Patent ID: 6713015
Filing Date: 2004-03-30
Classification: B28B

Abstract:
A method for the production of a slab of ceramic material, comprising the stages of:(i) providing a temporary support layer and arranging on top of said temporary support layer a first sheet of cardboard or paperboard (ii) depositing in a metered quantity a mixture of a granulated material and a water-based binder on a said first sheet of cardboard or paperboard made with a porous material, (iii) applying a vibrating compression under vacuum to the mixture so as to obtain a â€œvirginâ€  slab, (iv) drying the â€œvirginâ€  slab while it is deposited on a second support made with a porous material so as to obtain a dried slab, (v) depositing the dried slab on a protective layer of refractory material, (vi) firing the dried slab while the slab is deposited onto said protective layer, wherein a second sheet of cardboard of paperboard is applied onto the mixture layer prior to the stage (iii) of vibrating compression under vacuum so as to have the mixture layer enclosed between two sheets of cardboard or paperboard of sufficient thickness for absorbing the excess mixture water, and wherein said first and second sheets of cardboard or paperboard are removed prior to said drying stage (iv).