WO2002100787A1 - Verfahren zur selektiven beeinflussung der glasdicke bei der herstellung von flachglas mit einem laser und seine vorrichtung - Google Patents
Verfahren zur selektiven beeinflussung der glasdicke bei der herstellung von flachglas mit einem laser und seine vorrichtung Download PDFInfo
- Publication number
- WO2002100787A1 WO2002100787A1 PCT/EP2002/006091 EP0206091W WO02100787A1 WO 2002100787 A1 WO2002100787 A1 WO 2002100787A1 EP 0206091 W EP0206091 W EP 0206091W WO 02100787 A1 WO02100787 A1 WO 02100787A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- laser beam
- glass ribbon
- width
- over
- Prior art date
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
- C03B18/04—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
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B15/00—Drawing glass upwardly from the melt
- C03B15/02—Drawing glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
Definitions
- the invention relates to a method for selectively influencing the glass thickness in the manufacture of flat glass, in which the drawn or floated glass ribbon is passed directly after shaping in the elastic viscosity range to a device that extends across the width of the glass ribbon with constant cooling and wherein the glass ribbon is guided over the Width is heated specifically and individually adjustable.
- a fine correction of these fluctuations in the glass thickness in the case of flat glasses produced using the down-draw method can be carried out with the aid of an over the width of the Glass ribbon varying cooling post can be achieved.
- the glass ribbon is guided past a cooling plate in the elastic viscosity range immediately after shaping, the temperature of which can be specifically adjusted perpendicular to the direction of pulling the glass ribbon.
- a series of air-blowing nozzles are arranged at a horizontal distance of about 25 mm on the back of the cooling plate.
- the volume flow of each air blowing nozzle can be individually adjusted and regulated.
- a temperature profile is established in the cooling plate perpendicular to the direction of drawing of the glass ribbon.
- a disadvantage of this method is, on the one hand, the fact that the distance between the cooling plate and the glass ribbon cannot be less than 10 mm for practical reasons.
- the glass ribbon is selectively cooled by the heat transfer by radiation from the glass ribbon to the cooling plate, this results in local blurring.
- the distance between the air blowing nozzles exposed to air cannot be chosen to be less than 10 mm, which significantly limits the local effectiveness of the air blowing nozzles.
- the constant cooling of the glass ribbon affects its thickness by heating it individually over the width.
- the cooling device which extends across the width of the glass ribbon, is selectively supplied with heat in the form of jets which can be individually adjusted and heated.
- the temperature profile is generated by constant cooling and selective heat supply.
- the quality of the glass ribbon is of crucial importance from the local dissolution of the heating and the heat input into the glass ribbon, and is therefore limited by the reasons mentioned above. It is an object of the invention to design the method of the type mentioned at the outset in such a way that the local heating and application of heat in the glass ribbon and thus the temperature profile for influencing the thickness of the drawn or floated glass ribbon can be set and controlled even more precisely.
- This object is achieved according to the invention in that the heat is supplied locally by means of a laser beam which is guided at high frequency over the width of the glass ribbon and its performance is changed in accordance with the targeted individual heat supply.
- the light energy contained in the laser beam can be very precisely metered and directed so that it can be absorbed directly by glass tape in small selectable areas.
- the temperature profile can be made finer and the influence of the glass ribbon in smaller areas, i.e. H. in finer resolution, which ultimately leads to an improvement in the quality of the drawn or floated glass ribbon.
- the proportion of heat supplied is regulated by the correspondingly selected power of the laser beam.
- the frequency of the laser beam, with which it is moved back and forth across the width of the glass ribbon can be chosen so high that this equates to a quasi-stable supply of heat for the small areas of the glass ribbon under consideration, taking into account the speed of movement of the glass ribbon.
- the dosage of light energy can be made much more precisely. All of this has an advantageous effect on the quality of the drawn or floated glass ribbon.
- the laser beam is generated by a CO 2 laser with a wavelength of 10.6 ⁇ m and is moved over the glass band by means of a scanner.
- the resolution of the selective supply of heat in the glass ribbon is determined in such a way that the laser beam is generated by an optical system, the focus of which comes into effect with approximately 1 mm 2 in the glass ribbon.
