CN102149646B - Isopipes having improved dimensional stability - Google Patents
Isopipes having improved dimensional stability Download PDFInfo
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- CN102149646B CN102149646B CN2009801336106A CN200980133610A CN102149646B CN 102149646 B CN102149646 B CN 102149646B CN 2009801336106 A CN2009801336106 A CN 2009801336106A CN 200980133610 A CN200980133610 A CN 200980133610A CN 102149646 B CN102149646 B CN 102149646B
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- weir
- hole
- pressure pipe
- outside surface
- structural member
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- 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
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
An isopipe (13) for forming a glass ribbon (19) by a fusion process is provided which comprises a trough (11) and first and second weirs (1,2). Each weir (1,2) has an aperture (35) that extends along at least part of the weir's length. The apertures (35) can be used to cool the interior of the weirs (1,2) and thus reduce their creep rate. Alternatively, the apertures (35) can include structural members (41,42) to stabilize the weirs. In certain embodiments, the structural members (41,42) do not completely fill the apertures (35) thus allowing for weir stabilization through a combination of mechanical support and internal temperature reduction.
Description
Related application
That the application requires to submit on August 29th, 2008 is by name " Isopipes Having Improved Dimensional Stability(have improve dimensional stability etc. pressure pipe) " the right of priority of U.S. Provisional Patent Application 61/092,931.
Technical field
The present invention relates to smelting process make sheet glass etc. pressure pipe, particularly, relate to the apparatus and method of the size change that demonstrates in the pressure pipe use procedure such as a kind of controls.
Definition
For ease of reference, adopted a word such as " pressure pipe (isopipe) " in explanation of the present invention, it is used to describe the former that adopts in smelting process in history.Should be appreciated that the use of this term and be not intended to, also should not be interpreted as limiting the invention to hydrostatic pressing equipment.
Yet as (separately the seeing the summary of the invention part) of setting forth in claim, the present invention is applicable to the former in all types of smelting process, no matter these materials by which kind of material are made and/or processed in which way to the former that uses.
In addition, for convenience, be regarded as comprising etc. pressure pipe (former): 1) comprise the first part on the first and second weirs of equipment, 2) comprise the second section of the wedge-like portion of equipment.Second section also has the first outside surface and the second outside surface, and the first outside surface is the continuity of the first weir outside surface, and the second outside surface is the continuity of the second weir outside surface.Due to this term just for convenience of explanation, the definite position of the transition of using between the first and second parts is not very crucial, can be considered to be in any lower than the bottom, weir and higher than the position of equipment wedge-like portion.
Background technology
For example the manufacturing of the flat-panel monitor of liquid-crystal display (LCD) adopts glass substrate to produce simultaneously a plurality of indicating meters, for example, produces simultaneously six or multi-display more.Substrate width has limited the indicating meter number that can produce on single substrate, therefore wider substrate can increase economic scale.In addition, in order to satisfy the demand to large-sized monitor, display manufacturer needs wider substrate.
In addition, the glass substrate that can use is being sought by these manufacturerss together with the polycrystalline silicon device that need to process under comparatively high temps, particularly need the glass component of high strain-point, and this glass ingredient can be not compressed in display production.This glass needs higher forming temperature usually, therefore needs a kind of glass forming process that can bear high like this temperature.
Smelting process is for the production of one of basic fundamental of sheet glass in glass manufacturing area.For example publish Varshneya, basic 534-540 page the 20th chapter 4.2 joints " sheet glass " of the unorganic glass that Arun K. writes referring to Boston Science Press in 1994.With other method known in the art, to compare with the seam daraf(reciprocal of farad) as float glass process, smelting process can be made the whole and smooth sheet glass of surperficial especially flat.Therefore, smelting process particularly important when the glass substrate of making for the production of liquid-crystal display (LCD).
Smelting process is specially the overflow down draw smelting process, is the commonly assigned United States Patent (USP) 3338696 of Stuart M.Dockerty and 3682609 theme.Fig. 1 is the schematic diagram of method described in these patents.As shown in the figure, this system comprises feeder sleeve 9, and the receiving tank 11 that forms in the pressure pipes 13 such as its Xiang Zai is supplied with melten glass.
