Method for recycling aqueous paint

Material balance is maintained in a recycling system for aqueous paint by controlling a liquid amount within the recycling system while spray-coating an article. A recycling method includes: coating an article with aqueous paint in a water-curtain-type coating booth; collecting an over-spray paint,...

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Bibliographische Detailangaben
Hauptverfasser:	OHTSU TAKAHITO, SUEYOSHI JUNICHI, YAMANE TSUYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS NOZZLES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SEPARATION SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	Material balance is maintained in a recycling system for aqueous paint by controlling a liquid amount within the recycling system while spray-coating an article. A recycling method includes: coating an article with aqueous paint in a water-curtain-type coating booth; collecting an over-spray paint, that does not adhere to the article, by virtue of a water curtain; sending a collected solution of paint and water to a condensation bath through a booth circulation water bath; separating this solution by an ultra-filtration apparatus into condensed paint and filtrate, with the condensed paint being transferred to a paint tank; and removing condensed paint from the paint tank, if necessary for adjustment of aqueous paint, followed by coating this aqueous paint onto an article, wherein a total amount of liquid present within the recycling system is controlled to be constant during spray-coating of an article.