WO2014174986A1 - ガラス板製造装置、及びガラス板製造方法 - Google Patents
ガラス板製造装置、及びガラス板製造方法 Download PDFInfo
- Publication number
- WO2014174986A1 WO2014174986A1 PCT/JP2014/059043 JP2014059043W WO2014174986A1 WO 2014174986 A1 WO2014174986 A1 WO 2014174986A1 JP 2014059043 W JP2014059043 W JP 2014059043W WO 2014174986 A1 WO2014174986 A1 WO 2014174986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roll
- glass
- molten tin
- carbon film
- tin bath
- Prior art date
Links
- 239000011521 glass Substances 0.000 title claims abstract description 105
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 139
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 102
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 17
- 238000006124 Pilkington process Methods 0.000 claims abstract description 13
- 239000006060 molten glass Substances 0.000 claims abstract description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000010419 fine particle Substances 0.000 claims description 6
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 18
- 239000012298 atmosphere Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 4
- 238000010583 slow cooling Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000011195 cermet Substances 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 3
- 229910001887 tin oxide Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 0 *C*(CC1C*2)C3OC4C56C13C2(*)C5C(C1)C6C1*4 Chemical compound *C*(CC1C*2)C3OC4C56C13C2(*)C5C(C1)C6C1*4 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000005328 architectural glass Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
- C03B40/02—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it by lubrication; Use of materials as release or lubricating compositions
- C03B40/027—Apparatus for applying lubricants to glass shaping moulds or tools
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
-
- 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
- C03B35/167—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors specially adapted for removing defect sheets, ribbons or parts thereof
-
- 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 the production of a glass plate by a float process, and in particular, the glass ribbon caused by the foreign matter adhering to the lift-out roll by suppressing foreign matters such as molten tin brought in from the glass ribbon from adhering to the lift-out roll.
- the present invention relates to a glass plate manufacturing apparatus and a glass plate manufacturing method for suppressing generation of scratches.
- a method for producing a glass plate by a float process is to supply molten glass onto the molten tin surface of a molten tin bath and form the molten glass into a continuous sheet on the molten tin bath.
- This is a manufacturing method in which a glass ribbon formed into a continuous glass plate having a predetermined width is drawn out from the surface of the molten tin and cut into a glass plate having a predetermined size.
- the drawing of the glass ribbon from the surface of the molten tin bath is performed by lifting the glass ribbon on the downstream side of the molten tin bath by a roll usually called a lift-out roll.
- the area where the lift-out roll exists is hereinafter referred to as “lift-out area”.
- the drawn glass ribbon is gradually cooled in a slow cooling process called a layer on the downstream side of the lift-out region.
- the zone where the cooling is performed is hereinafter referred to as a “layer region”, and a roll that supports and conveys the glass ribbon in the layer region is hereinafter referred to as a “layer roll”. Since the molten tin in the float bath is easily oxidized, the atmosphere in the float bath is kept in a reducing atmosphere. Also, the lift-out area is usually maintained in a reducing atmosphere.
- Patent Document 1 discloses a removing member that removes foreign matters such as molten tin adhering to the surface of a lift-out roll.
- the removal member of Patent Document 1 is to remove a foreign substance such as molten tin adhering to the surface of the lift-out roll by pressing the removal member of the carbon plate-like material against the surface of the lift-out roll.
- Foreign matter such as molten tin adhering to the glass ribbon becomes a defect and causes deterioration in the quality and production yield of the glass plate.
- the foreign matter remaining on the roll scratches the glass ribbon, further causes slow cooling due to the scratch, and cracks occur in the subsequent processes, causing a decrease in production yield.
- the carbon plate-like material removal member disclosed in Patent Document 1 has a carbon coating on the surface of the lift-out roll as well as the function of removing the molten tin on the surface of the lift-out roll. It has been found that there is an insufficient function to prevent foreign matters such as molten tin brought in from the glass ribbon from adhering to the roll.
- the removal member is hereinafter referred to as a carbon film forming member.
- Patent Document 1 cannot solve the conventional problems because the carbon film is not sufficiently formed.
