Novel Chemical Solution for Increasing Ash in Paper

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  • 紙の高灰分化に向けての新規薬品処方
  • カミ ノ コウカイブンカ ニ ムケテ ノ シンキ ヤクヒン ショホウ

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Recently, the domestic demand for paper and paperboard has remained almost the same. Although the society is shifting to paperless, printing and communication paper still plays an important role as information media. Usually, inorganic particles called fillers such as talc, calcium carbonate, and etc. are added to printing and communication paper to improve printability and optical properties. Especially, calcium carbonate is widely used, and its dosage to paper gradually increases due to its excellent performance and cost effectiveness in papermaking industry.<BR>A lot of paper mills take great advantages of using calcium carbonate. However, the problem of strength loss would become serious as the dosage of calcium carbonate increases. To provide solutions for such problem, we have developed “surface-treatment agent for calcium carbonate”. It is a novel wet-end chemical that was created by combining new materials with our polymerization technology. It is applied to the slurry of calcium carbonate, and can improve the strength loss of paper caused by calcium carbonate.<BR>When calcium carbonate was used with our “surface-treatment agent for calcium carbonate”, the strength loss was reduced compared to untreated calcium carbonate. Moreover, it was found that it can enhance the performance of wet-end chemicals such as dry strength agents. It is expected that it enables paper mills to increase calcium carbonate further.<BR>We introduce our “surface-treatment agent for calcium carbonate” and how to use it along with the trial results.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 68 (11), 1257-1261, 2014

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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