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1. WO2000043192 - METHOD AND APPARATUS FOR THE MANUFACTURE OF SLABS OF STONE MATERIAL

Publication Number WO/2000/043192
Publication Date 27.07.2000
International Application No. PCT/EP2000/000400
International Filing Date 19.01.2000
Chapter 2 Demand Filed 04.08.2000
IPC
B28B 7/44 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
7Moulds; Cores; Mandrels
40characterised by means for modifying the properties of the moulding material
44for treating with gases or degassing, e.g. for de-aerating
B29C 67/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
67Shaping techniques not covered by groups B29C39/-B29C65/93
24characterised by the choice of material
CPC
B28B 7/44
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
7Moulds; Cores; Mandrels
40characterised by means for modifying the properties of the moulding material
44for treating with gases or degassing, e.g. for de-aerating
B29C 67/244
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
67Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
24characterised by the choice of material
242Moulding mineral aggregates bonded with resin, e.g. resin concrete
243for making articles of definite length
244by vibrating the composition before or during moulding
Applicants
  • TONCELLI, Marcello [IT/IT]; IT
Inventors
  • TONCELLI, Marcello; IT
Agents
  • DRAGOTTI, Gianfranco ; Via Paris Bordone, 9 I-31100 Treviso, IT
Priority Data
TV99A00000822.01.1999IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR THE MANUFACTURE OF SLABS OF STONE MATERIAL
(FR) PROCEDE ET DISPOSITIF SERVANT A FABRIQUER DES DALLES EN MATERIAU PIERREUX
Abstract
(EN)
A starting mix is prepared, consisting of a granulate with controlled particle size and of a cementitious binder or one based on a hardenable resin, atmospheric mixing being carried out, after which the mix is fed in free fall conditions and under vacuum to a formwork (26) consisting of a plurality of moulding chambers (28) side by side arranged vertically, so as to bring about the de-aeration of the mix before it enters each moulding chamber (28). The formwork (26) has a vibratory motion imparted to it, so that the vibration acting also on the vertical walls of the moulding chambers effects the compacting of the mix in the chamber (28) itself and the completion of de-aeration, proceeding then to the hardening of the slabs and their removal from the formwork (26). Preferably, the moulding chambers (28) consist of vertical panels (30), mounted side by side in a bundle and having a peripheral shoulder (34) along three sides, while the fourth side, without a shoulder (34), identifies the opening for feeding the mix to the moulding chamber (28). The slabs are obtained with dimensions of more than 3 metres in length by more than 1 metre in width.
(FR)
Procédé consistant à préparer un mélange de départ constitué par un granulat dont les particules présentent une forme déterminée et par un liant à base de ciment ou d'une résine durcissante, à effectuer le mélange à l'air libre, à l'introduire librement et sous vide dans un coffrage (26) constitué par une pluralité de chambres de moulage (28) placées verticalement côte-à-côte, de manière à provoquer la désaération du mélange avant qu'il pénètre dans chaque chambre de moulage (28). On soumet le coffrage (26) à des vibrations, de sorte que ces vibrations agissant également sur les parois verticales des chambres de moulage (28) effectuent le compactage du mélange dans la chambre (28) et provoquent la désaération, ce qui permet aux dalles de durcir et d'être retirées du coffrage (26). De préférence, les chambres de moulage sont constituées par des panneaux verticaux (30) montés côte-à-côte en groupe et possédant un épaulement (34) périphérique le long de trois côtés, tandis que le quatrième côté, exempt d'épaulement, identifie l'ouverture servant à introduire le mélange dans la chambre de moulage (28). On obtient des dalles de dimensions supérieures à 3 mètres de longueur et à 1 mètre de largeur.
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