CN102648164A - Method and apparatus for controlling sheet thickness - Google Patents
Method and apparatus for controlling sheet thickness Download PDFInfo
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- CN102648164A CN102648164A CN2010800459510A CN201080045951A CN102648164A CN 102648164 A CN102648164 A CN 102648164A CN 2010800459510 A CN2010800459510 A CN 2010800459510A CN 201080045951 A CN201080045951 A CN 201080045951A CN 102648164 A CN102648164 A CN 102648164A
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- glass ribbon
- glass
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- thickness
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- 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
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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
- C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
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- 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
- C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- 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)
- Resistance Heating (AREA)
Abstract
The invention relates generally to methods and apparatus for forming a glass sheet. More specifically, the invention relates to a method and an apparatus for controlling the thickness of a glass sheet formed from molten glass.
Description
The application requires the benefit of priority of the U.S. Patent application No.61/251481 of submission on October 14th, 2009.
Technical field
The present invention relates in general to the method and apparatus that is used to make sheet glass (glass sheet).More specifically, the present invention relates to be used for the method and apparatus of the thickness of the sheet glass that control processed by glass metal (molten glass).
Background technology
United States Patent(USP) No. 3,682,609 have described the system of the thickness that is used to control the flat board of being processed by glass metal.At United States Patent(USP) No. 3,682, in 609 the system, glass metal along the opposite side of formed parts to dirty and combine to form sheet glass at the wedge shape root of formed parts.Sheet glass is process between a pair of relative cover, and said relative cover has the antetheca towards sheet glass.Said antetheca is processed by the material with high thermal conductivity, low bulk and low-launch-rate (emissivity) (such as silit).In said cover, be furnished with fluid conduit systems, the nozzle of said fluid conduit systems is positioned at the dorsal part of antetheca with spaced apart relation.Each fluid conduit systems has related fluid meter, and said fluid meter is provided with valve and is connected to manifold.Each fluid conduit systems transmits cooling fluid or heating fluid to the dorsal area of adjacent antetheca.Usually, the fluid of transmission is an air.Between sheet glass and antetheca heat exchange takes place through thermal radiation, so that the thickness of control sheet glass.If the thickness track of sheet glass is illustrated in thick than expection of a certain zone on the width of sheet glass, then the thickness track will promptly cool off thinner region, and quilt be revised through near the zone of the sheet glass the thicker zone of cooling.Fluid conduit systems corresponding to adjacent domain is activated with cooling adjacent domain (that is thinner region).This patent also advises substituting as transmitting a kind of of cooling fluid, the fluid that has heated is sent to the back of antetheca.In this case, the fluid that has heated can be transmitted through the fluid conduit systems corresponding to thicker zone.This will be reduced in the viscosity in the thicker zone, make this zone attenuation then.The fluid that has heated can provide through the electric winding that is associated with fluid conduit systems.
Said system has been used many years, is used to control the thickness of the flat board of being made by glass metal.Although this system is effectively, use this system that some problems are arranged.For example, the cooling fluid (normally air) that is transmitted by fluid conduit systems leaks into the drawing position sometimes, and sheet glass is positioned at this position.Such leakage can cause the not controlled thermal losses from sheet glass, and the thickness in the sheet glass is discontinuous.Said system can not adjust easily and be suitable for digital control and feedback system, and this is robotization control needs.The convection current cooling limitation of the midfeather that has weakened thermal conduction effect that the resolving power of the visual field of said system is used.Because such weakening, the effort of attempting to form tangible hot characteristic is invalid.
Summary of the invention
Therefore, according to an aspect of the present invention, a kind of method of thickness profile of feed glass band is provided.Said method comprises: (A) for a selected glass ribbon that presents the viscosity proterties, find out and have one or more zones that the thickness that departs from is arranged with said target thickness on said; And (B) radiogenic heat is mapped on said one or more zones of said, to be reduced in the viscosity of the glass in said one or more zone.
In some embodiment of first aspect of the present invention, said method further comprises (C) glass ribbon for the different bars that present the viscosity proterties, repeating step (A) and (B).
In some embodiment of first aspect of the present invention, in step (A), the thickness of each in said one or more zones is greater than said target thickness, and in step (B), the thickness of each in said one or more zones is reduced.
