WO2017158875A1 - Module de tête de buse et dispositif d'électrofilage - Google Patents

Module de tête de buse et dispositif d'électrofilage Download PDF

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Publication number
WO2017158875A1
WO2017158875A1 PCT/JP2016/075853 JP2016075853W WO2017158875A1 WO 2017158875 A1 WO2017158875 A1 WO 2017158875A1 JP 2016075853 W JP2016075853 W JP 2016075853W WO 2017158875 A1 WO2017158875 A1 WO 2017158875A1
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WIPO (PCT)
Prior art keywords
nozzle head
electrode
raw material
material liquid
nozzle
Prior art date
Application number
PCT/JP2016/075853
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English (en)
Japanese (ja)
Inventor
義英 中村
具道 中
浩秋 小林
八幡　浩
Original Assignee
株式会社 東芝
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 東芝 filed Critical 株式会社 東芝
Priority to CN201680011575.0A priority Critical patent/CN107429428B/zh
Priority to US15/460,565 priority patent/US20170268131A1/en
Publication of WO2017158875A1 publication Critical patent/WO2017158875A1/fr

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/04—Dry spinning methods
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning

Definitions

  • Embodiments of the present invention relate to a nozzle head module and an electrospinning apparatus.
  • an electrospinning apparatus that deposits fine fibers on the surface of a member by an electrospinning method (also referred to as an electrospinning method, a charge induction spinning method, or the like).
  • the electrospinning apparatus is provided with a nozzle head for discharging the raw material liquid.
  • the raw material liquid is sucked by an electrostatic force (Coulomb force) acting along an electric force line between the nozzle head and the collecting unit.
  • the solvent contained in the raw material liquid is volatilized to form a fiber, and the formed fiber is deposited on the collecting part and the member to form a deposit.
  • the fiber moves in the air by electrostatic force, it is difficult to control the fiber deposition state.
  • the problem to be solved by the present invention is to provide a nozzle head module and an electrospinning apparatus that facilitate the control of the fiber deposition state.
  • a nozzle head module has a hole for discharging a raw material liquid, and is configured to be applied with a voltage of a predetermined polarity.
  • the nozzle head module is relative to the nozzle head in a three-dimensional direction.
  • an electrode configured to be applied with a voltage having the same polarity as the voltage applied to the nozzle head.
  • FIG. 6 is a schematic diagram for illustrating another movement mode of the electrode 30.
  • FIG. 6 is a schematic diagram for illustrating another movement mode of the electrode 30.
  • FIG. 6 is a schematic diagram for illustrating an equipotential line 220 when the electrode 30 moves in a direction approaching the nozzle head 2.
  • 5 is a schematic diagram for illustrating an equipotential line 220 when the electrode 30 moves in a direction away from the nozzle head 2.
  • FIG. It is a schematic diagram for illustrating control of the position which deposits the fiber 200, and the deposition amount in a predetermined area
  • (A), (b) is a schematic diagram for demonstrating control of the orientation state of the deposited fiber 200.
  • FIG. (A), (b) is a schematic diagram for demonstrating control of the orientation state of the deposited fiber 200.
  • FIG. (A) to (d) are schematic views for illustrating the form of the deposit 210.
  • (A), (b) is a model perspective view for illustrating the counter electrode 37.
  • FIG. 1 is a schematic view for illustrating an electrospinning apparatus 100 according to the present embodiment.
  • 2 and 3 are schematic views for illustrating another movement mode of the electrode 30.
  • the electrospinning apparatus 100 includes a nozzle head module 1, a raw material liquid supply unit 4, a power supply 5, a collection unit 6, and a control unit 7.
  • the nozzle head module 1 includes a nozzle head 2 and an electric field control unit 3.
  • the nozzle head 2 has a hole for discharging the raw material liquid.
  • a hole for discharging the raw material liquid is provided inside the nozzle 20.
  • the nozzle 20 and the connection part 21 are not provided, and a hole for discharging the raw material liquid is provided in the main body part 22.
  • the nozzle head 2 which is a needle type nozzle head, has a nozzle 20, a connection part 21, and a main body part 22.
  • the nozzle 20 has a needle shape. Inside the nozzle 20, a hole for discharging the raw material liquid is provided. The hole for discharging the raw material liquid penetrates between the end portion of the nozzle 20 on the connection portion 21 side and the end portion (tip end) of the nozzle 20 on the collection portion 6 side. The opening on the collection unit 6 side of the hole for discharging the raw material liquid becomes the discharge port 20a.
