WO2018151166A1 - 溶融ガラスの成形方法、成形装置、およびガラス製品の製造方法 - Google Patents
溶融ガラスの成形方法、成形装置、およびガラス製品の製造方法 Download PDFInfo
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- WO2018151166A1 WO2018151166A1 PCT/JP2018/005120 JP2018005120W WO2018151166A1 WO 2018151166 A1 WO2018151166 A1 WO 2018151166A1 JP 2018005120 W JP2018005120 W JP 2018005120W WO 2018151166 A1 WO2018151166 A1 WO 2018151166A1
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- glass ribbon
- glass
- molten
- molten metal
- temperature
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/061—Forming glass sheets by lateral drawing or extrusion
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/12—Making multilayer, coloured or armoured glass
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
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- 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
- C03B25/093—Annealing glass products in a continuous way with horizontal displacement of the glass products of glass sheets being in a horizontal position on a fluid support, e.g. a gas or molten metal
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
Definitions
- the present invention relates to a molten glass molding method, a molten glass molding apparatus, and a glass product manufacturing method capable of easily improving the molding accuracy of molten glass.
- Patent Document 1 describes a method for forming multilayer glass in which three layers of belt-shaped molten glass are stacked.
- Patent Document 1 three layers of belt-shaped molten glass are laminated and supplied onto the surface of the molten metal, and a glass ribbon formed of the laminated molten glass is stretched in the width direction by a top roll to form molten glass. ing.
- a glass ribbon formed of the laminated molten glass is stretched in the width direction by a top roll to form molten glass.
- the thickness of the glass ribbon tends to be non-uniform in the width direction, and the molding accuracy of the glass ribbon is lowered.
- Patent Document 2 since the glass ribbon is stretched using the top roll, the thickness of the glass ribbon tends to be non-uniform.
- Patent Document 3 describes a method of forming molten glass on the surface of a molten metal while cooling the edge in the width direction of the glass ribbon and suppressing the width of the glass ribbon from shrinking. ing.
- the glass ribbon does not have to be stretched on the surface of the molten metal by a top roll or the like.
- the molding apparatus since it is necessary to cool only the edge in the width direction of the glass ribbon, the molding apparatus tends to become complicated, and the molten glass In some cases, it took time to form the film.
- the present invention has one object to provide a molten glass molding method that can easily improve the molding accuracy of molten glass, and a glass product manufacturing method using such a molding method. To do. Another object of the present invention is to provide a molten glass molding apparatus capable of improving the molding accuracy of molten glass with a simple structure, and a glass product manufacturing method using such a molding apparatus.
- the inventors do not adjust the thickness of the glass ribbon on the surface of the molten metal, but supply a glass ribbon whose thickness has been adjusted in advance on the surface of the molten metal.
- a new idea of maintaining the thickness of the glass ribbon on the surface was obtained.
- the molten glass can be formed without stretching the glass ribbon on the surface of the molten metal.
- the above problem can be solved by the following configuration based on this new idea.
- One aspect of the method for forming molten glass of the present invention is a method of discharging molten glass having a temperature equal to or higher than the softening point into a strip to form a glass ribbon, and supplying the ribbon onto the surface of the molten metal; A transfer step of transferring the glass ribbon supplied to the glass ribbon, wherein the transfer step softens the glass ribbon to be transferred in a region upstream of the transfer direction, and the temperature of the glass ribbon is entirely in the width direction. A cooling step of cooling so as to be lower than the point is included.
- One aspect of the molten glass molding apparatus of the present invention includes a bathtub in which molten metal is stored, and a discharge portion that discharges a belt-shaped molten glass at a temperature equal to or higher than the softening point, and the molten glass is discharged from the discharge portion.
- a cooling device that cools in the region on the side, and the cooling device cools the glass ribbon so that the temperature of the glass ribbon is lower than the softening point in the entire width direction.
- One embodiment of the method for producing a glass product of the present invention includes a slow cooling step of slowly cooling the glass ribbon formed by the above molding method.
- a molten glass molding method capable of easily improving the molding accuracy of molten glass, and a glass product manufacturing method using the molding method.
- a molten glass molding apparatus capable of improving the molding accuracy of molten glass with a simple structure, and a glass product manufacturing method using such a molding apparatus.
- an XYZ coordinate system is shown as an appropriate three-dimensional orthogonal coordinate system
- the Z-axis direction is the vertical direction
- the X-axis direction is the length direction of the molding apparatus 1 for molten glass G shown in FIGS.
- the axial direction be the width direction of the molding apparatus 1.
- the + Z side is the upper vertical direction
- the ⁇ Z side is the lower vertical direction.
- the length direction of the forming apparatus 1 is the left-right direction in FIG. 1, and in this specification, the length direction of the glass ribbon GR.
- molding apparatus 1 is an up-down direction in FIG. 2, and is a direction orthogonal to both the conveyance direction and vertical direction of the glass ribbon GR.
- the glass ribbon GR is a band-shaped glass formed from the molten glass G.
- the transfer direction of the glass ribbon GR is a direction in which the glass ribbon GR is transferred in a plan view of the molding apparatus 1.
- the upstream side in the transfer direction and the downstream side in the transfer direction are with respect to the transfer direction of the glass ribbon GR in the molding apparatus 1.
- the + X side is the downstream side in the transfer direction
- the ⁇ X side is the upstream side in the transfer direction.
- the width direction means the width direction of the forming apparatus 1 and the width direction of the glass ribbon GR
- the transfer direction refers to the transfer direction of the glass ribbon GR. Shall mean.
- a molding apparatus 1 according to the first embodiment shown in FIG. 1 is an apparatus for molding a molten glass G.
- the molding apparatus 1 includes a bus 10, a roof (not shown), a supply device 20, a dross box 11, and a cooling device 30.
- the bath 10 has a bathtub 10a that opens upward in the vertical direction.
- Molten metal M is stored in the bathtub 10a.
- the molten metal M is preferably, for example, molten tin, molten tin alloy or the like. It is preferable that the temperature of the molten metal M becomes low as it goes downstream in the transfer direction.
- a roof (not shown) covers the upper side of the bus 10.
- a space surrounded by a roof is provided above the bus 10 in the vertical direction.
- the space is preferably filled with a reducing (non-oxidizing) gas or an inert gas in order to prevent the molten metal M in the bathtub 10a from being oxidized.
- the reducing gas include a mixed gas of nitrogen
- the supply device 20 is provided on the upstream side of the bus 10 in the transfer direction.
- the supply device 20 includes a glass melting furnace (not shown) and a discharge unit 21.
- the glass melting furnace manufactures molten glass G by melting glass raw materials.
- the discharge unit 21 discharges the molten glass G.
- the discharge unit 21 has a cylindrical shape extending in a direction inclined in a direction positioned on the lower side in the vertical direction from the upstream side in the transfer direction toward the downstream side in the transfer direction.
- a slit 21 a that connects the inside and the outside of the discharge unit 21 is formed at the tip of the discharge unit 21.
- the slit 21a extends in the width direction.
- the molten glass G in the discharge part 21 is discharged
- the dimension in the width direction of the glass ribbon GR discharged from the slit 21a is substantially the same as the dimension in the width direction of the slit 21a.
- the glass ribbon GR discharged from the slit 21a is supplied onto the surface Ma of the molten metal M as shown in FIG.
- the belt-shaped molten glass G is referred to as a glass ribbon GR.
- the discharge portion 21 is disposed on the upper side in the vertical direction of the surface Ma of the molten metal M. Therefore, the glass ribbon GR discharged from the slit 21a of the discharge unit 21 falls downward in the vertical direction and is supplied onto the surface Ma of the molten metal M. In this way, the supply device 20 discharges the glass ribbon GR from the discharge unit 21 and supplies the glass ribbon GR onto the surface Ma of the molten metal M.
- the temperature of the glass ribbon GR discharged from the discharge unit 21 is equal to or higher than the softening point.
- the softening point of the molten glass G is, for example, about 750 ° C. when the molten glass G is soda lime glass.
- the upper limit of the temperature of the glass ribbon GR discharged from the discharge unit 21 is not particularly limited, it is preferable that the temperature is the softening point of the molten glass G + 500 ° C. or less.
- the temperature of the glass ribbon GR discharged from the discharge unit 21 is preferably a temperature at which the viscosity ⁇ [dPa ⁇ s] of the molten glass G falls within the range of 1.5 ⁇ log ⁇ ⁇ 5. .
- the temperature of the glass ribbon GR discharged from the discharge unit 21 is preferably about 940 ° C. or higher and 1600 ° C. or lower.
- the viscosity ⁇ [dPa ⁇ s] of the molten glass G is a value measured based on JIS Z8803 (2011, liquid viscosity measurement method).
- a single cylindrical rotational viscometer was used.
- a GM series inner cylinder rotational viscometer which is a product of Motoyama Co., Ltd. (Osaka, Japan) can be used.
- the dross box 11 is provided on the downstream side in the transfer direction of the bus 10.
- the dross box 11 includes a transfer device 50 that transfers the glass ribbon GR supplied onto the surface Ma of the molten metal M.
- the transfer device 50 includes a plurality of glass transfer rolls 51.
- the glass transfer roll 51 transfers the glass ribbon GR supplied to the surface Ma of the molten metal M from the upstream side in the transfer direction toward the downstream side in the transfer direction.
