JP2023011679A - Feeder and manufacturing method of glass article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly prevent defects from occurring in a glass article.

SOLUTION: A feeder 3 in which molten glass Gm flows is equipped with: an electric heating element 5 for heating the molten glass Gm; and a partition plate 6 for partitioning a first space S1 where the molten glass Gm is disposed and a second space S2 where the electric heating element 5 is arranged. The electric heating element 5 is arranged so that its longitudinal direction Y is along the partition plate 6. The electric heating element 5 is distant upward from the partition plate 6. A plurality of support bodies 7 that come into contact with the electric heating element 5 and the partition plate 6 are arranged between the electric heating element 5 and the partition plate 6, at intervals in the longitudinal direction Y of the electric heating element 5.

SELECTED DRAWING: Figure 4B

COPYRIGHT: (C)2023,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a feeder for circulating molten glass therein and a method for manufacturing glass articles using the feeder.

For example, when molten glass is supplied to a bushing for molding glass fiber or a molded body for molding sheet glass, the molten glass flowing inside the feeder is kept warm to prevent excessive temperature drop. There is a need. As a method for this purpose, a method has been widely adopted in which a burner for burning a mixture of fuel such as natural gas and air (oxygen) is arranged in the inner space of the feeder, and the heat from the burner heats the molten glass. (See Patent Document 1).

By the way, in the case of the method of heating using a burner, (1) the heat of the burner easily volatilizes the environmentally hazardous substances contained in the molten glass, such as boron oxide (B ₂ O ₃ ), and (2) the combustion of the burner. The oxidation-reduction atmosphere in the internal space is likely to fluctuate depending on the state, and reboil bubbles are likely to occur in the molten glass. There is a risk that defects such as defects (foreign matter) may occur in the article.

Therefore, for example, Patent Document 2 discloses a method of arranging an electric heating element in place of the burner in the inner space of the feeder and heating the molten glass by the heat of the electric heating element. Specifically, in the same document, in order to equalize the temperature distribution of the molten glass flowing inside the feeder, a direct It is disclosed to provide a restriction to limit the heat transfer of the . As a result, the direct heat transfer from the electric heating element to the molten glass is restricted, and the heat transfer path bypassing the restriction section to reach the surface of the molten glass and the heat from the electric heating element heat the restriction section. After that, the heat from the electric heating element is transferred to the molten glass through two heat transfer paths leading to the surface of the molten glass as heat from the restricting portion.

Japanese Patent Publication No. 2010-513183 WO2014/185132

In the configuration disclosed in Patent Document 2, the space in which the electric heating element is arranged and the space in which the molten glass is arranged are in direct communication in the heat transfer path that bypasses the restriction portion and reaches the surface of the molten glass. . Therefore, when a part of the electric heating element is damaged due to a defect or the like, the damaged part may enter the molten glass via the communication part 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 scatter around due to the impact of the spark and be mixed into the molten glass. If such missing portions are mixed into the molten glass, it causes defects in the manufactured glass article.

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

(1) The present invention, which has been devised to solve the above problems, comprises an electric heating element for heating the molten glass, a first space in which the molten glass is arranged, and the electric heating element in a feeder for circulating molten glass therein. is arranged in the second space, the electric heating element is arranged in the second space so that its longitudinal direction is along the partition member, and the electric heating element is spaced upward from the partition member Between the electric heating element and the partition member, a plurality of support members contacting the electric heating element and the partition member are arranged at intervals in the longitudinal direction of the electric heating element. do.

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

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

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

(6) In any one of the configurations (1) to (5) above, it is preferable that the partition member is made of an alumina electroformed brick.

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

(8) The present invention, which has been devised to solve the above problems, is a method for manufacturing a glass article comprising a distribution step of distributing molten glass inside a feeder, wherein the feeder is provided with an electric heating element for heating the molten glass. In addition, a partition member is provided to partition the first space in which the molten glass is arranged and the second space in which the electric heating element is arranged, and the electric heating element is arranged so that its longitudinal direction is along the partition member, and the electric heating is performed. The body is spaced upwardly from the partition member, and between the electrical heating element and the partition member a plurality of supports contacting the electrical heating element and the partition member are spaced longitudinally of the electrical heating element. It is characterized by being placed side by side.

ADVANTAGE OF THE INVENTION According to this invention, the situation that a defect arises in a glass article by the heat generating element being damaged inside a feeder can be prevented reliably.

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

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described 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 fibers Gf as a glass article. A glass article manufacturing apparatus 1 includes a melting furnace 2 for melting a frit Gr to form a molten glass Gm, and a feeder 3 connected to the downstream side of the melting furnace 2 for circulating the molten glass Gm 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 refractory materials such as bricks.

