METHOD FOR THERMALLY TOUGHENING GLASS SHEETS, IN PARTICULAR TO BE USED AS MOTOR VEHICLE SIDE OR REAR WINDOWS

摘要

Method for thermally toughening glass sheets and glass sheets obtained by this method, in particular to be used as motor vehicle side or rear windows. …A method of thermally toughening glass sheets for use as motor vehicle side or rear windows so that the glass sheets produced conform to regulations specifying fracture requirements. …The glass sheets are advanced through a quenching station for gas quenching. The advance of the glass sheet relative to the flow of quenching gas is terminated for a predetermined time whereby localised gas flows are applied to the glass sheet. The method induces in the glass sheet a distribution of regions of more highly toughened glass interspersed with regions of lesser toughened glass.