2003 Feb JAPAN TAPPI JOURNAL

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JAPAN TAPPI JOURNALVol. 57, No. 2

February 2003 Abstracts


Sheet Cutter with Speedpiler
Michio Takahashi
Jagenberg Co., Ltd., Voith Paper Group

 In order to increase productivity of sheeter with simple operation, Jagenberg developed continuous pile change system "Contimat", which is former version of "Speedpiler", together with European paper mill.
 Further, Jagenberg improved "Contimat" and start to supply new version "Speedpiler". The principle of "Speedpiler" is same as "Contimat" but there are many improvements on "Speedpiler" system. The principle is that pile change is done without sheet loss and without speed down with keeping same function of two-layboy system.
 Due to development of "Contimat" and "Speedpiler", we could eliminate 2nd layboy, which means total length of sheeter can be reduced remarkably and we can save the required space. Besides, by eliminating 2nd layboy, total operation of sheeter becomes simple and easy because no operation is required for 2nd layboy.
 Further, new version "Speedpiler" is modular design, so the erection period is reduced, which means quick starting-up can be expected. For continuous pile change, one gripper system is adopted, therefore simple and quick pile change can be possible without markings.
 As to unwind stand, "Speedwind" is designed. One of the important advantages of "Speedwind" is minimized downtime. There is "free space" at unwind. It is possible to feed new rolls either M/C side or paper flow direction.
 Due to development of new version of "Speedpiler" and "Speedwind", it is expected that the productivity is improved remarkably.


Maruishi-Bielomatik Folio Sheeter.The Newest Technology
Shuichi Matsunaga
Engineering Dept., Maruishi Co., Ltd.

 In the rapidly changing international market today, Maruishi-Bielomatik Folio Sheeter has distinguished itself by tailoring its innovations to meet the customer’s specific needs.
 Maruishi-Bielomatik Folio Sheeter has transformed the latest technology into new machine systems, such as non-reject system which has zero reject paper during stack change; analog less drive control with high-speed bus communication; unit control by IPC (Industrial Personal Computer). Especially, the control systems are infused with newest technology. Moreover, the special DD-type (direct drive) cutter has remarkably improved the speed curve, and Maruishi pallet robot system can securely carry damage-free paper products anywhere after piling.
 With new technology and concept, Maruishi-Bielomatik Folio Sheeter can bolster super quality and high-efficiency production.
 Next in this article, I’d like to introduce in details the new technology and high-tech features of Maruishi-Bielomatik Folio Sheeter and also its market prospective in the future.


Automation of the Sorting Work of Planographic Sheets(Planography Automatic Sorting Machine with Suction Belt Feeding)
Akira 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.
 The simple construction of this sorting machine has made it possible for female workers to operate the machine without requiring any special skills.
 It has been a while since printing was regarded as the barometer of culture, but with the increase in the new ways of using paper due to the advent of PCs, there have been further calls for improvement of quality and uniformity.
 The inspection process is also making the transition from visual check to that by the automatic sorting machine, but as the check itself does directly result in production, it may not be possible to invest a lot of money into inspection, judging from the current state of the economy.
 In order for this device to be used more widely in the industry, it is crucial to evolve the device to one that is more cost effective and sophisticated by trying to reduce its costs by continuing to come up with new ideas.
 Our Company hopes to continue to contribute to the industry by accumulating efforts in technological development by incorporating new ideas as well as utilizing the expertise of machines that we have developed until today.


Operating Experience of Sheeter with Speedpiler
Seiichi Tsuno
Hokuetsu Kamiseisen Co., Ltd.

 We reported our operating experience of sheeter with Speedpiler at 2001 JAPAN TAPPI Annnal Meeting and on 2002 january JAPAN TAPPI JOURNAL. So we have 3 sheeters with Speedpiler. Speedpiler makes precisely counted pile changes possible without sheet loss at full operation speed. Because of single layboy, sheeter length is shorter in comparision with the previous arrangement with two layboy. And we started up additional one new sheeter with speedpiler in july 2002. This sheeter that named "THE NEW GENERATION" has a lot of equipments using new technologies.
 We report our operating experience of this new generation sheeter with speedpiler.


The Introduction of Automatic Roll Preparation Device for Coater Unwinds
Masato Takahashi
Iwakuni Mill, Nippon Paper Industries Co., Ltd.

 Must do the continuous patch of new roll and old roll with unwinds of coater. Therefore, the work of putting a tab tape and an adhesive double-coated tape on new roll is necessary. It has already been automated with the printing machine. But, it was one of the operator works, and it wasn't automated in the paper industrial world. Automatic roll preparation device was introduced in 4C/R to automate this work and to save labor.
 It is report about the outline of automatic roll preparation device, the preparation conditions and the effect on introduction by this report.


Operating Experience of Sirius reel, Fuji N-2 Paper Machine
Noriyuki Mano
Fuji Mill, Oji Paper Co., Ltd.

