Recycle system of aqueous paint

Abstract

The present invention is to provide a recycle system of aqueous paint, wherein material balance is kept by controlling liquid amount within the recycle system when spray-coating. The system comprises: coating an article to be coated with an aqueous paint in a water-curtain-type coating booth, collecting an over-spray paint that does not adhere with the article by water-curtain, sending the collected solution to a condensation bath through a booth circulation water bath, separating it by a ultrafiltration apparatus into condensed paint and filtrate, the condensed paint being transferred to a paint tank, and taking the condensed paint out of the paint tank if necessary to adjust, followed by coating it as an aqueous paint, wherein a total amount of liquid present within the recycle system is controlled constant during spray-coating.

Dependencies are inferred from the claim text.