Process for the thermal tempering of glass

US4516999A · kind A · utility

Assignee

• Jenaer Glaswerk, Schott & Gen. · DE

Inventors

• Werner Kiefer · Ingelheim am Rhein, DE
• Klaus Stetter · Möhrendorf, DE

Key dates

• Filing date: Jun 1, 1982
• Grant date: May 14, 1985
• Expiry date: Jun 1, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B27/028
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process for the thermal tempering of glass wherein the hot glass is immersed in a vessel in which there are two mutually immiscible liquids. The liquid of lower density is above the liquid of higher density. The glass is precooled for a specific time in the liquid of lower density and then is brought into the liquid of higher density.