Have you ever encountered the problem of uneven coating adhesion on furniture? This not only affects the appearance, but also the durability of the furniture. There may be the following reasons:

Causes of uneven coating adhesion

1. Improper surface treatment
If there are oil stains, floating dust or smooth traces on the surface of the product, the powder will not be able to "take root", and the coating will peel off after a long time.

2. Unsuitable curing conditions
Temperature swings or off-cycle curing burn the coating’s shell while leaving its core raw, and this slashes adhesion.

3. The spray gun is seriously aged
Electrode wear and poor air flow will make the powder output thick or thin, and the film layer of different thicknesses will naturally be difficult to adhere evenly.

Solutions to uneven coating adhesion

1. Strengthen surface treatment
First, thoroughly remove oil and dust from the workpiece, then lightly grind out a fine rough surface and blow it clean to ensure that the coating firmly grasps the substrate.

2. Optimize curing conditions
Set the furnace temperature and duration according to the process requirements, monitor the entire process, avoid temperature fluctuations, and allow the coating to harden evenly.

3. Utilize the automatic adjustment function of the spray gun
Enable the automatic mode of the electrostatic powder spray gun, and adjust the voltage and current in real time as the gun distance changes, so that the powder is more evenly distributed and dead corners can be in place at one time.

During the spraying process, ensuring proper surface treatment of the workpiece and suitable curing conditions are the key to ensuring coating adhesion. At the same time, using the automatic adjustment function of the powder spray gun can greatly improve the spraying efficiency and achieve the best spraying effect.