JAPAN TAPPI JOURNALCONTENTS

1

January 2023

Vol. 77, No. 1

The Special Issue of the 65th―2022 JAPAN TAPPI Annual Meetingat Makuhari Messe, Chiba
6 Keynote Speech

The 65th―2022 JAPAN TAPPI Annual Meeting
A New Leap in the Pulp and Paper Industry―Challenge to Promote Innovation and Accelerate Transformation―……Kazumori Fukushima

10 General Review of the 65th-2022 JAPAN TAPPI Annual Meeting at Makuhari
Messe, Chiba……Planning Subcommittee, JAPAN TAPPI
20 Lecture by Winner of 50th SASAKI Prize
26 Lecture by Winner of 2021 JAPAN TAPPI Prize

Technical Report

32 ANDRITZ FibreSolve FSV（U）Pulper for Hard-to-pulping paper……Yosuke Takeshita

36 The Detrashing Technology by IntensaMaXXTM……Satoshi Orido
41 Development of Online Pulp Color Dirt Observation Equipment……Michihiro Fujiyama

47 Introduction of a Conveyor Bearing Temperature Monitoring System using an
Optical Fiber Temperature Sensor……Nobuyuki Hiroyoshi
51 Next Generation Preventive Maintenance by The Remote Condition Monitoring……Kenichi Ishihara, Tomonori Miyako and Ulrich Gensicke

Topics & Information
59 Corporate Profile & Product Information ㊾

SGS Japan Inc.

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Committee report
Coffee break
Papyrus

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Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 January JAPAN TAPPI JOURNAL
Vol.77, No.1 Abstracts

The detrashing technology by IntensaMaXXTM
Satoshi Orido
Voith IHI Paper Technology Co., Ltd.
For the detrashing system of pulping stage, more effective machine is required because thecontaminants ratio of raw material is getting increase recently. The IntensaMaXX TM is the detrashingmachine which fulfills the requirement for better detrashing operation. The rotor and screen plate arelocated at the top of the tank, and this layout prevents wearing and jamming by heavy contaminants.
The rotor axis is located as eccentric against the center axis of the vat. This layout prevents strong
centrifugal flow and also growth of long contaminants. The piping layout is also considered for the better
reject removal. At the actual operation, IntensaMaXX TM is saving much power consumption and the costof wearing parts as well. At the same time, the machine can be operated without any trouble for longtime.
ANDRITZ FibreSolve FSV(U)pulper for hard-to-pulping paper
Yosuke Takeshita
Andritz K.K. Capital Systems Sales Group
Water-proofing paper is a very effective countermeasure to reduce the amount of plastic products.
However, it is necessary to convert essentially from water-soluble paper to water-resistant paper, which
requires the application of water-resistant chemicals in the paper-making processes. The treatment ofwaste papers in the paper machine contributes significantly to the productivity of the paper machine,
and it is necessary to treat this hard-to-pulping waste papers as quickly as possible. This paper describes
a case in which the treatment of wastepaper in the process was accelerated by using our FibreSolve FSV(U) C-type pulper.

Development of online pulp color dirt observation equipment
Michihiro Fujiyama
Control System Division Nippon Paper Unitec Co., Ltd.
The method of measuring dirt in pulp is performed which are visually confirmed and measured byhumans. However, with this method, there is a large time lag when managing dirt on a production line
and continuous measurement is difficult. Therefore, OMRON has started manufacturing system thatcan monitor dirt in pulp in real time. After that, OMRON discontinued the product, and we developed
the system as a successor to the product, released the product as a monochrome version of the online
dirt meter.
On the other hand, the ratio of DIP used has increased due to the increasing recycling momentum
and environmental measures, the operation department needs to manage color dirt that are difficult to
detect with monochrome versions such as UV ink and color impurities.
Therefore, we worked on colorization of the online dirt meter in collaboration with Nippon Paper
Industries Iwanuma Mill, and started developing system that "visualizes" color dirt in pulp in realtime. This paper introduces the development of product and functions of this system.

Introduction of a Conveyor Bearing Temperature Monitoring System using an Optical Fiber Temperature
SensorNobuyuki Hiroyoshi
Yonago Mill, Oji Paper Co., Ltd.
In August 2013, the Oji Group experienced a chip conveyor fire at one of its mills. To prevent thereoccurrence of similar problems, the Oji Group decided to install fiber-optic temperature monitoring
equipment at selected chip conveyors that would affect mill-wide operations if they were to stop. Between
2019 and 2020, the Yonago Mill has equipped five conveyors that match the condition with the systemand devised the method of laying fiber-optic cables, which has prevented conveyor fires. This reportillustrates an installation of an optical fiber temperature monitoring system on the Line 1 tube conveyor
at the Yonago Mill.

Next Generation Preventive Maintenance by The Remote Condition Monitoring
Kenichi Ishihara
Valmet K.K. Automation Systems Business LineTomonori Miyako
Neles Japan Co., Ltd.(Part of Valmet) FCBL Business
Ulrich Gensicke
Development Valmet Flow Control OY FCBL VC&A
In the pulp and paper industry, decentralized digitization and control using DCS has been widely
spread and has been operated in a mixed form with manual control by operators. In recent years, withthe decline in the workforce and the difficulty of passing on technology, optimized control, in which
several control processes are automatically controlled on top of decentralized control by DCS, has also
begun to be introduced. In order to promote this digitalization and eventually expand it to DX, theimportant thing is to collect as much data as possible at the end of the process (number of sensing) andto manage the operation without stopping the collection. This paper describes the next generation of
preventive maintenance services provided by the Valmet Performance Center, one of the functions of
the Valmet Industrial Internet, and the Asset Performance Manager, which is linked to the Valmet
Performance Center, as well as the Flow C

JAPAN TAPPI JOURNALCONTENTS

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February 2023

Vol. 77, No. 2

CNF and Household Paper
1 Properties and Application Development of Phosphorylated Cellulose Nanofibers……Keiko Okuda

6 Paper with Antiviral Performance―An Application of CNF Technology―……Takehiro Yoshimatsu

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15

Efforts of the Installation CNF for Racing Car……Taisaku Nagano
Microporous Membrane with Cellulose Nano-fibers for Li-ion Battery……Yohta Mori

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Development and Application of Weather Resistant Wood-paint using Cellulose
Nanofibers……Hironari Ohki and Tomoko Shimokawa

25

CNF Dispersion Evaluation by Particle Size Distribution Measurement Using
High Resolution Disc Centrifugal Sedimentation Method……Kazumi Tanikawa

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OnGuard VBX Advance Vibration Monitoring for Improved Yankee Coating
Performance……Nick Ince, Timothy Patterson, Brendan Cysewski and Yuto Shirahata

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Latest Paper Machine Clothing Development for Tissue and Toilet Papers……Ulf Bengs, Clemens Stortelder, Tim Simpkin and Koji Kawashima

Felt Designs for a Wide Range of Products, from Toilet to Over 40 g Towels……Shingo Ohashi

A New Approach for Stable Operation of Yankee Coating on Tissue Machines―Solutions with Chemical and Digital Tools―……Gary Furman and Tomonori Tani

Application of Fiber Recovery Basket with Screen for Tissue Line……Toshio Dousaka

The Latest Technology of Double-Drum Winder and KAWANOE Pilot
Converting Line……Shinichiro KajiIntroduction of Research Laboratories（149）60

Research Report

64

Forestry and Forest Products Research Institute, Center for Advanced Materials
Preparation and Functionalization of Cellulose Nanofibers/Polymer Composite
Particles Using Various Kinds of Core Polymers……Yumi Hayashi,

Yasushi Yabuhara, Yumi Oota, Makoto Kume, Mie Shimizu and Shuji Fujisawa
Pulp and Paper Mills in Japan
（101）

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Tonegawa Division Paper Mill, Rengo Co., Ltd.

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Committee report
Essay on Intellectual Property
Coffee break

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Industry News（Domestic and International）
List of Patents issued and Laid‒open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 February JAPAN TAPPI JOURNAL
Vol.77, No.2 Abstracts

Properties and Application Development of Phosphorylated Cellulose Nanofibers
Keiko Okuda
Innovation Promotion Division, Oji Holdings Corporation
Recently, woody biomass is expected to be used in multiple ways as a carbon-neutral and renewable
resource. Among them, cellulose nanofibers (CNFs) are attracting attention as a new nanomaterial
derived from cellulose, one of the major components of trees. We have established a unique CNFs
production method by introducing phosphate groups to the hydroxyl groups of some of the cellulose
molecules in wood pulp and mechanically processing the resulting phosphorylated pulp. The obtained
phosphorylated CNFs were completely nanosized (about 3 nm in width) with high yield, and its aqueous
dispersion was highly transparent, highly viscous, and stable at pH 3–11. Analysis of the surface chemical
structure revealed the presence of cross-linked phosphate group as well as monophosphate group, which
are selectively introduced only at the C2 and C6 positions of the hydroxyl group of the cellulose molecule.
The aqueous dispersion of phosphorylated CNFs can be dehydrated and dried to form transparent CNFs
sheet with densely intertwined CNFs. This sheet has high transparency, strength, and thermal
dimensional stability, and at the same time, it has paper-like flexibility. In order to promote the practicaluse of this technology, we are currently operating a demonstration plant for the production ofphosphorylated CNFs aqueous dispersion and phosphorylated CNFs sheet. As the first stage of practicalapplication, the aqueous dispersion of phosphorylated CNFs is used as a thickening agent for cosmetics
and a leading agent for concrete pumping, and the sheet is used as a material for table tennis rackets. We
will continue to take advantage of the features of phosphorylated CNFs to develop further applications.
Paper with antiviral performance-An application of CNF technology Takehiro Yoshimatsu
Nippon paper Industries Co., LTD
A continuous decrease in the demand for printing paper is inevitable due to the trend of electronification.
On the other hand, a constant increase in the need for different types of paper, such as wrapping paper
and transport materials, is expected because switching from plastic to paper is a trend. Paper is asustainable natural resource made from wood that can fix CO2. Therefore, we believe that developing
paper-based materials with various functions will significantly contribute to the world from theperspective of SDGs and GHG reduction.
The philosophy of the Nippon Paper Group is "Contributing to better living and cultural progress
everywhere it does business." The slogan is "Constantly creating new value and contributing to better
living and cultural progress, as a comprehensive biomass company shaping the future with trees." Under
this philosophy and slogan, we have combined paper manufacturing technologies, our primary business,and "cellulose nanofiber," the ultimate ultra-fine material manufactured from wood. This approach led tothe development of antiviral paper, one of the most required properties worldwide. This paper material
exhibits high antiviral properties against influenza virus, feline calicivirus, as well as new coronavirus. It
also shows antibacterial and deodorant effects. In November 2021, we obtained the industry's first SIAA
certification of antiviral-processed products in the category of "paper, copper and other inorganic materials,
by embedding." It has now begun to be adopted for items, such as business cards and envelopes, requiring
familiar infection prevention because unspecified people may touch it. It would be great if we could prevent
contact infections in people's lives and contribute to safety.

Efforts of the installation CNF for racing car
Taisaku Nagano,
Cellulose Nanofiber Project, Daio Paper Corporation
Since 2018, we have provided CNF materials to SAMURAI SPEED, which participates in US races,
and have evaluated them by mounting them on electric vehicles. We have expanded the mounting
locations every year and promoting the mounting of new products. In 2022, CNF composite resin for door
mirrors, CNF molded plate for body, CNF products have contributed to weight reduction by mounting acontinuous molded plate. In addition, even when driving in a harsh environment, it was possible to drive
without any problem in terms of durability, similar to a normal vehicle. The CNF molded plate used in
the body of a race vehicle is a material made by compounding CNF and pulp fiber into a sheet, and hasmechanical properties far superior to those of general plastic materials. Moreover, since it is composed
only of CNF and pulp, it is an environmentally friendly material. The CNF composite resin used in thedoor mirror, ELLEX-R55, is a CNF composite resin having a cellulose concentration of 55%. Since theresin reinforcing effect can be obtained by compounding cellulose as a resin filler, a plastic reducing effectcan be expected. Utilizing the characteristics of CNF such as plant origin, high strength, high elastic
modulus, and recyclability, we will contribute to CO2 reduction by reducing plastics and weight of vehicles,
and we will expand the CNF business in the medium-term business plan after 2024.
Microporous membrane with cellulose nano-fibers for Li-ion battery
Yohta Mori
FIBLIC Business DIV, Tokushu Tokai Paper Co., Ltd.
It is widely said that the non-woven fabric has a large pore diameter and hard to be applied as aseparator for lithium ion batteries. In this study, we actually made some battery cells using non-woven
fabric and conducted a confirmation test on the occurrence of defects. A hand-made PET non-woven fabricand a cellulose non-woven fabric were used for the test as a Lithium ion battery separator. A
commercially available polyolefin microporous membrane and a developed microporous membrane withcellulose nanofiber (FIBLIC) were evaluated for comparison. As a result, in the PET non-woven fabric, adecrease in discharge / charge efficiency, which is guessed to be poor electrical insulation property, wasobserved in the initial aging process. No problem occurred in the aging process for the cellulose non-woven
fabric, but in the 0 ° C float test (Charging on Constant Voltage at 4.2V), voltage fluctuations that seemed
to be a slight short circuit due to dendrite formation were observed. The developed microporous membranewith cellulose nanofiber did not show any problems as in the polyolefin microporous membrane.
Development and Application of Weather Resistant Wood-paint using Cellulose Nanofibers
Hironari Ohki
Technical Group, GEN GEN Corporation
Tomoko Shimokawa
Department of Forest Resource Chemistry, Forestry and Forest Products Research Institute
Development of the wood paint superior in weatherability was achieved using unmodified cellulose
nanofiber (CNF）made from domestic cedar chips. We used soda-anthraquinone cooking to prepare thepulp, and enzymatic pretreatment was performed prior to mechanical treatment for nanosizing process.
The CNF water suspension prepared by the integrated process showed high dispersibility and was
suitable for water-based paints compared to other CNFs. The accelerated weathering test with the coatedwood panel using the CNF-blended water-based paint revealed that the degree of discoloration was
suppressed to less than 1/2 than in the case without CNF.

CNF dispersion evaluation by particle size distribution measurement using high resolution disc centrifugal
sedimentation method
Kazumi Tanikawa
Sanyo Trading Co., Ltd
It is important to evaluate dispersibility since CNF are generally miniaturized by mechanical treatment
under wet conditions. The particle size distribution evaluation is one of them, and it is important forcontrolling the physical properties of CNF and making effective use of it.
There are various principles and method for particle size distribution measurement, and each of themhas a particle size range, a particle concentration and a dispersion medium, which they are good at. It isnecessary to use it properly according to the sample to be measured and the purpose. CNF often has
various particles size at the same time in the defibration process. Therefore in order to measure CNF withdifferent particle size at the same time, it is necessary to select a particle size measurement method withhigh resolution. The centrifugal sedimentation method particle size distribution measurement method is
attracting attention as a method for directly observing particles without using a fitting algorithm.
We prepared a sample that was mechanically processed in six steps from 1 to 30 times, and confirmed
the difference in distribution using a disc centrifugal type particle size distribution analyzer. It was
confirmed that the CNF was defibrated and the median diameter became smaller as the number oftreatments increased. It can be expected to be used for physical property control and effective utilizationof CNF.
OnGuard VBX Advance Vibration Monitoring for Improved Yankee Coating Performance
Solenis(shanghai)
Nick Ince
Solenis(USA)
Timothy Patterson , Brendan Cysewski
To provide improved process awareness, an advanced vibration monitoring system that includes
proprietary software and analytical techniques has been developed. The utilization of this newmonitoring system will be reviewed highlighting its capability to optimize overall Yankee cylinder
operation. A case study will demonstrate the value of this new monitoring system, a system that
includes remote monitoring and control capabilities. Specifically, it will address the correlation ofvibration characteristics with Yankee coating performance and crepe blade chatter.
Latest paper machine clothing development for Tissue and Toilet Papers
Ulf Bengs
Albany International, Forming Eurasia
Clemens Stortelder and Tim Simpkin
Albany International, MC Eurasia
Tissue paper manufacturing cost and paper quality are main “key drivers” for the papermakers. With
this reality it is imperative that suppliers of paper machine clothing must provide innovative solutions inorder to reduce these paper manufacturing cost and attain high sheet quality.
Albany International has developed specific product solutions to high, medium, and low speed tissue
machines and for different kind of forming and press technologies like Crescent former and a new machine
concept NTT. This paper describes new technology of Paper Machine clothing of forming wire, press felt,
and shoe press belt.

Felt Designs for a wide range of products, from toilet to over 40g towels
Shingo Ohashi
ANDRITZ Fabrics and Rolls Limited*２Sales and Marketing
In recent years, domestic paper manufacturers have continued to focus on the production of household
paper. Among them, there has been a marked increase in the production of toilet paper and paper towels,i.e., medium- to high-basis-weight household paper products. New entrants into the household paper
market are also continuing, and new types of paper machines are increasingly being installed in Japan.
The domestic household paper market will continue to be a focus of attention in the future due to theaging of the population and the expected resurgence of inbound demand.
We have five large felt manufacturing bases around the world with global operations, and our Austrian
mill, one of the largest in the world and established over 200 years ago, has the world's top share in thehousehold paper market, especially in Europe.
The company is also aggressively expanding into the aforementioned medium- to high-basis-weight
products and new machine-type fields.
In this issue, we will introduce the features of the felt design that has become the mainstream in thisfield.

A New Approach for Stable Operation of Yankee Coating on Tissue Machines-Solutions with Chemical and Digital ToolsGary Furman
Sr. Corporate Scientist, Nalco Water, an Ecolab Company
Tomonori Tani
Katayama Nalco Inc.
Creping remains the most important unit operation in the tissue making process, particularly forconventional light dry crepe machines. As such, tissue makers should always be on the alert for new
ways to improve this process. In this paper we introduce both a new creping adhesive and a new digitaltool, vibration monitoring, to the Japan market as opportunities for process and product improvement.
The new Yankee coating adhesive is designed to provide a unique set of coating properties. The“TULIPTM” adhesive provides strong adhesion, soft film characteristics, good tolerance to moisturevariation, excellent durability, and superior rewet qualities. These properties are demonstrated by lab
studies and commercial case histories. The strong adhesion over a wide moisture range can be utilized
to improve crepe structure (increased number of crepe structures per unit length) to positively influencesoftness or maintain softness at higher creping moisture levels for energy savings.
The new digital tool is called “Yankee Operations Intelligence” or YOI and helps tissue makers protect
their Yankee dryers by alerting them to potentially damaging chatter events. Although asset protection
is a focus for YOI, vibration monitoring also provides powerful insight to mechanical, operational, andchemical impacts to the health of the Yankee coating and creping process. Vibration monitoring caneasily detect changes and provide guidance to operators to make adjustments if needed.

Application of Fiber Recovery Basket with screen for Tissue line
Toshio Dousaka
Voith IHI Paper Technology Co., Ltd.
The recent target of Stock Preparation System is to improve stock quality, to save energy and to savefiber loss. Also the importance of water saving is also getting higher as other target. This means that
effluent treatment is also need to be improved to get better recycled water to reduce the usage of flesh
water.
Typical effluent treatment has two steps as primary (with DAF: Dissolving Air Flotation) and secondary(with sedimentation). After water clarification, sludge comes out from the system. Sludge includes someshort fibers which can be reused, and usually sludge is treated by landfilling finally. If short fibers arereused it would save the cost not only of fibers but also of landfill.
To recover the short fibers usually Disc Filter is applied, but a Disc Filter need big installation area andexpensive cost of machine itself. Therefore it is not still applied for many customers yet, especially for thecustomers in small production.
To recover more short fibers at effluent treatment in relatively small flow ratio, smaller and easiermachine is necessary. In this article, I introduce the latest fiber recovery technology with screen basket.

