WO2022215426A1 - ガラス板の製造装置、及びガラス板の製造方法 - Google Patents
ガラス板の製造装置、及びガラス板の製造方法 Download PDFInfo
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- WO2022215426A1 WO2022215426A1 PCT/JP2022/010507 JP2022010507W WO2022215426A1 WO 2022215426 A1 WO2022215426 A1 WO 2022215426A1 JP 2022010507 W JP2022010507 W JP 2022010507W WO 2022215426 A1 WO2022215426 A1 WO 2022215426A1
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- WIPO (PCT)
- Prior art keywords
- glass
- cooling
- glass ribbon
- support roller
- roller
- Prior art date
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- 239000011521 glass Substances 0.000 title claims abstract description 147
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 89
- 239000006060 molten glass Substances 0.000 claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 12
- 239000002826 coolant Substances 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000005060 rubber Substances 0.000 claims description 11
- 238000010583 slow cooling Methods 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 5
- 239000002344 surface layer Substances 0.000 description 6
- 238000007500 overflow downdraw method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003280 down draw process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 238000006124 Pilkington process Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/183—Construction of the conveyor rollers ; Materials, coatings or coverings thereof specially adapted for thermal adjustment of the rollers, e.g. insulating, heating, cooling thereof
- C03B35/184—Cooling
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/181—Materials, coatings, loose coverings or sleeves thereof
Definitions
- the present invention relates to improvements in a glass plate manufacturing apparatus and a glass plate manufacturing method.
- the overflow down-draw method is known as a method capable of obtaining a glass sheet with very small surface waviness and roughness and excellent surface quality.
- a molded body having a wedge-shaped cross section installed in a molding furnace is used, and molten glass is continuously supplied to the groove provided at the top of this molded body.
- the supplied molten glass overflows from the groove, flows down along both side surfaces of the molded body, and fuses at the lower end of the molded body to form a plate-like glass ribbon.
- Both edges of the glass ribbon are nipped and pulled by a plurality of pulling rollers, so that the glass ribbon is transported on a transport path extending vertically in the annealing furnace.
- the ambient temperature in the slow cooling furnace is controlled, the glass ribbon is subjected to the slow cooling treatment, and unintended thermal strain is suppressed from occurring in the glass ribbon.
- the surface of the pulling roller is made from an inorganic material containing ceramic fibers and a binder.
- the glass ribbon is allowed to cool by being transported on a conveying path extending into a cooling chamber arranged at the bottom of the slow cooling furnace. After that, the glass ribbon is transported to a cutting chamber and cut in the width direction for each predetermined length to obtain a glass plate.
- Patent Document 1 discloses a method of nipping the glass ribbon by installing support rollers made of a material (for example, synthetic rubber) having a large coefficient of friction with the glass ribbon in the cooling chamber. ing.
- the temperature of the glass ribbon carried into the cooling chamber also increases, increasing the amount of heat conducted from the glass ribbon to the support rollers.
- the transfer speed of the glass ribbon is increased in order to improve the manufacturing efficiency, the amount of heat conducted from the glass ribbon to the support roller increases. Therefore, even if the surface of the support roller is made of highly heat-resistant rubber such as fluororubber or silicone rubber, the surface of the support roller deteriorates due to heat in a relatively short period of time, requiring frequent replacement. there were.
- An object of the present invention is to reduce the manufacturing cost by preventing the surface of the support roller from deteriorating due to the heat from the glass ribbon and extending the life of the roller.
- the present invention which has been devised to solve the above problems, comprises a forming furnace for forming molten glass into a glass ribbon, an annealing furnace for slowly cooling the glass ribbon, a cooling chamber for allowing the glass ribbon to cool, and a glass ribbon.
- a glass sheet manufacturing apparatus comprising: a cutting chamber for cutting into a predetermined length to obtain a glass sheet; A device is provided.
- the cooling device preferably cools the surface of the support roller from the outside. If the surface of the support roller is made of a material with low thermal conductivity (such as rubber), the surface cannot be efficiently cooled from inside the support roller. By cooling the surface of the support roller from the outside, the surface of the support roller can be efficiently cooled regardless of the material of the surface of the support roller.
- the support rollers constitute a support roller group by arranging a plurality of the support rollers side by side along the longitudinal direction of the glass ribbon, and the cooling device is the support roller group in the support roller group. It is preferably provided on the support roller that contacts the portion of the glass ribbon at 200° C. or higher. According to such a configuration, it is possible to selectively cool only the support roller having a high surface temperature and a high deterioration rate among the plurality of support rollers. As a result, the number of cooling devices installed can be reduced, and equipment costs can be reduced.
