Agc Flat Glass Europe, S.a.

Agc Glass Europe

Glaverbel

Marc Van Den Neste

Daniel Decroupet

Laurent Delmotte

Dominique Coster

Jean-Pierre Robert

Veronique Dieu

Benoît Cherdon

The glass according to the invention has a soda-lime type composition to which are added colouring elements present in the following proportions by weight: 

Low-luminous-transmittance glass

The present invention relates a colored soda-lime glass which comprises iron in a quantity which, expressed in weight of the oxide FeOin relation to the total weight of glass, is greater than or equal to 0.5%, and less than or equal to 1.0 % (quantity of total iron), a ratio of Fe2+/total Fe (redox ratio) in the range of between 20 and 65 % and titanium in a quantity which, expressed in weight of TiOin relation to the total weight of glass, is greater than or equal to 1.0 %. This glass has a light transmission (TLA4) in the range of between 15 and 55 %, a total transmission in the ultraviolet (TUV4) of less than or equal to%, and a dominant wavelength in transmission &#x3bb;D of less than or equal to 491 nm. This glass can be used, for example, as side glazing, rear-view window, roof glazing or opening roof of a motor vehicle.

Coloured soda-lime glass

The present invention relates to a colored soda-lime glass which comprises iron in a quantity which, expressed in weight of the oxide FeOin relation to the total weight of glass, is greater than or equal to 0.5%, and less than or equal to 1.0% (quantity of total iron), a ratio of Fe/total Fe (redox ratio) in the range of between 20 and 65%, cerium in a quantity which, expressed in weight of CeOin relation to the total weight of glass, is greater than or equal to 0.1%, and titanium in a quantity which, expressed in weight of TiOin relation to the total weight of glass, is greater than or equal to 0% and less than 0.2%. This glass has a light transmission (TLA4) in the range of between 15 and 55%, a total transmission in the ultraviolet (TUV4) of less than or equal to 30%, and a dominant wavelength in transmission (&#x3bb;D) of less than or equal to 491 nm. This glass can be used, for example, as side glazing, rear-view window, roof glazing or opening roof of a motor vehicle.

A process for forming a vitreous layer on a refractory surface, in which a vitrifying agent is projected by means of an apparatus against the surface with an oxygen-containing carrier gas and simultaneously with a combustible gas, the latter generating a combustion flame, characterized in that the vitrifying agent comprises particles of cullet and in that the flame generated provides, at least partially, the heat needed to form the vitreous layer on the surface. The vitreous layer thus formed makes it possible to prevent the build-up, on the refractory walls of high-temperature ovens, of dust or by-products coming from the raw materials and/or their reaction products.

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Jumet, Belgium

Marc Van Den Neste