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a The problem of uniformity in wettability of coated surfaces is well known. As a result of this problem, it is often necessary to coat both sides of a substrate. Moreover, the substrates may be coated using one of two or more different coating solutions. This causes problems of uniformity of the coated surfaces.
An example of this problem is illustrated in U.S. Pat. No. 5,454,646, issued to Ralston, Jr. and entitled "Coatings Having Uniform, Smooth Surfaces", which relates to a process of making an interior or an exterior automotive or truck finish which exhibits improved adhesion and finish characteristics. The process of making such
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