Schott Ag

Thomas Schmiady

Jochen Alkemper

Thilo Zachau

Christian Kunert

Lutz Klippe

Andreas Menzel

Ute Natura

Armin Vogl

Frank Coriand

Rüdiger Dietrich

Andreas Voitsch

Oliver Sohr

Matthias Schmidt

Michael Meister

Thomas Seuthe

Rolf Martin

Susanne Krüger

Sebastian Leukel

Jörg Hessenkemper

Sandra Von Fintel

Gordon Von Der Gönna

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 () in the flow direction or longitudinal direction of movement of the glass (), an aging velocity Av of the glass () 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.

Glass substrate for vehicle glazing, in particular for the windscreen of a vehicle

A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies.

Thin glass substrate, method and apparatus for its production

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 SiO, AlO, and LiO and a content of seed formers (ZrO, SnO, and TiO) 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 μm and up to at most 5 μm.

Hot-formed, chemically prestressable glass articles with a low proportion of crystals and methods and devices for producing

Thin glass substrates are provided. Also provided are methods and apparatuses for the production thereof and provides a thin glass substrate of improved optical quality. The method includes, after the melting and before a hot forming process, adjusting the viscosity of the glass that is to be formed or has at least partially been formed is in a defined manner for the thin glass substrate to be obtained. The apparatus includes a device for melting, a device for hot forming, and also a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate, and the device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged upstream of the device for hot forming.

Thin glass substrate, in particular a borosilicate glass thin glass substrate, method and apparatus for its production

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Jena, Germany

Thomas Schmiady