In some embodiment of first aspect of the present invention, step (B) comprises a radiation heater is placed as contiguous said, and operates said radiation heater radiogenic heat is mapped on said one or more zone.
In some embodiment of first aspect of the present invention; In step (B); Said radiation heater comprises the radiant heater element of an array, and wherein step (B) further comprises: (D) make the visual field of the adjacent radiation plus heater element in the said array overlapping.
In some embodiment of first aspect of the present invention, in step (D), said radiant heater element is a linear, and tilts with respect to the direct of travel of said glass ribbon.
In some embodiment of first aspect of the present invention, in step (B), said radiation heater has the non-linear shape, so that the radiation visual field Coefficient Maximization between said radiation heater and said one or more zone.
In some embodiment of first aspect of the present invention, said method further comprises (E): through combining to make said glass ribbon to be shaped the separate streams of glass metal at the wedge shape root of a formed parts.
In some embodiment of first aspect of the present invention, in step (B), said radiation heater be positioned at said wedge shape root near.
In some embodiment of first aspect of the present invention, in step (B), said radiation heater is an ir heaters.
According to a second aspect of the invention, a kind of system that is used for the thickness profile of feed glass band is provided.Said system comprises: a formed parts, be used to form a glass ribbon, and said formed parts has a wedge shape root, combines to form said glass ribbon in the separate streams of this wedge shape root glass metal; And a radiation heater, it is arranged the following selection area that is used for selectively radiogenic heat being mapped to said glass ribbon, and said selection area presents the viscosity proterties and has with target thickness has the thickness that departs from.
In some embodiment of second aspect of the present invention, said radiation heater be positioned at said wedge shape root near.
According to a third aspect of the invention we, a kind of method that is used to make sheet glass is provided, has may further comprise the steps:
(i) glass appears under the temperature of viscoelastic behaviour therein, and a glass ribbon with the width that is limited two opposite edges is provided;
(ii), moves in glass said glass ribbon when presenting viscoelastic behaviour; And
(iii) use the said glass ribbon of heater element heats of an array, the power of said plus heater element can be by independent adjusting.
In some embodiment of the third aspect of the invention, step (i) comprises uses isolated tube to form said glass ribbon by the glass melt fusion.
In some embodiment of the third aspect of the invention, step (iii) in, said plus heater element is arranged to has the eclipsed visual field.
In some embodiment of the third aspect of the invention, step (iii) in, said plus heater element heats said band from an edge to another edge discretely on the width of said band.
In some embodiment of the third aspect of the invention, step (iii) comprises:
(iii-1) confirm the variation in thickness of said band in said width;
(iii-2) change in said width according to said thickness and heat said band discretely, make said band be drawn to a basic uniform thickness.
In some embodiment of the third aspect of the invention, in step (iii-2), said plus heater element is more than the heat that applies to the zone with minimum thickness to the heat that the zone that in said width, has the band of maximum ga(u)ge applies.
In some embodiment of the third aspect of the invention, step (iii) in, the array of well heater is a linear array shape basically.
In some embodiment of the third aspect of the invention, step (iii) in, the plus heater element of a said array can apply heat to the whole width of said glass ribbon.
In some embodiment of the third aspect of the invention, step (iii) in, said plus heater element through the irradiation infrared beam apply heat.
In some embodiment of the third aspect of the invention, step (i) comprises uses isolated tube to form said glass ribbon by glass melt, and step (iii) in, said plus heater element is positioned near the root of said isolated tube.
In some embodiment of the third aspect of the invention, step (iii) in, said plus heater element is placed as and makes that said plus heater element applies heat to said glass ribbon before said glass ribbon arrives the root of said isolated tube.
In some embodiment of the third aspect of the invention; Step (iii) in; The plus heater element of an array is placed on each side of said isolated tube, makes that two glass ribbons in the both sides of said isolated tube combine before forming single glass ribbon, to be heated separately at root.
In some embodiment of the third aspect of the invention, step (iii) in, the plus heater element of an array is placed with the glass ribbon below the root of said isolated tube and applies heat.