After reaching steady state operation, melten glass flows to above-mentioned receiving tank from feeder sleeve, then at the top of both sides overflow by groove, has formed like this two glass ribbons that flow downward, then inwardly flow along isobaric tube outer surface.These two glass ribbons are waiting pressure pipe bottom or root 15 to meet, and melting gets together forms single glass ribbon.Then should send into drawing device (schematically showing with arrow 17) by single glass ribbon, the speed that this drawing device is pulled away from root by glass ribbon is controlled the thickness of single glass ribbon and is therefore controlled the thickness of final sheet glass.The appropriate location of the pressure pipes such as this drawing device is positioned at bottoms far downstream so that single glass ribbon with cooling and hardening before this device contacts.
As shown in Figure 1, the outside surface of final glass ribbon does not contact with any part of isobaric tube outer surface in whole process.On the contrary, the atmosphere around these surfaces only contact.Form the pressure pipes such as internal surface contact of two glass, half band of final glass ribbon, but these internal surfaces in the bottom of waiting pressure pipe molten getting together, they are enclosed in the inside of final glass ribbon body as a result.The outside surface of the final sheet glass that cuts down from glass ribbon like this, just has good performance.
As previously mentioned, the success etc. 13 pairs of smelting process of pressure pipe is vital.Particularly, be very important etc. the dimensional stability of pressure pipe because etc. the variation of pressure pipe geometrical shape can affect the success of whole process.It should be noted that etc. that the pressure pipes such as condition that pressure pipe is used make it be subject to the dimensional change impact.These pressure pipes are usually operated in 1000 ℃ and above hot environment.In addition, these at high temperature work etc. the pressure pipe weight that not only will support self also want the weight of the melten glass of supporting stream in both sides and groove 11, and at least part of tension force that returns etc. pressure pipe when drawing by the melten glass transmission.Depend on the width of sheet glass to be produced, can have 2.0 meters and above unsupported length etc. pressure pipe.
Bear these exacting terms, can pressure pipe 13(so the called after " etc. pressure pipe " such as make by static pressure pieces such as refractory materialss).Particularly, wait the static pressure zircon refractory material be used to smelting process etc. pressure pipe.
Even such high performance material is arranged, in practice, limited its work-ing life etc. the dimensional change of pressure pipe.For example, sink etc. pressure pipe, make not manage to drop to lower than its external bracing end in the middle of bearing length.The pressure pipe root such as edge and dimensional change occurs along pipe weir, top.
In view of the foregoing, can find out need equipment and the method for production sheet glass that can economical and efficient ground application smelting process, and this sheet glass to have larger width and/or the glass of high strain-point consists of by having more.Especially, this such as need to improve at dimensional stability of pressure pipe, thereby extends its work-ing life, therefore reduces the pressure pipe replacement costs such as stop time and reduction.
Summary of the invention
According to first aspect, the invention provides the device (for example, etc. pressure pipe 13) of a kind of employing smelting process molding glass band (19), comprising:
The first part (21) that comprises groove (11) and first, second weir (1,2), there are internal surface (25), upper surface (27) and outside surface (29) in each weir; And
The second section (23) that comprises the first outside surface (31) and the second outside surface (32), the first outside surface (31) is the prolongation of the first weir (1) outside surface (29), and the second outside surface (32) is the prolongation of the second weir (2) outside surface (29).The first and second outside surfaces (31,32) relative to each other are positioned to make at least a portion (33) of second section (23) to have wedge-shaped cross-section;
Wherein each weir (1,2) comprises hole (35):
(ⅰ) extend along at least part of length on weir in this hole;
(ⅱ) this hole (35) at least part of is positioned between the inside and outside surface (25,29) on weir.
According to second aspect, the invention provides a kind of method that employing smelting process is made glass ribbon (19), comprising:
(A) to building mortion (as etc. pressure pipe 13) provide melten glass, building mortion to comprise the first and second weirs (1,2), etc. pressure pipe, each weir has:
(ⅰ) internal surface (25),
(ⅱ) upper surface (27),
(ⅲ) outside surface (29), and
(ⅳ) hole (35), this hole:
(a) extend along the length at least part of weir, and
(b) comprise the hole (35) of at least a portion between the inside and outside surface (25,29) that is positioned at the weir; With
(B) make fluid (as gas or mixed gas or liquid or liquid mixture) flow through hole (35) and come cooling weir (1,2).
