WO2009148141A1 - Appareil et procédé de fabrication de glace - Google Patents

Appareil et procédé de fabrication de glace Download PDF

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Publication number
WO2009148141A1
WO2009148141A1 PCT/JP2009/060292 JP2009060292W WO2009148141A1 WO 2009148141 A1 WO2009148141 A1 WO 2009148141A1 JP 2009060292 W JP2009060292 W JP 2009060292W WO 2009148141 A1 WO2009148141 A1 WO 2009148141A1
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WO
WIPO (PCT)
Prior art keywords
glass ribbon
protective layer
glass
layer forming
sulfurous acid
Prior art date
Application number
PCT/JP2009/060292
Other languages
English (en)
Japanese (ja)
Inventor
元一 伊賀
康一 花井
哲史 瀧口
信之 伴
Original Assignee
旭硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to KR1020107021743A priority Critical patent/KR101503964B1/ko
Priority to JP2010515928A priority patent/JP5387920B2/ja
Priority to CN200980121196.7A priority patent/CN102046542B/zh
Publication of WO2009148141A1 publication Critical patent/WO2009148141A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B25/00—Annealing glass products
    • C03B25/04—Annealing glass products in a continuous way
    • C03B25/06—Annealing glass products in a continuous way with horizontal displacement of the glass products
    • C03B25/08—Annealing glass products in a continuous way with horizontal displacement of the glass products of glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/28—Other inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/10—Deposition methods
    • C03C2218/15—Deposition methods from the vapour phase
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/36—Underside coating of a glass sheet

Definitions

  • the present invention relates to a sheet glass manufacturing apparatus by a float method and a manufacturing method thereof, and in particular, a protective layer forming portion for forming a protective layer for preventing wrinkles made of sulfate on the lower surface of a high-temperature glass ribbon drawn from a float bath.
  • the present invention relates to a plate glass manufacturing apparatus and a plate glass manufacturing method.
  • the method for producing plate glass by the float process is to supply molten glass onto the molten tin surface of the float bath, and form the molten glass into a continuous sheet shape on the molten tin.
  • This is a manufacturing method in which a high-temperature glass ribbon formed into a glass plate is drawn out from the surface of the molten tin, and this is slowly cooled and cut into a glass plate of a predetermined size.
  • the glass ribbon is pulled out from the surface of the molten tin by lifting and conveying the glass ribbon at the exit of the float bath with a roll called “lift-out roll”.
  • the place where the lift-out roll exists is hereinafter referred to as a “dross box”.
  • the drawn glass ribbon is gradually cooled in a slow cooling furnace on the downstream side of the dross box.
  • the zone where the cooling is performed is hereinafter referred to as “slow cooling part”, and the roll that supports and conveys the glass ribbon in the slow cooling part is hereinafter referred to as “slow cooling roll”.
  • the atmosphere of the float bath is maintained at a positive pressure in a reducing atmosphere by a mixed gas of nitrogen gas and hydrogen gas.
  • the dross box communicating with the float bath is also maintained in a reducing atmosphere of positive pressure.
  • the area where these float baths and dross boxes are present is hereinafter referred to as “molded part”.
  • Patent Document 1 sulfurous acid gas (SO 2 ) is introduced into the slow cooling furnace, and this is reacted with alkali metal sodium, which is a constituent component of the glass ribbon, to prevent wrinkles such as sodium sulfate on the surface of the glass ribbon.
  • SO 2 sulfurous acid gas
  • alkali metal sodium which is a constituent component of the glass ribbon
  • the plate glass manufacturing apparatus of Patent Document 1 is an apparatus that partitions a predetermined section of a slow cooling section with a partition wall, and blows sulfurous acid gas onto a glass ribbon flowing through the section to form the protective layer for preventing wrinkles on the surface of the glass ribbon. It is.
  • the plate glass manufacturing apparatus of Patent Document 1 is provided with a partition wall in a section into which sulfurous acid gas is introduced, but the partition wall is provided apart from the glass ribbon. Therefore, in the technique of Patent Document 1, when the section is positioned on the uppermost stream side of the slow cooling furnace, the airflow in the section is disturbed by the intrusion of the airflow in the dross box adjacent to the upstream side, and sulfurous acid gas is removed from the glass ribbon. There is a drawback that it is difficult to stay on the surface and the protective layer for preventing wrinkles cannot be efficiently and uniformly formed on the glass ribbon. In addition, there is a problem that oxygen in the compartment enters a non-oxidizing atmosphere in the dross box or float bath.