- the glass transfer roll 51 pulls up the glass ribbon GR from the surface Ma of the molten metal M and conveys it to a slow cooling furnace (not shown).
- a slow cooling furnace is provided downstream of the dross box 11 in the transfer direction.
- the slow cooling furnace preferably cools the temperature of the glass ribbon GR to the strain point or lower while transferring the glass ribbon GR formed by the forming apparatus 1 in the transfer direction.
- the temperature in the slow cooling furnace is, for example, about 700 ° C. on the upstream side in the transfer direction, and is, for example, about 300 ° C. on the downstream side in the transfer direction.
- the cooling device 30 cools the glass ribbon GR to be transferred in the upstream area in the transfer direction.
- the cooling device 30 cools the glass ribbon GR so that the temperature of the glass ribbon GR is lower than the softening point in the entire width direction. More specifically, the cooling device 30 preferably cools the glass ribbon GR so that the temperature of the glass ribbon GR is lower than the softening point and higher than the annealing point in the entire width direction.
- the annealing point of the molten glass G is, for example, about 560 ° C. when the molten glass G is soda lime glass. That is, for example, when the molten glass G is soda lime glass, the cooling device 30 is configured such that the temperature of the glass ribbon GR to be transferred is about 560 ° C. or more and 750 ° C. or less in the entire width direction. The glass ribbon GR is cooled so as to become.
- the viscosity ⁇ [dPa ⁇ s] of the glass ribbon GR (molten glass G) is 7 ⁇ log ⁇ ⁇ 13 It is preferable to be within the range.
- the region on the upstream side in the transfer direction includes, for example, a region located on the upstream side in the transfer direction from the center in the transfer direction of the bathtub 10a. Further, the upstream region in the transfer direction includes, for example, a range of preferably about 500 mm or less on the downstream side in the transfer direction from the portion of the molten metal M with which the glass ribbon GR discharged from the discharge unit 21 first contacts.
- the cooling device 30 includes a temperature adjusting unit 31 and a first cooling unit 32. It is preferable that the temperature adjustment part 31 makes the temperature of the molten metal M in the part to which the glass ribbon GR is supplied be lower than the softening point of the molten glass G and higher than the annealing point of the molten glass G. That is, for example, when the molten glass G is soda lime glass, the temperature adjusting unit 31 sets the temperature of the molten metal M in the portion to which the glass ribbon GR is supplied to about 560 ° C. or more and 750 ° C. or less. The temperature of the molten metal M adjusted by the temperature adjusting unit 31 is lower than the temperature of the conventional molten metal M.
- the portion of the molten metal M to which the glass ribbon GR is supplied includes the portion of the molten metal M with which the glass ribbon GR discharged from the discharge portion 21 first comes into contact and the vicinity thereof.
- the glass ribbon GR can be cooled when the glass ribbon GR discharged from the discharge unit 21 contacts the molten metal M whose temperature has been adjusted by the temperature adjustment unit 31.
- the metal constituting the molten metal M is melted when the temperature inside the bath 10 and the roof becomes high.
- the temperature adjustment unit 31 is not provided, the temperature of the molten metal M is, for example, about 1050 ° C. on the upstream side in the transfer direction.
- the temperature adjusting unit 31 adjusts the temperature of the molten metal M thus melted to the above-described temperature by cooling.
- the method for cooling the molten metal M is not particularly limited, and may be air cooling, liquid cooling, or heat dissipation to the downstream side in the transfer direction by heat conduction.
- the temperature adjusting unit 31 heats the molten metal M to melt the molten metal M.
- the temperature of the metal M may be set to a desired temperature.
- the first cooling unit 32 is arranged on the upper side in the vertical direction of the bathtub 10a.
- the first cooling unit 32 cools the glass ribbon GR from the side opposite to the molten metal M side, that is, from the upper side in the vertical direction.
- the configuration of the first cooling unit 32 is not particularly limited as long as the glass ribbon GR can be cooled.
- the first cooling unit 32 may be a blower that blows air to the glass ribbon GR, or may be a cooling pipe having a flow path through which a refrigerant flows.
- the fin for thermal radiation may be provided in the cooling pipe.
- the molding apparatus 1 can further include an adjustment device 60.
- the adjusting device 60 can adjust the distance between the discharge part 21 and the surface Ma of the molten metal M.
- the distance between the discharge part 21 and the surface Ma of the molten metal M is a vertical distance H1 between the slit 21a of the discharge part 21 and the surface Ma of the molten metal M.
- the distance H1 is, for example, preferably 1 mm or more and 100 mm or less, and more preferably 5 mm or more and 50 mm or less.
- the adjustment device 60 includes a lifting device 61.
- the elevating device 61 is provided at the end on the upper side in the vertical direction at the end on the upstream side in the transfer direction of the bus 10 and supports the supply device 20 from the lower side in the vertical direction.
- the lifting device 61 moves the supply device 20 up and down.
- the adjustment device 60 moves the discharge unit 21 up and down by moving the supply device 20 up and down by the lifting device 61, and adjusts the vertical distance H ⁇ b> 1 between the slit 21 a of the discharge unit 21 and the surface Ma of the molten metal M. it can.
- the molding apparatus 1 further includes second cooling units 33 and 34.
- the 2nd cooling parts 33 and 34 are arranged between bathtub 10a and discharge part 21 in the perpendicular direction.
- the second cooling unit 34 is arranged at an interval on the upstream side in the transfer direction of the second cooling unit 33.
- the glass ribbon GR discharged from the discharge unit 21 is supplied to the surface Ma of the molten metal M through the transfer direction between the second cooling unit 33 and the second cooling unit 34.
- the second cooling units 33 and 34 cool the glass ribbon GR after the glass ribbon GR is discharged from the discharge unit 21 until it is supplied onto the surface Ma of the molten metal M.
- the second cooling units 33 and 34 may be a blower that blows air to the glass ribbon GR, or may be a cooling pipe having a flow path through which a refrigerant flows.
- the forming apparatus 1 further includes a plurality of guide rolls 70 as shown in FIG.
- the guide roll 70 is disposed opposite to the wall portions on both sides in the width direction of the bathtub 10a.
- the guide roll 70 includes a guide roll main body 72 that supports an end of the glass ribbon GR in the width direction, and a rotary shaft 71 that is connected to the guide roll main body 72.
- the rotating shaft 71 extends in the width direction.
- a driving device such as an electric motor
- the rotation speed of the guide roll 70 is the same as the rotation speed of the glass transfer roll 51 in the transfer device 50.
- the guide roll 70 has a different function from the top roll described in the background art and the top roll for spreading the glass ribbon used in the float manufacturing method as the conventional technique in the width direction and the transfer direction. is there.
- the molding method of the first embodiment includes a supply step S11 and a transfer step S12.
- the supplying step S11 is a step of discharging the molten glass G having a temperature equal to or higher than the softening point into a belt shape to form a glass ribbon GR and supplying the glass ribbon GR onto the surface Ma of the molten metal M.
- molten glass G having a temperature equal to or higher than the softening point is manufactured in a glass melting furnace (not shown) in the supply device 20.
- the molten glass G manufactured with the glass melting furnace is discharged
- the glass ribbon GR discharged from the slit 21a can be dropped onto the surface Ma of the molten metal M by dropping downward in the vertical direction.
- the glass ribbon GR can be cooled while the glass ribbon GR is dropped using the second cooling units 33 and 34. At this time, the temperature of the glass ribbon GR is prevented from becoming lower than the softening point.
- the viscosity ⁇ [dPa ⁇ s] of the glass ribbon GR does not satisfy 1.5> log ⁇ .
- the transfer step S12 is a step of transferring the glass ribbon GR supplied onto the surface Ma of the molten metal M.
- the glass ribbon GR can be transferred by the glass transfer roll 51 of the transfer device 50 while supporting the both ends in the width direction of the glass ribbon GR with the plurality of guide rolls 70. In the transfer step S12, it is preferable not to pull the glass ribbon GR.
- not pulling the glass ribbon GR includes not applying a force to the glass ribbon GR to stretch and deform the glass ribbon GR in at least one of the width direction and the transfer direction.
- a force for transferring the glass ribbon GR is applied to the glass ribbon GR, but a force for deforming the glass ribbon GR in at least one of the width direction and the transfer direction is applied. No. That is, when the glass ribbon GR is not pulled in the transfer step S12, when the glass ribbon GR is transferred, the glass ribbon GR is stretched in the width direction and deformed, or the glass ribbon GR is stretched in the transport direction and deformed. Is not added to the glass ribbon GR.
- the transfer step S12 includes a cooling step S12a for cooling the glass ribbon GR to be transferred in a region upstream of the transfer direction so that the temperature of the glass ribbon GR is lower than the softening point in the entire width direction.
- the cooling step S12a of the first embodiment using the cooling device 30, the glass ribbon GR is placed so that the temperature of the glass ribbon GR is lower than the softening point and higher than the annealing point in the entire width direction. Can be cooled.
- the glass ribbon GR is cooled by the molten metal M in the cooling step S12a.
- the temperature of the molten metal M in the portion to which the glass ribbon GR is supplied is lower than the softening point of the molten glass G and the annealing point of the molten glass G using the temperature adjusting unit 31 of the cooling device 30.
