CN219342012U - Apparatus for manufacturing glass plate - Google Patents
Apparatus for manufacturing glass plate Download PDFInfo
- Publication number
- CN219342012U CN219342012U CN202190000705.7U CN202190000705U CN219342012U CN 219342012 U CN219342012 U CN 219342012U CN 202190000705 U CN202190000705 U CN 202190000705U CN 219342012 U CN219342012 U CN 219342012U
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- Prior art keywords
- tube
- glass
- fining
- molten glass
- pipe
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/20—Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
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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
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
Abstract
A glass plate manufacturing device (1) is provided with: a melting furnace (2) for heating a glass raw material to generate molten glass (Gm); a noble metal fining tube (5) for fining molten glass (Gm) produced in the melting furnace (2); and a forming mechanism (4) for forming a glass ribbon (Gr) by using the molten glass (Gm) subjected to the clarification treatment, wherein the clarification pipe (5) is inclined in a manner of increasing the position towards the downstream side, and the inclination angle (alpha) of the clarification pipe (5) relative to the horizontal axis is 0.25-5 degrees.
Description
Technical Field
The present utility model relates to a glass sheet manufacturing apparatus, and more particularly, to a glass sheet manufacturing apparatus including a step of performing a refining process on molten glass in a refining tube.
Background
As is well known, glass sheets are used as glass substrates and cover glasses for displays (liquid crystal displays, plasma displays, organic EL displays, and the like) and organic EL lighting, for example.
Such a glass sheet is generally produced through a melting step of producing molten glass, a fining step of fining the produced molten glass, a homogenizing step of stirring the molten glass after fining, a forming step of forming a glass ribbon using the molten glass after the homogenizing step, and the like.
A specific structure of an apparatus for manufacturing such a glass sheet is disclosed in patent document 1, for example. The apparatus includes, in order from the upstream side, a melting furnace for performing a melting process, a cleaning pipe (a cleaning tank) for cleaning noble metals such as platinum and platinum alloy, a plurality of (2 in this document) stirring tanks for performing a homogenization process, a forming mechanism for performing a forming process, and the like.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open publication No. 2014-19629
Disclosure of Invention
Problems to be solved by the utility model
The cleaning pipe disclosed in patent document 1 is inclined so that its position increases toward the downstream side (see fig. 1 of the document). As a result of intensive studies, the present inventors have found that, even if the settling tube is inclined in this manner, if the inclination is not appropriate, the following problems occur.
Further, as in patent document 1, if the inclination angle of the fining tube with respect to the horizontal axis is large, the inner pressure of the fining tube, particularly in the vicinity of the inflow port, becomes large, and damage and breakage may occur in the fining tube. On the other hand, when the fining tube is made horizontal to the horizontal axis, that is, when the fining tube is made horizontal, bubbles generated in the molten glass in the fining tube stagnate, and the inner surface of the fining tube may oxidize by the stagnated bubbles to generate a large amount of noble metal foreign matters (platinum matters, etc.).
From the above viewpoints, the present utility model aims to achieve both prevention of stagnation of bubbles in a cleaning pipe and prevention of increase in internal pressure of the cleaning pipe by properly tilting the cleaning pipe.
Means for solving the problems
A first aspect of the present utility model, which has been made based on the above-described findings of the present inventors, is a method for manufacturing a glass plate, comprising: a melting step of heating a glass raw material to produce molten glass; a fining step of applying fining treatment to the molten glass produced in the melting step by supplying the molten glass to a fining tube made of a noble metal; and a forming step of forming a glass ribbon using the molten glass having undergone the fining step, wherein the fining tube is inclined so as to be positioned higher toward the downstream side, and the angle of inclination of the fining tube with respect to the horizontal axis is 0.25 to 5 °.