  • the present invention has been made in view of such circumstances, and provides a plate glass manufacturing apparatus and a plate glass manufacturing method capable of efficiently and uniformly forming a sulfate-preventing protective layer on a glass ribbon. With the goal.
  • the invention of the sheet glass manufacturing apparatus of the present invention comprises a molding section for continuously supplying molten glass to a horizontal bath surface of a float bath containing molten metal to form a glass ribbon,
  • a plate glass manufacturing apparatus comprising a slow cooling part that transports the glass ribbon formed in the forming part to a slow cooling furnace and slowly cools the glass ribbon, the glass ribbon is located upstream of the slow cooling part in the glass ribbon transport direction. In a zone having a temperature of 500 ° C.
  • a protective layer forming part for forming a protective layer for preventing wrinkles made of sulfate is provided on the lower surface of the glass ribbon, and the protective layer forming part is provided in the direction of conveying the glass ribbon.
  • a nozzle that supplies a sulfurous acid gas to the protective layer forming portion is partitioned by a downstream shielding member that is spaced within m and is held in a substantially hermetically sealed state.
  • the wrinkle-preventing protective layer is formed on the lower surface, and there is no roll in contact with the glass ribbon in the protective layer forming portion, and the portion in contact with the glass ribbon of the upstream shielding member is a heat resistant fiber sheet.
  • the non-oxidizing gas is supplied to the heat-resistant fiber sheet from the non-oxidizing gas supply unit.
  • the glass ribbon reacts with sulfurous acid gas at a temperature of 500 ° C. or more to form a protective layer for preventing wrinkles.
  • the temperature of the glass ribbon drawn out from the forming portion is 750 ° C. or lower. Since the reaction rate between the sulfurous acid gas and the alkaline earth metal in the glass is higher as the temperature of the glass ribbon is higher, the preferable temperature of the glass ribbon is 650 ° C. or higher.
  • the roll present in the protective layer forming portion is retracted from the glass ribbon and does not come into contact with the glass ribbon when a normal glass ribbon is formed. This roll abuts against the glass ribbon that flows discontinuously at the start of glass ribbon molding or when trouble occurs, and efficiently carries out the glass ribbon. Therefore, when forming the protective layer for preventing wrinkles through which the glass ribbon is continuously flowing, there is no roll in contact with the glass ribbon, so the entire lower surface of the glass ribbon is exposed to sulfurous acid gas in the protective layer forming portion. A protective layer for preventing wrinkles is formed uniformly.
  • the protective layer forming part is in contact with the lower surface of the glass ribbon on the upstream side in the glass ribbon transport direction and in contact with the lower surface of the glass ribbon on the downstream side in the glass ribbon transport direction. And is held in a substantially sealed state by being separated by a downstream side shielding member separated within 50 mm from the center.
  • a protective layer formation part becomes the atmosphere filled with sulfurous acid gas, and can form the protective layer for wrinkle prevention uniformly.
  • the internal disturbance of the protective layer formation part by the non-oxidizing atmosphere upstream of the protective layer formation part permeating into the protective layer formation part can be prevented.
  • the protective layer for wrinkle prevention can be efficiently formed on the glass ribbon.
  • the downstream shielding member even if the oxidizing atmosphere of the protective layer forming portion leaks into the slow cooling furnace, there is no problem because the slow cooling furnace is an oxidizing atmosphere.
  • a nozzle for supplying sulfurous acid gas is disposed in the protective layer forming portion, and the protective layer for preventing wrinkles is formed on the lower surface of the glass ribbon by the sulfurous acid gas supplied from this nozzle.
  • an upstream shielding member is comprised from a heat resistant fiber sheet, can seal a protective layer formation part, and can remove the molten metal adhering to the lower surface of a glass ribbon. This prevents uneven formation of the protective layer due to adhesion of molten metal, and the protective layer is formed more uniformly.
  • the non-oxidizing gas is supplied to the upstream shielding member from the non-oxidizing gas supply unit, and the oxidation loss of the heat-resistant fiber sheet is prevented by the non-oxidizing gas.
  • the non-oxidizing gas is injected from the upstream side shielding member, the molded part and the protective layer forming part are shielded by the non-oxidizing gas, so that the non-oxidizing of the float bath and the dross box from the protective layer forming part. It is possible to completely block the oxidizing atmosphere that tries to enter the atmosphere.
