WO2014077108A1 - Rouleau pour transport de verre, et procédé ainsi que dispositif de fabrication de verre flotté en feuille - Google Patents

Rouleau pour transport de verre, et procédé ainsi que dispositif de fabrication de verre flotté en feuille Download PDF

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Publication number
WO2014077108A1
WO2014077108A1 PCT/JP2013/079026 JP2013079026W WO2014077108A1 WO 2014077108 A1 WO2014077108 A1 WO 2014077108A1 JP 2013079026 W JP2013079026 W JP 2013079026W WO 2014077108 A1 WO2014077108 A1 WO 2014077108A1
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WIPO (PCT)
Prior art keywords
glass
transport roller
roller
film
belt
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PCT/JP2013/079026
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English (en)
Japanese (ja)
Inventor
史朗 谷井
良人 森田
兼士 山田
俊太郎 兵頭
Original Assignee
旭硝子株式会社
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Priority to CN201380059864.4A priority Critical patent/CN104812715B/zh
Publication of WO2014077108A1 publication Critical patent/WO2014077108A1/fr

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    • 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
    • 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

Definitions

  • the present invention relates to a glass transport roller, a float plate glass manufacturing method, and a float plate glass manufacturing apparatus.
  • molten glass is continuously supplied to a horizontal bath surface of a bathtub containing molten metal to form a glass ribbon.
  • the glass ribbon is pulled up from the molten metal bath outlet and pulled out of the molten metal bath, and is molded to a target thickness.
  • Patent Document 1 discloses a method of forming a buffer layer made of a wrinkle generation preventive agent on the lower surface of a glass ribbon in contact with the transport roller by charging the wrinkle generation preventive agent.
  • the buffer layer is formed on the entire lower surface of the glass ribbon because the buffer layer is formed on the lower surface of the glass ribbon by charging the anti-wrinkle agent. Is done. Moreover, in this case, the thickness of the buffer layer becomes thicker than when the buffer layer is formed by contacting the glass ribbon with SO 2 gas.
  • the present invention suppresses the occurrence of wrinkles on the surface of the glass when used for glass transport, while the surface in contact with the glass transport roller is It aims at providing the glass conveyance roller which can perform the test
  • the present invention provides a glass transport roller in which a plurality of strip-shaped films are formed on the surface by supplying a solution containing an anti-wrinkle agent.
  • the glass transport roller of the present invention when used for transporting glass, it is possible to limit the contact portion between the glass and the glass transport roller while suppressing generation of wrinkles on the surface of the glass. Further, it becomes possible to inspect the surface of the glass on the side in contact with the glass transport roller.
  • the glass transport roller of the present embodiment is formed by forming a plurality of strip-shaped films on the surface by supplying a solution containing a wrinkle generation preventing agent.
  • FIG. 1 (A) schematically shows a perspective view of the glass transport roller of the present embodiment
  • FIG. 1 (B) shows the glass transport seen from the direction of the block arrow A in FIG. 1 (A).
  • a side view of the roller is shown.
  • the glass transport roller 10 of the present embodiment has a plurality of strip-shaped films 12 (12a to 12f) formed on the surface of the roller 11 at intervals.
  • 1A and 1B illustrate an example in which six strip-shaped films are provided, the number of strip-shaped films, the interval, and the like are not limited to such forms.
  • the roller 11 constituting the glass transport roller is not particularly limited, and for example, the same roller as that generally used when transporting a glass ribbon can be used.
  • the roller 11 has a substantially cylindrical shape and is not shown in FIG. 1A, but a member necessary for providing a rotation mechanism or the like is added, or a part of the shape is changed. Can do.
  • the material of the roller 11 is not particularly limited as long as it has sufficient heat resistance and Young's modulus for conveying glass (glass ribbon). For example, various metals, specifically stainless steel, for example. Steel or the like can be preferably used.
  • the belt-like film 12 is formed by supplying a solution containing a wrinkle-preventing agent to the roller 11.
  • the belt-like film 12 is a part that directly contacts glass (glass ribbon) when the glass is conveyed.
  • the roller 11 and glass (glass ribbon) are in direct contact. Can be prevented.
  • variety can be formed on the roller 11 by supplying a wrinkle generation prevention agent with respect to a roller in the state of the solution containing a wrinkle generation prevention agent.
  • the wrinkle generation preventing agent used when forming the band-shaped film a material that does not cause wrinkles on the glass ribbon when it becomes a band-shaped film on the surface of the roller 11, specifically, a material having a lower hardness than the glass to be conveyed.
