The phenomenon of car paint falling mainly refers to the loss of adhesion to the substrate due to paint cracking after the car is sprayed, and the phenomenon of small or large area detachment of the coating film under external force is called falling, which can also be divided into three types: small piece falling, large piece falling, and large piece falling. So, what is the reason for the phenomenon of car paint falling off? What is the solution? Next, let's learn more about it with the editor!

Reason:

1. Excessive lubrication on the surface of the coating can cause the paint film to fall off.

2. The surface treatment of the substrate before painting construction is not good, with oil stains, wax, moisture, dust, chemicals, etc., or the surface treatment is not carried out in a timely manner.

3. Spraying topcoat or varnish without drying the bottom layer can easily cause falling off.

4. Improper selection of the primer, high hardness of the primer, and slippery appearance can lead to the loss of adhesion between the primer and the topcoat, leading to the phenomenon of falling off.

Solution:

1. Before construction, the surface of the substrate should be treated with appropriate methods and any dirt left during the cleaning process should be removed.

2. Primer should be selected with good adhesion and wetting properties.

3. If the surface of the substrate is too lubricated, appropriate treatment methods should be taken before construction.

4. Wait until the base coat dries before spraying the topcoat and topcoat varnish.

5. Strictly follow the construction data provided by the paint manufacturer for construction.

Article source: Qingyuan Automotive Repair Paint http://www.jinliangxincai.com