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1. 发明授权

US06720025B2 Slot extrusion coating methods 有权
标题翻译：槽挤出涂布方法
公开(公告)号：US06720025B2
公开(公告)日：2004-04-13
申请号：US10186809
申请日：2002-07-01
申请人： Robert A. Yapel , Wayne P. Ray , David J. Scanlan , Larry A. Lien , Charles W. Simpson
发明人： Robert A. Yapel , Wayne P. Ray , David J. Scanlan , Larry A. Lien , Charles W. Simpson
IPC分类号： B08D126
CPC分类号： B05D1/265 , B05D2601/00 , B05D2602/00
摘要： A method of slot extrusion coating is provided that can be used to apply thin coatings using liquid compositions having high percent solids. A window of operability advantageously identifies the limits of a process to provide these thin high solids coatings. The window of operability is determined by obtaining a first graphical curve representing actual values of wet thickness as a function of percent solids level. The critical wet thickness is then identified on the first graphical curve. The window of operability is identified as an area defined by the boundaries: percent solids greater than the point at which critical wet thickness occurs, an actual wet thickness greater than all points above the first graphical curve and equal to or less than the critical thickness.
摘要翻译：提供了一种槽挤出涂覆方法，其可用于使用具有高固体含量的液体组合物来施加薄涂层。可操作性的窗口有利地识别了提供这些薄的高固体涂层的工艺的极限。通过获得表示作为固体含量百分比的函数的湿厚度的实际值的第一图形曲线来确定可操作性的窗口。然后在第一个图形曲线上确定临界湿度厚度。可操作性的窗口被确定为由边界定义的区域：固体百分数大于发生临界湿厚度的点，实际湿度厚度大于第一图形曲线上方的所有点并且等于或小于临界厚度。

2. 发明授权

US5906862A Apparatus and method for drying a coating on a substrate 失效
标题翻译：用于干燥基材上的涂层的装置和方法
公开(公告)号：US5906862A
公开(公告)日：1999-05-25
申请号：US831248
申请日：1997-04-02
申请人： Robert A. Yapel , Omar D. Brown , Wayne P. Ray , Daniel V. Norton , Bernard A. Scheller , Manley C. Marcellus
发明人： Robert A. Yapel , Omar D. Brown , Wayne P. Ray , Daniel V. Norton , Bernard A. Scheller , Manley C. Marcellus
IPC分类号： B05D3/04 , F26B13/10 , G03F7/16 , B05D3/02
CPC分类号： F26B13/10 , B05D3/0413 , G03F7/168
摘要： A method and apparatus for coating and drying coated substrates without introducing significant surface imperfections while running at higher web speeds than known drying methods. The substrate is preferably coated within the drying enclosure or the coating bead may form a closure at the entrance of the drying enclosure. The substrate is moved through a first drying enclosure along a first axis. The first drying enclosure is substantially isolated from an external environment. A first low velocity, substantially laminar flow field of a drying gas is directed across the front surface of the substrate. The first flow field is generally parallel to the front surface and generally perpendicular to the first axis to minimize the formation of surface imperfections during the evaporation of the coating solvent. The substrate may then be moved to subsequent drying enclosures through transition enclosures that minimize surface imperfections due to high velocity interaction between the adjacent drying enclosures. In embodiments where the first axis is in an inclined configuration with respect to horizontal, louvers may be utilized for directing solvent evolving from the substrate to minimize surface imperfections due to solvent cascade.
摘要翻译：一种用于涂覆和干燥涂覆的基材的方法和装置，而不是在比已知的干燥方法更高的纸幅速度下运行时引入显着的表面缺陷。基底优选地涂覆在干燥外壳内，或者涂覆珠可以在干燥外壳的入口处形成封闭件。衬底沿着第一轴线移动通过第一干燥箱。第一干燥箱基本上与外部环境隔离。干燥气体的第一低速，基本层流场被引导穿过衬底的前表面。第一流场通常平行于前表面并且大致垂直于第一轴线，以最小化涂层溶剂蒸发期间表面缺陷的形成。然后可以将衬底移动到随后的干燥封闭件中，通过过渡封闭件使由于相邻干燥封壳之间的高速度相互作用而导致的表面缺陷最小化。在第一轴线相对于水平方向呈倾斜形状的实施例中，百叶窗可用于引导从衬底放出的溶剂，以使由于溶剂级联引起的表面缺陷最小化。

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