Methods to improve the uniformity of a coating wet and to coat a sheet contu00ecnua in motion processing station, and apparatus for coating.

摘要

Methods to improve the uniformity of a coating wet and to coat a sheet contu00ecnua in motion processing station, and apparatus for coating ".A sufficient number of devices to pick and place (for example, rolls) (162 - 167), whose periods of contact with a substrate are equal or substantially equal to each other.To form a uniform coating free from void, continuous, despite the occurrence of outbreaks, depressions and voids of the caliber of intentional or unintentional coatings.The surfaces umectadas devices are placed in contact, and again in contact with the coating of the substrate in positions, which are different from one another.Extremely uniform and extremely thin coatings can be obtained at very high rates of speed.The devices to take and place facilitate drying and reduce the sensitivity of drying ovens to the size of outbreaks of the coating.The equipment containing the devices to take and place is easy to be built, prepared and operated.And it can be easily adjusted to change the thickness of the coating and offset as the size of the coating.