EP 3883895 A1 20210929 - METHOD AND DEVICE FOR PRODUCING THIN GLASS, AND THIN GLASS STRIP
Title (en)
METHOD AND DEVICE FOR PRODUCING THIN GLASS, AND THIN GLASS STRIP
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON DÜNNGLAS SOWIE DÜNNGLASBAND
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR LA FABRICATION DE VERRE MINCE ET BANDE DE VERRE MINCE
Publication
Application
Priority
- DE 102018129349 A 20181121
- EP 2019081875 W 20191120
Abstract (en)
[origin: WO2020104497A1] The problem addressed by the invention is that of simplifying the production of glasses that are very thin, increasing the stability of the production process and thereby also improving the quality of the thin glasses. This aim is achieved, according to the invention, by a method for producing a flat thin glass strip (1), in which method glass (3) is melted and exits from a container (17) guiding the glass melt and is drawn out downward away from the container to form the thin glass strip (1) having a thickness of at most 250 µm while tensile forces acting in the longitudinal direction of the thin glass strip (1) are applied, wherein: the thin glass strip (1) is cooled until the thin glass strip falls below the glass transition temperature Tg; the tensile forces are transferred to the thin glass strip (1) by at least two pairs of drawing rollers (7, 9, 11, 13); the two pairs of drawing rollers (7, 9, 11, 13) are arranged at a distance perpendicularly to the drawing direction in order to grasp the thin glass strip (1) on both sides in the region of the longitudinal edges (23, 25) of the thin glass strip, between two drawing rollers (7, 9, 11, 14) on each side; the thin glass strip (1) does not come into contact with drawing rollers (7, 9, 11, 14) until the thin glass strip has reached a position at which the temperature of the glass is less than or equal to 500°C.
IPC 8 full level
C03B 17/06 (2006.01)
CPC (source: EP KR US)
C03B 17/061 (2013.01 - EP); C03B 17/064 (2013.01 - EP KR US); C03B 17/067 (2013.01 - EP KR); C03B 17/068 (2013.01 - EP KR US); C03B 33/0235 (2013.01 - US); C03C 3/083 (2013.01 - KR); C03C 3/091 (2013.01 - KR); C03C 3/093 (2013.01 - US); Y02P 40/57 (2015.11 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020104497 A1 20200528; CN 113056442 A 20210629; EP 3883895 A1 20210929; JP 2022509134 A 20220120; JP 7413379 B2 20240115; KR 102647478 B1 20240313; KR 20210094571 A 20210729; US 2021269347 A1 20210902
DOCDB simple family (application)
EP 2019081875 W 20191120; CN 201980076208 A 20191120; EP 19809404 A 20191120; JP 2021528356 A 20191120; KR 20217018206 A 20191120; US 202117326443 A 20210521