- the present invention has been made in view of such circumstances, and by suppressing the adhesion of foreign matter such as molten tin brought in from the glass ribbon to the roll, scratches on the glass ribbon caused by the foreign matter attached to the roll. It aims at providing the glass plate manufacturing apparatus and glass plate manufacturing method which suppress generation
- the present invention relates to a glass plate manufacturing apparatus by a float method manufactured by pouring molten glass onto a molten tin bath, and a glass ribbon drawn from the molten tin bath and in a melting temperature range of tin in the molten tin bath
- a carbon film forming member that elastically contacts the roll, and the carbon film forming member is a carbon powder having a particle diameter of 100 nm or less on the contact surface side with the roll It is characterized by including.
- the present invention relates to a glass plate manufacturing apparatus by a float method manufactured by pouring molten glass onto a molten tin bath, and a glass ribbon drawn from the molten tin bath and in a melting temperature range of tin in the molten tin bath
- a carbon film forming member that elastically contacts the roll, and the carbon film forming member is a molded product of carbon powder, and has a Shore hardness of 50 HS or less. Or scratch hardness based on ISO 15184 is 4B or less, or both are satisfied.
- the carbon film forming member of the present invention is preferably supported by a support member that supports the carbon film forming member and elastic support means that elastically supports the support member.
- the support member of the present invention is at least one molding selected from the group consisting of graphite, boron nitride, alkali sulfate, alkaline earth sulfate, alkali carbonate, alkaline earth carbonate, silica-based fine particles, and alumina fine particles. It is preferable that it is a body.
- the roll of the present invention preferably has a surface roughness (Ra) of 0.1 to 5.0 ⁇ m.
- the present invention relates to a method for producing a glass plate by a float process, which is produced by pouring molten glass onto a molten tin bath, and the glass is drawn from the molten tin bath and is in the melting temperature range of tin in the molten tin bath.
- a carbon film is formed on the roll surface by bringing a carbon powder having a particle diameter of 100 nm or less into contact with a roll that transports the ribbon.
- the present invention relates to a method for producing a glass plate by a float process, which is produced by pouring molten glass onto a molten tin bath, and the glass is drawn from the molten tin bath and is in the melting temperature range of tin in the molten tin bath.
- a carbon film is formed on the surface of the roll by bringing a formed body obtained by molding a carbon powder having a particle diameter of 100 nm or less into contact with a roll that transports a ribbon.
- the molded article of the present invention preferably has a Shore hardness of 50 HS or less, a scratch hardness based on ISO 15184 of 4 B or less, or both.
- the present invention by suppressing the adhesion of foreign matter such as molten tin brought in from the glass ribbon to the roll, a glass plate manufacturing apparatus that suppresses the generation of scratches on the glass ribbon caused by the foreign matter attached to the roll, And a method of manufacturing a glass plate.
- FIG. 1 is a cross-sectional view of a glass plate manufacturing apparatus to which the carbon film forming apparatus of the embodiment is applied.
- FIG. 2 is a side view of the carbon film forming apparatus of the embodiment shown in FIG.
- FIG. 3A is a perspective view showing the configuration of the first embodiment of the carbon film forming apparatus shown in FIG. 1.
- FIG. 3B is a perspective view showing the configuration of the second embodiment of the carbon film forming apparatus shown in FIG. 1.
- FIG. 4 is a cross-sectional view of an apparatus used for measurement preparation of carbon coating reflectance.
- FIG. 5 is a graph showing the carbon coating reflectance of conventionally used graphite and the carbon powder of the present invention.
- FIG. 1 is a cross-sectional view of a glass plate manufacturing apparatus 12 by a float method to which a carbon film forming apparatus 10 according to an embodiment is applied
- FIG. 2 is a side view of the carbon film forming apparatus 10.
- 3A and 3B are perspective views of the carbon film forming apparatus 10.
- “downstream” refers to the same direction as the moving direction of the glass ribbon 16 in FIG. 1 (in the direction of arrow A in FIG. 1), and the opposite direction is referred to as upstream.
