GLASS VEHICLE ROOF COMPRISING LOCALIZED ZONES UNDER COMPRESSIVE STRESS

摘要

The invention relates to a motor vehicle roof comprising two longitudinal edges and two transverse edges which is symmetric about a median longitudinal plane, consisting of glazing comprising at least one sheet of mineral glass, said sheet comprising a belt of compressive edge stresses, said sheet comprising at least two localized zones of compressive stresses inside said belt and positioned symmetrically about said plane of symmetry, each localized zone of compressive stresses being less than 30 cm from a longitudinal edge.