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Volume 46, Issue 1
Displaying 1-37 of 37 articles from this issue
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Shigeo Nakajima1992 Volume 46 Issue 1 Pages 1-2
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
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[in Japanese]1992 Volume 46 Issue 1 Pages 5-9
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
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Shigeo Nakajima1992 Volume 46 Issue 1 Pages 10-18
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
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Shogo Kachi, Koichiro Shigetomi1992 Volume 46 Issue 1 Pages 21-22
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
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1992 Volume 46 Issue 1 Pages 23-31
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
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[in Japanese], [in Japanese], [in Japanese]1992 Volume 46 Issue 1 Pages 32-34
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
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Koji Ohkuma1992 Volume 46 Issue 1 Pages 35-41
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSOur new YN machine for newsprint started up from December 1989 and has been operating successfully at Yufutu Mill. This report is described on the operating experience of YN machine from start to now.View full abstractDownload PDF (4110K) -
Toru Otowa1992 Volume 46 Issue 1 Pages 42-46
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe paper machine N-1 of Yatsushiro Mill started up from November 1988 and has been operating successfully.
This report describes the operating experience of Soft Calender from its start to now.View full abstractDownload PDF (668K) -
Makio Hasuike1992 Volume 46 Issue 1 Pages 47-55
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe sheet properties are discussed in terms of the sheet forming processes ;
The two-sided nature of the formation and the surface porous system of the sheets made on fourdrinier and hybrid formers (shoe type and roll type) were varied according to the variation of the dewatering prosess. The anisotropy distribution through the thickness of the sheets made on high speed gap former was also varied with the changing of jet/wire ratio.View full abstractDownload PDF (35762K) -
Yoshiharu Kimura, Masao Hamada1992 Volume 46 Issue 1 Pages 56-63
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSNew technology in sizing and strength agents reflecting trends in the paper industry have been introduced.
The conversion from acid to neutral/alkaline papermaking has progressed rapidly. Rosin size that is used for paper sizing at a neutral pH is required and has been developed. For these circumstances, we have developed new rosin size, NeuSize 700, which achieves effective sizing at a neutral pH (pH6.37.5). The charactaristics of NeuSize 700 have been introduced.
Meanwhile there are many examples of applying strength agents of copolymerization types that gives a stable effect under strict papermaking condition. New strength agents of copolymerization type, the Harmide EX-300 series, have been obtained by the application of a new polymerization technique possessing many charactaristic different from usual strength agents. These charactaristics of EX have been summarized.View full abstractDownload PDF (1173K) -
Kazuhiro Takeshita1992 Volume 46 Issue 1 Pages 64-69
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSTypical commercially avaiable polyaminoamide-epichlorohydrin (PAE) wet strength resins contain average 11% (solids/solids) low molecular weight organic chloride contaminants, based on GC and NMR analyses. The total organic chloride (TOCL) consists of unreacted epichlorohydrin, and the byproducts dichloropropanol and chloropropanediol formed during resin synthesis. These TOCL components are distributed throughout the water, paper and atmosphere of papermaking systems in substantial quantities under commonly used PAE dosage conditions.
Optimizing the resin production process provides low TOCL PAE resin, Fibrabon 3400, which maintains the high level of wet strength performance while reducing. ca. 95% of the TOCL contaminants.
This paper is based on the presentation “Reduction of Total Organic Chloride Contaminants in Polyaminoamide-Epichlorohydrin Wet Strength Resins” presented at Papermakers Conference, April, 1991, by David I. Devore et al. of Henkel Corporation in the United States.View full abstractDownload PDF (684K) -
NEW HOFMANN PAMH. Itoh, T. Takaki, T. Matsubara, K. Iwasaki1992 Volume 46 Issue 1 Pages 70-73
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSHofmann degraded PAM has high qualities as dry-strength resins, but it loses the cationicity in the aqueous solution.
Many attempts have been done to commercialize the high qualities of Hofmann degraded PAM without the denaturation of the properties.
We have now reached the results that Hofmann reaction at the high temperture for the short time can also be suitable reaction conditions to produce Hofmann degraded PAM for the drystrength resins.
The results of search have made possible to supply Hofmann degraded PAM with the best quality by setting the reaction apparatus near the paper machine. (We call the apparatus “Hofmanizer system” and the product “New Hofmann PAM”.)