  • the soot generation preventing agent include alkali metal, Mg or alkaline earth metal sulfate, alkali metal, Mg or alkaline earth metal chloride salt, alkali metal, Mg or alkaline earth metal carbonate It is preferably one or more powders selected from the group consisting of oxide ceramics, nitride ceramics, and metal sulfides.
  • magnesium sulfate (MgSO 4 ) is more preferable as the soot generation inhibitor. This is because when a solution containing a wrinkle-preventing agent is supplied to a roller, it is supplied as a solution containing a wrinkle-preventing agent as will be described later. It is because it can do. Moreover, water can be used as the solvent, and even if it is used in the glass production process, there is little risk of adverse effects on the surrounding processes, which is advantageous in terms of cost.
  • the solution containing the wrinkle generation preventing agent means a solution in which the wrinkle generation preventing agent is dissolved or a solution in which the wrinkle generation preventing agent is dispersed.
  • the solvent (dispersion) constituting the solution is not particularly limited as long as it can dissolve or disperse the wrinkle generation inhibitor. However, even when the solvent remains in the belt-like film, it is preferably a material that does not affect the glass being transported or the manufacturing process. Specifically, for example, water and alcohols such as ethanol and methanol can be preferably used.
  • the water here may be any of tap water, distilled water, ion exchange water, and ultrapure water.
  • the mixing ratio of the solvent to the solute (anti-fogging agent) when preparing the solution containing the anti-fogging agent is not particularly limited, and the viscosity and fluidity are such that the solution can be supplied to the roller by a nozzle. What is necessary is just to mix both in the ratio which has.
  • mixing is preferably performed so that the mass of the solvent is 1 or more and 40 or less, more preferably mixing is 3 or more and 20 or less, and 5 or more and 10 or less. It is particularly preferable to mix so that
  • the specific method at the time of supplying the solution containing an anti-wrinkle agent to the roller 11 is not limited, it is preferably formed by supplying it to a predetermined place with various nozzles.
  • the solution containing the wrinkle-preventing agent is either in the form of a continuous spray in a liquid state (squeezed by a nozzle to a predetermined width), or in the form of a droplet or mist spray.
  • the timing which supplies the solution containing a wrinkle generation prevention agent with respect to the roller 11 is not specifically limited, Before using for the conveyance of glass at least, the solution containing a wrinkle generation prevention agent is supplied with respect to the roller 11 beforehand. Thus, it is preferable to form a band-like film at a desired location. In addition, when the belt-shaped film is thinned by transporting the glass, the film is further laminated by supplying a solution containing an anti-wrinkle agent during and / or after transporting the glass. It can also be configured to adjust.
  • FIG. 2 shows a cross-sectional view in a plane perpendicular to the rotation axis of the glass transport roller.
  • the belt-like film 12 can be formed by supplying and laminating a solution containing an anti-wrinkle agent from a nozzle 22 to a desired position of the rotating glass transport roller 10.
  • the solvent (dispersion) of the solution containing the anti-wrinkle agent may be dried at the ambient temperature, and a heating mechanism for vaporizing the solvent may be provided as necessary.
  • the position of the nozzle is not limited to the form of FIG. 2, and can be installed at an arbitrary place.
  • the nozzle 22 which supplies the solution containing a wrinkle generation preventing agent may be configured separately from the glass transport roller of the present embodiment, or may be configured integrally as an incidental facility for the glass transport roller of the present embodiment.
  • the nozzle 22 is preferably configured so that its position can be displaced. Specifically, it is preferably configured so that it can be displaced in a direction parallel to the central axis of the glass transport roller.
  • a belt-like film is formed at a desired location according to the glass to be manufactured and transported before or during transport of the glass and after transport. This is to make it possible.
  • the nozzle is provided with one nozzle for each strip-like film.
  • the nozzle position may be configured to be displaceable so that the number of nozzles is smaller than the number of belt-shaped films to be formed (or one nozzle is provided for the glass transport roller).
  • the amount of the solution containing the anti-fog agent is about one strip-shaped film. It is preferable that it is 0.1 g / min or more and 20 g / min or less. This is because if it is less than 0.1 g / min, the rate of forming a belt-like film is slow, and if it is more than 20 g / min, the solvent contained in the solution volatilizes to produce an apparatus for producing glass. This is because there is a risk that the equipment will be corroded.
  • the supply amount of the solution containing the wrinkle-preventing agent is more preferably 0.1 g / min or more and 10 g / min or less per belt-like film, and 0.1 g / min or more and 5 g per belt-like film. / Min or less is particularly preferable.
