EP2013149A1 - Apparatus and method for forming a glass substrate with increased edge stability - Google Patents
Apparatus and method for forming a glass substrate with increased edge stabilityInfo
- Publication number
- EP2013149A1 EP2013149A1 EP07756018A EP07756018A EP2013149A1 EP 2013149 A1 EP2013149 A1 EP 2013149A1 EP 07756018 A EP07756018 A EP 07756018A EP 07756018 A EP07756018 A EP 07756018A EP 2013149 A1 EP2013149 A1 EP 2013149A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- forming
- glass
- edge
- wedge
- web portion
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
-
- 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
Definitions
- Molten glass 26 is fed into channel 14 by means of delivery passage 28 communicating with channel 14.
- the feed into channel 14 may be single ended or, if desired, double ended.
- a pair of restricting dams 30 are provided above overflow lips 18 adjacent each end of channel 14 to direct the overflow of the free surface 32 of molten glass 26 over overflow lips 18 as separate streams, and down opposed forming surface portions 20, 22 to root 24 where the separate streams, shown in chain lines, converge to form a ribbon of virgin- surfaced glass 34.
- the ribbon is thereafter drawn by pulling rolls 35.
- a pair of edge directors or correctors 36 is provided at each longitudinal end of the forming wedge so that an edge director extends along the vertical edge of each longitudinal end of the wedge on each side.
- silicate glasses which are used for making display devices wet platinum poorly, in that the glass can completely separate from the platinum surface. Further, silicate glass is highly wetting on some ceramic materials, such as alumina or zircon. Thus, is may be advantageous to at least coat the precious metal (e.g. platinum) web portions with a ceramic material such as alumina and/or zircon, to increase the adhesive forces.
- the web portions may be an integral (e.g. monolithic) part of the forming wedge, in that they are either cast or machined as a part of the forming wedge.
- the web portion may in some cases be manufactured as a separate ceramic component and later attached to the forming wedge.
- G is the mass flow rate over the web portion of the subsequent forming wedge
- L is the vertical height of the converging forming surfaces of the subsequent forming wedge.
- G r e f and L r e f are those same parameters for the existing or previous forming wedge.
- G is typically represented as the average mass flow rate of all the web portions of a forming wedge.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79591406P | 2006-04-28 | 2006-04-28 | |
PCT/US2007/010043 WO2007130298A1 (en) | 2006-04-28 | 2007-04-26 | Apparatus and method for forming a glass substrate with increased edge stability |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2013149A1 true EP2013149A1 (en) | 2009-01-14 |
Family
ID=38353936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07756018A Withdrawn EP2013149A1 (en) | 2006-04-28 | 2007-04-26 | Apparatus and method for forming a glass substrate with increased edge stability |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2013149A1 (en) |
JP (1) | JP5281569B2 (en) |
KR (1) | KR20090016564A (en) |
CN (1) | CN101495417B (en) |
TW (1) | TWI448437B (en) |
WO (1) | WO2007130298A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100889949B1 (en) * | 2008-04-10 | 2009-03-20 | 주식회사 엠엠테크 | Method for slimming glass and slimming system of the same |
JP5657776B2 (en) * | 2011-03-11 | 2015-01-21 | サン−ゴバン セラミックス アンド プラスティクス,インコーポレイティド | Refractory, glass overflow molding block, and method for producing glass body |
CN203159429U (en) * | 2011-03-31 | 2013-08-28 | 安瀚视特控股株式会社 | Glass sheet material manufacturing device as well as forming body |
JP5724552B2 (en) * | 2011-04-01 | 2015-05-27 | 日本電気硝子株式会社 | Thin glass manufacturing equipment |
KR102037046B1 (en) | 2012-01-11 | 2019-10-29 | 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 | Refractory object and process of forming a glass sheet using the refractory object |
JP5850332B2 (en) * | 2012-03-09 | 2016-02-03 | 日本電気硝子株式会社 | Thin glass forming apparatus and method |
US8794034B2 (en) * | 2012-05-29 | 2014-08-05 | Corning Incorporated | Apparatus for forming glass with edge directors and methods |
JP6052624B2 (en) * | 2012-08-24 | 2016-12-27 | 日本電気硝子株式会社 | Sheet glass manufacturing apparatus and sheet glass manufacturing method |
CN107257780A (en) | 2015-02-24 | 2017-10-17 | 圣戈本陶瓷及塑料股份有限公司 | refractory product and preparation method |
CN108349770B (en) * | 2015-11-18 | 2021-07-30 | 康宁股份有限公司 | Method and apparatus for forming glass ribbon |
US9840431B2 (en) * | 2016-01-11 | 2017-12-12 | Corning Incorporated | Methods and apparatuses for supporting forming bodies of glass forming apparatuses |
TWI750256B (en) * | 2016-11-22 | 2021-12-21 | 美商康寧公司 | Forming bodies for forming continuous glass ribbons and glass forming apparatuses comprising the same |
WO2019104039A2 (en) | 2017-11-22 | 2019-05-31 | Corning Incorporated | Apparatuses including edge directors for forming glass ribbons |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3451798A (en) * | 1966-04-04 | 1969-06-24 | Corning Glass Works | Sheet glass edge control device |
US3537834A (en) * | 1968-08-07 | 1970-11-03 | Corning Glass Works | Maintaining sheet glass width |
US3541798A (en) * | 1969-04-18 | 1970-11-24 | Harry Schnabel Jr | Method and structure for shoring a lateral face of an excavation |
JPS63151633A (en) * | 1986-12-15 | 1988-06-24 | Hoya Corp | Device for producing plate glass |
KR100639848B1 (en) * | 2001-12-21 | 2006-10-30 | 코닝 인코포레이티드 | Process for producing sheet glass by the overflow downdraw fusion process |
TWI317352B (en) * | 2005-02-24 | 2009-11-21 | Corning Inc | Apparatua and method for making a glass sheet |
WO2006091389A2 (en) * | 2005-02-24 | 2006-08-31 | Corning Incorporated | Apparatus and method for making a glass sheet |
US7409839B2 (en) * | 2005-04-29 | 2008-08-12 | Corning Incorporated | Method and apparatus for making a glass sheet |
-
2007
- 2007-04-26 WO PCT/US2007/010043 patent/WO2007130298A1/en active Application Filing
- 2007-04-26 TW TW096114911A patent/TWI448437B/en not_active IP Right Cessation
- 2007-04-26 EP EP07756018A patent/EP2013149A1/en not_active Withdrawn
- 2007-04-26 CN CN2007800234021A patent/CN101495417B/en not_active Expired - Fee Related
- 2007-04-26 KR KR1020087029242A patent/KR20090016564A/en not_active Application Discontinuation
- 2007-04-26 JP JP2009507780A patent/JP5281569B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007130298A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2009535290A (en) | 2009-10-01 |
CN101495417A (en) | 2009-07-29 |
CN101495417B (en) | 2012-09-26 |
JP5281569B2 (en) | 2013-09-04 |
WO2007130298A1 (en) | 2007-11-15 |
TWI448437B (en) | 2014-08-11 |
KR20090016564A (en) | 2009-02-16 |
TW200806590A (en) | 2008-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20081107 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
17Q | First examination report despatched |
Effective date: 20090227 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20160610 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20161021 |