LAMINATED SAFETY GLASS WINDOWPANE, METHOD FOR THE PRODUCTION AND USE THEREOF

摘要

A composite safety glass panel with a predetermined breaking position is described, containing at least two prestressed glass panels and a polymeric intermediate layer. The polymeric intermediate layer contains two plastics materials of different fracture resistance, different elongation at break and different fracture propagation resistance. The composite glass panel contains as predetermined breaking position the plastics material having the lower fracture resistance, the lower elongation at break and the lower fracture propagation resistance, and in the region that does rot constitute the predetermined breaking position contains the plastics material having the higher fracture resistance, the higher elongation at break and the higher fracture propagation resistance. The composite glass panel also contains at at least one place (at the striking point) one or more bodies of a material whose hardness is greater than that of the glass that is used.