Patent ID: 7241710

Claim:
A shaped sheet for the production of slabs from a material mixture of granulated stone material mid/or sand and by a binding resin, the shaped sheet comprising: a flat base and a peripheral frame projecting from the base for a predetermined height so as to define a seat of dimensions corresponding in plan to those of the slab to be produced; wherein the structure of the flat base comprises: a first rubber layer of previously cured rubber forming a first surface adapted to be in contact with the material mixture and a second rubber layer of previously cured rubber, the first and second rubber layers having same heat transfer properties, a first layer made of a non-deformable cloth or a non-deformable fabric interposed between the first and second rubber layers, and a second layer made of a non-deformable cloth or a non-deformable fabric provided on the second rubber layer, wherein the second cloth or fabric layer comprises a second outwardly directed surface of the shaped sheet.