The latest technology of Double-Drum Winder and KAWANOE Pilot Converting Line.
Shinichiro Kaji
Design Dept, KAWANOE ZOKI CO.,LTD.
Kawanoe Zoki Co., Ltd. has been involved in paper manufacturing machinery for over 70 years since
its founding in 1944 under the management philosophy of "Let's work together and prosper together"
Paper manufacturing machines have five functions: paper making, paper winding, paper folding, paper
slitting and cutting, and paper wrapping.
We design and manufacture all machines with 5 functions.
Among them, this time I would like to introduce high-speed and automation technology of the two-drum
winder for tissue-paper,board and paper,non-woven.

Preparation and Functionalization of Cellulose Nanofibers/Polymer Composite Particles Using Various Kinds ofCore Polymers.
Yumi Hayashi, Yasushi Yabuhara, Yumi Oota, Makoto Kume, and Mie Shimizu
Toppan Technical Research Institute, Toppan Inc.
Shuji Fujisawa
Graduate School of Agricultural and Life sciences, The University of Tokyo
In the present study, we investigated the development of dry powders comprising polymer particles
covered with cellulose nanofibers (CNFs). CNFs with uniform widths can prepared from wood cellulose
by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl)-mediated oxidation, which introduces carboxy groups
onto the surface of the cellulose. Divinylbenzene (DVB) monomer droplets are stabilized by CNFs in an
aqueous emulsion system, and it is possible to obtain poly-DVB (pDVB) microparticles that are densely
covered with CNFs by polymerizing the DVB in such a system. Herein, we developed an approach tofabricating CNF-shelled composite microparticles with cores comprising various types of polymers, andinvestigated the properties of their carriers.
We found that it was easier to stabilize the monomer droplets in an emulsion if the CNFs were modified
with quaternary ammonium (QA) cations. This strategy enabled us to produce CNF-shelled composite
microparticles with various types of core polymers. Moreover, the mechanical properties of thesecomposite particles were superior to those of polymer microparticles without a CNF shell.
The electronic interaction with the surface carboxy groups of the CNF shell endowed the composite
particles with the pH-sensitive ability to adsorb/desorb various cationic molecules, such as antibacterial agents, metal ions,polymers, and fluorescent or redox dyes. Interestingly, when fluorescent dyes were adsorbed onto the composite particles,
the emission wavelength was shorter than in the solid state,
which suggests that interaction with the carboxy groups dissociated on the surfaces of the particles prevented the aggregationof the fluorescent dye.
The functionalized cellulose nanofibers/polymer composite particles produced by the process have desirable mechanicaland carrier properties, and are therefore potentially very useful for industrial applications and in the security field.

JAPAN TAPPI JOURNALCONTENTS

3

March 2023

Vol. 77, No. 3

Process Control and Automation/IoT
2 General Review of 46th Pulp and Paper Process Control Symposium……Process Control and Automation Committee, JAPAN TAPPI

7 Contribution to Carbon Neutrality through Optimization Technology「Part Ⅱ」―Challenges and Solutions in Utility Plant Operation Optimization―……Soichi Iwamoto

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TMEIC Product and Technology that Can Contribute to DX in the Paper
Industry……Yoshito Katsuki

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Learning from Other Industries, Four Points for Success in Manufacturing DX
from an Instrumentation Viewpoint……Shougo Kataoka

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Importance of Data Utilization and Environmental Measures at Manufacturing
Shop Floor……Tatsuya Terasawa

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Visualize and Reduce Fiber Losses by OnView.MassBalance……Kanato Mizukoshi

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Steps into the Future as Seen in Global Digitalized Plants……Taku Shigihara

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Toward Data-driven Factory Automation as seen from Recovery Line
Optimization……Hisanori Bando49

Effect of Introducing the Boiler Combustion Control Optimization System……Kai Matsubara

Topics & Information

56

Comprehensive Solutions for Utilizing Recycled Paper by KURITA……Satoshi Wada

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Proposal to Control Color Quality and to Reduce the Loss in the Production Lineby High Precision Color Sensor……Hiroyuki Fukuhara

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DX Initiatives for In-house Power Generation Facilities……Nobutaka Maki

Research Report

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Pulping of Mitsumata by using Twin Screw Extruder……Naoichi Muto, Takashi Okuda and Takuma Teraoka

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Committee report
Papyrus

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Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 March JAPAN TAPPI JOURNAL
Vol.77, No.3 Abstracts

Contribution to Carbon Neutrality through Optimization Technology「Part Ⅱ」-Challenges and Solutions in Utility Plant Operation OptimizationSoichi Iwamoto
Advanced Solution Department, Engineering Headquarters, Advanced Automation Company, Azbil Corporation
Last year, we introduced energy conservation by optimization technology and demand response
solution to support the clean energy transition towards carbon neutrality. This year, as the second
report, we will focus on utility plant operation optimization by Azbil’s optimization solution, which has
a large effect for energy conservation and CO2 emission reduction.
Firstly, we realize utility plant operation optimization by using Multivariable Model Predictive
Control (MPC). A hybrid system consisting automatic control and guidance built by using MPC
provides flexibility that enhances receptivity among operators on-site. Additionally, our optimization
solutions also utilize soft sensors, digital twins and AI technology to solve problems often occurred inutility plant operation optimization.
In this paper, we classify the problems that have been solved through our optimization solutions inmany industries such as Pulp and Paper, Refinery, Chemical, into several topics which are “Boiler
steam pressure control”, “Building and updating model for MPC”, and “Receptivity among operators
on-site”, and report the solutions for challenges indicated in these topics.
In particular, regarding “Building and updating model for MPC”, which is directly linked to theeffectiveness of implementation of MPC on-site, we will introduce in detail for the utilization of digital
twins in building model expressing the equipment property which represent the actual behavior of theutility plant, and the newly developed automatic model updating function through AI technology to
update the model for MPC according to changes in equipment property due to reasons such as aging
and maintenance.

TMEIC product and technology that can contribute to DX in the paper industry
Yoshito Katsuki
Toshiba Mitsubishi-Electric Industrial System Corp. (TMEIC)In recent years, the prices of all kinds of things have soared resulting in squeeze profits in the paperindustry as well. In the future, optimizing the usage of all kinds of things will be inevitable with fulluse of AI and IoT technologies to promote digital transformation. Furthermore, the trend toward
carbon neutrality is growing around the world, and we are now in an era in which companies are
required to contribute to the realization of a sustainable society. This paper introduces six of our new
products and technologies that enables to support initiatives aimed at further improving productivity
in such circumstances.

Learning from Other Industries， Four Points for Success in Manufacturing DX from an Instrumentation
Viewpoint
Shougo Kataoka
Solution Business Division, Connected Industries Business Dev. Center， Methodology Development Dept.,
Yokogawa Solution Service corporation
The environment surrounding the manufacturing industry is changing dramatically in recent years.
To adapt this situation, almost all companies are required to transform under the keyword "DX".
However there is no methodology that guarantees success of the manufacturing DX. Yokogawa Solution
Service has analyzed the situation of manufacturing site, and defined the elements of manufacturing
DX through collaborations with customers in wide variety of industries, such as chemical, oil,pharmaceutical, etc.
In this paper, we describe four points for success in manufacturing DX, and provide case study fromother industries that Yokogawa Solution Service conducted workshop for site staffs to help theirtransformation.

Importance of Data Utilization and Environmental Measures at Manufacturing shop floor
Tatsuya Terasawa
Sustainable Manufacturing Engaged Div., Uvance Business Group FUJITSU LIMITEDThe world now faces the crisis of global scale of environment, society and economy. Climate change
poses a "survival crisis" for mankind and many other organisms, and global warming has progressed
during the past 10 years, causing the retreat of glaciers, the death of coral reefs, and abnormal weather
in various parts of the world. In addition, various social issues such as poverty, human rights violations,and the aging of the population continue to be major challenges. In addition, the components of the value
chain, such as the novel coronavirus pandemic, geopolitical crisis, and currency fluctuations, are exposed
to unprecedented uncertainty. In this uncertain and unstable age, this paper outlines points requiring
attention in the promotion of manufacturing DX, while it mentions the arrangement of problems in thepaper and pulp industry, challenge themes for the solution of problems, data utilization in manufacturing
shop floor, and the importance of environmental countermeasures. It should be noted that theinterpretation and consideration of the regulations in this paper are not absolute, because they are
discussed in part based on the judgment of our company based on the interpretation by the government
and industry groups.

Visualize and Reduce Fiber Losses by OnView.MassBalance
Nodoka Furubayashi
International sales department, Voith IHI Paper Technology Co., Ltd.
Voith is promoting the digitization of the papermaking process under the name of PM4.0. While
increasing the number of digital products delivered to the papermaking process worldwide, we are also
developing digital products for the raw material process as a full-line supplier. This article introduces a
product called OnView.MassBalance that visualizes fiber loss in the OCC line.
Generally, fiber loss in the raw material process is known only on a monthly or weekly basis, and it isdifficult to pinpoint the location of the process in which the loss occurs. By using OnView.MassBalance
developed by Voith, the flow rate of feed, accept, and reject of each process is clearly displayed in a chartformat called Sankey diagram, and it is possible to identify the place where fiber loss is high in realtime.
Steps into the future as seen in global digitalized plants
Taku Shigihara
Digital Industries, Siemens KK
The degree and speed of change in our business environment today is significantly faster than it wasa decade ago, making it imperative for any company to increase its competitiveness through industry
digitalization. This article explores the concept of digitalization and hints for the Japanesemanufacturing industry, with examples of digitalized factories overseas.
Toward Data-driven Factory Automation as seen from Recovery Line Optimization
Hisanori Bando
Automation Systems Business Line, Valmet K.K.
In pulp and paper mills, automation of each process has been introduced worldwide, but further millautomation has been proposed to optimize operations throughout the entire mill.
This optimization of factory-wide operations is called "Operation 4.0," and is the next step in
optimization technology that is attracting worldwide attention.
In conventional optimization technologies for each process, optimization control is added to the issues
and areas that can be improved in each process to enable more efficient operation of the process. This
has resulted in reduced chemicals, reduced energy consumption, increased production output,
improved quality, and reduced emissions.
Optimization throughout the mill, with a special focus on the inter-processes, can reduce losses
between processes and further improve efficiency.
As a manufacturer capable of providing equipment, machines, automation products, and services forpulp and paper mills, Valmet has developed this mill-wide optimization with the support of its experts.
Valmet offers this solution as "Mill Wide Optimization".

Effect of introducing the boiler combustion control optimization system
Kai Matsubara
Kanto Mill（Katsuta）,Hokuetsu Corporation
In Hokuetsu Corporation Kanto Mill (Katsuta site), the No.2 biomass boiler (2B) and No.2 steam
turbine generator (2T/G) generate steam and electric power for the whole facilities, and the surplus
electricity is supplied outside for sale. The 2B mainly uses wood chip derived from construction waste,coal, and paper sludge and waste plastic generated inside the mill. On calorie basis, about 90% of thefuel is wood chip and paper sludge, about 1% is waste plastic, and the rest of around 10% is coal.
Fuel supply is controlled by DCS automatically, under the condition of keeping the amount of power
generation constant due to power selling. As a result, the main steam pressure fluctuates greatly,
reducing the combustion efficiency of the boiler. Therefore, this time, we introduced the boiler
combustion control optimization system (ULTY-V plus), which has a proven track record in coal boilers.
By suppressing pressure fluctuations with this system, we worked to improve the combustion
efficiency of the boiler and reduce the fuel consumption.
Comprehensive Solutions for Utilizing Recycled Paper by KURITA
Satoshi Wada
Pross Technology Department, Kurita Water Industries Ltd.
Failures such as defects and paper breakage originating from recovered paper materials can becaused by a variety of factors.
We have developed a highly accurate analysis method that can quantitatively and quickly estimate
the causes of these problems by using continuous water quality measurement with the S.sensing®
system and DX for data analysis.
This method can also be used to predict future problems that may occur in the future.
Because this analysis method can be universally implemented quantitatively by anyone, we believethat it can supplement the transmission of empirical knowledge due to manpower shortages and theretirement of veteran operators, which is expected to be a problem in the future.
By appropriately combining the various countermeasure methods, including our own water
treatment chemicals, for the highly influential factors related to water treatment derived from thisanalysis method, we will be able to implement highly accurate countermeasures against failures.
Proposal to control color quality and to reduce the loss in the production line by high precision color
sensorHiroyuki Fukuhara
Sales & Marketing Division, X-Rite
It is very important to manage the color of paper as well as the other factors which need to be undercontrol. It seems not to be discussed enough how to manage the color. This time I will explain about
the importance of the color sensor as an input device with some examples.
DX Initiatives for In-house Power Generation Facilities
Nobutaka Maki
Energy Technical Department, Energy Business Division,
Nippon Paper industries CO., LTD.
As our company, where the necessary factory energy is provided by in-house power generation
facilities, one of our major challenges is to control breakdowns, as boiler breakdowns have a significant
impact on production. However, with experienced employees retiring every year, it is difficult to pass ontechnology through paper-based information exchange alone, and occurrence of similar breakdowns
and a decline in on-site capabilities are becoming apparent. Under these circumstances, it is close to
the limit to run the stable operation of aging facilities with only the knowledge and experience
possessed by a few individuals.
Therefore, in this theme, I would like to introduce some of our efforts to break away from theoperation method based on personal knowledge and experience by utilizing digital technology, focusing
on the digitalization of operation information and changes in operation monitoring methods.

Pulping of Mitsumata by using Twin Screw Extruder
Naoichi Muto, Takashi Okuda and Takuma Teraoka
Research Institute, National Printing Bureau, JAPANThe bast fiber of Mitsumata(Edgeworthia papyrifera Sieb. et Zucc.) has traditionally been used
as a raw material of paper. Mitsumata belongs to Thymelaeaceae family, and the paper made fromits bark is known to have hue of egg yolk color and unique texture. Mitsumata pulp for paper
making is manufactured as follows. Mitsumata branches are steamed and barks are taken off, fromwhich its epidermis and cuticle are removed. Then, the residual white bark is cooked with anaqueous alkaline solution in the digester. Compared to the chemical composition of wood, the whitebark contains more amount of pectin and less amount of lignin. So, pulping of Mitsumata primarily
aims to remove pectin that works as a binder among cells, and pectin in the white bark can beremoved by alkaline solution under heated.
In this research, we used twin screw extruder to produce Mitsumata pulp from its white bark.
Twin screw extruder consists of two co-rotating screws in a cylinder barrel, and it is widely used in
the manufacturing industry for material processing such as shearing, kneading, heating andmixing. The white bark is impregnated with an aqueous solution of sodium hydroxide before
defiberizing by twin screw extruder. The process of twin screw extruder is continuous and its
processing time is short compared to normal cooking process.
The effect of processing temperature and addition rate of sodium hydroxide on defiberizing of
Mitsumata fiber was investigated. We found that Mitsumata fibers could be defiberized by twin
screw extruder at lower temperature than cooking process.
Handsheets were made from the pulp produced by twin screw extruder, and their optical andphysical properties were studied. The ISO brightness of the handsheet produced by twin screw
extruder was high compared to the handsheet produced by normal cooking process. The pulp yieldproduced by twin screw extruder was also higher than the yield by cooking process. The sidechemical reaction is considered to be suppressed during the extrusion process because of the low
processing temperature and the short processing time.

JAPAN TAPPI JOURNALCONTENTS

4

April 2023

Vol. 77 No. 4

Welcomig New Employees
2 Contribute to Saving Energy and Maintenance and Low Noise for Aeration
Blower and Flotator Blower―New Technology Linked by IoT Support Stable Operation of Wastewater Treatment
with Cloud Monitoring and Machine Learning―……Daiki Yamaura and Go Kawazu

7 Abrasion Mechanism and Characteristics of Cast Material for Refiner Plates……Masahiro Matsushima

11

Latest Mechanical Seal Face Technology―OperAtional Reliability Improvement by Technical Specialty of Seal Face―……Atomu Ono

16

Shaft Voltage Measurement to Protect Roller Bearings……Yuta Konishi

20

Innovative Roll Handling Module Driven by Compressed Air……Kazuho Imagawa

24
29
31

The Approaches to Achieve Efficient and Simplified Pest Management……Takeo Ishizaki

Effect of Two Colors of New UV-Absorbing Films on the Adult Chironomids……Goro Kimura, Hiroyuki Watanabe, Mitsuteru Hirono and Michio Yamada

Speedy! Safety! High Repeatability! ABB L&W Reliable Paper Testing
Technology―L&W New Testing Method Provides New Quality Management Way―……Hiromichi Yoda

36

Development of the New Formation Tester “FMT-4”……Kazuhiro Nomura

41

Report on the Results of the Fiscal 2022 Follow-up Survey on “JPA’s Carbon
Neutrality Action Plan” and Related Information on Measures against Global
Warming in the Japanese Paper Industry……Yasuharu Sakina

Introduction of Research Laboratories（150）60

Laboratory of Applied Microbiology and Microbial Metabology, Department ofBiochemistry and Molecular Biology, Faculty of Agriculture and Life Science,
Hirosaki University

Research Report（Original Paper）

65

Novel Analysis of Recycled Pulp-Containing Paper, Including FluorescentWhitening Agent:Part 1 Confocal Laser Scanning Microscopy Method……Atsushi Narita, Susumu
Kawanobe, Satoshi Nakaba, Ryota Kose, Ryo Funada and Takayuki Okayama
Pulp and Paper Mills in Japan（102）85

Kani Mill, Daio Paper Corporation

03
62
63
90

Committee report
Essay on Intellectual Property
Coffee break
Papyrus

95
99
105
106
108

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 April JAPAN TAPPI JOURNAL
Vol.77, No.4 Abstracts

Contribute to Saving Energy and Maintenance and Low Noise for aeration blower and flotator blower
New technology linked by IoTSupport stable operation of wastewater treatment with cloud monitoring and machine learning
Daiki Yamaura
Fluid Sales Division, ShinMaywa Industries, Ltd.
Go Kawazu
Design Department Ono Plant Fluid Division, ShinMaywa Industries, Ltd.
In this paper I would like to introduce the advantages and technologies of TurboMAX turbo blower.
TurboMAX turbo blower consists of superior technologies like air-foil bearing, permanent magnet
synchronous motor, high efficiency impeller, high speed control technique and so on. As for the overall
structure, blower, motor, inverter, touch panel controller and blow off valve are installed in one enclosure.
This is a new style turbo blower called “air foil bearing-variable speed-single stage turbo blower”.
Compare to the conventional blowers, TurboMAX turbo blower has many advantages in “Savingenergy”“Low noise and vibration”“Saving maintenance cost”“Space-saving and lightweight”. Especially,
compare to the conventional root blowers, TurboMAX turbo blower can reduce power consumption by
20% on average.
As global warming is serious issue around the world now, reducing the power consumption is required
to all industries regardless of its type and scale. Especially for paper industry which uses and disposes alarge amount of water, reducing the cost for waste water treatment is a big challenge. In the process ofwaste water treatment, aeration blower's power consumption makes up the large proportion, andaeration blower usually runs for 24 hours every day. So, high efficiency aeration blower can contribute to
the cost reduction of waste water treatment significantly.
In the latter half of this paper, I introduce an actual case of replacing 2 root blowers with 1 turbo blower(MAX100) at municipal sewage-treatment plant for the field trial. As the result, we could confirm 25%
energy saving, 16dB noise reduction, 25μm vibration reduction, and 6℃ blower room’s temperature
reduction.
ShinMaywa Industries, Ltd. launched TurboMAX turbo blower since 2012 in Japan, and some blowers
have been delivered to paper factories. As for paper factory, we have delivered blowers to 8 paper factories
so far and 12 blowers are in operation now. Especially, one of these blowers are used for flotator which isused in the deinking process during manufacturing recycled paper from used paper, and we confirmed
TurboMAX turbo blower can reduce power consumption in non-aeration use too. I expect TurboMAX
turbo blower can reduce the power consumption in many other uses too. I hope TurboMAX turbo blower
contributes to the energy saving in many fields and it leads to the reduction of environmental burden of
the globe.
Abrasion Mechanism and characteristics of cast material for refiner plates
Masahiro Matsushima
Research & Technology, NIDAK Corp.
Investigation of the reason why refiner segment’s blade made by abrasion resistant hard material
will wear during refining pulp which is much softer. Investigation was performed by observing wornout section of used refiner segment.
Based on customers evaluation of abrasion resistance of refiner segment materials obtained during
their actual operation, several laboratory abrasion tests were performed to find which test method
leads to results closest to customers actual operation results. Throughout the tests micro structure
image analysis, micro area hardness test and multiple regression analysis were also performed toconsider influencing factors for the abrasion resistance.
As a result, Suga system abrasion test showed the closest results to the customers actual operation
results and largest Influencing factors were as following in influencing order;①Hardness of Eutectic carbide ②Hardness of other carbides ③Volume of Eutectic carbide ④Bulk
hardness ⑤Max. Dia. of Eutectic carbide ⑥Min. Dia. of Eutectic carbide, ⑦Volume of other carbide.

