EP 3697734 A1 20200826 - GRAVITY-BENDING GLASS IN THE PRESENCE OF A RADIATIVE COUNTER-FRAME
Title (en)
GRAVITY-BENDING GLASS IN THE PRESENCE OF A RADIATIVE COUNTER-FRAME
Title (de)
SCHWERKRAFTBIEGEN VON GLAS IN GEGENWART EINES STRAHLUNGSGEGENRAHMENS
Title (fr)
BOMBAGE DE VERRE PAR GRAVITE EN PRESENCE D'UN CONTRE-SQUELETTE RADIATIF
Publication
Application
Priority
- FR 1759859 A 20171019
- FR 1759862 A 20171019
- FR 2018052597 W 20181018
Abstract (en)
[origin: WO2019077278A1] The invention relates to a device and a method for gravity-bending a glass sheet or stack of glass sheets, referred to as the glass, involving gravity-bending the glass on a frame that comprises a contact track for bearing the glass in the peripheral zone of its lower main face, said contact track having concave curvatures at each of the sides of said frame, and a counter-frame that comprises a metal bar which, as bending takes place, is at a distance d from the edge or from the peripheral zone of the upper main face of the glass, wherein said peripheral zone of a main face is the zone between the glass rim and a distance of 50 mm from the glass rim of the main face in question, and d is in the range from 0.1 to 50 mm. The invention is particularly useful for bending thin glass and for reducing the ripples that tend to form towards the middle of the sides.
IPC 8 full level
C03B 23/025 (2006.01); C03B 23/03 (2006.01)
CPC (source: EP US)
C03B 23/0256 (2013.01 - EP US); C03B 23/03 (2013.01 - EP US); C03B 40/005 (2013.01 - EP US); C03B 2225/02 (2013.01 - EP US)
Citation (search report)
See references of WO 2019077278A1
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 2019077278 A1 20190425; CN 109937192 A 20190625; CN 109937192 B 20220308; CN 109952276 A 20190628; CN 109952276 B 20220308; EP 3697733 A1 20200826; EP 3697734 A1 20200826; US 2020346965 A1 20201105; US 2021188686 A1 20210624; WO 2019077277 A1 20190425
DOCDB simple family (application)
FR 2018052597 W 20181018; CN 201880003850 A 20181018; CN 201880003853 A 20181018; EP 18812230 A 20181018; EP 18814988 A 20181018; FR 2018052596 W 20181018; US 201816755017 A 20181018; US 201816755047 A 20181018