Airless Spray Gun vs Conventional Air Spray Gun: Understanding the Differences

When it comes to using spray guns for painting or coating surfaces, understanding the differences between an airless spray gun and a conventional air spray gun is crucial. One key difference is how far the gun should be held from the work surface.

The reason why the airless spray gun is held further away from the work surface compared to a conventional air spray gun is due to the nature of the sprayed material. In the case of airless spraying, the material being sprayed is wetter when it hits the substrate. This is because the paint or coating is forced out of a small nozzle at very high pressure, resulting in a more concentrated and powerful spray.

By holding the airless spray gun further away from the work surface, it allows the wetter material to disperse evenly. This helps in preventing overspray, which is the unintentional mist of paint that goes beyond the targeted area, as well as pooling, which is the accumulation of excess material in one spot.

Key Points:

1. Airless Sprayed Material: Airless sprayed material is wetter than conventional air sprayed material when it hits the substrate. 2. Dispersing Evenly: Holding the airless spray gun further away allows the wetter material to disperse evenly. 3. Prevention of Overspray and Pooling: By holding the gun at a distance, overspray and pooling can be avoided, resulting in a more uniform and professional finish.

Therefore, the technique of holding the airless spray gun further away from the work surface plays a crucial role in achieving a successful painting or coating job. It is essential to understand the characteristics of the sprayed material and adjust the distance accordingly to ensure a smooth and even application.