At the upstream end of the melting furnace 2, an inlet 2a is provided for charging frit Gr, which is a mixture of silica sand, limestone, soda ash, cullet, etc., into the furnace. Raw material supply means (not shown) such as a screw feeder is arranged at the inlet 2a.

The melting furnace 2 is further provided with 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. The molten glass Gm is continuously formed by melting the frit Gr input from the input port 2a by heating with the heating means. The molten glass Gm flows into the feeder 3 from the downstream end of the melting furnace 2 . The melting furnace 2 may melt the frit Gr only by gas combustion or only by electric heating, or may melt by using both gas combustion and electric heating.

A plurality of bushings 4 made of platinum or a platinum alloy are provided on 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 flows molten glass Gm to form glass fibers Gf. The molten glass Gm flowing down from each nozzle is drawn downward and formed into glass fibers Gf (glass filaments) having a predetermined diameter. After that, a sizing agent is applied to the glass fibers Gf so that a plurality of the glass fibers Gf are bundled to form a glass strand.

That is, the method for manufacturing a glass article according to the present embodiment includes a melting step of melting the frit Gr in the melting furnace 2 to form the molten glass Gm, and and a forming step of forming glass fibers Gf by flowing molten glass Gm from a bushing nozzle provided on the bushing 4.

As shown in FIGS. 2 and 3, the feeder 3 includes an electric heating element 5 for heating and retaining the molten glass Gm, a first space S1 in which the molten glass Gm is arranged, and a second space S1 in which the electric heating element 5 is arranged. A partition plate 6, which is a partition member for completely partitioning the two spaces S2, is further provided. The molten glass Gm is indirectly heated through 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 heat from the partition plate 6 heats the molten glass Gm. be. In addition, the partition member is not limited to a plate shape, and 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 or the like. You can choose any shape you like. For example, it may be block-shaped.

According to such a configuration, the first space S1 and the second space S2 are independent spaces that do not have a communicating portion. However, the deficient part reliably stays within the second space S2. Therefore, when the electric heating element 5 is damaged or replaced, the damaged portion does not enter the first space S1 and mix into the molten glass Gm, so that high-quality glass fibers Gf with few defects can be molded. .

The second space S2 is continuous so as to cover the entire width of the molten glass Gm in the width direction Y orthogonal to the flow direction X of the molten glass Gm, and in the flow direction X, a beam that is a dividing member extending along the width direction Y 3b is divided into a plurality. In each second space S2, one or a plurality of (two in the illustrated example) electric heating elements 5 are housed sideways. In each second space S2, the heating temperature of the electric heating element 5 can be individually adjusted, 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's like In addition, the second space S2 may be divided into a plurality of parts in the width direction Y, and may not be divided into a plurality of parts in the flow direction X.

The electric heating element 5 is made of silicon carbide (SiC), for example, and is a resistance heating element that generates heat when energized. In this embodiment, the electric heating element 5 is a U-shaped member having a bent portion 5a and two straight portions 5b arranged in parallel via the bent portion 5a (see FIGS. 4A and 4B). is. Two straight portions 5 b of the electric heating element 5 are supported by a support block 3 c 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. As shown in FIG. That is, the U-shaped electric heating element 5 is arranged laterally along the width direction. Therefore, since the thickness of the electric heating element 5 in the vertical direction can be kept thin, the volume of the second space S2 can be reduced, and the 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 portion 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 (extraction work, etc.). can be easily implemented. The two linear 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 in the width direction of the molten glass Gm and directly above the central portion in the width direction of the molten glass Gm. Therefore, the entire width of the molten glass Gm can be uniformly heated, and variations in the temperature distribution of the molten glass Gm can be suppressed. In addition, the length of the electric heating element 5 in the width direction Y in the second space S2 can be appropriately adjusted according to 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 electric 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 pieces 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 that the partition plate 6 is less likely to bend.

The partition plate 6 is preferably made of an alumina electrocast brick. By doing so, the heat conduction of the partition plate 6 is improved, so that the partition plate 6 is efficiently heated. As a result, the heat from the partition plate 6 can easily heat the molten glass Gm. Moreover, since the partition plate 6 is less likely to be thermally deteriorated, the durability of the partition plate 6 is improved. In addition, the material of the partition plate 6 is not limited to the alumina electrocast brick, and may be, for example, a baked 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 so as to be spaced upward from the partition plate 6. As shown in FIGS. 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 of supporting the electric heating element 5 is not limited to this. The shape of the support 7 is not particularly limited, and may be, for example, a polygonal prism such as a quadrangular prism, or a circular cylinder. Alternatively, the support 7 may be, for example, a single plate-like body instead of being divided into a plurality of pieces. The material of the support 7 is not particularly limited as long as it is a refractory material.

