Powder loading device

Abstract

The present invention provides a powder mounting device that can maintain a constant position at the mounting edge of the powder over a long period of time and can keep the mounting thickness of the powder constant. [Solution] A powder placement device for placing powder on a substrate to a predetermined thickness and width, comprising: a conveying unit for conveying the substrate; a strip-shaped object forming unit for forming a powder strip of a predetermined thickness and width and transferring the powder strip onto the substrate; a supply unit for supplying powder onto the strip-shaped object forming unit; and a thickness-defining unit installed closer to the transfer position to the substrate than the supply unit and defining the thickness of the powder strip, wherein the thickness-defining unit is provided with a roll extending in the width direction of the powder strip at a predetermined distance from the strip-shaped object forming unit, and two strip-shaped guide sections are installed on the roll separated by a predetermined width in the longitudinal direction, the guide sections are approximately the same thickness as the predetermined thickness and are wound around the roll so as to embrace it, and move in the longitudinal direction of the strip of the guide section while powder is being placed on the substrate.

Description

Technical Field

[0001] The present invention relates to a powder placement device.

Background Art

[0002] The demand for electrochemical devices such as lithium-ion secondary batteries and electric double-layer capacitors, which have a high energy density, can be charged and discharged multiple times, and are small and lightweight, is expanding. Lithium-ion secondary batteries have a large energy density and are used in fields such as mobile phones and notebook personal computers, and electric double-layer capacitors can be rapidly charged and discharged and are used as small power sources for memory backup in personal computers and the like. With the expansion and development of the applications of these electrochemical devices, further performance improvements such as lower resistance and larger capacity are required.

[0003] The electrodes of such electrochemical devices can be obtained as electrode sheets. For example, powder compression molding is performed to produce a sheet-shaped molded product such as an electrode sheet from a powder containing an electrode active material.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 discloses a first embodiment and a configuration in which powder placed on a substrate is rolled between two rolls, as shown in Figures 1 and 2. In this embodiment, a ribbon-shaped film is laid on the upper surface of both ends of the substrate to prevent powder from getting caught in the parts where the film is laid. This is to prevent wrinkles and discoloration of the substrate by not applying pressure to both ends of the substrate. As shown in Figure 1, the substrate 16 is placed on roll 4A, and the film 12 is laid on top of it. Since there is a gap between the other opposing roll 4B and the film 12, powder can get on the film, which increases the width of the powder during rolling. Furthermore, the film wears down due to friction with the rolls, causing the position and thickness of the edges in the width direction of the powder to fluctuate.

[0006] The present invention has been made in view of the above, and its object is to provide a powder placement device that can define the placement edge of the powder at a constant position over a long period of time and maintain a constant thickness of the powder. [Means for solving the problem]

[0007] The first powder placement apparatus of the present invention is a powder placement apparatus for placing powder on a substrate to a predetermined thickness and width, comprising: a conveying section for conveying the substrate; a strip-shaped material forming section for forming a powder strip of the predetermined thickness and width and transferring the powder strip onto the substrate; a supply section for supplying the powder onto the strip-shaped material forming section; and a thickness defining section installed closer to the transfer position to the substrate than the supply section and defining the thickness of the powder strip, wherein the thickness defining section is spaced at a predetermined distance from the strip-shaped material forming section. The device includes a roll positioned across from the supply unit and extending in the width direction of the powder strip, intersecting the direction toward the transfer position from the supply unit to the substrate. The roll has two strip-shaped guide sections spaced apart by a predetermined width in the longitudinal direction. The guide sections have approximately the same thickness as the predetermined spacing, and the roll is wound around the guide section so as to embrace it in at least the portion facing the strip-forming unit. The guide sections move in the longitudinal direction of the strip while the powder is continuously placed on the substrate. The statement that the guide sections have approximately the same thickness as the predetermined spacing does not mean that they are exactly the same thickness, but rather that they are a thickness that achieves the effect of the invention considering measurement errors, etc. Furthermore, the statement that the guide sections move in the longitudinal direction of the strip while the powder is continuously placed on the substrate means that the portion of the guide section facing the strip-forming unit changes over time as it moves in the longitudinal direction of the strip.

[0008] The strip-forming unit moves in a direction toward the transfer position from the supply unit to the substrate, and the roll rotates in the same direction as the movement direction of the strip-forming unit, and the rotation speed may be greater than the movement speed of the strip-forming unit.

