Schott Ag

Rüdiger Dietrich

Jochen Alkemper

Lutz Klippe

Thilo Zachau

Christian Kunert

Thomas Schmiady

Armin Vogl

Michael Meister

Julia Weißhuhn

Oliver Hochrein

Susanne Krüger

Jovana Djordjevic-Reiss

Plate-shaped, chemically prestressed glass articles as well as methods for producing such chemically prestressed glass articles are provided. The glass article has a glass with a composition comprising SiO, AlO, and LiO and a set-drop strength from 50 to 150. The glass has at least one feature selected from: a sodium exchange depth, a storable tensile stress, a network former content of at least 82 wt %, a content of alkali oxides of at most 12 wt %, a content of alkali oxides of at most 10 wt %, and any combinations thereof.

Plate-shaped, chemically prestressed glass articles and methods for producing

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 laminated glass pane is provided that includes a first glass sheet, a polymeric layer having a thickness between at least 0.5 mm and at most 1.7 mm, and a second inner glass sheet which has a thickness of at least 0.3 mm and at most 1.5 mm and is made of a lithium aluminum silicate glass. The polymeric layer is disposed between the at least two glass sheets. Furthermore, the glasses of the first and the second glass sheets are matched so that the temperatures at which the two glasses of the first and second glass sheets have the same viscosity in the viscosity range between 10dPa·s and 10dPa·s differ from each other only by a maximum of 50° C.

Composite glass pane

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

Chemically toughened glass is provided that has a depth of compressive stress for potassium of at least 4 &#x3bc;m and at most 8 &#x3bc;m; a compressive stress at a depth of 30 &#x3bc;m due to sodium exchange of at most 200 MPa and a minimum amount of at least 90 MPa where the thickness is 0.5 mm, at least 100 MPa where the thickness is 0.55 mm, at least 110 MPa in where the thickness is 0.6 mm, at least 120 MPa where the thickness is 0.7 mm, and at least 140 MPa where the thickness is 1 mm; a ratio of sodium exchange depth, in &#x3bc;m, to the thickness, in mm, that is greater than 0.130; and a normalized integral of tensile stress that is a storable tensile stress of at least 20.6 MPa and at most 30 MPa.

Glass with preferably increased storable tensile stress, chemically toughened glass article with preferably increased storable tensile stress, method for producing such glass, and use thereof

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Jena, Germany

Rüdiger Dietrich