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AssigneeSaint-Gobain Vitrage
InventorsFriedrich Triebs, Helmer Raedisch, Jean-Louis Bravet, Jean-Claude Abel, Noel Crux
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A method for the manufacture of a laminated glass assembly comprising (1) a monolithic or laminated glass and/or plastic support having an glazed edge, and (2) a plastic sheet comprising at least one layer of polyurethane in contact with the surface having the glazed edge is disclosed. In the invention, at least one of the two contact surfaces of the glazed edge with the polyurethane layer is treated, before the assembly of the support with the plastic sheet on an area corresponding essentially to the glazed edge, by the deposit of a primer comprising a reactive mixture having free NCO groups. The free NCO groups are capable of reacting with the glazed support and with the plastic sheet and of forming cross-linking bonds with the other components of the primer at the time of the heat cycle of the subsequent assembly. The plastic sheet is the assembled with the support, and the glass undergoes a heat cycle which enables the reaction of the primer and the definitive peripheral adhesion of the glass.
A method for the manufacture of a laminated glass assembly comprising (1) a monolithic glass or a laminated glass or a plastic support having a glazed edge on one of its surfaces, and (2) a sheet of plastic comprising at least one layer of polyurethane disposed thereon, said layer of polyurethane being in contact with the said surface having the glazed edge, said method comprising:
A laminated glass assembly comprising (1) a monolithic glass or a laminated glass or a plastic support having a glazed edge on one of its surfaces, and (2) a sheet of plastic comprising at least one layer of polyurethane disposed thereon, said layer of polyurethane being in contact with the said surface having the glazed edge, said laminated glass assembly being prepared by treating at least one surface of the said glazed edge with the polyurethane layer with a primer before assembly of the support with the said sheet of plastic and on an area corresponding essentially to the said glazed edge, said primer comprising a reactive mixture having free NCO groups and free OH groups, wherein the said free NCO groups are capable of reacting with the glazed support and with the said sheet of plastic and of forming cross-linking bonds with the other components of the primer during heat cycle of the subsequent assembly, and wherein said reactive mixture is prepared with a ratio of free NCO groups to free OH groups of at least 1.10 to 1.0;
Dependencies are inferred from the claim text.