CN115916714A - Bushing and method for manufacturing glass fiber with special-shaped section - Google Patents
Bushing and method for manufacturing glass fiber with special-shaped section Download PDFInfo
- Publication number
- CN115916714A CN115916714A CN202180050767.3A CN202180050767A CN115916714A CN 115916714 A CN115916714 A CN 115916714A CN 202180050767 A CN202180050767 A CN 202180050767A CN 115916714 A CN115916714 A CN 115916714A
- Authority
- CN
- China
- Prior art keywords
- nozzles
- nozzle
- cooling
- nozzle row
- molten glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The bushing (4) is provided with: a substrate (41) that has a plurality of cooling regions (S) that extend in a predetermined one direction and in which cooling members configured to cool molten glass can be arranged; and a plurality of nozzles (5) provided on the substrate (41), each of the nozzles being provided with a nozzle hole (53) having a flat shape at a tip end from which molten glass (G) flows out, a pair of first wall portions (51) facing each other in a short-diameter direction of the nozzle hole (5) and having a concave cutout (54), and a pair of second wall portions (52) facing each other in a long-diameter direction of the nozzle hole (5), the bushing being configured such that the plurality of nozzles (5) are arranged with the first wall portions (51) facing each other in a direction of the cooling region (S), a first nozzle row (L1) in which the plurality of nozzles (5) are arranged with a predetermined interval in a direction in which the cooling region (S) extends being arranged between adjacent cooling regions (S), and a second nozzle row (L2) in which the plurality of nozzles (5) are arranged with a predetermined interval in a direction in which the cooling region (S) extends being arranged with a predetermined interval in the cooling region (S), the first nozzle rows (L1) being arranged such that the plurality of nozzles (5) can face each other in the first nozzle rows (L1) with the cutouts (54) provided in the pair of the nozzles (5).
Description
Technical Field
The present invention relates to an improvement in the technology for producing glass fibers having a profiled cross section.
Background
Profiled-section glass fibers having a non-circular cross section, such as a flat shape having an oval or elliptical cross section, are used in various fields because they can achieve a high reinforcing effect when mixed with a resin and combined.
Such a profiled-section glass fiber is generally produced by cooling molten glass while it is drawn out from a nozzle of a bushing. In this case, since the cross-sectional shape of the produced glass fiber depends on the shape of the nozzle hole at the nozzle tip, in the case of producing a glass fiber having a modified cross-section, the nozzle hole is often flat at the nozzle tip.
However, even when a nozzle having a flat nozzle hole is used, if the viscosity of the molten glass drawn out from the nozzle is too low, the molten glass tends to have a rounded cross section due to surface tension immediately below the tip of the nozzle, and thus, it is not possible to produce desired glass fibers having a modified cross section.
Therefore, for example, in the nozzle of patent document 1, a pair of long wall portions facing in the short diameter direction of a flat nozzle hole are provided with concave notch portions at the tip end portion of the nozzle from which molten glass flows out, and the viscosity of the molten glass is adjusted by cooling the nozzle through the concave notch portions.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2017-226579
Disclosure of Invention
Technical problem to be solved by the invention
In recent years, it has been studied to increase productivity and produce a large number of strands by increasing the number of profiled glass fibers drawn from one bushing. As described in patent document 1, by disposing the cooling member near the two notches, the number of nozzles provided in the bushing is reduced, and the productivity of the profiled-section glass fiber may not be sufficiently improved.
Further, when the cooling member is disposed near the two notches to cool the molten glass, the molten glass may be excessively cooled. Therefore, the profiled-section glass fiber may not be stably formed.
In view of the above circumstances, an object of the present invention is to stably produce a desired glass fiber having a modified cross section.
Means for solving the problems
The bushing according to the present invention includes: a substrate including a plurality of cooling regions extending in a predetermined one direction and capable of being provided with a cooling member configured to be capable of cooling molten glass; and a plurality of nozzles provided on the substrate, the nozzles including, at a tip end portion from which the molten glass flows: a nozzle hole having a flat shape, a pair of first wall portions facing each other in a short diameter direction of the nozzle hole and having concave cutouts, and a pair of second wall portions facing each other in a long diameter direction of the nozzle hole, wherein the plurality of nozzles are arranged in the bushing such that the first wall portions face in a direction of the cooling regions, and wherein: a first nozzle row in which a plurality of the nozzles are arranged at predetermined intervals along an extending direction of the cooling region; and a second nozzle row in which the plurality of nozzles are arranged at a predetermined interval in the extending direction of the cooling region at an interval from the first nozzle row, wherein the nozzles of the first nozzle row are arranged so that the cutouts provided in the pair of first wall portions of the nozzles in the first nozzle row can face the cooling region.
According to this configuration, since the first nozzle row and the second nozzle row are arranged between the cooling members, more nozzles can be arranged than in the related art. Therefore, productivity of the profiled glass fiber can be improved, and a plurality of glass fibers can be obtained at a time, so that a large number of strands can be manufactured.
Further, since the nozzles included in the first nozzle row are arranged such that one slit directly faces the cooling member and the other slit faces the cooling member via the gap region between the nozzles of the second nozzle row, the molten glass can be prevented from being excessively cooled. Therefore, the viscosity of the molten glass during molding can be appropriately adjusted, and the glass fiber having a modified cross section can be stably formed.
Further, in the case where the other slit is opposed only to the nozzles of the second nozzle row, the molten glass is not cooled.
In the present invention, it is preferable that the nozzles of the second nozzle row are arranged so that the cutouts provided in the pair of first wall portions of the nozzles in the second nozzle row can face the cooling region, respectively.
With this configuration, even in the molten glass drawn out from the nozzles included in the second nozzle row, the viscosity of the molten glass during molding can be appropriately adjusted, and the irregular-section glass fiber can be stably formed.
In the present invention, it is preferable that intervals between the plurality of nozzles in the first nozzle row and between the plurality of nozzles in the second nozzle row are narrower than widths of front ends of the slits of the nozzles in the nozzles.
With this configuration, the molten glass can be reliably prevented from being excessively cooled.
The method for producing a profiled-section glass fiber according to the present invention is characterized in that the above bushing is used to produce a profiled-section glass fiber. With this configuration, the same effects as those of the above-described configuration can be obtained.
In the present invention, preferably, the molten glass is E glass. Since the E glass is a glass which is difficult to devitrify, the productivity of the profiled cross-section glass fiber is improved.
In the present invention, it is preferable that the temperature is at the forming temperatureSaid molten glass having a thickness of 10 2.0 ～10 3.5 Viscosity of dPa · s. That is, when the viscosity of the molten glass is 10 3·5 When dPa · s or less, the viscosity of the molten glass does not become too high, and therefore the moldability of the glass fiber can be maintained well. Further, if the viscosity of the molten glass is 10 2.0 When dPa · s or more, the viscosity of the molten glass does not become too low, so that the force with which the molten glass tries to return to a circular cross section due to surface force is weakened, and the aspect ratio (major axis size/minor axis size) of the glass fiber can be increased.
Effects of the invention
According to the present invention, a desired profiled-section glass fiber can be stably produced.
Drawings
FIG. 1 is a sectional view showing an apparatus for producing a profiled-section glass fiber according to an embodiment of the present invention.
Fig. 2 is a sectional view showing the nozzle periphery of the bushing of fig. 1 in an enlarged manner.
Fig. 3 is a bottom view enlargedly showing the nozzle periphery of the bushing of fig. 1.
Fig. 4 is a view showing a nozzle of a nozzle plate according to an embodiment of the present invention, wherein (a) is a side view thereof, (B) is a sectional view taken along line A1-A1 of (a), and (c) is a sectional view taken along line B1-B1 of (a).
Fig. 5 is a bottom view enlargedly showing the nozzle periphery of the bushing of fig. 3.
Fig. 6 is an enlarged bottom view of the nozzle periphery of the nozzle plate according to the comparative example.
Description of the symbols
1: glass melting furnace
4: bushing plate
41: substrate
5: nozzle with a nozzle body
51: long wall (first wall)
52: short wall (second wall)
53: nozzle hole
54: incision
6: cooling pipe
10: device for manufacturing glass fiber with special-shaped cross section
G: molten glass
Gm: glass fiber (Single wire)
Gs: strand yarn
S: cooling zone
L1: first nozzle row
L2: second nozzle row
W: width of the opening of the slit
Detailed Description
Hereinafter, preferred embodiments will be described. However, the following embodiments are merely examples, and the present invention is not limited to the following embodiments. In addition, in each drawing, components having substantially the same function may be referred to by the same reference numerals. The numerical range expressed by the term "to" in the present specification means a range including numerical values described before and after the term "to" as a minimum value and a maximum value, respectively.