In some embodiment of the third aspect of the invention, step (iii) in, the plus heater element of an array is placed on each side of said isolated tube, applies heat with each side of the glass ribbon below the root of said isolated tube.
From the following explanation and the claim of enclosing, will understand advantage of the present invention and other aspects.
Description of drawings
Be explanation below about the view in the accompanying drawing.Said view may not be drawn in proportion, and for clear and simple and clear, some characteristic of said view and some figure maybe be exaggerative or schematically illustrate by in proportion.
Fig. 1 is the synoptic diagram that is used to form the system of the glass ribbon with controlled thickness.
Fig. 2 is the side-view of the system of Fig. 1.
Fig. 3 is the sectional view of the 3-3 along the line of system of Fig. 2.
Fig. 4 shows the radiation heater of the radiant heater element with an array.
Fig. 5 shows the radiation heater with the radiant heater element that is arranged an array that is used to eliminate the dead band and is used for the unit that selectivity is operated said radiant heater element.
Fig. 6 is the xsect of the system of Fig. 5, shows overlapping radiation beam.
Fig. 7 shows the radiant heater element with non-linear shape.
Embodiment
To describe the present invention in detail with reference to accompanying drawing now.In this specifies, many details have been provided to provide to thorough of the present invention.But those skilled in the art will understand, and not have some in these details or all also can put into practice the present invention.In other instances, well-known characteristic and/or method steps possibly not be described in detail, in order to avoid unnecessarily fuzzy the present invention.In addition, can use the identical or similar elements of similar or identical reference numerals.
Fig. 1 shows system and the process that is used to form the glass ribbon 113 with controlled thickness.Construct known drop-down formed parts 101 (such as at United States Patent(USP) No. 1,829,641 and 3,338, shown in 696) and comprise the tapered side 103,105 that terminates in wedge shape root 107.Glass ribbon 113 beginning as two streams 109,111 of glass metal along the tapered side 103,105 of formed parts 101 to dirty, and combine to form sheet glass at wedge shape root 107.The stream 109,111 of glass metal forms through following mode, that is, glass metal 115 is sent in the groove 117 of formed parts 101; And allow glass metal 115 to overflow said groove 117 in a known way, such as at United States Patent(USP) No. 1,829; 641 and 3,338, shown in 696.Glass ribbon 113 is pulled out from wedge shape root 107 with the tabular form.Along with glass ribbon 113 is pulled out, glass ribbon 113 coolings make glass change elastic stage into from viscous state (regime).The cooling mode of glass ribbon 113 under viscous state influences the thickness profile of glass ribbon 113 under elastic stage.Inhomogeneous cooling under the viscous state can cause not controlled (that is, the inhomogeneous) thickness under the elastic stage.The process of Fig. 1 is used from the minimizing of the thermal losses of the selection area of glass ribbon 113 and is revised the cooling mode of glass ribbon 113 and the thickness of feed glass band 113, like what will explain hereinafter.
In Fig. 1, near the surface 121 of glass ribbon 113, be provided with a radiation heater 119.Said radiation heater 119 makes radiogenic heat (being marked by line 123) be mapped to the selection area of glass ribbon 113.Below the standard that selective radiation heat is mapped to the zone on it will be discussed.Along with glass ribbon 113 is pulled out from wedge shape root 107, radiogenic heat 123 moves with glass ribbon 113, shown in cross hatched area 125.The marking (imprint) of radiogenic heat on glass ribbon 113 confirms to be heated the width 127 in zone 125.Appropriately be chosen in interval and the geometrical shape and the output of said radiation heater 119 between 121 of radiation heater 119 and surface, be sent to surface 121 with radiogenic heat with desired amount.In Fig. 1, radiation heater 119 is held in place the position that wedge shape root 107 tops can be mapped to radiogenic heat glass ribbon 113.In an alternative arrangement, said radiation heater 119 can be held in place the position that wedge shape root 107 belows or wedge shape root 107 places can be mapped to radiogenic heat glass ribbon 113.In general, radiation heater 119 is placed on it and can radiogenic heat be mapped to the position that glass ribbon 113 presents the zone of viscosity proterties.In general, glass ribbon 113 present the zone of viscosity proterties can be near wedge shape root 107.Second radiation heater (not illustrating separately) can be arranged on the opposite side of glass ribbon 113 and use with first radiation heater, 119 identical modes, so that radiogenic heat is mapped on the glass ribbon 113.