- the glass ribbon GR is supplied onto the surface Ma of the molten metal M and cooled by being in contact with the molten metal M. .
- the glass ribbon GR in the cooling step S12a, can be cooled from the opposite side to the molten metal M, that is, from the upper side in the vertical direction in the first embodiment, using the first cooling unit 32 of the cooling device 30.
- the glass ribbon GR in 1st Embodiment, can be cooled using the molten metal M and the 1st cooling part 32 in cooling process S12a.
- the glass ribbon GR to be transferred is cooled in the upstream region in the transfer direction so that the temperature of the glass ribbon GR is lower than the softening point.
- the temperature of the glass ribbon GR may be changed in any way.
- the temperature of the glass ribbon GR may be lower than the softening point when it is in contact with the molten metal M, or may be gradually lowered and lower than the softening point after being in contact with the molten metal M.
- the molten glass G forming apparatus 801 of the comparative example includes a plurality of top rolls 880 used in a conventional float manufacturing method.
- the top roll 880 is disposed opposite to the wall portions on both sides in the width direction of the bathtub 10a.
- the top roll 880 includes a top roll main body 882 that supports the end of the glass ribbon GR in the width direction, and a rotation shaft 881 connected to the top roll main body 882.
- the plurality of top rolls 880 include a top roll 880 in which the rotation shaft 881 extends in the width direction, and a top roll 880 in which the rotation shaft 881 extends while being inclined to the downstream side in the transport direction with respect to the width direction.
- the dimension in the width direction of the slit 821a in the discharge part 821 is smaller than the dimension in the width direction of the glass ribbon GR to be formed.
- the glass ribbon GR discharged from the slit 821a and supplied onto the surface Ma of the molten metal M is pulled and stretched in the width direction by the top roll 880.
- the rotation speed of the top roll 880 is slower than the rotation speed of the glass transfer roll 51 of the transfer device 50. Therefore, the glass ribbon GR is pulled in the transfer direction and stretched by the difference between the rotation speed of the top roll 880 and the rotation speed of the glass transfer roll 51.
- the glass ribbon GR supplied on the surface Ma of the molten metal M is pulled and stretched in the width direction and the transfer direction.
- the temperature of the molten glass G supplied on the surface Ma of the molten metal M is equal to or higher than the softening point. It is.
- the temperature of the molten metal M in the portion to which the glass ribbon GR is supplied is, for example, about 1050 ° C.
- the inventors do not adjust the thickness of the glass ribbon GR on the surface Ma of the molten metal M, but instead adjust the thickness of the glass ribbon GR on the surface Ma of the molten metal M in advance.
- the molten glass G can be formed without stretching the glass ribbon GR on the surface Ma of the molten metal M.
- the glass ribbon GR which is the molten glass G formed into a band shape using the cooling device 30, is a glass ribbon in the entire width direction in the region upstream of the transfer direction. Cooling is performed so that the temperature of GR is lower than the softening point.
- the glass ribbon GR supplied on the surface Ma of the molten metal M is deformed so as to have a predetermined equilibrium thickness due to surface tension. Therefore, in the comparative example, the glass ribbon GR was formed thinner than the equilibrium thickness by pulling and stretching the glass ribbon GR.
- the equilibrium thickness of the glass ribbon GR deformed by the surface tension is about 6 mm.
- the glass ribbon GR transported on the surface Ma of the molten metal M is cooled so as to be lower than the softening point in the upstream region in the transport direction. Therefore, it can suppress that the glass ribbon GR supplied on the surface Ma of the molten metal M deform
- the fact that the thickness of the glass ribbon GR can be maintained on the surface Ma of the molten metal M means that the thickness of the glass ribbon GR can be substantially maintained in addition to the case where the thickness of the glass ribbon GR can be strictly maintained. Including cases.
- the case where the thickness of the glass ribbon GR can be substantially maintained means that the ratio of the thickness of the glass ribbon GR finally formed to the thickness of the glass ribbon GR when supplied onto the surface Ma of the molten metal M is, for example, 1 Including the case of greater than 0.0 and 1.3 or less.
- the glass ribbon GR shrinks in the width direction until the temperature of the glass ribbon GR becomes lower than the softening point.
- the thickness of the ribbon GR increases.
- the time until the temperature of the glass ribbon GR becomes lower than the softening point on the surface Ma of the molten metal M can be estimated from the physical properties of the glass ribbon GR, the degree of cooling by the cooling device 30, and the like.
- the change in the dimension in the width direction of the glass ribbon GR and the change in the thickness of the glass ribbon GR change depending on the viscosity ⁇ of the glass ribbon GR, that is, the temperature of the glass ribbon GR.
- the change in the thickness of the glass ribbon GR on the surface Ma of the molten metal M is estimated, and the thickness of the glass ribbon GR supplied in the supply step S11 is reduced by the amount of change on the surface Ma of the molten metal M. It is good also as an adjusted value. Thereby, the molten glass G can be accurately molded to a desired thickness.
- the glass ribbon GR is compared with the case where only the edge in the width direction of the glass ribbon GR is cooled. Cooling is easy. Further, the configuration of the cooling device 30 can be simplified. Therefore, molding of the molten glass G can be facilitated, and the structure of the molding apparatus 1 can be simplified. As described above, according to the first embodiment, the structure of the molding apparatus 1 can be simplified, and the molding accuracy of the molten glass G can be easily improved.
- bath 10 can be made small, and the shaping
- the temperature of the glass ribbon GR is lower than the softening point in the entire width direction, and the annealing point is low.
- the glass ribbon GR can be cooled so as to be higher. Therefore, it can suppress that the temperature of the glass ribbon GR changes excessively, and can suppress that the glass ribbon GR is damaged.
- the glass ribbon GR is supplied onto the surface Ma of the molten metal M adjusted to a temperature lower than the softening point of the molten glass G and higher than the annealing point of the molten glass G.
- the glass ribbon GR can be cooled by the molten metal M. Therefore, the cooling step S12a can be started immediately after the glass ribbon GR comes into contact with the surface Ma of the molten metal M and the transfer step S12 is started.
- time until the temperature of the glass ribbon GR becomes lower than a softening point can be shortened, and it can suppress that the glass ribbon GR shrink
- the glass ribbon GR can be cooled from the molten metal M side and the opposite side using the 1st cooling part 32 in cooling process S12a. Therefore, by combining with cooling by the molten metal M, the glass ribbon GR can be cooled from both sides in the vertical direction. Thereby, time until the temperature of the glass ribbon GR becomes lower than a softening point can be shortened, and it can suppress more that the glass ribbon GR shrink
- the glass ribbon GR is dropped to the perpendicular direction downward from the discharge part 21 arrange
- the viscosity ⁇ [dPa ⁇ s] of the glass ribbon GR in the supplying step S11 is preferably in a range of 1.5 ⁇ log ⁇ ⁇ 5. Therefore, the viscosity of the glass ribbon GR to be dropped can be made relatively small, and the glass ribbon GR can be easily extended by its own weight. Thereby, it is easy to adjust the thickness of the glass ribbon GR in the supply step S11.
- the glass ribbon GR can be cooled using the second cooling parts 33 and 34 while the glass ribbon GR is dropped in the supplying step S11. Therefore, for example, when the viscosity of the glass ribbon GR when discharged from the discharge unit 21 is too small and the thickness of the glass ribbon GR becomes too thin when dropped, the glass ribbon GR is cooled to cool the glass ribbon GR. The viscosity of can be increased. Thereby, when the glass ribbon GR is dropped, the thickness of the glass ribbon GR can be suitably changed.
- the molten glass G can be discharged
- the adjusting device 60 capable of adjusting the vertical distance between the discharge part 21 and the surface Ma of the molten metal M.
- the change in the thickness of the glass ribbon GR caused by dropping the glass ribbon GR downward in the vertical direction becomes larger as the time for dropping downward in the vertical direction becomes longer. That is, as the vertical distance between the discharge portion 21 and the surface Ma of the molten metal M is increased and the time for the glass ribbon GR to fall is increased, the glass ribbon GR is stretched by its own weight and the glass ribbon GR The thickness is reduced.
- the thickness of GR increases.
- the thickness of the glass ribbon GR supplied on the surface Ma of the molten metal M can be adjusted by adjusting the vertical distance between the discharge portion 21 and the surface Ma of the molten metal M by the adjusting device 60.
- the adjustment device 60 can include the lifting device 61 that lifts and lowers the supply device 20. Therefore, the vertical distance between the discharge unit 21 and the surface Ma of the molten metal M can be easily adjusted by moving the supply device 20 up and down. Further, for example, when the temperature of the molten glass G in contact with the inner wall of the discharge part 21 is maintained at a specific temperature, a part of the molten glass G may be crystallized to cause devitrification. When devitrification occurs, the crystallized molten glass G may adhere to the inner wall of the discharge part 21, and the flatness of the shape of the glass ribbon GR discharged from the discharge part 21 may be deteriorated.
- the temperature of the molten glass G discharged from the discharge portion is increased to reduce the viscosity of the molten glass G, the speed of the molten glass G that falls is too high, and the formed glass ribbon In some cases, GR was not properly received. Therefore, it has been necessary to lower the temperature of the molten glass G to some extent and increase the viscosity of the molten glass G. Therefore, the temperature of the molten glass G is maintained at a temperature at which devitrification occurs, and devitrification occurs, and the flatness of the shape of the glass ribbon GR may be lowered.
