BACKGROUND ART There are known synthetic marbles and granites constituted by agglomerates of different minerals, mixed with resins. A method presently used for carrying out said agglomerates consists in inserting granules mixed with the resin in forms, where they are heated and subject to high vibro-compression in order to achieve the hardening of the whole mass, which becomes an enbloc. Afterward the enbloc must be cut, smoothed and worked, for carrying out the desired elements. This method uses a low resin percentage, but requires presses and large dimension equipments, with consequent investments and high operational expenses. Moreover the cuts and the polishing of the raw plates produce large amount of powders and require long machining times.

Another method consists in forming plates having a defined thickness by positioning the powders mixed with resins into rubber trays or into belts with holding sides, and achieving the hardening of the whole mass by vacuum vibro-compression and following free baking in oven.

Another method currently used for carrying out the agglomerates consists in pouring the mixture of granules and resins into an open mold. In this case it is necessary to use a very large amount of resin, with consequent decrease of the mechanical strength and resistance to heat of the manufactured elements.

DISCLOSURE OF THE INVENTION The objects of the present invention consist in carrying out fire-proof, water-proof and

mechanical stress-proof panels, tiles and similar with finishes made of brickwork, melaminic, or of other types, also decorated with carvings or three-dimensional architectural elements, using means not excessively expensive and having a low resin percentage. The manufactured elements can be advantageously used for floorings, staircases, coverings and furnitures generally, or also for surface of kitchens, tables, benches and similar. Adding rubber granules or recycled plastic materials, high characteristics of acoustic insulation are achieved, which allow using the panels also for floors of suspended or floating type, with suitable female-male connections.

The terracotta granules, or of other minerals are mixed with bi-component or thermosetting resins and distributed with a dosing device on a plan, in such a way to form a layer of desired thickness. The layer is then inserted between the heated surfaces of a press, where the resin polymerizes, hardening by virtue of the simultaneous effect of pressure and heat. In particular, the surfaces can be constituted by wastes of grinded bricks, to carrying out elements similar to the brick, or constituted by granules of different minerals, to carrying out marble or granite type finishes. The surfaces can be also coated with melaminic sheets, or with ready laminated plastic, which are heat included into panels so manufactured already melaminic coated. A stiffening frame can be added in the base portion of the layer.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is now described in detail, with particular reference to the attached drawings, which show by way of example some possible embodiment: - figure 1 shows a side schematic view of a plant for carrying out panels, tiles and similar according to the process object of the present invention; - figure 2 shows a top view of the plant of figure 1; - figures 3 and 4 show respectively a transversal section and a top view of a panel with brick superficial finish; - figures 5 and 6 show a transversal section and a top view of a panel with melaminic superficial finish ; - figures 7 and 8 show a transversal section and a top view of a panel with grooves creating a visible bricks effect ; BEST MODE OF CARRYING OUT THE INVENTION

With reference to figures 1 and 2, numeral 1 indicates a silo containing the granules of material to be agglomerated. Several silos could be provided, containing different material, for instance granules or powders of brick wastes, granules of other minerals, rubber granules or recycled plastic materials. The granules, positioned in the hopper 2, are transferred by a cochlea 3 into a mixer 4, where they are mixed with bi-component or thermosetting resin. The two components of the resin are introduced in the mixer 4 by means of pumps 5 and 6 and the ducts 7 and 8, shown in figure 2. The thermosetting resin is directly inserted into the granules.

The granules mixed with the resin are introduced in a dosing hopper 9, which can translate over rails 10 in order to scatter a layer of agglomerate 11 on the belt 12, provided with holding sides.

The scattered layer is therefore introduced in the press 13, through the belt 12. The heated jaws of the press cause the polymerization of the thermosetting or bi-component resin: it is carried out a panel made of firmly bonded mineral agglomerates, with a low percentage of resin, resistant to fire, water, dirty and mechanical stresses.

While the heat pressing of the loaded agglomerate layer is operated, the dosing hopper 9 can depose on the belt 12 another layer of agglomerates mixed with bi-component resin. At the pressure stop, by means of the belt 12 the completed panel is discharged and a new layer is loaded.

The static press can be substituted with a continuous press in order to eliminate the opening and closing dead time. In this case a follower cutting device must be provided at the press outlet for carrying out panels from a continuous panel.

The panels can be homogeneous, or with a superficial portion different from the base portion, as shown for instance in figure 3. In such figure numeral 14 indicates the superficial portion and numeral 15 indicates the base portion. In particular, the superficial portion 14 could be carried out with brick powder, to achieve a brick finishing. The stamping superficial portion could be carried out also by agglomerating, with the same procedures, different mineral granules, in such a way to achieve a marble or granite type effect.

The base portion 15 may contain rubber granules or recycled plastic material, to confer to the panels suitable characteristics of flexibility and acoustic insulation.

On the layer 11, before the introduction into the press, it could be applied a melaminic sheet 16,

shown in figures 5 and 6, which polymerizes at the same time with the agglomerate layer or a ready plastic laminate, for which the same agglomerate acts as adhesive, in such a way to carry out a panel already coated. The panel can be afterwards finished on the surface with decorations and heat and cold ceramic enamels.

The panels used in the building, shipbuilding fields and can be fit for floorings, also floating, or inner or external coverings of large surfaces, simulating the effects of the visible bricks with varied decorative patterns. The panels can be pantograph carved, for carrying out different throated, inclined or sloped connections, or straight or rounded grooves, or ornamental patterns.

Deepening the incisions through a numerical control pantograph up to consume the whole rigid layer, the panels can be stick on curved surfaces, such as columns of reinforced concrete, internal spiral staircases, arcs and vaults generally. Grids of different shape and dimension can be carried out as well.

Using shaped molds, panels already having cuts can be carried out, such as, for instance, the cuts indicated with numeral 17 in figures 7 and 8.

In the layer 11 could be inserted a stiffening frame, made of fiberglass or other materials, to improve the mechanical characteristics of the panel. The sandwich panel so carried out can be superficially calibrated using a sanding machine and superficially treated with wax or suitable varnishes or enamels and heat and cold ceramic decorations. The panels can be cut, squared and predisposed for joints, in the same way of MDF panels.

By agglomerating light minerals, such as pumice, pearlite, aluminium silicate or hollow glass microspheres, with inner stiffening frames, shaped panels with different thickness can be carried out, with rusticated ashlars or other decorative elements, usable for false ceilings, for flame trap or other.

With the described process panels can be carried out with different types of finish, resistant to fire, water, dirty, mechanical stress and acoustically insulated: the specified objects have been therefore achieved.

The dosing device could be fixed, or positioned on a mobile belt also during casting, for instance in case of continuous press.