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首页> 外文期刊>JCT research >Visualization study of liquid surface stability for full reverse 3-roll coater with rigid gravure roll
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Visualization study of liquid surface stability for full reverse 3-roll coater with rigid gravure roll

机译：刚性凹版辊全反向三辊涂布机液体表面稳定性的可视化研究

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摘要

Roll coating systems are widely used to coat a thin liquid layer on a moving substrate, and many publications discussing forward roll coating systems and reverse gap control coating systems are available. Recently, thinner and more uniform layers are required for use with the high-performance solutions involved. Moreover, high line speed coating is also required in order to reduce manufacturing costs. A reverse gravure roll system can coat a thin layer film at high line speed more easily than a flat roll coating system because only the liquid that enters the gravure cell is transferred to the next roll or substrate. However, the existence of the gravure cell complicates the flow between the rolls. To our knowledge, no systematic study in the literature has explored this condition in depth. In the present study, the flow between a reverse deformable roll and a solid stainless steel gravure roll is visualized in order to determine how the uniformity of coating in the high roll speed region is affected by operating parameters, that is, the speed ratio between the rolls and the properties of the coating liquid. The range for coating uniformity is compared with the case of a gap control system. The results show that the stable region can be extended by using the reverse gravure roll system.
机译：辊涂系统被广泛用于在移动的基材上涂覆薄的液体层，并且有许多出版物讨论正向辊涂系统和反向间隙控制涂层系统。最近，需要更薄，更均匀的层才能与所涉及的高性能解决方案一起使用。此外，还需要高线速涂布以降低制造成本。反向凹版印刷辊系统比平版辊涂系统更容易以高线速度涂覆薄膜，因为只有进入凹版印刷机的液体才转移到下一个辊或基材上。但是，凹版印刷单元的存在使辊之间的流动复杂化。据我们所知，文献中没有系统的研究深入探讨过这种情况。在本研究中，可视化可逆变形辊与实心不锈钢凹版辊之间的流动，以便确定高辊速区域中涂层的均匀性如何受到操作参数（即，辊之间的速度比）的影响。辊和涂料液的性能。将涂层均匀性的范围与间隙控制系统的情况进行比较。结果表明，使用反向凹版辊系统可以扩展稳定区域。

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  • 来源
    《JCT research》 |2014年第1期|39-46|共8页
  • 作者

    Hirokazu Kobayashi; Masato Sasaki;

  • 作者单位

    Rolling and Processing Research Department, Steel Research Laboratory, JFE Steel Corporation, 1 Mizushima Kawasaki-dori, Kurashiki-shi, Okayama 712-8511, Japan;

    Rolling and Processing Research Department, Steel Research Laboratory, JFE Steel Corporation, 1 Kokancho,Fukuyama, Hiroshima 721-8510, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gravure roll; Reverse roll; Ribbing; Visualization;

    机译：凹版辊;反转辊肋条;可视化;

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