Latest Mechanical Seal Face Technology―Operational reliability improvement by technical specialty of seal face―
Atomu Ono
Sales Dept., John Crane Japan, Inc.
In the pulp and paper industry, many rotating equipment peculiar to this industry are used. In
addition, these are often difficult operating conditions for mechanical seals. There are many voices ofissues and requests for improvement such as seal performance improvement, complex auxiliary systems,
reducing repair frequency and maintenance costs, operational reliability improvement, and reducing
water usage.
We have solved many difficult problems by using our own product development and technology as aseal manufacturer. Fully split seal and auxiliary wet seal system which can reduce water usage
introduced until last year are part of solutions that represent our company. Also, we picked up latest seal
face technology as a theme of this year and introduce following three technologies and its successful cases.
Case-1, problem for unstable pressure resource, heat load and slurry damage on inboard seal, and highload on outboard seal can be resolved by USP seal. Inboard seal surface of the seal has a unique surface
groove structure, and the seal water (barrier water) is taken in between seal surfaces. Then, seal water
is pressurized and pushed into process fluid side. The seal has same seal performance as a double
arrangement seal.
Case-2, seal face damage problems which are caused by slurry, insufficient lubrication, and heatgeneration of the seal can be resolved by John Crane Diamond™ seal face material. This material of seal
face which has higher wear resistance and chemical resistance than general hard face materials, and at
the same time, it has a lower coefficient of friction than carbon face material.
Case-3, steam leakage issue on shaft sealing device of steam turbine can be resolved by Type-28ST drygas seal. The seal has surface groove and can reduce leakage drastically.
These high-value-added technologies are used on wide range of applications. And, these are used not
only improve productivity and reduce costs, but also contribute to environmental conservation, such as
stable operation of rotating equipment, longer life of shaft seals, and reduction of equipment load.
Shaft Voltage Measurement to Protect Roller Bearings
Yuta Konishi
Engineering Department Seals Motion Control, Fukuda Corporation
In this paper, we introduce bearing premature failures due to bearing currents, which mostly exist
when motors are operated by Variable Frequency Drives (VFD). In the past few decades, a number ofpulp and paper mills have experienced bearing failures such as fluting, also known as ridge marks or
washboard patterns. However, bearing currents also degrade lubricants in bearings and/or on gearbox
gears. To evaluate its risk, we introduce how motor shaft voltages are measured and a remedy of thegrease degradation in addition to bearing premature failures.
Innovative roll handling module driven by Compressed air
Kazuho Imagawa
Matsubo Corporation
Many paper manufacturers install or consider automatic roll handling equipment, but conventional
equipment requires large space, foundation work for pit and long non running period for installation.
These causes cost increases, decreases in production and inflexibility of roll handling routes. Additionally,
manual hand transportation is a big burden to operators, and it also has a risk for an accident. Therefore,
The Finnish company called “MoveRoll” developed an innovative roll transfer equipment which can solve
those issues. It makes the automatic roll handling simpler, cheaper and safer. MoveRoll various
applications of the unique conveying system can help most of paper manufacturers reduce manpower
and improve safety in paper mill inter logistics.

The Approaches to Achieve Efficient and Simplified Pest Management
Takeo Ishizaki
Earth Environmental Service Co., Ltd
We need efficient and simplified pest management abilities suited to the times, because many factories
have limited staff and time to spare for pest management due to a decrease in population, the reform ofworking practices, and COVID-19 pandemic.
In this paper, I examined some points in order to solve these problems. First, we have to build PlanDo-Check-Action cycle(hereinafter called “PDCA-cycle”). It is important to set on appropriate objectives
for pest management in specific to make PDCA-cycle work smoothly and efficiently, and also to matchseveral inspection activities to the needs precisely.
As for the monthly improvement activities, if we apply measurements based on the characteristics ofinsects or root cause of the problems, it helps to cut extra time. We can also shape the meeting style inorder to have simpler related meetings, and our ESCOEVO system is particularly beneficial method toshorten the meeting time, to help factory staff understand what they should do, and to promote
preventive pest controls.
At last, I introduce the latest rat-monitoring system called “Pescle”,which we developed in partnershipwith Ryoden Trading Co.,Ltd.. One of the most differentiated features of it is that it solves the problems
for on-line monitoring systems that we have to check the rat-monitoring devises on site due to somemisdetections. Using our original AI techniques, we can only get accurate information, so that we cancontribute to formulation of sustainable pest-control systems.
Effect of two colors of new UV-absorbing films on the adult chironomids
Goro Kimura
Technical Research Laboratory，Ikari Shodoku Co.,Ltd.
Hiroyuki Watanabe, Mitsuteru Hirono
Business Development Division，Ikari Shodoku Co.,Ltd.
Michio Yamada
Taisei Fine Chemical Co.,Ltd.
The use of UV-absorbing films that block near-UV light radiation in factory has been shown to beeffective for preventing pests from entering factory. However, our previous study indicate that there wasno significant difference between the attracted number of adult chironomids with a white fluorescentlamp (with UV radiation) and a white LED lamp (without UV radiation). In the present study, we
attempted to clarify the preventing effect of red and green colors of new UV-absorbing films on the adultchironomids in the field. The collection number of chironomid adults in the UV-absorbing film treatmentof each color was significantly lower than the without film (control experiment). The results suggest that
UV-absorbing film is one of the useful method of control of nuisance chironomid adults.
Speedy! Safety! High repeatability!
ABB L&W reliable paper testing technology-L&W New Testing Method provides new quality management wayHiromichi Yoda
Division manager, Process Industry Division, ABB K.K.
Currently, industry got strong pressure from the market because Japan government announced
carbon neutral industry by 2050. In Japanese industry, especially material industry, there are several
serious potential issues like lack of human resource due to less attractiveness for young people,
retirement of baby boomer and the technical transfer. On the other hand, there are bright future in paperindustry because paper is excellent material for plastic reduction and new functional material, Cellulose
Nano Fiber.
ABB started following four approaches to cooperate with customer to solve facing issues.
1) Reliable and high performance online measurement for Refiner, Wet end control
2) Cutting-edge fiber analyzer for new material development3) Speedy, Safety and high precise paper testing machine
4) High speed, high precise and reliable automated paper testing machine
In the paper, 3) Speedy, Safety and high precise paper testing machine is described. You can understandnew method for paper flatness and CMT plateau measurement which allows you to have quick andprecise measurement for process optimization.

Development of the new formation tester "FMT-4"
Kazuhiro Nomura
NOMURA SHOJI CO., LTD.
We have developed the new model of the formation tester "FMT-4" and will start selling it. FMT is thelight transmission type formation tester that has sold more than 70 units in total to paper manufacturers
and non-woven fabric manufacturers in Japan and overseas since the release of the first generation
FMT-100 in 1990. In this development, which is the fourth generation, it is possible to strengthen andadjust the transmitted light by adopting an LED unit for the light source of the transmitted light for the
first time. It is now possible to measure thick paper with a basis weight of about 300 g/m², which was
not possible with the previous model. The housing has also been revamped, making it possible to installit in a smaller space by realizing a more compact design. We will introduce the basic functions of theformation tester and the points that have been renewed in the "FMT-4".

Report on the Results of the Fiscal 2022 Follow-up Survey on” JPA’s Carbon Neutrality Action Plan” andRelated Information on Measures against Global Warming in the Japanese Paper Industry
Yasuharu Sakina
Japan Paper Association
The Japan Paper Association (JPA) established its “Voluntary Action Plan on Environment” in 1997,
in response to The Japan Business Federation‘s call to the Japanese business community to organize“The Voluntary Action Plan on Environment”. Since then, JPA has carried out a follow-up survey andpublished the results every year.
As the Voluntary Action Plan finished in fiscal year (FY)2012, JPA newly started “the Action Plan
towards a Low Carbon Society” which is renamed “Carbon Neutrality Action Plan (Phase II)” this year
and has been actively addressing global warming prevention in order to achieve the following targets set
in the plan: Reduce energy derived CO2 emissions by 38％ by FY2030 from the FY2013 level .
 As a source of CO2 absorption, increase total forest plantation area at home and abroad by
375,000 ha to 650,000 ha by FY2030 from the FY1990 level .
According to the results of FY 2022 follow-up survey (actual results for FY 2021), fossil-energy derived
CO2 emissions in FY 2021 was 15.83 million tons, which is 0.19 million tons higher than those in FY
2020(15.64 million tons) but is 3.0 million tons lower compared to those in FY 2013(18.83 million tons).
This is attributed to each manufacturer’s active efforts including energy saving and energy conversion
from fossil energy to non-fossil energy such as biomass energy.
In addition to the results of the follow-up survey, this report introduces the current energy situation in
the Japanese paper industry.

Novel analysis of recycled pulp-containing paper, including fluorescent whitening agent:
part 1 confocal laser scanning microscopy method
Atsushi Narita, Susumu Kawanobe,
Graduate School of Agriculture, Tokyo University of Agriculture and Technology
Satoshi Nakaba, Ryota Kose, Ryo Funada and Takayuki Okayama
Division of Natural Resources and Eco-Materials, Institute of Agriculture,
Tokyo University of Agriculture and Technology
In recent years, the use of recycled pulp-containing paper has spread widely with the increase in therecovery rate of wastepaper. This increased use is sustained by the concern regarding environmental
pollution and the concept of sustainable development. In Japan, the “Law Concerning the Promotion of
Procurement of Eco-Friendly Goods and Services by the State and Other Entities” stipulated in 2009that the percentage of wastepaper pulp should be at least 70% for recycled copy paper and 60% forrecycled printing paper as the eco-friendly products1). Recently, a precise method to assess thewastepaper pulp content in recycled paper products has been required with the increasing use ofwastepaper pulp.
A new method using a confocal laser scanning microscope (CLSM) to assess wastepaper pulp content
in recycled pulp-containing paper was tested in this study. Most printing and writing papers containfluorescent whitening agents that enhance the whiteness of paper and, partially remain after recycling
treatment. This characteristic can be used to distinguish wastepaper pulp from virgin pulp.
A wastepaper pulp sample was prepared using a typical deinking treatment of handsheets made from
hardwood bleached kraft pulp and bleached chemi-thermomechnical pulp (BCTMP). A controlled
amount of fluorescent whitening agent was added to the pulps. Several recycled handsheets wereprepared by changing the ratio of wastepaper pulp to virgin pulp. Images of pulp fibers with the adhered
fluorescent whitening agent were observed without breaking the form of the sheet, and the difference
between the wastepaper pulp content was confirmed by CLSM. Following image analysis, it was foundthat the mean intensity of the images of the handsheets correlated well with the actual wastepaper pulp
contents.

JAPAN TAPPI JOURNALCONTENTS

5

May 2023

Vol. 77, No. 5

Plastics substitution
1 SEIKOAT® T-EF201, a Novel Non-fluorinated Oil-resistant Coating AgentCapable of Maintaining High Air Permeability of Paper……Teruyuki Matsushima
6 Development of Water-based Coating Agent for Paper Packaging Materials……Teruaki Sato

12

Introduction for VOITH Group Pilot Coater and Development Activity of Barrier
Coating Paper using Curtain Coater……Toshihiro Katano

16
20

Technologies for Reuse of Beverage Paper Packages……Atsuhiro Terashima
Development of Biomass Plastics Derived from Wood Pulp……Yusuke Yataka

24

Development of Applications for Non-beverage Paper Container “SPOPS” andFuture Plans……Takaharu Noda

28

Development of Paper Packaging for Plastic Reduction……So Satou, Kazuki Azumagawa and Yusei Kawanami

33 Development of Biomass Based Non-Woven Fabric for Thermoforming, “Kinarito”……Sakura Miyazaki, Hiroyasu Tachibana, Hiroki Yamamoto and Hitoshi Ishizawa

37

Market Deployment of Micro Cellulose Beads……Hirohumi Maeda

Topics & Information

41
48
53

Adsorption Thermal Storage System “Mega stock” by Using Waste Heat……Takamasa Ooyama, Haruyuki Kamata, Yoshiaki Kawakami, Takuji Nakata andMasayuki Tanino……Kai Matsubara
Initiatives for Low-Carbonization in Kanto Mill（Katsuta）

Research Projects of Universities and Government Research Institutes……Wood Science Committee, JAPAN TAPPI

Pulp and Paper Mills in Japan（103）63

Ebetsu Mill, Oji F-Tex Paper Co., Ltd.

03
62
67

Committee report
Coffee break
Papyrus

71
75
82
83
85

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 May JAPAN TAPPI JOURNAL
Vol.77, No.5 Abstracts®
SEIKOAT T -EF201, a Novel Non-fluorinated Oil-resistant Coating Agent Capable of Maintaining High Air

Permeability of Paper
Teruyuki Matsushima
PAPER CHEMICAL BUSINESS DIVISION, SEIKO PMC CORPORATION
A fluorinated oil-resistant agent was used to impart oil resistance to paper, but there have been cases
where an organic fluorine compound must be replaced with an alternative because of concerns about
health and the environment. However, it is difficult to obtain the same oil resistance as a fluorinated oilresistant agent. In addition, when a non-fluorinated oil-resistant agent such as acrylic is used, the airpermeability of the paper is reduced and it becomes difficult for steam to escape, which deteriorates the
texture of French fries and other fried foods.
This paper introduces “SEIKOAT T-EF201”, a new a non-fluorinated oil-resistant agent that canmaintain high air permeability of paper while being a non-fluorinated agent.
"SEIKOAT T-EF201 has characteristics below:
・High oil resistance and high air permeability comparable to a fluorinated oil-resistant agent
・The percentage of biomass material in the solid content is more than 95%
・Biodegradation degree (relative value) of more than 750
・Conform to FDA21CFR § 176.170, § 176.180“SEIKOAT T-EF201” is a more environmentally friendly oil-resistant coating agent that has highly
containing biomass and has the characteristics of being biodegradable.

Development of water-based coating agent for paper packaging materials
Teruaki Sato
Research & Development H.Q., Water-Based Polymer Development Dept., Arakawa Chemical Industries, Ltd.
Environmental pollution caused by improperly treated plastic waste is one of the environmental
problems that must be dealt with on a global scale. In particular, the amount of plastic waste discharged
as packaging material is 69% of the total amount of plastic waste1), therefore it is more important to
reduce the amount of plastic used in packaging material to prevent environmental pollution.
"Paper," which is a biomass material that exhibits biodegradability, is attracting attention as asustainable material that can replace plastic, and new paper packaging materials with excellent plastic
functions such as water vapor barrier resistance, oil resistance, water resistance, heat sealability,
flexibility, and tear strength are being actively developed. In the field of food wrapping paper, thedevelopment of fluorine-free oil-resistant paper is being promoted against the background of stricter
restrictions on the use of perfluoroalkyl substances, which may pose a health risk. Therefore, we aredeveloping functional water-based products (AW series) to solve these sustainability issues.
In this paper, we introduce AW-500, AW-102, AW-200 from AW series, which are functional waterbased coating agents for paper packaging materials that have been developed focusing on the functionsof water vapor barrier, heat sealability, and oil resistance. We will also report on the development statusof products compatible with Positive List System for Utensils, Containers and Packaging.

Introduction for VOITH Group Pilot Coater and Development Activityof Barrier Coating Paper using Curtain
CoaterToshihiro Katano
Application Eng. Dept., Voith IHI Paper Technology Co., Ltd.
In recent years, plastic products have been replaced by paper products as part of attempts to reduce
environmental impact in order to realize a sustainable society. The VOITH Group has been
contributing to this environmentally friendly trend by providing customers with access to its pilot
coater and coating technology know-how in Heidenheim, Germany and Motomiya, Fukushima
Prefecture.
The VOITH pilot coater in Heidenheim has recently undergone improvements, with a particularfocus on its drying capacity and curtain coater. Here, we would like to introduce the Heidenheim pilot
coater.
We will also introduce our pilot coater facility in Motomiya City, Fukushima Prefecture, and ourdevelopment activities related to barrier coatings.

Technologies for Reuse of Beverage Paper Packages
Atsuhiro Terashima
Itochu Machine-Technos Corporation
This time, we will introduce a cavitation pulper made by Repulping Technology, Germany, aseparator for multi-layered substrates made by Saperatec, Germany, and a hydrodynamic friction
washer made by HydroDyn, Germany, under the theme of reuse of beverage paper packages. The
SDGs, adopted at the United Nations Summit in 2015, aim to achieve a sustainable and better world
by 2030, and we believe that the equipment and technologies we introduce will overcome challenges
that are difficult to be addressed with existing technologies in recycling for the effective use ofresources. In order to recycle beverage paper packages, it is necessary to separate paper fromlaminated polyethylene and aluminum, and furthermore, to clean ink and dirt, which is difficult todo efficiently with existing technologies. Repulping Technology's cavitation pulper separates paper
from other impurities; Saperatec's multi-layer material separator separates polyethylene fromaluminum; and HydroDyn's hydrodynamic friction cleaning equipment de-inks on film.
We hope that the widespread use of these technologies for recovering paper, aluminum, andpolyethylene from beverage paper packages will help realize the reuse of resources.

Development of biomass plastics derived from wood pulp
Yusuke Yataka
Innovation Promotion Division, Oji Holdings Corporation
The functions and low costs of conventional plastics are of essence for our daily and modern life in thesedays. In the view of sustainability of our globe, we have to care about the emission of the global warming
gas and spilling out of the plastics which potentially turned into microplastics. Biomass plastics being
good alternatives for them, we still have been confronting some difficulties especially about the material
procurement. Therefore, our company have been developing a novel production process for biomass
plastics derived from wood pulp for paper making.
We had developed the technology for transforming wood pulp to ethanol which is material for ethylene
by biochemical process with yeast. As a beginning of our project, we examined the reproducibility of thetechnology and manufactured pulp derived ethanol at small and large scale. The ethanol was converted
to ethylene by a chemical process which was followed by the polymerization to polyethylene. Purification
method that was established to obtain highly purified pulp derived ethanol employed pulp derived
polyethylene production.
Manufacturing of pulp derived polylactic acid was also achieved. The raw lactic acid was also obtainedby fermentation, whose yeast was replaced by lactic acid bacteria.