In specific embodiment, the hole (35) that is included in weir (1,2) comprises structural member (41,42), all or part of filling orifice of structural member (41,42).Structural member can be solid or hollow.In other embodiments, the building mortion body can also comprise one or more holes (43), and it can comprise structural member (45).
In general introduction of the present invention, Reference numeral used only is used for the purpose help reader, and is not used in and is not interpreted as limitation of the present invention.In general, should be understood that above-mentioned generality explanation and following detailed description are all exemplary example of the present invention, be used to claimed invention that a general introduction or framework are provided.
Other additional function of the present invention and advantage after elaborate, and in the description of this invention, part advantage therefrom reasoning rehearsal draws, and is also apparent.Listing accompanying drawing in is for further understanding the present invention, and is the part of this explanation.Be understandable that disclosed various features of the present invention can arbitrary combination in specification sheets and accompanying drawing.
Description of drawings
Fig. 1 is the schematic isometric of exemplary apparatus structure used in the overflow down draw smelting process that illustrates for the manufacture of sheet glass.
Fig. 2-8th such as illustrates at the schematic section of the typical embodiments of pressure pipe, forms the hole be used for receiving cooling fluid and/or structural member in the weir etc. pressure pipe.
In accompanying drawing, Reference numeral used sees table 1 for details.
Embodiment
As mentioned above, a preferred method producing LC D substrate is to adopt smelting process, wherein by making the melten glass large size ceramic structure of flowing through namely wait pressure pipe to make it form glass ribbon.As time goes on, the size of LCD substrate increases, and present specification (Gen10) is about 2850mm * 3050mm.Each increase of size (width) means the corresponding increase of isobaric length of tube.
Along with to the transfer of making the pressure pipe such as larger, clear and definite challenge has been proposed the ability that obtains the pressure pipe such as longer work-ing life.For present glass ingredient, etc. the common working temperature in pressure pipe weir be approximately 1220 ℃ and more than, this moment bottom working temperature is between 1180 ℃ and 1140 ℃.Refractory materials such as the zircon of the pressure pipes such as this hot conditions can cause experience creep.Therefore etc. the Gen size is larger, and pressure pipe is larger, and the creep of generation is more.
Stress distribution shows, as first order of solution, depends on and makes the intrinsic creep rate of isobaric tube material etc. the absolute amount of deflection (D) of pressure pipe
(unit: 1/hr), and isobaric plumber do the time (t) and etc. pressure pipe length (L) and the height (H), wherein (k) is a constant:
Can find out from this equation, when etc. the material, height of pressure pipe and working hour homogeneous phase simultaneously, double etc. the length of pressure pipe, amount of deflection has increased by 16 times.
The height of the pressure pipes such as increase can increase amount of deflection potentially.Yet, etc. the height of pressure pipe near accessible basic restriction in present isobaric tube apparatus industry.Another kind method is to improve the pressure pressure pipe both sides such as be applied to, so that creep resistance (is seen commonly assigned U.S. Patent application, publication number is US2003/0192349), but this method can be made significant limitation in waiting pressure pipe design, may cause glass flow lower than re-set target.Reducing the overall work temperature is another kind of feasible method, but this will need again to develop the new glass ingredient that can process at a lower temperature.At last, for the production of etc. the creep rate of stupalith of pressure pipe can reduce (see commonly assigned PCT patent, publication number is WO2002/044102) by the exploitation that improves material.Yet, even in this case, following substrate size and etc. the design of pressure pipe will continue to impel stupalith can't obtain sufficiently long work-ing life.
As mentioned above, in operating process, the hottest part of these pressure pipes is the weir normally.As described above, patent WO2002/044102 above-mentioned for example, the creep rate of zircon refractory material (and other high-temperature refractory) raises with temperature and increases.Therefore, with etc. the pressure pipe pipe shaft compare, the weir has the highest creep rate.
In addition, in use, the weir is subject to the power of the downward effect that caused by gravity and the power (bulging force) of the outside effect that causes due to melten glass in isobaric tube seat.In addition, this two power are arranged not only, and, the weir have much smaller than etc. the thickness of pressure pipe pipe shaft, therefore make the weir develop in time and especially experience dimensional instability.
Stoping a possible way of the dimensional change of this sensitivity is to use thicker weir.But, this way for etc. pressure pipe design have significant limitation, may affect glass flow lower than re-set target.
For the depression of pressure pipes such as reducing, proposed by adopt the some of the recommendations in steady arm and hole in waiting pressure pipe pipe shaft.See US Patent No. 3437470; Japanese Unexamined Patent Publication No JP11-246230; Japanese Unexamined Patent Publication No JP2006-298736; Japanese Unexamined Patent Publication No JP2006-321708; And Japanese Unexamined Patent Publication No JP2007-197303.It should be noted that, these referenced patents all do not recognize the raising susceptibility that changes for the weir size be due to: 1) weir is exposed to higher working temperature usually, 2) weir is easy to be subject to the impact of vertical and horizontal distortion power, and 3) with etc. the rest part of pressure pipe to compare the weir relatively thin.Equally, these quote the way that does not all have proposition to address this problem.
The present invention solves the instability problem on weir specially, contains at least a hole in each weir.As preliminary benefit, thereby the hole can be reduced the weight on weir and shared the load that the weir depression produces.
Outside this, in certain embodiments, the hole is used for reducing the temperature of the stupalith inside that makes the weir.For example, can pass through the hole with controllable flow rate lower than the fluid under the controllable temperature of the nominal temperature on weir.As follows, even make the variation of material less on temperature on weir, also can remarkably influenced be arranged to the creep rate of material.
Fluid can be a kind of rare gas element of for example nitrogen, and for example the non-rare gas element of air, suppose that it is not exposed to non-rare gas element or liquid, as water if use molybdenum.If necessary, also can use the mixture of gas or liquid.For some application, flowing fluid ratio gas is more effective, because liquid has higher thermal capacity.
Although fluid can in some cases, may need fluid by the hole of the entrance end of pressure pipes such as originating in from both direction by the hole because the entrance end that melten glass such as enters at the pressure pipe generally than etc. pressure pipe end heat.If fluid is taken away more heat from entrance end, it can help to make in order the thermal gradient along the weir, thereby helps to control glass flow.In addition, fluid enters the hole from entrance end can help to reduce melten glass in the temperature of ingress, and this may be that some application is desired.Adopt a heat exchange structure, fluid can also have a plurality of passages to pass through the hole.For example, fluid can be incorporated into one with the pipe that contains centre hole that is connected of ring on every side in.For example, fluid can flow into centre hole and return by ring.Like this, heat can more effectively be transferred to fluid.Perhaps, fluid can for the first time by ring, pass through centre hole for the second time.Certainly, if necessary, can use more complicated heat exchanger structure.
In other embodiments, the hole is in order to the contained structure member, and structural member is made by the creep rate material lower than the material that forms the weir.Structural member can be solid, also the cross section of filling orifice wholly or in part.Under latter event, in the hole, unfilled part can be used for cooling structure member and weir material simultaneously, and for example, fluid is by unfilled part in the hole, thus by the exposure of structural member and the inwall in hole.
In further embodiment, structural member can be hollow, and its skin is the cross section of filling orifice wholly or in part.In both cases, the hollow parts of structural member can be used for cooling, for example, transmits fluid and leads to structural member inside.If the skin of hollow structural members only has been partially filled the cross section in hole, in the hole, unfilled part also can be used for cooling.
Generally extend along the whole length on weir in the hole, although the one or both ends blind hole can be used for invention reality, for example, when cooling fluid passes through heat exchange structure.This structural member can be included in the weir or exceed outside the weir, and an end or preferred two ends have underwork.
Except the hole in each weir (having or the non-structure member), can comprise one or more holes etc. pressure pipe in pipe shaft, that is, and in the position lower than the weir.As the hole that forms in the weir, the hole that forms in pipe shaft can comprise the structural member of filling orifice wholly or in part.Similar with the hole in the weir, the hole in pipe shaft can be used for the internal cooling of reciprocity pressure pipe with the creep rate of the pressure pipe pipe shaft materials such as reduction.
The weir and etc. the hole in pressure pipe pipe shaft (during use) can be in waiting pressure pipe or preferably arrive base place's boring when waiting pressure pipe to be shaped or original position shaping when making base.