- one embodiment is such that the laser beam is guided over the width of 0.5 to 1 m of the glass ribbon at a drawing speed of 0.3 to 10 m / min and a frequency greater than 10 kHz ,
- a device for carrying out the method according to the invention is characterized in addition to the arrangement of a cooling device with a constant cooling effect over the width of the glass ribbon, characterized in that a laser beam can be generated by means of an optical system, which can be moved by means of a scanner with a high scanning frequency across the width of the glass ribbon , with the focus of the laser beam on the glass band covering an area of approximately 1 mm 2 and heating the glass band and the power of the laser beam varying so that a temperature profile is created perpendicular to the direction of drawing of the glass band, which is adapted to the individual, targeted supply of heat.
- the resulting individual heat supply in conjunction with constant cooling, brings a temperature profile across the width of the glass ribbon, so that the measures required to selectively influence the glass thickness can be carried out with sufficient resolution in very small areas of the glass ribbon.
- the configuration is selected such that the optical system with a CO 2 laser generates a laser beam with a wavelength of 10.6 ⁇ m and that the scanner co-uses the laser beam a frequency greater than 10 kHz is moved over a glass ribbon with a width of 0.5 to 1 m, which is drawn or floated at a drawing speed of 0.3 to 10 m / min.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003503560A JP2004528264A (ja) | 2001-06-13 | 2002-06-04 | 板ガラスの製作時にガラス厚に対してレーザを用いて選択的に影響を及ぼすための方法および該方法を実施するための装置 |
KR10-2003-7016147A KR20040008215A (ko) | 2001-06-13 | 2002-06-04 | 레이저를 이용한 평평한 유리판의 제조 동안 유리의강도를 선택적으로 결정하기 위한 방법 및 관련 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128636A DE10128636C1 (de) | 2001-06-13 | 2001-06-13 | Verfahren zur selektiven Beeinflussung der Glasdicke bei der Herstellung von Flachglas und Vorrichtung zur Durchführung des Verfahrens |
DE10128636.8 | 2001-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002100787A1 true WO2002100787A1 (de) | 2002-12-19 |
Family
ID=7688125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/006091 WO2002100787A1 (de) | 2001-06-13 | 2002-06-04 | Verfahren zur selektiven beeinflussung der glasdicke bei der herstellung von flachglas mit einem laser und seine vorrichtung |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2004528264A (de) |
KR (1) | KR20040008215A (de) |
DE (1) | DE10128636C1 (de) |
TW (1) | TWI269782B (de) |
WO (1) | WO2002100787A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10305141A1 (de) * | 2003-02-08 | 2004-08-19 | Eglass Platinum Technology Gmbh | Vorrichtung zur Herstellung von dünnem Flachglas |
WO2008050605A1 (fr) | 2006-10-24 | 2008-05-02 | Nippon Electric Glass Co., Ltd. | Appareil de production de rubans de verre et procédé de production associé |
US8904822B2 (en) | 2012-11-06 | 2014-12-09 | Corning Incorporated | Thickness control of substrates |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1746076A1 (de) * | 2005-07-21 | 2007-01-24 | Corning Incorporated | Verfahren zur Herstellung einer Glasscheibe mit schneller Abkühlung |
DE102005052421A1 (de) * | 2005-11-03 | 2007-05-16 | Schott Ag | Verfahren zur Herstellung von Abdeckgläsern für strahlungsempfindliche Sensoren und Vorrichtung zur Durchführung des Verfahrens |
WO2007069739A1 (ja) | 2005-12-16 | 2007-06-21 | Nippon Electric Glass Co., Ltd. | 無アルカリガラス基板及びその製造方法 |
DE102006003878B4 (de) * | 2006-01-27 | 2010-09-02 | Schott Ag | Verfahren zum Verbessern der Oberflächenqualität von gefloatetem Flachglas |
JP5177790B2 (ja) * | 2006-10-24 | 2013-04-10 | 日本電気硝子株式会社 | ガラスリボンの製造装置及びその製造方法 |
US20090217705A1 (en) * | 2008-02-29 | 2009-09-03 | Filippov Andrey V | Temperature control of glass fusion by electromagnetic radiation |