[0009] The roll is further provided with a strip-shaped intermediate guide portion between the two guide portions, the intermediate guide portion having a thickness approximately the same as the predetermined interval, and the intermediate guide portion is wound around the roll so as to embrace it in at least the portion facing the strip-shaped forming portion, and may move in the longitudinal direction of the strip of the intermediate guide portion while the powder is continuously placed on the substrate.

[0010] The second powder placement device of the present invention is a powder placement device for placing powder on a substrate to a predetermined thickness and width, comprising: a conveying unit for conveying the substrate; a supplying unit for supplying the powder onto the substrate; and a thickness defining unit installed on the side of the substrate's conveying direction relative to the supplying unit, for defining the thickness of the powder on the substrate, wherein the thickness defining unit is provided with a roll positioned at a predetermined distance from the substrate and extending in the width direction of the substrate intersecting the conveying direction, and the roll has two strip-shaped guide sections positioned at a predetermined width distance apart in the direction of the predetermined width, the guide sections have a thickness approximately the same as the predetermined distance, and the roll is wound around the guide section so as to embrace the roll at least in the portion facing the substrate, and the guide sections move in the longitudinal direction of the strip while the powder is continuously placed on the substrate. The statement that the guide sections have a thickness approximately the same as the predetermined distance does not mean that they are exactly the same thickness, but rather that they are a thickness that achieves the effect of the invention considering measurement errors, etc. Furthermore, the statement that the guide part moves in the longitudinal direction of the strip while it continues to place powder on the substrate means that the part of the guide part facing the substrate changes over time as it moves in the longitudinal direction of the strip.

[0011] The roll rotates in the same direction as the conveying direction, and its rotational speed may be greater than the conveying speed of the substrate.

[0012] The roll is further provided with a strip-shaped intermediate guide portion between the two guide portions, the intermediate guide portion having a thickness approximately the same as the predetermined interval, and the intermediate guide portion is wound around the roll so as to embrace the roll at least in the portion facing the substrate, and may move in the longitudinal direction of the strip of the intermediate guide portion while the powder is continuously placed on the substrate. [Effects of the Invention]

[0013] The width and thickness of the powder are defined by a roll. The width of the powder is defined by a strip-shaped guide installed on the roll. Since the guide moves in the longitudinal direction of the strip, the position of the end of the powder in the width direction can be kept at the same position, and the thickness of the powder can be kept constant. In addition, wear of the guide can be prevented, and the thickness of the guide can be kept constant over a long period of time. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic side view of a powder placement device according to an embodiment. [Figure 2] Figure 1 is a schematic plan view of the powder loading device as seen from above. [Figure 3] This is a schematic side view of a powder placement device according to another embodiment. [Figure 4] This is a schematic plan view of a powder placement apparatus according to another embodiment. [Figure 5] This is a schematic side view of a powder loading apparatus according to a different embodiment. [Figure 6] Figure 5 is a schematic plan view of the powder loading device as seen from above. [Figure 7] This is a schematic side view of a powder placement device according to yet another embodiment. [Figure 8] This is a schematic plan view of a powder placement apparatus according to another embodiment. [Modes for carrying out the invention]

[0015] Embodiments of the present invention will be described in detail below with reference to the drawings. The following description of preferred embodiments is essentially illustrative and is not intended to limit the present invention, its applications, or its uses.

[0016] (Embodiment 1) As shown in FIGS. 1 and 2, the powder placement device according to Embodiment 1 transfers and places a sheet-like powder (powder strip) 81 having a predetermined thickness and a predetermined width placed on a transfer roll (belt-like material forming portion) 10 onto a base material 100 conveyed by a backup roll (transport portion) 20. In the drawings, powders 80, sheet-like powders 81, and powder layers 82 are hatched so that they can be distinguished at a glance. Thereby, a base material with a powder layer 82 provided thereon is formed on the base material 100. Examples of the powder 80 include a powder in which at least a part of the surface of the electrode active material of a secondary battery is coated with a non-aqueous binder. In that case, the base material 100 can be, for example, a metal foil.

[0017] The transfer roll 10 rotates counterclockwise in FIG. 1, and the backup roll 20 rotates clockwise. The powder 80 is supplied and placed onto the transfer roll 10 from a hopper (supply portion) 200 near the apex of the transfer roll 10. The powder 80 is preferably supplied so that its thickness is greater than that of the sheet-like powder 81 on the transfer roll 10 and its width is approximately the same.