According to this configuration, not only the cleaning tube is inclined so as to be positioned higher toward the downstream side, but also the inclination angle of the cleaning tube with respect to the horizontal axis is 0.25 to 5 °, and the following advantages are obtained. That is, when the inclination angle of the finer tube is 0.25 ° or more, bubbles generated in the molten glass in the finer tube smoothly move toward the downstream side. Thus, bubbles in an amount which is difficult to allow remain in the clarifying pipe can be avoided. In contrast, when the inclination angle of the cleaning pipe is smaller than 0.25 °, bubbles stagnate in the cleaning pipe, and the inner surface of the cleaning pipe is oxidized by the stagnated bubbles, and a large amount of noble metal foreign matter (platinum or the like) is generated. Thus, the quality of the manufactured glass sheet is lowered and the yield of the product is lowered. In the present utility model, the bubbles are prevented from stagnating in the clarifier, and thus such a problem is unlikely to occur. In the present utility model, since the inclination angle of the cleaning pipe is 5 ° or less, the internal pressure of the cleaning pipe, particularly in the vicinity of the inlet port, is not increased, and damage or breakage of the cleaning pipe is less likely to occur. This improves the durability of the cleaning tube. On the other hand, when the inclination angle of the cleaning pipe exceeds 5 °, the internal pressure of the cleaning pipe, particularly in the vicinity of the inlet, increases, and damage and breakage easily occur in the cleaning pipe. Based on the above, according to the present utility model, both prevention of stagnation of bubbles in the cleaning pipe and prevention of increase in the internal pressure of the cleaning pipe can be achieved. Considering such a circumstance, the lower limit value of the inclination angle of the cleaning pipe is more preferably 0.5 °. The upper limit value is more preferably 2 °.
In this configuration, exhaust portions for exhausting bubbles generated in the molten glass may be provided at a plurality of positions in the direction from the upstream side toward the downstream side of the cleaning pipe.
In this way, bubbles can be reliably discharged from the inside of the settling tube. That is, when the bubbles are to be discharged from one of the exhaust portions in the case where the amount of bubbles in the cleaning tube is excessive, the bubbles continuously or intermittently reach the exhaust portion, and there is a possibility that the inner surface of the cleaning tube around the exhaust portion is continuously or intermittently exposed to the gas and oxidized. If a plurality of air discharge units are provided, the amount of bubbles discharged from one air discharge unit decreases, and thus the bubbles intermittently reach the air discharge unit. Therefore, the time for which the inner surface of the fining tube around the exhaust portion is exposed to the gas can be reduced, and the concern of oxidation can be eliminated.
Instead of this configuration, the fining tube may be divided into a plurality of divided regions in a direction from the upstream side toward the downstream side, and an exhaust portion for exhausting bubbles generated in the molten glass may be provided in each divided region. Here, the divided region refers to a region divided for example for separately performing temperature adjustment (electric heating or the like).
In this way, the generated bubbles can be discharged in each divided region, and thus the amount of bubbles discharged from one exhaust portion is appropriate. Therefore, the time for which the inner surface of the fining tube around the exhaust portion is exposed to the gas can be reduced more reliably, and the concern of oxidation can be eliminated more reliably.
A second aspect of the present utility model, which has been made based on the above-described findings of the present inventors, is an apparatus for manufacturing a glass sheet, comprising: a melting furnace for heating a glass raw material to generate molten glass; a precious metal refining pipe for burying a refining place of molten glass generated in the melting furnace; and a forming mechanism for forming a glass ribbon by using the molten glass subjected to the fining treatment, wherein the fining tube is inclined so as to be positioned higher toward the downstream side, and the angle of inclination of the fining tube with respect to the horizontal axis is 0.25 to 5 °.
According to the manufacturing apparatus, the same operational effects as those of the above-described manufacturing method having substantially the same structure as the manufacturing apparatus can be obtained.
Effects of the utility model
According to the present utility model, the inclined form of the cleaning pipe is rationalized, and both prevention of stagnation of bubbles generated in molten glass in the cleaning pipe and prevention of increase of the internal pressure of the cleaning pipe are achieved.
Drawings
Fig. 1 is a schematic front view showing the overall configuration of a glass plate manufacturing apparatus according to an embodiment of the present utility model.
Fig. 2 is a flowchart for explaining a method of manufacturing a glass plate according to an embodiment of the present utility model.