DE102008063554A1 (de) | 2008-12-05 | 2010-06-10 | Schott Ag | Verfahren und Vorrichtung zur Herstellung von Flachglas mit variierender Dicke |
DE102014002577A1 (de) | 2014-02-26 | 2015-08-27 | Schott Ag | Weißes opakes Glas, zur Verwendung im Gehäuse von elektronischen Geräten inbesondere Smart-Phones, Tablet-PC's und Verfahren zur Herstellung eines derartigen Glases |
DE102014119064A1 (de) | 2014-12-18 | 2016-06-23 | Schott Ag | Glasfilm mit speziell ausgebildeter Kante, Verfahren zu dessen Herstellung sowie dessen Verwendung |
DE102017101808A1 (de) * | 2016-02-04 | 2017-08-10 | Schott Ag | Verfahren zur Dickenkontrolle eines Substrates |
DE102018111543A1 (de) | 2017-05-22 | 2018-11-22 | Schott Ag | Verfahren und Vorrichtung zur Dickenkontrolle eines Materialbands |
CN112088146A (zh) * | 2018-03-06 | 2020-12-15 | 康宁公司 | 控制基板厚度的设备和方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1070330A (en) * | 1964-05-25 | 1967-06-01 | Glaverbel | Apparatus for making sheet glass |
US3694181A (en) * | 1971-06-01 | 1972-09-26 | Ppg Industries Inc | Apparatus for controlling glass fractures |
US4188200A (en) * | 1977-10-26 | 1980-02-12 | Horn Hannes S | Method and apparatus for production of plate glass |
JPS58172238A (ja) * | 1982-03-31 | 1983-10-11 | Toshiba Corp | ガラスの加工処理方法 |
FR2759310A1 (fr) * | 1997-02-13 | 1998-08-14 | Essilor Int | Procede pour le polissage au laser d'une piece en verre avec prechauffage de celle-ci, et appareillage correspondant |
US5987923A (en) * | 1997-03-29 | 1999-11-23 | Schott Glas | Process and apparatus for hot forming precision structures in flat glass |
-
2001
- 2001-06-13 DE DE10128636A patent/DE10128636C1/de not_active Expired - Fee Related
-
2002
- 2002-06-04 JP JP2003503560A patent/JP2004528264A/ja active Pending
- 2002-06-04 KR KR10-2003-7016147A patent/KR20040008215A/ko not_active Application Discontinuation
- 2002-06-04 WO PCT/EP2002/006091 patent/WO2002100787A1/de active Application Filing
- 2002-06-10 TW TW091112523A patent/TWI269782B/zh not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1070330A (en) * | 1964-05-25 | 1967-06-01 | Glaverbel | Apparatus for making sheet glass |
US3694181A (en) * | 1971-06-01 | 1972-09-26 | Ppg Industries Inc | Apparatus for controlling glass fractures |
US4188200A (en) * | 1977-10-26 | 1980-02-12 | Horn Hannes S | Method and apparatus for production of plate glass |
JPS58172238A (ja) * | 1982-03-31 | 1983-10-11 | Toshiba Corp | ガラスの加工処理方法 |
FR2759310A1 (fr) * | 1997-02-13 | 1998-08-14 | Essilor Int | Procede pour le polissage au laser d'une piece en verre avec prechauffage de celle-ci, et appareillage correspondant |
US5987923A (en) * | 1997-03-29 | 1999-11-23 | Schott Glas | Process and apparatus for hot forming precision structures in flat glass |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 003 (C - 203) 7 January 1984 (1984-01-07) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10305141A1 (de) * | 2003-02-08 | 2004-08-19 | Eglass Platinum Technology Gmbh | Vorrichtung zur Herstellung von dünnem Flachglas |
WO2008050605A1 (fr) | 2006-10-24 | 2008-05-02 | Nippon Electric Glass Co., Ltd. | Appareil de production de rubans de verre et procédé de production associé |
EP2077254A1 (de) * | 2006-10-24 | 2009-07-08 | Nippon Electric Glass Co., Ltd. | Vorrichtung und verfahren zur herstellung eines glasbands |
EP2077254A4 (de) * | 2006-10-24 | 2010-04-07 | Nippon Electric Glass Co | Vorrichtung und verfahren zur herstellung eines glasbands |
EP2277835A1 (de) * | 2006-10-24 | 2011-01-26 | Nippon Electric Glass Co., Ltd. | Verfahren zur Herstellung eines Glasbands |
US8904822B2 (en) | 2012-11-06 | 2014-12-09 | Corning Incorporated | Thickness control of substrates |
Also Published As
Publication number | Publication date |
---|---|
JP2004528264A (ja) | 2004-09-16 |
DE10128636C1 (de) | 2002-08-01 |
KR20040008215A (ko) | 2004-01-28 |
TWI269782B (en) | 2007-01-01 |
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