JP7396430B2 - Feeder and glass article manufacturing method - Google Patents

Description

The present invention relates to a feeder that allows molten glass to flow therethrough, and a method for manufacturing glass articles using the feeder.

For example, when supplying molten glass to a bushing for forming glass fiber or a molded body for forming plate glass, the molten glass flowing inside the feeder is kept warm to prevent excessive temperature drop. There is a need. One method that has become widely adopted for this purpose is to place a burner in the interior of the feeder that mixes fuel such as natural gas and air (oxygen), and heat the molten glass with the heat. (See Patent Document 1).

By the way, in the case of the method of heating using a burner, (1) environmentally hazardous substances contained in the molten glass, such as boron oxide (B ₂ O ₃ ), are likely to volatilize due to the heat of the burner; (2) the combustion of the burner (3) If dust contained in combustion exhaust gas gets mixed into the molten glass, the oxidation-reduction atmosphere in the internal space tends to change depending on the state, and reboiling bubbles are likely to occur in the molten glass. There is a risk that problems such as defects (foreign objects) may occur in the product.

Therefore, for example, Patent Document 2 discloses a method in which an electric heating element is disposed in the internal space of a feeder instead of a burner, and the molten glass is heated by the heat. In detail, in the same document, in order to equalize the temperature distribution of the molten glass flowing inside the feeder, a part of the heat propagation path from the electric heating element to the surface of the molten glass is added directly to the molten glass. It is disclosed that a restriction section is provided to limit the heat transfer. This restricts the direct heat transfer from the electric heating element to the molten glass, and also creates a heat transfer path that bypasses the restriction part and reaches the surface of the molten glass, and the restriction part is heated by the heat from the electric heating element. After that, the heat from the electric heating element is transmitted to the molten glass through two heat transfer paths, which reach the surface of the molten glass as heat from the restriction part.

Special Publication No. 2010-513183 International Publication No. 2014/185132

In the configuration disclosed in Patent Document 2, the space where the electric heating element is placed and the space where the molten glass is placed are in direct communication with each other in the heat transfer path that bypasses the restriction part and reaches the surface of the molten glass. . Therefore, if a part of the electric heating element is damaged due to a malfunction or the like, there is a possibility that the damaged part may be mixed into the molten glass via the communication portion between the two spaces. In particular, when a part of the electric heating element is damaged by a spark, the damaged part is likely to be scattered around by the impact of the spark and mixed into the molten glass. If such a defective portion is mixed into the molten glass, it will cause defects in the manufactured glass article.

An object of the present invention is to reliably prevent defects from occurring in glass articles.

(1) The present invention, which was devised to solve the above problems, provides a feeder for distributing molten glass, which includes: an electric heating element that heats the molten glass; a first space in which the molten glass is placed; and an electric heating element. a partition member that partitions the space from a second space in which the electrical heating element is arranged, the electric heating element is arranged in the second space so that its longitudinal direction is along the partitioning member, and the electric heating element is spaced upward from the partitioning member. The electric heating element is characterized in that a plurality of supports that contact the electric heating element and the partitioning member are arranged at intervals in the longitudinal direction of the electric heating element, between the electric heating element and the partitioning member. do.

(2) In the configuration of (1) above, it is preferable that the electric heating element extends along the width direction orthogonal to the flow direction of the molten glass.

(3) In the configuration of (1) or (2) above, it is preferable that the second space is continuous so as to cover the entire width of the molten glass in the width direction perpendicular to the flow direction of the molten glass.

(4) In the configuration of (3) above, it is preferable that electric heating elements are disposed directly above both ends of the molten glass in the width direction and directly above the central portion of the molten glass in the width direction.

(5) In any of the configurations (1) to (4) above, the second space may be divided into a plurality of parts in the flow direction of the molten glass.

(6) In any of the configurations (1) to (5) above, the partition member is preferably formed of alumina electroformed brick.

(7) In any of the configurations (1) to (6) above, it is preferable that the bottom of the feeder be provided with a bushing for forming the molten glass into glass fibers.

(8) The present invention, which was created to solve the above problems, provides a method for manufacturing a glass article that includes a distribution step of distributing molten glass inside a feeder, in which an electric heating element for heating the molten glass is provided in the feeder. At the same time, a partition member is provided that partitions a first space in which the molten glass is placed and a second space in which an electric heating element is placed, and the electric heating element is arranged so that its longitudinal direction is along the partition member, and the electric heating element The body is spaced apart upwardly from the partition member, and between the electric heating element and the partition member, a plurality of supports contacting the electric heating element and the partition member are arranged at intervals in the longitudinal direction of the electric heating element. It is characterized by being placed.