- a carbon film forming apparatus 10 shown in FIG. 1 carries, for example, three liftouts, which are drawn out from the surface of molten tin 20 of a molten tin bath 18 of a float bath 17 and carry a glass ribbon 16 in the melting temperature range of tin.
- a carbon film is formed on the surfaces of the lift-out rolls 22, 22, 22 by elastically contacting the rolls 22, 22, 22 with a carbon film forming member 24 that is a carbon powder having a particle diameter of 100 nm or less. It is an apparatus to form.
- the lift-out roll 22 is attached with foreign substances such as molten tin brought in from the glass ribbon 16, exfoliated material exfoliated from the roll surface, and glass cullet.
- the carbon film forming apparatus 10 can prevent foreign matters such as molten tin from adhering to the lift-out roll 22.
- the glass ribbon 16 formed on the molten tin 20 is drawn from the molten tin bath 18 and moves in the downstream direction indicated by the arrow A.
- the carbon film forming apparatus 10 includes a carbon film forming member 24 that contacts the lower surface of the lift-out roll 22 and a rectangular parallelepiped support member 26 that supports the carbon film forming member 24.
- the member 26 is disposed along the width direction of the glass ribbon 16 (perpendicular to the paper surface).
- the carbon film forming apparatus 10 includes a carbon film forming module 14 and a leaf spring device 11 as elastic support means.
- the leaf spring device 11 according to the embodiment includes a lower frame 11A, a plurality of V-shaped plate spring bodies 11B provided adjacent thereto, and an upper frame 11C disposed on the plate spring bodies 11B. It consists of.
- the lower base 11 ⁇ / b> A and the upper base 11 ⁇ / b> C may be formed to have a length and width that can support a plurality of adjacent carbon film forming modules 14, and one leaf spring body 11 ⁇ / b> B may be provided below each carbon film forming module 14. A plurality of them may be provided.
- FIG. 1 In the example of FIG.
- three leaf spring bodies 11 ⁇ / b> B are arranged adjacent to each other in a state where the three carbon film forming modules 14 are arranged adjacent to each other.
- the bottom of the V-shaped leaf spring body 11B is attached to the lower frame 11A, and the upper frame 11C is elastically supported on the upper side.
- the carbon film forming member 24 constituting the carbon film forming module 14 is elastically brought into contact with the lift-out roll 22 by the elastic restoring force of the leaf spring device 11.
- the carbon film forming apparatus 10 may be composed of a carbon film forming member 24A obtained by molding carbon powder and a support member 26, or carbon using the carbon powder as it is in powder form.
- the film forming member 24 ⁇ / b> B and the support member 26 may be included.
- the carbon film forming member 24A can be obtained by pressurizing with a pressure exceeding 10 MPa after the mold is filled with carbon powder.
- the carbon film forming member 24A can also be obtained by filling a rubber mold with carbon powder, placing the rubber mold in a water tank, and pressurizing with a hydrostatic pressure. These molded bodies after molding are cut into a size that can be inserted into the groove of the support member 26.
- the carbon film forming member 24B Since the carbon film forming member 24B has a relatively strong adhesiveness to the carbon powder, the carbon film forming member 24B is supported by being inserted into the groove of the support member 26, and can be used without being scattered even if pressed lightly. Moreover, as shown to FIG. 3B, you may comprise only the carbon film formation member 24A which shape
- the support member 26 is lightweight and has heat resistance, a molded body of carbon (graphite) that has been conventionally used as a removal member is preferable.
- the support member 26 is preferably a molded body having a small difference in thermal expansion coefficient from the carbon film forming member 24. If the difference in coefficient of thermal expansion is large, the carbon film forming member 24 is constrained by the support member 26, and there is a fear that the function may not be performed due to cracking.
- the support member 26 may be a molded body of boron nitride, alkali sulfate, alkaline earth sulfate, alkali carbonate, alkaline earth carbonate, silica-based fine particles, and alumina fine particles. Further, the boron nitride molded body preferably has a purity of 30% or more.
- the carbon film forming apparatus 10 is divided into three in the longitudinal direction as shown in FIGS. 3A and 3B, for example, into three divided carbon film forming modules 14, 14, 14 Are arranged in a straight line.