- the molten glass G can be melted even if the temperature of the molten glass G is increased and the viscosity of the molten glass G is decreased.
- Glass G can be suitably shaped. Thereby, even if the temperature of the molten glass G is made higher than the temperature at which devitrification occurs, the molten glass G can be suitably formed.
- the specific temperature at which the molten glass G is devitrified is about 1000 ° C.
- the guide roll 70 can be provided as shown in FIG.
- the guide roll 70 can suppress that the position of the glass ribbon GR in the width direction shifts. Thereby, the glass ribbon GR can be transported more smoothly on the surface Ma of the molten metal M.
- the guide roll 70 since the guide roll 70 is rotating at the same rotational speed as the glass transfer roll 51 of the transfer apparatus 50, it does not pull the glass ribbon GR.
- the temperature of the molten metal M in the part to which the glass ribbon GR is supplied may be equal to or higher than the softening point of the molten glass G. Even in this case, the glass ribbon GR can be cooled if the temperature of the molten metal M in the portion to which the glass ribbon GR is supplied is lower than that in the comparative example.
- the temperature of the molten metal M in the portion to which the glass ribbon GR is supplied can be set to, for example, 900 ° C. or less using the temperature adjustment unit 31.
- the temperature of the molten metal M in the portion to which the glass ribbon GR is supplied can be sufficiently lowered as compared with the comparative example, and the glass ribbon GR can be suitably cooled.
- the cooling device 30 may cool the glass ribbon GR so that the temperature of the glass ribbon GR is equal to or lower than the annealing point in the entire width direction in the upstream region in the transfer direction.
- the cooling device 30 may have a configuration including only one of the temperature adjustment unit 31 and the first cooling unit 32.
- the glass ribbon GR supplied from the supply device 20 may be supplied onto the surface Ma of the molten metal M without dropping downward in the vertical direction.
- the glass ribbon GR may be discharged from the supply device 20 in the transfer direction and supplied onto the surface Ma of the molten metal M.
- the thickness of the slit 21 a is adjusted so that the thickness of the glass ribbon GR becomes a desired thickness when the glass ribbon GR is discharged from the discharge unit 21.
- only one second cooling unit 33, 34 may be provided, or both may not be provided.
- the adjusting device 60 may not be provided.
- the guide roll 70 may not be provided.
- a heating device for heating the glass ribbon GR may be provided on the downstream side in the transfer direction.
- the glass ribbon GR needs to have a certain degree of flexibility. Therefore, the temperature of the glass ribbon GR needs to be higher than the annealing point. .
- the glass ribbon GR may be cooled on the downstream side in the transfer direction, and the temperature of the glass ribbon GR may be below the annealing point. In such a case, if a heating device (not shown) for heating the glass ribbon GR is provided on the downstream side in the transfer direction, the temperature of the glass ribbon GR when being transferred from the bus 10 to the dross box 11 is gradually decreased. It can be higher than the cold spot, and the glass ribbon GR can be suitably transferred to the dross box 11.
- the molding apparatus can further include a first shielding unit 90 indicated by a two-dot chain line in FIGS. 1 and 2 in the molding apparatus 1 of the first embodiment described above.
- the 1st shielding part 90 is rectangular plate shape.
- the planar view shape of the 1st shielding part 90 is a rectangular shape long in the width direction, as shown in FIG.
- the end of the first shield 90 on the upstream side in the transfer direction is connected to the inner wall of the bathtub 10a on the upstream side in the transfer direction. End portions on both sides in the width direction of the first shielding portion 90 are connected to inner walls on both sides in the width direction of the bathtub 10a. As shown in FIG.
- the first shielding portion 90 covers a portion of the surface Ma of the molten metal M on the upstream side in the transport direction from the portion to which the glass ribbon GR is supplied. That is, the 1st shielding part 90 is being fixed to the inner wall of the bathtub 10a in the part located in the perpendicular direction upper side rather than the molten metal M is stored. The first shielding part 90 is disposed between the discharge part 21 and the molten metal M in the vertical direction.
- the 1st shielding part 90 can shield at least one part of the radiant heat radiated
- the material of the first shielding part 90 is preferably, for example, graphite, ceramics, fiber board or the like.
- the thickness of the glass ribbon GR can be adjusted, for example, by dropping in the supply step S11, and the thickness of the glass ribbon GR can be more easily set to a desired thickness.
- the 1st shielding part 90 can be arrange
- FIG. Therefore, at least a part of the radiant heat radiated from the discharge part 21 toward the molten metal M can be shielded, and the temperature of the discharge part 21 can be suppressed from decreasing.
- the 1st shielding part 90 can shield at least one part of the radiant heat radiated
- the discharge part 121 of the supply apparatus 120 of 2nd Embodiment shown in FIG. 4 can be used as the columnar member extended in the width direction.
- the discharge part 121 preferably has an upper part 121a and a lower part 121b.
- the upper part 121a has a rectangular column shape extending in the width direction.
- a recess 121c that is recessed downward in the vertical direction is formed on the upper surface of the upper part 121a. Molten glass G is supplied into the recess 121c.
- the lower part 121b is connected to the lower side in the vertical direction of the upper part 121a.
- the lower part 121b has a triangular prism shape extending in the width direction.
- the lower part 121b is convex at an acute angle toward the lower side in the vertical direction.
- the discharge part 121 preferably has a first surface 121d and a second surface 121e through which the molten glass G is transmitted.
- the first surface 121d is a surface on the upstream side of the discharge unit 121 in the transfer direction.
- the first surface 121d is configured by connecting a surface on the upstream side in the transfer direction of the upper part 121a and a surface on the upstream side in the transfer direction of the lower part 121b.
- the surface on the upstream side in the transfer direction of the upper part 121a is a surface orthogonal to the transfer direction.
- the surface on the upstream side in the transfer direction of the lower part 121b is a flat inclined surface located on the downstream side in the transfer direction as it goes downward in the vertical direction.
- the second surface 121e is configured by connecting a surface on the downstream side in the transfer direction of the upper part 121a and a surface on the downstream side in the transfer direction of the lower part 121b.
- the surface on the downstream side in the transfer direction of the upper part 121a is a surface orthogonal to the transfer direction.
- the surface on the downstream side in the transfer direction of the lower part 121b is a flat inclined surface located on the upstream side in the transfer direction as it goes downward in the vertical direction.
- the lower end of the first surface 121d and the lower end of the second surface 121e are connected to each other.
- the lower end of the first surface 121d is the lower end of the upstream surface of the lower part 121b in the transfer direction.
- the lower end of the second surface 121e is the lower end of the lower surface 121b on the downstream side in the transfer direction.
- the supply device 120 supplies the molten glass G into the recess 121c and causes the molten glass G to overflow from the recess 121c.
- the molten glass G overflowing from the recess 121c travels along the first surface 121d and the second surface 121e and moves downward in the vertical direction while forming a strip shape.
- the molten glass G that travels through the first surface 121d is strip-shaped and becomes the first glass ribbon GRa.
- the molten glass G that travels along the second surface 121e is strip-shaped and becomes the second glass ribbon GRb.
- the first glass ribbon GRa and the second glass ribbon GRb are overlapped at the lower end of the discharge unit 121 to become the glass ribbon GR.
- the glass ribbon GR is supplied to the surface Ma of the molten metal M as in the first embodiment.
- the first glass ribbon GRa stripped along the first surface 121d and the second glass ribbon GRb stripped along the second surface 121e are overlapped and melted. It can be supplied on the surface Ma of the metal M.
- Other configurations and methods in the second embodiment are the same as those in the first embodiment. According to the second embodiment, as in the first embodiment, the structure of the molding apparatus can be simplified, and the molding accuracy of the molten glass G can be easily improved.
- 3rd Embodiment differs in the structure of a supply apparatus with respect to 1st Embodiment.
- the discharge part 221 of the supply apparatus 220 of 3rd Embodiment shown in FIG. 5 can be used as the columnar member extended in the width direction.
- the cross-sectional shape orthogonal to the width direction of the discharge part 221 is substantially trapezoidal.
- a concave portion 221b is formed on the upper surface of the discharge portion 221.
- the concave portion 221b is recessed downward in the vertical direction. Molten glass G is supplied into the recess 221b.
- the wall portion on the upstream side in the transfer direction of the recess 221b extends above the wall portion on the downstream side in the transfer direction of the recess 221b.
- the discharge part 221 can have an inclined surface 221a.
- the inclined surface 221a is a surface on the downstream side of the discharge unit 221 in the transfer direction.
- the inclined surface 221a is an inclined surface located on the lower side in the vertical direction as it faces the upper side in the vertical direction and goes from the upstream side in the transfer direction to the downstream side in the transfer direction.
- the supply device 220 supplies the molten glass G into the recess 221b and causes the molten glass G to overflow from the recess 221b.
- the molten glass G is downstream in the transfer direction of the recess 221b. It overflows only to the side.
- the overflowing molten glass G moves along the inclined surface 221a and moves downward in the vertical direction while becoming a glass ribbon GR.
- the glass ribbon GR formed in this way is supplied to the surface Ma of the molten metal M as in the first embodiment.
