EP 1924532 A1 20080528 - METHOD FOR PREVENTING SURFACE DEFECTS IN FLOATING FLAT GLASS, FLAT GLASS AND USE THEREOF
Title (en)
METHOD FOR PREVENTING SURFACE DEFECTS IN FLOATING FLAT GLASS, FLAT GLASS AND USE THEREOF
Title (de)
VERFAHREN ZUR VERMEIDUNG VON OBERFLÄCHENDEFEKTEN BEI GEFLOATETEM FLACHGLAS SOWIE DAS FLACHGLAS UND SEINE VERWENDUNG
Title (fr)
PROCEDE POUR EVITER DES DEFAUTS SUPERFICIELS DANS DU VERRE PLAT FLOTTE, VERRE PLAT ET SON UTILISATION
Publication
Application
Priority
- DE 2006001434 W 20060817
- DE 102005039378 A 20050819
Abstract (en)
[origin: WO2007019840A1] The invention relates to a method for preventing surface deposition and/or crater-shaped hole defects during the production of floating flat glass. Said method consists of producing a glass melt, purifying said melt and floating said purified melt on the surface of the liquid metal under an inert gas atmosphere. Said method is characterised in that it i) defines the hydrogen content in the inert gas to a maximum of 7 Vol. % and ii) adjusts the oxygen partial pressure in the floating gas melt a) by means of a metal, whereby the reaction enthalpy for the oxidation ?G° (Me /Me<SUB>x</SUB>O<SUB>y</SUB>7) is > -575,8 + 0.21 T[K] or b) by means of a metal whereby the reaction enthalpy for the oxidation ?G° (Me /Me<SUB>x</SUB>O<SUB>y</SUB>) is < -575.8 + 0.21 T[K].
IPC 8 full level
C03B 5/225 (2006.01); C03B 18/02 (2006.01); C03B 18/20 (2006.01)
CPC (source: EP KR)
C03B 5/225 (2013.01 - KR); C03B 18/02 (2013.01 - KR); C03B 18/20 (2013.01 - EP KR); C03C 3/091 (2013.01 - EP)
Citation (search report)
See references of WO 2007019840A1
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
DE 102005039378 A1 20070222; EP 1924532 A1 20080528; JP 2009504559 A 20090205; KR 20080038231 A 20080502; WO 2007019840 A1 20070222
DOCDB simple family (application)
DE 102005039378 A 20050819; DE 2006001434 W 20060817; EP 06775863 A 20060817; JP 2008526369 A 20060817; KR 20087006527 A 20080318