“New Hofmann PAM” is characterized by the very high ability of adsorption on the surface of pulp fibers which brings the following three major advantages;
(1) high drainnage…to increase the operation speed
(2) high effect of dry-strength…to cut down on the amount
(3) high retention…to reduce the load of waste water treatment
The consumer trials were conducted several times and good results have been obtained.View full abstractDownload PDF (531K) -
Tetsuo Ishikawa1992 Volume 46 Issue 1 Pages 74-80
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe effect of interval period between coating and drying on print mottle and binder migration was studied.
Various coating colors having several starch, latex levels, solid contents and latex design were prepared, and were coated by new type multi-purpose laboratory coater, MLC-70. MLC-70 was able to control interval period between coating and drying from 0.3 to 60 seconds.
Mottling tendency of these coated papers was evaluated by Croda ink stain and trapping test of RI print tester.
Starch and latex contents in the coated surface were measured by absorptiometric procedure and pyrolysis gas chromatography, respectively.
The effect of interval period between coating and drying on print mottle and binder migration were discussed.View full abstractDownload PDF (11777K) -
T.A. von Vadkerthy, K. Kobayashi1992 Volume 46 Issue 1 Pages 81-85
Published: January 01, 1992
Released on J-STAGE: April 23, 2010
JOURNAL FREE ACCESSReduction of basis weight, higher machine speeds of modern printing prosses, increasing use of multicolored print and modifications to printing ink formulations, require the paper producers to enhance and modify the paper quality to meet these ever increasing stringent demands. Stricter criterion is being placed on sheet formation, dimensional stability, internal strength, wet-ability, absorption and surface strength of the paper.
Chemicals designed to improve only print quality may mean an on-cost to the already expensive paper production process. We would like to highlight the effects and influence of specific process chemicals which positively contribute to enhancing paper and printing quality but in addition provide improvements in machine runnability.View full abstractDownload PDF (3804K) -
Hal Arnold1992 Volume 46 Issue 1 Pages 86-89
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe Lamb Rolaload Automatic Speed Loading System is a simple, reliable, and cost-effective way in which to load and unload material, damage-free, that allows extremely short turn-around times for trailers that are modified for automatic handling but not limited solely to that service. The system consists of three key elements. First are relatively simple modifications that are made to trailers. Second is the coupling at the loading dock that facilitates positioning of the trailer in proper alignment for loading. And, finally, the Loading/Unloading conveyor on the dock upon which the loads are pre-arranged that delivers the load into (or out of) the vehicle.View full abstractDownload PDF (5462K) -
Takayoshi Koga1992 Volume 46 Issue 1 Pages 90-96
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSIn Europe, particularly in Germany, there has been a rising tendency in recent years for paper mills to adopt automatic warehouse systems (which utilize vacuum roll lifters) as an intermediate roll storage facility at the first stage of the finishing process.
The automatic warehouse system utilizing vacuum roll lifters is composed of :
1. A vacuum roll lifter
2. A crane plus a crane controller
3. Conveyor systems for roll feeding and discharge
4. A computer system for storage control
5. A building and incidental equipment
Vacuum roll lifters, so designed as to lift rolls upright by applying suction on the roll ends with vacuum force, have such features as follows :
1. Substantial space economy is attainable because rolls are placed upright on the warehouse floor.
2. Larger diameter rolls can be handled without damage.
Because of these superior features, construction and management of an economical warehouse system can be attained with the vacuum roll lifters.View full abstractDownload PDF (3678K) -
Development of Duo-Roller IITeiichi Tanaka1992 Volume 46 Issue 1 Pages 97-101
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSIHI-VOITH Duo-roller II winder is developed for the requipment should be capable of economically producing lage rolls of paper without defects at high speed.
Duo-roller II is composed of three drums for single-roll winding, one center drum and two side drums.
IHI-VOITH Duo-roller II provides the precise roll density control up to 6 ton of roll weight and 1500 mm of roll diameter and full automatic roll change within 60 sec.
Operation can be controlled and observed in the controll center displaying all main operating parameters on colour monitor.View full abstractDownload PDF (684K) -
Analysis of digester and application of Hatton EquationJun Nishimura, Tomoki Tada, Takafumi Nakayama, Takashi Ooishi1992 Volume 46 Issue 1 Pages 102-108
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSNew Kamyr continuous digester for LBKP was started up in 1990 at Tomioka mill. At the same time, blow K-No. control system was introduced to the digester. In this method, temperature of C 6 heater is controled by Hatton Equation. Prior to this application, we checked how accurately Hatton Equation estimates K-No. and also how the compaction factor in the cooking digester should be determined.
