Abstract: A hot-formed, chemically prestressable glass article having a low percentage of crystals or crystallites, in particular a plate-shaped, chemically prestressable glass article, as well as to a method and a device for its production are provided. The glass article has a composition including the components SiO2, Al2O3, and Li2O and a content of seed formers (ZrO2, SnO2, and TiO2) of at least 0.8 wt %, as well as at most ten crystals, including crystallites, per kilogram of glass, which have a maximum diameter greater than 1 ?m and up to at most 5 ?m.

Abstract: A hot-formed, chemically prestressable glass article having a low percentage of crystals or crystallites, in particular a plate-shaped, chemically prestressable glass article, as well as to a method and a device for its production are provided. The glass article has a composition including the components SiO2, Al2O3, and Li2O and a content of seed formers (ZrO2, SnO2, and TiO2) of at least 0.8 wt %, as well as at most ten crystals, including crystallites, per kilogram of glass, which have a maximum diameter greater than 1 ?m and up to at most 5 ?m.

Abstract: A chemically strengthened glass sheet is provided that has a thickness of at least 3.3 mm and at most 6.0 mm and a composition, in mol% on an oxide basis, comprising the following components: SiO2 65 to 85 B2O3 3 to 13 ? (R2O + RO) 3 to 19, wherein R2O represents any of Li2O, Na2O, and K2O, and any combination thereof, and wherein RO represents any of MgO, CaO, SrO and BaO, and any combination thereof.

Abstract: A chemically toughened or chemically toughenable sheet-like glass article is provided. The glass article includes a glass with a composition having Al2O3, SiO2, Li2O, and B2O3. The glass and/or the glass article includes not more than 7 w t% of B2O3.

Abstract: A chemically prestressed or chemically prestressable, plate-shaped or disc-shaped glass article is provided. The glass article includes a glass with a composition of Al2O3, SiO2, Na2O, and Li2O and a prestressing or a prestressability in relation to the weight percent of Na2O of at least 250 MPa/g Na2O in 100 g of glass. The Na2O is present in a weight percent between at least 0.8 and at most 6.

Abstract: A hot-formed, chemically prestressable glass article having a low percentage of crystals or crystallites, in particular a plate-shaped, chemically prestressable glass article, as well as to a method and a device for its production are provided. The glass article has a composition including the components SiO2, Al2O3, and Li2O and a content of seed formers (ZrO2, SnO2, and TiO2) of at least 0.8 wt %, as well as at most ten crystals, including crystallites, per kilogram of glass, which have a maximum diameter greater than 1 ?m and up to at most 5 ?m.

Abstract: The invention relates to a method for producing a glass substrate for vehicle glazing, in particular for a windscreen of a vehicle, which comprises hot forming of a borosilicate glass, wherein in a hot forming section, at least during stretching of the glass (8) in the flow direction or longitudinal direction of movement of the glass (8), an aging velocity Av of the glass (8) to be hot formed does not exceed 10 mm/s and an aging velocity Av of the glass preferably does not undershoot 3 mm/s, and also relates to glass substrates for vehicle glazing produced by such method as well as to windscreen projection devices and driver assistance systems comprising such glass substrates.