GB1045803A - Improvements in or relating to the hot working of glass - Google Patents
Improvements in or relating to the hot working of glassInfo
- Publication number
- GB1045803A GB1045803A GB1147064A GB1147064A GB1045803A GB 1045803 A GB1045803 A GB 1045803A GB 1147064 A GB1147064 A GB 1147064A GB 1147064 A GB1147064 A GB 1147064A GB 1045803 A GB1045803 A GB 1045803A
- Authority
- GB
- United Kingdom
- Prior art keywords
- substance
- glass
- vitreous
- graphite
- spraying
- 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
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
- C03B40/02—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it by lubrication; Use of materials as release or lubricating compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B13/00—Rolling molten glass, i.e. where the molten glass is shaped by rolling
- C03B13/16—Construction of the glass rollers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
-
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/02—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Ceramic Products (AREA)
- Glass Compositions (AREA)
- Lubricants (AREA)
Abstract
In a hot glassworking process, a vitreous substance comprising B2O3 is interposed between the hot glass and a mechanical part. The vitreous substance may be applied, e.g. (a) by rubbing a block of the substance against the part; (b) by spraying the powdered substance; or (c) by use of the molten substance, e.g. by spraying, film-coating or immersion. The coating may be a few microns thick. The part may be, e.g. a mould, or a roller, which may be striated or roughened; the part may be made of e.g. stainless steel, graphite or refractory. The viscosity of the glass should be at least 1000 times that of the substance. Exemplified compositions of the substance are (a) 90 mol B2O3 and 10 mol alkali metal oxide, e.g. Na2O or K2O; (b) by weight, SiO2, 16.8%; B2O3, 9.45%; PbO, 72.2%; Al7O3, 1.15%; and (c) B2O3 and 5-15% by weight of graphite, as a frit. Some of the vitreous substance may diffuse into the surface of the glass being worked.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR928261A FR1359782A (en) | 1963-03-18 | 1963-03-18 | Improvement in hot glass working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1045803A true GB1045803A (en) | 1966-10-19 |
Family
ID=8799421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1147064A Expired GB1045803A (en) | 1963-03-18 | 1964-03-18 | Improvements in or relating to the hot working of glass |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE645381A (en) |
| DE (1) | DE1220566B (en) |
| FR (1) | FR1359782A (en) |
| GB (1) | GB1045803A (en) |
| LU (1) | LU45676A1 (en) |
| NL (1) | NL6402803A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7805366A (en) * | 1978-05-18 | 1979-11-20 | Philips Nv | TOOLS FOR HANDLING AND SHAPING GLASS. |
| US5707412A (en) * | 1994-09-30 | 1998-01-13 | Ppg Industries, Inc. | Method of reducing glass sheet marking |
-
1963
- 1963-03-18 FR FR928261A patent/FR1359782A/en not_active Expired
-
1964
- 1964-03-09 DE DEC32358A patent/DE1220566B/en active Pending
- 1964-03-17 LU LU45676D patent/LU45676A1/xx unknown
- 1964-03-17 NL NL6402803A patent/NL6402803A/xx unknown
- 1964-03-18 BE BE645381A patent/BE645381A/xx unknown
- 1964-03-18 GB GB1147064A patent/GB1045803A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1220566B (en) | 1966-07-07 |
| FR1359782A (en) | 1964-04-30 |
| NL6402803A (en) | 1964-09-21 |
| LU45676A1 (en) | 1964-09-17 |
| BE645381A (en) | 1964-09-18 |
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