or polyvinyl butyral suitable thermal radiation reflecting films in accordance with the present invention are most effective when disposed directly on the outer face of the bulletproof glass pane for this purpose a thermal radiation reflecting film which is very wear resistant and resistant to atmospheric influences is used preferred films include 50 150 nm thick laminated structures of silver which have particularly favorable transmission and reflection properties such films are widely used for heat protective panes for example a laminated composed of zno 35 nm ag 10 nm zno 35 nm may be used on this multiple film there is favorably applied a further approximately 20 nm thick film of tantalum oxide which improves the bond of the thermal radiation reflecting film to the thermoplastics intermediate film the thermal radiation reflecting films of the present invention can be applied to the bulletproof glass pane by conventional methods preferably by the method of magnetic field assisted reactive cathodic sputtering preferably the thermal radiation reflecting films of the present invention are protected such films are preferably protected by disposing them on the surface of the outermost glass sheet of the bulletproof glass which lies against the thermoplastic intermediate film by providing a thermal radiation reflecting coating preferably onto the inwardly facing side of the outermost glass sheet the thermal radiation incident from outside is for the greater part reflected so that the bulletproof glass pane becomes heated to a substantially lesser degree or does not reach its final temperature until after a substantially longer period consequently the shear stresses that build up in the.