• 제목/요약/키워드: 탈묵

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탈묵제에 따른 탈묵 펄프의 강도적 성질에 대한 연구 (A Study of strength properties of Deinked pulp according to deinking agents)

  • 손성민;김성빈;김현성
    • 한국인쇄학회지
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    • 제18권1호
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    • pp.95-102
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    • 2000

  • This paper presents the second part of a study of deinking using wort. Physical properties of deinked pulps such as tensile strength, bursting strength and tearing resistance were investigated. In order to analyze the properties, the fiber length and coarseness of deinked pulp was also measured. Results of deinking experiments showed that the deinking efficiency of enzyme treatments was higher than that of chemical treatments in strength properties such as tensile strength, bursting strength and tearing resistance on the the whole. we think that the reason why is that the fiber length and coarseness of deinked pulp with wort are more increased and decreased than those of deinked pulp with chemicals individually.

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플렉소 잉크가 포함된 신문고지의 중성 탈묵 -중성 탈묵제의 효율 평가- (Neutral Deinking of Old Newsprints Contaminated with Flexo Ink -Evaluation of the Deinking Efficiency of Two Neutral Deinking Agents-)

  • 이학래;류훈
    • 펄프종이기술
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    • 제33권1호
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    • pp.8-15
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    • 2001

  • Presence of small amount of old newsprints printed with waterbased flexographic inks leads to a significant loss brightness of the deinked pulp by flotation process. Recently there has been an increased interest in employing neutral deinking processes to solve the problems associated with waterbased flexo ink. A comparative experimental study was performed to evaluate the efficiency of neutral deinking and conventional alkaline deinking for ONP furnishes contaminated with flexo ink. It was shown that neutral deinking provides significant improvements in brightness, yield and freeness as compared with alkaline deinking. Flotation efficiency was different depending upon the type of surfactants used in neutral deinking. The result of this study showed that alcohol type surfactant is superior to fatty acid type surfactant in neutral deinking efficiency.

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