- the carbon film forming apparatus 10 can also be provided at an arbitrary position of the lift-out area 21 in the above process or an upstream part in the layer area 28.
- the upstream portion in the layer region 28 refers to a region (tin melting temperature region) in which the glass temperature is higher than the melting point of tin in the layer region 28.
- the lift-out region 21 is usually in the melting temperature region of tin.
- the carbon film forming member 24 forms a carbon film on the surface of the lift-out roll 22 or the layer roll 30 and removes foreign matters including tin oxide attached to the surface of the glass ribbon 16 by the film.
- a carbon powder having a particle diameter of 100 nm or less, or a molded body is used as a substance suitable for the above and having a weak scratching force on glass.
- the particle diameter is 3 to 100 nm.
- a graphite molded body that has been used as a removing member has a particle diameter (D50) of 1 to 300 ⁇ m. Since the carbon particles are finer than before, the adhesion of the carbon particles to the roll is improved, and the formation of the carbon film is promoted.
- the carbon film forming member 24 is preferably softer than a conventional graphite molded body. Specifically, those having a Shore hardness of 50 HS or less are preferable. More preferably, the Shore hardness is about 20 to 50 HS.
- the pencil hardness is preferably 4B or less. More preferably, the pencil hardness is 4B to 8B. Here, the pencil hardness is a scratch hardness based on ISO 15184.
- Conventional graphite compacts have a Shore hardness of about 20-80 HS and a pencil hardness of HB-4B. Because it is softer than conventional graphite carbon moldings, it is less likely to cause a gap between the roll and the carbon film forming member by elastically contacting the roll, and the carbon film is uniformly applied to the entire roll surface. Is formed.
- each module 14 of the carbon film forming member 24 is 610 mm.
- the contact pressure of the carbon film forming member 24 when the carbon film forming member 24 contacts the lift-out roll 22 having a diameter of 300 mm is about 4 to 5 kg (32 to 40 g / cm 2 ).
- the carbon film forming member 24 is a region after being drawn out from the molten tin bath 18 and is brought into contact with the surface of the lift-out roll 22 whose glass temperature is in the melting temperature region of tin.
- the melting point of tin is about 230 ° C. Therefore, the region where the carbon film forming member 24 is disposed is a temperature region higher than the melting point of tin.
- the lift-out region 21 is usually in the glass temperature region above the melting point of tin, and the upstream region of the layer region 28 is also usually in the glass temperature region above the melting point of tin.
- the carbon film forming member 24 is preferably brought into contact with the surface of the roll in the upstream region of the lift-out region 21 or the layer region 28, and particularly in contact with the surface of the lift-out roll 22 in the lift-out region. It is more preferable.
- the atmosphere in the region including the carbon film forming member 24 is preferably a non-oxidizing atmosphere (that is, a reducing gas atmosphere or an inert gas atmosphere).
- a non-oxidizing atmosphere that is, a reducing gas atmosphere or an inert gas atmosphere.
- the lift-out area 21 is maintained in a reducing gas atmosphere similar to the normal float bath 17.
- the portion into which the gas in the lift-out region 21 upstream of the layer region 28 flows is usually in a reducing gas atmosphere or an inert gas atmosphere. Therefore, the arrangement
- the oxygen concentration in the non-oxidizing gas or non-oxidizing atmosphere is preferably 100 ppm or less, particularly preferably 20 ppm or less.
- the reducing gas hydrogen, acetylene, or an inert gas containing these is preferable.
- Nitrogen gas or argon gas is preferable as the inert gas.
- the reducing atmosphere is preferably a hydrogen-containing nitrogen gas atmosphere similar to the atmosphere of the float bath 17.
- various ceramics such as oxide, carbide, and nitride, or stainless steel is applied.
- various ceramics include zirconia ceramics mainly composed of zirconium oxide (ZrO 2 ), alumina ceramics mainly composed of aluminum oxide (Al 2 O 3 ), and silicon oxide (SiO 2 ) as a main component. Examples thereof include silica-based ceramics.