The common process of the pressure pipe ceramic blanks such as manufacturing is the technique of a multi-step.For example, zircon admixtion or other stupalith as prepare the adhesive bonding agent with spraying drying.Then admixtion is placed in a soft bag, vibration makes solids precipitation, and realizes preliminary compacting.Then with sack sealing, and be placed in cold isostatic press and make structure compacting more fully.Then can at high temperature sinter the structure of compacting into ceramic of compact.
Can by with one or more by graphite or other inflammable material, the rod that for example solid or foam are natural or synthetic polymer is made as axle insert isobaric bag next on base substrate manufacturing hole, thereby change such technique.Then this admixtion is poured into and vibrated on every side along rod and make the tightr of batch particle structural arrangement.Then with sack sealing and etc. compression.Then compacted admixtion and rod are put into stove, at first burn rod, then at high temperature carry out sintering.In alternative techniques, at first the admixtion binding agent is burnt, and is secondly the presintering of structure.After being cooled to room temperature, remove rod from base substrate, then high temperature sintering.
There is different size in the hole, and such as in the pressure pipes such as Gen10, the hole dimension scope is from several millimeters to several inches.Usually, when coming the pressure pipe such as cooling inner through the hole by flow, adopt less hole when the hole.As mentioned above, this fluid flow provide a kind of from etc. the method for pressure pipe internal extraction heat, thereby reduce internal temperature and reduce the creep of material.The creep level of the pressure pipes such as the minor alteration of temperature can significantly reduce.For example, as shown in table 2, for zircon, be reduced to 1180 ℃ when temperature from 1250 ℃, creep rate approximately reduces 50%.The amount of required flow will depend on that thermal capacity, the temperature of fluid, the internal temperature of fluid need reduction, and etc. the specific geometry of pressure pipe.Flow velocity for application-specific is easily determined by those skilled in the art based on content disclosed by the invention.
As mentioned above, in certain embodiments, the hole can comprise structural member.These structural member preferably are made of lower than the material of making isobaric tube material creep.For example, for pressure pipes such as zircons, structural member can be by aluminum oxide, silicon nitride, and silicon carbide, molybdenum, or the material such as fiber reinforcing texture forms.If molybdenum bar, preferably in the inert atmosphere of for example nitrogen to rod cladding or coat platinum to reduce oxidation.Even the material of these types all shows low-down creep at 1250 ℃, therefore can for zircon or other refractory materials form etc. pressure pipe extra support is provided.
In the LCD Substrate manufacture, one of advantage that the present invention possesses is the material that sustainable use has been verified, as zircon.This material shown device manufacturers confirms compatible with glass ingredient.The present invention such as has also enlarged at the pressure pipe design window.For example, the height of the pressure pipes such as reduction can reduce depression and produce, and does not affect work-ing life.The cost of overall size two aspects of the pressure pipes itself such as it has reduced and fusion apparatus.Reduce the chance that highly also helps to reduce secondary crystal, as described in commonly assigned PCT patent publication No. 03/055813.
Do not plan to limit by any way invention, the shown embodiment in Fig. 2-8 further illustrates the present invention.
Fig. 2 has shown an embodiment, its contain on weir 1 and 2 porose 35, waiting and adopting hole 43 in the pressure pipe pipe shaft.Hole 35 in weir 1 and 2 is filled by structural member 41 and 42 respectively fully, and hole 43 is filled by structural member 45 fully.
What Fig. 3 showed is the replacement of Fig. 2 embodiment, and wherein the hole in weir 1 and 2 35 is interconnection by another hole 37, and this hole 37 is filled by structural member just as hole 35.This embodiment has also been used the hole 43 of a circular structure, rather than the rectangular configuration in Fig. 2.
Fig. 4 shows is an embodiment that is suitable for the pressure pipe internal portion such as cooling.The hole of 5 less is arranged in this embodiment, and wherein two are positioned at weir section, and namely the hole 35, other 3 in waiting pressure pipe pipe shaft, namely the hole 43.
What Fig. 5 showed is the replacement of embodiment in Fig. 4, wherein again adopts to be suitable for cooling hole.This embodiment is waiting the pressure pipe pipe shaft to adopt a relatively large hole 43, and is provided with slotted eye 35 in weir 1 and 2.
