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US 5,690,995 AGranted
Spray booth for powder coating
AssigneeGema Volstatic AG
InventorsGallus Fischli, Silvano Gelain, Markus Lenherr
Life of this patent
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AssigneeGema Volstatic AG
InventorsGallus Fischli, Silvano Gelain, Markus Lenherr
Estimating the term…
A spray booth for use in the spray coating of articles with coating powder. The spray booth forms a coating space which at a bottom is bounded by powder collection means. The powder collection means is divided into an inner collection means and a surrounding outer collection means for the separate collection of surplus powder and the separate removal of the entire surplus powder from the booth. The outer collection means collects surplus coating powder dropping off the inside surfaces of the booth walls. Since this powder may be contaminated with different color or different types of powder from previous spraying operations, it is discarded as waste. The inner collection means collects pure surplus powder which has not touched the booth wall surfaces. This pure surplus powder is recycled.
A spray coating booth for use in spray coating articles with powder, said booth containing a side wall which surrounds the perimeter of the booth to define and enclose a coating space, and a floor connected to said side wall and forming a bottom for the coating space, said floor including an outer collection means arranged around the perimeter of said booth and along said side wall to collect and remove surplus powder dropped onto said floor along said side wall, and an inner collection means positioned on said floor and spaced interiorly of said side wall to collect and remove surplus powder dropping onto said floor interiorly of said side wall, where surplus powder dropping around the perimeter of said booth and along said side wall is collected by said outer collection means, and surplus powder dropping interiorly of said side wall is simultaneously collected by said inner collection means, thereby enabling a separation of the surplus powder dropping on the interior of said floor from the surplus powder dropping on said floor near the side wall so that the surplus powder collected by said inner collection means can be reused.
A method of spray coating articles with powder from a spray booth, said booth containing a side wall which surrounds the perimeter of the booth to define and enclose a coating space, and a floor connected to said side wall and forming a bottom for the coating space, said floor including an outer collection means arranged around the perimeter of said booth and along said side wall to collect and remove surplus powder dropped onto said floor along said side wall, and an inner collection means positioned on said floor and spaced interiorly of said side wall to collect and remove surplus powder dropping onto said floor interiorly of said side wall, comprising spray coating articles with the powder in the booth with a coating means, collecting surplus powder dropping around the perimeter of said booth and near said side wall with said outer collection means, and simultaneously collecting surplus powder dropping interiorly of said side wall with said inner collection means, thereby separating the surplus powder dropping on the interior of said floor from the surplus powder dropping on said floor around the perimeter of said booth along the side wall so that the surplus powder collected by said inner collection means can be reclaimed.
Dependencies are inferred from the claim text.