US 12,391,595 B2
Apparatus and method for producing glass ribbons
Alexander Glacki, Mainz (DE); Christian Breitbach, Darmstadt (DE); Holger Hunnius, Mainz (DE); Ulrich Lange, Mainz (DE); Wolfgang Munch, Budenheim (DE); Gregor Rösel, Ginsheim-Gustavsburg (DE); Volker Seibert, Hochheim (DE); and Holger Wegener, Alfeld (DE)
Assigned to SCHOTT AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Jul. 24, 2020, as Appl. No. 16/938,074.
Claims priority of application No. 10 2019 120 065.2 (DE), filed on Jul. 24, 2019.
Prior Publication US 2021/0024400 A1, Jan. 28, 2021
Int. Cl. C03B 17/06 (2006.01)
CPC C03B 17/062 (2013.01) [C03B 17/068 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for producing a glass ribbon, comprising:
suspending a guiding body via a mount so that the guiding body is self-supporting at least along a section of a nozzle opening over which a central area of the glass ribbon is formed, the central area having a uniform thickness that is less than a thickness of two edge-side beads of the glass ribbon,
wherein the guiding body is at least partially mounted inside a drawing tank,
wherein the guiding body comprises a resistance body arranged inside the drawing tank and a blade arranged below the resistance body, wherein the resistance body has a width that is greater than a width of the blade,
wherein the drawing tank has portions that define the nozzle opening, and
wherein the mount of the guiding body is located above the nozzle opening and the portions are removable while the guiding body remains on the mount;
feeding a molten glass to the drawing tank;
causing the molten glass to exit the drawing tank from the nozzle opening of the drawing tank in two substreams so that the molten glass runs along a portion of the guiding body protruding out of the nozzle opening;
combining the two substreams at a lower end of the guiding body to form a drawing onion;
drawing the glass ribbon off the drawing onion, wherein the step of drawing of the glass ribbon exerts a tensile force on the guiding body; and
absorbing the tensile force with the mount of the guiding body.