According to the present invention, it is possible to reliably prevent defects in glass articles due to loss of the heating element inside the feeder.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal side view which shows the manufacturing apparatus of a glass article provided with the feeder based on 1st embodiment of this invention. 2 is a sectional view taken along line AA in FIG. 1. FIG. 3 is a sectional view taken along line BB in FIG. 2. FIG. FIG. 3 is a plan view for explaining the support form of the electric heating element. FIG. 4A is a sectional view taken along line CC in FIG. 4A. It is a vertical front view showing a feeder concerning a second embodiment of the present invention. It is a vertical front view showing a feeder concerning a third embodiment of the present invention. It is a vertical front view showing a feeder concerning a fourth embodiment of the present invention. It is a vertical front view showing a feeder concerning a fifth embodiment of the present invention. It is a vertical front view showing a feeder concerning a sixth embodiment of the present invention. It is a vertical front view showing a feeder concerning a seventh embodiment of the present invention. It is a vertical front view showing a feeder concerning an eighth embodiment of the present invention. It is a vertical front view showing a feeder concerning a ninth embodiment of the present invention. It is a longitudinal front view showing a feeder concerning a tenth embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
As shown in FIG. 1, the method for manufacturing a glass article according to the first embodiment uses a glass article manufacturing apparatus 1 to manufacture glass fiber Gf as a glass article. A glass article manufacturing apparatus 1 includes a melting furnace 2 that melts frit Gr to form molten glass Gm, and a feeder 3 that is connected to the downstream side of the melting furnace 2 and allows the molten glass Gm to flow therein. There is. The walls defining the melting space of the melting furnace 2 and the circulation space of the feeder 3 are made of a refractory material such as brick.

An inlet 2a is provided at the upstream end of the melting furnace 2 for charging glass raw material Gr mixed with silica sand, limestone, soda ash, cullet, etc. into the furnace. A raw material supply means (not shown) such as a screw feeder is arranged in the input port 2a.

The melting furnace 2 is further provided with a heating means (not shown). As the heating means, for example, a gas burner placed above the molten glass Gm, an electric heater, or an electric heating means such as an electrode immersed in the molten glass Gm can be used. Molten glass Gm is continuously formed by melting the glass raw material Gr input from the input port 2a by heating by the heating means. Molten glass Gm flows into the feeder 3 from the downstream end of the melting furnace 2 . Note that the melting furnace 2 may melt the frit Gr only by gas combustion or only by electric heating, or may melt it by using both gas combustion and electric heating.

A plurality of bushings 4 made of platinum or a platinum alloy are provided at the bottom 3a of the feeder 3 at intervals in the flow direction X of the molten glass Gm. Each bushing 4 is provided with a plurality of bushing nozzles (not shown). Each nozzle causes molten glass Gm to flow down to form glass fibers Gf. The molten glass Gm flowing down from each nozzle is formed into glass fibers Gf (glass filaments) having a predetermined diameter while being stretched downward. Thereafter, the glass fibers Gf are coated with a sizing agent so that a plurality of glass fibers Gf are bundled into a glass strand.

That is, the method for manufacturing a glass article according to the present embodiment includes a melting step of melting frit Gr in a melting furnace 2 to form molten glass Gm, and flowing the molten glass Gm into the feeder 3 to form a molten glass Gm. , and a forming step in which molten glass Gm flows down from a bushing nozzle provided in bushing 4 to form glass fiber Gf.

As shown in FIGS. 2 and 3, the feeder 3 includes an electric heating element 5 that heats and keeps the molten glass Gm warm, a first space S1 in which the molten glass Gm is placed, and a first space S1 in which the electric heating element 5 is placed. It further includes a partition plate 6 that is a partition member that completely partitions the two spaces S2. The molten glass Gm is heated indirectly via the partition plate 6. Specifically, after the partition plate 6 is heated by the heat from the electric heating element 5 and the heat from the second space S2 heated by the electric heating element 5, the molten glass Gm is heated by the heat from the partition plate 6. Ru. Note that the partition member is not limited to a plate shape, but can partition the first space S1 and the second space S2, and can indirectly heat the molten glass Gm by the heat of the electric heating element 5, etc. You can choose any shape you want. For example, it may be in a block shape.