A feeder according to another embodiment of the present invention will be described below. In addition, in the feeders according to other embodiments, the first space and the second space are completely partitioned by a partition plate in common, but the structure and the like are partially changed. In feeders according to other embodiments, constituent elements having the same function or shape as those of the feeder according to the first embodiment are denoted by the same reference numerals in the drawings for describing each embodiment. Redundant explanations are omitted.

(Second embodiment)
As shown in FIG. 5, the feeder 3 according to the second embodiment differs from the feeder according to the first embodiment in that the electric heating elements 5 arranged in the second space S2 are spaced apart in the width direction. However, a plurality (two in the illustrated example) are provided.

The electric heating elements 5 are arranged in the width direction of the second space S2, with a pair of electric heating elements 5 existing on both sides symmetrically with respect to the center as one set, and a plurality of sets along the flow direction X of the molten glass Gm. They are evenly spaced. Each of the electric heating elements 5 is U-shaped and attached to the upper portion of the inner peripheral wall of the feeder 3 . 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 feeder 3 according to the third to fifth embodiments differs from the feeder according to the second embodiment in that 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 vertically arranged 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 portion 3d on the inner peripheral wall of the feeder 3 to the upper portion, and the electric heating element 5 extends along the width direction. are 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 portion 3d on the inner peripheral wall of the feeder 3 to the upper portion, and the electric heating element 5 is moved along the flow direction. are arranged vertically.

In the present invention, the orientation and mounting position of the electric heating element 5 are not particularly limited. It is preferably arranged laterally (preferably on a horizontal plane).

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

A portion 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 ends of the bank portions 3e on both sides in the width direction. The projecting dimension of the bank portion 3e is set to be longer than the widthwise dimension of the electric heating element 5, so that the electric heating element 5 is completely accommodated in the recess C. As shown in FIG. In this embodiment, the U-shaped electric heating element 5 is attached to the upper portion of the inner peripheral wall of the feeder 3 and arranged vertically along the width direction.

(Seventh embodiment)
As shown in FIG. 10, the feeder 3 according to the seventh embodiment differs from the feeder according to the first embodiment in that the feeder 3 has a passage P between the upper portion and the side portion 3d of the inner peripheral wall of the feeder 3. and that an expansion 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 ends of the 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 accommodated in the upper part thereof. In this embodiment, the U-shaped electric heating element 5 is attached to the upper portion of the inner peripheral wall of the feeder 3 and arranged vertically along the width direction.

As explained in the seventh embodiment, in the present invention, the electric heating element 5 may be arranged at a position other than directly above the molten glass Gm as long as the molten glass Gm can be heated.

(Eighth embodiment)
As shown in FIG. 11, the feeder 3 according to the eighth embodiment differs from the feeder according to the seventh embodiment in the number of electric heating elements and their mounting positions.

In the feeder 3 according to the eighth embodiment, the mounting position of the electric heating element 5 is changed from the upper portion 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 sets each including a pair of electric heating elements 5 are vertically arranged in the expansion space Sa. are evenly spaced.

(Ninth embodiment)
As shown in FIG. 12, the feeder 3 according to the ninth embodiment differs from the feeder according to the first embodiment in that the number of electric heating elements 5 is only one, and this The difference is that the periphery (lower side and both sides) of the electric heating element 5 is surrounded by the partition plate 6 .

The electric heating element 5 is attached to the upper part of the inner peripheral wall of the feeder 3 at the center in the width direction, and a plurality of the electric heating elements 5 are arranged along the flow direction of the molten glass G at regular intervals. The partition plate 6 has 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 formed by partitioning.

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

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

In addition, the present invention is not limited to the configuration of the above-described embodiment, nor is it limited to the above-described effects. Various modifications can be made to the present invention without departing from the gist of the present invention.

In the above embodiment, the feeder feeds the molten glass to the bushing for molding the glass fiber, but it is not limited to this. For example, the feeder may be in a mode of supplying molten glass to a molded body for molding glass articles such as tube glass and plate glass (including glass rolls).

In the above embodiments, the case where the electric heating element is U-shaped or rod-shaped (linear) has been described, but the shape of the electric heating element is not limited to this. For example, an arbitrary shape such as a U-shape (a shape in which the ends of a heating element extending in parallel are connected to each other by a heating element extending vertically so that the angle of the connecting portion is 90°) or a meandering shape. can be adopted, but a shape that can be planarly heated is preferable.

