Patent ID: 6024797
Filing Date: 2000-02-15
Classification: B05C,D21H

Abstract:
A coating applicator for applying coating material to a moving substrate along a direction of travel said apparatus comprising:a housing having a coating inlet for receiving a fluid coating material;a static converging wedge mounted to the housing downstream from the coating inlet for directing the flow of fluid coating material against a moving substrate;an overflow outlet upstream from the coating inlet for draining fluid coating material that does not flow through the static converging wedge;a dynamic converging wedge downstream from the static converging wedge for directing fluid coating material against the moving substrate; anda plurality of regional extraction ports arrayed in a cross-machine direction for selectively draining fluid coating material from an upstream side of the dynamic converging wedgea coater scanning device downstream of the housing, the scanner directed at the coating on the moving substrate;a controller, including a means for selectively varying the opening size of the regional extraction ports, the controller responsive to the coater scanning device and selectively controlling liquid coating flow rates through the regional extraction ports.