- a molten glass can be conveyed along the inclined surface 221a, and the molten glass G can be supplied on the surface Ma of the molten metal M as the glass ribbon GR.
- Other configurations and methods in the third embodiment are the same as those in the first embodiment. According to the third embodiment, as in the first embodiment, the structure of the molding apparatus can be simplified, and the molding accuracy of the molten glass G can be easily improved.
- the discharge part 321 of the supply apparatus 320 of 4th Embodiment can have the lip 321a and the twill 321b, as shown in FIG.
- the lip 321a extends in a direction inclined toward the lower side in the vertical direction as it goes from the upstream side in the transfer direction to the downstream side in the transfer direction.
- the upper surface of the lip 321a is an inclined surface that faces the upper side in the vertical direction and is located on the lower side in the vertical direction as it goes from the upstream side in the transfer direction to the downstream side in the transfer direction.
- the twill 321b is disposed with a gap above the lip 321a in the vertical direction, and extends in the vertical direction.
- the twill 321b is movable in the vertical direction.
- the molten glass G is blocked by the twill 321b, and a part of the molten glass G is discharged as a glass ribbon GR from the gap between the twill 321b and the lip 321a.
- the glass ribbon GR moves along the upper surface of the lip 321a and is discharged from the tip of the lip 321a toward the surface Ma of the molten metal M.
- the gap between the lip 321a and the twill 321b can be adjusted by moving the twill 321b in the vertical direction. Therefore, the thickness of the glass ribbon GR discharged from the gap between the lip 321a and the twill 321b can be easily adjusted.
- the fifth embodiment differs from the first embodiment in the configuration of the supply device and the adjustment device.
- the discharge part 421 of the supply apparatus 420 of 5th Embodiment can have the cylinder part 421a and the movable part 421b, as shown in FIG.
- the cylindrical portion 421a has a cylindrical shape extending in a direction inclined in a direction positioned on the lower side in the vertical direction from the upstream side in the transfer direction toward the downstream side in the transfer direction.
- the tip of the cylinder part 421a is open.
- the molten glass G becomes a glass ribbon GR by being transmitted along the inner wall surface on the lower side in the vertical direction among the inner wall surfaces of the cylindrical portion 421a.
- the inner wall surface on the lower side in the vertical direction among the inner wall surfaces of the cylindrical portion 421a is an inclined surface that is located on the lower side in the vertical direction as it faces the upper side in the vertical direction and goes from the upstream side in the transfer direction to the downstream side in the transfer direction.
- the movable part 421b may be attached to the cylinder part 421a so as to be movable along the direction in which the cylinder part 421a extends.
- the movable portion 421b is attached to a portion on the lower side in the vertical direction of the cylindrical portion 421a, and protrudes to the lower side in the oblique vertical direction on the downstream side in the transport direction with respect to the cylindrical portion 421a.
- the movable part 421b has, for example, a rectangular plate shape that is long in the width direction.
- the upper surface of the movable portion 421b is an inclined surface that is positioned on the lower side in the vertical direction as it goes downstream in the transfer direction.
- the glass ribbon GR discharged from the cylinder portion 421a is discharged from the discharge portion 421 along the upper surface of the movable portion 421b.
- the adjusting device 460 of the fifth embodiment can include an elevating device 461 and a movable portion 421b of the discharge portion 421.
- the lifting device 461 lifts and lowers the supply device 420.
- the lifting device 461 is not particularly limited as long as the feeding device 420 can be lifted and lowered.
- the lifting device 461 may be a device that supports and lifts the supply device 420 from the lower side in the vertical direction, like the lifting device 61 of the first embodiment, or connects the supply device 420 to a roof (not shown). An arm that expands and contracts in the vertical direction may be used.
- the adjustment device 460 can adjust the vertical distance between the discharge portion 421 and the surface Ma of the molten metal M by driving at least one of the lifting device 461 and the movable portion 421b.
- the vertical distance between the discharge part 421 and the surface Ma of the molten metal M is the vertical distance between the end of the upper surface of the movable part 421b on the downstream side in the transfer direction and the surface Ma of the molten metal M. is there.
- the distance in the vertical direction between the end of the upper surface of the movable part 421b on the downstream side in the transfer direction and the surface Ma of the molten metal M is a distance H2.
- the distance in the vertical direction between the end of the upper surface of the movable part 421b on the downstream side in the transfer direction and the surface Ma of the molten metal M is the distance.
- the distance H3 is greater than H2.
- the vertical distance between the discharge part 421 and the surface Ma of the molten metal M can be adjusted by moving the whole or part of the discharge part 421 by the adjusting device 460. Therefore, compared with the case where the bathtub 10a is raised / lowered, the adjustment apparatus 460 is easy to miniaturize and the whole shaping
- the sixth embodiment is different from the first embodiment in that heating units 641 and 642 are provided.
- molding apparatus 601 of 6th Embodiment can be equipped with the heating parts 641 and 642 as shown in FIG.
- the heating units 641 and 642 heat the discharge unit 21 in the supply step S11. More specifically, the heating units 641 and 642 heat the tip of the discharge unit 21.
- the heating unit 641 heats the lower portion of the discharge unit 21 in the vertical direction.
- the heating unit 642 heats the upper part of the discharge unit 21 in the vertical direction.
- the configuration of the heating units 641 and 642 is not particularly limited as long as the discharge unit 21 can be heated.
- the molding apparatus 601 does not include the first shielding unit 90 in the modification example of the first embodiment. Other configurations and methods in the sixth embodiment are the same as those in the first embodiment.
- the temperature of the molten glass G which is contacting with the inner wall of the discharge part 21 is made more than the temperature at which devitrification occurs. It can raise and it can control that devitrification arises in molten glass G. Thereby, it can suppress that the flatness of the shape of the glass ribbon GR discharged
- the heating units 641 and 642 may be provided.
- the 1st shielding part 90 in the modification of 1st Embodiment may be provided.
- the discharge part 21 can be heated by the heating parts 641 and 642 while suppressing the temperature drop of the discharge part 21 due to the molten metal M by the first shielding part 90, the molten glass G in the discharge part 21 is more suitably used. Can be maintained higher than the temperature at which devitrification occurs.
- the seventh embodiment is different from the first embodiment in that a second shielding part 790 is provided.
- molding apparatus 701 of 7th Embodiment can be provided with the 2nd shielding part 790, as shown in FIG.
- the second shielding part 790 has a rectangular plate shape.
- the second shielding part 790 extends in a direction inclined toward the upper side in the vertical direction as it goes from the upstream side in the transfer direction to the downstream side in the transfer direction.
- the second shielding part 790 is arranged on the upper side in the vertical direction with respect to the molten metal M and on the lower side in the vertical direction with respect to the discharge part 21.
- a through-hole 790a penetrating the second shielding part 790 in the vertical direction is formed in the second shielding part 790.
- the through hole 790a is, for example, a rectangular hole extending in the width direction.
- the glass ribbon GR discharged from the discharge part 21 moves through the through hole 790a to the lower side in the vertical direction than the second shielding part 790 and is supplied to the molten metal M.
- the second shielding part 790 shields at least a part of the radiant heat radiated from the discharge part 21 toward the molten metal M and the glass ribbon GR.
- a portion of the second shielding portion 790 located upstream of the glass ribbon GR in the transport direction is disposed between the discharge portion 21 and the molten metal M in the vertical direction, and is directed from the discharge portion 21 toward the molten metal M. To shield at least a part of the radiant heat radiated.
- the portion of the second shielding part 790 that is located downstream of the glass ribbon GR in the transport direction is disposed on the upper side in the vertical direction of the glass ribbon GR, and the radiant heat radiated from the discharge part 21 toward the glass ribbon GR. Shield at least part of it.
- the end of the second shielding part 790 on the downstream side in the transfer direction is arranged on the upper side in the vertical direction of the glass ribbon GR after being supplied onto the surface Ma of the molten metal M.
- the material of the second shielding part 790 is preferably, for example, graphite, ceramics, fiber board, etc., as in the first shielding part 90 in the modification of the first embodiment.
- at least a part of the radiant heat radiated from the discharge portion 21 toward the molten metal M and the glass ribbon GR can be shielded in both the supply step S11 and the transfer step S12.
- the second shielding part 790 can be arranged to be movable in the vertical direction.
- the second shielding part 790 may be movable between a position of the second shielding part 790 indicated by a solid line in FIG. 9 and a position indicated by a two-dot chain line.
- the position of the second shielding part 790 indicated by the solid line in FIG. 9 is in the vicinity of the discharge part 21.
- a position indicated by a two-dot chain line in FIG. 9 is lower than a position of the second shielding part 790 indicated by a solid line in FIG.
- the molding apparatus 701 can include a drive unit that moves the second shielding unit 790 in the vertical direction.
- the molding apparatus 701 does not have to include the second cooling units 33 and 34. Moreover, the shaping
- Other configurations and methods in the seventh embodiment are the same as those in the first embodiment.
- the second shielding part 790 that shields at least a part of the radiant heat radiated from the discharge part 21 toward the molten metal M and the glass ribbon GR is provided, it is melted by the heat of the discharge part 21. Heating of the metal M and the glass ribbon GR can be suppressed. Thereby, it can suppress that the temperature of the molten metal M rises. Therefore, the glass ribbon GR can be suitably cooled by the molten metal M. Moreover, it can suppress that the temperature of the glass ribbon GR supplied on the surface Ma of the molten metal M rises.
