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公开(公告)号：US5391401A
公开(公告)日：1995-02-21
申请号：US78280
申请日：1993-06-17
CPC分类号： B05D1/305 , G03C1/74 , G03C2001/7433 , G03C2001/7462 , Y10S118/04
摘要： In curtain coating, uniform layer or layers are only obtained if the operational variables are held within precise limits. These limits define a "coating window". However, one of the boundaries of this "window" is governed by the occurrence of air-entrainment. Described herein is an improved coating process in which allows the "coating window" to be enlarged. This is achieved by using a material adjacent the support on to which the liquid material is to be coated which readily shear-thins.
摘要翻译： PCT No.PCT / EP91 / 02414 Sec。 371日期：1993年6月17日 102（e）日期1993年6月17日PCT 1991年12月16日PCT PCT。 出版物WO92 / 11094 日期：1992年7月9日。在帘式涂层中，如果操作变量保持在精确限度内，则仅获得均匀的层或层。 这些限制定义了“涂层窗口”。 然而，这个“窗口”的界限之一是由于夹带气体的发生。 这里描述了一种改进的涂覆方法，其中允许“涂布窗”被扩大。 这是通过使用邻近载体的材料来实现的，液体材料将被涂覆在该载体上，其易于剪切。
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公开(公告)号：US6103313A
公开(公告)日：2000-08-15
申请号：US175640
申请日：1998-10-20
CPC分类号： G03C1/74 , B05C5/008 , B05D1/305 , Y10S118/04
摘要： A method for curtain coating various compositions at high speed onto a continuously moving receiving surface comprisesa) forming a composite layer of a plurality of coating compositions having density .rho. of total volumetric flow rate per unit width Q, forming a freely falling curtain from said composite layer, and impinging said freely falling curtain of height h against a continuously moving receiving surface such that the point of impingement has an application angle .theta.,b) providing said receiving surface with roughness, R.sub.z (DIN), between about 2 .mu.m and about 20 .mu.m,c) providing an electrostatic field at said impingement point whereby high coating speeds can be attained, andd) providing said coating composition forming the layer adjacent to said receiving surface with a viscosity measured at a shear rate of 10,000 s.sup.-1 sufficiently high that, when combined with said roughness R.sub.z, said curtain height h, said application angle .theta., said total volumetric flow rate per unit width Q, and said liquid density .rho., gives a value of specifying parameter .phi..sub.E that is greater than 1.
摘要翻译： 一种用于将各种组合物高速幕涂到连续移动的接收表面上的方法包括：a）形成具有每单位宽度Q的总体积流量密度rho的多个涂料组合物的复合层，从所述复合材料形成自由下落的窗帘 并且将高度h的自由下落的窗帘撞击在连续移动的接收表面上，使得冲击点具有施加角度θ，b）使所述接收表面的粗糙度Rz（DIN）在约2μm和约 20μm，c）在所述冲击点处提供静电场，从而可以获得高涂层速度，以及d）使所述涂料组合物形成邻近所述接收表面的层，其粘度在10,000s -1的剪切速率下测量 足够高，当与所述粗糙度Rz组合时，所述帘幕高度h，所述施加角度θ，每单位的总体积流量 宽度Q和所述液体密度rho给出指定参数phi E大于1的值。
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公开(公告)号：US6099913A
公开(公告)日：2000-08-08
申请号：US175519
申请日：1998-10-20
CPC分类号： G03C1/74 , B05C5/008 , B05D1/305 , Y10S118/04
摘要： A method for curtain coating various compositions at high speed onto a continuously moving receiving surface comprisesa) forming a composite layer of a plurality of coating compositions having density .rho. of total volumetric flow rate per unit width Q, forming a freely falling curtain from said composite layer, and impinging said freely falling curtain of height h against a continuously moving receiving surface such that the point of impingement has an application angle .theta.,b) providing said receiving surface with roughness, R.sub.z (DIN), between about 2 .mu.m and about 20 .mu.m, andc) providing said coating composition forming the layer adjacent to said receiving surface with a viscosity measured at a shear rate of 10,000 s.sup.-1 sufficiently high that, when combined with said roughness R.sub.z, said curtain height h, said application angle .theta., said total volumetric flow rate per unit width Q, and said minimum liquid density .rho., gives a value of specifying parameter .phi..sub.0 that is greater than 1, and point whereby high coating speeds can be attained.
摘要翻译： 一种用于将各种组合物高速幕涂到连续移动的接收表面上的方法包括：a）形成具有每单位宽度Q的总体积流量密度rho的多个涂料组合物的复合层，从所述复合材料形成自由下落的窗帘 并且将高度h的自由下落的窗帘撞击在连续移动的接收表面上，使得冲击点具有施加角度θ，b）使所述接收表面的粗糙度Rz（DIN）在约2μm和约 20μm，c）使所述涂层组合物形成邻近所述接收表面的层，其粘度在10,000s -1的剪切速率下测量得足够高，当与所述粗糙度Rz相结合时，所述帘幕高度h，所述应用 角度θ，每单位宽度Q的总体积流量以及所述最小液体密度rho给出指定参数phi 0的值更大的值 超过1，并且可以获得高涂层速度的点。
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