Development of Applications for Non-beverage Paper Container "SPOPS" and Future Plans.
Takaharu Noda
Paper-Pak Sales Division, Nippon Paper Industries Co., Ltd
Nippon Paper Industries has developed and commercialized a paper container "SPOPS" for nonbeverage applications such as cosmetics and daily necessities. It enables to improve usability at the sametime it is eco-friendly. Recently, it has been applied for hand sanitizer containers and for containers for
products with new business models such as subscription services for daily necessities. In addition, a highspeed filling machine has been developed that improves productivity and it is expected that SPOPS will
be adopted by major brands. In the future, we would like to promote the recycling of used cartons of
SPOPS and enter the global market.
Development of paper packaging for plastic reduction
So Satou, Kazuki Azumagawa and Yusei Kawanami
Innovation Promotion Division, Oji Holdings Corporation
Pillow packaging bags made of paper-based materials have been attracting attention from theviewpoint of reducing plastic usage. However, the application of paper materials to the pillow packaging
has been limited due to the difficulty in ensuring required quality such as strength, water- and oilresistance, barrier properties, and printability. In order to have paper pillow packaging used in more
fields of applications, we have developed two paper-based packaging materials. One is a highly flexible
packaging material that has high puncture strength at the same time. This packaging material isrelatively resistant to pinhole formation and is not easily wrinkled during bag manufacturing. The otheris a packaging material, in that variable information such as expiration dates, lot numbers, barcode, andQR can be printed with a UV laser. As the information can be printed without direct contact withprintheads, printing defects such as faint printouts can be avoided and high quality printing is possible
even on paper-based materials where the surface is not smooth. This report introduces the details ofthese two newly-developed packaging materials.
Development of biomass based non-woven fabric for thermoforming, "Kinarito"
Sakura Miyazaki, Hiroyasu Tachibana, Hiroki Yamamoto, and Hitoshi Ishizawa
R&D Division, Oji Kinocloth Co., Ltd
We have developed a novel airlaid nonwoven fabric that is made from biomass materials, such as pulp
and polylactic acid (PLA). This nonwoven fablic, named Kinarito, possesses good biodegradability due toits designed composition. Kinarito can not only be used as is biodegradable nonwoven fabric but also bethermoformed into various packaging shapes. Its features and possible applications are discussed.
Market deployment of Micro Cellulose Beads
Hirohumi Maeda
Rengo Co., Ltd.
Plastic products used in a wide variety of situations, from packaging containers to household products,
are essential materials in our daily lives. However, ocean plastics problem has become a global issue. In
addition to plastic debris that is not properly processed and flow into the ocean while maintaining its
shape, miniscule pieces of plastic which called microplastics, are also a serious problem that affects theecosystem.
Microplastics include those that are affected by waves and ultraviolet rays during the process ofentering the ocean and become small plastic particles, as well as plastics originally found in abrasive
compound, face washes, and cosmetics, which are smaller in size. Microplastics are difficult to be
removed by wastewater treatment and are said to be discharged into the ocean with little or no recovery,
remaining in nature for hundreds of years.
We have been manufacturing and selling biodegradable cellulose beads named "Viscopearl" since 1995,
and in April 2022, we started its operation of a new plant for small-diameter cellulose beads, which are
expected to be an alternative material to microplastic beads. In this paper, we introduce the features ofcellulose beads as well as their future market development.

Adsorption thermal storage system "Mega stock" by using waste heat
Takamasa Ooyama ,Haruyuki Kamata,Yoshiaki Kawakami,Takuji Nakata and Masayuki Tanino
Takasago Thermal Engineering Co., Ltd.
We have developed the open-cycle type adsorbent thermal storage system, so called “MegaStock”. Based on adsorbent of HAS-Clay, the thermal storage system can utilize the lowtemperature waste heat. In the offline heat transportation type, the thermal storage tank charged
in the co-generation system was transported by the tractor-trailer and used to heat up water andair in a swimming center. The adsorption heat storage system was evaluated through three kindsof seasons: summer, interphase, and winter. By the tests the regenerating efficiency of 90% ormore was confirmed. On the other hand, we performed the demonstration test of the offline heattransportation from the charged thermal storage in the co-generation system to the air handling
unit (AHU) of painting process by the tractor. The energy consumption of the cold and hot waterused in AHU decreased by dehumidifying the air which flowed into AHU with the thermal
storage tank. And, the CO2 reduction effect of 57% was confirmed from the test.

Initiatives for low-carbonization in Kanto Mill(Katsuta)
Kai Matsubara
Kanto Mill（Katsuta）,Hokuetsu Corporation
In Hokuetsu Corporation Kanto Mill (Katsuta site), the No.2 biomass boiler (2B) and No.2 steam
turbine generator (2T/G) generate steam and electric power for the whole facilities, and the surplus
electricity is supplied outside for sale. This boiler mainly uses wood chip derived from construction waste,coal, and paper sludge and waste plastic generated inside the mill. On calorie basis, about 90% of thefuel is wood chip and paper sludge, about 1% is waste plastic, and the rest of around 10% is coal.
Our company set a goal in 2021, that it will achieve virtually zero of carbon dioxide emission by 2050.
For this goal, we have already started efforts to reduce coal used for fuel in 2020. In this report we
introduce the examples of coal reduction so far and future policies.

JAPAN TAPPI JOURNALCONTENTS

6

June 2023

Vol. 77, No. 6

Energy Saving Ⅰ
1 Report of the 27th Saving Energy Seminar……Energy Committee, JAPAN TAPPI
4 Activities of Kawasaki Heavy Industries for Realization of International
Hydrogen Supply Chain……Terukuni Toge
11
17

Introduction of Carbon Neutral Technology to Improve of Power Generation
Facility for Pulp and Paper Mills……Naoto Hasegawa
tate-of-the-art Integration of Energy Balance by Andritz―A Futuristic Pulp Mill with Integration of Fiberline and Recovery Processes―……Tsukasa Katayama, Ryo Yoshida and Masato Tsuchitana

22
27
31

Start up Experience of a Biomass boiler……Kazuto Taguchi
The Activities for Energy Saving in Ohe Mill……Shoya Ishikawa
Activities for Energy Saving in Takaoka Mill……Satoshi Masugi

36

Challenges of Energy Saving in Kasugai Mill……Shota Oi

Topics & Information

42
47
53

Andritz Proposal for CO2 Reduction at Pulp Mill

―Sootblower ACE for Recovery Boiler―……Shuhei Yamamoto, Takahiro Hanazawa and Kanji Hagiwara

Valmet Technology for Energy Saving and Reducing CO2 Emissions in Pulp
Mills……Yoshiro Nishihara
Revision of the JIS P 8150

Paper and board -Determination of color by diffuse reflectance- Indoor daylight conditions（C/2°）……JAPAN TAPPI, Pulp and Paper Testing Standards Committee

Introduction of Research Laboratories（151）56

Laboratory of Forest Products, Faculty of Agriculture, Yamagata University

03
58

Committee report
Essay on Intellectual Property

59
64
72
73
75

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 June JAPAN TAPPI JOURNAL
Vol.77, No.6 Abstracts

Activities of Kawasaki Heavy Industries for Realization of International Hydrogen Supply Chain
Terukuni Toge
Project Group, Hydrogen Strategy Division, Kawasaki Heavy Industries, Ltd.
In order to achieve a "Carbon-Free Society" where society as a whole will reduce greenhouse-gas
emissions to reach zero net carbon emission by 2050, the use of renewable energy as alternatives to fossil
fuels is required. However, renewable energy has issues that it requires a bigger resource input andphysical footprint than fossil energy due to its low power density, and that a stable power supply is not
likely to be expected due to the meteorological effect. Hence, expectation and interest in hydrogen energy
are increasing as the last resort.
Kawasaki Heavy Industries (hereafter KHI) is the only company that owns a series of core technology
regarding hydrogen production, transportation, storage, and utilization. KHI has been developing
technologies to produce hydrogen from untapped resources overseas and transport it to final destination,
Japan. In the field of hydrogen transportation and storage, KHI built not only the largest liquefiedhydrogen storage tank in Japan at Kobe LH2 Terminal (Hy touch Kobe) but also the world’s firstliquefied hydrogen carrier “SUISO FRONTIER”. On February 2022, KHI succeeded in the world’s firstmaritime transport demonstration of liquefied hydrogen from Australia to Japan, which is produced
from untapped brown coal in Latrobe Valley of Victoria, Australia. As for hydrogen utilization, KHI
installed cogeneration facility with 1 MW gas turbine as the core, which is fueled by hydrogen andnatural gas, in Kobe Port Island, and succeeded in the world’s first delivery of both energy and heat inan urban area generated using a gas turbine fueled by 100％ hydrogen on April 2018.
Based on the findings from those demonstration tests, KHI will develop technologies for large-scalehydrogen production, and plans to conduct commercial demonstration in Late 2020s to realize a fullscale commercialization in 2030.

Introduction of Carbon Neutral Technology to Improve of Power Generation Facility for Pulp and Paper Mills
Naoto Hasegawa
Mitsubishi Heavy Industries,Ltd.
MHI Group has set the target of achieving Carbon Neutrality by 2040 and is aiming to abate
discharging of carbon dioxide (CO2) emissions from its own operations by 2040. As an interim stepand in line with MHI’s commitment to addressing climate change, CO2 emissions from its own
business activities will be cut in half by 2030 (compared to 2014).
This paper includes two topics for achieving carbon neutrality. One is the status of development
for hydrogen firing technology (for gas turbine and engine) and ammonia firing technology (forgas turbine, diesel engine and boiler). The other is the introduction of Takasago Hydrogen Park.
In the Takasago Hydrogen Park, the hydrogen production and storage equipment are under
installing work next to existing GTCC demonstration plant at Takasago Machinery Works,
Hyogo, Japan. This will enable validation testing of an integrated progress from next-generationhydrogen production technology to power generation utilizing hydrogen fired gas turbines. After
validating the system utilizing water electrolyzation, MHI plan to produce turquoise hydrogen bypyrolyzing methane into hydrogen and solid carbon.
In addition, we, MHI, can support to create the roadmap achieving Carbon Neutrality for pulp
and paper mills, with making alignment with Clients. Based on the Client's roadmap, we can also
contribute to supply the "Sustainable" system.

State-of-the-art Integration of Energy Balance by Andritz-A Futuristic Pulp Mill with Integration of Fiberline and Recovery ProcessesTsukasa Katayama, Ryo Yoshida and Masato Tsuchitana
Andritz K.K.
Energy conservation and the use of creative energy sources that do not use fossil fuels are the mostimportant and urgent issues for reducing CO2 emissions and preventing global warming. In kraft pulp
mills, 50% of the biomass supplied is used as green energy, making it an environmentally friendly process.
However, there is still much room for improvement. By integrating and optimizing production lines
consisting of individual processes, energy conservation and energy creation are possible.
Pulp production line operations require hot water and steam as chemical and thermal energy. These
are supplied by the recovery process. The recovery process also has the important function of generating
electricity and supplying power to the entire mill system. If the amount of steam used in the system canbe reduced, more electricity can be generated, leading to lower costs and higher profitability.
ANDRITZ is improving energy efficiency by integrating and optimizing the pulp production line and therecovery process, and is implementing processes that will enable closed systems.

Start up Experience of a Biomass boiler
Kazuto Taguchi
Tonegawa Division Paper Mills Rengo Co., Ltd.
Because of increasing awareness about environmental issues and soaring fuels price, Tonegawa
plant, Rengo, has installed a new biomass boiler that uses three kinds of fuels, such as wood chips,
RPF and waste tire. The capacity of new boiler is determined the same level as existing gas boiler and
we decided to use existing one for standby.
After we started up the new boiler, we have faced many new problems. For example, ①switching
work of high pressure steam line from existing boiler to new boiler, ②accumulating metal sludge inthe bed caused by wire of waste tire. However, we were finally able to solve these problems byreviewing operation methods and starting to check quality of fuels frequently. Although we areoperating the new boiler stable now, we still have 2 issues, such as outflow problem of sand from the
bed and determining a continuous operating period in the future. On the other hand, CO2 emission
has been decreased by increasing utilization rate of the new boiler. Therefore, we predict we will beable to achieve the target, reducing 90,000 tons-CO2/year, as original plan.

The Activities for Energy Saving in Ohe Mill
Shoya Ishikawa
Ohe Mill,Marusumi Paper Co.,Ltd
Various climate changes such as global average temperature rise and sea level rise are occurring, andas interest in environmental issues is increasing day by day, the reduction of greenhouse gas emissions
has become one of the important global issues.
In order to realize the "2050 carbon neutral" declared by the government in the fall of 2020, the"Shikoku Chuo City Carbon Neutral Council" was established in Shikoku Chuo City, where the Ohe Mill
Marusumi Paper Co., Ltd. is located. We are promoting various measures based on the recognition that
it is necessary to work on the use of new fuels and the recovery of CO2.
In addition, the Energy Conservation Law also requires a reduction in energy consumption per unit
by an average of 1% or more per year, and due to the impact of soaring raw material and fuel prices andthe appreciation of the yen, energy conservation activities are not only aimed at reducing CO2 emissions,but also reducing production costs. It is an activity that must be tackled from all aspects.
This paper introduces the energy-saving activities of the Ohe Plant, which replaces the cooling steamof the oil gun for combustion support of the fluidized bed boiler with combustion air.

Activities for Energy Saving in Takaoka Mill
Satoshi Masugi
Takaoka Mill Chuetsu Pulp & Paper Co.Ltd
The paper industry is an energy-intensive industry, and energy saving activities are an effectivemeans for environmental issues and cost reduction.
Our factory has made efforts for energy saving activities throughout the factory and has achieved goals.
However, with the progress of activities, effective projects are decreasing and in recent years it has
been difficult to achieve more energy saving targets.
In order to acquire energy saving benefits at this factory, we are working to raise employee's awarenessof energy conservation and find out new projects, mainly by members of energy conservation
management committee.
Here, we introduce examples that our factory has implemented.

Challenges of Energy Saving in Kasugai Mill
Shota Oi
Kasugai Mill,Oji Paper Co.,Ltd
Kasugai mill is working on the environmental objectives for ISO14001, such as promoting energy
conservation, reducing waste and use of sustainable resources, recycling of used paper.
In order to enable achievement of that, we set a goal 『Total primary energy reduced by 1.5% year onyear』and challenge together. This report introduces several examples of energy savings regarding lime
Kiln in Recausticizing process and also CFB (biomass boiler) plant.

Andritz proposal for CO2 reduction at pulp mill
- Sootblower ACE for recovery boilerShuhei Yamamoto
Service Sales Group, Andritz K.K.
Takahiro Hanazawa*４
Engineering Service Group, Andritz K.K.
Kanji Hagiwara
Fellow, Andritz K.K.
As of and after the summer of 2022, Japanese pulp & paper mills are likely to be in a very difficult
situation in terms of energy-related matters. Challenges include meeting the CO2 emission limitation
targets set out at COP26, strong demands from customers to reduce coal usage for the mills, rapidly
rising fossil fuel costs (coal, crude oil, natural gas), and rapidly soaring raw material costs due tounstable international conditions and the weaker Japanese yen. Japanese P&P mills are required totake strict measures to reduce energy and cost, based on the situation of their factories. We will
introduce some of ANDRITZ's technologies that can respond to the customers' situation. In addition,
we will introduce the Sootblowing ACE, a technology unique to ANDRITZ, to the sootblower used inrecovery boilers as an IT technology.

Valmet Technology for Energy Saving and Reducing CO2 Emissions in Pulp Mills
Yoshiro Nishihara
Pulp & Energy, Services business Line, Valmet K.K.
In the industrial sector, including the pulp and paper industry, energy saving and reduction of CO2
emissions, including conversion to renewable fuel from fossil fuels, are the most significant challenges
for sustainable development in the future. In the pulp and paper industry in Japan, energy saving ofpulp and paper mills is explored to meet the 2030 CO2 emissions reduction target. Valmet has acomprehensive global sustainability business and is developing technologies to reduce CO2 emissions in
the use phase of Valmet's technologies.
The introduction of the Valmet ImpBin™ - atmospheric pressure impregnation vessel- and theconversion of an existing 1-vessel digester to a Valmet OptiCook™ are typical examples of energy savingin pulp mills.
Both modifications enable to achieve high yield cooking by allowing sufficient chemical impregnation
into inside of chips at low temperatures and long impregnation time, and to reduce steam consumption
by lowering the cooking temperature.
Another example of energy saving in the washing stage is the introduction of DiConn™ with apressure diffuser (PD) at digester blow line and Valmet TwinRoll Press Evolution™ press washingmachine at brown washing stage. The former results in washing at higher temperatures in the PD,
which increases the temperature of the C8 extraction liquor as well as washing efficiency, leading to aincrease of steam generation in the flash cyclones. The latter is installed in the final stage of theunbleached washing stage to reduce the amount of washing liquor used while improving or maintaining
washing efficiency, and to reduce the amount of black liquor sent to the evaporator, which results in a
reduction in steam consumption at evaporation process.
The lignin recovery and the methanol recovery facilities from pulping process provided by Valmet havethe potential to produce fuel and generate new revenue sources for the mill.
The lignin recovered in the former is expected to become a new source of revenue for mills through thedevelopment of new applications or can be used as biofuel at a lime kiln. In the latter, liquid methanol
with low NOx and SOx content can be refined and is expected to be used for raw material or fuel andmarketing purposes.

Revision of the JIS P 8150
Paper and board - Determination of color by diffuse reflectance - Indoor daylight conditions (C/2°)
JAPAN TAPPI , Pulp and Paper Testing Standards Committee
JIS P 8150 Paper and board — Determination of color by diffuse reflectance — Indoor daylight
conditions (C/2°) specify a procedure for measuring the color of paper and board by a reflectometer.
This standard has been revised to the second edition for harmonization towards ISO 5631-1 standard.
Harmonization with corresponding ISO standards is intended to avoid confusion over test methods andfacilitate trade. This second edition cancels and replaces the first edition published in 2004.
The main changes of this edition are as follows:- 'Indoor daylight conditions' has been added to the title.
- Equipment calibration procedure measuring test pieces containing fluorescent whitening agents havebeen detailed.
- Weighting functions for obtaining tristimulus values using an abridged spectrophotometer withbandpass correction, have been added.
- The units for reading values have been changed from 0.05unit to 0.01unit, and JIS Z 8401 about
rounding of numbers has been deleted.
- Editorial and other changes have been made to first edition.

JAPAN TAPPI JOURNALCONTENTS

7

July 2023

Vol. 77, No. 7

Energy Saving Ⅱ
1 Case Study of Energy Saving at PM6 after Conversion……Tomoyuki Fujimoto
4 Energy Saving by Updating the Instrument Air Supply System……Akira Hayashi
11 Steam System Optimization and Case Studies in the Paper Industry for Carbon
Neutrality……Suguru Onda
16 Company-wide Steam Traps Upgrade for Energy Saving……Hideharu Yoshimura
21 Energy-saving and CO2 Reduction by Means of Fuel Conversion and Other
Measures……Tatsuya Bandou
26 Energy Savings through the Renewal of the Gas Turbine Cogeneration System……Hironori Nishiura

31 Energy Saving and Work Environment Improvement by Heat Shield Material“Top Heat Barrier”……Teruyuki Fukushima
33 Development of Ammonia Combustion Technology Development for Coal Fired
Power Station……Shinji Masaki
38 Low-carbon and Decarbonization Approaches for Thermal Energy―Importance of Decarbonizing Across the Continuum from Low-carbon Measures in theTransition Period―……Hiroshi Yoshida

Topics & Information

45 Performance Improvement for an ESP, by Replacing T/R sets, Internal Parts
and/or by Upgrading to SIR®（Switching Integrated Rectifier）……Toru Wada
48 Implementing the Process Optimization Control System（Advanced Model
Predictive Control）for the Recovery Boiler……Mitsuhiko Chiura
52 Let’s Go Further than Visualization of Product CO2―Introduction of Efforts to Reduce CO2 Emissions―……Tadahiro Yamada

56 The Improvement of Work Efficiency in Containerboard Warehouse by Using
DX and Automatic Devices……Masahiro Shishido
03
62
63

Committee report
Coffee break
Papyrus

68
72
80
81
83

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 July JAPAN TAPPI JOURNAL
Vol.77, No.7 Abstracts

Case Study of Energy Saving at PM6 after Conversion
Tomoyuki Fujimoto
No.4 Production Department, Niigata Mill, Hokuetsu Corporation
PM6 of Niigata Mill, started operation in 1986 as the first on-line coater machine in Japan,
finished its role and it was shut down in 2019 in order to restructure production capacity ofcoated printing paper. After conversion, PM6 restarted commercial operation in March 2020as the first corrugating medium paper machine in Niigata Prefecture.
This conversion is a rebuilt from an on-line coater machine to a corrugating medium paper
machine for corrugated board, and since the suitability of the production line different due
to a difference in product properties, efficient utilization of equipment is an issue. In
particular, there is a lot of room for improvement in terms of energy efficiency, and several
improvements have been planned for the purpose of energy saving after conversion. In thisarticle, bypassing of the double disc refiner and drive load reduction at wire section arereported.

Energy saving by updating the instrument air supply system
Akira Hayashi
Kushiro Mill, Oji Materia Co,Ltd
In Kushiro Mill, instrument air was supplied from three compressors via two
dehumidifiers.
Production of the main aircraft, the #8 turbo compressor, was discontinued in 2003 andparts supply was discontinued at the end of March 2014, and spare parts arranged before
the discontinuation of parts supply were used and depleted due to subsequent repairs,
making it difficult to maintain the equipment.
In addition, consumption rate of instrument air in our mill was inferior to other mills in ourcompany, and we started activities to improve it from 2018. After we determined the amountof instrument air supply required for our mill, we updated the instrument air supply system
in 2021 in conjunction with the renewal of aging equipment.

