Patent ID: 6190745
Filing Date: 2001-02-20
Classification: B05D,C23C,F02F,Y10T

Abstract:
A product comprising a substrate having a gelled powder coating on selected portions thereof made by a process for powder coating selected portions of a substrate using a powder transfer member, comprising the steps ofelectrostatically applying a uniform and controlled thickness of a powder to an entire surface of a transfer member to form a powder coating thereon,said powder having a gel point, the temperature at which the powder turns into a gel,heating a substrate to a temperature above the gel point of the powder,said substrate having selected raised portions which are to be coated with the powder,pressing only the selected raised portions of the heated substrate against the powder coating of the transfer member to melt the powder coating on the transfer member and cause direct contact between the selected raised portions of the substrate and the melted powder to cause this melted powder to stick to the selected raised portions of the substrate and coat only the selected raised portions of the substrate,and polymerizing and curing the coated selected raised portions of the substrate to fix the melted powder to the substrate, thereby forming a product with a gelled powder coating, said powder being cooled from a hot gel.