|2012 April JAPAN TAPPI JOURNAL|
Vol.66, No.4 Abstracts
Operation Experience of Regenerative Thermal Oxidizer for Solvent Based Silicone Coater Exhaust Air
Nakatsu Mill, Oji Specialty Paper Co., Ltd.
Nakatsu Mill produce silicone coated release paper by Solvent based silicone coaters, and the exhaust air from these coaters include Volatile Organic Compounds (VOC). So we have introduced Oxidizers, at first, gDirect combustion typeh, and next, gHeat Regenerative typeh. In this paper, we introduce the operation experience of Heat regenerative thermal oxidizer (comparison with Direct combustion type).
Specific Energy Reduction of TMP Refining with Energy Saving Plates
Kushiro Mill, Nippon Paper Industries Co., Ltd.
TMP (Thermo Mechanical Pulp) has high specific energy because of consuming a lot of electricity at the refining stages. It is very important to focus patterns of the refining plates to achieve energy and cost savings. Kushiro Mill, Nippon Paper Industries, has been challenging specific energy reduction of TMP refining with many trials of installing energy saving plates. We have achieved more than 20% specific energy reduction after installing new energy saving plates produced by Andritz in 2009.
The Stabilization of the Pulping Process by Introducing the Pulp Machine
Kishu Mill, Hokuetsu Kishu Paper Co., Ltd.
The production of the pulping process (KP) in Kishu mill had depended on the pulp demand of the paper machines. So that the production had so much fluctuated because of grade change, shut down, paper break, and so on, and that given negative effects to the pulping process. In order to solve this issue, we installed the pulp machine. Now, this one works as a buffer. Thanks to the pulp machine, the pulping process is able to keep the constant production despite the pulp demand of the paper machines.
In this paper, we introduce the outline of the new pulp machine and the positive effect from that.
Innovative Glossy Newsprint − PremiumNews −
Hideyuki Yokouchi, Manabu Yamamoto, Kunihiko Watanabe and Yuichiro Ohtsu
Oji Paper Co., Ltd.
PremiumNews, an innovative product for newsprint, is the worldfs first glossy newsprint paper for high speed web offset printing presses without dryers. Generally, coated papers and supercalendered papers are not applied to newsprint presses without dryers due to the slow drying of the ink, and it was thought to be impossible to achieve a glossy, clean print finish with newsprint. However, we started to develop the worldfs first glossy newsprint in a joint project with Asahi Printech, Asahi Shimbun, and Sakata Inx. After overcoming many challenges, we finally found a way to manufacture glossy newsprint with a clean finish by optimizing both the coating (through pigment selection) and the base paper. In addition, Frequency-Modulation screening plates and high consistency ink contribute to further improve the clean finish by reducing the amount of ink required. Consequently we have succeeded in manufacturing glossy newsprint, gPremiumNewsh, on a commercial basis.
Development of Ultra-Light Weight Coated Paper
− New Entry into North American Market −
Masanori Kawashima and Fuminari Nonomura
Pulp and Paper Research Laboratory, Nippon Paper Industries Co., Ltd.
We aimed to enter into North American Market in the field of coated paper, especially in ultra-light weight coated paper. The target area is West Coast of North America, where there are very few competitional paper makers. We tried to make sales to major publishers in North America. These major publishers are said to have their severe quality demands against coated paper supplier. Because of this, once we started to make sales to major publishers after passing their demands in coated paper quality, it should be a powerful anouncement and advertising effects for other publishers and printers. During our new development of ultra-light weight coated paper, we found that basis weight, opacity and printabilty for high speed printing are the most important factors for this kind of paper. This report will introduce the outline of our development in ultra-light weight coated paper for new entry into North American Market.
FillerTEK Technology Offers New Approach to Increasing Filler Content in Papers
Pulp & Paper Marketing, Katayama Nalco Inc.
Zhi Peng Yu
Nalco (China) Environmental Solutions Co., Ltd., Shanghai, China
Nalco Company, Naperville, IL, USA
Nalco Finland Services Oy, Helsinki, Finland
FillerTEK technology from Nalco allows papermakers to increase the sheet ash content up to 5 points without compromising quality of their product and operations. At the same time, the drying energy is substantially reduced. This technology combines several aspects of chemical and mechanical approaches to make higher filler content achievable while maintaining strength and printability. Increased content of engineered filler substitutes expensive fiber furnish at a fraction of the cost, saves drying energy costs and increases a millfs profitability. FillerTEK technology is based on minimizing the interference with the fiber-to-fiber bonding strength network.
The technology is designed to work for calcium carbonate filler types used for wet end addition. Controlled size distribution and excellent stability of filler flocs provides strength, while other sheet and printing properties are well maintained.
The treatment of fresh filler is done directly in the process with no holding time required before use and with minimal adjustments to wet-end and paper making processes. This filler preflocculation technology has been successfully demonstrated in various pilot paper machine and commercial machine trials, resulting in several global references. In this paper, the results from a commercial application are presented.
Precise Design Retention System for Papermaking
Jiayi Chen, Takashi Saigusa, Yasuhiro Kagawa, Keiji Suruga and Toshihito Uchida
Kurita Water Industries Ltd.
It is a common subject to keep the balance between good formation and high level of first pass retention, especially first pass ash retention for cost down, energy and natural resource saving. To obtain a high performance of retention system, the actual conditions, such as types of paper machine, sorts of paper product should be considered. Not only characteristics of individual polymer, but also their combination is very important for design the system. This paper illustrates with examples, the relationship between the amount of cationic group in PAM and content of calcium carbonate in furnish etc. It also gives an assessment of different retention system by using DFS, DDA, and Flocky Tester. The results show that the newly developed retention system, which is consist of cationic PAM and anionic PAM, is both in high ash retention and low volume of Flocky Test, foresighted a good formation.