Steam System Optimization and Case Studies in the Paper Industry for Carbon Neutrality
Suguru Onda
TLV CO., LTD.
Steam System Optimization Program (SSOP®) is a sustainable asset management
program that continuously optimizes the performance of the entire steam systemthrough visualization. SSOP® consists of optimizing all condensate discharge
locations (Best Practice of Steam Trap Management, BPSTM®) and optimizing all
steam applications and the entire steam system (CES® Survey).
CES® Survey identifies the potential from reducing the overall plant energy
consumption, analyzes the balance between steam and electricity using Steam System
Balance Simulator which is developed by TLV, proposes the potential improvement
for each opportunity, and identifies risks in the steam system. Optimization throughthe CES® Survey progresses in the following four steps. 1st: consultation and on-site
survey, 2nd: identifying and tailoring the potential solutions, 3rd: engineering anddesign, 4th: confirmation of the improvement effect. This survey puts importance on
the investment profitability of each opportunity. On average, 69% of the opportunities
proposed have a payback period of less than two years.
5 example proposals made for paper industry plants are shown in this paper. The
first example is the reduction of vented steam from the deaerator. The vent valve issometimes not adjusted according to the steam production rate. If the vented steam
flow is larger than the appropriate amount, adjusting the valve can reduce energy loss
without requiring any investment costs.
The second example is for flash steam recovery from a boiler blow-down. Boilers in
the paper industry generate a lot of high pressure steam. This means that there is ahuge heat loss if blow-down water is not utilized. In this example, the solution was aflash vessel to recover flash steam from blow-down water as low pressure steam.
The third example is for flash steam recovery from a digester which uses a lot ofhigh pressure steam. The steam condensate is usually recovered to the boiler, however
flash steam is not utilized. In this example, flash steam is recovered to heat waterusing a heat exchanger that is open to the atmosphere. Using this specific heatexchanger, no additional back pressure is exerted on the digester. This is an important
point when designing heat recovery systems.
The fourth example optimizes heat recovery in the drainage system of a paper
machine. There are significant heat losses in the condenser due to the flash steam
amount exceeding the demand. This example proposes using an ejector to recoveradditional flash steam and reduce heat loss to the cooling water.
The last example is the self-circulating system for a Yankee dryer. A Yankee dryer
is one of the steam applications where condensate can be difficult to be discharged.
The user had opened the bypass valve of the steam trap to discharge condensate,
resulting in steam losses. In this example, the introduction of the self-circulating
system has allowed the user to keep the bypass valve closed during production.

Company-wide steam traps upgrade for energy saving
Hideharu Yoshimura
Technical & Engineering Div. Nippon Paper Industries Co., Ltd
This report explains that we implement the system that periodically upgrades the failure
steam traps to new optimized ones during maintenance as per mill. The system works tomaintain discharging condensate under optimal conditions for our mills. Throughout the year,
the system also contributes steam saving at a maximum although the energy loss of one
steam trap have an insignificant impact because our mills have hundreds of steam traps.

Energy-saving and CO2 reduction by means of fuel conversion and other measures
Tatsuya Bandou
Komatsushima Plant， LINTEC Corporation
Measures for addressing the climate change have been attracting increasing attention in a global
manner, Japanese government has declared to realize “Carbon Neutrality by 2050”. In addition, a newpolicy was announced to set a new greenhouse gas reduction target for FY2030, aiming to reducegreenhouse gas emissions by forty six percent from FY2013 levels while continuing strong efforts in its
challenge to meet the aggressive goal of cutting its emission by fifty percent. Since our company routinely
emits greenhouse gas, it considers it is one of the most significant issues and is implementing
countermeasures to fulfill our social responsibility.
This paper describes some facilities for energy-saving and CO2 reduction by means of fuel conversion
and other methods at Komatsushima plant, LINTEC Corporation.

Energy savings through the renewal of the gas turbine cogeneration system
Hironori Nishiura
Otsu Paperboard Co.,Ltd.
Otsu Paperboard Co., Ltd., located on the shores of Lake Biwa in Otsu City, southern Shiga Prefecture,has placed the highest priority on efforts for environmental protection and has been manufacturing andselling environmentally friendly paperboard (base paper for corrugated cardboard) since commencing
operation in 1955. In January 2004, the company switched its fuel from heavy fuel oil C to city gas andstarted to operate a GTCC system (gas turbine combined cycle, total power output 12,910 kW), where
the gas turbine cogeneration was newly incorporated into the existing BTG system (power generation
boiler and steam turbine). However, as a result of the significant reduction of electricity and steam
consumption on premises due to continuous energy saving activities, overall energy efficiency decreased
and the aging GTCC system needed renewal. Against this backdrop, we achieved 4.2% energy savingsand 6.0% reduction in CO2 emissions by upgrading the facilities to the optimal system suited for thecurrent situation. This paper will discuss how we upgraded our facilities and show some examples ofenergy savings and CO2 reduction.

Energy saving and work environment improvement by heat shield material "Top Heat Barrier"
Teruyuki Fukushima
NIHONSHANETSU
Heat shielding materials can be used in all kinds of industries and construction sites (roofs, walls,
floors, equipment, cars, pets, tanks, tents, refrigeration, freezers, helmets), which are energy-saving
materials with infinite possibilities. Although there are ups and downs depending on the surrounding
environment and conditions, energy savings of about 30% can be expected.

Development of Ammonia combustion technology development for coal fired power station
Shinji Masaki
IHI Corporation
Toward zero carbon dioxide emissions by 2050, IHI aims to realize a decarbonized recycling-oriented
society and a comfortable, secure, autonomous and distributed community. On the other hand, forammonia, we are working to build an ammonia supply chain by participating not only in the ammonia
utilization technology introduced this time, but also in the production side business.

Low-carbon and Decarbonization Approaches for Thermal energy-Importance of decarbonizing across the continuum from low-carbon measures in the transition periodHiroshi Yoshida
Sales & Service Sect. Industrial Energy Sales & Service DeptTOKYO GAS Co., Ltd.
The wave of carbon neutrality that originated in Europe has been rapidly expanding on a global
scale since 2019, and the realization of a carbon neutral society by 2050 is a common challenge forall humankind. In Japan, after the declaration of carbon neutrality in November 2020, companies
are rapidly striving to become carbon neutral.
While the use of renewable energy sources is expanding to green electricity, heat demandaccounts for 60% of Japan's energy consumption in the consumer and industrial sectors, so
decarbonizing heat energy will be a key issue for achieving carbon neutrality in 2050. The key todecarbonizing thermal energy is "green hydrogen. In order to implement and expand the use ofgreen hydrogen in society, it is essential to balance it with economic efficiency, and we believe thatthe use of "e-methane" is an effective way to achieve this.
The following is the latest status of various activities aimed at realizing the decarbonization ofthermal energy through the large-scale social implementation of "e-methane".

Performance Improvement for an ESP, by Replacing T/R sets, Internal Parts and/or by Upgrading to SIR®
(Switching Integrated Rectifier)Toru Wada
Environmental Control Solutions Group, Andritz K.K.
Electrostatic Precipitators (ESPs) for Soda Recovery Boilers often experience difficult process andaged parts conditions from their years of service, resulting in high dust emissions. Depending on theroot cause, ESP performance can be improved by upgrading the mechanical and electrical ESP
equipment. This paper will discuss various solutions to improve aged ESP performance;- ESP Internal parts- T/R set and EPIC controller- SIR® (Switching Integrated Rectifier)Implementing the process optimization control system (advanced Model Predictive Control) for the recovery
boilerMitsuhiko Chiura
MPM OPERATION Co.，Ltd.
Power generation facilities at Hachinohe plant of Mitsubishi Paper Mills Limited consist of a coalfired boiler, a waste boiler，black liquor recovery boilers and steam turbines. These facilities are being
operated to supply energy to manufacturing processes both the steam and power demands fully while
using many fuel sources such as heavy oil, coal, black liquor and waste efficiently.
Recently, we introduce the implementing the process optimization control system(advanced Model
Predictive Control) for the recovery boiler. The system has solved some operating problems andreduced power generation costs.
Let's Go Further than Visualization of Product CO２.
-Introduction of Efforts to Reduce CO２ EmissionsTadahiro Yamada
Solution Business Division Consulting Center Consulting Dept.2, Yokogawa Solution Service Corporation.＊２
This paper describes the global situation toward achieving carbon neutrality and its impact on Japan,
and introduces the importance of working to reduce CO２ emissions.
YOKOGAWA's efforts, including case studies, will be proposed to address the issue of the lack ofutilization of "visualization" systems that have been introduced.

The Improvement of work efficiency in containerboard warehouse by using DX and automatic devices
Masahiro Shishido
Paperboard Engineering Development Group, Rengo Co., Ltd.
The Rengo Yodogawa Logistics Center, which started operation in September 2021, introduced a truck
management system and picking application developed in-house, the Japan’s first laser-guided
automatic clamp lift, and an RFID system.
The truck management system is effective for sharing information and improving work efficiency forlogistics personnel, and the picking application is effective for pre-loading at the Yodogawa Distribution
Center. The average staying time of trucks at the Yodogawa Distribution Center is less than 30 minutes,
which greatly contributes to reducing the waiting time of truck drivers.
The RFID system enables automatic reading at the time of warehousing in the automated warehouseand at the time of shipping from the Logistics Center, and the latter leads to a reduction in the incidental
work of the truck drivers and safety measures. RFID initiatives will be used in downstream corrugatedcardboard factories in the future, and have already contributed to the reduction of receiving time using
one factory as a model, and it is expected that they will be expanded to other factories and the entry ofother companies.

JAPAN TAPPI JOURNALCONTENTS

8

August 2023

Vol. 77, No. 8

Pulp
1 Report on 28th Pulping Seminar……Pulp Technical Committee, JAPAN TAPPI
4 Life Cycle Assessment（LCA）Basic Method and Recent Trends……Atsushi Inaba
12
17

Methods for Evaluating the Morphology of Cellulose Fibers at Each Size

―From Pulp Fiber to Nanofiber―……Ryota Kose

Pulp Mill without Fossil Fuel

―Carbon free Lime Kiln―……Keisuke Tanaka

21 Basics and Applications Cases of Model Predictive Control in Kraft Pulp Processes……Nozomu Wada

26 Kraft Pulp Process Inspection Service by Andritz……Ryo Yoshida and Kanji Hagiwara
31

PulpEye Pulp Analyzer Delivers Mill Cost Savings and Process Performance
Improvements―On-line Fiber Properties and Real Time Data Transformation Enabling Process
Performance and Product Quality Improvements―……Katsuhiko Yokoyama

38

Valmet Cooking Process for Low Bulk Density Chips and Energy Savings in the
Cooking Process……Yoshiro Nishihara
43 Pitch Control Agent for the Kraft Pulping Process……Takuji Sodeyama
48 Current Situation and Future Prospects of Paper Recycling in Japan……Shogo Hamano
54

The Latest Detrashing Technology with Intensa Series……Satoshi Orido

60

Advanced Technology of Handling Recycle Papers with Wet-strength……Jiro Urata

65 Initiatives for Carbon Neutral Society in the Use of Ammonia……Kazuhiro Watanabe
70

Development and Evaluation of Cooking Accelerators That Contribute to
Building a Carbon-Neutral Industry―Collaboration with the RISE Research Institutes of Sweden AB.―……Takashi Tanaka,Toshio Yamada, Mayumi Yasumoto, Lars Sundvall, Mats Westin and Robin Westin
Topics & Information

78
82

The Operating Experience of Kneader……Yoshihiro Uotani
Realtime Prediction Model with using Single Point Morphology SPM-5500―One of the hottest topics in P&P Industry=Visualization of Fiber Morphology―……Ryohei Watanabe, Hiromasa Matsuno, Nozomu Wada and Kukjin Yoon

Introduction of Research Laboratories（152）90

School of Agriculture, Utsunomiya University
Department of Forest Science, Forest Products Laboratory
Graduate School of Regional Development and Creativity, Division of Engineeringand Agriculture, Graduate Program in Agricultural Biological ChemistryTokyo University of Agriculture and Technology, United Graduate School of
Agricultural Science, Department of Symbiotic Science of Environment andNatural Resources, Major Chair of Science of Forest Resources and Ecomaterials

03
89
92

Committee report
Essay on Intellectual Property
Coffee break

93
98
105
106
108

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 August JAPAN TAPPI JOURNAL
Vol.77, No.8 Abstracts

Life Cycle Assessment (LCA) Basic Method and Recent Trends
Atsushi Inaba
President, Japan Life Cycle Assessment Facilitation Centre（LCAF)
Recently, the calculation of greenhouse gas (GHG) emissions of products and organizations using
life cycle assessment (LCA) has paid attention in the direction to realize "carbon neutrality”. The
International Standards (ISO) for LCA of products (ISO 14040:2006 and ISO 14044:2006) are themethod to assess diverse environmental impacts of products, but it has been refined with the
publication of the ISO Carbon Footprint (CFP) (ISO 14067:2018), which assesses only the impacts of
GHG emissions. In addition, there are ISOs for LCA and CFP for companies and other organizations.
Furthermore, Scope 3 standard published by the GHG Protocol is used by many companies as a
calculation method for CFP of organizations. This paper explains the basic method of LCA presented in
ISO14040:2006 and ISO14044:2006 and the differences between these ISOs and ISO14067:2007 for
CFP and other methods including Scope 3 standards for organizations.

Methods for evaluating the morphology of cellulose fibers at each size
-From pulp fiber to nanofiberRyota Kose
Division of Natural Resources and Ecomaterials, Institute of Agriculture,
Tokyo University of Agriculture and Technology
The pulp & paper industry can produce fibers of various sizes and morphologies, ranging from pulp
fiber to CNF. The effective utilization of all those cellulose fibers is an important issue for the pulp &paper industry, both economically and environmentally. Pulp fibers are hollow fibers with a wall
structure. This wall structure is a laminated sheet structure consisting of oriented cellulose microfibrilswith a width of about 3 nm. The process of refining pulp fibers to CNFs complicates the fiber morphology
and improves the aggregation of the fibers. As a result, while pulp fibers can be recognized as a "single
fiber" with both ends clearly observable, it is difficult to recognize fine fibers as a "single fiber”. When
there are fibers with different widths at a multiscale, not all fibers are captured in the image observedwith a microscope at a constant magnification. At low magnification, pulp fibers can be observed, but not
CNF. Conversely, at high magnification, CNFs can be observed, but the entire outline of the pulp fiber
cannot be observed. To evaluate fiber morphology for such fiber groups, there are approaches to narrow
down the evaluation target to only pulp fibers or CNFs, and or extract averaged information on themorphology and size of fiber groups by optical methods, etc.

Pulp mill without fossil fuel-Carbon free Lime kilnKeisuke Tanaka
Energy Group
Pulp & Energy Technology, Valmet KK
The pulp and paper industry in Japan have been working to reduce the use of the fossil fuel, however the Lime kiln
still uses fuel oil to calcinate the lime mud. The overall kraft pulping process is explained in the beginning of thispaper, specially how the lime kiln is involved.
Then two of most commonly used, technology to replace fossil fuel with biomass based heat sources for lime kiln at
production level in recent days are introduced.
First technology is the wood power incineration which takes relatively clean wood, dry and grind them to control
burning speed and efficacy, and inject to the kiln through burner in the form of powder. The second technology is the
CFB gasification technology, which takes biomass, and partially burn them using less than theoretical amount of oxygenin the fluidized bed reactor to create combustible gas and at the same time, remove contamination along with ash.

Basics and Applications Cases of Model Predictive Control in Kraft Pulp Processes
Nozomu Wada
Voith Turbo Co., Ltd. BTG Japan, Process Solutions
Since later of 2010s, we are now going on a rapid growing stream of development of Factory
automations as beyond of the last generation's digitalization. In this generation, the automation
system can utilize big data with high frequent scanning and calculations which includes tons of
information, such like process values, quality check results, production stocks, production plan, PID
loop status and so on.
Voith’s OnEfficiency solutions (BTG's MACS solutions has been integrated into it and renamed as
OnEfficiency.pulp) provides predictive control based on the prediction models which considers muchcomplicated multiple cross-correlations between each unit operations in Kraft Pulp Processes which
can provided by the above background technologies.
In this paper, the basics of Model Predictive Control (MPC/APC) and application cases are
introduced as which may be useful at pulp mill's pre-considering for implementation.

Kraft Pulp Process Inspection Service by Andritz
Ryo Yoshida
Capital Sales Group, Andritz K.K.
Kanji Hagiwara
Engineering department, Andritz K.K.
The pandemic of COVID-19 and Russian aggression in Ukraine have caused the cost of imported
raw materials, energy, and transportation to skyrocket in a short period of time. In addition, as in thepast, extreme weather conditions continue to occur every year, and even under these circumstances,
there is still a strong demand for CO2 emission reductions, and measures to reduce CO2 emissions andactions against increasing energy costs at paper mills have become inevitable.
These factors will require a major change in the way kraft pulp mills have been thinking about
operating cost management.
The kraft pulp process is an important one that produces the main energy for the mill, but it is also a
process that consumes large amounts of energy, raw materials, and utilities. It is time to review theoperation of this process from a different perspective, and to consider and implement measures toreduce costs.
Therefore, Andritz has started a service in Japan to study cost reductions, operational
improvements, and CO2 emission reductions by surveying the problems and cost reduction potential in
the mills.
In this presentation, we will introduce overseas investment trends and explain our current kraft pulp
process survey service.

PulpEye Pulp Analyzer Delivers Mill Cost Savings and Process Performance Improvements-On-line fiber properties and real time data transformation enabling process performance and product quality
improvementsKatsuhiko Yokoyama
MATSUBO Corporation, Group 2 Industrial Machinery Dept.3
The state of the art for in-line real time fiber properties measurement and analysis is the PulpEyeTM which,coupled with Pulp on Target, delivers real time fiber and pulp quality information which can be used toconfirm the stability of products or, if deviations are detected, for process troubleshooting. This article will
introduce the PulpEyeTM, the novel modules which deliver unique fiber quality distribution data and how
significant process improvements and costs savings can be achieved through the use of multivariate
statistical software ExtractEyeTM.

Valmet cooking process for low bulk density chips and Energy savings in the cooking process
Yoshiro Nishihara
Pulp & Energy, Services business Line, Valmet K.K.
In recent years, the increase of mega-sized pulp mills and changes in chip quality have become
increasingly evident. When using conventional cooking processes, it is difficult to maintain stable
operation and cooking yield due to insufficient chip pre-treatment and the deteriorating environment
in the mill.
Moreover, in the industrial sector, including the pulp and paper industry, energy saving andreduction of CO2 emissions, including conversion to renewable fuel from fossil fuels, are the mostsignificant challenges for sustainable development in the future. In the pulp and paper industry inJapan, energy saving of pulp and paper mills is explored to meet the 2030 CO2 emissions reduction
target.
The introduction of the Valmet Continuous Cooking™ with Valmet ImpBin™ - atmospheric pressure
impregnation vessel- and the conversion of an existing 1-vessel digester to a Valmet OptiCook™ are
typical examples of energy saving in pulp mills. The low temperature and adequate retention time of
impregnation allows for low reject and high yield in cooking, while the stability of the chip column
provides excellent operational stability. In addition, the low reject rate by good impregnation is very
suitable for production of pulps with high kappa number.
Both modifications will also contribute to energy savings. Improvements in chip pre-treatment andimpregnation are expected to save steam, and improvements in the cooking process are expected toreduce the amount of chemicals used in the following fiber line.
Pitch Control Agent for the Kraft Pulping Process
Takuji Sodeyama
Paper Chemicals Development, R&D Center, R&D Company, Harima Chemicals, Inc.
Pitch reduces the productivity of the Kraft pulping process by lowering pulp quality and shortening
equipment lifespan. The pitch in the process exists as colloids that mainly consist of wood-derived resin
acids. It becomes unstable and builds up deposits when the concentration of resins in the systemincreases or the water pH decreases. A conventional and primary strategy to prevent pitch problems is
to improve the pulp washing process with equipment and adding talc to deactivate pitch, but thesemethods are not always sufficient to prevent the problems. In such cases, adding a pitch control agent to
the pitch controlling system is an effective solution to eliminate residual pitch.
We have developed a pitch control agent, the "AS series", which disperses pitch as stable fine particles
and retains them on the fiber surface without any adverse effects on pulp qualities. The pitch is stabilized
by the AS series and discharged from the Kraft pulping process with the pulp.
This paper describes pitch problems in the Kraft pulping process and paper manufacturing process, aswell as solutions using pitch control agents, including the AS series.