According to such a configuration, the first space S1 and the second space S2 are independent spaces that do not have a communicating part with each other, so that even if a part of the electric heating element 5 is damaged due to a spark or the like, Even in this case, the missing part remains reliably within the second space S2. Therefore, when the electric heating element 5 is damaged or replaced, the defective part does not enter the first space S1 and mix into the molten glass Gm, so that high-quality glass fiber Gf with few defects can be formed. .

In the width direction Y perpendicular to the flow direction X of the molten glass Gm, the second space S2 is continuous so as to cover the entire width of the molten glass Gm, and in the flow direction X, the beam is a dividing member extending along the width direction Y. It is divided into multiple parts by 3b. Each second space S2 accommodates one or more (two in the illustrated example) electric heating elements 5 in a horizontal orientation. In each second space S2, the heating temperature of the electric heating element 5 can be adjusted individually, and the temperature distribution in the flow direction X of the molten glass Gm is managed in a plurality of zones corresponding to the second space S2. It looks like this. Note that the second space S2 may be divided into a plurality of parts in the width direction Y, or may not be divided into a plurality of parts in the flow direction X.

The electric heating element 5 is a resistance heating element made of silicon carbide (SiC), for example, and generates heat when energized. In this embodiment, the electric heating element 5 is a U-shaped member (see FIGS. 4A and 4B) having a bent portion 5a and two straight portions 5b arranged in parallel via the bent portion 5a. It is. Two linear parts 5b of the electric heating element 5 are supported by a support block 3c arranged on one side wall of the feeder 3. In this state, the two straight portions 5b extend along the width direction Y so as to face each other in the flow direction X. That is, the U-shaped electric heating element 5 is arranged laterally along the width direction. Therefore, since the vertical thickness of the electric heating element 5 can be kept small, the volume of the second space S2 can be reduced and heat loss in the second space S2 can be suppressed. In addition, since the end of the electric heating element 5 (the end of the straight part 5b) faces the side space of the feeder 3, the side space of the feeder 3 can be used to replace the electric heating element 5 (pulling work, etc.) can be easily implemented. Note that the two straight portions 5b may extend along the width direction Y so as to face each other in the vertical direction.

The length of the electric heating element 5 in the width direction Y in the second space S2 is set to a length that can cover substantially the entire width of the molten glass Gm. As a result, the electric heating elements 5 are placed directly above both ends of the molten glass Gm in the width direction and directly above the central portion of the molten glass Gm in the width direction. Therefore, the entire width of the molten glass Gm can be heated uniformly, and variations in the temperature distribution of the molten glass Gm can be suppressed. Note that the length of the electric heating element 5 in the width direction Y within the second space S2 can be adjusted as appropriate depending on the amount of heat required to keep the molten glass Gm warm. Of course, the amount of heat given to the molten glass Gm can also be adjusted by adjusting the magnitude of the current supplied to the electric heating element 5.

The partition plate 6 is continuous in the width direction Y so as to cover the entire width of the molten glass Gm, and is divided into a plurality of parts in the flow direction X so as to correspond to the second space S2. By dividing the partition plate 6 into a plurality of pieces in the flow direction X, the area and weight of each piece are reduced, so the partition plate 6 becomes difficult to bend.

It is preferable that the partition plate 6 is made of alumina electroformed brick. In this way, the heat conduction of the partition plate 6 is improved, so that the partition plate 6 is efficiently heated. As a result, it becomes easier to heat the molten glass Gm with the heat from the partition plate 6. Furthermore, the durability of the partition plate 6 is improved because the partition plate 6 is less susceptible to thermal deterioration. Note that the material of the partition plate 6 is not limited to alumina electroformed brick, and may be, for example, fired brick. The thickness of the partition plate 6 is preferably 5 to 100 mm.

As shown in FIGS. 4A and 4B, the electric heating element 5 is supported in the second space S2 while being spaced upward from the partition plate 6. Specifically, the electric heating element 5 is supported from below by a plurality of supports 7 arranged at intervals on the partition plate 6. Of course, the manner in which the electric heating element 5 is supported is not limited to this. Note that the shape of the support body 7 is not particularly limited, and may be, for example, a polygonal prism such as a square prism, a cylinder, or the like. Alternatively, the support body 7 may not be divided into a plurality of pieces, but may be, for example, a single plate-like body. The material of the support body 7 is not particularly limited as long as it is a refractory material, and may be made of, for example, refractory bricks, ceramics, or the like.