- the material of the surface of the support roller is preferably rubber. Since rubber has a large coefficient of friction against glass, a large frictional force can be obtained with a small contact pressure. Therefore, the contact pressure of the supporting rollers against the glass ribbon can be reduced, and breakage of the glass ribbon can be prevented. Furthermore, since the physical properties of rubber, such as hardness, flexibility, and surface smoothness, can be easily adjusted, a material capable of reliably supporting the glass ribbon can be easily obtained.
- the heat resistant temperature of the rubber is preferably 200°C or higher. According to such a configuration, it is possible to reduce the number of support rollers whose surfaces are heated to the heat-resistant temperature or more by coming into contact with the glass ribbon. As a result, the number of cooling devices installed can be reduced, and equipment costs can be reduced.
- the heat resistant temperature means the maximum temperature within the range where the physical properties at room temperature can be maintained as they are without deformation of the rubber due to heat and unnecessary stickiness due to heat.
- the cooling device is preferably a cooling roller that contacts the surface of the support roller.
- a cooling device for cooling the surface of the support roller there are a cooling roller, a cooling plate, and a cooling device that are brought into contact with the surface of the support roller.
- a cooling plate When a cooling plate is provided, friction between the surface of the supporting roller and the cooling plate causes wear of the surface of the supporting roller and an increase in the torque required to rotate the supporting roller.
- a coolant blowing device is provided, air currents are generated in the glass sheet manufacturing apparatus, which causes problems such as disturbance of the ambient temperature and scattering of glass powder.
- the surface of the support roller can be cooled without causing such a problem by using the configuration in which the cooling roller is brought into contact.
- the cooling roller has a channel for circulating a coolant inside. According to such a configuration, the heat conducted from the surface of the support roller to the cooling roller can be rapidly conducted to the coolant. Therefore, the surface of the support roller that contacts the cooling roller can be efficiently cooled.
- the coolant is preferably coolant.
- the surface of the support roller that contacts the cooling roller can be cooled more efficiently.
- the glass ribbon preferably has a width of 2000 mm or more.
- the weight of the glass ribbon increases, and slippage between the support roller and the support roller is likely to occur. Therefore, the effect that the support roller prevents the glass ribbon from slipping becomes remarkable.
- the method for manufacturing a glass plate according to the present invention includes a forming step of forming molten glass into a glass ribbon, a slow cooling step of slowly cooling the glass ribbon, and allowing the glass ribbon to cool while being in contact with a support roller.
- a glass plate manufacturing method comprising a cooling step and a cutting step of cutting the glass ribbon into a predetermined length to obtain a glass plate, wherein the cooling step includes cooling the surface of the support roller using a cooling device. Characterized by cooling. Since the surface of the support roller comes into contact with the hot glass ribbon, it heats up and deteriorates in a relatively short period of time.
- manufacturing costs can be reduced by efficiently cooling the surface of the support roller and extending the life of the support roller.
- FIG. 1 is a front view showing a glass plate manufacturing apparatus according to one embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line AA of FIG.
- FIG. 3 is a perspective view showing a main part of a support roller according to one embodiment of the invention.
- FIG. 4 is a cross-sectional view showing a cooling roller according to one embodiment of the invention.
- 5 is a cross-sectional view taken along the line BB of FIG. 4.
- FIG. FIG. 6 is a cross-sectional view showing a cooling roller according to another embodiment of the invention.
- FIG. 7 is a side view showing essential parts of a support roller and a cooling device according to another embodiment of the invention.
- a glass plate manufacturing apparatus 1 includes a forming furnace 2 for forming molten glass Gm into a glass ribbon Gr, an annealing furnace 3 for slowly cooling the glass ribbon Gr, a glass A cooling chamber 4 for cooling the ribbon Gr and a cutting chamber 5 for cutting the glass ribbon Gr to a predetermined length to obtain a glass plate G are provided. Moreover, the manufacturing apparatus 1 of a glass plate is used for execution of the manufacturing method of the glass plate which concerns on this embodiment.
- the molding furnace 2 is a space surrounded by a furnace wall 11 and includes a molded body 21 having a wedge-shaped cross section and a set of edge rollers 22 provided below the molded body 21 .
- the molten glass Gm is continuously supplied to the groove provided on the top 211 of the molding 21 .
- This molten glass Gm is formed, for example, by heating and melting frit and cullet in a melting furnace, and is subjected to clarification and stirring as necessary.
- the supplied molten glass Gm overflows from the groove, flows down along both side surfaces 212 of the molded body 21 , and fuses at the lower end 213 of the molded body 21 . Thereby, a plate-like glass ribbon Gr is formed. Both edges of the glass ribbon Gr are cooled while being sandwiched from the front and back sides by a set of four edge rollers 22 . This minimizes shrinkage in the width direction of the glass ribbon Gr.