For the thickness of feed glass band 113, select a glass ribbon (width along glass ribbon 113 obtains).Usually, this glass ribbon 113 will be glass ribbon 113 that part of that in forming the process of glass ribbon 113, all is close to said radiation heater 119 at any given time.For the example purpose, Fig. 2 shows the side-view of the system of Fig. 1.In Fig. 2, bar 201 marks by a dotted line, and radiation heater 119 is a relativeness with bar 201.Fig. 3 shows along the sectional view of the system of said 201 Fig. 2 that is got.For bar 201, there is a abnormal area 301 with following thickness, this thickness differs from said 201 target thickness or normal thickness.Usually, said regional 301 are considered to " unusual ", because its thickness that has is greater than said target thickness or normal thickness.Bar 201 can have one or more such abnormal areas usually or not have abnormal area.The process of the thickness of feed glass band 113 comprises any abnormal area of finding out on said 201.Find out that said abnormal area can be included in that active on said 201 is measured or can be based on using one group of particular procedure that the historical data with the parameter acquisition is set.
In case on said 201, find abnormal area, said radiation heater 119 is controlled to radiogenic heat is mapped on the said abnormal area.In the embodiment show in figure 3, radiation heater 119 will be mapped to said abnormal area 301 to radiogenic heat, shown in cross hatched area 303.The radiogenic heat that is sent to said abnormal area 301 will heat said regional 301.This will be reduced in the viscosity in the said abnormal area 301, and reduce the thickness of said abnormal area 301.It can be to make through the thickness of the abnormal area 301 the revised target thickness or the normal thickness of said 201 of coupling now that thickness reduces.Usually such heating will produce the temperature distribution through revising on said 201, and for example, the temperature distribution that warp is revised can be than said abnormal area 301 by more even before radiation heater 119 heating.Like this through revise or more homogeneous temp distribute will be together mobile with said 201 along the direct of travel of glass ribbon 113.Subsequently, another glass ribbon 113 will close on said radiation heater 119.Above-mentioned be used to locate abnormal area and radiogenic heat is mapped to other glass ribbons that the process of said abnormal area can be recycled and reused for said another glass ribbon and close on said radiation heater 119.But this does not also mean that said radiation heater 119 need be a fixed.If need, said radiation heater 119 can be reapposed other parts that have the glass ribbon 113 of abnormal area with thermal treatment, as long as these abnormal areas present the viscosity proterties.
With reference to Fig. 1-3; Through using " directly " radiogenic heat to come the thickness of feed glass band 113 as stated; Can avoid owing to escape of liquid get into to draw the swabbing effect (chimney effect) on the surface of glass ribbon 113 that causes, this is because do not use fluid to come the thickness of feed glass band 113." directly " means that the heat exchange between radiation heater 119 and glass ribbon 113 is not interrupted by structure (such as the antetheca that in the system described in the background technology, uses).Said radiation heater 119 can be placed as very surface near glass ribbon 113 with the maximization heating efficiency.In addition, can make full use of geometrical shape and the radiation heater 119 of radiation heater 119 interval, to realize being used for radiating high resolving power visual field (high-resolution field-of-view) apart from the surface of glass ribbon 113.With reference to Fig. 1-3, said system also helps automatic control, like what will explain below very much.
In Fig. 1-3, radiation heater 119 produces electromagnetic radiation in a wavelength compatible with the absorption characteristic of glass ribbon 113, makes radiogenic heat to be absorbed to realize that viscosity reduces by glass.Usually, said radiation heater 119 will be an infrared radiation heater.Said radiation heater 119 can comprise single radiant heater element, or the radiant heater element of an array.Said radiant heater element can be by refractory metal such as platinum, platinum alloy, tungsten, MoSi
2Deng processing, perhaps process such as SiC by stupalith.Heating unit can adopt thin silk thread (filament wire) (for example, tungsten filament) shape, or adopts transmitter board (for example, ceramic plate) shape.Usually, will comprise by the thread radiant heater element of filament and the wire loop of coiling be used to produce photothermal surface-area with increase.Said radiant heater element can place in the translucent cover (such as quartz cover).Said cover can be coated with reflecting material, is sent to the photothermal amount of glass ribbon 113 with increase.Radiation heater 119 can be electirc radiation well heater or induced radiation well heater.Radiation heater 119 can be the width (203 among Fig. 2) that extends across the width of glass ribbon 113 or can not extend across glass ribbon 113.Many radiation heaters 119 can be set on the width (203 among Fig. 2) of glass ribbon 113, and operation is to be mapped to radiogenic heat on a plurality of abnormal areas.