  • the portion of the downstream shielding member that is in contact with the glass ribbon is composed of a heat resistant fiber sheet
  • the non-oxidizing gas is preferably supplied from the non-oxidizing gas supply unit.
  • the heat-resistant fiber sheet is preferably a felt-like fiber sheet made of carbon fiber.
  • a gas retaining member for retaining the sulfurous acid gas supplied from the nozzle at a position immediately below the glass ribbon is disposed in the protective layer forming portion. Since sulfurous acid gas is heavier than air, the sulfurous acid gas does not react well with the alkaline earth metal in the glass ribbon if it is simply blown from the nozzle to the glass ribbon. Therefore, the reaction between the sulfurous acid gas and the alkaline earth metal can be promoted by retaining the sulfurous acid gas at a position directly below the glass ribbon by the gas retaining member. Further, the supply amount of sulfurous acid gas can be saved.
  • a roll for conveying a glass ribbon is disposed in the protective layer forming section, and the roll is positioned at a position retracted relative to the glass ribbon when the protective layer for preventing wrinkles is formed, It is preferable that a roll is also used as the gas retention member. In addition, it is preferable that the upper surface of the roll is at the same level as or slightly below the sulfite gas injection position of the nozzle from the viewpoint of favorably retaining the sulfite gas on the roll.
  • the distance between the glass ribbon and the nozzle is preferably set to 10 mm to 150 mm. If the nozzle is too close to the glass ribbon, the sulfurous acid gas is sprayed on only a part of the glass ribbon, so that the protective layer for preventing wrinkles cannot be formed uniformly. If the nozzle is too far away from the glass ribbon, the sulfurous acid gas is heavier than air, so the sulfurous acid gas injected from the nozzle and the alkaline earth metal of the glass ribbon cannot react well.
  • the distance between the glass ribbon and the nozzle is more preferably 20 mm to 100 mm, still more preferably 40 to 75 mm.
  • the present invention is suitable for the production of alkali-free glass.
  • the temperature of the glass ribbon in the protective layer forming part is preferably 650 ° C. to 750 ° C.
  • the said glass ribbon is an alkali free glass which does not contain an alkali component.
  • the invention of the plate glass manufacturing method of the present invention is characterized in that plate glass is manufactured using the plate glass manufacturing apparatus of the present invention. Thereby, the protective layer for preventing wrinkles of sulfate can be efficiently formed on the glass ribbon.
  • the upstream side shielding member and the downstream side shielding member are supplied with the sulfurous acid gas to the protective layer forming portion held in a substantially sealed state, A protective layer for preventing wrinkles of sulfate can be formed efficiently and uniformly on the glass ribbon, and the supply amount of sulfurous acid gas can be saved. As a result, high-quality glass with less wrinkles can be obtained.
  • the present invention is effective for non-alkali glass for liquid crystal displays and the like that are difficult to form a protective layer for preventing wrinkles.
  • Sectional drawing which showed the structure of the glass plate manufacturing equipment of embodiment.
  • Explanatory drawing showing concentration distribution of sulfurous acid gas in a protective layer formation part when a saucer is installed.
  • FIG. 1 is a cross-sectional view of a glass plate manufacturing facility 10 by a float method to which a plate glass manufacturing apparatus according to the present invention is applied.
  • the downstream side refers to the same direction as the movement direction of the glass ribbon 12 in FIG. 1 (in the direction of arrow A in FIG. 1), and the opposite side is referred to as the upstream side.
  • a float bath 14 In the glass plate manufacturing facility 10 shown in FIG. 1, a float bath 14, a dross box 16, and a slow cooling furnace 18 are installed in this order from the upstream side to the downstream side, and the protective layer forming unit of the embodiment is located upstream of the slow cooling furnace 18. 20 is provided.
  • Hot float molten tin 22 is accommodated in the float bath 14, and glass ribbon 12 is formed toward the outlet 15 of the float bath 14 by continuously supplying molten glass to the horizontal bath surface of the molten tin 22.
  • the glass ribbon 12 is pulled up from the molten tin 22 by the lift-out roll 24 of the dross box 16 at the outlet 15 of the float bath 14 and conveyed in the dross box 16. Then, the glass ribbon 12, while passing through the protective layer forming unit 20 described below, sulfur dioxide (SO 2) scratch preventing protection layer made of sulfate on its lower surface by the like supplied is formed.
  • SO 2 sulfur dioxide
  • the glass ribbon 12 in which the wrinkle prevention protective layer was formed is conveyed in the slow cooling furnace 18, is gradually cooled during the conveyance by the slow cooling roll 30 of this slow cooling furnace 18, and is manufactured to plate glass.
