Patent ID: 6479107
Filing Date: 2002-11-12
Classification: B05C,G03C

Abstract:
A coating method in which a running web is coated with a plurality of coating liquids by a slide hopper coating apparatus with a slide surface on which the plurality of coating liquids flow down to form a plurality of coating layers on the web, wherein:at least two of the plurality of coating liquids form a bottom layer and a layer next to the bottom layer with respect to the slide surface, and each of the bottom layer and layer next to the bottom layer contain gelatin; a gelatin concentration of the coating liquid for the bottom layer is set to be lower than a gelatin concentration of the coating liquid for the layer next to the bottom layer by at least 2 points in percentage by weight; and the plurality of coating liquids are prepared such that a ratio A/B is not less than 0.05 and not more than 0.2 and a ratio C/D is not less than 0.2 and not more than 0.67, where A is a flow amount per width of the coating liquid for the bottom layer on the slide surface, B is a flow amount per width of the whole of the plurality of coating liquids on the slide surface, C is a viscosity of the coating liquid for the bottom layer, and D is a viscosity of the coating liquid for the layer next to the bottom.