Method for producing decorated glass panels

B - Operations – Transporting – 44 – C

Patent

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Details

B44C 1/175 (2006.01) B44C 1/17 (2006.01) B44F 1/06 (2006.01) B44F 9/02 (2006.01) B44F 9/04 (2006.01) B44F 9/12 (2006.01) C03C 17/04 (2006.01) C03C 17/34 (2006.01)

Patent

CA 2177995

A method of making decorated glass panels, particularly glass panels decorated with designs to simulate stone such as marble, is described. Water-slide transfers (10) are formed by printing designs simulating marble on a backing of gummed paper with an ink of glass frit and coloured metal oxides in a printing medium. Several transfers (10) are soaked in water and then removed from their backing and placed in overlapping relationship on a panel of glass (15). The transfers are cut through in the region of their overlap (16) and the surplus material removed. After drying the panel is passed through a furnace to burn off the printing medium. A coating of ceramic or vitreous enamel material (25) is applied over the design and the panel is then subjected to a second heat treatment cycle in which the glass frits and metal oxide fuse to the glass panel, the coating is baked on to the panel and the glass is toughened by rapidly heating in a furnace and then cooling.

L'invention concerne un procédé de fabrication de panneaux de verre décorés, notamment de panneaux de verre décorés à l'aide de dessins dans le but d'imiter de la pierre telle que du marbre. On forme des décalcomanies (10) en imprimant des dessins simulant le marbre sur un support de papier gommé à l'aide d'une encre à base de fritte de verre et d'oxydes métalliques colorés dans un milieu d'impression. On trempe dans l'eau plusieurs décalcomanies (10), on les ôte de leur support et on les place en les faisant se chevaucher sur un panneau de verre (15). On coupe ensuite ces décalcomanies dans la zone où elles se chevauchent (16) et on enlève le surplus de matériau. Après avoir fait sécher le panneau, on le passe dans un four pour brûler le milieu d'impression. On applique ensuite une couverte d'émail céramique ou vitreux (25) sur le dessin puis on soumet le panneau à un second cycle de traitement thermique dans lequel le verre se fritte et l'oxyde métallique fusionne avec le panneau de verre; la couverte est cuite sur le panneau et le verre devient du verre trempé lorsqu'on le chauffe rapidement dans un four et qu'on le refroidit ensuite.

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