  • the float bath 14 and the dross box 16 that are at or above the melting temperature of tin need to be maintained in a non-oxidizing atmosphere. Therefore, nitrogen (N 2 ) gas, or nitrogen (N 2 ) gas and hydrogen A mixed gas with the gas (H 2 ) is continuously supplied to prevent the molten tin 22 from being oxidized.
  • the protective layer forming part 20 is a zone upstream of the slow cooling furnace 18 and the temperature of the glass ribbon 12 is 500 ° C. to 750 ° C.
  • the glass ribbon 12 can react with sulfurous acid gas at a temperature of 500 ° C. or higher to form a protective layer for preventing sulfate wrinkles.
  • the temperature of the glass ribbon 12 drawn out from the float bath 14 is 750 ° C. or less.
  • the reaction rate between the sulfurous acid gas and the alkaline earth metal in the glass tends to increase as the temperature of the glass ribbon 12 increases, and the preferred temperature is 650 ° C. or higher.
  • the roll 32 installed in the protective layer forming unit 20 is a roll that is retracted from the glass ribbon 12 and does not come into contact with the glass ribbon 12 when the normal glass ribbon is formed, that is, when the glass ribbon 12 is continuously conveyed. is there.
  • the roll 32 abuts the glass ribbon 12 and efficiently carries the glass ribbon 12 to the slow cooling furnace 18 when the glass ribbon flows discontinuously at the start of glass ribbon molding or when trouble occurs. Therefore, since the roll 32 is not in contact with the glass ribbon 12 when the protective layer for preventing wrinkles is formed, the entire glass ribbon is exposed to the sulfurous acid gas in the protective layer forming portion 20, and the protective layer for preventing wrinkles is uniform. Will be formed.
  • the length of the protective layer forming portion 20 (the length in the transport direction of the glass ribbon 12) is a distance that does not hinder continuous transport of the glass ribbon 12, and is 300 to 600 mm, preferably 400 to 500 mm. .
  • the protective layer forming unit 20 contacts the lower surface of the glass ribbon 12 on the upstream side in the glass ribbon transport direction, and contacts the lower surface of the glass ribbon 12 on the downstream side in the glass ribbon transport direction. It is partitioned by a downstream shielding member 36 separated from the lower surface within 50 mm and held in a substantially sealed state.
  • the protective layer forming unit 20 becomes filled atmosphere of sulfurous acid gas (SO 2), can be uniformly and efficiently form a flaw preventing protection layer.
  • the side part of the protective layer formation part 20 may be shared by the side wall of a slow cooling furnace, and may provide a shielding wall.
  • the oxidizing atmosphere of the protective layer forming unit 20 is formed in the non-oxidizing atmosphere of the float bath 14 and the dross box 16 positioned on the upstream side of the protective layer forming unit 20. Does not leak. Further, since the atmosphere of the protective layer forming unit 20 can be prevented from being disturbed by the atmosphere of the dross box 16 entering the protective layer forming unit 20, the sulfurous acid gas and the alkaline earth metal in the glass react well. Therefore, the protective layer for preventing wrinkles can be efficiently formed on the glass ribbon 12.
  • the downstream shielding member 36 when a predetermined gap (within 50 mm) is provided between the glass ribbon 12 and the lower shielding member 36, the oxidizing atmosphere in the protective layer forming portion leaks into the slow cooling furnace 18. Even so, there is no problem because the slow cooling furnace 18 is in an oxidizing atmosphere.
  • the protective layer forming unit 20 is provided with a nozzle 38 for supplying sulfurous acid gas, and the protective layer for preventing wrinkles is uniformly formed on the lower surface of the glass ribbon 12 by the sulfurous acid gas supplied from the nozzle 38.
  • the upstream shielding member 34 consists of a heat-resistant fiber sheet, can endure the temperature of 750 degreeC, and can wipe off the foreign material adhering to the lower surface of the glass ribbon 12.
  • a non-oxidizing gas for example, nitrogen
  • a non-oxidizing gas supply unit not shown
  • the non-oxidizing gas is injected from the upstream shielding member 34, the dross box 16 and the protective layer forming unit 20 are shielded by the non-oxidizing gas. It is possible to completely block the oxidizing atmosphere that is going to enter the non-oxidizing atmosphere of the dross box 16.