(apparatus for producing glass fiber having irregular cross section and method for producing the same)
As shown in fig. 1, the irregular cross-section glass fiber manufacturing apparatus 10 according to the present embodiment includes: a glass-melting furnace 1, a forehearth 2 connected to the glass-melting furnace 1, and a feeder 3 connected to the forehearth 2. Here, in the orthogonal coordinate system composed of XYZ shown in fig. 1, the X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction (the same applies hereinafter).
Molten glass G is supplied from the glass-melting furnace 1 to the feeder 3 through the forehearth 2 and is stored in the feeder 3. Although 1 feeder 3 is shown in fig. 1, a plurality of feeders 3 may be connected to the glass-melting furnace 1. Further, a clarification furnace may be provided between the glass-melting furnace 1 and the forehearth 2.
In this embodiment, the molten glass G is composed of E glass, but may be made of other glass materials such as D glass, S glass, AR glass, and C glass.
A bushing 4 is disposed at the bottom of the feeder 3. The nozzle plate 4 is attached to the feeder 3 via a nozzle plate block or the like. As shown in fig. 2, the bottom of the nozzle plate 4 is formed by a base plate 41, and a plurality of nozzles 5 are provided on the base plate 41. The substrate 41 is provided with a plurality of cooling regions S in which the cooling pipes 6 (see fig. 3) can be arranged and which extend in the Y direction, which is a predetermined one direction. In the cooling area S, a cooling pipe 6 as a cooling member is provided.
The molten glass G stored in the feeder 3 is drawn downward from the plurality of nozzles 5 provided on the substrate 41 of the bushing 4, and glass fibers (filaments) Gm are produced. At this time, the viscosity of the molten glass G at the forming temperature was set to 10 2.0 ～10 3·5 dPa s (preferably 10) 2.5 ～10 3·3 dpas · s). The viscosity of the molten glass G at the forming temperature is the viscosity of the molten glass G at the position of the inflow nozzle 5. A bundling agent is applied to the surface of the glass fiber Gm by an applicator not shown, and 100 to 10000 strands Gs are spun into 1 strand. The number of strands Gs depends on the glass fibers Gm obtained by spinning, and the larger the number of glass fibers Gm, the larger the number of strands Gs. The strand Gs obtained by spinning is wound as a fiber bundle Gr around a collet 7 of a winding device. The strands Gs are cut into predetermined lengths of, for example, about 1 to 20mm, and used as chopped strands.
At least a part of the glass-melting furnace 1, the forehearth 2, the feeder 3, the bushing 4, the nozzle 5, and the cooling pipe 6 is formed of platinum or a platinum alloy (for example, a platinum-rhodium alloy).
In order to adjust the viscosity of the molten glass G, one or more elements selected from the forehearth 2, the feeder 3, and the bushing 4 may be heated by electric heating or the like.
As shown in fig. 2 and 3, the nozzle 5 includes a pair of long wall portions (first wall portions) 51 facing each other in the X direction, a pair of short wall portions (second wall portions) 52 facing each other in the Y direction, and a flat (oblong in the present embodiment) nozzle hole 53 defined by the long wall portions 51 and the short wall portions 52 at a distal end portion (lower portion). Each long wall portion 51 is provided with a notch 54, and a part of the nozzle hole 53 communicates with the external space of the nozzle 5 through the notch 54. In this embodiment, the long diameter direction of the nozzle holes 53 coincides with the Y direction, and the short diameter direction of the nozzle holes 53 coincides with the X direction. In this embodiment, the dimension in the X direction of the short wall portion 52 is shorter than the dimension in the Y direction of the long wall portion 51. Of course, these dimensional relationships of the wall portions 51, 52 are not particularly limited. The cross-sectional shape of the nozzle hole 53 may be an oval shape or another shape.
As shown in fig. 4 (a) to (c), the slits 54 provided in the long wall portions 51 of the nozzle 5 are trapezoidal in the same size. In detail, in this embodiment, the notch 54 has an isosceles trapezoidal shape having a center point T1 of the upper base on the center line M1 of the long wall portion 51 and being symmetrical with respect to the center line M1 (the upper base is shorter than the lower base). The inner angle θ 1 (inner angle on both sides of the upper base) is, for example, greater than 90 ° and 160 ° or less (preferably 110 ° to 150 °). In this embodiment, the nozzle hole 53 has a flat oblong shape and a constant shape in the Z direction. As shown in fig. 4 c, the ratio (a/b) of the Y-direction dimension (major axis dimension) a to the X-direction dimension (minor axis dimension) b of the nozzle hole 53 is in the range of 1.5 to 20 (preferably 3 to 10) at the tip end portion of the nozzle 5.