Fig. 3 is a front view in longitudinal section showing a main component of the method for manufacturing a glass plate and the apparatus for manufacturing the same according to the first embodiment of the present utility model, namely, a finer tube.
Fig. 4 is a longitudinal sectional side view cut according to line A-A of fig. 3.
Fig. 5 is a front view in longitudinal section showing a main component of a method for producing a glass plate and a device for producing the same according to a second embodiment of the present utility model, namely, a finer tube.
Fig. 6 is a front view in longitudinal section showing a main component of a method for producing a glass plate and a device for producing the same according to a third embodiment of the present utility model, namely, a finer tube.
Detailed Description
Hereinafter, a method and an apparatus for manufacturing a glass sheet according to an embodiment of the present utility model will be described with reference to the drawings.
Fig. 1 illustrates a manufacturing apparatus for carrying out the method for manufacturing a glass plate of the present utility model. As shown in the figure, the manufacturing apparatus 1 includes: a melting furnace 2 provided at an upstream end and heating a glass raw material to generate molten glass Gm; a transfer device 3 that transfers the molten glass Gm flowing out from the melting furnace 2 toward the downstream side; and a forming mechanism 4 for forming the glass ribbon Gr using the molten glass Gm supplied from the transfer device 3.
The transfer device 3 includes a clarifying pipe (clarifying tank) 5, a stirring tank (stirring tank) 6, and a state adjusting tank (state adjusting tank) 7 in this order from the upstream side. The inflow port 5a of the cleaning tube 5 communicates with the outflow port 2b of the melting furnace 2 via a first connecting pipe 8. The outflow port 5b of the cleaning tube 5 communicates with the inflow port 6a of the stirring vessel 6 via the second connection tube 9. The outflow port 6b of the agitation vessel 6 communicates with the inflow port 7a of the state adjustment vessel 7 via a cooling pipe 10.
The finer tube 5 performs a fining process on the molten glass Gm produced in the melting furnace 2. The stirring tank 6 stirs the molten glass Gm subjected to the clarification treatment to perform the homogenization treatment. The state adjustment tank 7 adjusts the viscosity and flow rate of the homogenized molten glass Gm. The agitation tanks 6 may be provided in plural in parallel in a direction from the upstream side toward the downstream side of the transfer device 3 (hereinafter referred to as a transfer direction).
The forming mechanism 4 includes a forming body 11 that forms a molten glass Gm into a ribbon shape by a overflow down-draw method, and a large diameter inlet pipe 12 that guides the molten glass Gm to the forming body 11. The molten glass Gm is supplied from the state adjustment tank 7 of the transfer device 3 to the introduction pipe 12 through the small-diameter pipe 13.
Next, a method for manufacturing a glass plate using the manufacturing apparatus 1 having the above-described structure will be described. As shown in fig. 2, the glass sheet manufacturing method generally includes a melting step S1, a fining step S2, and a forming step S3.
The melting step S1 is a step of heating a glass raw material in a melting furnace 2 to generate molten glass Gm. The fining step S2 is a step of supplying the molten glass Gm produced in the melting step S1 to the fining tube 5 to perform fining treatment. The forming step S3 is a step of forming the glass ribbon Gr using the molten glass Gm subjected to the fining step.
As a feature of the glass sheet manufacturing apparatus 1 having the above-described structure and the manufacturing method thereof, as shown in fig. 1, the fining tube 5 is inclined so as to be positioned higher toward the downstream side, and the angle α of inclination of the fining tube 5 with respect to the horizontal axis is 0.25 ° to 5 °. The angle of inclination α of the clarifying pipe 5 is smaller than the angle of inclination β of the first connecting pipe 8 with respect to the horizontal axis. The finer tube 5 is made of a noble metal such as platinum or a platinum alloy. The first connection pipe 8, the second connection pipe 9, the stirring vessel 6, the cooling pipe 10, the state adjustment vessel 7, the small diameter pipe 13, and the introduction pipe 12 are also made of a noble metal such as platinum or a platinum alloy.
