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METHOD FOR REDUCING MOTTLE IN COATING A SUPPORT WITH A LIQUID COATING COMPOSITION
METHOD FOR REDUCING MOTTLE IN COATING A SUPPORT WITH A LIQUID COATING COMPOSITION
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机译：在液体涂料组合物中减少支撑涂层中的油滴的方法
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METHOD FOR REDUCING MOTTLE IN COATINGA SUPPORT WITH A LIQUID COATING COMPOSITIONAbstract of the DisclosureIn coating a support, such as a flexible web ofsynthetic organic polymer, with a coating compositioncomprising a film-forming material in a liquid vehicle, atleast two of (1) the temperature of the atmosphere in thecoating zone, (2) the temperature of the coating compositionat the point where it is coated on the support, and (3) thetemperature of the support at the point where the coatingcomposition is applied thereto, are maintained at a tempera-ture substantially equivalent to the equilibrium surfacetemperature of the coated layer within the coating zone.This minimizes thermal gradients within the coated layerand significantly reduces the formation of mottle andsimilar coating defects. The method is especially usefulin the coating of organic solvent solutions of polymericresins and finds particular application in the manufactureof photographic elements.-1-
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