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Volume 51, Issue 12
Displaying 1-18 of 18 articles from this issue
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[in Japanese]1997 Volume 51 Issue 12 Pages 1799
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (615K) -
Toshihiko Kawanami1997 Volume 51 Issue 12 Pages 1800-1807,011
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSHTC-S Winder is the single drum winder which has center torque mechanism. It is developed by BELOIT LENOX for winding wide width coated paper and large dismeter wound roll. HTC-S winder gets the wound in tension by center torque (drive core center directly), in addition to a method of surface wind of drum support type.
It is known well that NIP (press force between winder drum and core) and TENSION (web tension) are very important factors to get proper wound in tension especially in the core circumference part. But by the nip and tension control only, the burst, looseness and wrinkle occur when a coated paper treated through Calender, that is high density and better smoothness, is wound. To solve these problems, it is necessary to add the center torque in wind for get proper wound in tension.
BELOIT LENOX developed the center torque motor and core chuck mechanism and they are applied to HTC-S Winder. It can control a wound in tension from the beginning of winding practically, This is a innovation of BELOIT LENOX based on a leading technology.
Recently, center torque is placed on the way of controlling wound in tension same as nip and tension. HTC-S Winder introduce this time is the high quality winder that mixed the technology of BELOIT LENOX and automation technology of MITSUBISHI HEAVY INDUSTROY. HTC-S Winder performance exceeds that of single drum winder of drum support type made by other companies.View full abstractDownload PDF (2608K) -
Multi-Station WinderKei Iwanaga1997 Volume 51 Issue 12 Pages 1808-1811,011
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSThe increasing size of rotogravure rolls, coupled with the evolution of paper grades and paper making processes, demands Jumbo Roll Winding and minimizing manual works with multistation winders. Based on the demands, minimizing manual increasing and operation productivity, Valmet developed and present a completely new multistation windercalled “WINROLL”.
There are many manual works such as “splice at unwinding stand”, “web threading”, “core handling” and “tail fastening” of the former single drum winder. These manual works are minimized in “WINROLL” winder, thanks to fully automated functions, which make one-man operation possible. The winding capacity is the same as in two drum winder by shortening the auto set change time.
The “WINROLL” winder is able to produce 10-tonne or 4-meter width rolls by adding a totally new and sophisticated sequence to any of today's rider roll movement.
In this report, we especially shows the automatic equipment of the “WINROLL” winder. This helps to establish solution for man power problem.View full abstractDownload PDF (1597K) -
Michio Takahashi1997 Volume 51 Issue 12 Pages 1812-1818,012
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSThe trend towards lighter LWC, SC papers and newsprint, wide paper web and larger finished reels, coupled with the increasing waste-paper content in printing papers, is placing new and more challenging demands on winding quality.
Jagenberg's answer is the VARI-TOP, the paper winder with a winding principle which is ahead of its time and “jumbo reel” technology for winding the following paper grades:
-high-quality coated LWC papers
-reel offset and natural gravure papers
-newsprit with a high waste-paper content (de-inked papers).
With its innovative Jagenberg technology, the VARI-TOP winds top-quality jumbo reels and is increasingly being used in the manufacture of newsprint reels with a high wastepaper content.
The best possible winding parameters ensure minimal stress on the paper and perfect winding structure.
Good runability, high rotational truth accuracy, centrally-positioned cores and straight edges are achieved for each individual reel using a process control computer.
The VARI-TOP is ideal for rewind reel diameters of up to 1, 650mm, for rewind widths of up to 3, 700mm.View full abstractDownload PDF (2817K) -
THE LAMB High-Performance Roll Wrapping SystemHeinz Schneider, Hal Arnold, Takayuki Atsuura1997 Volume 51 Issue 12 Pages 1819-1825,012
Published: December 01, 1997
Released on J-STAGE: November 29, 2010
JOURNAL FREE ACCESSModern, mass paper production must be handled efficiently and economically. Kraft wrapping has proven to be an ideal method to fulfill these requirements.
LAMB's flagship wrapping system, the HiPerWrap, reflects our philosophy of keeping the process as simple as possible. The LAMB system ties high-technology with the “simple” concept by keeping most machine movements slow, dividing some functions between more than one station, or by performing certain operations in advance.
We will describe our system with the following items.
· Flow of Operatio
· Performance
· Operator
· Maintenance
· Benchmark
· FutureView full abstractDownload PDF (3989K) -
Masao Kondo1997 Volume 51 Issue 12 Pages 1826-1832,013
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSAs the winder which finishes wind rolls are automatized, many more rolls are transferred to the next process. With this, the demand for automatization and speeding up of the wrapping-related device is increasing rapidly.