  • downstream side shielding member 36 is in contact with the lower surface of the glass ribbon 12
  • the downstream side shielding member 36 is preferably made of a heat resistant fiber sheet in the same manner as the upstream side shielding member 34. In this case, even if foreign matter remains on the lower surface of the glass ribbon 12, it can be further wiped off. Further, a non-oxidizing gas (for example, nitrogen) is also supplied to the downstream shielding member 36 from a non-oxidizing gas supply unit (not shown), and the oxidation loss of the heat-resistant fiber sheet is prevented by this non-oxidizing gas.
  • a non-oxidizing gas for example, nitrogen
  • the heat-resistant fiber sheet fibers made of a material that can withstand a temperature of 750 ° C. or higher, particularly 1000 ° C. or higher are preferable.
  • inorganic fibers such as carbon fibers, silica fibers, alumina fibers, silicon carbide fibers, metal fibers, and the like, and carbon fibers that are particularly low in hardness and difficult to bend glass ribbons and that repel molten tin are preferable.
  • a felt-like sheet, a woven fabric, or a non-fibrous sheet is preferable.
  • a carbon fiber felt sheet carbon felt
  • carbon fiber woven fabric carbon cloth
  • the heat-resistant fiber sheet may be a fiber sheet composed of two or more kinds of inorganic fibers of different materials. Even if the carbon fiber remains on the lower surface of the glass ribbon, the carbon fiber does not burn out in the oxidizing atmosphere at a relatively high temperature, for example, in the latter half of the slow cooling furnace 18 parts, so that it does not cause defects such as dirt.
  • the thickness of the heat resistant fiber sheet is not particularly limited, but is preferably 5 mm or more in order to have flexibility.
  • the upper limit of the thickness is not particularly limited, but when the non-oxidizing gas is supplied to the heat-resistant fiber sheet from the non-oxidizing gas supply unit, the thickness is 30 mm or less, that is, 10 to 10 from the viewpoint of pressure loss with respect to the non-oxidizing gas. 20 mm, especially 15 mm is preferred.
  • the felt-like sheet or a plurality of woven or non-woven fabrics may be stacked, and further, the felt-like sheet may be combined with the woven or non-woven fabric.
  • a glass ribbon 12 of a non-alkali glass for a liquid crystal display which does not substantially contain an alkali component such as sodium, calcium sulfate, strontium sulfate, not a protective layer for preventing sodium sulfate wrinkles
  • a protective layer for preventing wrinkles of sulfate such as magnesium sulfate is formed on the lower surface of the glass ribbon 12.
  • protective layers such as calcium sulfate, strontium sulfate, and magnesium sulfate cannot be formed as efficiently as protective layers of sodium sulfate.
  • the temperature of the glass ribbon 12 of the protective layer forming unit 20 is preferably 650 ° C. to 750 ° C.
  • the glass ribbon 12 made of alkali-free glass when the temperature of the glass ribbon 12 is 650 ° C. or higher, the alkaline earth metal component in the glass and the sulfurous acid gas easily react to form a protective layer for preventing sulfate wrinkles. Is done.
  • the distance between the glass ribbon 12 and the nozzle 38 is preferably set to 10 mm to 150 mm. If the nozzle 38 is too close to the glass ribbon 12, the sulfurous acid gas is sprayed on only a part of the glass ribbon 12, so that the protective layer for preventing wrinkles cannot be formed uniformly. On the other hand, if the nozzle 38 is too far away from the glass ribbon 12, the sulfurous acid gas is heavier than air, so the sulfurous acid gas injected from the nozzle 38 and the alkaline earth metal of the glass ribbon 12 cannot react well. Therefore, the distance between the glass ribbon 12 and the nozzle 38 is more preferably 20 mm to 150 mm, still more preferably 40 to 75 mm.
  • the protective layer forming unit 20 is provided with a tray (gas retaining member) 50 for retaining the sulfurous acid gas supplied from the nozzle 38 at a position directly below the glass ribbon 12. Since the sulfurous acid gas is heavier than air, the sulfurous acid gas does not react well with the alkaline earth metal if it is simply blown from the nozzle 38 to the glass ribbon 12. Thus, the reaction between the sulfurous acid gas and the alkaline earth metal can be promoted by retaining the sulfurous acid gas at a position directly below the glass ribbon 12 by the tray 50. Further, the supply amount of sulfurous acid gas can be further saved.
  • FIG. 2 is a diagram illustrating the concentration distribution of sulfurous acid gas in the protective layer forming unit 20 when the tray 50 is installed, expressed as a region (concentration: high), b region (concentration: medium), and c region (concentration: low).