- various cermets such as an oxide dispersion cermet, a chromium carbide cermet, or a boride cermet may be used as an oxide dispersion cermet, a chromium carbide cermet, or a boride cermet may be used.
- the surface roughness (Ra) of the lift-out roll 22 and the layer roll 30 on which the carbon film is formed is preferably 0.1 to 5.0 ⁇ m. Since the carbon powder having a particle size of 100 nm or less has a diameter smaller than the surface roughness (Ra) of the roll, adhesion to a smooth surface is effective.
- the carbon powder having a particle diameter of 100 nm or less, or the carbon film forming member 24 that is a molded body thereof is elastically brought into contact with the lift-out roll 22.
- the method for producing a glass plate using the carbon film forming apparatus 10 it is possible to reduce defects of the glass plate due to foreign matters such as tin and tin oxide attached to the glass ribbon 16, and to cause foreign matters attached to the roll. Since the scratches on the glass ribbon 16 to be reduced are reduced, it is possible to improve the quality of the glass plate and reduce the manufacturing cost.
- the improvement in the adhesion of the carbon particles to the roll is confirmed by measuring the carbon coating reflectivity.
- the measurement preparation and measurement method will be described below.
- the zirconia (ZrO 2 -8 wt% Y 2 O 3 ) plate 41 was washed with ethanol and then with pure water.
- a carbon piece 42, a zirconia plate 41, a weight 43 and a carbon case 44 are set in the test apparatus 40 shown in FIG. 4 and held at 700 ° C. in a nitrogen atmosphere using an electric heater 45, and then the zirconia plate is attached to the carbon piece 42.
- 41 was reciprocated at a predetermined speed by a wire (not shown), and a carbon film was applied to the zirconia plate 41.
- the test apparatus 40 shown in FIG. 4 has a configuration in which a plurality of electric heaters 45 are provided inside a container 40A in which the internal atmosphere can be adjusted to a nitrogen atmosphere.
- a nitrogen gas supply source is connected to a part of the container 40A, and an opening / closing door is provided in a part of the container 40A so that the carbon piece 42 and the zirconia plate 41 can be taken in and out. Is provided so that the reciprocation test can be performed in the above heating state.
- the carbon piece 42 a graphite molded body conventionally used as a removing member and a molded body molded from the carbon powder of the present invention were used.
- the number of reciprocations (hereinafter referred to as the number of times of application) was determined to be comparatively evaluated as 1, 3, 5, and 10 times.
- FIG. 5 is a graph showing the carbon coating reflectivity of conventionally used graphite (comparative example) and carbon pieces using the carbon powder of the present invention (example).
- the vertical axis represents the reflectance R (%), and the higher the value, the lower the adhesion of the carbon powder to the glass.
- the horizontal axis represents the number of times of application N. From FIG.
- the molded body molded from the carbon powder of the present invention had a lower reflectance than the conventionally used graphite, and the same tendency was observed even when the number of coatings was increased. Since the reflectance is lower than that of conventionally used graphite, it can be seen that the carbon powder of the example has high adhesion of carbon particles to the zirconia plate 41.
