Apparatus and method for producing glass ribbons

US12129197B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Alexander Glacki · Mainz, DE
• Christian Breitbach · Darmstadt, DE
• Holger Hunnius · Mainz, DE
• Ulrich Lange · Mainz, DE
• Wolfgang Münch · Bubenheim, DE
• Gregor Rösel · Ginsheim-Gustavsburg, DE
• Holger Wegener · Alfeld, DE

Key dates

• Filing date: Jul 24, 2020
• Grant date: Oct 29, 2024
• Expiry date: Nov 17, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/57
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An apparatus is provided for producing thin glass ribbons from molten glass. The apparatus includes a drawing tank, a direct heater, and an indirect heater. The drawing tank has a lower elongated nozzle opening through which the molten glass can exit downwards. The direct heater has one or more heating circuits operable to heat the drawing tank in a first heating zone. The direct heater has a power source for each on the heating circuits. Each heating circuit has connections to connected to a wall of the drawing tank so that current from the power source flows through at least a portion of the wall and heats the wall. Each heating circuit also includes current-carrying portions of the wall. The indirect heater has one or more heating elements to heat the drawing tank in a second heating zone.