GB985366A - Method and apparatus for chemically treating glass ribbon or sheet for polishing - Google Patents
Method and apparatus for chemically treating glass ribbon or sheet for polishingInfo
- Publication number
- GB985366A GB985366A GB3400863A GB3400863A GB985366A GB 985366 A GB985366 A GB 985366A GB 3400863 A GB3400863 A GB 3400863A GB 3400863 A GB3400863 A GB 3400863A GB 985366 A GB985366 A GB 985366A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- liquid
- aperture
- pressure
- entrance aperture
- 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
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
- C03C15/02—Surface treatment of glass, not in the form of fibres or filaments, by etching for making a smooth surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
985,366. Treating sheets of glass. PITTSBURGH PLATE GLASS CO. Aug. 28, 1963 [Sept. 20, 1962], No. 34008/63. Heading B2B. [Also in Division Dl] In apparatus for chemically treating both sides of a discrete sheet of glass 10 (e.g. in connection with the polishing of ground plate glass) in which a closed tank 12 of treating liquid is provided with entrance and exit apertures 18, 16 below the level of the liquid, the upper and lower edges of at least the entrance aperture are spaced from the upper and lower surfaces of the sheet and the surface of the liquid is subjected to a reduced pressure, e.g. by a pump P, so that the pressure in the liquid at the entrance aperture is equal to atmospheric and the liquid tends not to run from this aperture. In order that the pressure at the entrance aperture should be equal to atmospheric above and below the sheet, guides 49, 50 (see Fig. 6) over which the sheet slides have upward extensions 52, 54 which together with the ribbon, form a shallow pan into which liquid is continuously pumped by a pump P, the overflow passing to a lower level defined by weirs 56, 58. By arranging that the difference in height between the two levels is equal to the separation of the midpoints of the open slots above and below the sheet the desired equalizing of pressure is effected. In practice the adjustment is such that a slight flow runs from beneath the sheet to prevent air bubbles being trapped below the sheet; to catch this liquid a trough 46 is provided. To prevent fumes from the overflow liquid condensing on the sheet suction tubes 47 are arranged on either side of the ribbon. The upper and lower angles which define the parallel sided entrance aperture are preferably of an alloy. In the form shown the exit aperture 16 is formed as a mechanical squeegee 20 to remove reaction products. Specification 878,594 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22497262A | 1962-09-20 | 1962-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB985366A true GB985366A (en) | 1965-03-10 |
Family
ID=22843006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3400863A Expired GB985366A (en) | 1962-09-20 | 1963-08-28 | Method and apparatus for chemically treating glass ribbon or sheet for polishing |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE637545A (en) |
| GB (1) | GB985366A (en) |
| LU (1) | LU44450A1 (en) |
| NL (1) | NL297764A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029765A1 (en) * | 2004-09-18 | 2006-03-23 | Schott Ag | Method and device for producing flat glass according to the floating method |
| TWI583648B (en) * | 2012-06-06 | 2017-05-21 | Nsc Co Ltd | Chemical grinding equipment |
-
0
- NL NL297764D patent/NL297764A/xx unknown
- BE BE637545D patent/BE637545A/xx unknown
-
1963
- 1963-08-28 GB GB3400863A patent/GB985366A/en not_active Expired
- 1963-09-16 LU LU44450D patent/LU44450A1/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029765A1 (en) * | 2004-09-18 | 2006-03-23 | Schott Ag | Method and device for producing flat glass according to the floating method |
| TWI583648B (en) * | 2012-06-06 | 2017-05-21 | Nsc Co Ltd | Chemical grinding equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| LU44450A1 (en) | 1963-11-28 |
| BE637545A (en) | |
| NL297764A (en) |
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