Hereinafter, feeders according to other embodiments of the present invention will be described. Note that the feeders according to other embodiments have a common feature that the first space and the second space are completely partitioned by a partition plate, but the structure and the like are partially changed. In feeders according to other embodiments, components having the same function or shape as the feeder according to the first embodiment described above are designated by the same reference numerals in the drawings for explaining each embodiment. Duplicate explanations have been omitted.

(Second embodiment)
As shown in FIG. 5, the feeder 3 according to the second embodiment is different from the feeder according to the first embodiment in that the electric heating elements 5 arranged in the second space S2 are arranged at intervals in the width direction. The point is that a plurality (two in the illustrated example) are provided at different locations.

In the width direction of the second space S2, the electric heating elements 5 include a pair of electric heating elements 5 located on both sides symmetrically with respect to the center as a reference, and a plurality of electric heating elements 5 are arranged along the flow direction X of the molten glass Gm. They are placed at equal intervals. Further, each of the electric heating elements 5 has a U-shape and is attached to the upper part of the inner circumferential wall of the feeder 3. Note that each U-shaped electric heating element 5 is arranged laterally along the width direction.

(Third to Fifth Embodiments)
As shown in FIGS. 6 to 8, the feeders 3 according to the third to fifth embodiments are the feeders according to the second embodiment in which the orientation and mounting position of the U-shaped electric heating element 5 are changed. be.

In the feeder 3 according to the third embodiment shown in FIG. 6, the electric heating elements 5 are arranged vertically along the width direction. In the feeder 3 according to the fourth embodiment shown in FIG. 7, the mounting position of the electric heating element 5 is changed from the side part 3d to the upper part of the inner peripheral wall of the feeder 3, and the electric heating element 5 is installed along the width direction. It is arranged vertically. In the feeder 3 according to the fifth embodiment shown in FIG. 8, the mounting position of the electric heating element 5 is changed from the side part 3d to the upper part of the inner circumferential wall of the feeder 3, and the electric heating element 5 is mounted along the flow direction. It is arranged vertically.

In the present invention, the orientation and mounting position of the electric heating element 5 are not particularly limited, but from the viewpoint of reducing the volume of the second space S2 and increasing the heating efficiency by the electric heating element 5, the electric heating element 5 is It is preferable to arrange it laterally (preferably on a horizontal plane).

(Sixth embodiment)
As shown in FIG. 9, the feeder 3 according to the sixth embodiment is different from the feeder according to the first embodiment in that a bank portion 3e is formed on a side portion 3d of the inner peripheral wall of the feeder 3. and that a recess C for accommodating the electric heating element 5 is formed above the bank portion 3e.

A part of the side portion 3d of the inner peripheral wall protrudes toward the center in the width direction, and this protruding portion forms a bank portion 3e. The partition plate 6 is provided so as to straddle between the upper end portions of the bank portions 3e on both sides in the width direction. The overhanging dimension of the bank portion 3e is set to be longer than the width direction dimension of the electric heating element 5, and the electric heating element 5 is configured to be completely accommodated in the recess C. In addition, in this embodiment, the U-shaped electric heating element 5 is attached to the upper part of the inner peripheral wall of the feeder 3, and is arrange|positioned vertically along the width direction.

(Seventh embodiment)
As shown in FIG. 10, the feeder 3 according to the seventh embodiment is different from the feeder according to the first embodiment in that a passage P is provided between the upper part and the side part 3d of the inner peripheral wall of the feeder 3. The second point is that an expanded space Sa is formed by expanding the second space S2 to the outside of the side portion 3d in the width direction via the passage P.

The partition plate 6 is provided so as to straddle between the upper end portions of the respective side portions 3d on both sides in the width direction. The expansion space Sa is formed along the flow direction of the molten glass G, and the electric heating element 5 is housed in the upper part of the expansion space Sa. In addition, in this embodiment, the U-shaped electric heating element 5 is attached to the upper part of the inner peripheral wall of the feeder 3, and is arrange|positioned vertically along the width direction.

Note that, as described in the seventh embodiment, in the present invention, the electric heating element 5 may be placed at a position away from directly above the molten glass Gm as long as it is within a range where the molten glass Gm can be heated.

