GB1034332A - Improvements in or relating to the manufacture of flat glass - Google Patents

Improvements in or relating to the manufacture of flat glass

Info

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
Application number
GB3936062A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilkington Group Ltd
Original Assignee
Pilkington Brothers Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL299371D priority Critical patent/NL299371A/xx
Priority to BE638797D priority patent/BE638797A/xx
Priority to NL299373D priority patent/NL299373A/xx
Priority to BE638796D priority patent/BE638796A/xx
Priority to NL134932D priority patent/NL134932C/xx
Application filed by Pilkington Brothers Ltd filed Critical Pilkington Brothers Ltd
Priority to GB3936062A priority patent/GB1034332A/en
Priority to GB3925163A priority patent/GB1034333A/en
Priority to BR15377863A priority patent/BR6353778D0/en
Priority to DE19631471946 priority patent/DE1471946B2/en
Priority to DE19631471945 priority patent/DE1471945A1/en
Priority to SE1136863A priority patent/SE302831B/xx
Priority to FR950981A priority patent/FR1376823A/en
Priority to FR950982A priority patent/FR1394017A/en
Priority to AT832363A priority patent/AT254421B/en
Priority to AT832563A priority patent/AT250601B/en
Priority to JP38054869A priority patent/JPS4833012B1/ja
Priority to ES292608A priority patent/ES292608A1/en
Priority to JP5487063A priority patent/JPS491284B1/ja
Priority to ES292607A priority patent/ES292607A1/en
Priority to US316853A priority patent/US3337322A/en
Priority to US316868A priority patent/US3337319A/en
Publication of GB1034332A publication Critical patent/GB1034332A/en
Expired legal-status Critical Current

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.
GB3936062A 1962-10-17 1962-10-17 Improvements in or relating to the manufacture of flat glass Expired GB1034332A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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