Decorative foamed glass with dense glass surface layer and method of producing same

Abstract From the Canadian patent

The invention relates to a foamed glass plate which has a dense glass surface layer on a foamed glass layer and which is useful as a building interior material or a furniture material. The interface between the two layers is made wavy, and the dense glass surface layer is made transparent or translucent so that a wavy pattern can be seen through the dense glass layer. For example, the interface is corrugated or rippled. The foamed glass plate can be produced by the steps of layering a granular material of foam glass on a conveyor belt made of a heat resistant material desirably waving, the upper surface of the layered material overlaying, the waved surface with a layer of a granular or …