29 oktober 2025
Sedak tempered +
In this recorded presentation from glasstec 2024, Julian Hänig introduces sedak's new product, sedak tempered+, a glass designed without optical anisotropies. Anisotropies are strain patterns that become visible as rainbow colors or spots in tempered glass, caused by non-uniform stress during the rapid cooling of the tempering process. While standards classify this as a characteristic and not a defect, it remains undesirable for architects. Using light scanners to quantify these stress patterns, sedak developed a new tempering technology that eliminates the visible anisotropies present even in the highest standard quality class (Class A). The result is a superior glass product that enables completely homogeneous and undisturbed glass facades, fulfilling a key demand in modern architecture. Special thanks to Messe Düsseldorf GmbH for providing the footage, and to Julian Hänig for contributing to the Open GLASSroom OER collection. The creation of these resources has been (partially) funded by the ERASMUS+ grant program of the European Union under grant no. 2022-1-DE01-KA220-HED-000089750. Neither the European Commission nor the project's national funding agency DAAD are responsible for the content or liable for any losses or damage resulting of the use of these resources.