 N-2 machine of Fuji Mill started up in October 2001.The new plant produces white lined board in a basis weight range of 160-450 g/m2. The wire width is 4.7 m and maximum design speed is 800 m/min. This machine is the fastest multi-fourdrinier machine for white lined board in the world.
 We adopted Sirius reel, permitting roll diameters up to 4,000 mm.
 The design of this machine was to set new milestones, including outstanding winding characteristics. As a result of this development work, the latest Sirius generation covers all requirements. In this paper, our operating experience of Sirius reel is reported.


Measuring Equipment with No Contact of Unevenness of Roll Paper's end Face−The Dishing Measuring Equipment−
Shigeki Nakamura
Nippon Paper Unitec Co., Ltd.

 This equipment is 'dishing' measurement equipment which roll paper of newsprint paper, telephone directory paper, and other use paper, was rolling up paper from Winder, and was installed in the position on a conveyance.
 It is equipment which measures the displacement of the main axis of roll paper's end face before rolling up and by the side of the reverse side by the laser sensor, and calculates 'dishing' (unevenness) of rolling up using a sequencer.
 It is also possible to also have equipped the external judging output and the printer actual result printing function, and to transmit 'dishing' (unevenness) data to a higher rank host.


Operating Experience of Lo-SolidsTM Cooking
Yuji Miyata
Sendai Mill, Chuetsu Pulp & Paper Co., Ltd.

 The EMCC cooking was introduced to the digester at Chuetsu Pulp & Paper Co., Ltd., Sendai Mill in 1994. The brightness of brown stock pulp was increased and the bleaching chemical was saved as expected. However, since the digester was overloaded, the main extraction load became bigger and the digester operation was not in stable, especially in rainy season when the chip moisture was increased. As a result, it has caused big losses such as the reduction of the pulp production.
 In September, 2001 the digester was modified to the Lo-SolidsTM cooking. The digester- operation has become stable and the pulp quality has been improved since the Lo-SolidsTM cookig was introduced. The Sendai mill made a Down-Flow trial in Lo-SolidsTM cooking this year. It was confirmed that the digester operation became stable further by the Down-Flow operation.


The Outline of Katsuta Paperboard Machine Remodeling
Osamu mantani
Hokuetsu Paper Mills Ltd., Kanto Mill (Katsuta)

 No.1 machine (K1) at Kanto Mill (Katsuta) has been in operation since April 1975, manufacturing high quality white paperboard from the used paper collected in Kanto and its surrounding areas. Starting up K1, Hokuetsu Paper Mills Ltd. has established its place as one of the leading paperboard manufacturer, including the coated ivory board at the Niigata Mill, and the coat white-lined board at Kanto Mill (Ichikawa). Since operation, K1 has repeated remodeling in order to improve the quality of products and the operating efficiency.
 This article introduces the outline of machine remodeling and its operating experience.


New On-line Fiber Orientation Sensor System Based on Anisotropy of Dielectric Constant −Its Development and Proof Experiments−
Shinichi Nagata
Advanced Technology Research Laboratory, Oji Paper Co., Ltd.

 A new method for measuring the fiber orientation is developed. Measuring the fiber orientation is very important from the viewpoint of the quality control of paper, non-woven fabrics and other plastic sheets. The dimensional stability of paper at various temperatures, for instance, is known to be strongly influenced by the fiber orientation.
 This new method is based on the measurement of anisotropy of dielectric constant of paper that is caused by the anisotropy of electronic polarization of cellulose molecules. The microwave dielectric resonators have been employed as a measuring tool in this method, and the fiber orientation direction is determined as the one along with the direction of the maximum dielectric constant. The difference between the maximum value and the minimum value of the dielectric constants reflects the degree of orientation.
 The fundamental performance of our system was proved by the static measurement of PET films, and the dynamic measurements were done at a speed of 1,000 m/min by using our high-speed test-coating machine.


TPM Implementation for Seven Best
Kisao Taniguchi
7B propulsion Dept., Osaka mill, Kishu Paper Co., Ltd.

 Osaka mill is located in the south of Suita City Osaka Prefecture. The location is near Shin-Osaka station, Osaka Airport, Suita interchange of Meishin expressway. This is the important point of the transportation.
 Our mill have complete quality control and plenty of challenging spirits to improve the evaluation of "Kishu Paper of Specialty paper". Because of that the same premises, R & D Dept. tie up with the mill. For that reason, we achieve the mission as the development mill.
 Our mill began implementing TPM in 1998 and won the "Award for TPM Excellence-First Category"in 2001. We will report how to begin and how it goes and the progress and the result.Furthermore, how to tackle with it.


