Patent ID: 6176920
Filing Date: 2001-01-23
Classification: B28B,B32B,E04C,Y10S,Y10T

Abstract:
A method of forming a panel comprising:(a) placing a first porous sheet of reinforcing material in a panel mould;(b) providing a cemenetitious mixture and dispensing said cementitious mixture into said mould to cover said first sheet, thereby forming a cementitious layer;(c) vibrating said cementitious mixture to fully encapsulate said first sheet in said cementitious layer, said cementitious mixture having a wet density which facilitates full encapsulation of said first sheet when said cementitious mixture is vibrated.(d) placing a second porous sheet of reinforcing material atop said cementitious layer;(e) vibrating said cemenetitious mixture to fully encapsulate said second sheet in said cementitious layer;(f) curing said cmentitious layer so that said cementitious layer, said first sheet and said second sheet form a panel; and(g) removing said panel from said mould.