- Carbon film forming device 11
- Leaf spring device (elastic support means) DESCRIPTION OF SYMBOLS 12
- Glass plate production apparatus 12
- Carbon film formation module 16
- Glass ribbon 17 Float bath
- Molten tin bath 20
- Molten tin 20
- Molten tin 21
- Liftout area 22
- Liftout roll 24, 24A, 24B
- Carbon film formation member 26
- Support member 28
- Layer area 30
- Weight 44 Carbon case 45 Electric heater
Landscapes
- 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)
Abstract
Description
以上の構成により、板ばね装置11の弾性復元力により、カーボン被膜形成モジュール14を構成するカーボン被膜形成部材24は、リフトアウトロール22に弾性的に当接される。
図4に示す試験装置40は、内部雰囲気を窒素雰囲気に調整可能な容器40Aの内部に、複数の電気ヒーター45を設けた構成であり、容器40Aの内部を窒素雰囲気に調整した状態で目的の温度に加熱できるように構成されている。即ち、容器40Aの一部に窒素ガス供給源が接続され、容器40Aの一部に上述のカーボン片42とジルコニアプレート41を出し入れ自在とする開閉扉が設けられ、上述のワイヤーを駆動する駆動装置が設けられていて、上述の加熱状態で往復移動試験ができるように構成されている。
カーボン片42として、従来から除去部材として用いられてきた黒鉛の成形体と本発明のカーボン粉体から成形した成形体を用いた。往復回数(以下、塗布回数と呼ぶ)は、1回、3回、5回、10回として比較評価を行うことにした。
図5は、従来から用いられる黒鉛(比較例)と本発明のカーボン粉体(実施例)を用いたカーボン片とのカーボン塗布反射率を示したグラフを示す。縦軸は、反射率R(%)を表し、値が高いほどカーボン粉体のガラスへの付着性が低いことを示す。また、横軸は、塗布回数Nを表す。
図5より、本発明のカーボン粉体から成形した成形体は、従来から用いられる黒鉛よりも反射率が低く、塗布回数を増やしても同様の傾向が見られた。従来から用いられている黒鉛よりも反射率が低いことから、実施例のカーボン粉体はジルコニアプレート41に対し、カーボン粒子の付着性が高いことがわかる。
11 板ばね装置(弾性支持手段)
12 ガラス板製造装置
14 カーボン被膜形成モジュール
16 ガラスリボン
17 フロートバス
18 溶融錫浴
20 溶融錫
21 リフトアウト域
22 リフトアウトロール
24、24A、24B カーボン被膜形成部材
26 支持部材
28 レヤー域
30 レヤーロール
40 試験装置
41 ジルコニアプレート
42 カーボン片
43 重り
44 カーボンケース
45 電気ヒーター
Claims (8)
- 溶融ガラスを溶融錫浴上に流し込むことにより製造されるフロート法によるガラス板製造装置において、
前記溶融錫浴から引き出されかつ前記溶融錫浴中の錫の溶融温度域にあるガラスリボンを搬送するロールと、前記ロールに弾性的に当接されるカーボン被膜形成部材と、を有し、
前記カーボン被膜形成部材は、前記ロールとの当接面側が100nm以下の粒子径のカーボン粉体を含む、ことを特徴とするガラス板製造装置。 - 溶融ガラスを溶融錫浴上に流し込むことにより製造されるフロート法によるガラス板製造装置において、
前記溶融錫浴から引き出されかつ前記溶融錫浴中の錫の溶融温度域にあるガラスリボンを搬送するロールと、前記ロールに弾性的に当接されるカーボン被膜形成部材と、を有し、
前記カーボン被膜形成部材は、カーボン粉体の成形品であり、ショア硬度が50HS以下であるか、もしくはISO 15184に基づく引っかき硬度が4B以下であるか、もしくはその両方を満足する、ことを特徴とするガラス板製造装置。 - 前記カーボン被膜形成部材は、該カーボン被膜形成部材を支持する支持部材と、該支持部材を弾性的に支持する弾性支持手段と、で支持される請求項1または2に記載のガラス板製造装置。
- 前記支持部材は、黒鉛、窒化ホウ素、アルカリ硫酸塩、アルカリ土類硫酸塩、アルカリ炭酸塩、アルカリ土類炭酸塩、シリカ系微粒子、およびアルミナ微粒子からなる群から選ばれる少なくとも1つの成形体である請求項3に記載のガラス板製造装置。
- 前記ロールは、表面粗さ(Ra)が0.1~5.0μmである請求項1乃至4のいずれか一項に記載のガラス板製造装置。
- 溶融ガラスを溶融錫浴上に流し込むことにより製造されるフロート法によるガラス板の製造方法において、
前記溶融錫浴から引き出されかつ前記溶融錫浴中の錫の溶融温度域にあるガラスリボンを搬送するロールに、粒子径が100nm以下のカーボン粉体を当接させることにより、前記ロール表面にカーボン被膜を形成することを特徴とするガラス板製造方法。 - 溶融ガラスを溶融錫浴上に流し込むことにより製造されるフロート法によるガラス板の製造方法において、
前記溶融錫浴から引き出されかつ前記溶融錫浴中の錫の溶融温度域にあるガラスリボンを搬送するロールに、粒子径が100nm以下のカーボン粉体を成形した成形体を当接させることにより、前記ロール表面にカーボン被膜を形成することを特徴とするガラス板製造方法。 - 前記成形体は、ショア硬度が50HS以下であるか、もしくはISO 15184に基づく引っかき硬度が4B以下であるか、もしくはその両方を満足する請求項7に記載のガラス板製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480023415.9A CN105143124B (zh) | 2013-04-26 | 2014-03-27 | 玻璃板制造装置及玻璃板制造方法 |
