Abstract: Disclosed is a method for controlling the pattern-width of a coating liquid dispensed from a nozzle. The method includes the steps of: dispensing the coating liquid downward from the nozzle in a dispensing position on a measurement reference line to photograph with a camera positioned at a predetermined horizontal distance from the measurement reference line arranged perpendicularly to a coating reference surface; calculating the pattern-width of the coating liquid on the coating reference surface from image data obtained by photographing the coating liquid dispensed from the nozzle in the dispensing position with the camera; comparing the calculated pattern-width of the coating liquid with a coating liquid reference pattern-width; and adjusting dispensing pressure by increasing or decreasing pressure of air supplied to a pressure container that provides the coating liquid to the nozzle when the calculated pattern-width of the coating liquid is outside the reference allowed error.

Abstract: Disclosed is a method for controlling the pattern-width of a coating liquid dispensed from a nozzle. The method includes the steps of: dispensing the coating liquid downward from the nozzle in a dispensing position on a measurement reference line to photograph with a camera positioned at a predetermined horizontal distance from the measurement reference line arranged perpendicularly to a coating reference surface; calculating the pattern-width of the coating liquid on the coating reference surface from image data obtained by photographing the coating liquid dispensed from the nozzle in the dispensing position with the camera; comparing the calculated pattern-width of the coating liquid with a coating liquid reference pattern-width; and adjusting dispensing pressure by increasing or decreasing pressure of air supplied to a pressure container that provides the coating liquid to the nozzle when the calculated pattern-width of the coating liquid is outside the reference allowed error.

Abstract: The present invention relates to an air spray device for a heterogeneous mixture coating solution without a separate stirring device. The air spray device 100 comprises: a main body 110 provided with a heterogeneous mixture coating solution inlet 111 and an inlet 112 for compressed air from the outside; an extension block 120 coupled in a downwardly extended shape at the lower end of the main body; a nozzle assembly 130 coupled at the lower end of the extension block; a communication path 140 vertically formed in the centers of the main body, the extension block and the nozzle assembly; a needle valve 150 provided inside the communication path; and a plunger 160 formed in a plate shape to be positioned in proximity to the bottom side of the communication path of the extension block to stir the heterogeneous mixture coating solution.