FR2108844A7 - Moulding/tempering glass sheets - of less than equilibrium thickness - Google Patents
Moulding/tempering glass sheets - of less than equilibrium thicknessInfo
- Publication number
- FR2108844A7 FR2108844A7 FR7036786A FR7036786A FR2108844A7 FR 2108844 A7 FR2108844 A7 FR 2108844A7 FR 7036786 A FR7036786 A FR 7036786A FR 7036786 A FR7036786 A FR 7036786A FR 2108844 A7 FR2108844 A7 FR 2108844A7
- Authority
- FR
- France
- Prior art keywords
- glass
- sheet
- thickness
- mould
- molten glass
- 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
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
-
- 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
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/02—Tempering or quenching glass products using liquid
- C03B27/03—Tempering or quenching glass products using liquid the liquid being a molten metal or a molten salt
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Moulding/tempering of glass sheets of less than equilibrium thickness i.e. the thickness to which it will spread under the sole influence of its surface tension and gravity on a non-wetted surface, by (a) periodically introducing a suitable volume of molten glass into the cavity of a mould, not wetted by molten glass and with dimensions and shape as required for the finished sheet and which is placed in an enclosure heated to the temp. of molten glass, (b) modifying the shape of this volume of glass by a forming tool so that it covers the bottom of the mould and is in continuous contact with the surrounding lateral surfaces, in such a way as to create a pre-form, thinner in its central zone and thicker in its marginal zones than the molten sheet to be produced, (c) simultaneously withdrawing the forming tool and establishing a gas pressure above the liquid glass pre-form above atmospheric and such that the sheet of motel glass can be in equilibrium while covering the bottom of the mould, (d) hardening (solidifying) the molten glass sheet to fix its thickness and finally transferring the hardened sheet to another compartment in which it is energetically cooled to ensure that it is tempered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7036786A FR2108844A7 (en) | 1970-10-12 | 1970-10-12 | Moulding/tempering glass sheets - of less than equilibrium thickness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7036786A FR2108844A7 (en) | 1970-10-12 | 1970-10-12 | Moulding/tempering glass sheets - of less than equilibrium thickness |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2108844A7 true FR2108844A7 (en) | 1972-05-26 |
FR2108844B3 FR2108844B3 (en) | 1973-06-29 |
Family
ID=9062605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7036786A Expired FR2108844A7 (en) | 1970-10-12 | 1970-10-12 | Moulding/tempering glass sheets - of less than equilibrium thickness |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2108844A7 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2298516A1 (en) * | 1975-01-27 | 1976-08-20 | Owens Illinois Inc | COOLING SYSTEMS FOR MOLDED GLASS ARTICLES |
-
1970
- 1970-10-12 FR FR7036786A patent/FR2108844A7/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2298516A1 (en) * | 1975-01-27 | 1976-08-20 | Owens Illinois Inc | COOLING SYSTEMS FOR MOLDED GLASS ARTICLES |
Also Published As
Publication number | Publication date |
---|---|
FR2108844B3 (en) | 1973-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |