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US 2002/0000191 A1Published application
Recycling system of aqueous paint
OwnerTsuyoshi Yamaneinventor
Life of this patent
Estimating the term…
Abstract
The present invention provides recycling system of an aqueous paint in which number of required apparatuses or equipments can decrease when two or more aqueous paint having different paint colors are used in the recycling system for a same aqueous paint. In the recycling system, over-spray paints are collected group by group according to a classification based on identity of combinations of pigments contained in said aqueous paints.
Claims6
Recycling system of an aqueous paint comprising;
- coating an aqueous paint having a paint color that is toned with two or more original color aqueous paints in a water-curtain-type coating booth, collecting an over-spray paint that does not adhere with an article to be coated in a booth circulation water bath,
- separating and concentrating the over-spray paint by ultrafiltration equipment to store as a concentrated paint in a concentration bath, and taking out said concentrated paint when it is used and toning color to reuse, wherein, when two or more aqueous paints having different paint colors are coated, in the recycling system said over-spray paints are collected group by group according to a classification based on identity of combinations of pigments contained in said aqueous paints, separated and concentrated to store, so as to provide with smaller number of booth circulation water baths, ultrafiltration equipments, concentration baths and filtration baths than paint colors of aqueous paints.
Process for reusing an aqueous paint comprising;
- coating an aqueous paint having a paint color that is toned with two or more original color aqueous paints in a water-curtain-type coating booth, collecting an over-spray paint that does not adhere with an article to be coated in a booth circulation water bath,
- separating and concentrating the over-spray paint by ultrafiltration equipment to store as a concentrated paint in a concentration bath, and taking out said concentrated paint when it is used and toning color to reuse, wherein, when two or more aqueous paint having different paint colors are coated in the recycling system, said over-spray paints are collected group by group according to a classification based on identity of combinations of pigments contained in said aqueous paints, separated and concentrated to store.
Dependencies are inferred from the claim text.