PURPOSE: To obtain a laminate easy to decorate and excellent in strength by laminating a second layer formed by curing a second inorg. compsn. based on molten fly ash or inorg. powder containing particles with a specific particle size in a specific wt.% and a specific metal aq. soln. with specific concn. to at least the single surface of a first layer composed of a cured first inorg. compsn.
CONSTITUTION: In an inorg. laminate, a first inorg. compsn. based on fly ash containing 80wt.% or more of particles with a particle size of 20μm or less and one of an aq. soln. containing 1wt.% or more of alkali metal hydroxide and an aq. soln. containing 1wt.% or more of alkali metal silicate is cured to provide a first layer. A second inorg. compsn. based on molten fly ash or an inorg. powder and one of aq. soln. containing 1wt.% or more of alkali metal hydroxide and an aq. soln. containing 1wt.% or more of alkali metal silicate is cured to laminate a second layer on at least the single surface of the first layer.
NAKANO TATSUTOSHI
NITTA KATSUZO