What Fig. 6 showed is the replacement of embodiment in Fig. 5, and wherein structural member 41 and 42 is introduced in hole 35, and structural member 45 is introduced in hole 43.Cooling fluid can flow through the part that is not filled in hole or structural member self to be used for the depression of pressure pipes such as reducing.
Fig. 7 and 8 has shown the hollow structural members that can use ovalize, as shown in the figure.Adopt hollow structural members to have the advantage that reduces structural member weight.Equally, if necessary, cooling fluid can be by the middle portion of this structural member.Whether the shell that should be pointed out that structural member no matter filling orifice, and the hollow parts of this structural member still consists of the not filling part in hole.
On the basis of aforementioned disclosed content, those multiple alter modes that do not break away from the scope of the invention and spirit are all apparent for a person skilled in the art.For example, have vertical side although the present invention such as discloses at the weir of pressure pipe, the weir with inclined side is applicable too, for example, cross-sectional shape be V or Y type etc. pressure pipe, and there is no knuckle on the outside surface of the upper end of these pressure pipe wedge-like portion.Equally, although Fig. 2-8 disclose the pressure pipes such as single, by two or more individual components (can be identical or different material) form etc. pressure pipe also can be applied in actual invention.Following claim is intended to cover embodiment and modification, change herein, and other equivalent substitute mode.
Table 1
| | Parts | |
| 9 | |
|
| 11 | |
|
| 13 | Etc. |
|
| 15 | |
|
| 17 | Schematically show the arrow of drawing |
|
| 19 | |
|
| 21 | First part etc. |
|
| 23 | Second section etc. |
|
| 25 | The internal surface on |
|
| 27 | The upper surface on |
|
| 29 | The outside surface on |
|
| 31 | The first outside surface etc. the pressure pipe |
|
| 32 | The second outside surface etc. the pressure pipe |
|
| 33 | Etc. containing the part of wedge-shaped cross-section in the pressure pipe |
|
| 35 | The hole | |
| 37 | Another hole of trench bottom |
| 41 | The first |
| 42 | The second |
| 43 | |
| 45 | Structural member in additional holes |
Table 2
| Creep rate (1/hr) | Temperature (℃) | The stress that applies (psi) |
| 1.39E-6 | 1250 | 1000（6895KN/m 2 |
| 0.633E-6 | 1180 | 1000（6895KN/m 2 |
Claims (5)
1. device that adopts smelting process molding glass band comprises:
Comprise the first part on groove and first, second weir, there are internal surface, upper surface and outside surface in each weir; And
The second section that comprises the first outside surface and the second outside surface, described the first outside surface is the prolongation of the first weir outside surface, described the second outside surface is the prolongation of the second weir outside surface, and the first and second outside surfaces relative to each other are positioned to make at least a portion of described second section to have wedge-shaped cross-section;
Wherein, each weir comprises the hole:
(i) extend along at least part of length on described weir in described hole;
(ii) described hole is at least part of between the inside and outside surface on described weir.
2. device as claimed in claim 1, is characterized in that, the hole on described the first and second weirs is connected by another hole that is positioned under described groove.
3. device as claimed in claim 1, is characterized in that, this device further comprises the first and second structural member, and described the first structural member is positioned at the hole on described the first weir, and described the second structural member is positioned at the hole on described the second weir.
4. device as claimed in claim 3, is characterized in that, under the working temperature of described device, the material that consists of described the first and second structural member demonstrates still less creep than the material that consists of described weir.