[0018] The powder 80 is carried by the transfer roll 10 toward the base material 100, and on the way, it is leveled to a predetermined thickness by a squeegee roll 30 so that the thickness is uniform in the width direction and the rotation direction of the transfer roll 10. The squeegee roll 30 is installed between the hopper 200 and the position where the sheet-like powder 81 is transferred to the base material 100. And the squeegee roll 30 extends in a direction intersecting the rotation direction (the traveling direction of the powder 80) of the transfer roll 十 and in the width direction of the sheet-like powder 81. Also, the squeegee roll 30 and the transfer roll 10 face each other with a predetermined interval that is the same as the predetermined thickness, and this interval is constant in the length direction of the squeegee roll 30.

[0019] At both ends in the longitudinal direction of the squeegee roll 30 (the width direction of the sheet-like powder 81), strip-shaped sheets 40 as guide portions are respectively wound around the squeegee roll 30 for one turn in the circumferential direction and attached. The squeegee roll 30 and the strip-shaped sheets 40 constitute a thickness defining portion. The strip-shaped sheet 40 is in contact with the transfer roll 10, and a gap (powder passage space) having the thickness of the strip-shaped sheet 40 is formed between the squeegee roll 30 and the transfer roll 10 between the two strip-shaped sheets 40, 40. The strip-shaped sheet 40 is made of, for example, plastic. The distance between the opposing ends of the two strip-shaped sheets 40, 40 is the same as the predetermined width of the sheet-like powder 81. Since the thickness of the strip-shaped sheet 40 determines the distance between the squeegee roll 30 and the transfer roll 10, the thickness of the strip-shaped sheet 40 becomes substantially the same as the predetermined thickness of the sheet-like powder 81. Being substantially the same thickness means that it does not become the same thickness in a strict sense considering thickness unevenness of the strip-shaped sheet 40 and the sheet-like powder 81, measurement errors, etc.

[0020] Since the strip-shaped sheets 40, 40 are installed on the squeegee roll 30 with the above-described configuration, the powder 80 supplied from the hopper 200 passes through the powder passage space, and at that time, the width and thickness of the powder 80 are defined by the width and thickness of the powder passage space, and the sheet-like powder 81 is formed. That is, the width and thickness of the sheet-like powder 81 are determined by the thickness and attachment position of the strip-shaped sheets 40, 40. Since the strip-shaped sheets 40, 40 are in contact with the transfer roll 10, no powder 80 is placed on the transfer roll 10 at the contact portion, and the width of the sheet-like powder 81 can be maintained at a predetermined width. Since there is no powder 80 placed so as to protrude from the predetermined width, the powder is not wasted, and the powder placement end portion can be continuously defined at a determined position.

[0021] In Figure 1, the squeegee roll 30 rotates clockwise, and at a position opposite the transfer roll 10, the squeegee roll 30 rotates in the direction in which the transfer roll 10 is advancing. Furthermore, the peripheral speed of the squeegee roll 30 is greater than the peripheral speed of the transfer roll. This relationship between the squeegee roll 30 and the transfer roll 10 allows the powder 80 to be compressed appropriately, maintaining a constant powder density in the sheet-like powder 81 over time, and suppressing variations in powder density in the width direction. As a result, the powder density, or in other words, the powder weight per unit area, in the sheet-like powder 81 can be kept uniform at all locations in both the width and length directions. In addition, the increased powder density of the sheet-like powder 81 prevents it from becoming too rigid and collapsing before being transferred to the substrate 100.

[0022] The strip-shaped sheet 40 is wrapped around the squeegee roll 30 and rotates together with the squeegee roll 30. Therefore, the portion of the strip-shaped sheet 40 that contacts the transfer roll 10 moves over time, so that a different portion is always in contact. Consequently, wear on the strip-shaped sheet 40 due to contact with the transfer roll 30 does not concentrate on one part but wears down uniformly throughout, thereby suppressing a decrease in the thickness of the strip-shaped sheet 40 and reducing the frequency of replacement of the strip-shaped sheet 40. If the thickness of the strip-shaped sheet 40 decreases, the thickness of the sheet-like powder 81 will become smaller than a predetermined thickness, so in this embodiment, it is possible to prevent a decrease in the thickness of the sheet-like powder 81 due to wear on the strip-shaped sheet 40.

[0023] In this embodiment, when it is desired to change the thickness of the sheet-like powder 81, this can be done simply by changing the thickness of the strip-shaped sheet 40, thus shortening the modification time in the process and keeping modification costs low. Similarly, when it is desired to change the width of the sheet-like powder 81, this can be done simply by changing the distance between the two strip-shaped sheets 40, 40, thus shortening the modification time in the process and keeping modification costs low.

