B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 7/36 (2006.01) B28B 3/02 (2006.01) B28B 7/44 (2006.01) B28B 7/46 (2006.01) B28B 11/24 (2006.01)
Patent
CA 2376256
In an improved method for the production of slabs of ceramic material, the starting mixture is enclosed between two sheets of cardboard or paperboard, subjected to vibrating compression under vacuum. The cardboard or paperboard being thick enough to absorb the excess mixture water prior to the transfer to the subsequent drying and firing stages, said sheets of paperboard being removed before said drying stage, so that the rough-formed slab is dried resting solely on a porous fabric or felt, and baking is performed while keeping the dried rough-formed slab in contact with the oven surface solely by means of a temporary protective layer of refractory material (engobe).
Selon un procédé amélioré de production de dalles en céramique, le mélange de départ est confiné entre deux feuilles en carton blanchi ou en carton, soumises à une compression par vibrations sous vide. Le carton blanchi ou le carton est suffisamment épais pour absorber l'excès d'eau du mélange, avant le transfert dudit mélange vers les étapes suivantes de séchage et de cuisson. On enlève les feuilles en carton avant l'étape du séchage, de telle manière que la dalle à l'état brut est séchée couchée sur un tissu poreux ou du feutre, et on réalise la cuisson en maintenant la dalle séchée à l'état brut en contact avec la surface du four au moyen uniquement d'une couche protectrice temporaire de matériau réfractaire (engobe).
Marks & Clerk
Salvalaggio Maria Luisa
Toncelli Dario
Toncelli Luca
Toncelli Marcello
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