Beyond Aesthetics: The Ingenious Purpose Behind the Little Black Dots on Car Windows

Car windows have been a feature of automobiles for over a century, but have you ever wondered why they have little black dots on them? These dots are known as frits, and they serve several important functions.   The frits are made of ceramic paint that is baked onto the glass during the manufacturing process. They are typically found around the edges of the windows, but can also be found in other areas. The primary function of the frits is to provide a barrier between the glass and the adhesive used to attach the window to the car. This helps to create a stronger bond and reduce the likelihood of the window becoming detached in the event of an accident.   In addition to providing a barrier, the frits also help to reduce glare and improve visibility. The black color of the frits absorbs sunlight, which helps to prevent reflections and glare that could distract the driver. The frits also act as a border for the driver's field of vision, helping to keep their focus on the road ahead.   Another important function of the frits is to hide the urethane adhesive used to attach the window to the car. Without the frits, the adhesive would be visible and could detract from the appearance of the car's windows.