|Technical Trend of Printing
Industry, and Coated Paper/Imported Paper
Dai Nippon Printing Co., Ltd.
"Graphic Arts" is now going to be "Printing Industry".
In the printing industry, the digitalization of prepress-process
has been established at the end of 1990s. And from the beginning
of this century, the development of the printing technology is concentrated
on the improvement of productive efficiency and the standardization
of the print-quality. For this standardization, it tends to be more
important to study interrelations between the print-quality and the
This paper describes the technical trend of printing press and printing
process, and the technical problem concerning the coated paper.
A State of Art of the Board Coating Technology
Coating and Finishing Engineering Department,
Voith IHI Paper Technology Co., Ltd.
Low speed and small width coaters have been used for paperboard
coating in the past. However, production by high speed and large
width coating machine is recently getting popular. Due to this
trend, uniformity of coating and drying at cross direction is becoming
a great concern for manufacturers. High power drying becomes important
In order to cope with such demand, we developed new coating system
such as DF Coater, SF Coater and HP-SCAF Dryer. DF Coater (Curtain
Coater) could realize non-stop coating by no loss time from cleaning
coating head and changing consumable parts.
Being developed based on Jet Fountain Blade Coater and DF Coater,
SF Coater has both advantages from them.
Due to high power drying, HP-SCAF Dryer could also realize drying uniformity
without giving up stabilized web handling performance.
Operating Experience of Paperboard Coater
Sec.2 Paperboard Production Dept.,
Nippon Daishowa Paperboard YOSHINAGA Co., Ltd.
Nippon Daishowa Paperboard Yoshinaga Co., Ltd. was floated in
April of 2003. We are positively working on the energy saving activity
aiming "Paper Recycling mill".
51 Paperboard machine has 4 on-line coater heads, started up in
1992 and with the purpose of getting into a new business for double-side
coated bleached paper board business.
As one of the pioneers for the recent trend of the combination
of on-machine coater and gloss-purpose calender, 51 Paperboard
machine has developed various experiences and improvements in terms
of runnability, safety, productivity, and cost savings.
This report is described on the operating experience Paperboard
Coater of 51 Paperboard machine from start to now.
Recent Tendency of Coating Technologies
Metso-SHI Co., Ltd
Since the first announcement of introduction of OptiConcept machines
for this century several years ago, Metso Paper have put many OptiConcept
machines into world-wide market. The machines with design speed
of 2000 m/min and 10m wide are running now. As for coaters, Metso
Paper also has OptiCoater technologies, for which different types
of coater heads can be supplied depending on each customer's puopose.
For example, film coaters are now widely used for all on-line LWC
production machines. Blade coaters are widely used for coated woodfree
paper production and coated board production. Then, recent examples
of new coaters are non-contact coaters such as spray coater and
curtain coater. Drying concept for coating station has been also
developed in these years. Air dryers plays major role for drying
In this paper, the author will describe representative OptiCoater
Operating Experience of Water Jet Turn-up Device
Kasugai Mill, Oji Paper Co., Ltd.
The CM3 at Kasugai Mill, Oji Paper has been in operation as off
line coating machine since 1991. Thanks to the fine improvement
of PM10 which produces base paper for CM3, production rate of the
coater has increased gradually, but on the other hand, unsuccessful
turn up at high weight grade became a serious problem. In order
to achieve stable operation, the Water Jet Turn-up device has been
installed in reel section in August, 2005. In this report, I describe
the outline of remodeling, the operation experience, and the effect
of the project.
How to Detect Defects on Coating Paper
- SmartView Inspection System Technology -
Surface Inspection Systems Division, COGNEX K.K.
The Cognex SmartViewR Inspection System have been successfully
inspecting various grades of coating paper in coater, supercalender,
cutter and sorter. And Cognex developed Advanced Winder Advisor,
which locates defects at the re-reeler or winder and controls the
winder to stop on the selected defects.
We will introduce SmartView technology focused on how to detect and identify
defects on coating paper.
Low Intensity Refining
- The Approach from the Refiner & the Refining Fillings -
Aikawa Iron Works Co., Ltd.
From ancient times, the refining has been a most important process
to decide the paper characteristics, but the refining style changed
with the times. A thing having the biggest influence in this transition
is a change of paper stock itself. Recently, the planted LBKP fiber,
and the recycled secondly fiber, these are the today’s main raw
materials for paper, length are becoming the shorter and shorter,
accordingly their freeness are also getting to lower and lower.
Today, therefore, is the big turning point of the refining from
cutting to the "Low Intensity Refining" which can keep the length
of fiber and change the shape of fiber to improve the paper mechanical
properties. In this report, we AIKAWA IRON WORKS introduce our
approach for the "Low Intensity Refining" with the capital refiner
and the refining fillings.
The Development of New ASA Sizing Agent and that Systematized
Kenji Tsunekawa and Kazutaka Kasuga
R & D Dept., SOMAR Corporation
Koichi Tadaki and Hiroyoshi Numoto
Technical Dept., SOMAR Corporation
In recent year, low priced wet-end chemicals tend to be used in
paper industry because of reducing costs and the productibity.
Also the conditions of runnability are getting worse by increasing
the recycle fiber sources and the improvement of runnability. Alum
used in acid papermaking brought the ability regarding fixation
of Rosin sizing agent. But the usage of Alum is getting down as
the neutral papermaking is growing because of the weak ability
of Alum in higher pH. Rosin sizing agent needs Alum to fix pulp
fibers. So some problems happen in neutral papermaking about the
fixation of Rosin sizing agent.
