The secret behind car windshield dots: Safety and durability
Almost every car windshield features distinctive black dots of varying sizes along its edges. You'll find them in vehicles, regardless of class, manufacturer, or purpose. But why are they there?
8:42 AM EDT, October 30, 2024
The role of these small dots is incredibly important. To understand it, you must know how windshields are mounted in cars. Ceramic paint is applied to the edges of the glass, then heated to make the adhesive stick more firmly to the rough surface.
During heating, the paint reaches a much higher temperature than the glass itself. The dots are crucial because they help prevent large temperature differences in small glass areas, which could lead to damage. That's why their size changes gradually.
Additionally, the black border on the windshields, known as a frit, conceals the glass's connection to the body and protects the adhesive from the harmful effects of UV rays, which extends its durability.