Fig. 4 shows the radiation heater 119 of the radiant heater element 401 that comprises an array.Said radiant heater element 401 is linear radiant heater elements.Said radiant heater element is spaced apart and aim at the direct of travel of glass ribbon 113, and the direct of travel of said glass ribbon is by arrow 403 indications (in order succinctly in Fig. 4, only to show the relevant portion of glass ribbon 113).Because there is the part (corresponding to the interval between radiant heater element 401 404) that does not receive the hot glass ribbon of direct radiation in aiming at of the direct of travel 403 of interval between radiant heater element 401 and radiant heater element 401 and glass ribbon 113.Said part is called as " dead band ".In order to eliminate the dead band, radiant heater element 401 can be arranged such that their visual field (the perhaps marking of radiogenic heat on glass ribbon 113) is overlapping.Fig. 5 shows this and how to realize.In Fig. 5; Four radiant heater elements 501,503,505,507 are spaced apart and tilt with respect to the direct of travel (being illustrated by arrow 508) of glass ribbon 113; The radiation beam that makes radiant heater element produce is overlapping with the radiation beam of an adjacent radiant heater element generation; For example, the radiation beam that radiant heater element 501 produces can be overlapping with the radiation beam that radiant heater element 503 produces, or the like.Fig. 6 shows eclipsed radiation beam 601,603,605,607, corresponding to radiant heater element 501,503,505,507.Should point out that the density of the cross-hatched of radiation beam is only as the vision aid of distinguishing a radiation beam and next radiation beam.
The radiant heater element of an array can be connected to unit.This is shown in Fig. 5, and wherein radiant heater element 501,503,505,507 is connected to unit 509 (perhaps communicating with unit 509).Unit 509 can be by operation to be switched on or switched off radiant heater element 501,503,505,507 separately.Unit 509 can receive outside input, as shown in 511.The embodiment of outside input 511 can be thickness profile or temperature profile on a glass ribbon 113.Unit 509 can use information confirm that which connection and which in the radiant heater element 501,503,505,507 break off, to be implemented in target thickness or the temperature distribution on said the glass ribbon 113.Should point out; This can be an ongoing process; Wherein measure the thickness profile or the temperature profile of a specific position on glass bar 113, radiant heater element 501,503,505,507 is controlled to based on measured thickness profile or temperature profile heat is sent to that glass ribbon 113 of expection.Can use optical pickocff or thermal sensor to come to measure respectively thickness profile or temperature profile.Also feasible is, visual inspection glass ribbon 113 and determine in the said radiant heater element 501,503,505,507 which to be switched on or switched off.The information that obtains through visual inspection can be used for operation control 509.
Should point out that the radiation heater of describing among Fig. 1 119 can comprise the radiant heater element of a single radiant heater element or an array.System can use a plurality of radiation heaters 119, and perhaps system can use the single radiation heater 119 of the radiant heater element with an array.Radiation heater 119 can have the width of crossing over said glass ribbon 113 width, and perhaps its width can be less than the width of said glass ribbon 113.Under the situation of the radiant heater element that uses an array, can use unit to come in the said at any time radiant heater element of independent control which to move.Said unit also can be used for regulating the output of said radiant heater element.Should point out that radiant heater element is not limited to for example at Fig. 4, the linear radiant heater element shown in 5 and 6.Can use radiant heater element to maximize or increase radiation visual field coefficient (radiation view factor) with non-linear shape.Radiation visual field coefficient is to leave the heat energy of first body surface and the ratio of the heat energy that arrives second object surfaces, considers to confirm from geometrical shape fully.Fig. 7 shows an oval radiant heater element 701 and one radiant heater element 703 arbitrarily.Element 703 is random shapes and is intended to show how the present invention makes shape of himself concrete formation, to be used to solve the shape that those require gauged characteristic.For example, " L " shape element can be placed make vertical section of L can be with respect to wideer, the effect of horizontal section to form concentrated heats with diffusion more.Net result is in asymmetric effect on glass.Usually, the non-linear shape can will be selected by the typical shape in the zone of radiation heater heated glass band based on treating.