Current Situation and Future Prospects of Paper Recycling in Japan
Shogo Hamano
Paper Recycling Promotion Center
Demand for paper and paperboard fell sharply in 2020 because of the temporary closure andremote working as well as a decline in inbound tourists as a result of the spread of Covid-19. It showeda slight recovery in 2021 and 2022 as economic activity picked up.
Amid these demand trends, a look at recovered paper collection by type shows that the volume ofold corrugated containers collected decreased slightly in 2022. Nevertheless, since the production andconsumption of containerboard are steady, the recovery is expected to be slight increase or flat for sometime to come.
The volume of old newspapers collected has been declining year by year due to the digitization ofnewspapers and a decrease in inserts and so on. Under Covid-19 pandemic the issuance of inserts
further decreases, then the amount of old newspapers collection is likely to continue to decline. Paper
manufacturers' procurement of old newspapers will become more difficult, and they may need toconsider alternative raw materials in the future.
The volume of old magazines collected is decreasing due to the digitization of magazines, but the
decline is slower than that of old newspapers because of the progress in the collection of Sorted
residential old paper and paperboard. However, if the collection of those papers is promoted, the qualityof old magazines will further deteriorate. Therefore, paper mills that use old magazines in the future
will need to consider adapting their facilities.

The latest detrashing technology with Intensa series
Satoshi Orido
Voith IHI Paper Technology Co., Ltd.
For the detrashing system of pulping stage, more effective machine is required because thecontaminants ratio of raw material is getting increase recently. The IntensaMaXX andIntensaScreenDrum is the detrashing machine which fulfills the request for better detrashing operation.
The IntensaMaxx is rotor and screen plate are located at the top of the tank, and this layout prevents
wearing and jamming by heavy contaminants. The rotor axis is located as eccentric against the center
axis of the vat. This layout prevents strong centrifugal flow and also growth of long contaminants. The
piping layout is also considered for the better reject removal. The IntensaScreenDrum is equipped withpowerful cleaning power and rotation speed control by INV. By controlling the INV, it is possible to set
the cleaning and dehydration performance as desired. The introduction of the latest detrash enables
more efficient and stable operation, and it is possible to aim for optimal power consumption and wear
rate.

Advanced Technology of Handling Recycle Papers with Wet-strength
Jiro Urata
AIKAWA Iron Works Co., Ltd.
The pulp & paper industry has been developing an optimization of all equipment that meets arequirement of an environmental preservation such as decreasing waste and saving energy.
On the other hand, we are now facing a problem that it is getting more and more difficult to procure
recycle papers in good quality in the Japanese market, due to the influence on an increasing recycle
paper export to China and other Asian countries. It is therefore predicted that we must use low quality
recycle papers as a raw material for paper making processes. We then need to optimize the equipment
in order to consistently maintain the paper making operations, while keeping the paper quality eventhe low quality recycle papers are used. This article introduces examples of the cases that focus on
pulper & detrash process using the recycle papers with a lot of contaminants.

Initiatives for Carbon Neutral Society in the use of Ammonia
Kazuhiro Watanabe
IHI Corporation.
Thermal power generation has ability to adjust the fluctuations in the output of solar and wind
power, as well as the inertial force that can mitigate frequency fluctuations in the event of a sudden
power outage and plays an important role in expanding renewable energy. On the other hand, most of
the fuels used in thermal power generation are fossil fuels such as coal, petroleum, and natural gas,
and their combustion accompanies CO2 emissions. Therefore, it is necessary to promote conversion tocarbon-free fuels that do not emit CO2 toward zero CO2 emissions in thermal power generation. One ofthe promising ones is ammonia. It is easy to liquefy, has a higher hydrogen density per volume, which
are superior characteristics in terms of transport and storage compared to other energy carriers.
This presentation introduces the development trends of ammonia utilization technology in coal fired
boilers and gas turbines. In coal fired boilers, we have developed 20% ammonia co-firing burners thatcan reduce NOx emission and unburned carbon to the same level as 100% coal firing. In gas turbines,
we have developed combustors focused on stable combustion of liquid ammonia and reducing
emissions that can reduce GHG emissions by more than 99%.

Development and evaluation of cooking accelerators that contribute tobuilding a carbon-neutral industry- Collaboration with the RISE Research Institutes of Sweden AB. Takashi Tanaka, Toshio Yamada and Mayumi Yasumoto
Product Development Department
Institute of Surface Science and Technology, Chemicals Unit
Nicca Chemical Co.,Ltd
Lars Sundvall, Mats Westin and Robin Westin
RISE Research Institutes of Sweden AB.
As indicated by the Japanese government's 2050 Carbon Neutral Declaration, efforts to achieve a
decarbonized society are becoming an increasingly important issue. Using forest resources is one of theeffective means to realize a sustainable carbon-neutral society.
As a method for producing pulp from lignocellulose materials of plants such as wood, digestion usingalkali or sulfite is generally used. After the lignin component is mainly decomposed by this cooking
treatment, the lignin is removed by filtration and washing to produce pulp.
Although natural resources such as timber are recyclable, excessive deforestation is regulated from thepoint of view of environment and ecosystem preservation, and the price of timber is increasing. Therefore,
in the production of pulp, for example, it is becoming important to increase the amount of pulp produced
per unit of raw wood and to produce high-quality pulp products.
As a method to solve these problems, there is a method of using cooking aids (accelerators) for the
purpose of increasing the efficiency of cooking and improving the yield of pulp per unit of raw wood.
Furthermore, in recent years, there has been a demand for safer digestion accelerators.
This time, we explored various compounds, repeated laboratory evaluations, and developed a newdigestion accelerator. However, in order to grasp the cooking capacity more accurately, we thought thatan evaluation that reproduced the industrial process was necessary.
Under these circumstances, we contacted the RISE Research Institutes of Sweden AB.
(RISE) and conducted an evaluation of a new digestion accelerator. As a result, it wasobserved that the pulp yield tended to improve compared to the case where the was not used. Evaluation is
ongoing. At the same time, we visited RISE in June 2022, witnessed the laboratory evaluation, and observed
the equipment and methods, etc., and found that the RISE cooking evaluation method was more reasonable.
In this presentation, we will explain the theoretical concept of the digestion accelerator developed by ourcompany, and the method and results of the digestion test conducted at RISE.

The operating experience of kneader
Yoshihiro Uotani
Amagasaki Mill production section, Rengo.,co.ltd
After the operation of the kneader facility, many advantages such as increased processing volume of
the raw material process, improvement of raw material yield, and stable operation of the paper machine
have been obtained. In particular, since the kneader equipment, which is usually used for the purpose ofdispersing raw materials, processes the final reject raw material containing a large amount of adhesive
foreign matter, there were some unexpected problems immediately after introduction, but now
improvements have been made and resolved.
Realtime Prediction Model with using Single Point Morphology SPM-5500- One of the hottest topics in P&P Industry = Visualization of Fiber Morphology Ryohei Watanabe, Hiromasa Matsuno, Nozomu Wada, and Kukjin Yoon
Voith Turbo Co., Ltd. BTG Japan
Paper such as tissue, corrugated board, packaging paper, and graphic paper is an indispensable isnecessity in the contemporary society, and at the same time, supports our daily lives, industries, andcultures. Graphic paper demand has been shrinking due to the IT development but on the other hand
the Pulp & Paper Industry, who successfully circulates forests, energy, carbon emission, and products,
has been recently reevaluated as an excellent resource-recycling industry in the world where SDGs isemphasized. The Plastic-Free is one of the major examples.
In Japan, the recovery rate of recycle paper is over 80% and utilization rate of the recycle paper isnearly 70%. This shows that the Japanese Pulp & Paper Industry is one of the top leading countries
for the resource-recycling industry in the world.
Alternatively, by the influence of the expansion of the remote work related to the Coid-19, thecurtailment of the graphic paper mainly made from the wood pulp has been further proceeded, and thishas brought the situation that it become noticeably more difficult to get the high-quality recycle paper.
And many paper mills have been trying to use the cheaper chips, that are generally hard to get the good
paper strength. These factors have been the bottle neck for achieving the stable quality and operation
at site.
The pulp fiber accounts for more than 80% of the paper body and about half of the paper production
cost. The pulp fiber varies in the length, width, and fibrillation depending on the chip species, cooking
way, and times of recycling.
The fiber Morphology is closely related to the paper quality, for example, softness on tissue, strength
on corrugated board & packaging paper, printing quality on graphic paper. The freeness measurement
has been applied in the paper manufacturing process as the way of knowing the fiber morphology for
years.
The freeness measurement has been one of the good tool to control the important paper quality. But
the production side has considered that there is limitation to correctly know the fiber morphology by only
the fiber dewatering characteristics.
This article introduces SPM-5550, that is an In-line Fiber Morphology Analyzer, and reference of realtime prediction model for the important paper quality. This is the hottest “Visualization”and “Solution”inPulp & Paper Industry provided by BTG who has struggled with customer’s critical success factors.
Our slogan is “Knowing Your Fiber. Would you please join us to solve your issue by the solution
provided by the leading-edge company in this industry?

JAPAN TAPPI JOURNALCONTENTS

9

September 2023

Vol. 77, No. 9

Papermaking Technology Ⅰ
1 Report of the 27th Papermaking Technology Seminar……Papermaking Technology Committee, JAPAN TAPPI

4 History of Coating Technology and Latest Trends……Masahiro Nagahara
13

Transition and Latest Trend of Tape Turn-Up System―RCS/IBS Reel Changing System―……Atsushi Kudoh

17

The Synthetic Rubber Cover for Applicator Roll……Jun Furuya

22

Basic and Latest Technologies for Calender and Reel……Toshihiro Katano

Topics & Information

29

Operating Experience of Fibre Solve FSV（U）C pulper for Wet Strength Paper
Machine Broke Handling……Masafumi Sone

34

Foreign Matter Removal Technology in the Papermaking Process Using Lowgrade Recycled Paper……Tsuyoshi Yoshino
The SmartPapyrus Realizes Work Style Reform in Paper Mills（Part 1）

39
44―SmartPapyrus® 1.0 System That Classifies Defects by Origin―……Takayuki Shimo

The SmartPapyrus Realizes Work Style Reform in Paper Mills（Part 2）―SmartPapyrus® 2.0 That Analyzes and Predicts the Occurrence of Defects―……Hitomaru Sakata

52

76th JAPAN TAPPI General Meeting

03
51
69

Committee report
Coffee break
Papyrus

74
78
86
87
89

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 September JAPAN TAPPI JOURNAL
Vol.77, No.9 Abstracts

History of Coating Technology and Latest Trends
Masahiro Nagahara
Paper Sales, Valmet K.K.
In this paper, three main topics are described as technology and history of coating and air dryer. The
first is the technical development of size press. Pond size, roll metering, application head size press,
spray sizer and the latest Hard nip sizer are described. The technical development of some important
coater heads is described secondly. Roll application, short dwell application, jet application blade coaterand curtain coater are explained. The third is an update of an air nozzle of air dryer. This greatly
contributes to improvement of drying capacity and energy saving. The screen and the deaerator which
are the important device of sizing and coating supply system are introduced at the end.

Transition and Latest Trend of Tape Turn-Up System-RCS / IBS Reel Changing SystemAtsushi Kudoh
IBS Japan Ltd.
IBS Paper Performance Group introduced the first Tape Turn-up system (hereinafter – “RCS”) to
paper market in 1986 and has delivered over 1,700 units in world-wide. In Japanese market, the first
RCS1000 was introduced in 1999, and since then 82 units have been delivered and been operating.
From the first-generation RCS1000, the second-generation RCS2000 to the third-generation RCS5000
and RCS3001-T, we supply consistent in-house productions except for some Automation products. We
also provide in-house developed and manufactured paper tapes used for Turn-up. In addition, we
provide our own regular maintenance service in view point of stable operation. This is because theturn-up system is in an important position to complete the papermaking process and is required tooperate stably and accurately 24 hours a day.

The Synthetic Rubber Cover for Applicator Roll
Jun Furuya
Seibu Polymer Corporation
In recent years, the chemicals used for coating have become more diversified, and the rod metering
size press, which supports faster machine speeds and space-saving, has become widespread. The
environment in which applicator rolls are used is becoming more severe.
Polyurethane, which has high strength and excellent abrasion resistance, is often used for the coating
material of the applicator roll. It is necessary to replace the roll every several tens of days, which iscomplicated in terms of management.
For the purpose of preventing swelling and peeling due to blistering of the applicator roll, we havedeveloped synthetic rubber materials "Super Tempex SP" and "RPD-164" with excellent water andchemical resistance. In contrast to urethane rubber, which is highly hydrophilic and easily absorbs
water, synthetic rubber can be made more water resistant by optimizing the grade of raw rubber andcompounding agents.
A temperature difference was applied between the inside and outside of the roll, and an accelerated
blister peeling test was carried out. While the urethane rubber peeled off in 4 days, the synthetic
rubber could withstand 160 days.

Basic and latest technologies for calender and reelToshihiro Katano
Technical Sales Dept., Voith IHI Paper Technology Co., Ltd
In the papermaking process, the surface of the paper after leaving the dryer part is rough and thestructure is soft. Calendering applies pressure to the paper to densify the structure and smooth thesurface to a specified thickness. Calendered paper is wound onto a roll shape by a reel for processing in
the next process. In this process, the paper is required not only to have the required thickness, but also
to have the required gloss and smoothness, and must be rolled up delicately so as not to spoil the gloss
and smoothness. On the other hand, the demands of the times, such as increased productivity anddifferentiation from competing products, as well as technological advances, have led to the fusion andfurther subdivision of processes. As with other paper making process equipment, calenders and reels
have also developed unique technologies to meet the specific requirements of each product type. Thisseminar reports the technological evolution of calenders and reels up to the present day, as well as thelatest technologies.
In recent years, we have been focusing on machine inspection. Maintaining good condition maintains
quality, which in turn leads to cost reductions. We will also discuss our efforts and actual cases.

Operating Experience of Fibre Solve FSV(U)C pulper for wet strength paper machine broke handlingMasafumi Sone
Fuji Mill,Oji Materia Co.,Ltd.
Fuji Mill has two paper machines, one is N-1 and the other is N-2: N-1 produces all grades ofcorrugating medium from the general grade to water-resistant corrugating medium and N-2 is one of
the largest paper machine in Japan and produces the white paperboard with excellent conversion
suitability and printing effects, while the intermediate warehouse located in the back-end process area
enables a quick delivery to the customers. The company installed a biomass boiler in 2015 and is
working to reduce its environmental impact through the effective use of renewable energy and further
use of recycled resources and also made a committment to resource conservation and environmental
protection. This paper introduces a case in which a machine pulper delivered by ANDRITZ wasintroduced to establish a stable operation of the broke treatment process during the new production ofhard-to-pulping paper on the N-2.

Foreign matter removal technology in the papermaking process using low-grade recycled paper
Tsuyoshi Yoshino
Design Department / AIKAWA IRON WORKS CO.,LTD.
In recent years, the used paper utilization rate has been around 64％, and while the SDGs are being
called for, the goal of achieving a used paper utilization rate of 65％ by 2025 has been set. We believethat the use of used paper will continue to increase. However, while the amount of used paper
generated is decreasing due to the COVID-19 pandemic and the quality of used paper is also
decreasing, the number of sticky foreign substances such as pitches increases and adheres to fabrics,
causing poor water extraction, paper break and reduces productivity. Is increasing. At the same time,
improvement of product quality is also required, and the situation where difficult problems must be
tackled is increasing. In order to improve productivity and quality even under such circumstances, wewill introduce measures to remove foreign substances in the papermaking process while using lowgrade recycled paper.

The Smart Papyrus realizes work style reform in paper mills. (Part 1)-SmartPapyrus® 1.0 system that classifies defects by originTakayuki Shimo
Technology Development Team, MAINTECH CO., LTD Fuji Technology Development Center
Maintech has been providing paper machines with Dryer Section Passivation technology (chemical
application combined with chemical product, equipment, and application methods) for over 30 years toprevent defect/sheet break due to dryer section depositions. As of July 2022, the number of applications
being operated over the world has topped 800 units. In recent years, the number of problems caused bymachine deposits has been increasing due to the worsening of the raw material of pulp situation. In
addition, it is becoming increasingly difficult to respond to machine dirt deposits in a timely andappropriate manner due to the decrease in the working population at production sites and theretirement of experienced employees. To address this issue, we are developing "SmartPapyrus🄬", asystem to prevent defects and sheet breaks by visualizing machine dirt deposits using IoT, analyzing it
using artificial intelligence, and using machine dirt deposit prevention technology. For this reason, wedeveloped SmartPapyrus🄬 1.0, a system that uses AI to automatically classify images of defects.
SmartPapyrus🄬 1.0 makes it possible to determine in real-time when and how many defects haveoccurred.
As a result, the necessity and effectiveness of countermeasures can be quantitatively confirmed.
In this report, we will introduce SmartPapyrus🄬 1.0 and discuss some examples of its use.

The SmartPapyrus Realizes Work Style Reform in Paper Mills. (Part 2)-Smart Papyrus® 2.0 that analyzes and predicts the occurrence of defectsHitomaru Sakata
Technology Development TeamMAINTECH CO., LTD Fuji Technology Development Center
In recent years, problems caused by machine deposit have been increasing in Japan due to thedeterioration of recycled paper utilization rates and raw material conditions. Furthermore, quality
requirements from corrugated board mills have become more stringent and reducing the defect rate has
become a major issue.
In addition, with a shrinking workforce and the retirement of skilled workers, it is becoming increasingly
difficult to respond to machine soiling in a timely. and accurate handling. In response, we are developing"SmartPapyrus🄬," a system that visualizes machine deposits with IoT, performs predictive analysis ofdefects and paper breaks using AI, and prevents defects and paper breaks with machine deposit
prevention technology. The goal of SmartPapyrus® is to eliminate defects and breaks in the papermaking
process. The elimination of defects and breaks will reduce the amount of work required, and byeliminating wasteful work, not only will the machines be more productive, but also the workers will beable to focus on more productive work. Furthermore, by reducing the number of defective products due todefects and paper breaks, energy consumption can be reduced. This will contribute to decarbonization.
Therefore, we have started to develop a defect occurrence prediction analysis as SmartPapyrus® 2,0.
SmartPapyrus® 2.0 receives machine condition data from DCS and QCS, in addition to SmartPapyrus®
Ver.1 fabric deposit data and SmartPapyrus® 1.0 defect information and analyzes it using AI to detectsigns of defects before they occur and to propose countermeasures to reduce defects. The system thenanalyzes the data to detect signs of defects before they occur and proposes countermeasures to reduce
defects. In this report, we introduce an overview of the analysis of signs of defect occurrence and present
a preliminary report on the Proof Of Concept (PoC) experiment.