  • FIG. As shown in the figure, the sulfurous acid gas stays around the roll 32 by the receiving tray 50, and the concentration of the sulfurous acid gas is maximized in the area between the roll 32 immediately below the glass ribbon 12 and the lower surface of the glass ribbon 12. Thereby, reaction with sulfurous acid gas and the alkaline-earth metal of the glass ribbon 12 is accelerated
  • FIG. 3 shows the concentration distribution of sulfurous acid gas in the protective layer forming unit 20 when the roll 32 is also used as a gas retention member, a region (concentration: high), b region (concentration: medium), c region (concentration: It is explanatory drawing represented by (low).
  • the sulfurous acid gas stays above the roll 32 by the roll 32, and the staying effect as much as the receiving tray 50 cannot be obtained, but the concentration thereof is between the roll 32 directly below the glass ribbon 12 and the lower surface of the glass ribbon 12. The area between is the maximum. Thereby, reaction with sulfurous acid gas and the alkaline-earth metal of the glass ribbon 12 is accelerated
  • the upper surface of the roll 32 is at the same level or lower than the sulfite gas injection position of the nozzle 38 in terms of favorably retaining the sulfite gas on the roll 32.
  • the sulfate anti-fogging protective layer can be efficiently and uniformly formed on the glass ribbon 12.
  • a protective layer made of sulfurous acid gas is continuously formed on the bottom surface of an alkali-free glass ribbon drawn continuously from a float bath in the protective layer forming portion for preventing wrinkles of the present invention.
  • a protective layer is uniformly formed on the lower surface of the glass ribbon, and the amount of sulfurous acid gas used is reduced as compared with the prior art.
  • This invention can be utilized for manufacture of the plate glass by the float method using a float bath, and is suitable for manufacturing glass plates, such as a plate glass for construction, a plate glass for motor vehicles, and a plate glass for displays, by a float method.
  • glass plates such as a plate glass for construction, a plate glass for motor vehicles, and a plate glass for displays, by a float method.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un appareil et un procédé de fabrication de glace, permettant de former efficacement sur le ruban de verre une couche protectrice de sulfate destinée à empêcher des défauts. La section de formation de la couche protectrice de l'appareil de fabrication de glace se trouve en amont du four à refroidissement lent, et la température du ruban de verre est fixée dans la zone de 500°C à 750°C, ce qui est favorable à la réaction entre l'acide sulfureux gazeux et les métaux alcalino-terreux. La section de formation de la couche protectrice est maintenue dans un état essentiellement fermé hermétiquement, étant séparée par un élément barrière en amont qui vient en contact avec la surface inférieure du ruban de verre sur le côté amont dans la direction de déplacement du ruban de verre, et par un élément barrière en aval qui peut ou ne peut pas être en contact avec la surface inférieure du ruban de verre sur le côté aval dans la direction de déplacement du ruban de verre. L'élément barrière en amont est en contact avec le ruban de verre, de sorte qu'il n'y a aucune fuite de l'atmosphère oxydante dans la section de formation de la couche protectrice, qui pourrait pénétrer dans l'atmosphère non oxydante se trouvant dans le bain de flottage et la boîte à crasse situés en amont de la section de formation de la couche protectrice. En outre, on peut éviter une perturbation de la section de formation de la couche protectrice en raison de l'intrusion de l'atmosphère se trouvant sur le côté amont dans la section  de formation de la couche protectrice (20), ce qui permet à l'acide sulfureux gazeux et aux métaux alcalino-terreux de réagir efficacement.