[0024] (Embodiment 2) The powder placement device according to Embodiment 2 differs from Embodiment 1 in the configuration of the strip-shaped sheet and its movement structure, but is otherwise the same as Embodiment 1. Therefore, a description of the configuration and structure that differs from Embodiment 1 will be provided.

[0025] Figure 3 is a schematic side view of the powder loading device according to Embodiment 2. In this embodiment, the strip-shaped sheet 42 is made of the same material as the strip-shaped sheet 40 of Embodiment 1. At the portion of the squeegee roll 30 facing the transfer roll 10, it is wrapped around the squeegee roll 30 for about half of its lower circumference, embracing the squeegee roll 30. From there, it separates from the squeegee roll 30 and extends upward, wrapping around the upper side of the upper support roll 32 for about half of its circumference. The upper support roll 32 rotates clockwise, just like the squeegee roll 30, and its peripheral speed is the same as that of the squeegee roll 30, moving the strip-shaped roll 42 in the longitudinal direction of its strip. As a result, similar to Embodiment 1, wear on the strip-shaped sheet 42 is not concentrated in one part but is worn uniformly across the entire surface, thereby suppressing a decrease in the thickness of the strip-shaped sheet 42. Furthermore, since the strip-shaped sheet 42 is longer than the strip-shaped sheet 40 of Embodiment 1, the rate of thickness reduction due to wear is smaller than in Embodiment 1, and the frequency of replacement of the strip-shaped sheet 42 can be further reduced. The other effects of Embodiment 1 are similarly achieved in this embodiment.

[0026] (Embodiment 3) The powder placement apparatus according to Embodiment 3 differs from Embodiment 1 in that an intermediate strip-shaped sheet (intermediate guide section) 44 is installed in the central part of the length direction of the squeegee roll 30, as shown in Figure 4. Otherwise, it is the same as Embodiment 1, so a description of the configuration and structure that differs from Embodiment 1 will be provided.

[0027] Figure 4 is a schematic top view of the powder placement device according to Embodiment 3. The intermediate strip-shaped sheet 44 is wrapped around the center of the squeegee roll 30 in the longitudinal direction. The intermediate strip-shaped sheet 44 is made of the same material and has the same thickness as the strip-shaped sheet 40 at the end. Since the powder 80 is excluded from the transfer roll 10 and does not accumulate in the area where the intermediate strip-shaped sheet 44 is installed, the sheet-like powder 81 is divided into two strips. The width of the intermediate strip-shaped sheet 44 is determined by the specifications, based on the width of the central part where the powder 80 does not accumulate, so it should be done accordingly.

[0028] The powder placement apparatus according to Embodiment 3 can produce powder-coated substrates, in which a powder layer 82 is provided on two strip-shaped substrates 100, in a single process, thereby reducing manufacturing costs. Furthermore, the effects of Embodiment 1 are similarly achieved in this embodiment.

[0029] (Embodiment 4) The powder placement device according to Embodiment 4, as shown in Figures 5 and 6, is a device in which the base material 100 is conveyed to the right side of the figure by conveying rolls (conveying sections) 51, 52, and 53. First, powder 80 is placed directly onto the base material 100 from the hopper 200. Then, the powder 80 is transformed into a sheet-like powder 81 of a predetermined thickness and width on the base material 100 by a squeegee roll 31, which is a thickness-defining section with the same configuration and structure as Embodiment 1, and two strip-shaped sheets 41, 41 that are wrapped around both ends of the squeegee roll 31 and installed thereon. The strip-shaped sheets 41 are made of the same material and have the same configuration as the strip-shaped sheet 40 of Embodiment 1. Furthermore, the sheet-like powder 81 is compressed into a powder layer 85 by a compression roll 60.

[0030] Similar to Embodiment 1, hatching is applied to the powder 80, sheet-like powder 81, and compressed powder layer 85 in the drawings to facilitate explanation. This forms a powder-coated substrate with a compressed powder layer 85 on the substrate 100. As for the powder 80, as in Embodiment 1, for example, a mixture of electrode active material and binder for a secondary battery can be used. In that case, the substrate 100 can be, for example, metal foil. The following explanation will focus on the differences from Embodiment 1, and some of the same configurations and structures as in Embodiment 1 may be omitted.