First embodiment
Fig. 3 is a front view showing a longitudinal section of a fining tube 5, which is a main component of a glass sheet manufacturing apparatus 1 and a manufacturing method thereof according to a first embodiment of the present utility model, and fig. 4 is a side view showing a longitudinal section of the fining tube, which is cut along the line A-A in fig. 3. As shown in fig. 3, the cleaning tube 5 includes a cylindrical portion 5p inclined at the above-described angle α, a pair of flange portions 5f formed at both ends of the cylindrical portion 5p in the transfer direction, and electrode portions 5e integrally formed on outer peripheral portions (upper portions in the present embodiment) of the pair of flange portions 5f, respectively. The cleaning tube 5 is electrically heated by applying a voltage to the electrode portion 5e. Then, by changing the voltage applied to the electrode portion 5e, the temperature of the molten glass Gm in the cleaning tube 5 is adjusted. A gas phase space is not formed in the fining tube 5 but is filled with the molten glass Gm. The molten glass Gm in the finer tube 5 is heated to 1450 to 1650 ℃. The molten glass Gm contains bubbles Bu, and an exhaust portion 14 for exhausting the bubbles Bu is provided at an upper portion of a downstream end of the fining pipe 5.
In addition, partition plates 15 are disposed at a plurality of positions (four positions in the drawing) in the transfer direction in the clarification pipe 5. As shown in fig. 4, the partition plate 15 is an annular member fixed to the inner surface 5i of the cylindrical portion 5p, and a missing portion 15x is provided on the annular member 15. The bubbles Bu in the molten glass Gm in the finer tube 5 move downstream through the missing portion 15x, and are then discharged from the exhaust portion 14.
Specifically, since the inclination angle α of the fining tube 5 is 0.25 ° or more, bubbles Bu generated and floating in the molten glass Gm in the fining tube 5 do not stagnate, but smoothly move toward the downstream side while contacting the upper portion of the inner surface 5i of the cylindrical portion 5p as indicated by an arrow in fig. 3. For example, in the case where the inclination angle α is 0.25 °, the bubble Bu moves at 0.1m/h, in the case where the inclination angle α is 0.5 °, the bubble Bu moves at 0.4m/h, and in the case where the inclination angle α is 1 °, the bubble Bu moves at 1.5 m/h. All or substantially all of the moved bubble Bu is discharged from the gas discharge portion 14 as indicated by an arrow a in the figure. Thus, the bubbles Bu stagnate in the fining tube 5, and the occurrence of gas accumulation can be avoided. On the other hand, when the inclination angle α of the cleaning tube 5 is smaller than 0.25 °, the movement speed of the bubble Bu is insufficient, and the bubble Bu stagnates in the cleaning tube 5. For example, in the case where the inclination angle α is 0 °, the bubbles Bu remain at substantially the same position and stagnate, and thus the moving speed of the bubbles is about 0m/h. The gas formed by the stagnant bubbles Bu accumulates, and the upper part of the inner surface 5i of the cylindrical portion 5p oxidizes, thereby generating a large amount of noble metal foreign matter (platinum or the like). Thus, the quality of the manufactured glass sheet is lowered and the yield of the product is lowered. In the fining tube 5 of the present embodiment, bubbles Bu stagnate and thus such a problem is unlikely to occur.
Further, since the inclination angle α of the fining tube 5 in the present embodiment is 5 ° or less, the inner pressure of the fining tube 5, particularly in the vicinity of the inflow port 5a, is not increased, and damage or breakage of the fining tube 5 is less likely to occur. This improves the durability of the cleaning tube 5. On the other hand, when the inclination angle α of the cleaning pipe exceeds 5 °, the internal pressure of the cleaning pipe 5, particularly in the vicinity of the inlet 5a increases, and the cleaning pipe 5 is easily damaged or broken.
Based on the above, according to the glass plate manufacturing apparatus 1 and the manufacturing method thereof of the present embodiment, both prevention of stagnation of the bubble Bu in the cleaning tube 5 and prevention of increase of the internal pressure of the cleaning tube 5 can be achieved. Considering such a circumstance, the lower limit value of the inclination angle α of the cleaning tube 5 is more preferably 0.5 °. The upper limit value is more preferably 2 °.