  • the size of the band-shaped film is not particularly limited, but the width (W in FIG. 1B) is preferably 1 mm or more and 100 mm or less. If it is less than 1 mm, the glass that is supported and transported by the band-shaped film portion may not be sufficiently supported, and the glass and the transport roller may be in direct contact with each other to cause wrinkles on the glass surface. It is because there is sex. On the other hand, if it is larger than 100 mm, the area in contact with the glass becomes large, and if a part of the belt-like film adheres to the glass, the range that cannot be inspected may be widened. In particular, the width of the band-shaped film is more preferably 5 mm or more and 50 mm or less, and particularly preferably 5 mm or more and 10 mm or less.
  • FIG. 1B shows an example in which six belt-shaped films represented by 12a to 12f are formed.
  • the widths of the strip-like films of 12f may be the same or different.
  • the width of each band-like film is preferably in the above-described range.
  • the distance between the band-shaped films that is, the length represented by L in FIG. 1B is not particularly limited and can be arbitrarily selected.
  • the glass is not in direct contact with the roller due to deformation or the like. It is preferable to select the interval between the strip-like films.
  • the position of the strip-shaped film and the position of the cutting line coincide with each other or the vicinity thereof.
  • the interval between the strip-shaped films is preferably 20 mm or more and 700 mm or less. This is because if it is smaller than 20 mm, the portion where the glass and the belt-shaped film do not contact with each other decreases, so that the range in which the automatic inspection machine can inspect the wrinkles may be narrowed. Moreover, when larger than 700 mm, it deform
  • the interval between the strip-shaped films is more preferably 50 mm or more and 500 mm or less, and particularly preferably 100 mm or more and 300 mm or less.
  • these intervals may be the same or different. In any case, it is preferable that the distance between the respective band-like films is in the above range.
  • the film thickness of the band-shaped film represented by H in FIG. 1B is not particularly limited, but it is preferable to select the film thickness so that the glass to be conveyed and the roller are not in direct contact with each other. . Specifically, for example, it is preferably 0.1 mm or more and 30 mm or less. This is because when the film thickness of the belt-like film is less than 0.1 mm, there is a high possibility that the glass and the roller are in direct contact when the glass is conveyed. On the other hand, if it exceeds 30 mm, the distance between the roller surface and the surface of the belt-like film increases, and depending on the viscosity of the glass being conveyed, the glass may be deformed to an extent that it cannot be repaired.
  • the film thickness of the belt-like film is more preferably 1 mm or more and 20 mm or less, and particularly preferably 3 mm or more and 10 mm or less.
  • the band-shaped film different thicknesses may be included in the same glass transport roller. However, in order to maintain the flatness of the transported glass, the glass and each band-shaped film are in contact with each other.
  • the film thickness is preferably the same or substantially the same in the same glass transport roller.
  • the film thickness of the band-shaped film described here is preferably in the range of the film thickness at least before the start of transporting the glass, and may be in the above range even during and after the transport of the glass. More preferred.
  • this embodiment has demonstrated the glass conveyance roller, according to the glass conveyance roller of this embodiment, it supports and conveys glass with the strip
  • Float plate glass can be produced, for example, by a production method having the following steps.
  • a melting step of melting a glass raw material into a molten glass Supplying and molding molten glass onto the molten metal in the float bath, forming a glass ribbon,
  • a slow cooling step of transporting the glass ribbon by a transport roller In the slow cooling furnace, a slow cooling step of transporting the glass ribbon by a transport roller; After the slow cooling process, a transport process for transporting by a transport roller until a cutting process for cutting the glass ribbon, Cutting process to cut glass ribbon.
  • various steps such as a step of polishing the end face and the main plane after the defoaming step and the cutting step after the melting step can be added as necessary.
  • the glass conveyance roller demonstrated in 1st Embodiment can be used.
  • the glass conveying roller described in the first embodiment when conveying the glass ribbon.
  • the glass When the glass is transported, the glass can be supported and transported by a band-shaped film functioning as a buffer layer formed on the surface of the roller by using the glass transport roller described in the first embodiment. For this reason, it can prevent that the glass to convey and a roller contact directly, and can suppress generation
  • the contact portion between the glass surface and the wrinkle-preventing agent, and even if a part of the belt-like film adheres to the glass surface, the contact (adhesion) occurs.