Since the product data control by the computer has advanced, the operations which are performed manually with the current wrapping device have come to be controlled automatically by the on-line devices sending the data to the wrapping-related device. Also, in the past it was usual that one winding and wrapping machine was provided for one complete paper machine, but now, the structure of one wrapping machine and more than one paper machine is increasing.
Our wrapping and winding machine is a device which automatically wraps wind rolls. It is designed with all machatronics technologies so that it can be used for any product size. It consists of the bar code reading device, printer, wrapping machine, body marking device, labeling machine, etc. So, if this machine is used, wind rolls are produced, wrapped completely as final products.
Operation data for each device can be easily input, change, and monitored through the touch panel. Due to this digitized control, even unskilled operators cna learn to operate the winding and wrapping machine in a relatively short period of time.View full abstractDownload PDF (1526K) -
Innovation of Sheet CuttingMakoto Eriguchi1997 Volume 51 Issue 12 Pages 1833-1836,013
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSWe take great pleasure in getting opportunity to speak in public in such an important seminar.
Since the Sasaki prize was awarded to us in 1995, PUSH TYPE SYNCHRO CUTTER is the object of attention, and we received many inquiries about it, which produced the good results of today.
An outline of the lecture is as follows:
(1) System and Structure of PUSH TYPE SYNCHIRO CUTTER (Contents omitted due to the limited space)
(2) Latest Accomplishment (Delivery results, technical evolution of the rotor and the cutter, etc.)
(3) Future Prospects (Further developing cutter, proposal of the new equipment, and our fture prospects of the cutter)
PUSH TYPE SYNCHRO CUTTER is the latest cutter we have ever seen, and we have various kinds of assignments accordingly, which is worth while to do it for us as the technician.
We are grateful to the people who take an interest in our cutter and go on with negotiations constructively.View full abstractDownload PDF (952K) -
Michio Takahashi1997 Volume 51 Issue 12 Pages 1837-1841,014
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSNon-Stop delivery systems are indispensable on modem high speed sheet cutters. Until now, pile changes without sheet loss were only possible with two overlapping sections and two layboys. This machine configuration requires a lot of space, because a second change gate is required for the two layboys. Furthermore, this arrangement is not easily accessible.
CONTIMAT Jagenberg's new paper pile change system makes precisely counted pile changes possible without sheet loss at full operation speed-all this with the space requirement of only one layboy. Machine length, height and width are considerably reduced in comparison with the previous arrangement with two layboys. Now only one layboy, one overlapping section and one change gate are required.
With the CONTIMAT, it is possible to transport the finished piles away automatically and connect an empty pallet magazine with automatic feeding. The entire logistics for the finished paper piles are concentrated on one spot.
The CONTIMAT wiil considerably increase by reducing down-times to a minimum and at the same time make space-thanks to its compact dimensions-for additional rationalizing investments and thus further growth.View full abstractDownload PDF (2312K) -
History of Automation and Labor-Saving for Our Sheet CutterAkio Matsumiya1997 Volume 51 Issue 12 Pages 1842-1863,014
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSIn the end of 1950s, we MINAMI-SENJU MFG. CO., LTD. shifted our production from previous paper machine to paper finishing machine and have been making an effort to improve automation and labor-saving for sheet cutter and supercalender fit for customer's mill.
Currently, it is possible to widen (up to 2, 700 nun at 250 m/min.) and increase speed (up to 350 m/min. at 2, 500 mm width) of synchronous sheet cutter by changing its drive system from mechanical drive (PIV+QUADRIC LINKAGE) to electrical drive (AC servo motor). We are providing automated machine (Automatic operation, Counter marker and size change of each device) for single operation and are improving the system to stabilize the performance of the machine. We have enough three kinds of test cutter to make test cutting of the web under different condition for the selection of the most suitable design for customer's desire. For the improvement and reliability of the cutting accuracy, we are adopting our own control system for web tension whereby diameter of each reel is measured automatically to guarantee mecha-loss and inatia even while accelerating and decelerating. We are also aiming at development of high reliability, easy to handle, safety and repair service provided machine with our own produced software for the operation system of the sheet cutter.View full abstractDownload PDF (2423K) -
Tatsuo Higaki1997 Volume 51 Issue 12 Pages 1864-1870,015
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSThis system consists of the folio size sheeter FFS built by E. C. H. Will in Germany and folio size wrapping machine GRM built by Wrapmatic in Italy, and shows one of the directions for the rationalization in the paper finishing field. E. C. H. Will folio size sheeter FFS is arranged both for the ream and skid productions.
