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    • 26. 发明授权
    • Method and apparatus for curtain coating
    • 帘式涂布方法和装置
    • US07101592B2
    • 2006-09-05
    • US10496997
    • 2002-12-12
    • Markus GueggiSedat Varli
    • Markus GueggiSedat Varli
    • B05D1/30B05C5/00
    • G03C1/74B05C5/008B05C9/06B05D1/305B05D3/042D21H23/30D21H23/48Y10S118/04
    • In a method and an apparatus for curtain coating of a moved substrate like a paper web substrate is moved below a liquid supply means providing a single or multilayer liquid coating in the form of a free-falling curtain impinging the substrate at a dynamic wetting line and a blade or air shield located upstream of the dynamic wetting line with respect to the moving direction of the substrate. The dynamic wetting line of the coating curtain on the substrate or web is oriented generally perpendicular to the moving direction of the substrate or web, providing substantially the same air pressure over an essential part of the coating curtain on its front and back side with respect to the moving direction of the substrate and providing a first supply air flow upstream to the wetting line. The supply air flows over a substantial length along the free-falling curtain and evacuates air from a location upstream of the supply air flow so that the air near the dynamic wetting line is moved against the moving direction of the substrate web and the boundary air layer entrained to the substrate. A second supply air is provided in proximity to the wetting line.
    • 在诸如纸幅基板的移动的基板的帘式涂布的方法和装置中移动到液体供应装置下方,该液体供应装置提供以自由下落的窗帘的形式的单层或多层液体涂层,该基材在动态润湿线上冲击基板, 相对于基板的移动方向位于动态润湿线的上游的刀片或空气屏蔽。 基底或腹板上的涂层窗帘的动态润湿线大致垂直于衬底或织物的移动方向定向,从而相对于涂覆帘幕的正面和背面的主要部分提供基本相同的空气压力 衬底的移动方向并在润湿线上游提供第一供应气流。 供应空气沿着自由落下的窗帘流过相当长的长度,并从供气管道上游的位置排出空气,使得动态润湿管线附近的空气抵抗衬底腹板和边界空气层的移动方向移动 夹带在基材上。 靠近润湿线设置第二供给空气。