  • the range can be minimal. For this reason, it becomes possible to inspect the wrinkles by the automatic inspection machine also on the glass surface on the side in contact with the glass transport roller, and the wrinkles can be found more accurately. Moreover, since a wrinkle can be discovered at an early stage, the yield can be improved.
  • the glass transport roller described in the first embodiment can be used when transporting glass (glass ribbon), and the installation range is not particularly limited.
  • the glass transport roller described in the first embodiment forms a band-like film on the roller as described above, the surface thereof is uneven. For this reason, depending on the viscosity (temperature) of the glass to be conveyed, the uneven shape on the surface of the glass conveying roller may be transferred and may not return to the original flat surface shape.
  • the glass transport roller described in the first embodiment is provided in a temperature range where the viscosity of the transported glass is in the range from the viscosity at the annealing point + 50 ° C. to the viscosity at the annealing point. Preferably it is.
  • the glass transport roller described in the first embodiment is used in the temperature range of the glass to be transported in the range of 700 ° C. or higher and 800 ° C. or lower. preferable.
  • the glass to convey is alkali glass, it is preferable to use the glass conveyance roller demonstrated in 1st Embodiment in the temperature range whose temperature of the glass to convey is 500 degreeC or more and 600 degrees C or less.
  • a normal roller having no band-like film can be used.
  • the wrinkle generation preventing agent is transferred in a band shape from the glass conveyance roller to the surface of the glass (on the surface in contact with the conveyance roller). For this reason, it is possible to suppress the generation of wrinkles even after contact with a normal roller.
  • FIG. 3 shows a view (top view) of the state in which the glass (glass ribbon) 21 is being conveyed by the plurality of glass conveying rollers 10 in the direction indicated by the block arrow in the drawing from the glass side.
  • each of the plurality of glass transport rollers 10 has the same configuration as that described in the first embodiment, and has a belt-like film 12 on the roller surface. In this case, as shown in FIG.
  • the installation position of the band-like film is on the same straight line along the glass conveyance direction indicated by the arrow in the drawing (for example, a region sandwiched between dotted lines 31 and 32 in the drawing) ) Is preferably arranged. That is, when conveying glass, it is preferable to comprise so that the strip
  • the position where the band-shaped film is formed is at or near the cutting position when glass (glass ribbon) is used as the final product.
  • the time required for the glass to pass through these glass transport rollers is preferably within 1 minute, and more preferably within 30 seconds.
  • the contact time is a time for continuous contact with the glass transport roller of the first embodiment, and after contacting with the time, transported by a roller having no concavo-convex shape, the glass of the first embodiment. It is good also as a structure conveyed with a conveyance roller. Further, even when the uneven shape is transferred to the glass surface, for example, a step of removing the strain (irregularities remaining on the surface) by heating the glass again above the strain point may be performed.
  • a buffer layer on the surface thereof may be formed a buffer layer on the surface thereof.
  • the buffer layer is formed by contacting the SO 2 gas in the glass is very thin, e.g., its thickness does not affect the flaw inspection of the glass surface by and automatic inspection machine about nanometer.
  • FIG. 4 shows a cross-sectional configuration diagram of a float bath and a device portion that draws and conveys (slowly cools) the glass ribbon from the float bath.
  • the manufacturing apparatus of float plate glass it is not limited only to the said part, Furthermore, the melting furnace which fuse
  • molten glass 41 is supplied from the left side, supplied onto molten metal 42, formed into a glass ribbon 43, and drawn out by a glass conveying roller 44 on the right side in the drawing to be conveyed in a slow cooling furnace.
  • the glass conveyance roller demonstrated in 1st Embodiment when conveying glass, the glass conveyance roller demonstrated in 1st Embodiment can be used.
  • the glass transport roller described in the first embodiment is preferably used as the glass transport roller when transporting the glass ribbon in the slow cooling furnace and / or when transporting the glass ribbon from the slow cooling furnace to the cutting device.
  • the glass can be supported and transported by the band-shaped film functioning as a buffer layer formed on the surface of the glass transport roller described in the first embodiment. Contact can be prevented and generation of wrinkles on the glass surface can be suppressed.
  • the range of contact (attachment) is It can be minimal. For this reason, it becomes possible to inspect the wrinkles by the automatic inspection machine also on the glass surface on the side in contact with the glass transport roller, and the wrinkles can be found more accurately. Moreover, since a wrinkle can be discovered at an early stage, the yield can be improved.
  • the glass transport roller described in the first embodiment can be used for transporting glass (glass ribbon), and the range in which the glass transport roller is installed is particularly limited. It is not a thing.