KR1020157030639A KR20160002827A (ko) | 2013-04-26 | 2014-03-27 | 유리판 제조 장치, 및 유리판 제조 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-093956 | 2013-04-26 | ||
JP2013093956A JP2016128363A (ja) | 2013-04-26 | 2013-04-26 | ガラス板製造装置、及びガラス板製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014174986A1 true WO2014174986A1 (ja) | 2014-10-30 |
Family
ID=51791568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/059043 WO2014174986A1 (ja) | 2013-04-26 | 2014-03-27 | ガラス板製造装置、及びガラス板製造方法 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2016128363A (ja) |
KR (1) | KR20160002827A (ja) |
CN (1) | CN105143124B (ja) |
WO (1) | WO2014174986A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015174785A (ja) * | 2014-03-14 | 2015-10-05 | 日本電気硝子株式会社 | 異物除去部材、異物除去装置、およびガラスの製造方法 |
CN109422444A (zh) * | 2017-09-01 | 2019-03-05 | Agc株式会社 | 浮法玻璃制造装置及浮法玻璃制造方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102070683B1 (ko) * | 2016-02-02 | 2020-01-29 | 주식회사 엘지화학 | 플로트 유리 제조 장치 및 방법 |
CN106242252B (zh) * | 2016-09-09 | 2018-09-04 | 蚌埠中建材信息显示材料有限公司 | 一种辊道下部的密封装置 |
JP2019218222A (ja) * | 2018-06-18 | 2019-12-26 | 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 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11335127A (ja) * | 1998-05-26 | 1999-12-07 | Central Glass Co Ltd | フロートガラス用搬送ロールに付着した錫の除去部材 |
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 |
WO2009014028A1 (ja) * | 2007-07-23 | 2009-01-29 | Asahi Glass Co., Ltd. | フロートガラスの製造方法及びフロートガラスの製造設備 |
JP2009046366A (ja) * | 2007-08-22 | 2009-03-05 | Asahi Glass Co Ltd | ガラス板製造装置、及びガラス板製造方法 |
JP2011132099A (ja) * | 2009-12-25 | 2011-07-07 | Nippon Electric Glass Co Ltd | ガラス板の製造方法およびその製造装置 |
JP2011157250A (ja) * | 2010-02-03 | 2011-08-18 | Asahi Glass Co Ltd | フロートガラス用搬送ロールの付着物除去部材 |
WO2013061793A1 (ja) * | 2011-10-28 | 2013-05-02 | 旭硝子株式会社 | レアーロールのクリーニング方法及びガラス板製造装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102432161A (zh) * | 2010-09-29 | 2012-05-02 | 旭硝子株式会社 | 利用浮法制造玻璃板的方法 |
-
2013
- 2013-04-26 JP JP2013093956A patent/JP2016128363A/ja active Pending
-
2014
- 2014-03-27 KR KR1020157030639A patent/KR20160002827A/ko not_active Application Discontinuation
- 2014-03-27 CN CN201480023415.9A patent/CN105143124B/zh active Active
- 2014-03-27 WO PCT/JP2014/059043 patent/WO2014174986A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11335127A (ja) * | 1998-05-26 | 1999-12-07 | Central Glass Co Ltd | フロートガラス用搬送ロールに付着した錫の除去部材 |
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 |
