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Laminated glazing unit having improved interfacial adhesion

  • US 5,069,968 A
  • Filed: 12/20/1990
  • Issued: 12/03/1991
  • Est. Priority Date: 12/20/1990
  • Status: Expired due to Term
First Claim
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1. A laminated glazing unit comprising a substrate ply, a substantially transparent coating comprising a film stack on a surface of the substrate ply, and a laminating ply of polymeric material laminated to the surface of the substrate ply over the film stack, wherein the film stack comprises:

  • (i) a dielectric film adjacent to the laminating ply, consisting essentially of tantalum pentoxide;

    (ii) an film adjacent to the tantalum pentoxide dielectric film, consisting essentially of metal selected from the group consisting of copper and zinc; and

    (iii) an electrically conductive film adjacent to and substantially thicker than the adhesion film, consisting essentially of silver metal.

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