Although the present invention is described with reference to a limited number of embodiment, benefit from disclosure text, one of skill in the art will appreciate that and can design other embodiments that do not depart from the disclosed scope of the invention in place like this.Correspondingly, scope of the present invention should only be limited the claim of enclosing.
Claims (26)
1. the method for the thickness profile of a feed glass band comprises:
(A), find out the one or more zones that have the thickness that departs from said target thickness on said for a selected glass ribbon that presents the viscosity proterties; And
(B) radiogenic heat is mapped on said one or more zones of said, to be reduced in the viscosity of the glass in said one or more zone.
2. method according to claim 1, it further comprises:
(C) for the glass ribbon of the different bars that present the viscosity proterties, repeating step (A) and (B).
3. method according to claim 1, wherein in step (A), the thickness of each in said one or more zones is greater than said target thickness, and in step (B), the thickness of each in said one or more zones is reduced.
4. method according to claim 3, wherein step (B) comprises a radiation heater is placed as contiguous said, and operates said radiation heater radiogenic heat is mapped on said one or more zone.
5. method according to claim 4, wherein in step (B), said radiation heater comprises the radiant heater element of an array, and wherein step (B) further comprises:
(D) make the visual field of the adjacent radiation plus heater element in the said array overlapping.
6. method according to claim 5, wherein in step (D), said radiant heater element is rectilinear, and tilts with respect to the direct of travel of said glass ribbon.
7. method according to claim 4, wherein in step (B), said radiation heater has the non-linear shape, so that the radiation visual field Coefficient Maximization between said radiation heater and said one or more zone.
8. method according to claim 4 further may further comprise the steps (E):
(E) through combining to make said glass ribbon to be shaped the separate streams of glass metal at the wedge shape root of a formed parts.
9. method according to claim 8, wherein in step (B), said radiation heater be positioned at said wedge shape root near.
10. method according to claim 4, wherein in step (B), said radiation heater is an ir heaters.
11. a system that is used for the thickness profile of feed glass band comprises:
A formed parts is used to form a glass ribbon, and said formed parts has a wedge shape root, combines to form said glass ribbon in the separate streams of this wedge shape root place glass metal; And
A radiation heater, it is arranged the selection area that is used for selectively radiogenic heat being mapped to said glass ribbon, and said selection area presents the viscosity proterties and has the thickness that departs from target thickness.
12. system according to claim 11, wherein said radiation heater be positioned at said wedge shape root near.
13. a method that is used to make sheet glass may further comprise the steps:
(i) appear under the temperature of viscoelastic behaviour at glass, a glass ribbon with the width that is limited two opposite edges is provided;
(ii), moves in glass said glass ribbon when presenting viscoelastic behaviour; And
(iii) use the said glass ribbon of heater element heats of an array, the power of said plus heater element can be by independent adjusting.
14. method according to claim 13, wherein step (i) comprises that the use isolated tube forms said glass ribbon by the glass melt fusion.
15. according to claim 13 or the described method of claim 14, wherein step (iii) in, said plus heater element is arranged to has the eclipsed visual field.
16. according to any described method in the claim 13 to 15, wherein step (iii) in, said plus heater element heats discretely said band to another edge from an edge on the width of said band.
17. according to any described method in the claim 13 to 16, wherein step (iii) comprises:
(iii-1) confirm the variation in thickness of said band in said width;
(iii-2) in said width, heat said band discretely according to said variation in thickness, make said band be drawn to a basic uniform thickness.
18. method according to claim 17, wherein in step (iii-2), said plus heater element is more than the heat that applies to the zone with minimum thickness to the heat that the zone that in said width, has the band of maximum ga(u)ge applies.