The results are summarized as follows.
(1) The outcome of our experiment shows that Hatton Equation works well and is slightly affected by wood species and liquor/wood ratio.
(2) Hatton Equation is better used for alkaline concentration of C 6 liquor than that of C 4 or C 5 liquor.
(3) The compaction factors at C 5, C 6 and extraction stages which were measured in the laboratory are 1.07, 1.73 and 2.11 respectively.
(4) Three coefficients of Hatton Equation were calculated by non-linear least squares method. Standard deviation of blow K-No. was improved from σ= 0.77 to σ= 0.23 by means of the blow K -No. control system.
(5) It was found that H-factor in the washing zone should desirably be taken into account in estimating blow K-No..View full abstractDownload PDF (812K) -
Shin-ichi Hara1992 Volume 46 Issue 1 Pages 109-114
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSAn improved process for the preparation of polysulfide cooking liquor has been developed by Mitsubishi Paper Mills Ltd. and Chiyoda Corporation. This process has been successfully operated since July, nineteen-eighty-seven at the Shirakawa Mill and since April, nineteen-ninety at the Hachinohe Mill.
Polysulfide pulping gives more pulp yield and reduces the load on the recovery boiler with little change in pulp quality.View full abstractDownload PDF (2353K) -
Takeo Konno1992 Volume 46 Issue 1 Pages 115-120
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSYatsushiro mill of Jujo paper Co. has started operation a new kraft pulp plant (550 LUKPt/d) in march 1989. Much concern was paid to space saving, environment affairs and less man power in designing the basic equipment concept. This led to select such equipment like MCO2 bleaching, short sequence bleaching, pressurized washer, diffuser washer and short sequence bleaching. We had improved washing efficiency, so reduced the chemical consumption, stabilized pulp quality. Now it has been running stable at 600 t/d that is over its designe capasity. This report describes “O2-C/D-E/O-D” short sequence operation experience.View full abstractDownload PDF (770K) -
Shinichiro Kondo1992 Volume 46 Issue 1 Pages 121-126
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSOur first MC-oxygen delignification plant started at Tomakomai mill in 1985.
Kappa reduction was not enough and a number of trials ended in failure.
But eventually we have developed the first commercial two stage MC-oxygen delignification process which makes significant Kappa reduction (more than 50%) possible.
For environmental and economic reasons, we have successfully installed seven lines of two stage MC-oxygen delignification plants at our six mills.View full abstractDownload PDF (650K) -
Yasuo Ishizaki, Masaaki Hagiwara, Yuuji Tai1992 Volume 46 Issue 1 Pages 127-131
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSEnvironmental circumstances requires deinking technology to obtain high quality performances at present. Modern deinking technology is making remarkable progress with their each characteristic function. Under these situation, deinking agents must have character of interface science. In order to develop most appropriate deinking agents to each mills, we need to evaluate deinking agent in laboratory which will practice equivalently as typical process.We hereby construct idea of analysis methods for deinking process, especially for pulping and flotation in view points of chemical engineering.View full abstractDownload PDF (715K) -
A Proposal of New Technology to DIP-System EngineeringNaoyuki Iwashige1992 Volume 46 Issue 1 Pages 132-137
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSIn the old newspaper (ONP) high consistency DIP system, there are three key factors to determine the pulp brightness, that is;
-Bleaching effect
-Separation of the ink particles from the fiber
-Removal of the separated ink
It was proven in our DIP trial that removal of fines such as the separated ink, ash, fine fibers, etc. before high consistency treatment stage largely affects to these three factors.
The main reason for such effect is considered that materials wasting the hydrogen peroxide and alkaline agent was taken out of system, that is, the ink vehicle itself, heavy metals that will be included in the fine ink vehicles, and fine fibers.View full abstractDownload PDF (780K) -
Application Example of High Consistency Mixer PulperKazuo Aoshima1992 Volume 46 Issue 1 Pages 138-143
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSAikawa has had rich experiences for waste paper treatment plant of Board Paper. One of the important factors which determine the quality of finished stock in the waste paper treatment plant is the rejects treatment in the screening process. The basic of the waste paper processing system is to produce high quality recycled pulp as much yield as possible. It is required for accomplishing this target to simplify the rejects processing system and to eliminate circulated the foreign materials from the system. In this article, Aikawa can recommend an example of succeeded reject processing system in commercial line.