And the increase of AKD usage in neutral papermaking tends to decline because
of the quality and the cost. In stead of AKD and Rosin sizing agent, Alkenyl
succinic anhydride (ASA) is being paid attention in neutral papermaking. ASA
sizing agent is spreading in Europe and USA but is not used so much in Japan.
In future ASA sizing will be spreading in Japan because of the supply shortage
of Rosin and reducing costs.
We need to control the deposit generating by ASA sizing agent in order to make
ASA sizing spread in Japan. We investigated the method of emulsion, emulsion
polymer, dispersion system and optimum conditions of particle size. Also we developed
the new dispersion system in order to control the deposit by ASA sizing agent.
Optimizing the Paper Machine and Its Tools
- Scanpro, Its Method and Features of the New Felt Moisture Meter
Lorentzen & Wettre Japan K.K.
Press and Dewatering at press part in paper machine has impact
on paper properties, cost of dry part and run-ability, so that
optimizing its part is always required to machine operator. For
its purpose, in order to know press condition, Scanpro moisture
meter was developed and introduced into the market in early of
1970 by AB Scanpro where in Sweden (now merged with AB Lorentzen & Wettre).
Since developed, delivered more than thousand this meters to felt
suppliers, chemical suppliers, machine suppliers and mills all
over the world have been used as benchmark measurement. Now, meeting
demand of more efficient measurement, two kinds of Scanpro meters
are provided, which are Presstuner for measuring moisture and Feltperm
for measuring water permeability. Trial by using both meters ensure
more understanding the press condition and create benefit. This
presentation introduces this method and the feature of New Felt
Moisture Meter, which has just developed and has more advanced
analyze-able function. Short-term effective investment with New
Felt Moisture Meter can be promised.
The Operational Experience of New Canvas Cleaning Facilities "AOKI
AOKI Kikai Co., Ltd.
Currently the utilization of recycled old paper ha been accelerated
especially on paper board manufacturing. This tendency has caused
defective troubles at paper manufacturing process originated by
sticky materials and effected drastically on machine run ability.
For this countermeasure of rejecting sticky materials from the
process, canvas cleaning method might be the best way. Most paper
mill’s operators has expected such method as higher cleaning efficiency
with reasonable price.
Based on the operational experience with "Canvas clean roll" developed by ourselves,
new canvas cleaning facility "AOKI cleaner" has been developed after remodeling
and adding many ideas on it. This report is referred the operational experience
of "AOKI cleaner" on paper board machine.
About Flow Characteristic of Low Viscosity Coating Materials in High Shear Region
Tazuko Watanabe and Keisuke Miyamoto
Nihon SiberHegner K.K.
In practical applications the following information is important concerning
rheological behavior of coatings:
·The propose of coating for the filter of flat panel and the special paper of
ink jet printer
·To take flow behavior of high shear rate region for the process of coating
behavior, leveling, sagging, layer thickness.
This paper informs newer rheological measurement about the behavior coatings.
Presented is a new test method for the high shear rate region of the coating
Application of the Coating with High Wear and Stain Resistance to the Parts for
Tokumi Ikeda, Teruyuki Kitagawa and Junji Taguchi
Nomura Plating Co., Ltd.
Research Institute for Applied Science
Our company has offered various wear (for the paper manufacture industries)
parts and mold-release characteristic parts until now. However, it is not that
are also satisfied and nothing -- it is -- there was a case where meeting the
request could not be finished. So, in this announcement, our company introduces
the various plating which exceed the plating which can be offered now. Although
all needs cannot be grasped since this plating is a utilization stage, it is
the plating which is advancing by our company towards utilization.
The Feasibility of Recycling Zeolite Synthesized from Paper Sludge (CPSZ)
Part 1:The Evaluation of the Chemical and Mineralogical Properties of CPSZ and
the Feasibility of
Takao Ando and Takabumi Sakamoto
Faculty of Risk and Crisis Management, Chiba Institute of Science
Fuji Industrial Research Institute of Shizuoka Prefecture
Naoto Matsue and Teruo Henmi
Department of Agriculture, Ehime Univ.
We tried to synthesize the carbonized paper sludge zeolite (CPSZ) by alkali
hydrothermal treatment for the carbonized paper sludge (CPS) that was collected
from the paper
recycling association in Fuji city of Shizuoka Prefecture. First, the synthesis
conditions were optimized in laboratory scale alkali hydrothermal experiments
(alkali solvent = 20mL) on a hot plate. It was found that the coexistence of
carbon-species with the precursor of zeolite (i.e. metakaolinite) scarcely affected
the crystallization of zeolite. From the measurement of N2 adsorption isotherm,
the specific surface area of carbonized material in CPS increased by 3 times
through the alkali hydrothermal treatment. Next, the synthesis of CPSZ on the
semi-plant scale was carried out in a 50 L boiling reaction-chamber (alkali solvent
= 40L). There was no difference between the products in 20 mL and in 40 L alkali
solvent scale experiments in terms of mineral assemblage and other physical properties.
In conclusion, the CPSZ can be mass-produced up to the scale of 2000 times with
alkali solvent volume. It means that the mass-production of CPSZ is possible
to industrial scale.
Keywords: paper sludge, zeolite, alkali hydrothermal treatment, meso pore,