A Progress Report of Pulp and Paper Test Standards Committee of Japan TAPPI and an Update on JIS and ISO Standards
Toshiharu Enomae
Paper Science Laboratory, Bio-material Sciences, Graduate School of agriculture and Life Sciences, The University of Tokyo
Testing standards committee member of JAPAN TAPPI

 Here reported are recent activities of Pulp and Paper Test Standards Committee of Japan TAPPI. The committee is responsible for developing test standards related to pulp and paper. Committee drafts of JIS for establishment and revision are developed, Japan TAPPI test methods are established and revised, and new ISO standard proposals and their systematic reviews are discussed and voted on by the committee. JIS has been conformed to ISO standards since 1998 so that Japanese domestic standards would not become a non-tariff barrier. Recent JIS revisions feature: (1) 20 °C and 65 % r.h. as the standard atmosphere for conditioning and testing has already expired to validate only 23 °C and 50 %, (2) in all of the optical measurements, the geometrical and optical characteristics− illuminant C diffuse illumination / normal observer−with an integrating sphere must be applied. All of the test methods using the Hunter reflectometer will be abolished as of March 31st, 2003, (3) in determination of folding endurance, ISO fold number has been newly defined and the conventional fold number will expire on March 31st, 2003, (4) in determination of ash, the ashing temperature 575 ℃ was replaced with 525 ℃.
 Since Japan became a P-member of ISO/TC6 (pulp and paper), we acquired a right to propose revision in systematic review and had more of a voice in Committee Draft voting. Moreover, we registered experts in some Working Groups to reflect our opinions directly in the Working Draft stage. Accordingly, the domestic WG3 ? optical properties ? was organized. At last, the next international meeting of ISO/TC6 is scheduled in November of 2003, for the first time, in Japan. Kind cooperation and participation by everyone interested would be appreciated.

Keywords : board, ISO, JIS, paper, pulp, test standard


Thermogravimetric Analysis of Pigments and Fillers for Papermaking
Toshiharu Enomae
Graduate School of Agricultural and Life Sciences, The University of Tokyo

 Thermogravimetric analysis was applied to several kinds of pigments and fillers for papermaking to examine exact temperatures from which mass reduction commences. Clay and talc began to reduce mass from about 350 ?C and 450 ?C, respectively. Clay contained in coated paper began to reduce mass from about 350 ?C. Therefore, "Other fillers and pigments (than calcium carbonate) such as clay and titanium dioxide are also unaffected by ashing at 525 ?C."stated in ISO 1762:2001, "Paper, board and pulps - Determination of residue (ash) on ignition at 525 ?C"was found to be apparently wrong. Calcium carbonate began to reduce mass from about 580 ?C, suggesting no decomposition at 525 ?C specified in JIS P 8251:2002. The result also suggests no decomposition even at the ashing temperature 575 ?C specified in the previous edition of ISO 1762. However, the standard tolerates an accuracy of ±25 ?C due to technical difficulty in temperature control of muffle furnaces. So, it is appropriate that the ashing temperature was lowered from 575 to 525 ?C in the revision. There was no mass reduction for titanium dioxide up to 1000 ?C.

Keywords: ash, clay, calcium carbonate, talc, thermogravimetric analysis, titanium dioxide


The Method and Characteristics of Synthesized Zeolite Prepared from Paper Sludge Ash
Takao Ando, Masato Saito, Shigeo Muramatsu and Kimio Hiyoshi
Fuji industrial research institute of Shizuoka prefecture
Junsuke Haruna, Naoto Matsue and Teruo Henmi
Department of agriculture, Ehime Univ.
Toshio Fukuda
KAWARA MFG. CO., LTD

 Paper sludge ash (PS ash) discharged from Fuji area, Shizuoka prefecture reach about 160,000 tons/year. Therefore, the development of a technique for utilizing of PS ash is essential for recycling waste materials.
 PS ash collected in Fuji area has little of SiO2 and much Al2O3, CaO, in comparison with the general material of the artificial zeolite (e.g. coal fly ash). PS mainly consists of calcite, talc and kaolinite, which are originally present in paper. These minerals are converted to gehlenite, meta-kaolinite, meta-talc and lime by incineration. For this reason, the PS ash has excess Ca and low Si containt.
 We synthesized an artifical zeolite from the PS ash by the "Si-added method" to exclude the effect of excess calcium present in the ash. Furthermore, we studied the reaction conditions such as temperature, time and the alkali used, and found optimal synthesis conditions. Chemical and mineralogical characteristics of the synthesized zeolite were then investigated. It was found that an NaP1-type zeolite was synthesized in an autoclave by processing at 120°C for 2 hours using a 3.5M meta sodium silicate (Na2SiO3) solution.
 The characteristic of Si and Al dissolved in a diluted NaOH solution shows a characteristic property of zeolite. The PS ash, coal fly ash and Shirasu were classified to S type (Si/Al<0.5), P1 type (0.5<Si/Al<2), and P2 type (Si/Al>2), respectively, in terms of the characteristic solubility of Si and Al in diluted NaOH solutions. For zeolite synthesis, the PS ash was found to require more Si to meet the synthesis condition because the PS ash had a low Si and a high Ca content. As it was, Ca silicate (CSH) was generated and zeolite synthesis was prevented. Shirasu was chosen as a material providing complementary Si. Ca in the PS ash reacted successfully with the Si in the added Shirasu to generate zeolite.

Keywords: zeolite, paper sludge, calcite, talc, kaolinite