JAPAN TAPPI JOURNAL 10

CONTENTS

October 2023

Vol. 77, No. 10

Papermaking Technology Ⅱ
1 The Latest Winder Technology……Hideki Maeda
5 SmoothRun/Active Damping Technology
10
16
22
26
32

―Reduce Vibration During Winding Process―……Kanato Mizukoshi

The Transition and Latest Trends of Roll Wrapping Machine……Shinichiro Kaji
Sheeter Technology―Challenges and Innovation for Paper and Board Market―……Noboru Matsumoto and Lorenzo Alba

Examples of Improvement in Finishing Process……Shoichiro Kida
Web Inspection System Technology Trends……Shuichi Shoda
The Key Points for Monitoring System to Achieve Efficient and Effective Pest
Management……Takeo Ishizaki

Topics & Information

40

Control of Foam on White Water and Improvement of Operational Efficiency byModeling a Soft Sensor……Yusaku Okura
Development of Refining Technology……Nobuhiko Okumura

44
50 ―Foam Control Solutions that Evolve Day by Day―A Permanent Chemical Approach to Solving Problems in the Papermaking
Process……Yoshitaka Sakuraba
55 Optimization of Wet-end Process by Slime Control Agent “CURECIDE” andCoagulant “REALIZER”……Saori Takesue and Koichi Tadaki
62 Visualize and Reduce Fiber Losses by OnView.MassBalance
66……Nodoka Furubayashi

Paper Chemicals for Environmental Sustainability……Shuhei Akita, Takuji Sodeyama and Syunsuke Hayashi

Introduction of Research Laboratories（153）72

Department of Mechanical Systems Engineering Graduate School of Engineering,Tokyo University of Agriculture and Technology

Pulp and Paper Mills in Japan（104）75

Mishima Plant, LINTEC Corporation

03
71
74
81

Committee report
Essay on Intellectual Property
Coffee break
Papyrus

84
90
97
98
100

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 October JAPAN TAPPI JOURNAL
Vol.77, No.10 Abstracts

The Latest Winder Technology
Hideki Maeda
NAGAI TEKKO Co.,LTD
Nagai Tekko Co., Ltd. has responded to customers' requests by constructing a new factry in September
1993, while responding to the increasing size and precision of its paper machinery, with a focus on winder
equipment. In recent years, the company has focused on improving the productivity and quality ofWinder, as well as developing labor-saving and automation technologies, as shown below.
1993:Automatic Rollchange system that takes full advantage of the core taping and endroll taping
devices with no loooseness of rolls.
2004:Web threading device above drumrolls that allows one person to thread web even a wide machine,
2005:NC slitter with simultaneous movement of all slitters and automatic core chuckpositioning" fordutytime reduction
2006:Device for Reduce dutytime of Rollchange process to improve productivity.
2011:"fully automatic coreless winder" for pulpmill that incorporates the world's only technology.
2013~2022: 4 automatic paper core cutting and feeding machines were introduced one after another.
2017:’Mother Rool Automatic Transfer System', 'Automatic Defect Repair System', 'Winder Monitoring
System' for labor-saving .
2021: We developed 2200 mm wide new rewinder with original drive system.
2023: Operation of the winder monitoring support system started.
In August 2022, the fourth “automatic paper core cutting and feeding machines” was put into
operation, and as a standard model, I would like to introduce the outline of the equipment and the outlineof the winder monitoring support system that started operation in 2023.

SmoothRun / Active damping technology-Reduce vibration during winding processKanato Mizukoshi
Voith IHI Paper Technology Co., Ltd.
Winders are always expected to run full capacity especially the line installed only one winder. Capacity
limit of winder directly connected to paper machine capacity. There could be many reasons that winder
can not perform full capacity, such as vibration, winding quality, paper quality. Major cause is operation
speed reduction or winding quality caused by vibration.
In conventional winders without special damping, vibrations can occur at higher production speeds forcertain paper grades, and these vibrations can impair winding quality and production capacity. To
minimize the disruptive effect of vibrations during the winding process, the production speed andaccelerations rates are reduced below the maximum capability of the winder. Our solution is SmoothRunhydro-pneumatic damping bearings which can be effectively reduced the vibration even at high speeds.
This mean winder can operate at high production speed constantly. At the same time, SmoothRun
improves the winding results and reduces the overall mechanical stress on the machine.

The transition and latest trends of Roll Wrapping Machine.
Shinichiro KajiKAWANOE ZOKI CO.,LTD.
In the past, one winder and one wrapping machine used to be arranged to process paper produced
by one paper machine. In recent years, however, control of production data by computer has madegreat progress, and now we are in an environment where production data of wound rolls as finishedproducts can be rapidly processed online.
Therefore, we have been able to develop a wrapping machine with a large processing capacity, that
can automatically process various types of wound rolls produced by more than one paper machine tosave labor, space and energy required by wrapping at a mill.
Our wrapping machine consists of equipment such as bar code reader, printer, wrapping machine,
marking device and labelling device. Even a non skilled worker will be able to operate our wrapping
machine in a short time because each equipment is reliable and can stand continuous operation for along time, and also because of features such as complete interlocking and easy input setting, changing
and monitoring by touch panel, based on our wide experience and achievements.
Through the use of our wrapping machine, complete wrapping of wound products can be performed.

Sheeter Technology-Challenges and Innovation for paper and board marketNoboru Matsumoto
Horikawa Engineering Works Ltd.
Lorenzo Alba
Milltex S.p.A.
In this paper we overview market tendency of printing paper outside of Japan through a reportof an Italian sheeter supplier, Milltex, who delivered more than 460 sheeters to 20 countries
worldwide in the past 30 years. Because of vast expansion of e-commerce demand of digitalprinting paper is increasing while coated paper is reducing. We are going to introduce challengesof Milltex in energy saving and automation of sheeter lines. Also challenges to convert excessive
paper to digital printing paper and on-line sheeter system for duplex board.

Examples of Improvement in Finishing Process
Shoichiro Kida
Kida Iron Works Co.,Ltd.
Kida Iron Works Co.,Ltd. was founded in Osaka in 1928 and started manufacturing machine parts.
At the time when the textile industry was booming, Kida's self-developed humidifier was widely used inspinning mills in Japan, and later entered the recycling industry to meet the needs of the times. Later,
the company began designing and developing labor-saving equipment for the printing industry, which
continues to this day.
The New Turner series is the fully automatic system that turns sheets over, aligns sheets and removes
dusts and powders by air blow. This series has been adopted by large and small printing companies
throughout Japan, and currently hold the top share of the domestic market. The company also builds
systems to solve users' problems based on its specialized know-how in the printing industry. The
company is a typical "monozukuri" (manufacturing) company with its own integrated system fromdesign to manufacturing, installation, and repair. The company's products include the "Turner Series" ofpaper reversing machines, the "Blanks Checker" of blanks inspection system, the "Mini-Piler Series" ofpaper alignment high stacking machines, FA, and many other custom-made products. The flexible
systems and durability of the machinery built from many years of experience and know-how are wellreceived.

Web Inspection System Technology Trends.
Shuichi Shoda
AMETEK Co., Ltd. SURFACE VISIONIn recent years, the technology for image processing has greatly improved. Digital cameras havebecome higher in resolution and speed, and computers are now capable of faster processing, enabling thedevelopment of new features in defect inspection systems. In this article, we will introduce some of the
newly functions in SmartView inspection systems. Normally defect inspection systems only stored image
data of the detected defects, but the newly developed streaming video can display, save, and replay theentire length and width of the roll. Using this streaming video data, a virtual inspection function has
also been added for re-inspection of the roll. One of the new technologies is camera signal multiplexing,
which generates multiple camera signals (video data) from one camera and allows separate multiple
inspections to be performed in a single camera frame. The adaptive thresholding that follows backgroundfluctuations and adjust the thresholds. SmartLearn classification combines automatic, learningclassification. To use both functions SmartView system strongly supports detecting and classifying
defects. Integration with external systems has also been enhanced, allowing SmartView systems toincorporate data from other systems and display that data on the SmartView screen, or transfer defectimages and feature data acquired by SmartView to external systems.
Ametek intends to continue to support customers in building the most suitable inspection system fortheir manufacturing sites, leveraging the strengths of the defect inspection system manufacturer.

The Key Points for Monitoring System to Achieve Efficient and Effective Pest Management
Takeo Ishizaki
Earth Environmental Service Co., Ltd
For efficient and effective pest management, the monitoring system (investigation using trapping tools
such as light trap, wandering insect trap, and rat trap) plays an important role. Unless we establish theappropriate monitoring system, we can’t get accurate information about insects or rats intrusion or
inhabitation, leading the customer’s complaints or the loss of products related to insects. On the other
hand, there is also the possibility that excessive plan might lead to an increase the burden on the site.
Therefore it is necessary to understand the importance and the role of the monitoring system in thewhole managing system in order to select the right trapping tools or where to place them, based on therisk-based approach.
In this paper, several key points for monitoring systems to achieve efficient and effective pest
management were mentioned. First of all, we have to understand the total structure of pest management(Pest management program),including annual plans, organization, the way of communication,
inspection/investigation, countermeasures, and training. Monitoring system is a part of pest
management program, related to other elements. The meaning of “monitoring” is to analyze thesampling data and to utilize it for the root cause analysis, corrective and preventive actions, andverification, therefore we need to choose the suitable monitoring method based on the possible risks(characteristics of insects/rats and the importance of the zone in the factories).
As for the selection of trapping tools toward flying insects, we have to select light trap model based on
the properties of area and to make a decision for places of installation on the hypothesis that we suppose
flying insects’ pathways of intrusion, considering not only the effectiveness to trap flying insects, but also
the risk for attracting insects more than necessary. While, we select types of wandering insect trap andrat trap based on the characteristics of insects/rats or the environment around the place of installation（e.g. the floor which got wet）, and we install them on the places where wandering insects/rats canintrude or inhabit. In this manuscript, several risk-based viewpoints were provided. In addition, I
introduce the latest rat-monitoring on-line system called “Pescle”, which we developed in partnershipwith Ryoden Trading Co.,Ltd. We can only get accurate information using our original AI techniques
for Pescle in order to formulate a sustainable pest-control systems.）
Finally, several points to remember concerned with monitoring system, such as the interpretation of
the monitoring data was provided here.

Control of foam on white water and improvement of operational efficiency by modeling a soft sensor
Yusaku Okura
Rengo Co., Ltd
Recently, the improvement of digital technology has made it possible to accumulate large amounts ofprocess data that had not been fully utilized.
With advances in technology of data accumulation, it is being especially important to handle big data.
By using these data, it is possible to predict the occurrence of machine error or defects in products.
Papermaking process is getting to be automated by application of such technology, but it still remains
many controls that are set manually by operators. Therefore, it is a significant issue for paper industry
to advance further digital transformation.
In this paper, we introduce our efforts focusing on foam on white water during the papermaking at the
Kanazu mill, which is our DX model plant.
In our case, we had a problem of occurring defects by foam from white water and these defects had
generated paper shorts. We had tried to solve this problem by utilizing big data accumulated in the Plant
Information Management System. We had made a soft sensor consisting of extracted features with data
analysis by Python programming and had been automated the addition of defoamer with a constructed
soft sensor.
This effort enabled us to reduce occurring of defects and improvement of operational efficiency.

Development of Refining Technology
Nobuhiko Okumura
Engineering Division / Aikawa Iron Works Co., Ltd.
The importance of the refining process in the stock preparation system is well known. The refining
process, which greatly affects the properties of the target paper, is also a process that consumes a lot ofenergy in the stock preparation system, so research has been continued from various points of views.
Since the development of the first domestically produced continuous cone-type refiner "Super Refiner" in
1954, we have been challenging for ways to optimize the refining process from the perspective of a stock
preparation equipment manufacturer.
In this report, we will look back on the background of the development of each refining equipment andthe required functions while tracing the transition of refining equipment up to the present. It also
introduces the refining mechanism and the general selection method of refining filling pattern.

-Foam control solutions that evolve day by dayA permanent chemical approach to solving problems in the papermaking process
Yoshitaka Sakuraba
Nissin Kagaku Kenkyusho Co., Ltd.
In papermaking processes, foam can cause a variety of problems everywhere. Foam problems not only
hinder operation and productivity, but often have a negative impact on product quality, making foam
control extremely important in solving problems in the papermaking process.
Since we started supplying papermaking chemicals to paper companies nationwide in 1948, we havebeen working together with our customers on foam control, and have developed a wide range ofcustomized products for each customer process, and have become a chemical assistant for solving foam
problems.
In recent years, the environment surrounding not only paper manufacturers but also chemical
manufacturers has changed drastically due to a combination of factors such as a drastic disruption in
the supply of raw materials caused by the global spread of the new coronavirus, soaring raw material
prices due to inflation, and restrictions on raw material use due to various regulations aimed atenvironmental friendliness.
In this paper, we report on the latest trends in foam control measures that we have been working
on in the midst of this rapid global situation.

Optimization of Wet-end Process by Slime Control Agent“CURECIDE”
and Coagulant“REALIZER”
Saori Takesue and Koichi Tadaki
SOMAR Corporation
In recent years, there has been an increasing trend toward more paper making defects and paper
breakage problems in paper machines. Paper making conditions are becoming more severe due to thedecline in the quality of pulp and recovered paper raw materials and the accumulation of contaminantscaused by the closed paper machines. The focus of this study was on the fact that, based on the resultsof analysis of paper making defects and paper machine tool deposits, there are many cases in which slime
involving microorganisms, adhesive pitch consisting of vinyl acetate, styrene, and acrylates mixed infrom recovered paper, and anion trashes form a complex foreign matter. To improve the operation of
paper machines, it is essential to reduce paper defects and breaks, and many paper machines have
similar problems.
In terms of paper quality, the dosage of additives such as sizing agents and paper strength agentsadded tends to increase in order to improve and maintain quality, and in some cases, the fixation of these
additives is poor. If these unsettled additives circulate and accumulate in the system, they can cause
paper making defects and trouble with stains on the paper machine tools. To improve the operation of
the paper machine, such as to reduce the number of paper breakages and defects, it is important to
optimize the dosage of various additives without degrading the quality of the paper.
We have applied the slime control agent“CURECIDE Series”and the multifunctional coagulant“REALIZER A Series”to various fields such as paper machines, paperboard machines, and household
paper machines, and conducted tests to improve the operability and paper quality of paper machines
using the optimum addition method and optimum addition amount. The results of the tests will bepresented.

Visualize and Reduce Fiber Losses by OnView.MassBalance
Nodoka Furubayashi
International sales department, Voith IHI Paper Technology Co., Ltd.
Voith is promoting the digitization of the papermaking process under the name of PM4.0. While
increasing the number of digital products delivered to the papermaking process worldwide, we are also
developing digital products for the raw material process as a full-line supplier. This article introduces a
product called OnView.MassBalance that visualizes fiber loss in the OCC line.
Generally, fiber loss in the raw material process is known only on a monthly or weekly basis, and it isdifficult to pinpoint the location of the process in which the loss occurs. By using OnView.MassBalance
developed by Voith, the flow rate of feed, accept, and reject of each process is clearly displayed in a chartformat called Sankey diagram, and it is possible to identify the place where fiber loss is high in real time.

Paper chemicals for environmental sustainability
Shuhei Akita，Takuji Sodeyama and Syunsuke Hayashi
Sales, Paper Chemicals Company, Harima Chemicals, Inc.*２
Paper Chemicals Development, R&D Center, R&D Company, Harima Chemicals, Inc.
Global warming and climate change have become primary concerns for all countries and industries.
Reducing greenhouse gas emission is critical to address the issues, but the paper industry is known asan“energy-intensive industry”, consuming large amounts of energy in the Kraft pulp and paper making
processes.
In Japan, the paper industry has taken various approaches to achieve carbon neutrality by 2050 which
is a long-term target for environmental sustainability announced by Japan Paper Association.
Under these circumstances, Harima Chemicals Group has been providing various solutions with its
philosophy in mind, "Live a better life with what nature provides". Harima is a pine chemicals company
providing products based on pine-derived raw materials, that are natural and renewable resources
grown by sunlight and water. Harima produces pine chemicals such as tall oil rosin and tall oil fatty acidby distilling crude tall oil (CTO) extracted from the Kraft pulping process. Harima also generates green
power using biomass fuel from by-products of the CTO distillation process.
In this presentation, Harima would like to introduce its sustainable business model, and eco-friendly
paper chemicals as solutions for the achievement of sustainability in the paper industry. The paper
chemicals include enzymes for better runnability and environmental response, and water-based barrier
coating chemicals for plastic replacement and utilization of paper materials.

JAPAN TAPPI JOURNAL 11

CONTENTS

November 2023

Vol. 77, No. 11

Pulp and Paper Research Conference
1 Report on the 90th Pulp and Paper Research Conference……Wood Science Committee, JAPAN TAPPI

10

Building a Cellulosic Biomass Fractionation Industry for a Decarbonized Society……Kiyohiko Igarashi

13

Improving Retention by Optimizing the Charge of Papermaking Materials with
Coagulants……Koichi Tadaki

15

Effect of Rosin-based Plastic Additives to Improve Physical Properties ofPolyethylene/Cellulose Fiber Composites……Tsubasa Ito

17

Application of Amphoteric Acrylamide Copolymers as High Performance
Papermaking Additives……Kairi Yamato and Kazuhiro Kumeda

20

Reduction of Basic Unit by Digester Additive in the Pulp Cooking Process……Masayuki Kanamura

Topics & Information

23 A Report of the 21st International Symposium on Wood, Fiber, and Pulping
Chemistry（ISWFPC）2023, Venice……Tomoya Yokoyama, Toshihiro Komatsu,

Takao Kishimoto, Tetsuo Kondo, Yasumitsu Uraki, Korawit Chitbanyong, Gaoyuan Hou,
Qinyue Gong, Esty Octiana Sari, Ayu Yamaguchi and Hiroshi Ohi

34 Utilizing Robotics for “Smart Inspection/DX” of Factories, Plants, etc.
……Takayuki Kumada, Kenro Tanaka, Sho Hirabaru and Masatoshi Endo

39 DX in the Process Industry as a Reflection of Contemporary Social Demands……Tetsushi Iwasaki

45 Consistency and Fiber Morphology―Key Process Factor for Pulp Process Control―……Kiyoyuki Dohi

03
52

Committee report
Papyrus

57
61
70
71
73

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 November JAPAN TAPPI JOURNAL
Vol.77, No.11 Abstracts

Building a Cellulosic Biomass Fractionation Industry for a Decarbonized Society
Kiyohiko Igarashi1
Graduate School of Agricultural and Life Sciences, The University of Tokyo
Currently, most plastic production from biomass is done either by breaking down the extracted oil andsugar components as they are, or by breaking down the constituent sugar components intomonosaccharides, converting them into onomers, and polymerizing them to obtain plastic. In the former
case, there is often competition for food, and in the latter case, the conversion process is economically andenergy inefficient. Therefore, the goal of this research is to develop technologies to enable cascade
utilization of biomass according to its tissue structure and molecular weight. In other words, when
unutilized biomass is converted by enzymes, etc., we aim to develop technologies to utilize the parts that
tend to remain as fiber, the components that are chemically difficult to decompose as polysaccharides oroligosaccharides, and the parts that are easily decomposed as monosaccharides.
Improving retention by optimizing the charge of papermaking materials with coagulants
Koichi Tadaki
Technical Div. Technical Dept., SOMAR Corporation
Various pulp materials used in paper mills vary greatly in fiber length and charge status dependingon the type of pulp. Therefore, pretreatment to adjust the charge is necessary in some cases, and in recent
years, polymer-based coagulants have been increasingly applied. In this paper, we report on therelationship between the optimization of the charge state and the raw material retention by applying acationic polymer type coagulant.
Neutral paper making is the current mainstream, and the alum, which was used for charge
adjustment in acidic paper making, is less effective in neutral area. This is due to the fact that thetrivalent cationic charge of aluminum decreases with increasing pH. Aluminum ions in the neutral
region become hydroxide complex ions and their charge valence decreases. If the anionic charge of thepulp material is too high, the excess charge may interfere with the effect of the retention aid added in
the wet end process. In such cases, the addition of a coagulant can neutralize the anionic charge andimprove the retention of the raw material, so it is very important to know the state of charge of the pulp
material and the state of charge at the wet end.
Effect of rosin-based plastic additives to improve physical properties of polyethylene/cellulose fiber composites
Tsubasa Ito
Arakawa Chemical Industries, Ltd.
Plastic composites using cellulose as filler have been actively investigated in recent years to enhance
the biomass content of molded products. However, polyolefin-based plastics lack affinity with highpolarity fillers due to their low polarity, and there are often issues in terms of physical properties whenused as composites. In this study, we applied rosin derivative containing polar groups, a rosin-based
resin, as an additive for polyethylene/cellulose fiber composites.
The results showed that rosin derivative containing polar groups was effective in improving thephysical properties of the polyethylene/cellulose fiber composite. Microscopic images suggested that rosin
derivative containing polar groups contributed to the improvement of interfacial adhesion between
polyethylene and cellulose.