- the temperature of the glass ribbon GR after being supplied onto the surface Ma of the molten metal M is preferably easily made lower than the softening point, and the thickness of the glass ribbon GR changes on the surface Ma of the molten metal M. Can be suppressed.
- the second shielding part 790 can suppress heat exchange between the first area AR1 vertically above the second shielding part 790 and the second area AR2 vertically below the second shielding part 790. .
- the first area AR1 can be maintained at a relatively high temperature
- the second area AR2 can be maintained at a relatively low temperature.
- the glass ribbon GR discharged from the discharge portion 21 moves from the first region AR1 to the second region AR2 through the through hole 790a of the second shielding portion 790. Since the second region AR2 is kept at a lower temperature than the first region AR1, the glass ribbon GR moved to the second region AR2 is cooled. When the glass ribbon GR is cooled, the temperature of the glass ribbon GR decreases and the viscosity of the glass ribbon GR increases. Therefore, the glass ribbon GR is suppressed from being stretched by its own weight, and the thickness of the glass ribbon GR during the fall is hardly changed.
- the change in the thickness of the glass ribbon GR during the fall in the second region AR2 is greater than the change in the thickness of the glass ribbon GR in the fall during the position in the first region AR1. small. Therefore, the thickness of the glass ribbon GR that changes by its own weight while falling is adjusted by adjusting the ratio of the time that the glass ribbon GR is located in the first area AR1 and the time that the glass ribbon GR is located in the second area AR2. Can be adjusted. As the ratio of the time during which the glass ribbon GR is located in the first region AR1 is increased, the glass ribbon GR is easily stretched by its own weight, and the thickness of the glass ribbon GR is reduced. As the ratio of the time during which the glass ribbon GR is located in the second region AR2 is increased, the glass ribbon GR is less likely to be stretched by its own weight, and the thickness of the glass ribbon GR is increased.
- the second shielding part 790 is arranged to be movable in the vertical direction. Therefore, by moving the second shielding part 790 in the vertical direction by a driving unit (not shown), the ratio between the time when the glass ribbon GR is located in the first area AR1 and the time when the glass ribbon GR is located in the second area AR2 is set. Can be changed. Specifically, as the second shielding part 790 moves downward in the vertical direction, the ratio of the time during which the glass ribbon GR is positioned in the first area AR1 to the time during which the glass ribbon GR is positioned in the second area AR2 increases. . That is, for example, by moving the position of the second shielding part 790 from the position of the solid line shown in FIG.
- the ratio of the time during which the falling glass ribbon GR is in the first region AR1 is lengthened. be able to.
- the thickness of the glass ribbon GR can be made small.
- the 2nd shielding part 790 is arrange
- a part can be shielded. That is, the second shielding part 790 can also function as the first shielding part.
- the part located in the transport direction upstream of the glass ribbon GR in the second shielding part 790 and the part located in the transport direction downstream of the glass ribbon GR in the second shielding part 790 are independent of each other. It may be provided to be movable. In this case, a drive unit for moving each part is provided.
- the second shielding part 790 may have a configuration in which only a portion of the second shielding part 790 located on the upstream side in the transfer direction from the glass ribbon GR may be provided, or the glass shielding ribbon of the second shielding part 790. A configuration in which only a portion located downstream of the GR in the transfer direction may be provided.
- the second shielding part 790 includes at least a part of the radiant heat radiated from the discharge part 21 toward the molten metal M and at least a part of the radiant heat radiated from the discharge part 21 toward the glass ribbon GR.
- the structure which shields only any one of them may be sufficient.
- the shielding of the radiant heat using the 2nd shielding part 790 should just be performed in at least one of supply process S11 and transfer process S12. That is, radiant heat shielding using the second shielding part 790 may be performed only in either the supply step S11 or the transfer step S12.
- the second shielding part 790 may be arranged to be movable in a direction other than the vertical direction.
- the second shielding part 790 may be arranged to be movable in the transfer direction.
- the position of the through hole 790a in the transfer direction can be adjusted according to the position of the falling glass ribbon GR in the transfer direction.
- the dimension of the through hole 790a in the transfer direction can be easily reduced within a range in which the glass ribbon GR can pass, and the heat shielding effect by the second shielding part 790 can be improved.
- the 2nd shielding part 790 may be arrange
- the second cooling units 33 and 34 of the first embodiment may be provided. In this case, it is easier to adjust the temperature of the falling glass ribbon GR and to adjust the thickness of the glass ribbon GR.
- the 1st shielding part 90 in the modification of 1st Embodiment may be provided.
- the formation of the single-layer molten glass G has been described.
- the present invention is not limited to this, and for example, the formation of the multilayer molten glass G in which three layers of the molten glass G are stacked. It can also be applied.
- molded in each embodiment mentioned above is not specifically limited.
