GB1034332A - Improvements in or relating to the manufacture of flat glass - Google Patents
Improvements in or relating to the manufacture of flat glassInfo
- Publication number
- GB1034332A GB1034332A GB3936062A GB3936062A GB1034332A GB 1034332 A GB1034332 A GB 1034332A GB 3936062 A GB3936062 A GB 3936062A GB 3936062 A GB3936062 A GB 3936062A GB 1034332 A GB1034332 A GB 1034332A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- molten metal
- hydrogen
- gas
- region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Glass Melting And Manufacturing (AREA)
- Cosmetics (AREA)
Abstract
In the manufacture of flat glass during which the glass is in contact with a molten metal a protective atmosphere is maintained above the molten metal comprising a major portion (i.e. more than 50% by volume) of a gas which is inert or substantially inert at the temperature existing above the molten metal, and a proportion of a reducing gas to react with any oxygen present in the atmosphere over the molten metal, and thereby to inhibit reaction of contaminants at the surface of the molten metal. In the manufacture of flat glass wherein a ribbon of glass 28 (Fig. 1, not shown), is advanced along the surface of a bath of molten metal 12 the molten metal, e.g. tin, is contained within a tank 13, 14, 15, and above the glass is a roof structure with end walls 18 and 19 terminating near the glass surface, and an intermediate wall 27 such that there are headspaces defined above the glass. A further roof 24 enclosed the inlet to the bath. Inlet pipes 20a, 20b, 20c allow for the passage of an inert gas into the headspaces above the glass surface. It is preferable that the gas compositions are nitrogen or argon admixed with 2 to 8% of hydrogen in the inlet region, 3 to 10% of hydrogen in the region between walls 18 and 27, and 0.25 to 3% of hydrogen in the outlet region. The presence of the hydrogen causes any contaminants in the protective atmosphere, e.g. oxygen and sulphur, to react therewith in preference to the molten tin at the surface thereof. The hydrogen may be passed through the molten tin prior to its entering the headspaces. A catalyst may be contained in the outlet headspace, and also the protective gas in this region may be specially preheated.
Priority Applications (21)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL299371D NL299371A (en) | 1962-10-17 | ||
BE638797D BE638797A (en) | 1962-10-17 | ||
NL299373D NL299373A (en) | 1962-10-17 | ||
BE638796D BE638796A (en) | 1962-10-17 | ||
NL134932D NL134932C (en) | 1962-10-17 | ||
GB3936062A GB1034332A (en) | 1962-10-17 | 1962-10-17 | Improvements in or relating to the manufacture of flat glass |
GB3925163A GB1034333A (en) | 1962-10-17 | 1963-10-04 | Improvements in or relating to the manufacture of flat glass |
BR15377863A BR6353778D0 (en) | 1962-10-17 | 1963-10-07 | FLAT GLASS MANUFACTURING PROCESS AND APPLIANCE |
DE19631471946 DE1471946B2 (en) | 1962-10-17 | 1963-10-15 | Method and device for the production of flat glass |
DE19631471945 DE1471945A1 (en) | 1962-10-17 | 1963-10-15 | Process for the production of flat glass |
SE1136863A SE302831B (en) | 1962-10-17 | 1963-10-16 | |
FR950981A FR1376823A (en) | 1962-10-17 | 1963-10-17 | Improvements in processes for the manufacture of flat glass |
FR950982A FR1394017A (en) | 1962-10-17 | 1963-10-17 | Improvements to processes and devices for the manufacture of flat glass |
AT832363A AT254421B (en) | 1962-10-17 | 1963-10-17 | Method and device for the production of flat glass |
AT832563A AT250601B (en) | 1962-10-17 | 1963-10-17 | Process for the production of flat glass |
JP38054869A JPS4833012B1 (en) | 1962-10-17 | 1963-10-17 | |
ES292608A ES292608A1 (en) | 1962-10-17 | 1963-10-17 | Flat glass production method (Machine-translation by Google Translate, not legally binding) |
JP5487063A JPS491284B1 (en) | 1962-10-17 | 1963-10-17 | |
ES292607A ES292607A1 (en) | 1962-10-17 | 1963-10-17 | Method of manufacture of flat glass (Machine-translation by Google Translate, not legally binding) |
US316853A US3337322A (en) | 1962-10-17 | 1963-10-17 | Method of manufacture of flat glass with reducing atmosphere |
US316868A US3337319A (en) | 1962-10-17 | 1963-10-17 | Method and apparatus for purifying the molten bath of a glass sheet forming operation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3936062A GB1034332A (en) | 1962-10-17 | 1962-10-17 | Improvements in or relating to the manufacture of flat glass |