  • the outer diameter of the nozzle 20 (diameter when the nozzle 20 is cylindrical) is not particularly limited, but a smaller outer diameter is preferable. If the outer diameter is reduced, electric field concentration tends to occur near the outlet 20a of the nozzle 20. If electric field concentration occurs in the vicinity of the discharge port 20a of the nozzle 20, the strength of the electric field formed between the nozzle 20 and the collecting unit 6 can be increased. Therefore, the voltage applied by the power supply 5 can be lowered. That is, the drive voltage can be reduced. In this case, the outer diameter dimension of the nozzle 20 can be set to about 0.3 mm to 1.3 mm, for example.
  • the dimension of the discharge port 20a can be appropriately changed according to the cross-sectional dimension of the fiber 200 to be formed.
  • the dimension of the discharge port 20a (the inner diameter dimension of the nozzle 20) can be, for example, about 0.1 mm to 1 mm.
  • the nozzle 20 is made of a conductive material. It is preferable that the material of the nozzle 20 has conductivity and resistance to a raw material liquid described later.
  • the nozzle 20 can be formed from, for example, stainless steel.
  • the number of the nozzles 20 is not particularly limited, and can be appropriately changed according to the size of the collection unit 6 and the like. It is sufficient that at least one nozzle 20 is provided. When a plurality of nozzles 20 are provided, the plurality of nozzles 20 are provided side by side at a predetermined interval. In addition, the arrangement
  • connection portion 21 is provided between the nozzle 20 and the main body portion 22.
  • the connecting portion 21 is not always necessary, and the nozzle 20 may be provided directly on the main body portion 22.
  • Inside the connection portion 21 a hole for supplying the raw material liquid from the main body portion 22 to the nozzle 20 is provided.
  • the hole provided in the connection part 21 is connected to the hole provided in the nozzle 20 and the space provided in the main body part 22.
  • the connection part 21 is formed from a conductive material. It is preferable that the material of the connection portion 21 has conductivity and resistance to the raw material liquid.
  • the connection part 21 can be formed from stainless steel etc., for example.
  • the main body 22 has a plate shape. A space for storing the raw material liquid is provided inside the main body 22.
  • the main body 22 is provided with a supply port 22a.
  • the raw material liquid supplied from the raw material liquid supply unit 4 is introduced into the main body 22 through the supply port 22a.
  • the supply port 22a can be provided, for example, on the side of the main body 22 opposite to the side where the nozzle 20 is provided.
  • the main body 22 is formed from a material having resistance to the raw material liquid.
  • the main body 22 can be formed from, for example, stainless steel.
  • the electric field control unit 3 controls the electric field formed between the nozzle head 2 and the collecting unit 6 to control the deposition state of the fiber 200.
  • the electric field control unit 3 includes an electrode 30, a holding unit 31, a guide unit 32, a moving unit 33, a conducting unit 34, a driving unit 35, and a power source 36.
  • the electrode 30 is provided on the side of the nozzle head 2 (the side of the main body 22 that intersects the surface to which the nozzle 20 is connected). There is no particular limitation on the number of electrodes 30. It is sufficient that at least one electrode 30 is provided. The electrode 30 may be provided on at least one side surface of the nozzle head 2. However, if the number of the electrodes 30 and the number of positions where the electrodes 30 are provided are increased, variations regarding the control of the deposition state of the fiber 200 can be increased.
  • the position of the end (tip) of the electrode 30 on the collecting unit 6 side is not particularly limited.
  • the position of the tip of the electrode 30 may be the same as the position of the tip of the nozzle 20, or the position of the tip of the electrode 30 may be closer to the main body 22 than the position of the tip of the nozzle 20. That is, in the direction in which the hole for discharging the raw material liquid extends, the tip of the electrode 30 is on the side opposite to the side of discharging the raw material liquid from the tip of the nozzle head 2 (the direction away from the direction of discharging the raw material liquid). Can be. If it does in this way, it will control so that the influence to the electric field around the nozzle 20 may be suppressed as needed, and it can also suppress that the raw material liquid pulled out from the nozzle 20 adheres to the electrode 30, etc. .
  • the shape of the electrode 30 is not particularly limited, and for example, it can be a solid needle-like electrode.
  • the needle-like electrode 30 extends in a direction in which a hole for discharging the raw material liquid extends.
