SKIN-SURFACED FOAM GLASS TILE AND METHOD FOR PRODUCTION THEREOF

• Main Authors: NAKADA, RYO, KAWANISHI, KIYOTAKA, FUKUMOTO, KATSUHISA, YAMANO, JUNPEI
• Format: Patent
• Language: English
• Published: 03.02.1993
• Subjects: BUILDING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS; FIXED CONSTRUCTIONS; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The method for producing skin-surfaced foam glass tile comprises molding a material consisting essentially of a vitrifiable mineral and a foaming agent into a tile-like block; coating the block with a thin layer comprising a vitrifying agent for the mineral material; heating the coated block to a temperature of fusing the coated layer whereby the molten vitrifying agent permeates into the coated surface of the block; and further heating the coated block to a temperature of softening the vitrifiable mineral. In the method, a thin layer comprising a vitrifiable mineral and a less amount of a foaming agent can be placed between the tile-like block and the vitrifying agent layer, followed by firing. The foam glass tile(4) has heat-insulating property and closed cell structure, and comprises a foam glass tile body(1) and a rigid reinforcing vitrified skin layer(2), the skin layer being integrally melt-bonded onto at least the top surface of the foam glass body(1).