[0031] First, powder 80 is supplied to the base material 100 from the hopper 200 and placed on top. When the powder 80 is placed on the base material 100, it is preferable that it is supplied in such a way that it is thicker than the sheet-like powder 81 but has approximately the same width.

[0032] The powder 80 is carried toward the compression roll 60 by the base material 100, but along the way it is leveled to a predetermined thickness by the squeegee roll 31 so that the thickness is uniform in the width direction and the direction of travel, and the width is also defined to a predetermined width by the strip-shaped sheets 41, 41. The squeegee roll 31 is in a direction that intersects the conveying direction of the base material 100 and extends in the width direction of the sheet-like powder 81. The squeegee roll 31 and the base material 100 face each other with a predetermined distance that is the same length as the predetermined thickness, and this distance is constant in the length direction of the squeegee roll 31.

[0033] In Figure 5, the squeegee roll 31 rotates counterclockwise, and at the position facing the substrate 100, the squeegee roll 31 rotates in the direction in which the substrate 100 is advancing. Furthermore, the peripheral speed of the squeegee roll 31 is greater than the advancing speed of the substrate 100. Due to this relationship between the squeegee roll 31 and the substrate 100, the powder 80 is compressed appropriately, similar to Embodiment 1, and the powder density of the sheet-like powder 81 can be kept constant over time, while variations in powder density in the width direction can be suppressed. In addition, the strip-shaped sheet 41 rotates together with the squeegee roll 31, and its rotation direction and peripheral speed are the same as those of the squeegee roll 31.

[0034] Embodiment 4 achieves the same effects as Embodiment 1.

[0035] (Embodiment 5) The powder placement device according to Embodiment 5 differs from Embodiment 4 in the configuration of the strip-shaped sheet and its movement structure, but is otherwise the same as Embodiment 4. Therefore, a description of the configuration and structure that differs from Embodiment 4 will be provided.

[0036] Figure 7 is a schematic side view of the powder loading device according to Embodiment 5. In this embodiment, the strip-shaped sheet 43 is wrapped around the squeegee roll 31 for approximately half a turn on the lower side, embracing the squeegee roll 31 in the portion facing the base material 100, and then extends upward away from the squeegee roll 31, wrapping around the upper side of the upper support roll 33 for approximately half a turn. The strip-shaped sheet 43 has the same material and configuration as Embodiment 2. The upper support roll 33 rotates counterclockwise, just like the squeegee roll 31, and its peripheral speed is also the same as that of the squeegee roll 31, moving the strip-shaped roll 43 in the longitudinal direction of its strip. As a result, similar to Embodiments 1 and 4, wear on the strip-shaped sheet 43 is not concentrated in one part but is worn uniformly across the entire surface, thereby suppressing a decrease in the thickness of the strip-shaped sheet 43. Furthermore, since the strip-shaped sheet 43 is longer than the strip-shaped roll 41 in Embodiment 4, the rate of thickness reduction due to wear is smaller than in Embodiment 4, and the frequency of replacement of the strip-shaped sheet 43 can be further reduced. The other effects of Embodiment 4 are similarly achieved in this embodiment.

[0037] (Embodiment 6) The powder placement apparatus according to Embodiment 6 differs from Embodiment 4 in that, as shown in Figure 8, two intermediate strip-shaped sheets (intermediate guide sections) 45, 45 are installed in the central part of the length direction of the squeegee roll 31. Otherwise, it is the same as Embodiment 4, so a description of the configuration and structure that differs from Embodiment 4 will be provided.

[0038] Figure 8 is a schematic top view of the powder placement device according to Embodiment 6. The intermediate strip-shaped sheets 45, 45 are wrapped around the central part of the squeegee roll 31 in the longitudinal direction of Embodiment 4, dividing the space between the two strip-shaped sheets 41, 41 into three equal parts. The intermediate strip-shaped sheet 45 is made of the same material and has the same thickness as the end-side strip-shaped sheets 41. Since the powder 80 is excluded from the base material 100 and does not rest on the area where the intermediate strip-shaped sheet 45 is installed, it is divided into three strip-shaped sheet-like powder layers 81a, 81b, and 81c. The compressed powder layers 85a, 85b, and 85c are also divided into three parts. The width of the intermediate strip-shaped sheet 45 is determined by the specifications, based on the width of the central part where the powder 80 is not present, so it should be done accordingly.

[0039] The powder placement apparatus according to Embodiment 6 can produce a powder-coated substrate having three strip-shaped compressed powder layers 85a, 85b, and 85c on the substrate 100 in a single process, thereby reducing manufacturing costs. Furthermore, the effects of Embodiment 4 are similarly achieved in this embodiment.