- the slow cooling furnace 3 is a space surrounded by the furnace wall 11 and has a plurality of pairs of tension rollers 31 .
- a plurality of pulling rollers 31 are arranged along the longitudinal direction of the glass ribbon Gr, and pull the glass ribbon Gr downward while pulling it in the width direction so that the glass ribbon Gr does not shrink in the width direction due to surface tension or the like.
- the interior of the slow cooling furnace 3 is set to have a predetermined temperature gradient by a heater (not shown).
- the temperature of the glass ribbon Gr gradually decreases as it is transferred through the slow cooling furnace 3, and is slowly cooled to a temperature below the strain point. Thereby, it is possible to suppress the occurrence of unintended thermal strain inside the glass ribbon Gr.
- the tension roller 31 is made of an inorganic material containing ceramic fibers and a binder.
- the roller shaft of the tension roller 31 is connected to a power source (for example, a motor) (not shown) and controlled to rotate at a constant speed (peripheral speed or number of revolutions).
- a power source for example, a motor
- three pairs of tension rollers 31 are arranged along the longitudinal direction of the glass ribbon Gr, but the present invention is not limited to this.
- the number of pairs of the pulling rollers 31 may be two or less or four or more.
- the roller shaft of the pulling roller 31 may be controlled to rotate with a constant torque.
- the cooling chamber 4 includes support rollers 41, and the support rollers 41 constitute a support roller group 41A by arranging a plurality of pairs of support rollers 41 side by side along the longitudinal direction of the glass ribbon Gr.
- a plurality of pairs of support rollers 41 transport the glass ribbon Gr downward while sandwiching both edges of the glass ribbon Gr from the front and back.
- the cooling chamber 4 cools the glass ribbon Gr without a heater.
- the width of the glass ribbon Gr is preferably 2000 mm or more, more preferably 2500 mm or more, and even more preferably 3000 mm or more. When the width of the glass ribbon Gr is large in this way, the self-weight of the glass ribbon Gr increases, and slippage between the support roller 41 and the support roller 41 is likely to occur. Therefore, the effect that the support roller 41 prevents the glass ribbon Gr from slipping becomes remarkable.
- the support roller 41 has a rubber surface layer 413 attached to a metal shaft 411 via a metal core 412 .
- the surface layer portion 413 contacts the glass ribbon Gr and corresponds to the surface of the support roller 41 of the present invention.
- Synthetic rubber such as silicone rubber or fluororubber can be used as the material of the surface layer portion 413 .
- the heat resistance temperature of the rubber of the surface layer portion 413 is preferably 200° C. or higher, more preferably 250° C. or higher, and even more preferably 300° C. or higher.
- the shaft portion 411 is connected to a power source (for example, a motor) (not shown) and controlled to rotate at a constant speed (peripheral speed or number of revolutions).
- the logarithm of the support rollers 41 may be 3 pairs or less or 5 pairs or more.
- the shaft portion 411 of the support roller 41 may be controlled to rotate with a constant torque.
- the cutting chamber 5 has a cutting mechanism (not shown) that cuts the cooled glass ribbon Gr in the width direction for each predetermined length to obtain the glass sheet G.
- the obtained glass sheet G is conveyed to subsequent processes such as a removing process for cutting and removing both ends of the glass sheet G in the width direction, various inspection processes, and a packing process by a conveying device (not shown).
- a conveying device not shown
- the cooling chamber 4 of this embodiment includes a cooling roller 42 as a cooling device that cools the surface of the support roller 41 .
- the cooling roller 42 includes a roller portion 421 that contacts the surface of the support roller 41, a shaft portion 425 that holds the roller portion 421, and a cooling liquid Lc (for example, water) circulating therein. and a channel 422 that allows
- the roller portion 421 is held by a shaft portion 425 via a bearing 426 and is rotatable as the support roller 41 rotates.
- the roller portion 421 is made of a metal material such as stainless steel, so that the heat conducted from the surface of the support roller 41 to the roller portion 421 can be quickly conducted to the cooling liquid Lc.
- the bearing 426 is provided with a sealing structure to prevent leakage of the coolant Lc.
- the channel 422 is connected to an inflow channel 423 and an outflow channel 424 provided inside the shaft portion 425 .
- an inflow passage 423 may be provided on one side of the shaft portion 425 in the longitudinal direction, and an outflow passage 424 may be provided on the opposite side of the shaft portion 425.
- a double pipe structure may be provided on one side, and the inflow path 423 and the outflow path 424 may be provided on one side.
