Patent · US Active

Glass film with specially formed edge, method for producing same, and use thereof

US10040713B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

Schott AG · DE

Inventors

Bernhard Hunzinger · Wackernheim, DE
Doris Moseler · Budenheim, DE
Frank Buellesfeld · Kriftel, DE
Ulrich Lange · Mainz, DE

Key dates

Filing date	Dec 18, 2015
Grant date	Aug 7, 2018
Priority date	—
Expiry date	Apr 5, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B33/091
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for producing a glass film is provided. The method includes: heating a portion of a glass preform so that in the heated portion the glass has a viscosity of less than 109 dPa·s, or drawing a glass from a melt; withdrawing the glass using a drawing device, wherein in case of drawing from a preform the drawn glass film is thinner than the glass preform; heating at least one point by means of a laser, the point being located in an edge region of the drawn glass film that is being formed by withdrawing the glass, wherein at the site of the laser focus the glass has a viscosity of not more than 109 dPa·s before the laser is switched on and wherein heating is performed in such a manner that at least one notch is provided in parallel to the drawing direction.

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