GB3925163A GB1034333A (en) | 1962-10-17 | 1963-10-04 | Improvements in or relating to the manufacture of flat glass |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1034332A true GB1034332A (en) | 1966-06-29 |
Family
ID=26264047
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3936062A Expired GB1034332A (en) | 1962-10-17 | 1962-10-17 | Improvements in or relating to the manufacture of flat glass |
GB3925163A Expired GB1034333A (en) | 1962-10-17 | 1963-10-04 | Improvements in or relating to the manufacture of flat glass |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3925163A Expired GB1034333A (en) | 1962-10-17 | 1963-10-04 | Improvements in or relating to the manufacture of flat glass |
Country Status (9)
Country | Link |
---|---|
JP (2) | JPS491284B1 (en) |
AT (1) | AT254421B (en) |
BE (2) | BE638797A (en) |
BR (1) | BR6353778D0 (en) |
DE (2) | DE1471946B2 (en) |
ES (1) | ES292608A1 (en) |
GB (2) | GB1034332A (en) |
NL (3) | NL299371A (en) |
SE (1) | SE302831B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2272896A (en) * | 1992-11-20 | 1994-06-01 | Libbey Owens Ford Co | Method of introducing protective atmosphere gases into a glass forming chamber |
GB2338953A (en) * | 1998-06-30 | 2000-01-12 | Harold Rawson | Making glass articles using high conductivity gases |
WO2004028987A1 (en) * | 2002-09-27 | 2004-04-08 | Ppg Industries Ohio, Inc. | Apparatus and method for producing float glass having reduced defect density |
GB2401362A (en) * | 2003-04-28 | 2004-11-10 | Noel Warner | Method for eliminating top speck on float glass |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1107884A (en) * | 1964-06-23 | 1968-03-27 | Pilkington Brothers Ltd | Improvements in or relating to flat glass |
DE102008041661B4 (en) * | 2008-08-28 | 2011-12-08 | Schott Ag | Process for the production of flat glass and float bath apparatus |
KR101305592B1 (en) * | 2011-07-20 | 2013-09-09 | 아사히 가라스 가부시키가이샤 | Method for producing float glass |
JP6206179B2 (en) * | 2013-12-27 | 2017-10-04 | 日本電気硝子株式会社 | Molten glass supply apparatus and glass plate manufacturing apparatus |
WO2019104039A2 (en) | 2017-11-22 | 2019-05-31 | Corning Incorporated | Apparatuses including edge directors for forming glass ribbons |
-
0
- NL NL299373D patent/NL299373A/xx unknown
- BE BE638796D patent/BE638796A/xx unknown
- NL NL134932D patent/NL134932C/xx active
- BE BE638797D patent/BE638797A/xx unknown
- NL NL299371D patent/NL299371A/xx unknown
-
1962
- 1962-10-17 GB GB3936062A patent/GB1034332A/en not_active Expired
-
1963
- 1963-10-04 GB GB3925163A patent/GB1034333A/en not_active Expired
- 1963-10-07 BR BR15377863A patent/BR6353778D0/en unknown
- 1963-10-15 DE DE19631471946 patent/DE1471946B2/en not_active Withdrawn
- 1963-10-15 DE DE19631471945 patent/DE1471945A1/en active Pending
- 1963-10-16 SE SE1136863A patent/SE302831B/xx unknown
- 1963-10-17 JP JP5487063A patent/JPS491284B1/ja active Pending
- 1963-10-17 JP JP38054869A patent/JPS4833012B1/ja active Pending
- 1963-10-17 ES ES292608A patent/ES292608A1/en not_active Expired
- 1963-10-17 AT AT832363A patent/AT254421B/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2272896A (en) * | 1992-11-20 | 1994-06-01 | Libbey Owens Ford Co | Method of introducing protective atmosphere gases into a glass forming chamber |
GB2338953A (en) * | 1998-06-30 | 2000-01-12 | Harold Rawson | Making glass articles using high conductivity gases |
WO2004028987A1 (en) * | 2002-09-27 | 2004-04-08 | Ppg Industries Ohio, Inc. | Apparatus and method for producing float glass having reduced defect density |
CN100339321C (en) * | 2002-09-27 | 2007-09-26 | Ppg工业俄亥俄公司 | Apparatus and method for producing float glass having reduced defect density |
GB2401362A (en) * | 2003-04-28 | 2004-11-10 | Noel Warner | Method for eliminating top speck on float glass |
GB2401362B (en) * | 2003-04-28 | 2006-03-01 | Noel Warner | Apparatus and method for eliminating top speck on float glass |
Also Published As
Publication number | Publication date |
---|---|
BE638796A (en) | |
BE638797A (en) | |
JPS4833012B1 (en) | 1973-10-11 |
JPS491284B1 (en) | 1974-01-12 |
NL134932C (en) | |
BR6353778D0 (en) | 1973-04-19 |
AT254421B (en) | 1967-05-26 |
NL299373A (en) | |
SE302831B (en) | 1968-08-05 |
GB1034333A (en) | 1966-06-29 |
NL299371A (en) | |
DE1471946B2 (en) | 1969-10-30 |
DE1471946A1 (en) | 1969-05-08 |
ES292608A1 (en) | 1964-03-01 |
DE1471945B2 (en) | 1969-10-09 |
DE1471945A1 (en) | 1969-02-20 |
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