Patent ID: 6881436
Filing Date: 2005-04-19
Classification: B05B,Y02P

Abstract:
1. A method of recycling aqueous paint, comprising: in a recycling system having using a water curtain in said coating booth to collect over-spray paint that does not adhere to said article; passing said over-spray paint and water of said water curtain into said booth circulation water bath so as to convey a mixture of said over-spray paint and water into said condensation bath; using said ultra-filtration apparatus to separate said mixture into condensed paint and filtrate; conveying said condensed paint into said paint tank; if necessary, removing said condensed paint from said paint tank for adjustment thereof and using this adjusted condensed paint for aqueous paint to coat an article; storing booth circulation water in said settling tank; storing a portion of said filtrate in said rinse tank; conveying said portion of said filtrate from said rinse tank into said ultra-filtration apparatus so as to rinse said ultra-filtration apparatus; and controlling to be constant during the spray-coating of said article with said aqueous paint, a sum of Vw+Vx+Vy+Vz+Vs+Vt, with Vw being equal to a volume of water in said booth circulation water bath, Vx being equal to a volume of said filtrate not in said rinse tank, Vy being equal to a volume of said mixture of said over-spray paint and water that is within said condensation bath, Vz being equal to a volume of said condensed paint in said paint tank, Vs being equal to said booth circulation water in said settling tank and Vt being equal to a volume of said portion of said filtrate in said rinse tank.