Skin-surfaced foam glass tile and method for production thereof

Details Skin-surfaced foam glass tile and method for production thereof Skin-surfaced foam glass tile and method for production thereof

C - Chemistry, Metallurgy

03

C

49/85

C03C 11/00 (2006.01) E04F 13/14 (2006.01) E04F 15/08 (2006.01)

Patent

CA 1333525

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 smaller 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).

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