Second embodiment
Fig. 5 is a front view in longitudinal section showing a fining tube 5, which is a main component of a glass sheet manufacturing apparatus 1 and a manufacturing method thereof according to a second embodiment of the present utility model. The fining tube 5 in this second embodiment is different from the fining tube 5 in the first embodiment described above in that the exhaust portion 14 is provided at a plurality of positions (two positions in the drawing) in the transfer direction of the fining tube 5. One of the plurality of exhaust units 14 is provided at the downstream end of the cleaning tube 5, and one exhaust unit 14 is provided at the downstream end.
When the amount of the bubble Bu is excessive, the bubble Bu continuously or intermittently reaches the exhaust part 14 when it is to be exhausted from one exhaust part 14 as shown in fig. 3, and the inner surface of the fining tube 5 around the exhaust part 14 may be continuously or intermittently exposed to the gas and oxidized. Even when the amount of the bubble Bu is excessive in this way, if a plurality of the exhaust parts 14 are provided as in the second embodiment of fig. 5, the amount of the bubble Bu discharged from one exhaust part 14 decreases, and therefore the bubble Bu intermittently reaches the exhaust part 14. Therefore, the time for which the inner surface of the fining tube 5 around the exhaust portion 14 is exposed to the gas can be reduced, and the concern of oxidation can be eliminated. Other structures and operational effects are the same as those of the first embodiment described above, and therefore, constituent elements common to the two embodiments are denoted by the same reference numerals in fig. 5, and the description thereof is omitted.
Third embodiment
Fig. 6 is a front view in longitudinal section showing a fining tube 5, which is a main component of a glass sheet manufacturing apparatus 1 and a manufacturing method thereof according to a third embodiment of the present utility model. The fining tube 5 according to the third embodiment is different from the fining tube 5 according to the second embodiment in that the fining tube 5 is composed of a first tube body 5B1 on the upstream side and a second tube body 5B2 on the downstream side. The first tube body 5B1 includes first cylindrical portions 5p1, a pair of first flange portions 5f1 formed at both ends of the first cylindrical portions 5p1 in the transfer direction, and a pair of first electrode portions 5e1 integrally formed on upper portions of the flange portions 5f 1. The second tube body 5B2 includes a second cylindrical portion 5p2, a pair of second flange portions 5f2 formed at both ends of the second cylindrical portion 5p2 in the transfer direction, and a pair of second electrode portions 5e2 integrally formed on upper portions of the pair of second flange portions 5f 2. The annular insulating member 16 is interposed between the first flange portion 5f1 and the second flange portion 5f2 adjacent to each other in the transfer direction. Although not shown, an annular insulating member is interposed between the first flange 5f1 at the upstream end of the first pipe body 5B1 and the flange 8f at the downstream end of the first connecting pipe 8, and between the second flange 5f2 at the downstream end of the second pipe body 5B2 and the flange 9f at the upstream end of the second connecting pipe 9. Further, exhaust portions 14 are provided at the downstream end of the first cylindrical portion 5p1 and the downstream end of the second cylindrical portion 5p2, respectively. Thus, in the third embodiment, the cleaning tube 5 is divided into a first divided region 5B1 as a first tube body and a second divided region 5B2 as a second tube body, the electric heating is performed in accordance with those regions 5B1, 5B2, and bubbles Bu in the molten glass Gm are discharged from the respective exhaust portions 14 in accordance with those regions 5B1, 5B 2. Other structures and operational effects are the same as those of the second embodiment described above, and therefore, constituent elements common to the two embodiments are denoted by the same reference numerals in fig. 6, and the description thereof is omitted. In the third embodiment, the fining tube 5 is divided into two of the first dividing region 5B1 and the second dividing region 5B2, but may be divided into a plurality of three or more dividing regions. In this case, the exhaust portion may be provided in a plurality of three or more divided regions, but the exhaust portion may be provided at least in the downstream-most divided region or only in the downstream-most divided region.
The method and apparatus 1 for manufacturing a glass sheet according to the embodiments of the present utility model have been described above, but the present utility model is not limited thereto, and various modifications may be made without departing from the scope of the present utility model.
