Improvement of DIP by Optimization in Process Control

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  • Ito Yoshio
    Chuetsu Pulp and Paper Co., Ltd., Takaoka Mill (Nomachi)

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Other Title
  • ＤＩＰ工程の最適化における品質改善
  • DIP コウテイ ノ サイテキカ ニ オケル ヒンシツ カイゼン

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Abstract

Collection of waste-paper and its recycling rate have been going up year after year in order to establish an ecological society here in Japan. The recent trend toward environmental preservation has spoiled a balance between demand and supply of waste paper. There is no other choice but to use a poor quality waste paper for recycling, according to the boost in domestic market price due to increasing exports for waste paper. Under these circumstances, quality problems have been increasingly caused by dirt such as stickies and plastic films residual inks from the inferior waste paper during DIP process.<BR>Deinked pulp contains many types of paper products at Noumati in Takaoka MiLL, while strong demand for higher quality product is rising in the market. This report described our effort to reduce obstacles in DIP production process to satisfy the strict market demand.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 62 (7), 850-853, 2008

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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