Fabric reinforced rubber sheet for the production of slabs of resin hardened finely divided stone material
OwnerLuca Toncelliinventor
Life of this patent
Estimating the term…
Abstract
A shaped sheet usable for the production of slabs made from a material mixture of granulated stone material and/or sand and by a binding resin includes 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. The structure of the flat base includes a first rubber layer of previously cured rubber forming a first surface which adapted to be in contact with said the material mixture and a second rubber layer of previously cured rubber, a first layer of cloth and a second layer cloth, wherein the said second cloth includes a second outwardly directed surface of the shaped sheet.
Claims12
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.
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 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 and 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,
- and wherein the flat base is subject to a final dimensional stabilization treatment comprising heating to a temperature in the region of 160° C. before bonding to the peripheral frame, the peripheral frame being made with previously cured rubber of the same grade as the said first and second rubber layers.
Dependencies are inferred from the claim text.