In case of the ream prodution, the reams with 250 sheets, 500 sheets, 1, 000 sheets etc. are transported directly from the layboy of FFS to folio size wrapping machine GRM via conveyors, wrapped and discharged from the double palletizer of GRM. This means that this system makes the reams wrapped/piled from the paper rolls without any interruption or any other process. The max. speed of FFS is now 400 m/min. and max. ream production is 15/min. As for the slitter, disk type top and bottom knives driven and dual slitter are available. Also the double backstand with zero speed splicer and non-stop one is available. Wrapmatic folio size wrapping machine GRM is arranged good for direct ream infeed from FFS and also ream infeed from the skid by operator. Good and tight wrapping is proven. 2-4 mm tightness is possible.
No faulty paper is presupposed for this system however the faulty paper can be ejected by FFS provided the faulty portion is marked at the side of paper rolls. Also the faulty reams can be discharged behind the double palletizer of GRM in case operator pushes the button located at the conveyor between FFS and GRM. This system is good for fine paper and coated one. 2-3 operators can operate this system and max. 200 tons/day can be processed on this system.View full abstractDownload PDF (1796K) -
Mitsubishi Automatic Sheet Sorting Machine Introduction to Finishing RoomMasakazu Fujii1997 Volume 51 Issue 12 Pages 1871-1878,015
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSSheet sorting is less automated in many paper mills. Mitsubishi Heavy Industries has developed a high speed and high efficiency sheet sorting machine (MITSUBISHI SORTREX) with cooperation with Oji Paper and Touei Denshi.
This machine can detect not only dirty pin holes and dirts but also wrinkles and streaks. It shows, on its CRT, types of defects at real time basis, and makes a daily and a monthly report.
This paper describes the specification of the machine and benefit of installing it.View full abstractDownload PDF (3252K) -
Masayuki Sakakibara1997 Volume 51 Issue 12 Pages 1879-1886,016
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSRecently, the finishing section has become more important in both developed and developing countries. Paper industry has made rapid progress such as enforcement of recycle law, shifting to products in great variety and in small amount, sharp decrease of inferior products, as well as highly improvement of machine performance.
Now, I will introduce the most up-to-date folio sheeter and combination type roll wrapping machine selected from the finishing section.
Firstly, I would like to discuss the folio sheeter. We have already delivered eighteen (18) folio sheeters to both domestic and foreign countries since 1989. Operation speed has been getting higher and higher, especially of late years. Requested improvement is not only higher operation speed but also more precise cutting length. We have improved cutting precision so that our folio sheeter can sufficiently serve customers' stern demand which occurs due to remarkable progress of the printing technology.
Secondly, various wrapping styles have been requested with regard to roll wrapping machine in order to protect product rolls from outside humidity and outside physical force such as clamping damage or oters. Accordingly, it is necessary to keep various kinds of wrapping material. This fact results in troublesomeness to manage wrapping materials. The combination type roll wrapping machine is planned and designed in order to make the management of wrapping materials simpler and easier.
From another point of view, the recycle law regarding wrapping materials has been now enacted in European countries and South Korea. It is suitable to use our combination type roll wrapping machine in order to collect wrapping materials separately. In future in Japan, the same type of law or regulation will be surely enacted. I can say here that this sort of wrapping machine will be in a main steam at that time.
View full abstractDownload PDF (2317K) -
Takayoshi Koga1997 Volume 51 Issue 12 Pages 1887-1897,016
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSFor the intermediate roll warehouse that is installed at the first of finishing process in paper mill, full automatic roll storage warehouse using “automatic control crane and vacuum lifter” is generally being prepared in the world, recently. The vacuum lifters of 58 quantity are already being used in the world according to our data which we caught at present. As one vacuum lifter is almost always used with one crane generally, I think automatic roll storage warehouses of about 50 systems are being used in the world. In such situation, we have received new orders of 21 systems from each paper making companies of Indonesia, China, Korea and Chile. The system like this was almost used in central Europe like Germany so far, however nowadays this system is the story which it is acknowledged in the world and expanding into the world. In this paper it is shown for the merit of this system, example in use and summary of 21 systems.
Next, in this paper it is also shown regarding to make automatically loading and unloading rolls and skid papers for track. They are being loaded and unloaded by using lift track in paper mill and warehouse in Japan. Therefore there are such many problems as that the track must stop during long time and rolls have a lot of wound at the roll surface and transformation, but we properly accept the problems. However in Europe as track loading systems solved their problems are being used, I introduce the merit of this system and the example in use for the system.