And another subject we introduce is the application example of High Consistency Mixer Pulper for deflaking any materials at over 30% consistency.View full abstractDownload PDF (4728K) -
Sodium aluminosilicate system Silton-LP seriesTosio Honma, Kazuhiro Sango, Hisashi Thutida, Kiyoshi Abe1992 Volume 46 Issue 1 Pages 144-148
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSJust recently, we have provided a market with Silton LP, an aluminosilicate system pitch -controlling agent from acid clay.
Silton LP possesses many characteristcs, such as an excellent adsorption rate/strength for various pitches, a pH independence, an effective action upon white pitch derived from waste paper, an excellent property as a filler having pitch-controlling function, a prominent affinity for water, etc.
In company with the introduction of concrete examples with waste paper, the effectiveness and characteristics of Silton LP will be described on the basis of the data in our laboratory and in the actual run as follows.View full abstractDownload PDF (1855K) -
Suppression of Vesselpick by Vesselex TreatmentHaruki Ishizaki1992 Volume 46 Issue 1 Pages 149-155
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSA new biological process for upgrading pulp is developed. Cellulase treatment on pulp before refining exhibited a remarkable effect on properties of the paper. Various cellulase were examined, the best results were obtained with VESSELEX. The vesselpick number were greatly decreased, and freeness and mechanical strength were increased without any loss of yield. To optimize the cellulase treatment, temperature, pulp consistency, contact time, and enzyme concentration were investigated. The results showed that cellulase exhibite sufficient effect at low enzyme concentration (0.02-0.03%) for only 4 hours reaction time. This enzymatic process is especially effective in case of useing the eucalyptsus cips, which have large vessels, and is simple to adapt into existing procese.View full abstractDownload PDF (3266K) -
Yasuhiko Yasuda1992 Volume 46 Issue 1 Pages 156-161
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThis paper describes an expert system for paper production scheduling which has been in operation since January 1989 at Tomakomai Mill of Oji Paper Co., Ltd. The mill has ten papermaking machines and produces 200 different types of paper products each month.
The problems associated with the production process are complex and large in scale, because of cross-machinery constraints such as limits on the supply of energy and pulp, and the combination of different products during the same production period. Production scheduling is implemented in three steps : group product allocation, individual allocation, and pulp and energy balance adjustment.
The system provides a knowledge maintenance tool by employing several CRT screens, and the expert shell used is Toshiba's “ASIREX” which runs on the AS 3000 series engineering workstations.View full abstractDownload PDF (1143K) -
D-KILN at Niigata MillTomoo Arano1992 Volume 46 Issue 1 Pages 162-167
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSA recaustizing plant was renovated at Niigata Mill of Hokuetsu Paper Mills, Ltd. as the first step to increase the pulp production.
A green liquor clarifier and a white liquor one were established in 1988, respectively. A lime kiln was also added to the plant in 1989.
The characteristics of the wet charge lime kiln are as follows ;
1) stable quality of burnt lime by a long time reburning at low temperature
2) decrease in ringing trouble by means of gentle heating
3) decrease in power and fuel consumptions
4) simplified process flow
The detailed description of the lime kiln and operational experiences are described in the article.View full abstractDownload PDF (733K) -
Koji Okumura1992 Volume 46 Issue 1 Pages 168-173
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe Circulating Fluid Bed Boiler of Honshu paper Kushiro Mill completed in April 1990 for the purpose of Energy cost down from heavy oil to bituminous coal and burning of paper sludge, chip dust which are by-product in the paper mill.
We have operated it about one year and We got sufficient satisfacation. We will make a report on the point of it and troubles which occur in this one year. On the whole, We think it successful to install this Circulating Fluid Bed Boiler, because We judge from the results of high boiler efficiency, low air pollution and burning of paper sludge and chip dust.View full abstractDownload PDF (856K) -
The History of Deculator CleanersHiroyuki Nagasawa1992 Volume 46 Issue 1 Pages 174-178
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSRecently, the PM approach system is being recognized to be equal in importance to, or as part of the paper machine. The requirements for the system are to stabilize the physical and chemical properties of stock flow, and to completely deaerate stock while keeping the system clean.