WO2009014028A1 (ja) * | 2007-07-23 | 2009-01-29 | Asahi Glass Co., Ltd. | フロートガラスの製造方法及びフロートガラスの製造設備 |
JP2009046366A (ja) * | 2007-08-22 | 2009-03-05 | Asahi Glass Co Ltd | ガラス板製造装置、及びガラス板製造方法 |
JP2011132099A (ja) * | 2009-12-25 | 2011-07-07 | Nippon Electric Glass Co Ltd | ガラス板の製造方法およびその製造装置 |
JP2011157250A (ja) * | 2010-02-03 | 2011-08-18 | Asahi Glass Co Ltd | フロートガラス用搬送ロールの付着物除去部材 |
WO2013061793A1 (ja) * | 2011-10-28 | 2013-05-02 | 旭硝子株式会社 | レアーロールのクリーニング方法及びガラス板製造装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015174785A (ja) * | 2014-03-14 | 2015-10-05 | 日本電気硝子株式会社 | 異物除去部材、異物除去装置、およびガラスの製造方法 |
CN109422444A (zh) * | 2017-09-01 | 2019-03-05 | Agc株式会社 | 浮法玻璃制造装置及浮法玻璃制造方法 |
CN109422444B (zh) * | 2017-09-01 | 2022-05-27 | Agc株式会社 | 浮法玻璃制造装置及浮法玻璃制造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN105143124B (zh) | 2017-12-01 |
JP2016128363A (ja) | 2016-07-14 |
CN105143124A (zh) | 2015-12-09 |
KR20160002827A (ko) | 2016-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014174986A1 (ja) | ガラス板製造装置、及びガラス板製造方法 | |
TWI520917B (zh) | Glass substrate manufacturing method and glass substrate | |
KR101512607B1 (ko) | 리어 롤의 클리닝 방법 및 유리판 제조 장치 | |
JP5152478B2 (ja) | ガラス板製造装置、及びガラス板製造方法 | |
US10106457B2 (en) | Vapor deposition systems and processes for the protection of glass sheets | |
JP5474760B2 (ja) | ガラス搬送用ロールおよびその製造方法ならびにそれを用いた板ガラスの製造方法 | |
KR20150087277A (ko) | 유리 리본으로부터 유리 시트를 분리하는 분리 장치 및 방법 | |
JP2015518813A (ja) | 低微粒子欠陥薄ガラスシートを形成するための静電的方法及び装置 | |
US10399894B2 (en) | Glass sheet and method for producing glass sheet | |
CN111601781A (zh) | 具有提高的边缘质量的玻璃片及其生产方法 | |
JP2012116748A (ja) | 長鎖有機材料を用いたガラス表面保護 | |
KR102209272B1 (ko) | 유리 반송용 롤 및 그 제조 방법, 및 그것을 사용한 판 유리의 제조 방법 | |
CN109422444B (zh) | 浮法玻璃制造装置及浮法玻璃制造方法 | |
KR20190142728A (ko) | 플로트 유리 제조 장치 및 플로트 유리 제조 방법 | |
KR101824585B1 (ko) | 플로트 유리 제조 장치 및 방법 | |
JP7570600B2 (ja) | ガラス物品の製造方法及びその製造装置 | |
JP6256860B2 (ja) | 異物除去部材、異物除去装置、およびガラスの製造方法 | |
TW201922638A (zh) | 玻璃物品的製造方法及其製造裝置 | |
KR102656489B1 (ko) | 유리 기판 | |
JP2000154028A (ja) | フロートガラス製造用ロールおよびフロートガラス製造方法 | |
JP2021169401A (ja) | ガラス物品の製造方法及びその製造装置 | |
KR20230159690A (ko) | 화학 강화용의 유리판, 강화 유리판의 제조 방법, 및 유리판 | |
CN111977956A (zh) | 浮法玻璃制造装置和浮法玻璃制造方法 | |
Chien et al. | Effect of Al2O3 coated glass preform on glass-mold sticking behavior | |
KR20120026346A (ko) | 플로트 배스용 내화 벽돌 및 그 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480023415.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14788379 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20157030639 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14788379 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: JP |