Difference between original paint and touch-up paint

Original paint:

As the name implies, the original car paint is all the car paint when the car leaves the factory.

First of all, let's understand the structure of car paint: in the process of car body painting, different paints are used at different stages and different paints form different paint layers. On the car body steel plate, there are four paint layers: electrophoretic layer, intermediate coating, color paint layer and varnish layer. These four paint layers are isomorphic to form the car paint layer that we get visually, which is often called the original paint.

Touch-up paint:

The car paint repaired in the later 4S shop (or non-4S shop) is only a part of the middle coat+color paint layer+varnish layer after wiping.

This kind of paint belongs to high temperature paint, and it needs to be baked at high temperature as high as 170- 190℃ to achieve good adhesion and hardness.

It is impossible to meet the technical requirements of painting and touch-up painting in 4S shops or repair shops. Only low-temperature paint can be selected. This coating can be dried in 2 hours, and the hardness can reach 80% after 24 hours, and the ambient temperature of 60-70℃ is enough.

Although the low-temperature paint can't reach the technological level of the real original paint, it is also durable enough.

Compared with ordinary paints, some so-called original paints on the market are only different in price except for different paint suppliers. Maybe this paint company has cooperation with automobile manufacturers or this store, so it is called "original paint".

In other words, the quality of the so-called original paint (not the real original paint) is not much different from that of ordinary paint. The supply of paint is outsourced, and almost all paint manufacturers in the market have good quality. So you don't need to mind too much when painting. The most important thing is to look at the painting process and technology of this 4S shop or repair shop.