Construction panel and manufacture thereof

摘要

A panel for use in building construction comprises a substrate board having two opposed faces. A solid and non-porous lamina is secured to a first one of the faces of the substrate board by means discrete regions of bonding between the lamina and the board. The regions of bonding cover a total area that is less than 20% of the total interfacial area between the lamina and the board. The bonding may be through an adhesive, gluing, or bonding by a polymer resin lamina and may be applied in a dot pattern onto the board or lamina. The substrate board can be a gypsum plasterboard and the lamina has a thickness less than the thickness of the plasterboard. The discrete regions of bonding have a maximum distance of 80mm between the nearest neighbouring region of bonding.