For example, in the above embodiment, the partition plate 15 is mainly for reinforcing the cylindrical portion 5p of the cleaning tube 5, but a partition plate for mainly stirring the molten glass Gm may be used instead of a part or all of the partition plate 15.
Description of the reference numerals
1. Apparatus for manufacturing glass plate
2. Melting furnace
3. Transfer device
4. Forming mechanism
5. Chengwei pipe
5B1 first divided region
5B2 second divided region
5Ba upstream dividing region
5Bb downstream partition region
5Bc upstream dividing region
14. Exhaust part
Bu bulb
Gm molten glass
Gr glass ribbon
S1 melting step
S2 clarification process
S3 forming step
Alpha inclination angle.
Claims (3)
1. A glass plate manufacturing device is provided with: a melting furnace for heating a glass raw material to generate molten glass; a precious metal refining pipe for refining molten glass produced in the melting furnace; and a forming mechanism for forming a glass ribbon using the molten glass subjected to the fining treatment,
it is characterized in that the method comprises the steps of,
the settling tube is inclined so as to be positioned higher toward the downstream side, and the inclination angle of the settling tube with respect to the horizontal axis is 0.25 to 5 °.
2. The apparatus for manufacturing glass sheets according to claim 1, wherein,
the fining tube includes an exhaust portion for exhausting bubbles generated in the molten glass at a plurality of positions in a direction from an upstream side toward a downstream side of the fining tube.
3. The apparatus for manufacturing glass sheets according to claim 2, wherein,
the settling tube is divided into a plurality of divided regions in a direction from an upstream side toward a downstream side,
the exhaust part is arranged in each divided area.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020156342A JP2022050001A (en) | 2020-09-17 | 2020-09-17 | Glass plate production method and production device |
| JP2020-156342 | 2020-09-17 | ||
| PCT/JP2021/030745 WO2022059429A1 (en) | 2020-09-17 | 2021-08-23 | Glass plate production method and production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219342012U true CN219342012U (en) | 2023-07-14 |
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ID=80776891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202190000705.7U Active CN219342012U (en) | 2020-09-17 | 2021-08-23 | Apparatus for manufacturing glass plate |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2022050001A (en) |
| KR (1) | KR20230068362A (en) |
| CN (1) | CN219342012U (en) |
| WO (1) | WO2022059429A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8196434B2 (en) * | 2007-08-08 | 2012-06-12 | Corning Incorporated | Molten glass delivery apparatus for optical quality glass |
| JP2014019629A (en) | 2012-07-20 | 2014-02-03 | Nippon Electric Glass Co Ltd | Glass plate manufacturing apparatus and its assembly method |
| JP6499250B2 (en) * | 2016-09-30 | 2019-04-10 | ＡｖａｎＳｔｒａｔｅ株式会社 | Glass substrate manufacturing method and glass substrate manufacturing apparatus |
| JP6768216B2 (en) * | 2016-12-16 | 2020-10-14 | 日本電気硝子株式会社 | Plate glass manufacturing method, clarification container and plate glass manufacturing equipment |
| JP6925582B2 (en) * | 2017-12-20 | 2021-08-25 | 日本電気硝子株式会社 | Manufacturing method and manufacturing equipment for glass articles |
| JP7138843B2 (en) * | 2018-05-30 | 2022-09-20 | 日本電気硝子株式会社 | Method for manufacturing glass article |
| JP7092021B2 (en) * | 2018-12-21 | 2022-06-28 | 日本電気硝子株式会社 | Manufacturing method of glass articles |
-
2020
- 2020-09-17 JP JP2020156342A patent/JP2022050001A/en active Pending
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2021
- 2021-08-23 WO PCT/JP2021/030745 patent/WO2022059429A1/en active Application Filing
- 2021-08-23 CN CN202190000705.7U patent/CN219342012U/en active Active
- 2021-08-23 KR KR1020227043271A patent/KR20230068362A/en active Search and Examination
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230068362A (en) | 2023-05-17 |
| WO2022059429A1 (en) | 2022-03-24 |
| JP2022050001A (en) | 2022-03-30 |
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