Saint-Gobain Industries

Gilles Rougier

A laminated glazing with electrical wires embedded in a thermoplastic interlayer is disclosed. The glazing is made of an interlayer of transparent or translucent thermoplastic material in which a network of electrical wires is embedded, the interlayer being in contact with a solid or laminated substrate containing at least one rigid sheet and with a layer of nonrigid plastic material, the thickness of which is usually less than one millimeter, this latter layer preferably being positioned on one of the surfaces of the glazing and preferably having self-healing and antilacerative properties. A prefabricated sheet containing the network of electrical wires can be used in the manufacture of the glazing. The wires can be of a relatively high resistance so that the glazing is heated when electrical current is passed through the wires or the wires can form part of an alarm system that signals breakage of the glazing.

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Cerdon du Loiret, France

Gilles Rougier