Introduction of the Power Offer Business through the Pulp and Paper Green Transformation Program in Canada
Daishowa-Marubeni International Ltd.
iContact InformationjNippon Paper Industries Co.,Ltd.
In June 2009, Canadian government announced gPulp and Paper Green Transformation Program (PPGTP)h in order to bail out the pulp and paper companies under critical condition and to promote transformation to the green energy production. With the government subsidies funded under PPGTP, gDaishowa-Marubeni International (DMI)h will enter the power offer business in 2012.
This paper describes the outline of the PPGTP, the power market in western Canada and the power offer business of our mills.
Introduction to GS Paper & Packaging Sdn Bhd in Malaysia
GS Paper & Packaging Sdn Bhd
iContact InformationjYuichiro Hayashi
Oji Paperboard Co.,Ltd.
GS Paper & Packaging Sdn Bhd (hereinafter called GSPP ) was established by Genting Sanyen Group as one of its local businesses in 1990, and now has supplied high-quality corrugated paper and carton boxes with the greatest share in Malaysia. GSPP joined Oji Group in April 2010, and had become joint venture with Marubeni Co., Ltd. since August 2010.
GSPP has one paper mill and two packaging plants. The paper mill and one of the packaging plants are located near Kuala Lumpur International Airport. Another packaging plant is located in Penang, one of the states in northern Malaysia.
GSPP produces about 300,000 tons of board paper and 200,000,000 square meters of corrugated sheets per year.
This draft outlines the business and facilities of GSPP.
Establishment of Acid-Free Technology for Coated Paper in Hachinohe Mill |Latter Part|
Research team for acid-free paper technology in Hachinohe mill
Hachinohe Mill, Mitsubishi Paper Mills Ltd.
From First Part |
In recent years, most of the printing paper is acid-free paper produced in neutral or weakly basic condition, and it is more difficult to find the acidic paper in the market.
In addition, even newsprints read every morning are also becoming acid-free paper in Japan.
In 1980s, the deterioration of books in libraries gain the attention of the public worldwide, and minimization of the sulfate radical which made the printing paper deteriorated and shift to acid-free paper which have the excellent self life were required also in Japan.
At that point, some special paper had already been acid-free but most general printing paper was still in the predawn to acid-free in Japan.
Mitsubishi Paper Mills Ltd was not the first paper mill to start development of acid-free paper in the market. However, we combined acid-free paper making and high solid content coating as the project according to the beneficial information of experience and knowledge in both North America and Europe, and this combination could made the whole plant promptly converted to the acid-free system, and the project finalized. As the result, high-quality acid-free paper and coated acid-free paper could be quick commercialized in Nakagawa mill and in Hachinohe mill respectively.
Since approximately 30 years after the first mill trial of acid-free paper and more than 20 years after completion of acid-free system have passed, the background and technical approach on development of acid-free paper mainly for coated paper in Hachinohe mill at that point is here reported with the aim of technical succession and conservation.
Report on the Results of the Fiscal 2011 Follow-up Survey on JPAfs Committed Action Plan and Efforts against Global Warming in the Japanese Pulp and Paper Industry
Japan Paper Association
The Japan Paper Association (JPA) has been actively working to save energy since 1997 when it established its gCommitted Action Plan on Environmenth. JPA declares its policy of restraining CO2 emissions in the action plan, and is working toward the following targets revised in September 2007:
EOn a five-year average basis from fiscal 2008 to fiscal 2012, reduce fossil energy consumption per unit and fossil energy derived CO2 emission per unit by 20% and 16% from the level of fiscal 1990, respectively
EBy fiscal 2012, expand forest plantation area owned or managed by the industry at home and abroad to 700 thousand hectares.
Since fiscal year 1990, JPA has made a survey on the actual results of energy consumption in the year, published its results compared with that in fiscal year 1990. This report shows the results for fiscal year 2010, the position of the pulp and paper industry in national energy consumption and CO2 emissions, revision of JPAfs Action Plan for low-carbon society in response to the Great East Japan Earthquake, outline of the special measures bill on renewable energy, and current trend of the revision in Energy Saving Act.
A Report on 2011 TAPPI International Conference on Nanotechnology for Renewable Materials
NPi Reserch Laboratory, Nippon Paper Industries Co., Ltd.
2011 TAPPI International Conference on Nanotechnology for Renewable Materials was held in Arlington, Virginia USA on 6-8 June, 2011 hosted by TAPPI. Total participants were about 190 people. And 76 oral presentations and 17 poster sessions were conducted with 6 key note presentations. Summaries of several presentations are described.
Individuality Evaluation for Paper Based Artifact-Metrics Using Infrared Transmitted Light Image
Manabu Yamakoshi and Junichi Tanaka
Research Institute, National Printing Bureau
Graduate School of Environment and Information Sciences, Yokohama National University
Artifact-metrics is a technique to authenticate an artifact based on a measurable intrinsic characteristic made during the manufacturing process. The intrinsic physical feature can be hardly controlled and copied even for a legal manufacturer, so can be used as an anti-counterfeit feature in the artifact. One of the most important requirements for intrinsic characteristic for artifact-metrics is individuality. It requires that the intrinsic characteristic of each artifact sufficiently differs. It keeps the artifact-metric system resistant to brute force attack. A transmitted light image of paper can be used for artifact-metrics, since the fiber distribution of paper is random.
In this paper, we investigate FMR/FNMR curves as results for matching tests using several paper varieties and matching size of sample with the transmitted light image of paper. Through a matching method based on line segments for the test using sheets of recycled paper, we found estimated EER of under 10-20 of EER. It was conformed that the transmitted light image of recycled paper has a sufficient individuality for the artifact-metrics.