19. according to any described method in the claim 13 to 18, wherein step (iii) in, the array of well heater is a linear array shape basically.
20. according to any described method in the claim 13 to 19, wherein step (iii) in, the plus heater element of a said array applies heat to the whole width of said glass ribbon.
21. according to any described method in the claim 13 to 20, wherein step (iii) in, said plus heater element through the irradiation infrared beam apply heat.
22. according to any described method in the claim 13 to 21, wherein step (i) comprises and uses isolated tube to form said glass ribbon by glass melt, step (iii) in, said plus heater element is positioned near the root of said isolated tube.
23. method according to claim 22, wherein step (iii) in, said plus heater element is placed as and makes that before said glass ribbon arrived the root of said isolated tube, said plus heater element applied heat to said glass ribbon.
24. method according to claim 23; Wherein step (iii) in; The plus heater element of an array is placed on each side of said isolated tube, makes that two glass ribbons in the both sides of said isolated tube combine before forming single glass ribbon, to be heated separately at root.
25. method according to claim 22, wherein step (iii) in, the plus heater element of an array is placed with the glass ribbon below the root of said isolated tube and applies heat.
26. method according to claim 22, wherein step (iii) in, the plus heater element of an array is placed on each side of said isolated tube, applies heat with each side of the glass ribbon below the root of said isolated tube.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25148109P | 2009-10-14 | 2009-10-14 | |
| US61/251,481 | 2009-10-14 | ||
| PCT/US2010/052450 WO2011047008A1 (en) | 2009-10-14 | 2010-10-13 | Method and apparatus for controlling sheet thickness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102648164A true CN102648164A (en) | 2012-08-22 |
| CN102648164B CN102648164B (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080045951.0A Expired - Fee Related CN102648164B (en) | 2009-10-14 | 2010-10-13 | Method and apparatus for controlling sheet thickness |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5698753B2 (en) |
| KR (1) | KR101835157B1 (en) |
| CN (1) | CN102648164B (en) |
| TW (1) | TWI540106B (en) |
| WO (1) | WO2011047008A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105121365A (en) * | 2014-02-21 | 2015-12-02 | 安瀚视特控股株式会社 | Glass plate production method and glass plate production device |
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| JP6638381B2 (en) * | 2015-12-22 | 2020-01-29 | 日本電気硝子株式会社 | Sheet glass manufacturing apparatus and sheet glass manufacturing method |
| JP6940991B2 (en) * | 2017-06-30 | 2021-09-29 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass sheet manufacturing method |
| US20210053858A1 (en) * | 2018-03-06 | 2021-02-25 | Corning Incorporated | Apparatus and method for controlling substrate thickness |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345149A (en) * | 1963-01-16 | 1967-10-03 | Pittsburgh Plate Glass Co | Method of varying the thickness of a glass sheet while on a molten metal bath |
| US3682609A (en) * | 1969-10-06 | 1972-08-08 | Corning Glass Works | Controlling thickness of newly drawn glass sheet |
| US20040197575A1 (en) * | 2003-04-04 | 2004-10-07 | Bocko Peter L. | High-strength laminated sheet for optical applications |
| TWI230144B (en) * | 1999-07-22 | 2005-04-01 | Nh Techno Glass Corp | Glass plate manufacturing method and apparatus for liquid crystal device |
| US20060144091A1 (en) * | 2003-08-29 | 2006-07-06 | Nippon Sheet Glass Company, Limited | Glass melting apparatus and glass melting method |
| CN101012098A (en) * | 2007-01-24 | 2007-08-08 | 河南安彩高科股份有限公司 | Temperature equality device and temperature equality method in glass forming |