  • the glass transport roller described in the first embodiment forms a band-like film on the roller as described above, the surface thereof is uneven. For this reason, depending on the viscosity (temperature) of the glass to be conveyed, the uneven shape on the surface of the glass conveying roller may be transferred and may not return to the original flat surface shape.
  • the glass transport roller is preferably provided in a temperature range in which the viscosity of the transported glass is in the range from the viscosity at the annealing point + 50 ° C. to the viscosity at the annealing point.
  • the glass transport described in the first embodiment in the temperature range of the glass to be transported is 700 ° C. or higher and 800 ° C. or lower. It is preferable to install a roller.
  • the glass conveying roller demonstrated in 1st Embodiment should be installed in the temperature range whose temperature of the glass to convey is 500 degreeC or more and 600 degrees C or less. Is preferred.
  • a normal roller that does not form a belt-like film can be used.
  • the wrinkle generation preventing agent is transferred in a band shape from the glass conveyance roller to the surface of the glass (on the surface in contact with the conveyance roller). For this reason, it is possible to suppress the generation of wrinkles even after contact with a normal roller.
  • the solution containing a wrinkle generation prevention agent is supplied to the vicinity of a roller as shown in FIG. It is preferable to provide a nozzle 22 that can be used.
  • the strip-shaped film 12 may adhere to the transported glass and gradually become thin. Even in such a case, the strip-shaped film can maintain a desired thickness.
  • it is to be configured so that a solution containing the agent for preventing wrinkle generation can be supplied (to the belt-like film) in a timely manner.
  • a heating mechanism can be provided so that the solvent in the solution can be vaporized before the solution is brought into contact with the glass after the solution containing the anti-wrinkle agent is supplied.
  • the nozzle 22 is preferably configured so that its position can be displaced. Specifically, it is preferably configured to be able to be displaced in a direction perpendicular to the glass conveyance direction, that is, in a direction parallel to the central axis of the glass conveyance roller. This is because, for example, a belt-like film can be formed at a desired location in accordance with the glass to be manufactured and transported before, during or after the transport of the glass.
  • the nozzle is preferably provided with one nozzle for each strip-like film. That is, for example, when a plurality of strip-like films are formed on one glass transport roller, it is preferable to have a plurality of nozzles in accordance with the number of strip-like films. However, by configuring the position of the nozzle to be displaceable, the number of nozzles may be smaller than the number of strip-shaped films to be formed (or one nozzle for the glass transport roller). As described in Example 2, in the float sheet glass manufacturing apparatus of the present embodiment, when a plurality of the glass transport rollers described in the first embodiment are installed, as shown in FIG.
  • the installation positions are preferably arranged on the same straight line (for example, a region sandwiched between the dotted line 31 and the dotted line 32 in the figure) along the glass conveyance direction indicated by the arrow in the figure. That is, when conveying glass, it is preferable to comprise so that the strip
  • the time required for glass to pass through these glass conveyance rollers is preferably within 1 minute, and more preferably within 30 seconds.
  • the contact time is a time for continuous contact with the glass transport roller of the first embodiment, and after the contact for the time described above, after being transported by a roller having no uneven shape (not having a belt-like film), further It is good also as a structure conveyed with the glass conveyance roller of 1st Embodiment. Further, even when the uneven shape is transferred to the glass surface, for example, a step of removing the strain (irregularities remaining on the surface) by heating the glass again above the strain point may be performed.
  • a buffer layer on the surface thereof may be formed a buffer layer on the surface thereof.
  • the buffer layer is formed by contacting the SO 2 gas in the glass is very thin, e.g., its thickness does not affect the flaw inspection of the glass surface by and automatic inspection machine about nanometer.
  • the kind of glass manufactured in the float glass manufacturing apparatus in this embodiment is not specifically limited.
  • the glass to be produced is alkali-free glass, even if SO 2 gas is supplied to the glass, almost no sulfate is formed on the surface of the glass, so a buffer layer can hardly be formed, and generation of soot due to contact with the transport roller There was a problem that could not be prevented.
  • the glass manufactured in the float plate glass manufacturing apparatus of this embodiment is an alkali free glass.
  • the alkali-free glass produced in the present embodiment is preferably an alkali-free glass for a flat panel display substrate that requires high quality.
  • the following alkali-free glass is preferable.