- Each embodiment mentioned above is applicable with respect to various glass, such as soda-lime glass and an alkali free glass.
- each structure mentioned above can be combined suitably in the range which is not mutually contradictory.
- the manufacturing method of the glass product of each embodiment of this invention can include forming process S21, slow cooling process S22, and cutting process S23, as shown in FIG.
- the forming step S21 is a step of forming the molten glass G into a molded body having a target shape by using any one of the forming apparatus and the forming method of the first to seventh embodiments.
- the slow cooling step S22 slowly cools the molded body molded by the molding step S21, that is, the glass ribbon GR molded by the molding apparatus and molding method according to any one of the first to seventh embodiments. It is a process.
- the cutting step S23 is a step of cutting the slowly cooled formed body into a necessary length.
- a glass product is manufactured by the above process.
- the manufacturing method of the glass product of embodiment of this invention shape
- the glass product is a glass melt or molded product in the middle of the slow cooling step S22, or a molded product after the slow cooling step S22 and after the cutting step S23, and a processed product such as a surface treatment or a film is pasted thereon. Can be included.
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Abstract
Description
本発明のガラス製品の製造方法の一つの態様は、上記の成形方法で成形されたガラスリボンを徐冷する徐冷工程を含む。
また、以下の説明においては、特に断りのない限り、幅方向とは、成形装置1の幅方向およびガラスリボンGRの幅方向を意味するものとし、移送方向とは、ガラスリボンGRの移送方向を意味するものとする。
図1に示す第1実施形態の成形装置1は、溶融ガラスGを成形する装置である。成形装置1は、バス10と、図示しないルーフと、供給装置20と、ドロスボックス11と、冷却装置30と、を備える。
バス10は、鉛直方向上側に開口する浴槽10aを有する。浴槽10aには、溶融金属Mが貯留される。溶融金属Mは、例えば、溶融スズ、溶融スズ合金等であることが好ましい。溶融金属Mの温度は、移送方向下流側に向かうに従って低くなることが好ましい。図示しないルーフは、バス10の上側を覆っている。バス10の鉛直方向上側には、ルーフによって囲まれた空間が設けられている。空間は、浴槽10a内の溶融金属Mが酸化することを抑制するために、還元性(非酸化性)ガスまたは不活性ガスで満たされることが好ましい。還元性ガスとしては、例えば、窒素と水素との混合ガスが挙げられる。
供給工程S11は、軟化点以上の温度の溶融ガラスGを帯状にして排出してガラスリボンGRにし、溶融金属Mの表面Ma上に供給する工程である。まず、供給装置20における図示しないガラス溶融炉において軟化点以上の温度の溶融ガラスGを製造する。第1実施形態では、供給工程S11における溶融ガラスGの温度は、溶融ガラスGの粘度η[dPa・s]が、1.5≦logη≦5の範囲内となる温度とすることが好ましい。そして、ガラス溶融炉で製造された溶融ガラスGを排出部21のスリット21aから排出して溶融ガラスGをガラスリボンGRにする。
以上の供給工程S11と移送工程S12とによって、溶融ガラスGを成形して、所望の厚みを有するガラスリボンGRを得ることができる。
比較例の溶融ガラスGの成形装置801は、図11に示すように、従来のフロート製法で使用される複数のトップロール880を備える。トップロール880は、浴槽10aの幅方向両側の壁部に対向配置されている。トップロール880は、ガラスリボンGRの幅方向の端部を支持するトップロール本体882と、トップロール本体882に連結された回転軸881と、で構成される。複数のトップロール880は、回転軸881が幅方向に延びているトップロール880と、回転軸881が幅方向に対して移送方向下流側に傾いて延びているトップロール880と、を含む。
この新たな着想によれば、ガラスリボンGRを溶融金属Mの表面Ma上で引き延ばすことなく、溶融ガラスGを成形することができる。具体的には、上述した第1実施形態のように、冷却装置30を用いて、帯状にした溶融ガラスGであるガラスリボンGRを、移送方向上流側の領域で、幅方向の全体においてガラスリボンGRの温度が軟化点よりも低くなるように冷却する。
以上により、第1実施形態によれば、成形装置1の構造を簡単にすることができ、容易に溶融ガラスGの成形精度を向上させることができる。
また、例えば、移送方向上流側の領域においてガラスリボンGRの温度を徐冷点以下にすると、過剰な温度変化によってガラスリボンGRが破損する場合がある。これに対して、第1実施形態によれば、冷却装置30を用いて、移送方向上流側の領域で、ガラスリボンGRの温度が幅方向の全体において軟化点よりも低く、かつ、徐冷点よりも高くなるようにガラスリボンGRを冷却できる。そのため、ガラスリボンGRの温度が過剰に変化することを抑制でき、ガラスリボンGRが破損することを抑制できる。
また、第1実施形態によれば、供給工程S11において、排出部21のスリット21aから溶融ガラスGを排出して溶融ガラスGを帯状にできる。そのため、溶融ガラスGをガラスリボンGRにすることが容易である。
また、例えば、排出部21の内壁と接触している溶融ガラスGの温度が、ある特定の温度に維持されると、溶融ガラスGの一部が結晶化して失透が生じる場合がある。失透が生じると結晶化した溶融ガラスGが排出部21の内壁に付着して、排出部21から排出されるガラスリボンGRの形状の平坦性を悪くする場合がある。
第1実施形態の変形例において成形装置は、上述した第1実施形態の成形装置1において、図1および図2に二点鎖線で示す第1遮蔽部90をさらに備えることができる。第1遮蔽部90は、矩形板状である。第1遮蔽部90の平面視形状は、図2に示すように、幅方向に長い長方形状である。第1遮蔽部90の移送方向上流側の端部は、浴槽10aの移送方向上流側の内壁に接続されている。第1遮蔽部90の幅方向両側の端部は、浴槽10aの幅方向両側の内壁に接続されている。図1に示すように、第1遮蔽部90は、溶融金属Mの表面MaのうちガラスリボンGRが供給される部分よりも移送方向上流側の部分を覆っている。すなわち、第1遮蔽部90は、溶融金属Mが貯留されるよりも鉛直方向上側に位置する部分において、浴槽10aの内壁に固定されている。第1遮蔽部90は、排出部21と溶融金属Mとの鉛直方向の間に配置されている。
第1実施形態の変形例によれば、供給工程S11において、第1遮蔽部90を用いて、ガラスリボンGRから溶融金属Mに向けて輻射される輻射熱の少なくとも一部を遮蔽できる。これにより、ガラスリボンGRの温度が低下して軟化点より低くなることを抑制できる。したがって、供給工程S11において落下させる等によってガラスリボンGRの厚みを調整でき、ガラスリボンGRの厚みをより所望の厚みにしやすい。
また、第1遮蔽部90を用いて、排出部21とその周辺からガラスリボンGRから溶融金属Mに向けて輻射される輻射熱の少なくとも一部を遮蔽できるため、溶融金属Mの温度が上昇することを抑制できる。これにより、溶融金属MによってガラスリボンGRを好適に冷却できる。
なお、第1遮蔽部90は、排出部21から溶融金属Mに向けて輻射される輻射熱の少なくとも一部を遮蔽できるため、後述する第2遮蔽部としても機能する。
第2実施形態は、第1実施形態に対して、供給装置の構成が異なる。図4に示す第2実施形態の供給装置120の排出部121は、幅方向に延びた柱状の部材とすることができる。排出部121は、上部121aと、下部121bと、を有することが好ましい。
上部121aは、幅方向に延びた矩形柱状である。上部121aの上面には、鉛直方向下側に窪む凹部121cが形成されている。凹部121c内には溶融ガラスGが供給される。下部121bは、上部121aの鉛直方向下側に接続されている。下部121bは、幅方向に延びた三角柱状である。下部121bは、鉛直方向下側に向かって鋭角に凸となっている。
第2実施形態によれば、第1実施形態と同様に、成形装置の構造を簡単にすることができ、容易に溶融ガラスGの成形精度を向上させることができる。
第3実施形態は、第1実施形態に対して、供給装置の構成が異なる。図5に示す第3実施形態の供給装置220の排出部221は、幅方向に延びた柱状の部材とすることができる。排出部221の幅方向と直交する断面形状は、略台形状である。排出部221の上面には、鉛直方向下側に窪む凹部221bが形成されている。凹部221b内には溶融ガラスGが供給される。凹部221bの移送方向上流側の壁部は、凹部221bの移送方向下流側の壁部よりも鉛直方向上側に延びている。
第3実施形態によれば、第1実施形態と同様に、成形装置の構造を簡単にすることができ、容易に溶融ガラスGの成形精度を向上させることができる。
第4実施形態は、第1実施形態に対して、供給装置の構成が異なる。第4実施形態の供給装置320の排出部321は、図6に示すように、リップ321aと、ツイール321bと、を有することができる。リップ321aは、移送方向上流側から移送方向下流側に向かうに従って鉛直方向下側に位置する向きに傾いた方向に延びている。リップ321aの上面は、鉛直方向上側を向き移送方向上流側から移送方向下流側に向かうに従って鉛直方向下側に位置する傾斜面である。ツイール321bは、リップ321aの鉛直方向上側に隙間を空けて配置され、鉛直方向に延びている。ツイール321bは、鉛直方向に移動可能である。
第4実施形態によれば、ツイール321bを鉛直方向に移動させることによって、リップ321aとツイール321bとの隙間を調整できる。そのため、リップ321aとツイール321bとの隙間から排出されるガラスリボンGRの厚みを容易に調整できる。
第5実施形態は、第1実施形態に対して、供給装置および調整装置の構成が異なる。第5実施形態の供給装置420の排出部421は、図7に示すように、筒部421aと、可動部421bと、を有することができる。筒部421aは、移送方向上流側から移送方向下流側に向かうに従って鉛直方向下側に位置する向きに傾いた方向に延びた筒状である。筒部421aの先端は開口している。溶融ガラスGは、筒部421aの内壁面のうち鉛直方向下側の内壁面を伝うことでガラスリボンGRとなる。筒部421aの内壁面のうち鉛直方向下側の内壁面は、鉛直方向上側を向き移送方向上流側から移送方向下流側に向かうに従って鉛直方向下側に位置する傾斜面である。
また、第5実施形態によれば、調整装置460が、昇降装置461と可動部421bとの2つの調整機構を有しているため、排出部421と溶融金属Mの表面Maとの鉛直方向の距離を調整しやすい。これにより、ガラスリボンGRの厚みをより調整しやすい。
なお、第5実施形態の調整装置460は、昇降装置461と可動部421bとのうちのいずれか一方のみを有していてもよい。
第6実施形態は、第1実施形態に対して、加熱部641,642が設けられている点が異なる。第6実施形態の成形装置601は、図8に示すように、加熱部641,642を備えることができる。加熱部641,642は、供給工程S11において、排出部21を加熱する。より詳細には、加熱部641,642は、排出部21の先端部を加熱する。加熱部641は、排出部21の鉛直方向下側の部分を加熱する。加熱部642は、排出部21の鉛直方向上側の部分を加熱する。加熱部641,642の構成は、排出部21を加熱できるならば、特に限定されない。
成形装置601は、第1実施形態の変形例における第1遮蔽部90を備えていない。第6実施形態におけるその他の構成および方法は、第1実施形態と同様である。