The history of deculator cleaners was the history of efforts to achieve complete deaeration and perfect wet-end stability. We have already completed the theory of perfect deaeration in 1948. And now, we have up-to-date deculator cleaner called Space-Saver. We are confident that Space-Saver deculator cleaner has almost completed in principle concerning stability, which is the main task of the deculator cleaners.View full abstractDownload PDF (818K) -
The latest winder for Jumbo RollsHirochika Kumekawa1992 Volume 46 Issue 1 Pages 179-183
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSValmet has developed a new kind of winder during the late 80's. It is called WINBELT. It is a soft-nip winder, which means that the rolls are wound on an extended-nip-type arrangement, on carrying belts. This roll supporting arrangement makes it possible to wind rolls center-drum winder quality at the capacity and efficiency of a two-drum winder. The WINBELT has been particularly designed for the difficult low-grammage printing grades and for large diameter rolls.
The basic design of the WINBELT winder appears to be traditional. The rolls are wound in a row. The sheet run is vertical. All equipment is well seen and available. The winder has been built on the solid basis of the advanced and sophisticated VALMET winders.View full abstractDownload PDF (585K) -
Elaglass ZEKazuo Yamada1992 Volume 46 Issue 1 Pages 184-187
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSWe are making researchs on plastic rolls for super calender.
The plastic roll has been run on soft nip calender and super calender for thermosenstive paper.
The plastic roll has been studied on several commercial super calender, but there are still some unsolved problems.
(1) High pressure resistance
(2) High temperature resistance
(3) Crack by paper wrapping
(4) Accumulation on the roll surface
We have developed a plastic roll, called “Elaglass ZE”, that might be a solution to these problems.
Elaglass ZE shows the following good caracteristics :
The glass transition temperature is 180°C.
High pressure resistance is more than 350 KN/m. Elaglass ZE has been already running on several commercial super calender, and excellent results could be obtained.View full abstractDownload PDF (2171K) -
Shigeharu Fuji1992 Volume 46 Issue 1 Pages 188-193
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSYokogawa develops MDSS-Manager's Decision Support System-as the basic element of CIM for Pulp & Paper.
This MDSS is to be allocated in the heart of overall CIM environment to support decision making procedure by providing necessary information to the decision maker in timely and accurately.
MDSS is to be build up over the well field-proven PA/FA platform which can also be supplied from Yokogawa, and links the platform to other computer system by using various application package.
Mainly focusing on the following three subjects as the key features, they are production scheduling, real time data management and process data analysis.
Based on this MDSS as the core, CIM environment can be either expanded and advanced.View full abstractDownload PDF (1063K) -
Fumio Shindo1992 Volume 46 Issue 1 Pages 194-197
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSMajor process industries seek solutions to build cooperate strategy support system by integrating sales, R & D and production systems.
Process control and production control systems should be merged for the solutions.
(1) Integrated plant information delivers visible plant operating conditions assisted by the operation guidance, process/equipment diagnostics and maintenance support system, “EVENT HISTORY” produces viable plant operational data.
(2) Flexible production system supportable cooperate strategy planning allows to manufacture products meeting diversifying customer need.
“TDC 3000 EXPERT” bring operators with the expertise-backed plant manipulation in every operating condition changes.
(3) Control systems should grow to support evolutional architecture, field network and singlewindow concept.
EVENT HISTORY and TDC 3000 EXPERT play a key role to unite process control and production system toward establishing CIM system.View full abstractDownload PDF (656K) -
Masao Kishida1992 Volume 46 Issue 1 Pages 198-204
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSThe key objectives of a CIM system vary according to the industrial classification, such as whether the business concerned is in the process industry or production industry. A further factor affecting the key objectives of a CIM system is the type of method by which the business is linked with the market.
This paper classifys the key objectives of a Paper & Pulp CIM and shows the positions of typical Millwide System examples in the CIM progress.View full abstractDownload PDF (941K) -
[in Japanese]1992 Volume 46 Issue 1 Pages 209
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSDownload PDF (249K) -
1992 Volume 46 Issue 1 Pages 210-215
Published: January 01, 1992
Released on J-STAGE: November 16, 2009
JOURNAL FREE ACCESSDownload PDF (1213K)
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