PCT/JP2009/060292 2008-06-06 2009-06-04 Appareil et procédé de fabrication de glace WO2009148141A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020107021743A KR101503964B1 (ko) 2008-06-06 2009-06-04 판유리의 제조 장치 및 판유리의 제조 방법
JP2010515928A JP5387920B2 (ja) 2008-06-06 2009-06-04 板ガラスの製造装置及び板ガラスの製造方法
CN200980121196.7A CN102046542B (zh) 2008-06-06 2009-06-04 平板玻璃的制造装置及平板玻璃的制造方法

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Application Number Priority Date Filing Date Title
JP2008149615 2008-06-06
JP2008-149615 2008-06-06

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WO2009148141A1 true WO2009148141A1 (fr) 2009-12-10

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JP (1) JP5387920B2 (fr)
KR (1) KR101503964B1 (fr)
CN (1) CN102046542B (fr)
TW (1) TWI391336B (fr)
WO (1) WO2009148141A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102092921A (zh) * 2009-12-14 2011-06-15 旭硝子株式会社 浮法玻璃的制造方法和制造装置
CN102190424A (zh) * 2010-03-05 2011-09-21 晶牛微晶集团股份有限公司 无机板材的制造方法、装置以及无机板材
CN102260038A (zh) * 2010-05-31 2011-11-30 株式会社Lg化学 用于浮法玻璃的退火设备和退火方法
KR101223395B1 (ko) 2010-11-18 2013-01-16 아사히 가라스 가부시키가이샤 유리판의 제조 장치 및 유리판의 제조 방법
JP2013063880A (ja) * 2011-09-20 2013-04-11 Nippon Electric Glass Co Ltd ガラス板
WO2013172307A1 (fr) * 2012-05-16 2013-11-21 旭硝子株式会社 Procédé de production de verre à glace
WO2014077371A1 (fr) 2012-11-16 2014-05-22 旭硝子株式会社 Procédé de production de verre et appareil de production de verre
JP2014097916A (ja) * 2012-11-16 2014-05-29 Nippon Electric Glass Co Ltd 薄膜太陽電池用ガラス板及びその製造方法
JP2015160790A (ja) * 2014-02-28 2015-09-07 日本電気硝子株式会社 ガラス板の製造方法及びガラス板の製造装置
JP2016050160A (ja) * 2014-09-01 2016-04-11 旭硝子株式会社 雰囲気仕切装置、およびフロートガラス製造装置
EP3159317A4 (fr) * 2014-06-20 2018-01-03 Asahi Glass Company, Limited Plaque de verre et procédé de fabrication correspondant
WO2019221084A1 (fr) * 2018-05-17 2019-11-21 Ａｇｃ株式会社 Dispositif de production de verre flotté et procédé de production de verre flotté

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104261655B (zh) * 2014-09-17 2016-08-17 中国南玻集团股份有限公司 浮法玻璃的制造装置
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JP6536427B2 (ja) * 2015-04-21 2019-07-03 Ａｇｃ株式会社 フロートガラスの製造装置、フロートガラスの製造方法
CN106746578B (zh) * 2016-12-21 2019-05-24 重庆重玻节能玻璃有限公司 浮法玻璃生产设备
CN106746577B (zh) * 2016-12-21 2019-02-15 重庆天和玻璃有限公司 可防划伤的浮法玻璃运输装置
JP2019137562A (ja) * 2018-02-06 2019-08-22 Ａｇｃ株式会社 フロートガラス製造方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4411795B1 (fr) * 1966-08-18 1969-05-29
JPS62129037U (fr) * 1986-02-07 1987-08-15
JPH0459578B2 (fr) 1985-07-24 1992-09-22 Hitachi Ltd
JPH05287496A (ja) 1992-04-13 1993-11-02 Hitachi Zosen Corp ステンレス鋼部材の表面処理方法
JPH10293129A (ja) 1997-04-18 1998-11-04 Nof Corp リン脂質中のエンドトキシン測定法
JP2001146433A (ja) * 1999-11-16 2001-05-29 Central Glass Co Ltd フロートガラス製造装置のシール構造
WO2002051767A1 (fr) * 2000-12-26 2002-07-04 Nippon Sheet Glass Co.,Ltd. Verre a glace avec film protecteur et son procede de fabrication
JP2004061314A (ja) 2002-07-29 2004-02-26 Dkk Toa Corp エンドトキシン測定方法及び装置、並びにエンドトキシン計測システム
WO2008004480A1 (fr) * 2006-07-07 2008-01-10 Asahi Glass Co., Ltd. Procédés destinés à produire un substrat de verre sans alcali

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4411795B2 (ja) * 2001-04-26 2010-02-10 トヨタ自動車株式会社 駆動装置およびその制御方法
