Our success story began in 1959, when our companys founder Alfred Arnold invented a new multiple-pane insulating glass. The main innovative feature was the flexible edge seal that replaced the permanent edge soldering that had been standard until then. The idea went around the world and to this day is the standard for the production of insulating glass. But it also made possible the manufacture of insulating glass in industrial manufacturing infrastructures and by as early as the 1960s was a key element in improving the energy efficiency of buildings.