Schott Ag

Thomas Roßmeier

Clemens Ottermann

Volker Seibert

Martin Lotze

Andreas Habeck

Jürgen Vogt

Andreas Ortner

Kurt Nattermann

Rainer Liebald

Thomas Wiegel

Markus Heiß-Chouquet

Frank Macherey

Ulrich Battmer

Uwe Wilkens

A method for producing long-term bendable glass material includes: bending a glass material in a bending radius in a range of 1 mm to 10mm; storing the bent glass material for a time period of at least 1 day; inspecting at least a portion of the bent glass material for damage after the storing; and classifying the inspected bent glass material as a reject if damage is detected or as a long-term bendable glass material if no damage is detected.

Long-term bendable glass material, and method for the production of a long-term bendable glass material

A method for testing the strength of a sheet-like element having two opposite faces and made of hard brittle material under tensile stress is provided. The method includes passing each of the faces of the element over a roller and thereby bending the element so that each of the faces is subjected to a first tensile stress in a portion in which the opposite face is in contact with a surface of the roller; exerting a second tensile force on the element in the direction of advancement so that both faces are subjected to the second tensile stress of at least 2 MPa so that the first and second tensile stresses add up to define a resultant tensile stress; and monitoring the element and determining whether the element has a defined breaking strength equal to the resultant tensile stress or whether the element breaks under the resultant tensile stress.

Apparatus for testing the strength of sheets made of hard brittle material under tensile stress

A method and an apparatus for stabilizing the position of a sheet-like element made of hard brittle material during transportation thereof along a transport path is provided in which the element is guided through a roller chicane having three rollers.

Apparatus and method for stabilizing sheets of a hard brittle material

Method for testing the strength of sheets made of hard brittle material under tensile stress

A glass roll, as well as a device and a method for manufacturing the glass roll are provided. The glass roll includes a glass ribbon having a thickness, a length in an x-direction, and a width in a y-direction. The glass ribbon has at least one defect site at a position, as well as at least one error mark disposed on the glass ribbon, and is wound up into a glass roll.

Glass roll, product having a glass roll, device and method for the manufacture thereof

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Bodenheim, Germany

Thomas Roßmeier