JP2007308331A (ja) * 2006-05-18 2007-11-29 Nippon Sheet Glass Co Ltd フロートバス
CN102056851A (zh) * 2008-06-06 2011-05-11 旭硝子株式会社 平板玻璃的制造装置及平板玻璃的制造方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4411795B1 (fr) * 1966-08-18 1969-05-29
JPH0459578B2 (fr) 1985-07-24 1992-09-22 Hitachi Ltd
JPS62129037U (fr) * 1986-02-07 1987-08-15
JPH05287496A (ja) 1992-04-13 1993-11-02 Hitachi Zosen Corp ステンレス鋼部材の表面処理方法
JPH10293129A (ja) 1997-04-18 1998-11-04 Nof Corp リン脂質中のエンドトキシン測定法
JP2001146433A (ja) * 1999-11-16 2001-05-29 Central Glass Co Ltd フロートガラス製造装置のシール構造
WO2002051767A1 (fr) * 2000-12-26 2002-07-04 Nippon Sheet Glass Co.,Ltd. Verre a glace avec film protecteur et son procede de fabrication
JP2004061314A (ja) 2002-07-29 2004-02-26 Dkk Toa Corp エンドトキシン測定方法及び装置、並びにエンドトキシン計測システム
WO2008004480A1 (fr) * 2006-07-07 2008-01-10 Asahi Glass Co., Ltd. Procédés destinés à produire un substrat de verre sans alcali

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102092921A (zh) * 2009-12-14 2011-06-15 旭硝子株式会社 浮法玻璃的制造方法和制造装置
CN102092921B (zh) * 2009-12-14 2014-10-15 旭硝子株式会社 浮法玻璃的制造方法和制造装置
TWI480238B (zh) * 2009-12-14 2015-04-11 Asahi Glass Co Ltd Production method and manufacturing apparatus of floating glass
CN103482852A (zh) * 2009-12-14 2014-01-01 旭硝子株式会社 浮法玻璃的制造方法和制造装置
CN102190424B (zh) * 2010-03-05 2014-05-14 晶牛微晶集团股份有限公司 无机板材的制造方法、装置
CN102190424A (zh) * 2010-03-05 2011-09-21 晶牛微晶集团股份有限公司 无机板材的制造方法、装置以及无机板材
JP2011251893A (ja) * 2010-05-31 2011-12-15 Lg Chem Ltd フロートガラスのための徐冷装置及び方法
KR101377540B1 (ko) * 2010-05-31 2014-03-26 주식회사 엘지화학 플로트 유리 리본 서냉 장치 및 방법
US20140260429A1 (en) * 2010-05-31 2014-09-18 Lg Chem, Ltd. Annealing apparatus and method for float glass
CN102260038A (zh) * 2010-05-31 2011-11-30 株式会社Lg化学 用于浮法玻璃的退火设备和退火方法
US8769994B2 (en) 2010-05-31 2014-07-08 Lg Chem, Ltd. Annealing apparatus and method for float glass
KR101223395B1 (ko) 2010-11-18 2013-01-16 아사히 가라스 가부시키가이샤 유리판의 제조 장치 및 유리판의 제조 방법
JP2013063880A (ja) * 2011-09-20 2013-04-11 Nippon Electric Glass Co Ltd ガラス板
WO2013172307A1 (fr) * 2012-05-16 2013-11-21 旭硝子株式会社 Procédé de production de verre à glace
KR20150013116A (ko) * 2012-05-16 2015-02-04 아사히 가라스 가부시키가이샤 판 유리의 제조 방법
KR101974681B1 (ko) 2012-05-16 2019-05-02 에이지씨 가부시키가이샤 판 유리의 제조 방법
JP2014097916A (ja) * 2012-11-16 2014-05-29 Nippon Electric Glass Co Ltd 薄膜太陽電池用ガラス板及びその製造方法
WO2014077371A1 (fr) 2012-11-16 2014-05-22 旭硝子株式会社 Procédé de production de verre et appareil de production de verre
JP2015160790A (ja) * 2014-02-28 2015-09-07 日本電気硝子株式会社 ガラス板の製造方法及びガラス板の製造装置
EP3159317A4 (fr) * 2014-06-20 2018-01-03 Asahi Glass Company, Limited Plaque de verre et procédé de fabrication correspondant
JP2016050160A (ja) * 2014-09-01 2016-04-11 旭硝子株式会社 雰囲気仕切装置、およびフロートガラス製造装置
WO2019221084A1 (fr) * 2018-05-17 2019-11-21 Ａｇｃ株式会社 Dispositif de production de verre flotté et procédé de production de verre flotté
JPWO2019221084A1 (ja) * 2018-05-17 2021-07-08 Ａｇｃ株式会社 フロートガラス製造装置及びフロートガラス製造方法
JP7207407B2 (ja) 2018-05-17 2023-01-18 Ａｇｃ株式会社 フロートガラス製造装置及びフロートガラス製造方法

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TW201002632A (en) 2010-01-16
TWI391336B (zh) 2013-04-01
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