They are written by most newest information in the world, then I believe you can receive some benefit from this paper for you.View full abstractDownload PDF (2885K) -
Factory automation for Finishing PartJunichi Ryuuzaki1997 Volume 51 Issue 12 Pages 1898-1904,017
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSCompared with the continuous process before Paper Machine, automation of Finishing Part has been pointed out its automation delay. Recently because of the speed up of Paper Machine and from a standpoint of saving manpower new equipment for finishing part has been installed to many factory. Factory automation for Finishing part does not remains at only for newly installed equipment but in many cases it extends to whole process which the equipment related to. In such situation it is important to consider to make the most ideal operation of whole process and information management system.
The success of it's project depends on such synthetic engineering. I would like to explain, based on the above point of view, installation of equipment for man power saving, specification outline of information management and some cases of these days.View full abstractDownload PDF (2653K) -
[in Japanese]1997 Volume 51 Issue 12 Pages 1905
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (251K) -
Kengo Magara, Isao Takano, Shuji Hosoya1997 Volume 51 Issue 12 Pages 1908-1915,017
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSRecently, one of the greatest concerns of the world wide pulp and paper industries has been organo-chloro compounds discharged from bleach plants which use chlorine based bleaching chemicals. Although there are some debates on toxicities of organo-chloro compounds, we can find a distinct tendency in developing kraft pulp bleaching technologies which are facing toward less-chlorine or non-chlorine bleaching.
Among them, ozone has been recognized as a powerful delignifying reagent. However, one of the drawbacks of ozone bleaching is considered to be its non-selective degradation of cellulose, which leads to the viscosity drops of the pulps. In this situation, it was revealed by Union Camp corporation using high consistency ozone bleaching that even if the pulp viscosities were reduced during the bleaching, the pulps maintained acceptable strength properties, but the values of the viscosities were not shown by the authors.
To confirm the relationship of viscosity drops and strength properties, ozone bleaching of kraft pulps was carried out using a medium consistency mixer. Hardwood kraft pulps (LKP) and oxygen-bleached hardwood kraft pulps (LKOP) were successfully bleached to the kappa number below 3 keeping the viscosity above 20 mPa.swith 1% ozone charge.
Softwood kraft pulp (NKP) and oxygen-bleached softwood kraft pulp (NKOP) could also be bleached to the kappa number below 4 keeping the viscosity above 13 mPa.s with excess ozone charge. It was also shown that ozone-bleached pulps kept enough strength properties compared to those of the chlorine-bleached pulps. Furthermore, even the pulps which were bleached with an excess amount of ozone maintained the acceptable strength properties although the viscosities were unacceptable level.
On the other hand, the severe viscosity reduction could be protected with addition of methanol and the viscosities were kept above 30mPa-s. However, no advantage in strength properties over the non-protected pulps was found.
From these results, we consider that the relationship between pulp viscosities and the strength properties of ozone-bleached pulps differs from that of chlorine-bleached pulps. Therefore, it seems that ozone is capable of bleaching kraft pulps without addition of any cellulose protector.View full abstractDownload PDF (1841K) -
Application of Layered Dispersion Element (LDE) for Coated PaperTadahira Hamada, Tosihiro Miyahara1997 Volume 51 Issue 12 Pages 1916-1923,018
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSAnalysis of casein distribution was studied with EPMA (Electron Probe Microanalyzer) color mapping for the coated papers using mixture of latex and casein as binder.
Casein contains nitrogen in the molecule, so its distribution could be obtained if the nitrogen in coated papers could be analyzed by EPMA.
In the usual analysis by EPMA with STE (Stearate) as X-ray dispersive crystal, it is very difficult to analyze nitrogen in such specimen as paper because the concentration of carbon is extremely higher than that of nitrogen.
In this paper, we tried to use a new layered dispersive element (LDE) instead of STE for the analysis of nitrogen in coated papers. It was found that the measurement of casein distribution in the cross section of coated papers was possible with this method.
The cause of picking on the suface of a cast coated paper during printing was elucidated by the distribution of binder (latex plus casein) measured by this method. It was revealed that the lack of binder at the interface of coated layer in the base paper caused picking.View full abstractDownload PDF (3948K) -
1997 Volume 51 Issue 12 Pages 1924-1926
Published: December 01, 1997
Released on J-STAGE: October 27, 2010
JOURNAL FREE ACCESSDownload PDF (477K)
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