Experts describe the black dots on automotive windshields as a technical marvel that are critical to overall function but are generally overlooked. These dots are part of the frit band, a textured enamel paint strip that runs around the edge of the windshield. This band is critical for enhancing the grip of the adhesive and glass, ensuring the windshield is securely fastened to the vehicle.
The black dots not only serve as structural elements, but also protect the adhesive from potentially harmful UV radiation. This protection prevents prolonged sun exposure from weakening the adhesive bond over time.
The dot matrix, which is made up of ever smaller dots, helps to ensure that the temperature is distributed evenly across the windshield during the production process. By taking this proactive step, optical distortion or “lensing” is avoided, guaranteeing that straight lines on the glass stay true.
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