- the cooling liquid Lc is supplied from a cooling liquid source (not shown) to the flow path 422 through the inflow path 423 . After cooling the roller portion 421 in the channel 422 , the coolant Lc is discharged through the outflow channel 424 .
- the surface of the support roller 41 can be efficiently cooled by the cooling device (cooling roller 42), so that the life of the support roller 41 can be extended. It can be extended, and by lowering the replacement frequency, the manufacturing cost can be reduced.
- the support roller 41 that contacts the portion of the glass ribbon Gr at 200° C. or higher has a support roller A cooling roller 42 is preferably provided in contact with the surface of 41 .
- the cooling rollers 42 are provided on the three pairs of support rollers 41 from above among the plurality of pairs of support rollers 41, but the present invention is not limited to this.
- the number of pairs of support rollers 41 with which the cooling rollers 42 are brought into contact may be two pairs or less or four pairs or more.
- the cooling roller 42 is brought into contact with the support roller 41 from above, but the cooling roller 42 may be brought into contact with the support roller 41 from below, from the side, or from an oblique direction. From the standpoint of protecting the support roller 41 from falling glass fragments when the glass ribbon Gr is broken, it is preferable to bring the cooling roller 42 into contact with the support roller 41 from above.
- the torque required to rotate the support roller 41 at a constant speed changes. Therefore, it is preferable to monitor the deterioration state of the surface of the support roller 41 by measuring the torque of the power source connected to the shaft portion 411 and detecting the temporal change of the torque.
- the torque of the motor can be measured by measuring the load current of the motor using a sensor.
- the present invention is not limited to this.
- the present invention can also be applied to other glass plate manufacturing methods such as a slot down-draw method, in which sheet drawing is performed while pulling the glass ribbon Gr using rollers.
- cooling liquid Lc is used as the coolant in the above embodiment, the present invention is not limited to this, and a cooling gas may be used. From the viewpoint of efficiently cooling the support roller 41, it is preferable to use the cooling liquid Lc.
- the surface of the support roller 41 is cooled by bringing the cooling roller 42 into contact with it, but the present invention is not limited to this.
- a cooling plate 43 may be brought into contact with the surface of the support roller 41 as a cooling device, or a duct 44 for blowing cooling gas Gc onto the surface of the support roller 41 may be used as a cooling device.
- the cooling plate 43 When the cooling plate 43 is brought into contact with the support rollers 41 from above, the support rollers 41 can be protected from falling objects when the glass ribbon Gr is damaged in the transport path.
- a flow path for circulating a coolant may be provided inside the cooling plate 43 .
- the cooling device may be configured by combining the cooling roller 42 , the cooling plate 43 and the duct 44 .
- the shaft portion 411 is shared by the two support rollers 41 that are in contact with both edges of the glass ribbon Gr, and both ends of the shaft portion 411 are supported.
- the two support rollers 41 may each be provided with a shaft portion 411, and the shaft portion 411 may be cantilevered.
- the two tension rollers 31 in contact with both edges of the glass ribbon Gr have a common roller shaft, and both ends of the roller shaft are supported.
- a roller shaft may be provided for each of the two tension rollers 31 described above, and the roller shaft may be supported by a cantilever.
- one shaft 411 is provided with two core portions 412 and surface layer portions 413 to support both edge portions of the glass ribbon Gr, but the present invention is not limited to this.
- Three or more core portions 412 and surface layer portions 413 may be provided on one shaft portion 411 to support both edge portions and an intermediate portion of the glass ribbon Gr.