  • the outer diameter of the electrode 30 having a needle shape, but a smaller outer diameter is preferable. If the outer diameter is reduced, electric field concentration tends to occur at the tip of the electrode 30. If electric field concentration occurs at the tip of the electrode 30, the strength of the electric field formed between the electrode 30 and the collecting unit 6 (or the counter electrode 37) can be increased. Therefore, it becomes easy to control the deposition state of the fiber 200 described later. Further, the voltage applied by the power source 36 can be lowered. That is, the drive voltage can be reduced. In this case, the outer diameter of the electrode 30 can be set to about 0.3 mm to 1.3 mm, for example. The electrode 30 can also have a pointed tip. In this case, the outer diameter of the tip can be set to about 0.3 mm to 1.3 mm, for example. The electrode 30 has conductivity. The electrode 30 can be formed from metals, such as a copper alloy and stainless steel, for example.
  • the holding unit 31 holds the electrode 30.
  • the electrode 30 can be provided in the vicinity of one end of the holding portion 31.
  • the holding portion 31 can be formed from a material having electrical insulation properties such as resin.
  • the holding unit 31 can be formed from a conductive material such as metal. In this case, the electrode 30 is electrically connected to the nozzle head 2.
  • the guide part 32 is provided between the main body part 22 and the holding part 31.
  • the guide part 32 defines the moving direction of the electrode 30.
  • the guide portion 32 can be, for example, a linear motion bearing.
  • the moving unit 33 moves the electrode 30 through the holding unit 31.
  • the moving part 33 can have, for example, a screw mechanism.
  • the moving part 33 has a rod shape, and may have a left-hand thread on one end side and a right-hand thread on the other end side. In this way, by rotating the moving part 33 in one direction, the two electrodes 30 provided facing each other can be moved in a direction approaching the nozzle head 2. Further, by rotating the moving part 33 in the other direction, the two electrodes 30 provided facing each other can be moved in a direction away from the nozzle head 2.
  • the conduction unit 34 is provided between the drive unit 35 and the moving unit 33.
  • the conduction unit 34 transmits the power from the drive unit 35 to the moving unit 33.
  • the conductive portion 34 can be, for example, a timing belt and a timing pulley. It is preferable that at least a part of the conductive portion 34 has electrical insulation so that the power source 5 and the power source 36 are electrically insulated from the drive unit 35. In the case illustrated in FIG. 1, the power source 5 and the power source 36 are electrically insulated from the driving unit 35 by a timing belt made of rubber or the like. In this way, the drive unit 35 can be protected.
  • the drive unit 35 may be a control motor such as a servo motor, for example.
  • a detector or the like that directly or indirectly detects the position of the electrode 30 can be provided as appropriate.
  • the electrode 30 moves in a direction (for example, horizontal direction) intersecting with a direction in which a hole for discharging the raw material liquid extends (corresponding to a direction in which the raw material liquid is discharged)
  • the electrode 30 is illustrated.
  • the electrode 30 moves in the direction in which the hole for discharging the raw material liquid extends (for example, the vertical direction), or the electrode 30 discharges the raw material liquid in the direction in which the hole for discharging the raw material liquid extends. It is also possible to move in a direction intersecting with the direction in which the holes extend. Further, as shown in FIG. 2, the electrode 30 may move around the nozzle head 2 in the rotation direction ( ⁇ direction).
  • the electrode 30 is provided on the nozzle head 2 via the holding portion 31.
  • the holding unit 31 is configured to rotate in the nozzle head 2 with the direction substantially along the direction of discharging the raw material liquid from the hole as an axis.
  • the electrode 30 it becomes possible for the front-end
  • the electrode 30 is provided in the nozzle head 2 via the holding portion 31, and the holding portion 31 rotates about the direction intersecting the direction in which the holes for discharging the raw material liquid are arranged. It is configured. By doing so, the nozzle head 2 rotates in a circular arc shape with the tip of the electrode 30 as an axis intersecting the direction in which the holes for discharging the raw material liquid are arranged, and the raw material liquid is discharged. It is configured to be movable so that the distance between the holes changes.
  • the movement control of the electrode 30 may be uniaxial control or multi-axis control.
  • the nozzle head 2 may move with respect to the electrode 30. That is, the electrode 30 only needs to be movable relative to the nozzle head 2.
  • the nozzle head 2 is attached to a housing (not shown) of the electrospinning apparatus 100 via a bracket having electrical insulation, and the bracket having electrical insulation.
  • the electrode 30, the holding unit 31, the guide unit 32, the moving unit 33, the conducting unit 34, the driving unit 35, the power source 36, and the like may be attached to the casing.
  • the nozzle head 2 moves with respect to the electrode 30, it becomes easy to adjust the process conditions (for example, the distance between the nozzle head 2 and the collecting unit 6).
  • the electrode 30 is moved relative to the nozzle head 2, the deposition state of the fiber 200 can be controlled with the process conditions fixed.