[0040] (Other embodiments) The embodiments described above are illustrative examples of the present invention, and the present invention is not limited to these examples. These examples may be combined with or partially replaced with well-known, conventional, or prior art. Modified inventions that would be easily conceived by a person skilled in the art are also included in the present invention.

[0041] The powder is not limited to a mixture of electrode active material and binder for secondary batteries; it can be any powder that is configured to be transferred in a strip-like manner to the surface of various substrates. Furthermore, the substrate is not limited to metal foil; it may be a sheet-like material made of organic, inorganic, or composite materials thereof, or it may be in a shape other than a sheet, such as a plate.

[0042] The material of the strip-shaped sheet is not limited to plastic; it may also be metal, inorganic material, or a composite material made up of multiple materials.

[0043] The number of intermediate strip-shaped sheets installed on a single squeegee roll is not limited to one or two, but may be three or more. [Explanation of Symbols]

[0044] 10 Transfer roll (strip-shaped material forming section) 20 Backup roll (transport section) 30, 31 Squeegee Roll (Roll) 40, 41 Strip-shaped sheet (guide section) 42,43 Strip-shaped sheet (guide section) 44,45 Intermediate strip-shaped sheet (intermediate guide section) 51, 52, 53 Conveyor rolls (conveyor section) 80 powder 100 substrate

Claims

1. A powder placement device that places powder on a substrate to a predetermined thickness and width, A conveying unit for conveying the aforementioned substrate, A strip-shaped material forming section is formed in which a powder strip of the predetermined thickness and width is formed, and the powder is placed on the substrate by transferring the powder strip onto the substrate. A supply unit for supplying the powder onto the strip-shaped material forming unit, A thickness defining section is installed closer to the transfer position to the substrate than the supply section, and defines the thickness of the powder strip. It has, The thickness-defining section is positioned at a predetermined distance from the strip-forming section and includes a roll that extends in the width direction of the powder strip, intersecting the direction toward the transfer position from the supply section to the substrate. The roll has two strip-shaped guide sections installed along its length, separated by a predetermined width. A powder loading device wherein the guide portion has a thickness approximately the same as the predetermined interval, the roll is wound around the guide so as to embrace the roll at least in the portion facing the strip-shaped forming portion, and the guide portion moves in the longitudinal direction of the strip while the powder is continuously placed on the substrate.

2. A powder placement device that places powder on a substrate to a predetermined thickness and width, A conveying unit for conveying the aforementioned substrate, A supply unit that supplies the powder onto the substrate, A thickness defining section is installed on the side of the substrate that is traveling in the conveying direction, and defines the thickness of the powder on the substrate. It has, The thickness-defining section comprises a roll positioned at a predetermined distance from the substrate and extending in the width direction of the substrate, intersecting the conveying direction. The roll has two strip-shaped guide sections installed in the direction of the predetermined width, separated by a predetermined width interval. A powder loading device wherein the guide portion has a thickness approximately the same as the predetermined interval, and the roll is wound around the guide portion so as to embrace the roll in at least the portion facing the substrate, and the guide portion moves in the longitudinal direction of the strip while the powder is continuously placed on the substrate.

3. The powder loading apparatus according to claim 1, wherein the strip-forming section moves in a direction toward the transfer position from the supply section to the substrate, the roll rotates in the same direction as the movement direction of the strip-forming section, and the rotation speed is greater than the movement speed of the strip-forming section.

4. The powder loading apparatus according to claim 2, wherein the roll rotates in the same direction as the conveying direction, and its rotational speed is greater than the conveying speed of the substrate.

5. The roll has a strip-shaped intermediate guide section further installed between the two guide sections. The powder placement device according to claim 1, wherein the intermediate guide portion has a thickness substantially the same as the predetermined interval, and the roll is wound around the roll so as to embrace it in at least the portion facing the strip-shaped forming portion, and the intermediate guide portion moves in the longitudinal direction of the strip while the powder is continuously placed on the substrate.

6. The roll has a strip-shaped intermediate guide section further installed between the two guide sections. The powder loading device according to claim 2, wherein the intermediate guide portion has a thickness substantially the same as the predetermined interval, and the roll is wound around the roll so as to embrace it in at least the portion facing the substrate, and the intermediate guide portion moves in the longitudinal direction of the strip while the powder is continuously placed on the substrate.

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