EP 1218300 A1 20020703 - APPARATUS FOR MAKING A GLASS PREFORM BY FLAME HYDROLYSIS
Title (en)
APPARATUS FOR MAKING A GLASS PREFORM BY FLAME HYDROLYSIS
Title (de)
VORRICHTUNG ZUM HERSTELLEN EINER GLASVORFORM DURCH FLAMMENHYDROLYSE
Title (fr)
APPAREIL DE FABRICATION DE PREFORME DE VERRE PAR HYDROLYSE A LA FLAMME
Publication
Application
Priority
- US 0024456 W 20000901
- US 15229399 P 19990903
Abstract (en)
[origin: WO0117918A1] An apparatus is described, for making a glass preform by flame hydrolysis. The apparatus includes a main deposition burner configured to direct two or more streams of soot-forming reactants and a stream of flame gases into a deposition chamber, in a direction toward a rotating support mandrel, so as to form by flame hydrolysis a glass preform on the mandrel. One or more pairs of auxiliary burners may also be included, for introducing further streams of flame gases, but no streams of soot-forming reactants, toward the glass preform, from opposite lateral sides of the main deposition burner; to provide additional heat when the preform has reached a predetermined size, thereby improving efficiency. The main deposition burner is configured to direct the two or more of the streams of soot-forming reactants to impinge quasi-tangentially toward the mandrel and, further, to direct the stream of flame gases obliquely inwardly toward the two or more streams of soot-forming reactants, to narrow the flame's width along one or both of two orthogonal axes.
IPC 1-7
IPC 8 full level
C03B 8/04 (2006.01); C03B 19/14 (2006.01); C03B 37/014 (2006.01); C03B 37/018 (2006.01); G02B 6/00 (2006.01)
CPC (source: EP KR)
C03B 19/14 (2013.01 - KR); C03B 19/1423 (2013.01 - EP); C03B 37/0142 (2013.01 - EP); C03B 2207/04 (2013.01 - EP); C03B 2207/06 (2013.01 - EP); C03B 2207/08 (2013.01 - EP); C03B 2207/12 (2013.01 - EP); C03B 2207/14 (2013.01 - EP); C03B 2207/18 (2013.01 - EP); C03B 2207/20 (2013.01 - EP); C03B 2207/26 (2013.01 - EP); C03B 2207/54 (2013.01 - EP)
Citation (search report)
See references of WO 0117918A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0117918 A1 20010315; AU 7117900 A 20010410; CN 1367762 A 20020904; EP 1218300 A1 20020703; JP 2003508336 A 20030304; KR 20020029774 A 20020419
DOCDB simple family (application)
US 0024456 W 20000901; AU 7117900 A 20000901; CN 00811126 A 20000901; EP 00959949 A 20000901; JP 2001521667 A 20000901; KR 20027002848 A 20020302