Patent · US Active

Method of continuously producing flat glass by rolling

US7934392B2 · kind B2 · utility

2Cited by

9References

9Claims

0Family size

Assignee

Schott AG · DE

Inventors

Norbert Greulich-Hickmann · Mainz, DE
Andreas Langsdorf · Ingelheim am Rhein, DE
Ulrich Lange · Mainz, DE
Fritz Schroeder · Houston, US

Key dates

Filing date	Jul 13, 2005
Grant date	May 3, 2011
Priority date	—
Expiry date	Apr 26, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B40/04
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The method of continuously producing flat glass includes rolling a fluid glass sheet between upper and lower shaping rollers to shape and calibrate the glass sheet, generating a respective gas cushion between the fluid glass sheet and each shaping roller from a liquid, controlling the pressure of the gas cushion between the fluid glass sheet and the upper shaping roller to completely prevent contact of the glass sheet with the upper shaping roller, controlling the pressure of the gas cushion between the fluid glass sheet and the lower shaping roller to form a linear contact area between the fluid glass sheet and the lower shaping roller and controlling the contact area width according to speed and viscosity of the glass sheet in order to transport it without slipping and reduce cooling path length.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.