With such a configuration, it is possible to suppress shape deformation caused by the notch 54 of the nozzle 5, and it is also possible to sufficiently secure the opening area of the notch 54. Therefore, the glass fiber Gm having a deformed cross section having a non-circular cross section such as a flat shape can be stably formed. In other words, the produced glass fibers Gm have small variations in cross-sectional shape.
The nozzle 5 may have a flat nozzle hole 53 defined by the long wall portion 51 and the short wall portion 52 at the distal end portion, and the shape of the proximal end portion (upper portion) may be the same as or different from the shape of the distal end portion of the nozzle 5.
Preferably, 200 to 10000 nozzles 5 are arranged on the substrate 41. By arranging the above-described number of nozzles 5, the strands Gs having a large number of strands can be obtained. In addition, it is preferable that 1500 or more nozzles 5 are arranged on the substrate 41.
The cooling pipe 6 circulates cooling water F as a fluid therein to perform a cooling function. The cooling pipe 6 is a plate-like body, and a plurality of cooling pipes are arranged so that the plate surface thereof is along a predetermined direction (vertical direction). In the present embodiment, the cooling pipe 6 is integrally provided in the cooling region S of the substrate 41, but may be provided separately from the bottom of the bushing 4. The cooling pipe 6 may be a tubular body. The height position of the cooling pipe 6 can be adjusted as appropriate according to the cooling conditions of the molten glass G. For example, the cooling pipe 6 may be disposed above the tip of the nozzle 5 so as not to directly face the molten glass G drawn from the nozzle 5, or may be disposed so as to extend over both the nozzle 5 and the molten glass G drawn from the nozzle 5. The cooling member is not limited to the cooling pipe 6, and may be a cooling fin or the like that guides an air flow to perform a cooling function.
As shown in fig. 3 and 5, in the substrate 41 of the bushing 4, a plurality of nozzle rows L1, L2 are arranged in parallel with a space in the X direction between adjacent cooling regions S. Each of the nozzle rows L1 and L2 is configured by arranging a plurality of nozzles 5, which orient the longitudinal direction of the nozzle holes 53 in the Y direction, on the same straight line extending in the Y direction. The cooling pipe 6 is disposed between the nozzle rows L1 and L2 adjacent to each other in the X direction in parallel with the nozzle rows L1 and L2. In the present embodiment, the nozzle rows L1 and L2 are identical to each other except that the arrangement positions of the nozzles 5 in the Y direction are different from each other. Thereby, as shown in fig. 5, the cooling pipe 6 faces the notch 54a of the nozzle 5 adjacent to the cooling pipe 6, and the molten glass G flowing through the nozzle 5 is cooled by the notch 54 a. Specifically, the molten glass G is rapidly cooled from a temperature of 1000 ℃ or higher at the tip of the nozzle 5 by the cooling pipe 6. The cooling pipe 6 also has a function of cooling the bushing 4 and the nozzle 5 to suppress thermal deterioration of the bushing 4 and the nozzle 5, thereby improving durability.
Further, since the notch 54b of the nozzle 5, which is not adjacent to the cooling pipe 6, faces the cooling member 6 through the gap region between the nozzles 5 included in the adjacent nozzle row (the nozzle row adjacent to the nozzle row L1 is L2, and the nozzle row adjacent to the nozzle row L2 is L1), the molten glass G can be prevented from being excessively cooled. Therefore, the viscosity of the molten glass G during molding can be appropriately adjusted, and the glass fiber having a modified cross section can be stably molded. That is, the molten glass G on the notch 54a side of the nozzle 5 is rapidly cooled by being directly opposed to the cooling pipe 6, and the molten glass G on the notch 54b side of the nozzle 5 is slowly cooled compared to the molten glass G on the notch 54a side because it is opposed to the cooling pipe 6 with a predetermined distance. Therefore, the molten glass G on the side of the notch 54a is immediately solidified and is difficult to deform, while the molten glass G on the side of the notch 54b can be deformed to some extent before solidification. In order to stably form a profiled-section glass fiber having a high aspect ratio, only a part of the molten glass G needs to be rapidly solidified to suppress the rounding of the section of the fiber, while the other part needs to be gradually solidified. For example, if the molten glass G on both major diameter sides is rapidly solidified, the glass fibers are likely to be cut although the flattening ratio is high.