| CN101028964A (en) * | 2007-02-08 | 2007-09-05 | 河南安彩高科股份有限公司 | Device and method for controlling glass-board thickness evenness |
| US20080276649A1 (en) * | 2007-05-11 | 2008-11-13 | Park Eunyoung | Isopipe sag control using improved end support conditions |
| CN101374778A (en) * | 2005-12-15 | 2009-02-25 | 布鲁斯技术有限公司 | Overflow downdraw glass forming method and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001031434A (en) | 1999-07-19 | 2001-02-06 | Nippon Electric Glass Co Ltd | Forming of plate glass and forming apparatus |
| JP4821260B2 (en) * | 2005-10-20 | 2011-11-24 | 日本電気硝子株式会社 | Liquid crystal plate glass heating apparatus, liquid crystal plate glass furnace, and liquid crystal plate glass manufacturing method |
| JP5177790B2 (en) * | 2006-10-24 | 2013-04-10 | 日本電気硝子株式会社 | Glass ribbon manufacturing apparatus and manufacturing method thereof |
-
2010
- 2010-10-13 KR KR1020127011889A patent/KR101835157B1/en active IP Right Grant
- 2010-10-13 WO PCT/US2010/052450 patent/WO2011047008A1/en active Application Filing
- 2010-10-13 CN CN201080045951.0A patent/CN102648164B/en not_active Expired - Fee Related
- 2010-10-13 JP JP2012534313A patent/JP5698753B2/en not_active Expired - Fee Related
- 2010-10-14 TW TW099135108A patent/TWI540106B/en not_active IP Right Cessation
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345149A (en) * | 1963-01-16 | 1967-10-03 | Pittsburgh Plate Glass Co | Method of varying the thickness of a glass sheet while on a molten metal bath |
| US3682609A (en) * | 1969-10-06 | 1972-08-08 | Corning Glass Works | Controlling thickness of newly drawn glass sheet |
| TWI230144B (en) * | 1999-07-22 | 2005-04-01 | Nh Techno Glass Corp | Glass plate manufacturing method and apparatus for liquid crystal device |
| US20040197575A1 (en) * | 2003-04-04 | 2004-10-07 | Bocko Peter L. | High-strength laminated sheet for optical applications |
| US20060144091A1 (en) * | 2003-08-29 | 2006-07-06 | Nippon Sheet Glass Company, Limited | Glass melting apparatus and glass melting method |
| CN101374778A (en) * | 2005-12-15 | 2009-02-25 | 布鲁斯技术有限公司 | Overflow downdraw glass forming method and apparatus |
| CN101012098A (en) * | 2007-01-24 | 2007-08-08 | 河南安彩高科股份有限公司 | Temperature equality device and temperature equality method in glass forming |
| CN101028964A (en) * | 2007-02-08 | 2007-09-05 | 河南安彩高科股份有限公司 | Device and method for controlling glass-board thickness evenness |
| US20080276649A1 (en) * | 2007-05-11 | 2008-11-13 | Park Eunyoung | Isopipe sag control using improved end support conditions |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105121365A (en) * | 2014-02-21 | 2015-12-02 | 安瀚视特控股株式会社 | Glass plate production method and glass plate production device |
| CN105121365B (en) * | 2014-02-21 | 2017-09-19 | 安瀚视特控股株式会社 | The manufacture method of glass plate and the manufacture device of glass plate |
| CN105461193A (en) * | 2014-09-30 | 2016-04-06 | 安瀚视特控股株式会社 | Method for making glass substrate for display |
| CN105461193B (en) * | 2014-09-30 | 2018-11-23 | 安瀚视特控股株式会社 | The manufacturing method of glass substrate for display |
| CN108947218A (en) * | 2017-05-22 | 2018-12-07 | 肖特股份有限公司 | Method and apparatus for controlling the thickness of material strips |
| CN108947218B (en) * | 2017-05-22 | 2022-06-24 | 肖特股份有限公司 | Method and device for controlling the thickness of a material web |
| US11912605B2 (en) | 2018-06-28 | 2024-02-27 | Corning Incorporated | Glass articles |
| CN114401929A (en) * | 2019-09-13 | 2022-04-26 | 康宁股份有限公司 | System and method for forming glass ribbon using heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120086709A (en) | 2012-08-03 |
| JP2013508248A (en) | 2013-03-07 |
| TW201125827A (en) | 2011-08-01 |
| KR101835157B1 (en) | 2018-03-06 |
| WO2011047008A1 (en) | 2011-04-21 |
| JP5698753B2 (en) | 2015-04-08 |
| CN102648164B (en) | 2014-07-23 |
| TWI540106B (en) | 2016-07-01 |
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