SPRAY DEVICE AND METHOD FOR ROLL COATING, AND SPRAY COATING APPARATUS AND METHOD HAVING THE SAME

摘要

A spray device for roll coating according to the present invention includes: a spray nozzle which sprays a coating solution onto a pattern of a roll; a linear moving member which is fixed to the spray nozzle and allows the spray nozzle to move in parallel along the surface of the roll; a coating solution supply device which is connected to the spray nozzle and supplies the coating solution to the spray nozzle; an air supply device which supplies first air to the coating solution supply device, and supplies second and third air to the spray nozzle; first to third pneumatic controllers which control the first to third air pressure of the first to third air; first to third valves which are provided between the first to third pneumatic controllers and the coating solution supply device and the spray nozzle, and are controlled to control the supplied amount of the first to third air; first to third digital pneumatic gauges which are provided between the first to third pneumatic controllers and the first to third valves, and measure the first to third air pressure which pass through the first to third pneumatic controllers in real time; and a controller which receives the first to third air pressure measured in real time and controls the moving velocity of the linear moving member.