Many people, even old drivers, may not know what the sealing tape on the car has. In fact, this inconspicuous thing is very important for the car, it can fill the gap in the middle of our body assembly. It is also waterproof, dust-proof, and shock-absorbing.

 

Even if these functions are removed, the sealant strips have a decorative function for the car, and in many people's eyes, the car is still beautiful with their decoration. However, not every car has a sealing tape. First of all, Japanese cars and Korean cars basically have sealing tape. Even BMW and Mercedes in German cars have this type of tape, but there is a very The famous car brand is an exception. This brand is Volkswagen.

 

Volkswagen cars rarely have this kind of sealant. What is the reason for this? Could it be that Volkswagen's car has cut corners? In fact, the answer is not the same. As early as the 1990s, Volkswagen had applied laser welding technology to the sides and top of the car, and this technology is very mature and has excellent sealing performance. The key is that there are no obvious traces after the car is welded, so in terms of aesthetics, it is not necessary to have poor sealing tape, so the public does not use sealing tape to seal the car.

 

In addition to the public we are familiar with, other brands more use resistance welding technology. Although this welding technology also performs well in sealing, it will produce solder joints, so it needs to be fixed with sealing tape. The purpose is to prevent the metal from rusting, otherwise it will be very easy to rust if it is soaked by rain for a long time.