In the above embodiment, the case where the entire width of the molten glass is heated by one electric heating element extending along the width direction from the side wall on one side of the feeder has been described, but the arrangement of the electric heating elements is not limited to this. . For example, a plurality of electric heating elements may be used to heat the entire width of the molten glass. More specifically, a pair of electric heating elements may be extended symmetrically with respect to the center in the width direction from both sides in the width direction to heat the entire width of the molten glass. However, even in this case, at least one of the pair of electric heating elements, or an electric heating element different from the pair of electric heating elements, is preferably arranged immediately above the central portion in the width direction of the molten glass. .

The present 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 separates the first space in which the molten glass is arranged and the second space in which the electric heating element is arranged. and According to such a configuration, the first space in which the molten glass is arranged and the second space in which the electric heating element is arranged are completely separated by the partition member, so that they are independent spaces. Therefore, even if a part of the electric heating element is damaged by a spark or the like, the damaged part surely stays in the second space and does not mix with 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 heat from the partition member heats the molten glass. That is, the molten glass is indirectly heated through the partition member.

(2) In the configuration of (1) above, it is preferable that at least part of the electric heating element is arranged 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 horizontally arranged in the second space. With this configuration, the volume of the second space that accommodates the electric heating element can be reduced, so heat loss in the second space is reduced. Therefore, it is possible to efficiently heat the molten glass while suppressing the electric 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 flowing 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 side space of the feeder has a lower temperature than the upper space, and often has extra space. Therefore, the replacement work of the electric heating element is simplified compared to the case where the replacement work of the electric heating element is performed using the upper space of the feeder. If the electric heating element extends in the flow direction of the molten glass or in the vertical direction, it is often necessary to use the upper space of the feeder to replace the electric heating element.

(5) In any one 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 orthogonal 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, when the second space is continuous so as to cover the entire width of the molten glass, the heat from the partition member provided at the position corresponding to the second space facilitates uniform heating of the entire width of the molten glass. As a result, the temperature distribution of the molten glass flowing inside the feeder is made uniform, so that high-quality glass articles can be produced from the molten glass.

(6) In the configuration of (5) above, it is preferable that the electric heating elements are arranged directly above both ends in the width direction of the molten glass and directly above the central portion in the width direction of the molten glass. In this way, the partition member is heated more quickly and uniformly in the width direction, so that the heat from the partition member can more uniformly heat the entire width of the molten glass.

(7) In any one of the configurations (1) to (6) above, the second space may be divided into a plurality of sections in the flow direction of the molten glass. By doing so, the temperature distribution in the flow direction of the molten glass can be managed in a plurality of zones, so that 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 made of an alumina electroformed brick. Alumina electrocast bricks are suitable as partition members because they have good thermal conductivity and are resistant to heat deterioration.

(9) In any one of the configurations (1) to (8) above, it is preferable that the bottom of the feeder is 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, the feeder is provided with an electric heating element for heating the molten glass, and the first space in which the molten glass is placed and the electric heating element is provided with a partition member that completely partitions the second space in which the is arranged. According to such a configuration, it is possible to obtain the same effect as the corresponding configuration described above.

1 Glass Article Manufacturing Apparatus 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,
An electric heating element for heating the molten glass, and a partition member for partitioning a first space in which the molten glass is arranged and a second space in which the electric heating element is arranged,
The electric heating element is arranged such that its longitudinal direction is along the partition member,
The electric heating element is spaced upward from the partition member,
Between the electric heating element and the partition member, a plurality of support members contacting the electric heating element and the partition member are arranged at intervals in the longitudinal direction of the electric heating element. A feeder characterized by 2. The feeder according to claim 1, wherein said electric heating element extends along the width direction orthogonal to the flowing direction of said molten glass. 3. The feeder according to claim 1 or 2, wherein the second space is continuous in the width direction orthogonal to the flowing direction of the molten glass so as to cover the entire width of the molten glass. 4. The feeder according to claim 3, wherein the electric heating elements are arranged directly above both ends in the width direction of the molten glass and directly above the central portion in the width direction 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 sections in the flow direction of the molten glass. The feeder according to any one of claims 1 to 5, wherein the partition member is made of an alumina electrocast brick. A feeder according to any one of claims 1 to 6, characterized in that the bottom of the feeder is provided with bushings for shaping 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,
An electric heating element for heating the molten glass is provided in the feeder, and a partition member is provided for partitioning a first space in which the molten glass is arranged and a second space in which the electric heating element is arranged,
The electric heating element is arranged such that its longitudinal direction is along the partition member,
The electric heating element is spaced upward from the partition member,
Between the electric heating element and the partition member, a plurality of support members contacting the electric heating element and the partition member are arranged at intervals in the longitudinal direction of the electric heating element. A method for producing a glass article, characterized by:

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