  • SiO 2 50 to 73% Al 2 O 3 : 10.5-24%
  • B 2 O 3 0 to 12%
  • ZrO 2 0 to 5%
  • strain point is high and solubility is considered, more preferably, by mass percentage display based on oxide, SiO 2 : 58 to 66% Al 2 O 3 : 15-22% B 2 O 3 : 5-12% MgO: 0-8% CaO: 0-9% SrO: 3 to 12.5% BaO: 0-2% MgO + CaO + SrO + BaO: 9-18% Alkali-free glass containing
  • SiO 2 54 to 73% Al 2 O 3 : 10.5 to 22.5%
  • B 2 O 3 0 to 5.5%
  • CaO 0 to 16%
  • BaO 0 to 2.5%
  • MgO + CaO + SrO + BaO 8-26% Alkali-free glass containing
  • an alkali-free glass having the above-described composition is more preferable.
  • the float plate glass manufacturing apparatus using the glass conveyance roller demonstrated in 1st Embodiment was demonstrated, according to the float plate glass manufacturing apparatus of this embodiment, the float with few wrinkles on the surface of a glass plate A plate glass can be manufactured.
  • Example 1 After the float glass ribbon was formed in the forming process and the glass ribbon was pulled out from the float bath, the glass ribbon was transported by a transport roller in the slow cooling process.
  • the 10th roller from the first roller contacted with the glass ribbon drawn out from the float bath was a roller having the belt-like film of the present invention, and the remaining rollers were rollers having no belt-like film.
  • the belt-shaped film was formed by spraying an aqueous MgSO 4 solution (concentration 20 wt%) onto the transport roller at a rate of 0.2 g / min with respect to the transport roller by setting an injection nozzle at a predetermined position.
  • the band-shaped film had a band thickness of 5 mm, a band width of 10 mm, and a band interval of 300 mm.
  • the glass ribbon is 0.7 mm thick alkali-free glass (slow cooling point 717 ° C.), the conveyance speed is 300 m / h, the glass ribbon temperature when passing through the first roller is 750 ° C., and when passing through the 10th roller The glass ribbon temperature of was 720 ° C.
  • SO 2 gas spraying was simultaneously performed at the position of the 4th transport roller.
  • an optical wrinkle detection device was installed, wrinkles were detected for portions other than the portion corresponding to the ribbon film of the glass ribbon, and wrinkle occurrence frequency A (pieces / m 2 ) was measured. . Thereafter, the glass ribbon is pulled out, and the wrinkle occurrence frequency B (pieces / m 2 ) of the band-like film part is measured with respect to the part corresponding to the band-like film of the glass ribbon, and the band-like film part is measured.
  • Example 1 In Example 1, the experiment was performed under the same conditions except that the band-like film was changed to a band thickness of 0.5 mm, a band width of 10 mm, and a band interval of 300 mm. The results are shown in Table 1.
  • Example 3 In Example 1, the experiment was performed under the same conditions except that the band-like film was changed to a band thickness of 5 mm, a band width of 10 mm, and a band interval of 1000 mm. The results are shown in Table 1.
  • Example 4 In Example 1, an experiment was performed under the same conditions except that the band-shaped film was formed with a band thickness of 5 mm, a band width of 75 mm, and a band interval of 300 mm. The results are shown in Table 1.
  • Example 5 In Example 1, the experiment was performed under the same conditions except that the roller on which the belt-like film of Example 1 was formed was applied to the 30th glass transport roller from the roller that the glass ribbon was drawn out of the float bath and first contacted. Went. In addition, the temperature of the glass ribbon at the time of passing the 30th glass conveyance roller was 620 degreeC. The results are shown in Table 1.
  • Example 5 it was confirmed that some warping occurred, although it was not a problem as a product.

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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)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention fournit un rouleau pour transport de verre à la surface duquel une pluralité de films en forme de bande est formée par apport d'une solution contentant un inhibiteur de fissuration.
PCT/JP2013/079026 2012-11-16 2013-10-25 Rouleau pour transport de verre, et procédé ainsi que dispositif de fabrication de verre flotté en feuille WO2014077108A1 (fr)

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CN201380059864.4A CN104812715B (zh) 2012-11-16 2013-10-25 玻璃搬运辊、浮法板玻璃制造方法、浮法板玻璃制造装置

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JP2012252516 2012-11-16
JP2012-252516 2012-11-16

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WO2014077108A1 true WO2014077108A1 (fr) 2014-05-22

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CN (1) CN104812715B (fr)
TW (1) TW201422549A (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0545034U (ja) * 1991-11-13 1993-06-18 セントラル硝子株式会社 ガラス搬送ローラー
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