They are often found on car windshields, what are these black spots for ?

“They are often found on car windshields, & what are these black spots for ?”

You have surely noticed; an area of ​​your windshield that is "scattered" small black dots. What is their use?

On the windshield of the car and also on the side windows of some models there are areas marked with rows of black dots. Their presence is not purely decorative. These brands have a safety function. important, which must not be neglected.

The first reason for the presence of these points is in fact aesthetic. Imagine a windshield that goes from transparent glass to glass. a black frame into a clean border. That would be a bit strange, wouldn't it? The small dots create a smooth and gradual transition between the transparency of the windshield and the black border, thus giving a more harmonious appearance à the whole.

But the main reason behind these points is not only aesthetic. They also have a practical function. The black border around the windshield, known as the “fry” or "frit band", helps à protect the seal from sealing. below against direct sunlight. Without this protection, the seal could rapidly degrade under the effect of UV rays, causing water leaks. inside the vehicle. The points, as for à They further reduce the exposure of the joint to the sun, by gradually dispersing UV rays and reducing the amount of UV radiation. of heat that reaches the joint.

Another important role of these points is heat dissipation. Glass can sometimes focus the sun's rays into a single point, much like a magnifying glass can light a fire when pointed toward the sun. Blackheads help à disperse this concentration of heat, thus preventing the windshield from undergoing thermal stress which could weaken it or even cause it to crack. ;eacute;cents whereù These points also appear behind the rearview mirror, the aim is to offer additional protection against the sun's rays, as this area is not not covered by the sun visors.

Finally, during the manufacture and installation of the windshield, these points also play a role. When the windshield is installed, it is glued into place. à the bodywork with a special glue. Blackheads create an area where This glue cannot be seen from the outside, allowing installers to work without having to remove the glue. worrying about a perfect finish.

The black spots on our windshields are not simple decorative elements. They have precise functions which aim to achieve protect the car and protect it guarantee sustainability of the windshield. The next time you get into a car, take a moment to notice these little points and remember how important they are. They reflect a technology which, although discreet, is essential for our security. and our comfort.