law regulates the upper limits of the concentrations of harmful substances in the discharge water. Every facilities will be imposed the penalties based on the law if depart from these standards, and also causes adverse impact to corporate image. To avoid these risks, continuous monitoring of the drainage is desired. The analysis of high accuracy is often time consuming. In order to take quick measures to the leakage of hazardous components, rapid detection of leakage is required. To prevent the leakage of hazardous components, rapid detection should take precedence over accuracy.
    Simple and rapid water quality analyzers are used in many facilities. Some of them judge only ON-OFF of hazardous components in the sample. But many of them are able to obtain good correlation to legal method. Some examples of simple and rapid water quality monitoring instruments are shown below.
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Topics & Information
  • -Success Story : NIPPON Paper and Other Industries-
    Hitoshi Tsuruta, Kuniharu Imato
    2013 Volume 67 Issue 3 Pages 285-290
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    This paper mentions about typical WirelessHART applications and how WirelessHART application users are starting and growing their networks.
    Then we’ll go into some of the technical details of the technology-focusing primarily on what makes Emerson’s Smart Wireless different from WirelessHART solution from other vendor.
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  • Takayuki Ikeda
    2013 Volume 67 Issue 3 Pages 291-294
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    JFE Electrical & Control Systems Co., Ltd. has developed an appearance inspection monitoring device with optical image sensors of the flat sheet for the finishing line of a paper mill. The inspection monitoring device detects defects on the surface of paper, such as sticking paper particle, paper folded and abnormal aligned. These are considered as one of the most important quality control index for the paper mill. Advanced technology for image processing has been applied to detect the defect with high accuracy.
    Two monitors have been already installed and are in operation in the paper mill company, in addition another four monitoring devices with the same technology are being used for plain paper copier.
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  • -April 22-25, 2012 at New Orleans, USA-
    Kosuke Okamoto, Ayaka Miyachi
    2013 Volume 67 Issue 3 Pages 295-299
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    PaperCon 2012 was held in New Orleans, USA on April 22-25, 2012 hosted by TAPPI (Technical Association of Pulp and Paper Industry). Total participants were more than 1,500 people and exhibition was more than100associations. Summaries of several presentations were described.
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Technical Report (Original Paper)
  • [in Japanese], [in Japanese]
    2013 Volume 67 Issue 3 Pages 301-309
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
  • Shinichi Nagata, Hidetada Sawamoto
    2013 Volume 67 Issue 3 Pages 310-319
    Published: 2013
    Released on J-STAGE: February 22, 2014
    JOURNAL FREE ACCESS
    In recent years, the paper or film products with new functionalities have been developed increasingly. We have also been developing new products with several functionalities. In the coating process, especially water-based coating, the control of moisture content after drying is very important to improve the product quality. At the beginning, we also introduced a moisture analyzer of infrared type to measure the little moisture content in the coated product. But it was found that the infrared type was not suitable for measuring the little moisture content because it was affected by the around heat source or the base materials’ absorption and was not stable over a long period. So we started to develop the moisture sensor system by ourselves. Through trial and error, a new on-line moisture sensor system has been developed. The measurement principle is based on the dielectric loss of the water which is very large compared with those of other materials. We introduced the original microwave resonator to detect the dielectric loss of the water in the products. This sensor system is now necessary for producing the commercialized coated products in our mill.
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