Application of amphoteric acrylamide copolymers as high performance papermaking additives
Kairi Yamato, Kazuhiro Kumeda
SEIKO PMC CORPORATION
Amphoteric polyacrylamides are utilized as dry strength agents in the papermaking process of thepaper industry. The cationic and anionic groups existing in the amphoteric polyacrylamides are known
as interaction sites with the pulp that promote the adsorption of amphoteric polyacrylamides onto thepulp fibers. Based on this feature, we investigated the effect of different anionic groups on the propertiesof amphoteric polyacrylamides and evaluated their performances as papermaking additives. The
degree of ionization and the formation of poly-ion complex of the amphoteric polyacrylamides in the
aqueous solution were found to change depending on the anionic groups. Furthermore, it was
discovered that these paper strength agents with different anionic groups changed their performancesin the presence of aluminum sulfate. Notably, the novel amphoteric polyacrylamide in this report is lessdependent on the amount of aluminum sulfate used in the papermaking process.

Reduction of basic unit by digester additive in the pulp cooking process
Masayuki Kanamura
RIKENGREEN Co., Ltd.
Due to the current world situation, various prices are rising, so paper manufacturers are required toreduce the basic unit these days. This paper focused on the cooking process of the kraft pulp method, anddescribed the possibility of reducing the unit consumption of pulp production through efficient cooking.
The mechanism of action of the Solenis cooking aid was explained and this product was compared withanthraquinone which is a traditional cooking aid. The effectiveness of Solenis' cooking aid was shown
based on two mill trials overseas.

A Report of the 21th International Symposium on Wood, Fiber and Pulping Chemistry (ISWFPC) 2023, Venice
Tomoya Yokoyama and Toshihiro Komatsu
The University of Tokyo, Wood Chemistry
Takao Kishimoto
Toyama Prefectural University, Bioorganic Chemistry
Tetsuo Kondo
Enviro-sustainable Materials, Tokyo University of Agriculture and Technology
Yasumitsu Uraki
Hokkaido University, Wood Chemistry
Korawit Chitbanyong and Gaoyuan Hou
The University of Tokyo, Graduate School, Cellulose Chemistry
Qinyue Gong
Nagoya University, Graduate School, Forest Chemistry
Esty Octiana Sari
University of Tsukuba, Graduate School, Biomaterial Chemistry
Ayu Yamaguchi
Toyama Prefectural University, Graduate School, Bioorganic Chemistry
Hiroshi Ohi
University of Tsukuba
The International Symposium on Wood, Fiber and Pulp Chemistry (ISWFPC) has a long history. It
has been held every other year since 1981 (Stockholm), and this year marks the 21st time. The 2021 was
postponed due to the pandemic, so it past four years since 2019 (Tokyo). It was held in Venice from July
4th to 7th, and is headed by Prof. Claudia Crestine, Ca' Foscari University of Venice. Approximately 200
researchers and students (235 peoples including local staffs) from all over the world, mainly from Europe,
participated in 84 oral presentations divided into 3 rooms and in 86 poster presentations into the fields
of wood biorefinery, cellulose and lignin (35, 20 and 31, respectively) over 3 days. At the beginning of thefirst and second days, Dr. John Ralph (USDA, USA) and Prof. Thomas Rosenau (BOKU University,
Austria) gave plenary lectures on lignin and cellulose, respectively. The next 22nd symposium in 2025
will be held in Raleigh, headed by Prof. Hasan Jameel of North Carolina State University, USA. Thistime, it has been decided that Pekanbaru, Indonesia will be the venue for 2027.

Utilizing Robotics for “Smart Inspection/DX” of Factories, Plants, etc.
Takayuki Kumada, Kenro Tanaka, Sho Hirabaru and Masatoshi Endo
Blue innovation Co., Ltd.
We provide drone inspections using ELIOS, which allows you to fly safely indoors. There are merits
such as improvement of worker safety, improvement of work efficiency, cost reduction of inspection cost,and predictive maintenance by digital data conversion. Starting in 2018, it has been used in more than
200 sites. For example, duct inspections could complete a task that used to take a day in just 30 minutes.
DX in the Process Industry as a reflection of contemporary social demands
Tetsushi Iwasaki
FUJITSU LIMITEDThis article clarifies the factors of the delay and proposes a direction to expedite of the speed of DX.
First, the model of DX activity was presented and the points of view were constructed focusing on
people as the main body of DX.Then,inhibition was verified based on the dialogue history of 100 people
from 61 companies in the process industry.
The true reason for the lack of speed in DX is that the value-creating activity model has not been
established yet.There is potential for improvement through a framework approach.

Consistency and Fiber morphology-- Key process factor for pulp process control―
Kiyoyuki Dohi
Sales and technical adviser, Process Industry Division, ABB K.K.
Currently, industry got strong pressure from the market because Japan government announced
carbon neutral industry by 2050. In Japanese industry, especially material industry, there are several
serious potential issues like lack of human resource due to less attractiveness for young people,
retirement of baby boomer and the technical transfer. On the other hand, there are bright future in paperindustry because paper is excellent material for plastic reduction and new functional material, Cellulose
Nano Fiber.
ABB started following four approaches to cooperate with customer to solve facing issues.
1) Reliable and high-performance online measurement for Refiner, Wet end control
2) Cutting-edge fiber analyzer for new material development3) Speedy, Safety and high precise paper testing machine
4) High speed, high precise and reliable automated paper testing machine
In the paper, 1) Reliable and high-performance online measurement for refiner and wet end control is
described. You can understand how ABB L&W online measurement is reliable and how to utilize themeasurement data for process optimization.

JAPAN TAPPI JOURNAL 12

CONTENTS

December 2023

Vol. 77, No. 12

Environment
1 A Report of the 30th Environmental Conference……Environmental Technical Committee, JAPAN TAPPI

3 Countermeasures Against Factory Odor Using Odor……Takayuki Ebihara
9 By Ultra BM-R System（Ultra Fine Bubble＋Recycled Raw Material Modifier）
Environmental Odor Countermeasures and Energy and Cost Saving Measures
13
17
22
27
32
39
46

……Kazuhisa Hashimoto

Standards for Synthetic Resin Utensils, Containers and Packaging Under the
Food Sanitation Act……Tomoyuki Abe
Container and Packaging Standards for Milk, etc. and Association VoluntaryStandards: Past, Present, and Future……Ryogo Hirano
30 by 30 for Biodiversity……Makoto Kobayashi
The Outline of “M-fine”, Submerged Membrane Unit for Wastewater Treatment……Kazuhiko Takayama

Domestic and International Trends Regarding Climate Change and GX League
Initiatives……Keita Takeshita
Carbon Footprint and Corporate Emissions Accounting……Wataru Kawamura
Noise and Odor Countermeasures in Manufacturing Factories……Shingo Seki

Topics & Information

55 Drainage Load and Odor Reduction Measures Using the AQUAS CLEANJET
System ……Teppei Tomokuni
63 A Report on Revision of the Japanese Standard（JIS）P 8149 Paper and board―
Determination of opacity（paper backing）―Diffuse reflectance method……JAPAN TAPPI, Pulp and Paper Testing Standards Committee

66 A Report on the 63rd National Conference of the Pulp and Paper Industry on
Safety and Health……Hidenori Maeda
Introduction of Research Laboratories（154）72 Co-creation of Communities Research Division, Institute for Future Initiatives,
the University of Tokyo
Kikuchi Lab., Department of Chemical System Engineering, the University of Tokyo
Presidential Endowed Chair for “Platinum Society”, the University of Tokyo

Research Report

75 Novel Analysis of Recycled Pulp-Containing Paper, Including FluorescentWhitening Agent:Part 2 A Comparison of Quantitative Measures of Wastepaper Pulp Content in Recycled
Paper Prepared from Softwood Bleached Kraft Pulp……Tatsuhiko Sakawa, Atsushi Narita,
Susumu Kawanobe, Ryota Kose, Hailan Jin and Takayuki Okayama

03
71
74

Committee report
Essay on Intellectual Property
Coffee break

100
103
117
118
120

Industry News（Domestic and International）
List of Patents issued and Laid-open Publication
Price list of Domestic Logs and Wood Chips by District
Other Monthly Statistics
News from the Association

2023 December JAPAN TAPPI JOURNAL
Vol.77, No.12 Abstracts

Countermeasures against factory odor using odor
Takayuki Ebihara
CORE CORPORATION.
IoT systems commonly use sensors to collect data which are then managed in the cloud.
Our company has developed IoT systems by wirelessly connecting commercially available
sensors as well as in-house developed sensors. In particular, we are exploring how to quantify andexpress the five human senses.
One user suggested that if we could visualize 'smell,' it could have various applications acrossdifferent fields. This led us to initiate the study of visualizing odors. Starting with the numericalvalues from 'smell' sensors, we discovered that different factories faces various challenges.
As a result, we have been able to commercialize the IoT integration of 'smell.

By Ultra BM-R System (Ultra Fine Bubble + Recycled Raw Material Modifier)Environmental odor countermeasures and energy and cost saving measures
Kazuhisa Hashimoto
Mushugen Industries Co.,Ltd.
In recent years, due to soaring raw material and fuel prices, efforts to save energy and cost havebecome active at paper mills, especially at paperboard mills, but there are also issues in terms of stable
quality maintenance and environmental measures.
In this paper, we will discuss the problem of product odor and raw materials associated with cost savingby reusing recovered fibers, using surplus sludge discharged from biological wastewater treatment
processes as raw materials, and water saving and energy-saving measures by recycling white water. Asa countermeasure against the problem of generating the dangerous gas hydrogen sulfide in thepapermaking process and the environmental problem caused by odor generated from the dryer exhaust
duct, we will introduce the Ultra BM-R (hereinafter referred to as UBM-R) system, which combines
Ultra Fine Bubble (hereinafter referred to as UBF) and the recovery material modifier Mushugen BMR (hereinafter referred to as BM-R).
：Temporary creation（JAPAN TAPPI）

Standards for synthetic resin utensils, containers and packaging under the Food Sanitation Act
Tomoyuki Abe
Institute of Food Hygiene,Japan Food Hygiene Assosiation
Due to the revision of the Food Sanitation Law, the Positive List (PL) System for Food Utensils,
Containers and Packaging was enforced from June 1, 2020, and now the sanita tion of food utensils,
containers and packaging is attracting a lot of attention. This paper will explain the standards forutensils, containers, and packaging under the Food Sanita tion Law and describe how to set items andconditions for sanitary tests to ensure the safety of food utensils, containers and packaging and how to
confirm the requirements before requesting sanitary tests. The author expects that this paper helps
improve the hygiene of food utensils, containers and packaging

Container and packaging standards for milk, etc. and association voluntary standards:
past, present, and future
Ryogo Hirano
JAPAN ASSOCIATION OF MILK PACKAGING AND MACHINERYThe Japan Milk Containers and Equipment Association has developed along with the legislation of
the Ministerial Ordinance on Ingredient Standards for Milk and Milk Products (Ministerial Ordinance
No. 52, December 27, 1951) established by the Ministry of Health, Labour, and Welfare (MHLW).
Historically, dairy containers and packaging have been governed under different rules than other foodproducts in the Food Sanitation Law. Standards for synthetic resins used in dairy product containers
and packaging were originally developed to address milk cartons. These standards follow a positive list
approach and prohibit the use of resins and additives other than those specified in the standards.
For non-dairy products, the negative list system was used for a long time, but in 2020 the Food
Sanitation Law was revised and a positive list system was introduced for the containers and packaging
of all processed foods including those that are not dairy-based. However, different standards have long
been applied to dairy and non-dairy products, and contradiction or inconsistency have been noted in thestandards for containers and packaging for both.
To address this issue, the association is currently collaborating with related organizations within thedairy industry to compile specific proposals. In addition, the MHLW is working with the association andrelated organizations to develop a draft revision of the milk and dairy product container and packaging
standards. It is expected that the revision of the standards will enhance the convenience andfunctionality of containers, thereby contributing to an increase in milk consumption.
30 by 30 for Biodiversity
Makoto Kobayashi
Ministry of the Environment Government of Japan.
A new global goal to be achieved by 2030, the Kunming and Montreal Framework for Biodiversity, wasadopted. With regard to resource mobilization, the Global Framework Fund for Biodiversity will beestablished in the Global Environment Facility (GEF)* in 2023. With regard to the distribution of
benefits related to the use of digital sequence information (DSI) related to genetic resources, it was
decided to establish a multilateral mechanism and to establish an open working group to consider
measures other than the multilateral mechanism for COP16.
：Temporary creation（JAPAN TAPPI）

The Outline of "M-fine", Submerged Membrane Unit for Wastewater Treatment
Kazuhiko Takayama
AWAPAPER TECHNOLOGICAL COMPANY, Inc.
The membrane bioreactor of M-fine series was developed by AWA PAPER & TECHNOLOGICAL COMPANY,
Inc. based on the technology of functional papers and filters, especially support fabric of Reverse Osmosis membrane
which is the key product in Desalination plants all over _the world. M-fine is a compact designed membranebioreactor module for fitting into small capacity and footprint and also easy to handle for operation and maintenance.

Domestic and international trends regarding climate change and GX League initiatives
Keita Takeshita
Ministry of Economy, Trade and Industry.
The GX League was officially launched in April 2023. The GX League is conceived in 2022 and has
been working for one year as a preparatory period. In the first phase of the three-year period from April
2023, estimates will be made based on the emissions emitted by each participating company, andemissions trading will be introduced on a full-scale basis from fiscal 2026.
：Temporary creation（JAPAN TAPPI）

Carbon footprint and corporate emissions accounting
CDP Worldwide-Japan
Wataru Kawamura
The term "Carbon Footprint" is often referred to as "CFP" in Japan, which is an abbreviation of"Carbon Footprint of Products," and it means the amount of carbon dioxide emissions over the lifetime(life cycle) of a product or a certain process.
The main purpose of calculating CFP is to quantify the greenhouse gas emissions of products, and it
allows companies to understand the impact of their products and identify where and how they can
reduce their environmental impact. Moreover, it also helps customers understand their environmental
impact associated with products they purchase.
Nowadays, many companies and societies are required to decarbonize, and companies are
increasingly expected to calculate their CFP/organizational emissions to provide information necessary
to select low emission products and to meet the needs of their customers and stakeholders.
In Japan, a program for CFP calculation and labeling have been in place since 2002, and in 2022, theMinistry of Economy, Trade and Industry (METI) gathered a study group to further expand CFP
calculation among Japanese companies. The need for CFP calculation is expected to increase in the
future, and rules and mechanisms are being developed around the world.

Noise and Odor countermeasures in Manufacturing Factories
Shingo Seki
Hitachi Power Solutions Co., Ltd.
Manufacturing factories, including the pulp and paper industry, have a large number of production
facilities, and there are various noise and odor sources in the factories. The following are expected to be
the departments that are actually facing these issues.
(1) Environmental management department in charge of the environment of the entire plant(2) Management department of factory equipment that actually reduces noise and odor (engineering
department)This paper summarizes the technical contents that factory workers in charge of the environment orequipment should know about when considering countermeasures for these problems, focusing on thefield of noise. When actually promoting countermeasures, we hope that the contents of this paper will
be useful for considering effective and economical measures.
：Temporary creation（JAPAN TAPPI）

Drainage Load and Odor Reduction Measures Using the AQUAS CLEANJET System
Teppei Tomokuni
Environment Dept.Technical & Engineering Div. Nippon Paper Industries Co.,LTD.
Nippon paper Ashikaga Mill, Ashikaga is located at about 70km north from the Tokyo metropolitan area and about
50km south-west from Utsunomiya city,Tochigi prefecture. The mill owns the PM1 that produces core paper,
pasting paper board and water-resistant paper board, and the PM3 producing conventional corrugated medium andheavy-duty water-resistant corrugated medium.
In terms of factory location, the site is characterized by the presence of municipal roads and rivers crossing within
the premises. Furthermore, residential areas and farmland adjoin the factory site, making it an environment where
careful consideration for the surrounding conditions is required.
The comprehensive drainage is discharged into the old Fukurogawa, a tributary of the Watarase River, and thecontrol indicators are pH, BOD, and SS. In March 2021, the drainage standards in Tochigi Prefecture were revised,placing a greater emphasis on water quality improvement. In response, our factory implemented measures toenhance the drainage facilities and reduce the drainage load from our production processes.
In this article, we will introduce a case study focusing on the drainage load reduction measures using the AQUAS
CLEANJET System, chosen from among various initiatives.

A Report on Revision of the Japanese Standard (JIS) P 8149 Paper and board — Determination of opacity(paper backing) — Diffuse reflectance method
JAPAN TAPPI
Pulp and Paper Testing Standards Committee
The JIS P 8149: 2023 is published on 20th October 2023 by the Minister of Economy, Trade andIndustry, which has been technically revised. This revised JIS P 8149 standard has been harmonizedwith ISO 2471:2008, which is the international standard. The main changes are as follows.
1) A UV adjustment to conform to the CIE illuminant C is required if fluorescent whitening agents arepresent in the paper or board.
2) The table of weighting functions for the instruments that have bandpass correction is added.
3) The value is read and recorded to the nearest 0.01% unit instead of 0.05% unit.
4) Precision for measurement methods is added since recent international standards emphasis on
adding precision.
A Report on the 63rd National Conference of the Pulp and Paper Industry on Safety and Health
Hidenori Maeda
Japan Paper Association
Japan Paper Association (JPA) held the 63rd National Conference of the Pulp and Paper Industry on
Safety and Health in person at Yokohama city for the first time since 2019 on September 2023. The
conference had 290 participants from member companies and cooperating companies.
The conference took place over two days, and the program of the first day include plenary session,
special lecture and social gathering. In the second day, six breakout sessions were held, and each session
had three presentations of case studies and group discussion. In the group discussion, each group(consisting of seven or eight participants) discussed preset theme and set action targets. At the end of
the group discussion, each group reported on the discussion contents and action targets set in thediscussion, in order to share them among the participants in breakout session.

Novel Analysis of Recycled Pulp-Containing Paper, Including Fluorescent Whitening Agent:Part 2 A Comparison of Quantitative Measures of Wastepaper Pulp Content in Recycled Paper Preparedfrom Softwood Bleached Kraft Pulp

Tatsuhiko Sakawa, Atsushi Narita, Susumu Kawanobe, Ryota Kose
Hailan Jin and Takayuki Okayama
Department of Environmental and Natural Resource Sciences, Faculty of Agriculture,
Tokyo University of Agriculture and Technology
To build a society that achieves sustainable development with less environmental impact, the recovery
rate of wastepaper has increased by reducing paper waste and protecting forest resources; the utilization
rate of wastepaper as a raw material for papermaking has increased accordingly. As the recycled paper
is widely used as an environmentally friendly product, estimating and evaluating the wastepaper pulp
content in paper and paper products is necessary. However, discriminating between virgin pulp fibers
and wastepaper pulp fibers in paper and paper products is challenging because there is a wide range of
wastepaper types. Moreover, the pulp fibers are physically or chemically altered during the wastepaper
process.
In this paper, we prepared recycled-paper model handsheets from softwood bleached kraft pulp (SBKP)
with an internal additive of fluorescent whitening agent (FWA) and compared three test methods for
estimating the blending rate of wastepaper pulp. In addition to estimating the blending rate ofwastepaper pulp from the image analysis of paper samples using confocal laser scanning microscopy(CLSM), the blending rate of wastepaper pulp from pulp fiber was examined through fluorescencemicroscopy (FM); evaluation by the visual method and image analysis was also conducted.
The mean luminance (mean fluorescence intensity) of paper samples calculated from the images
obtained by the CLSM method showed a high correlation with the wastepaper pulp content regardlessof changes in the amount of FWA added or the type of bleached pulp. Another advantage of the CLSM
method is that it enables the estimation and evaluation of wastepaper pulp content without the need todefibrate the recycled paper sample.