Schott Ag

Rainer Schwertfeger

Holger Wegener

Jürgen Vogt

Thomas Wiegel

Georg Helmut Sparschuh

Gregor Kübart

Reinhard Kassner

Georg Sparschuh

Angelika Ullmann

Michael Maedje

Christian Diekmann

Markus Langer

Lenka Grygarova

Stefan Giehl

Karl-Heinz Schmidt

Dirk Sprenger

A method for the production of glass ribbon portions is provided that includes: transporting a glass ribbon at a velocity v, wherein the velocity vis dependent on the predetermined glass thickness (d), with the application of a tensile stress parallel to the edges of the glass ribbon, in a plane E, and cooling the glass ribbon at a cooling rate that is dependent on the predetermined glass thickness (d), inserting a score on the surface of the glass ribbon in at least one edge area by scoring the glass surface with a scoring tool, wherein the score has an angle a to the transport direction of the glass ribbon, deflecting the glass ribbon in a plane Eto generate a bending stress and separating a glass ribbon portion with the formation of edges by breaking the glass ribbon on the extension of the score running transversely to the glass ribbon.

Device and method for length cutting in ultrathin glasses

A glass roll includes at least one glass film and one intermediate material one on top of the other in at least two layers onto a winding core. The glass film layers are held in place by the intermediate material layers. The glass roll is produced with a method including provision of a glass film, a winding core and a compressible intermediate material. At least one inside layer of the intermediate material is wound onto the winding core. The glass film and the intermediate material are wound onto the winding core in such a manner that the glass film is wound onto the winding core in alternating layers with the intermediate material. The intermediate material and/or the glass film is wound at a tensile stress acting in a longitudinal direction which causes a compression of the intermediate material and holds the glass film end in place on the glass roll.

Pre-stressed glass roll

Titanium oxide containing borosilicate glasses, which have been produced without the use of arsenic and antimony compounds, are provided. An environmentally friendly refining method for providing titanium oxide containing borosilicate glass is also provided. The method includes using oxygen containing selenium compounds as refining agents to provide glasses with good transmittance values in the infrared range and show no disturbing discolorations. The glasses of the present disclosure are particularly suitable for the production of IR light conductors, cover glasses for photo sensors, and UV filters.

Arsenic and antimony free, titanium oxide containing borosilicate glass and methods for the production thereof

Growing community of inventors

Eschershausen, Germany

Rainer Schwertfeger