Metal oxide coated glass blocks

Abstract

Abstract The method of preparing transparent metal oxide coated glass blocks includes forming the blocks in halves by positioning a molten mass of glass in a suitable mold that has a fixed bottom plate and a vertical exterior forming shell. A plunger is inserted into the mold to shape the molten mass of glass into a half of a glass block with an upwardly extending rectangular edge portion. While at an elevated temperature of above 1,000* F. the rectangular edge portions of two block halves are positioned in overlying abutting relation and are flame sealed. While still at an elevated forming temperature of between about 900* F. and 1,150* F. the sealed block is sprayed with a heat decomposable metal organic salt in organic solution to form a metal oxide coating on the block exterior surface. After spraying at this elevated forming temperature the block is annealed in a conventional manner. Another embodiment includes spraying the inside surface of the block halves at this elevated temperature immediately after forming and prior to sealing. Still another embodiment includes spraying the outside surface of the block halves immediately after forming and prior to sealing while at the elevated temperature of between about 900* and 1,150* F.

Inventors

• 👤 W Johnston

Bibliographic Details