Establishment of Acid-Free Technology for Coated Paper in Hachinohe Mill

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  • 八戸工場における塗工紙中性紙化の技術確立（前編）
  • セイシ サンギョウ ギジュツ イサン ホゾン ・ ハッシン ハチノヘ コウジョウ ニ オケル トコウシ チュウセイシカ ノ ギジュツ カクリツ(ゼンペン)

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Abstract

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.<BR>In addition, even newsprints read every morning are also becoming acid-free paper in Japan.<BR>In 1980 s, 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.<BR>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.<BR>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.<BR>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.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 66 (3), 271-279, 2012

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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