| abstract |
A laminated safety glass pane with a predetermined breaking point is described, containing at least two prestressed glass panes and a polymeric intermediate layer which is interrupted at at least one point. The polymer intermediate layer contains two transparent plastics with different tear strength, different elongation at break and different tear strength. The laminated glass pane contains, as the predetermined breaking point, the plastic with the lower tear strength, the lower elongation at break and the lower tear resistance and, in the area that does not represent the predetermined breaking point, the plastic with the higher tear strength, the higher elongation at break and the higher tear resistance. Furthermore, at the point or points without a polymeric intermediate layer (the interruption), the laminated glass pane contains grains of a material whose hardness is higher than that of the glass used. |