5. device as claimed in claim 3, is characterized in that, described structural member is hollow.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9293108P | 2008-08-29 | 2008-08-29 | |
| US61/092,931 | 2008-08-29 | ||
| PCT/US2009/004923 WO2010024937A2 (en) | 2008-08-29 | 2009-08-28 | Isopipes having improved dimensional stability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102149646A CN102149646A (en) | 2011-08-10 |
| CN102149646B true CN102149646B (en) | 2013-05-22 |
Family
ID=41722188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801336106A Expired - Fee Related CN102149646B (en) | 2008-08-29 | 2009-08-28 | Isopipes having improved dimensional stability |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5613670B2 (en) |
| KR (1) | KR101618390B1 (en) |
| CN (1) | CN102149646B (en) |
| TW (1) | TWI385129B (en) |
| WO (1) | WO2010024937A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI535672B (en) | 2010-05-28 | 2016-06-01 | 康寧公司 | Composite isopipe |
| WO2013032885A1 (en) * | 2011-08-31 | 2013-03-07 | Corning Incorporated | Ceramic forming devices with a honeycomb structure and methods |
| KR102482437B1 (en) * | 2015-02-04 | 2022-12-28 | 코닝 인코포레이티드 | Glassware Forming System |
| US9840431B2 (en) | 2016-01-11 | 2017-12-12 | Corning Incorporated | Methods and apparatuses for supporting forming bodies of glass forming apparatuses |
| JP2019510725A (en) | 2016-04-07 | 2019-04-18 | コーニング インコーポレイテッド | Forming body for forming continuous glass ribbon and glass forming apparatus provided with the same |
| 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 |
| CN112654587B (en) * | 2018-08-10 | 2023-05-16 | 康宁公司 | Apparatus and method for manufacturing glass ribbon |
| CN112566874A (en) * | 2018-08-13 | 2021-03-26 | Ａｇｃ株式会社 | Glass plate manufacturing device and molding member used in glass plate manufacturing device |
| CN110255865B (en) * | 2019-05-07 | 2021-06-29 | 成都光明光电股份有限公司 | Equipment for forming glass tube by internal and external overflow down-drawing and design method thereof |
| WO2022131177A1 (en) * | 2020-12-16 | 2022-06-23 | 日本電気硝子株式会社 | Glass molding apparatus |
| KR20230115289A (en) * | 2020-12-16 | 2023-08-02 | 니폰 덴키 가라스 가부시키가이샤 | glass forming device |
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|---|---|---|---|---|
| WO2005073137A1 (en) * | 2004-01-28 | 2005-08-11 | Corning Incorporated | Horizontal sheet movement control in drawn glass fabrication |
| JP2006298736A (en) * | 2005-04-25 | 2006-11-02 | Nippon Electric Glass Co Ltd | Apparatus for forming plate glass, supporting member for apparatus for forming plate glass and method for forming plate glass |
| JP2008069024A (en) * | 2006-09-13 | 2008-03-27 | Tanaka Kikinzoku Kogyo Kk | Method of manufacturing sheet glass by fusion down draw method |
| CN101528618A (en) * | 2006-10-24 | 2009-09-09 | 日本电气硝子株式会社 | Glass ribbon producing apparatus and process for producing the same |
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| JP5912212B2 (en) * | 2007-08-03 | 2016-04-27 | 株式会社フルヤ金属 | Molding part of glass manufacturing apparatus and method for manufacturing glass molded product |
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2009
- 2009-08-28 JP JP2011525010A patent/JP5613670B2/en not_active Expired - Fee Related
- 2009-08-28 CN CN2009801336106A patent/CN102149646B/en not_active Expired - Fee Related
- 2009-08-28 WO PCT/US2009/004923 patent/WO2010024937A2/en active Application Filing
- 2009-08-28 KR KR1020117006613A patent/KR101618390B1/en not_active IP Right Cessation
- 2009-08-28 TW TW098129189A patent/TWI385129B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005073137A1 (en) * | 2004-01-28 | 2005-08-11 | Corning Incorporated | Horizontal sheet movement control in drawn glass fabrication |
| JP2006298736A (en) * | 2005-04-25 | 2006-11-02 | Nippon Electric Glass Co Ltd | Apparatus for forming plate glass, supporting member for apparatus for forming plate glass and method for forming plate glass |
| JP2008069024A (en) * | 2006-09-13 | 2008-03-27 | Tanaka Kikinzoku Kogyo Kk | Method of manufacturing sheet glass by fusion down draw method |
| CN101528618A (en) * | 2006-10-24 | 2009-09-09 | 日本电气硝子株式会社 | Glass ribbon producing apparatus and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010024937A3 (en) | 2010-05-27 |
| CN102149646A (en) | 2011-08-10 |
| JP2012501289A (en) | 2012-01-19 |
| KR101618390B1 (en) | 2016-05-04 |
| JP5613670B2 (en) | 2014-10-29 |
| TWI385129B (en) | 2013-02-11 |
| WO2010024937A2 (en) | 2010-03-04 |
| KR20110058832A (en) | 2011-06-01 |
| TW201024235A (en) | 2010-07-01 |
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