VW PV 2507 Water Resistance Test Standard Test for Color and Glass Resistance

EUROLAB laboratory provides testing and compliance service within the scope of VW PV 2507 standard. For the local tinting of vehicle windows, they are coated with low melting point glasses (hereinafter: tints) by screen printing.

Under the action of water and aqueous solutions, water-soluble alkali and alkaline earth compounds in the paint dissolve. The speed of the attack is determined by several factors.

The destruction of the glass structure of the ceramic paint leads to the time delay and porosity in the print transition region of the glass surface, and thus interfaces between translucent media with different refractive indices. This results in partial reflection of the incident light. When viewed from the unprinted side of the glass, the opening or graying of the black print in the pane is detected.

Printed glass samples are stored for a specified test period at 80°C in a sealed container filled with test liquid. After the end of the test, the specimens subjected to the accelerated test are evaluated for color changes under specified lighting conditions.

The parts to be tested are taken from the serial process or from a process close to mass production after the relevant bending process. The firing temperature and firing time have a significant impact on the test result, so sample panels from other processes or furnaces are not suitable.

EUROLAB assists manufacturers with VW PV 2507 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.