(Eighth embodiment)
As shown in FIG. 11, the feeder 3 according to the eighth embodiment is the feeder according to the seventh embodiment, except that the number of electric heating elements and the mounting positions thereof are changed.

In the feeder 3 according to the eighth embodiment, the mounting position of the electric heating element 5 is changed from the upper part of the inner peripheral wall of the feeder 3 to the side wall surrounding the expansion space Sa. In addition, the number of electric heating elements is changed from one pair (two) to three pairs (six), and three pairs of electric heating elements 5 are arranged in the vertical direction in the expanded space Sa. are arranged at equal intervals.

(Ninth embodiment)
As shown in FIG. 12, the feeder 3 according to the ninth embodiment is different from the feeder according to the first embodiment in that the number of electric heating elements 5 is only one; The electric heating element 5 is surrounded by a partition plate 6 (below and on both sides).

The electric heating elements 5 are attached to the upper part of the inner circumferential wall of the feeder 3 at the center in the width direction, and a plurality of electric heating elements 5 are arranged at equal intervals along the flow direction of the molten glass G. The partition plate 6 includes a first portion extending horizontally below the electric heating element 5 and a second portion extending vertically on both sides of the electric heating element 5 in the width direction. The second space S2 is divided into sections.

(Tenth embodiment)
As shown in FIG. 13, the feeder 3 according to the tenth embodiment is the feeder according to the first embodiment in which the U-shaped electric heating element is changed to a rod-shaped electric heating element.

The electric heating element 5 is continuous in the width direction from one side 3d to the other side 3d on the inner circumferential wall of the feeder 3.

Note that the present invention is not limited to the configuration of the embodiments described above, nor is it limited to the effects described above. The present invention can be modified in various ways without departing from the gist of the invention.

In the embodiments described above, the feeder is configured to supply molten glass to a bushing for molding glass fibers, but is not limited thereto. For example, the feeder may be configured to supply molten glass to a molded body for molding a glass article such as a glass tube or a glass plate (including a glass roll).

In the embodiments described above, the electric heating element has a U-shape or a rod-shape (linear shape), but the shape of the electric heating element is not limited thereto. For example, any shape such as a U-shape (a shape in which the ends of heating elements extending parallel and of equal length are connected by a heating element extending perpendicularly, and the angle of the connection part is 90°) or a meandering shape. However, a shape that can be heated in a planar manner is preferable.

In the above embodiment, a case has been described in which the entire width of the molten glass is heated by one electric heating element extending along the width direction from one side wall of the feeder, but the arrangement of the electric heating element is not limited to this. . For example, multiple electric heating elements may be used to heat the entire width of the molten glass. Specifically, a pair of electric heating elements may be extended from both sides in the width direction symmetrically with respect to the center in the width direction to heat the entire width of the molten glass. However, even in this case, it is preferable that at least one of the pair of electric heating elements or an electric heating element different from the pair of electric heating elements is placed directly above the widthwise center of the molten glass. .

Note that this application includes the following inventions.

(1) In a feeder that circulates molten glass inside, an electric heating element that heats the molten glass, and a partition member that completely partitions a first space where the molten glass is placed and a second space where the electric heating element is placed. It is characterized by having the following. According to such a configuration, the first space in which the molten glass is placed and the second space in which the electric heating element is placed are completely partitioned by the partition member, and thus become independent spaces. Therefore, even if a part of the electric heating element is damaged due to sparks or the like, the damaged part remains reliably within the second space and does not mix into the molten glass in the first space. Here, after the partition member is heated by the heat from the electric heating element and the heat from the second space heated by the electric heating element, the molten glass is heated by the heat from the partition member. That is, the molten glass is heated indirectly via the partition member.

(2) In the configuration of (1) above, it is preferable that at least a part of the electric heating element is placed directly above the molten glass. In this way, the heat of the electric heating element is easily transmitted to the molten glass, so that the heating efficiency of the molten glass is improved.

(3) In the configuration of (2) above, it is preferable that the electric heating element is disposed laterally in the second space. In this way, the volume of the second space that accommodates the electric heating element can be reduced, so that heat loss in the second space is reduced. Therefore, the molten glass can be efficiently heated while suppressing the electrical energy input to the electric heating element.

