| 摘要 |
This invention is directed to a spray gun comprising a spray gun body (1), an air cap (2), a fluid spray nozzle (3) having a fluid tip (4) and at least one air distribution channel for atomizing air (8) and at least one air distribution channel for fan air (9), wherein the fluid spray nozzle and the air cap are configured to direct an atomization airflow at an angle of 10 to 70 degrees, preferably 15 to 60 degrees, preferably of 30 to 45 degrees (relative to the coating composition jet) into the coating composition jet, and the fluid spray nozzle and the air cap are configured to provide an atomizing air pressure to fan air pressure ratio (AA/FA) of 0.1 to 10, preferably 0.5 to 1.0, preferably of 0.6 to 0.9, preferably of 0.66 to 0.88. The invention is also directed to the use of the spray gun for applying water-based coating compositions, in particular water-based clear coat coating compositions. The invention is also directed to a method for producing a coating layer over a substrate with a coating composition. The invention is also directed to a method for applying a layer of a water-based coating composition onto a substrate by a spray gun. |