As shown in fig. 6, if the notch 54b of the nozzle 5, which is formed only by the nozzle row L1 and is not adjacent to the cooling pipe 6, does not face the cooling member 6, the molten glass G cannot be sufficiently cooled.
In the present embodiment, the intervals D1 and D2 are narrower than the width W at the tip ends of the notches 54a and 54 b. Therefore, the molten glass G can be suppressed from being excessively cooled.
The distances D1 and D2 between the nozzles 5 are preferably 1 to 10mm, more preferably 1 to 5mm. This enables more nozzles 5 to be arranged on the substrate 41. The width W at the tip of the slit 54 is preferably 2 to 20mm. The ratio (W/D (D1, D2)) of the width W at the tip of the slit 54 to the intervals D1 and D2 may be, for example, 0.5 to 5, but is preferably 1.1 to 2.5.
The number of nozzles 5 included in the 1 nozzle rows L1 and L2 is preferably 10 to 500 or less.
According to the present embodiment in which the irregularly shaped cross-section glass fiber is produced as described above, the following operational effects can be obtained.
In the present embodiment, since the first nozzle row L1 and the second nozzle row L2 are arranged between the cooling regions S (cooling pipes 6), more nozzles 5 can be arranged than in the related art. Therefore, the productivity of the irregularly shaped cross-section glass fiber can be improved. Further, since a large number of nozzles 5 are arranged, the number of glass fibers Gm obtained at one time increases, and as a result, the strands Gs having a large number of strands can be produced. Further, with respect to the nozzles 5 included in the first nozzle row L, one notch 54a directly faces the cooling pipe 6, and the other notch 54b faces the cooling pipe 6 via the gap region between the nozzles 5 of the second nozzle row L2, so that the molten glass G can be suppressed from being excessively cooled. Therefore, the viscosity of the molten glass G during molding can be appropriately adjusted, and the glass fiber having a modified cross section can be stably formed.
Further, with regard to the nozzles 5 included in the second nozzle row L, since one notch 54a directly faces the cooling pipe 6 and the other notch 54b faces the cooling pipe 6 via the gap region between the nozzles 5 of the first nozzle row L1, the molten glass G can be suppressed from being excessively cooled.
The method for producing the irregularly-shaped cross-section glass fiber according to the embodiment of the present invention has been described above, but the present invention is not limited thereto, and various modifications can be made without departing from the scope of the present invention.
In the above embodiment, the intervals D1 and D2 between the nozzles 5 are equal, but the intervals D1 and D2 may be different. In this case, the ratio D1/D2 of D1 to D2 is preferably in the range of 0.5 to 2.0.
Claims (6)
1. A bushing, comprising:
a substrate including a plurality of cooling regions extending in a predetermined one direction and capable of being provided with a cooling member configured to be capable of cooling molten glass; and
a plurality of nozzles provided on the substrate, the nozzles including, at a tip end portion from which the molten glass flows: a nozzle hole having a flat shape, a pair of first wall portions facing each other in a short diameter direction of the nozzle hole and having a concave cutout, and a pair of second wall portions facing each other in a long diameter direction of the nozzle hole,
the nozzle plate is provided with a plurality of nozzles so that the first wall portion faces the cooling region,
disposed between the adjacent cooling regions are:
a first nozzle row in which a plurality of the nozzles are arranged at predetermined intervals along an extending direction of the cooling region; and
a second nozzle row in which the plurality of nozzles are arranged at a predetermined interval from the first nozzle row and along an extending direction of the cooling region,
the nozzles of the first nozzle row are arranged so that the cutouts provided in the pair of first wall portions of the nozzles in the first nozzle row can face the cooling region, respectively.
2. The bushing as recited in claim 1,
the nozzles of the second nozzle row are arranged so that the cutouts provided in the pair of first wall portions of the nozzles in the second nozzle row can face the cooling region, respectively.
3. Tip plate according to claim 1 or 2,
intervals between the plurality of nozzles in the first nozzle row and between the plurality of nozzles in the second nozzle row are narrower than widths of leading ends of the cutouts of the nozzles.
4. A method for manufacturing glass fiber with a special-shaped cross section is characterized in that,
use of the tip plate according to any of claims 1 to 3 for the manufacture of profiled-section glass fibres.
5. The method for producing a profiled-section glass fiber according to claim 4,
the molten glass is E glass.
