Release Agent for Press Rolls

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Other Title
  • プレスロール用剥離剤について
  • プレスロールヨウ ハクリザイ ニ ツイテ

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Abstract

Deposition of pitch or fine fiber on the press rolls causes defects in the sheet, sheet breaks and fiber rising. Especially for high speed PMs (more than 1, 200mpm), sheet release from the rolls is not only limiting their speed but also giving strong impact to paper quality.<BR>Cationic polymer has been generally used to keep the roll surface clean, however, those program are not able to reduce draw and fiber rising effectively. Our technology, a continuous application of chemical additives (Wax based emulsion, On PressTM) directly onto press rolls treats surface and establishes a protective coating that prevents deposit buildup.<BR>In addition to preventing deposition and linting on the press rolls, this new technology enables mills to increase PM speed and/or improve paper quality. In this report, basic mechanism of the roll release is explained and case histories to various grades paper M/C are presented.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 57 (11), 1597-1601,013, 2003

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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