第7実施形態は、第1実施形態に対して、第2遮蔽部790が設けられている点が異なる。第7実施形態の成形装置701は、図9に示すように、第2遮蔽部790を備えることができる。第2遮蔽部790は、矩形板状である。第2遮蔽部790は、移送方向上流側から移送方向下流側に向かうに従って鉛直方向上側に位置する向きに傾いた方向に延びている。第2遮蔽部790は、溶融金属Mよりも鉛直方向上側で、かつ、排出部21よりも鉛直方向下側に配置されている。
成形装置701は、第1実施形態と異なり、第2冷却部33,34を備えなくてよい。また、成形装置701は、第1実施形態の変形例の第1遮蔽部90を備えなくてよい。第7実施形態におけるその他の構成および方法は、第1実施形態と同様である。
また、上述した各実施形態において成形される溶融ガラスGの種類は特に限定されない。上述した各実施形態は、ソーダライムガラス、無アルカリガラス等、種々のガラスに対して適用可能である。
また、上述した各構成は、相互に矛盾しない範囲内で適宜組み合わせることができる。
本発明の各実施形態のガラス製品の製造方法は、図10に示すように、成形工程S21と、徐冷工程S22と、切断工程S23と、を含むことができる。
まず、成形工程S21は、第1実施形態から第7実施形態のいずれか一つの成形装置および成形方法によって溶融ガラスGを目的の形状の成形体に成形する工程である。
次に、徐冷工程S22は、成形工程S21によって成形された成形体、すなわち第1実施形態から第7実施形態のいずれか一つの成形装置および成形方法で成形されたガラスリボンGRを徐冷する工程である。
次に、切断工程S23は、徐冷された成形体を必要な長さに切断する工程である。
以上の工程により、ガラス製品が製造される。
なお、必要に応じて、切断工程S23の後に、切断された後の成形体を研磨する研磨工程を設けてもよい。また、ガラス製品は、徐冷工程S22の途中のガラス溶融物もしくは成形体、または徐冷工程S22の後および切断工程S23の後の成形体に、表面処理等の加工をしたものやフィルムを貼ったものを含むことができる。
Claims (26)
- 軟化点以上の温度の溶融ガラスを帯状に排出してガラスリボンとし、溶融金属の表面上に供給する供給工程と、
前記溶融金属の表面上に供給された前記ガラスリボンを移送する移送工程と、
を含み、
前記移送工程は、移送される前記ガラスリボンを、移送方向上流側の領域で、前記ガラスリボンの温度が幅方向の全体において軟化点よりも低くなるように冷却する冷却工程を含む溶融ガラスの成形方法。 - 前記冷却工程において、前記ガラスリボンの温度が幅方向の全体において徐冷点よりも高くなるように前記ガラスリボンを冷却する請求項1に記載の成形方法。
- 前記ガラスリボンが供給される箇所における前記溶融金属の温度は、前記溶融ガラスの軟化点よりも低く、かつ、前記溶融ガラスの徐冷点よりも高く、
前記冷却工程において、前記溶融金属によって前記ガラスリボンを冷却する請求項1または2に記載の成形方法。 - 前記ガラスリボンが供給される箇所における前記溶融金属の温度は、900℃以下である請求項3に記載の成形方法。
- 前記供給工程において、前記ガラスリボンから前記溶融金属に向けて輻射される輻射熱の少なくとも一部を遮蔽する請求項1~4のいずれか一項に記載の成形方法。
- 前記供給工程と前記移送工程との少なくとも一方において、前記溶融ガラスを排出する排出部から前記溶融金属および前記ガラスリボンに向けて輻射される輻射熱の少なくとも一部を遮蔽する請求項1~5のいずれか一項に記載の成形方法。
- 前記冷却工程において、前記ガラスリボンを前記溶融金属側と逆側から冷却する請求項1~6のいずれか一項に記載の成形方法。
- 前記供給工程において、前記ガラスリボンを鉛直方向下方に落下させて前記溶融金属の表面上に供給する請求項1~7のいずれか一項に記載の成形方法。
- 前記供給工程における前記ガラスリボンの粘度η[dPa・s]は、1.5≦logη≦5の範囲内である請求項8に記載の成形方法。
- 前記供給工程において、前記ガラスリボンを落下させる間に、前記ガラスリボンを冷却する請求項8または9に記載の成形方法。
- 前記移送工程において、前記ガラスリボンを引張しない請求項1~10のいずれか一項に記載の成形方法。
- 前記供給工程において、前記溶融ガラスを排出する排出部のスリットから前記溶融ガラスを排出して前記溶融ガラスをガラスリボンにする請求項1~11のいずれか一項に記載の成形方法。
- 前記溶融ガラスを排出する排出部は、前記移送方向上流側から移送方向下流側に向かうに従って鉛直方向下側に位置する傾斜面を有し、
前記供給工程において、前記傾斜面に沿って前記溶融ガラスを伝わらせて前記溶融ガラスをガラスリボンにする請求項1~11のいずれか一項に記載の成形方法。 - 前記溶融ガラスを排出する排出部は、前記溶融ガラスが伝う第1表面および第2表面を有し、前記第1表面の下端と前記第2表面の下端とは、互いに接続され、
前記供給工程において、前記第1表面に沿って帯状にされたガラスリボンと前記第2表面に沿って帯状にされたガラスリボンとを重ね合わせて前記溶融金属の表面上に供給する請求項1~11のいずれか一項に記載の成形方法。 - 溶融金属が貯留される浴槽と、
温度が軟化点以上で帯状の溶融ガラスを排出する排出部を有し、前記排出部から前記溶融ガラスを排出して前記溶融金属の表面上にガラスリボンを供給する供給装置と、
前記溶融金属の表面上に供給された前記ガラスリボンを移送する移送装置と、
移送される前記ガラスリボンを、移送方向上流側の領域において冷却する冷却装置と、
を備え、
前記冷却装置は、前記ガラスリボンの温度が幅方向の全体において軟化点よりも低くなるように前記ガラスリボンを冷却する溶融ガラスの成形装置。 - 前記冷却装置は、前記ガラスリボンが供給される箇所における前記溶融金属の温度を前記溶融ガラスの軟化点よりも低く、かつ、前記溶融ガラスの徐冷点よりも高くする温度調整部を有する請求項15に記載の成形装置。
- 前記冷却装置は、前記ガラスリボンが供給される箇所における前記溶融金属の温度を900℃以下にする温度調整部を有する請求項16に記載の成形装置。
- 前記溶融金属の表面のうち前記ガラスリボンが供給される部分よりも移送方向上流側の部分を覆い、前記ガラスリボンから前記溶融金属に向けて輻射される輻射熱の少なくとも一部を遮蔽する第1遮蔽部をさらに備える請求項15~17のいずれか一項に記載の成形装置。
- 前記排出部から前記溶融金属および前記ガラスリボンに向けて輻射される輻射熱の少なくとも一部を遮蔽する第2遮蔽部をさらに備える請求項15~18のいずれか一項に記載の成形装置。
- 前記冷却装置は、前記ガラスリボンを前記溶融金属側と逆側から冷却する第1冷却部を有する請求項15~19のいずれか一項に記載の成形装置。
- 前記排出部は、前記溶融金属の表面の鉛直方向上側に配置されている請求項15~20のいずれか一項に記載の成形装置。
- 前記排出部と前記溶融金属の表面との鉛直方向の距離を調整可能な調整装置をさらに備える請求項21に記載の成形装置。
- 前記調整装置は、前記供給装置を昇降させる昇降装置を有する請求項22に記載の成形装置。
- 前記ガラスリボンが前記排出部から排出されてから前記溶融金属の表面上に供給されるまでの間に、前記ガラスリボンを冷却する第2冷却部をさらに備える請求項15から23のいずれか一項に記載の成形装置。
- 前記排出部を加熱する加熱部をさらに備える請求項15~24のいずれか一項に記載の成形装置。
- 請求項1~14のいずれか一項に記載の成形方法で成形されたガラスリボンを徐冷する徐冷工程を含むガラス製品の製造方法。
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JP2018568576A JP7160691B2 (ja) | 2017-02-15 | 2018-02-14 | 溶融ガラスの成形方法、成形装置、およびガラス製品の製造方法 |
KR1020197022547A KR102487675B1 (ko) | 2017-02-15 | 2018-02-14 | 용융 유리의 성형 방법, 성형 장치, 및 유리 제품의 제조 방법 |
EP18754203.0A EP3584223B1 (en) | 2017-02-15 | 2018-02-14 | Method for forming molten glass, forming apparatus, and method for producing glass product |
CN201880011984.XA CN110312686B (zh) | 2017-02-15 | 2018-02-14 | 熔融玻璃的成形方法、成形装置和玻璃制品的制造方法 |
US16/529,306 US20190352209A1 (en) | 2017-02-15 | 2019-08-01 | Method for forming molten glass, forming apparatus, and method for producing glass product |
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JP7498893B2 (ja) | 2020-10-30 | 2024-06-13 | 日本電気硝子株式会社 | ガラス物品の製造方法及び製造装置 |
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DE102017124625A1 (de) | 2016-12-22 | 2018-06-28 | Schott Ag | Dünnglassubstrat, Verfahren und Vorrichtung zu dessen Herstellung |
KR20210042899A (ko) * | 2018-08-13 | 2021-04-20 | 에이지씨 가부시키가이샤 | 판유리의 제조 장치, 및 판유리의 제조 장치에 사용되는 성형 부재 |
JPWO2021124892A1 (ja) * | 2019-12-19 | 2021-06-24 | ||
WO2022157340A1 (en) * | 2021-01-21 | 2022-07-28 | Tobii Ab | Improvements relating to lenses |
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2018
- 2018-02-14 CN CN201880011984.XA patent/CN110312686B/zh active Active
- 2018-02-14 TW TW107105618A patent/TWI758416B/zh active
- 2018-02-14 JP JP2018568576A patent/JP7160691B2/ja active Active
- 2018-02-14 EP EP18754203.0A patent/EP3584223B1/en active Active
- 2018-02-14 KR KR1020197022547A patent/KR102487675B1/ko active IP Right Grant
- 2018-02-14 WO PCT/JP2018/005120 patent/WO2018151166A1/ja unknown
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JPS55136140A (en) | 1979-04-05 | 1980-10-23 | Corning Glass Works | Plate glass manufacturing method and apparatus |
JP2014525391A (ja) * | 2011-08-29 | 2014-09-29 | コーニング インコーポレイテッド | ガラスシートを成形する装置および方法 |
WO2014009766A2 (en) | 2012-07-13 | 2014-01-16 | Corning Incorporated | Methods and apparatuses for producing laminated glass sheets |
JP2017026061A (ja) | 2015-07-23 | 2017-02-02 | 株式会社ジェイテクト | 車輪用軸受装置、車輪用軸受装置の加工方法および車輪用軸受装置の組立て方法 |
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CN110312686B (zh) | 2023-04-28 |
KR20190112275A (ko) | 2019-10-04 |
TW201834980A (zh) | 2018-10-01 |
KR102487675B1 (ko) | 2023-01-11 |
EP3584223B1 (en) | 2024-10-09 |
EP3584223A4 (en) | 2020-12-02 |
JPWO2018151166A1 (ja) | 2019-12-12 |
US20190352209A1 (en) | 2019-11-21 |
TWI758416B (zh) | 2022-03-21 |
CN110312686A (zh) | 2019-10-08 |
JP2022075883A (ja) | 2022-05-18 |
EP3584223A1 (en) | 2019-12-25 |
JP7160691B2 (ja) | 2022-10-25 |
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