Method for further processing thin glass and thin glass produced by such method

US9908730B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Andreas Ortner · Gau-Algesheim, DE
• Clemens Ottermann · Hattersheim, DE
• Kurt Nattermann · Ockenheim, DE
• Markus Heiss-Chouquet · Bischofsheim, DE
• Rainer Liebald · Nauheim, DE

Key dates

• Filing date: Mar 30, 2016
• Grant date: Mar 6, 2018
• Expiry date: Jul 31, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2801/61
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for processing a thin glass is provided. The thin glass is subjected to a tensile stress σapp smaller thanwherein σa is a mean value of tensile stress at break for fractures in a surface of samples of the thin glass under bending stress, wherein σa is a mean value of tensile stress at break for fractures emanating from an edge of the samples, wherein Lref is an edge length and Aref is a surface area of the samples, wherein Δe and Δa denote standard deviations of the mean values σe and σa, respectively, and wherein Aapp is a surface area of the thin glass, Lapp is a summated edge length of opposite edges of the thin glass, and Φ is a predefined maximum fracture rate within a period of time of at least half a year.