Patent ID: 6716286
Filing Date: 2004-04-06
Classification: B05C,B05D

Abstract:
An apparatus for applying a coating fluid onto a substrate having relative longitudinal movement with respect to the apparatus, wherein the substrate has a first surface on the first side thereof and a second surface on a second side thereof, and wherein the apparatus comprises:means for dispensing a stream of coating fluid onto the first surface of the substrate to form a fluid wetting line along a laterally disposed fluid contact area; and an electrical field applicator extending laterally across the second side of the substrate and aligned generally opposite the fluid wetting line on the first surface of the substrate to bear electrical charges and apply an effective electrostatic field at a location on the substrate that is substantially at and downstream of the fluid wetting line, the effective electrostatic field defining a main attractive electrical force in order to attract the fluid to the first surface of the substrate, wherein the electrical charaes which may reside on the second surface of the substrate do not constitute the main attractive electrical force.