(4) In the configuration of (3) above, it is preferable that the electric heating element extends along the width direction orthogonal to the flow direction of the molten glass. In this way, since the end of the electric heating element faces the side space of the feeder, the electric heating element can be replaced using the side space of the feeder. The space to the side of the feeder has a lower temperature than the space above it, and often has more space. Therefore, the work of replacing the electric heating element becomes easier than when replacing the electric heating element using the space above the feeder. Note that when the electric heating element extends along the flow direction of the molten glass or the vertical direction, it is often necessary to replace the electric heating element using the space above the feeder.

(5) In any of the configurations (1) to (4) above, it is preferable that the second space is continuous so as to cover the entire width of the molten glass in the width direction perpendicular to the flow direction of the molten glass. . The second space is a heating space heated by the heat of the electric heating element. Therefore, if the second space is continuous so as to cover the entire width of the molten glass, it becomes easier to uniformly heat the entire width of the molten glass with heat from the partition member provided at a position corresponding to the second space. As a result, the temperature distribution of the molten glass flowing through the feeder is made uniform, so that high-quality glass articles can be manufactured from the molten glass.

(6) In the configuration of (5) above, it is preferable that the electric heating elements are disposed directly above both widthwise ends of the molten glass and directly above the widthwise center of the molten glass. In this way, the partition member is heated more quickly and uniformly in the width direction, making it easier to more uniformly heat the entire width of the molten glass with the heat from the partition member.

(7) In any of the configurations (1) to (6) above, the second space may be divided into a plurality of parts in the flow direction of the molten glass. In this way, the temperature distribution in the flow direction of the molten glass can be managed in a plurality of zones, so the molten state of the molten glass can be precisely controlled.

(8) In any one of the configurations (1) to (7) above, it is preferable that the partition member is formed of alumina electroformed brick. Alumina electroformed bricks have good thermal conductivity and are resistant to thermal deterioration, so they are suitable for use as partition members.

(9) In any of the configurations (1) to (8) above, it is preferable that the bottom of the feeder be provided with a bushing for forming the molten glass into glass fibers.

(10) In a method for manufacturing a glass article comprising a step of circulating molten glass inside a feeder, an electric heating element for heating the molten glass is provided in the feeder, and a first space in which the molten glass is placed and the electric heating element are provided. The present invention is characterized by the provision of a partition member that completely partitions the space from the second space in which the space is located. According to such a configuration, the same effects as the above-described corresponding configuration can be obtained.

1 Glass article manufacturing equipment 2 Melting furnace 3 Feeder 4 Bushing 5 Electric heating element 6 Partition plate (partition member)
Gr Glass raw material Gm Molten glass Gf Glass fiber S1 First space S2 Second space X Flow direction Y Width direction

Claims (8)

In a feeder that circulates molten glass inside,
comprising an electric heating element that heats the molten glass, and a partition plate that partitions a first space where the molten glass is placed and a second space where the electric heating element is placed,
The electric heating element is an elongated body whose longitudinal direction is along the upper surface of the partition plate ,
The electric heating element is spaced upward from the partition plate ,
A plurality of supports that contact the electric heating element and the partition plate are arranged between the electric heating element and the partition plate at intervals in the longitudinal direction of the electric heating element. A feeder featuring: The feeder according to claim 1, wherein the electric heating element extends along a width direction perpendicular to a flow direction of the molten glass. The feeder according to claim 1 or 2, wherein the second space is continuous so as to cover the entire width of the molten glass in a width direction perpendicular to the flow direction of the molten glass. 4. The feeder according to claim 3, wherein the electric heating element is disposed directly above both widthwise ends of the molten glass and directly above the widthwise center of the molten glass. The feeder according to any one of claims 1 to 4, wherein the second space is divided into a plurality of parts in the flow direction of the molten glass. The feeder according to any one of claims 1 to 5, wherein the partition plate is made of alumina electroformed brick. The feeder according to any one of claims 1 to 6, characterized in that the bottom of the feeder is provided with a bushing for forming the molten glass into glass fibers. In a method for manufacturing a glass article comprising a distribution step of distributing molten glass inside a feeder,
The feeder is provided with an electric heating element that heats the molten glass, and a partition plate is provided that partitions a first space where the molten glass is placed and a second space where the electric heating element is placed,
The electric heating element is an elongated body whose longitudinal direction is along the upper surface of the partition plate ,
The electric heating element is spaced upward from the partition plate ,
A plurality of supports that contact the electric heating element and the partition plate are arranged between the electric heating element and the partition plate at intervals in the longitudinal direction of the electric heating element. A method for manufacturing a glass article characterized by: