Method and device for curving and tempering a glass sheet

US6574992B1 · kind B1 · utility

Assignee

• SAINT-GOBAIN GLASS FRANCE · FR

Inventors

• Hans-Werner Kuster · Aachen, DE
• Werner Diederen
• Knut Dahlhoff · Aachen, DE
• Karl-Josef Ollfisch · Aachen, DE
• Wilfried Korsten · Heinsberg, DE

Key dates

• Filing date: Nov 20, 2000
• Grant date: Jun 10, 2003
• Expiry date: Nov 20, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B40/005
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

During a process for bending and quenching a window pane, the latter is bent to the desired shape using a forming frame. Next, by means of this same forming frame, the entire surface of both sides of the bent window pane is rapidly cooled, in a quenching station which follows the bending station, by blowing cold air using blowing boxes provided with blowing nozzles. While the entire surface is being rapidly cooled, the edge regions of the window pane which rest on the forming frame are subjected to a blast of additional cold air by the suitable supply of compressed air to the openings passing through the forming frame.