Multilayer heat-reflective coating system for transparent substrates, especially float glass, has a gradient of at least two materials in at least one of the layers

摘要

Heat-reflective coating system for transparent substrates, comprising a reflective layer of metal, a base coat layer of oxide and a top coat layer of oxide, has a gradient of at least two materials in at least one of the layers. An Independent claim is also included for a process for producing the coating system, in which the layers are applied in vacuo by vapor deposition or sputtering, comprising controlling the supply of gas and coating material to produce a gradient layer in a defined region.