- the present invention can be suitably used to reduce manufacturing costs by efficiently cooling the surface of the support roller and extending its life.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
2 成形炉
3 徐冷炉
4 冷却室
41 支持ローラ
41A 支持ローラ群
42 冷却ローラ
422 流路
5 切断室
Gr ガラスリボン
Gm 溶融ガラス
Lc 冷却液
Claims (10)
- 溶融ガラスをガラスリボンに成形する成形炉と、前記ガラスリボンを徐冷する徐冷炉と、前記ガラスリボンを放冷する冷却室と、前記ガラスリボンを所定長さに切断しガラス板を得る切断室と、を備えたガラス板の製造装置であって、
前記冷却室は、前記ガラスリボンと接触する支持ローラと、前記支持ローラの表面を冷却する冷却装置を備えることを特徴とするガラス板の製造装置。 - 前記冷却装置は、前記支持ローラの表面を外部から冷却することを特徴とする請求項1に記載のガラス板の製造装置。
- 前記支持ローラは、複数の前記支持ローラを前記ガラスリボンの長手方向に沿って並べて配置することで支持ローラ群を構成し、
前記冷却装置は、前記支持ローラ群のうちで前記ガラスリボンの200℃以上の部位と接触する前記支持ローラに設けられることを特徴とする請求項1又は2に記載のガラス板の製造装置。 - 前記支持ローラの表面の材料は、ゴムであることを特徴とする請求項1~3のいずれかに記載のガラス板の製造装置。
- 前記ゴムの耐熱温度は、200℃以上であることを特徴とする請求項4に記載のガラス板の製造装置。
- 前記冷却装置は、前記支持ローラの表面に当接する冷却ローラであることを特徴とする請求項1~5のいずれかに記載のガラス板の製造装置。
- 前記冷却ローラは、内部に冷媒を流通させる流路を有することを特徴とする請求項6に記載のガラス板の製造装置。
- 前記冷媒は、冷却液であることを特徴とする請求項7に記載のガラス板の製造装置。
- 前記ガラスリボンは、幅2000mm以上であることを特徴とする請求項1~8のいずれかに記載のガラス板の製造装置。
- 溶融ガラスをガラスリボンに成形する成形工程と、前記ガラスリボンを徐冷する徐冷工程と、前記ガラスリボンを支持ローラと接触させながら放冷する冷却工程と、前記ガラスリボンを所定長さに切断しガラス板を得る切断工程と、を備えたガラス板の製造方法であって、
前記冷却工程では、冷却装置を用いて前記支持ローラの表面を冷却することを特徴とするガラス板の製造方法。
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CN202280024619.9A CN117062786A (zh) | 2021-04-09 | 2022-03-10 | 玻璃板的制造装置以及玻璃板的制造方法 |
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JP2021066680A JP2022161680A (ja) | 2021-04-09 | 2021-04-09 | ガラス板の製造装置、及びガラス板の製造方法 |
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Citations (8)
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JP2009149463A (ja) * | 2007-12-20 | 2009-07-09 | Nippon Electric Glass Co Ltd | ガラス板の製造方法及び製造設備 |
JP2012087004A (ja) * | 2010-10-19 | 2012-05-10 | Nippon Electric Glass Co Ltd | 帯状ガラスフィルム製造方法及び帯状ガラスフィルム製造装置 |
JP2013216526A (ja) * | 2012-04-06 | 2013-10-24 | Avanstrate Inc | ガラス基板の製造方法 |
JP2013220950A (ja) * | 2012-04-12 | 2013-10-28 | Avanstrate Inc | ガラス基板の製造方法 |
JP2014169198A (ja) * | 2013-03-01 | 2014-09-18 | Nippon Electric Glass Co Ltd | ガラス物品搬送装置 |
JP2017154911A (ja) * | 2016-02-29 | 2017-09-07 | 日本電気硝子株式会社 | ガラス板製造設備およびガラス板の製造方法 |
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JP2012167014A (ja) | 2012-05-11 | 2012-09-06 | Nippon Electric Glass Co Ltd | ガラス板の製造方法及び製造設備 |
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2021
- 2021-04-09 JP JP2021066680A patent/JP2022161680A/ja active Pending
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- 2022-03-10 CN CN202280024619.9A patent/CN117062786A/zh active Pending
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JP2000302468A (ja) * | 1999-04-19 | 2000-10-31 | Asahi Glass Co Ltd | ガラス板加熱炉のガラス板搬送ローラ構造 |
JP2009107912A (ja) * | 2007-11-01 | 2009-05-21 | Central Glass Co Ltd | ガラスリボンの搬送方法 |
JP2009149463A (ja) * | 2007-12-20 | 2009-07-09 | Nippon Electric Glass Co Ltd | ガラス板の製造方法及び製造設備 |
JP2012087004A (ja) * | 2010-10-19 | 2012-05-10 | Nippon Electric Glass Co Ltd | 帯状ガラスフィルム製造方法及び帯状ガラスフィルム製造装置 |
JP2013216526A (ja) * | 2012-04-06 | 2013-10-24 | Avanstrate Inc | ガラス基板の製造方法 |
JP2013220950A (ja) * | 2012-04-12 | 2013-10-28 | Avanstrate Inc | ガラス基板の製造方法 |
JP2014169198A (ja) * | 2013-03-01 | 2014-09-18 | Nippon Electric Glass Co Ltd | ガラス物品搬送装置 |
JP2017154911A (ja) * | 2016-02-29 | 2017-09-07 | 日本電気硝子株式会社 | ガラス板製造設備およびガラス板の製造方法 |
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CN117062786A (zh) | 2023-11-14 |
KR20230167412A (ko) | 2023-12-08 |
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