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Machine translation
1. (WO2004028987) APPARATUS AND METHOD FOR PRODUCING FLOAT GLASS HAVING REDUCED DEFECT DENSITY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/028987    International Application No.:    PCT/US2003/030576
Publication Date: 08.04.2004 International Filing Date: 26.09.2003
Chapter 2 Demand Filed:    19.04.2004    
IPC:
C03B 5/235 (2006.01), C03B 18/18 (2006.01), C03B 18/20 (2006.01), C03C 3/087 (2006.01)
Applicants: PPG INDUSTRIES OHIO, INC. [US/US]; 3800 West 143rd Street, Cleveland, OH 44111 (US)
Inventors: SMITH, Charlene, S.; (US).
PECORARO, George, A.; (US)
Agent: MILES, Jacques, B.; PPG Industries, INC., Intellectual Property Dept., One PPG Place, Pittsburgh, PA 15272 (US).
SIMINERIO, Andrew, C.; PPG Industries, INC., Intellectual Property Dept., One PPG Place, Pittsburgh, PA Pennsylvania 15272 (US).
LEPIANE, Donald, C.; PPG Industries, INC., Intellectual Property Dept., One PPG Place, Pittsburgh, PA Pennsylvania 15272 (US).
WILLIAMSON, John, K.; PPG Industries, INC., Intellectual Property Dept., One PPG Place, Pittsburgh, PA Pennsylvania 15272 (US).
D'AMBROSIO, Felix J.; 2001 Jefferson Davis Highway, Suite 1002, Arlington, VA 22202 (US)
Priority Data:
60/414,516 27.09.2002 US
10/672,026 26.09.2003 US
Title (EN) APPARATUS AND METHOD FOR PRODUCING FLOAT GLASS HAVING REDUCED DEFECT DENSITY
(FR) APPAREIL ET PROCEDE DE PRODUCTION DE VERRE FLOTTE PRESENTANT UNE DENSITE REDUITE DE DEFAUTS
Abstract: front page image
(EN)A float glass chamber and related methods comprising a hot section having an atm osphere in at least the lower plenum comprises less than 3 percent hydrogen base d on volume and a cold section, wherein the boundary line between the hot sectio n and the cold section is where the temperature of the glass falls below a thres hold temperature. The low hydrogen content in the hot section helps in reducing the number of open bottom bubbles, especially when the glass is melted in an oxy-fuel furnace.
(FR)La présente invention se rapporte à une chambre à verre flotté et à des procédés associés. Ladite chambre comporte une section chaude présentant une atmosphère régnant au moins dans la chambre de distribution inférieure et elle contient moins de 3 % en volume d'hydrogène, ainsi qu'une section froide. La ligne limite entre la section chaude et la section froide se situe à l'endroit où la température du verre passe en dessous d'un seuil de température. La faible teneur en hydrogène de la section chaude permet de réduire le nombre de bulles à fond ouvert, particulièrement lorsque le verre est fondu dans un four à oxygène et gaz combustible.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)