What are the reasons for the automatic peeling of original factory car paint?
2 Answers
The main reasons for automatic paint peeling are as follows: 1. Problem phenomenon: Due to poor adhesion and bonding between paint film layers, pathological phenomena such as paint film peeling, flaking, blistering, and delamination may occur. 2. Problem causes: (1) Incompatibility between primer and topcoat, resulting in poor interlayer adhesion. (2) Contaminated surface with oil stains, moisture, or other impurities. (3) Improper surface treatment. For example, if wood surfaces are filled with putty or painted without sanding, the oil in the topcoat may be absorbed, causing peeling, or the wood surface may not be effectively sealed. (4) Applying topcoat before the underlying layer is fully dry. (5) Construction temperature is too low.
With over 20 years of experience in auto repair, I've seen plenty of cases where factory paint peels off on its own. The root cause usually comes down to manufacturing defects: either the electrocoat layer wasn't applied properly or the baking temperature was insufficient, resulting in poor paint adhesion. Another common issue is cost-cutting in anti-rust treatment for the steel panels - oxidation and bubbling push the paint off. I've particularly noticed southern car owners struggling with this problem due to rapid moisture and salt fog penetration. Last time, a customer came in with hood blistering on a six-month-old new car - inspection revealed dust particles from the paint shop embedded in the primer. My advice: bring a paint thickness gauge during delivery inspection; anything below 120 microns warrants caution. For daily care, avoid prolonged sun exposure, clean tree sap and bird droppings promptly, but paint protection films aren't necessary.
