2013 March JAPAN TAPPI JOURNAL
 
2013 March JAPAN TAPPI JOURNAL

Vol.67, No.3 Abstracts


The Construction of TOKYO SKYTREE®
-The Challenge toward the World's Tallest Tower-

Hiroshi Takagi
Obayashi Corporation

  TOKYO SKYTREE is the worldfs tallest broadcasting tower with the height of 634 m. 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, glift-up construction methodh 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 gslip form methodh, 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.


Introduction of Color Web Inspection System that Used Three CCD Camera

Shuji Abe
Oita Mill, Oji Materia Co., Ltd.

  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 20rd 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


Introduction of Automatic Control System for Fiber Orientation

Fumihiko Saito
Ishinomaki Mill, Nippon Paper Industries Co., Ltd.

  7M/C at Ishinomaki mill was used to produce base stock for coated paper 380t/d before the tsunami impact of last year. But nowadays, 7M/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.


New Model QCS Installation Example

Takahiro Tachibana
Mishima Mill, Daio Paper Corporation

  Fine coated printing paper is one of the main products produced a Daio Paperfs coastal mill. The N7M/C,N8M/C,3C/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 3C/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.


Introduction and Deployment of Temperature Monitoring System for Wooden Chips Conveyor in Biomass Boiler Facilities

Makoto Kumakura
Kanto mill, Hokuetsu-Kishu Paper Ltd.

  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.


Evolutionally-Advanced Web Inspection System with gMulti-Wave-Sensingh Technology

Jun Ikeuchi
Inspection Systems Business Div.  Omron Corporation

  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 gMulti Wave Sensingh. 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.


Main Features and Field Cases of Color Surface Inspection System  iMaxEye.Colorj

Masahiro Suzuki
FUTEC Inc.

  A sheet surface inspection system, equipped with the monochrome line scan cameras, uses inspection objectfs 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, gMaxEye.Colorh, 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.


Next-Generation Inspection System

Atsushi Kurosaki
Surface Vision, COGNEX K.K.

  Cognex has developed new inspection system gSmartViewh and related products, gAWAh, a winder control system, and gSmartSystemh, an integrated system of SmartViewh & gSmartAdvisorh 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.


Simple Environmental Water Quality Analyzer

Kiyoshi Ogawa
Sales Planning Dept., DKK-TOA CORPORATION

  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.


Smart Wireless Solutions Brings Great Success to the Many User's
-Success Story: NIPPON Paper and Other Industries-

Hitoshi Tsuruta and Kuniharu Imato
Plantweb Center, Emerson Process Management Process Systems & Solutions Center,
Emerson Process Management

  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.


Introduction of Inspection System for Appearance Quality of Flat Sheet

Takayuki Ikeda
Engineering Center, JFE Electrical & Control Systems Co., Ltd.

  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.


A Report on TAPPI PaperCon 2012
-April 22-25, 2012 at New Orleans, USA-

Kosuke Okamoto
Iwanuma Mill, Nippon Paper Industries Co., Ltd.
Ayaka Miyachi
NPi Research Laboratory, Nippon Paper Industries Co., Ltd.

  PaperCon2012 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 than 100 associations. Summaries of several presentations were described.


Development of On-Line Moisture Sensor System

Shinichi Nagata and Hidetada Sawamoto
Technological Initiatives Research Laboratory,
Oji Holdings Corporation

  In recent years, the paper or film products with new functionalities have been developed increasingly. We also have 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.