6. The method for producing a profiled-section glass fiber according to claim 4 or 5,
at the forming temperature, the molten glass has a thickness of 10 2.0 ～10 3.5 Viscosity of dPa · s.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020137363A JP2022033465A (en) | 2020-08-17 | 2020-08-17 | Bushing and method for manufacturing irregular shaped cross section glass fiber |
| JP2020-137363 | 2020-08-17 | ||
| PCT/JP2021/024145 WO2022038901A1 (en) | 2020-08-17 | 2021-06-25 | Bushing and deformed cross-section glass fiber manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115916714A true CN115916714A (en) | 2023-04-04 |
Family
ID=80350309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180050767.3A Pending CN115916714A (en) | 2020-08-17 | 2021-06-25 | Bushing and method for manufacturing glass fiber with special-shaped section |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2022033465A (en) |
| CN (1) | CN115916714A (en) |
| TW (1) | TW202210429A (en) |
| WO (1) | WO2022038901A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010083750A (en) * | 2008-09-03 | 2010-04-15 | Nippon Electric Glass Co Ltd | Apparatus and method for manufacturing glass fiber |
| JP5622164B2 (en) * | 2008-11-20 | 2014-11-12 | 日本電気硝子株式会社 | Glass fiber manufacturing apparatus and glass fiber manufacturing method |
| JP5488863B2 (en) * | 2009-01-19 | 2014-05-14 | 日本電気硝子株式会社 | Glass fiber manufacturing apparatus and glass fiber manufacturing method |
| JP6768226B2 (en) * | 2016-06-23 | 2020-10-14 | 日本電気硝子株式会社 | Deformed cross-section glass fiber manufacturing equipment and its manufacturing method |
| JP2018016506A (en) * | 2016-07-26 | 2018-02-01 | 日本電気硝子株式会社 | Manufacturing apparatus for glass fibers of irregular shape cross section, and production of the glass fibers |
| JP2019108262A (en) * | 2017-12-19 | 2019-07-04 | 日本電気硝子株式会社 | Manufacturing apparatus and manufacturing method for glass fiber |
-
2020
- 2020-08-17 JP JP2020137363A patent/JP2022033465A/en active Pending
-
2021
- 2021-06-25 WO PCT/JP2021/024145 patent/WO2022038901A1/en active Application Filing
- 2021-06-25 CN CN202180050767.3A patent/CN115916714A/en active Pending
- 2021-07-19 TW TW110126380A patent/TW202210429A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022033465A (en) | 2022-03-02 |
| TW202210429A (en) | 2022-03-16 |
| WO2022038901A1 (en) | 2022-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017221471A1 (en) | Nozzle for producing glass fibers having modified cross-section, and modified cross-section glass fiber production device and production method therefor | |
| CN112585098B (en) | Bushing for producing glass fibers and method for producing glass fibers | |
| CN110337422B (en) | Nozzle for producing glass fiber and method for producing glass fiber | |
| CN115916714A (en) | Bushing and method for manufacturing glass fiber with special-shaped section | |
| WO2018020743A1 (en) | Manufacturing apparatus and manufacturing method for modified cross-section glass fiber | |
| WO2018123888A1 (en) | Nozzle for modified-section glass fiber, device for manufacturing modified-section glass fiber, method for manufacturing same, and modified-section glass fiber | |
| JP2019108262A (en) | Manufacturing apparatus and manufacturing method for glass fiber | |
| JP2021001111A (en) | Glass fiber aggregate | |
| WO2022264606A1 (en) | Bushing, glass fiber manufacturing device, and glass fiber manufacturing method | |
| WO2022264607A1 (en) | Bushing, glass fiber production device, and glass fiber production method | |
| JP7225889B2 (en) | BUSHING, GLASS STRAND MANUFACTURING APPARATUS, MANUFACTURING METHOD THEREOF, AND GLASS STRAND | |
| CN115803293A (en) | Nozzle for profiled cross-section glass fiber and method for manufacturing profiled cross-section glass fiber | |
| CN115803294A (en) | Nozzle for profiled cross-section glass fiber and method for manufacturing profiled cross-section glass fiber | |
| JP2019108249A (en) | Manufacturing apparatus and manufacturing method for glass fiber | |
| JP7262704B2 (en) | Strand manufacturing method | |
| CN115066403A (en) | Apparatus and method for producing glass fiber | |
| TWI843926B (en) | Glass fiber manufacturing device and manufacturing method | |
| JP2024067815A (en) | Glass fiber manufacturing nozzle, glass fiber manufacturing device, and glass fiber manufacturing method | |
| CN113979632A (en) | Glass fiber discharge spout structure, bushing and apparatus for producing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |