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Breton Spa

Toncelli, Luca

Luca Toncelli

Angelo Luison

Dario Toncelli

Vito Di Noto

Claudio Saurin

Enrico Negro

Fabio Bassetto

Mauro Bettiol

Marcello Zerbetto

Federico Bertasi

Michele Stangherlin

Angelo Doni

Fabrizio Dughiero

Francesco Giannini

Maria Luisa Salvalaggio

Eddy Zen

Gabriele Corletto

Stefano Zeggio

Graeme Nawn

Keti Vezzu′

Giuliano Luison

Riccardo Trojetto

Article made of conglomerate material in the form of a slab including an aggregate which includes granules of expanded material having a selected particle size range and defining between them inter-granular cavities containing only air and no filling material. The aggregate also includes a binder present in a controlled minimum quantity sufficient for lining the granules of expanded material. The article also includes a lining layer integral with the aggregate. Also, a method for the production of an article made of conglomerate material.

Article made of conglomerate material and method for manufacturing such article

In a method for manufacturing articles in the form of a slab or block, obtained by means of a procedure during which an initial mix including aggregates and a binder undergo vacuum vibro-compression followed by a step involving hardening of the binder, the aggregates include synthetic aggregates and fillers with a hardness greater than or equal to 5 Mohs, which contain silicon dioxide substantially only in amorphous form.

Method for manufacturing articles in the form of a slab or block with a hardening binder, and articles thus obtained

Method for manufacturing automatically slabs of conglomerate stone and/or ceramic material with a veined effect from a base mix (M), which method comprises a step of a) depositing a layer of base mix (M) inside a temporary support (S), (b) automatically forming on the layer of base mix (M) at least one plurality of grooves (F) of predetermined width, c) automatically distributing at least one dye inside the grooves (F) and d) compacting the layer of base mix (F). The at least one dye consists of a colouring mix (C, C) comprising at least one binder. The invention also relates to a robot island () for forming veining in a layer of base mix (M) for the manufacture of slabs and an apparatus for manufacturing slabs with a veined effect.

Method, robot island and apparatus for manufacturing slabs made of conglomerate of stone and/or ceramic material with veined effect

A countertop () for kitchen furniture comprising a hob () with at least one magnetic inductor () designed to be used for cooking food and located underneath at least one cooking area () of said hob (), said hob () further comprising at least one removable protection element () designed to be positioned on top of said at least one cooking area (). The hob () is provided with at least one safety device () designed to ensure correct positioning of the at least one removable protection element ().

Countertop with induction hob

Method for manufacturing coloured glass-ceramic slab articles from a base mix, including the steps of (a) preparing a mix comprising a colouring pigment, at least one binder and a preponderant amount of a glass frit having a specific composition, (b) distributing the mix in a forming support, (c) compacting the mix, (d) drying the mix, (e) sintering the compacted and dried mix by firing to obtain a slab article, and (f) cooling the articles under conditions such as to prevent—even partial—devitrification and/or crystallization of the glass frit. Also relating to a glass frit for manufacturing base mixes and a coloured glass-ceramic slab article obtained from the base mix.

Method for manufacturing coloured glass-ceramic slab articles from a base mix, glass frit for manufacturing the base mix and coloured glass-ceramic slab article so obtained

A mold () intended to form a slab from a mixture of agglomerate, a sheet () of PVA-based plastic material deposited over the mold surfaces so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer () of a fluid agent containing PVA in a solution is interposed between the sheet () and the mold surfaces. A system involving a plant and mold are also described.

Method, plant and molds for forming slabs of agglomerate

A plant for the production of slabs from a mixture of agglomerate comprises a station () with a mixture distribution unit () which pours the mixture onto the inner surface of a slab forming mould () present in the station. The mould () is provided with a sheet () of plastic protective material arranged above the inner surface of the mould and which forms the surface for contact with the mixture which is introduced into the mould by the distribution unit (). The station comprises air suction means which are coupled/connected to suction ducts () which are present in the mould and which emerge with their front end inside the mould in a zone of the mould situated between the inner surface of the mould and the sheet (), so as to allow the suction of air between the sheet and this inner surface and bring the sheet () against this surface by means of a vacuum. A method for the production of slabs is also described.

Plant and method for the production of slabs from a mixture of agglomerate

Method for manufacturing slab articles from a mix, comprising the steps of a) preparing a mix comprising a preponderant amount of a glass frit and a binder, b) distributing the mix in a support, c) compacting the mix, d) drying the mix, e) sintering the mix and f) cooling the article. The glass frit comprises a weight amount of silica (SO) comprised between 62% and 68%, a weight amount of alumina (AlO) comprised between 3% and 5%, a weight amount of potassium oxide (KO) comprised between 3% and 5%, a weight amount of calcium oxide (CaO) comprised between 18% and 26% and a weight amount of magnesium oxide (MgO) comprised between 1% and 4% The cooling step is performed in a controlled manner by modulating the cooling speed in a temperature range not greater than 1.160° C. and not less than 1.000° C. in order to perform the at least partial devitrification and crystallization of the glass frit. The invention also relates to a glass frit and an article in slab form.

Method for manufacturing slab articles from a base mix, glass frit for manufacturing the base mix and slab articles so obtained

In a method for manufacturing articles in the form of a slab or block, the articles are obtained from an initial mix comprising aggregates and a binder. Synthetic aggregates and fillers have a hardness greater than or equal to 5 Mohs, and contain silicon dioxide substantially only in amorphous form, the silicon dioxide in crystalline form being present in quantities of less than 1% by weight.

A grinding and/or polishing machine () for slabs of stone material, such as natural or agglomerated stone, ceramic or glass, comprises a support bench () for the slabs to be machined and at least one machining station () with a pair of bridge-like support structures () arranged opposite each other with, above, a beam supporting a plurality of machining spindles (). First relative movement means () move the slab in a longitudinal direction with respect to the machining station (), while the beam moves transversely with respect to its length by means of second movement means (). Each spindle is supported on the beam so that it can be swivelled by associated movement means () about an oscillation axis () which is parallel to, but separate from the motorized vertical axis () of the spindle. The spindles thus oscillate about the respective oscillation axes () in cooperation with the longitudinal and transverse movements, respectively, of the first and second movement means (and) so as to polish and/or grind the surface of a slab on the support bench.

Machine and method for grinding and/or polishing slabs of stone material, such as natural or agglomerated stone, ceramic and glass

In the method for manufacturing conglomerate stone slabs using the Bretonstone technology, in the variant where the starting mixture is enclosed between two paper sheets, the improvement consists in replacing each paper sheet with a containment element consisting of a paper sheet, one surface of which has, applied thereon, a film of plastic material which is impermeable to organic vapours, impermeable to the liquids and in particular to the liquid resin constituting the binder of said mixture, resistant to the catalysis temperatures of the said resin and resistant to hot solvents and chemical vapours. Preferably, said plastic material is water-soluble, in particular polyvinyl alcohol.

Method for manufacturing conglomerate slabs

A machine tool comprises a structure in which at least one component () of this structure is thermally insulated from the external environment and in which this component () is sealed so as to prevent fluid communication between the inside () and the outside of the component () of the structure.

Machine tool and method for controlling temperature variations in a machine tool

During the manufacture of slabs with a veined effect a liquid or powder colouring agent is deposited on the surface of a thin layer of starting mixture by means of at least one dispensing device and the resultant mixture is supplied, falling freely, from one end of an extractor belt forming the bottom of a mixture metering/distributor unit, following which the mixture is transferred, falling freely, onto a temporary moulding support. This results in the production of slabs provided with veining extending through the entire thickness of the slabs and also visible along the whole edge of the slab, even after it has been machined.

Apparatus for manufacturing slabs with veined effect

A mix dispenser () comprises a hopper () with a top opening () for filling the hopper with a predetermined amount of mix and a bottom opening (). The dispenser comprises a conveyor () which forms the bottom of said hopper () and is designed to extract the mix from the hopper () and convey it towards an end from where it falls into a mould. The dispenser is characterized in that said conveyor () comprises a supporting meshwork () made of a material resistant to the vapours of solvents such as styrene and operated by an electric motor (). Furthermore a plant comprising such as dispenser is also described.

Dispenser for mixes

A method for preparation of a mold () intended to form a slab from a mixture of agglomerate comprising the steps of depositing over the mold surfaces a sheet () of PVA-based plastic material so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer () of a fluid agent containing PVA in a solution is interposed between the sheet () and the mold surfaces. A plant for carrying out the method and a method for production of a slab are also described.

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Bassano del Grappa, Italy

Luca Toncelli