Pre-stressed glass roll

US11090905B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Angelika Ullmann · Barsinghausen, DE
• Georg Sparschuh · Vadodara, IN
• Gregor Kübart · Dresden, DE
• Holger Wegener · Alfeld, DE
• Jürgen Vogt · Oberheimbach, DE
• Rainer Schwertfeger · Eschershausen, DE
• Thomas Wiegel · Alfeld, DE

Key dates

• Filing date: May 14, 2018
• Grant date: Aug 17, 2021
• Expiry date: Dec 1, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24769
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

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.