  • the power source 36 applies a voltage to the electrode 30.
  • the power source 36 applies a voltage to the plurality of electrodes 30.
  • the polarity of the voltage applied to the electrode 30 is the same as the polarity of the voltage applied to the nozzle 20.
  • the power source 36 illustrated in FIG. 1 applies a positive voltage to the electrode 30.
  • the voltage applied to the electrode 30 There is no particular limitation on the voltage applied to the electrode 30. In this case, if the voltage applied to the electrode 30 is approximately the same as the voltage applied to the nozzle 20, it is possible to suppress discharge from occurring between the electrode 30 and the nozzle 20. Further, the power source 36 can change the voltage applied to the electrode 30.
  • the power source 36 can be, for example, a DC high voltage power source.
  • the power source 36 can output a DC voltage of 10 kV to 100 kV, for example.
  • the power source 36 is not necessarily required and can be omitted.
  • the power source 5 applies a voltage to the electrode 30. If the power source 36 is omitted, the configuration of the nozzle head module 1 can be simplified, and the manufacturing cost can be reduced. Moreover, if the power supply 36 is provided and the voltage applied to the electrode 30 is changed, the variation regarding control of the deposition state of the fiber 200 can be increased.
  • the raw material liquid supply unit 4 includes a storage unit 41, a supply unit 42, a raw material liquid control unit 43, and a pipe 44.
  • the storage unit 41 stores the raw material liquid.
  • the storage part 41 is formed from a material having resistance to the raw material liquid.
  • the storage part 41 can be formed from, for example, stainless steel.
  • the raw material liquid is obtained by dissolving a polymer substance in a solvent.
  • a polymer substance there is no particular limitation on the polymer material, and it can be changed as appropriate according to the material of the fiber 200 to be formed.
  • the solvent may be any solvent that can dissolve the polymer substance.
  • the solvent can be appropriately changed according to the polymer substance to be dissolved.
  • the raw material liquid is allowed to remain in the vicinity of the discharge port 20a due to surface tension. Therefore, the viscosity of the raw material liquid can be appropriately changed according to the size of the discharge port 20a.
  • the viscosity of the raw material liquid can be obtained by performing experiments and simulations.
  • the viscosity of the raw material liquid can be controlled by the mixing ratio of the solvent and the polymer material.
  • the supply unit 42 supplies the raw material liquid stored in the storage unit 41 to the main body unit 22.
  • the supply unit 42 can be, for example, a pump having resistance to the raw material liquid.
  • the supply unit 42 may supply gas to the storage unit 41 and pump the raw material liquid stored in the storage unit 41, for example.
  • the raw material liquid control unit 43 controls the flow rate, pressure, and the like of the raw material liquid supplied to the main body 22, and when a new raw material liquid is supplied into the main body 22, the raw material in the main body 22 The liquid is prevented from being pushed out from the discharge port 20a.
  • the control amount with respect to the raw material liquid control part 43 can be suitably changed with the dimension of the discharge port 20a, the viscosity of a raw material liquid, etc.
  • the control amount for the raw material liquid control unit 43 can be obtained through experiments and simulations.
  • the raw material liquid control unit 43 can switch between the start of supply of the raw material liquid and the stop of supply.
  • the supply part 42 and the raw material liquid control part 43 are not necessarily required.
  • the storage unit 41 is provided at a position higher than the position of the main body 22, the raw material liquid can be supplied to the main body 22 using gravity. Then, by appropriately setting the height position of the storage part 41, when a new raw material liquid is supplied into the main body part 22, the raw material liquid inside the main body part 22 is not pushed out from the discharge port 20a. Can be. In this case, the height position of the storage part 41 can be appropriately changed depending on the dimensions of the discharge port 20a, the viscosity of the raw material liquid, and the like. The height position of the storage unit 41 can be obtained by performing experiments and simulations.
  • the piping 44 is provided between the storage unit 41 and the supply unit 42, between the supply unit 42 and the raw material liquid control unit 43, and between the raw material liquid control unit 43 and the main body unit 22.
  • the pipe 44 serves as a flow path for the raw material liquid.
  • the pipe 44 is made of a material having resistance to the raw material liquid.
  • the power supply 5 applies a voltage to the nozzle 20 via the main body 22 and the connection part 21. That is, a voltage having a predetermined polarity is applied to the nozzle head 2.
  • a terminal (not shown) electrically connected to the plurality of nozzles 20 may be provided.
  • the power source 5 applies a voltage to the nozzle 20 via a terminal (not shown). That is, it is only necessary that a voltage can be applied from the power source 5 to the plurality of nozzles 20. Further, when the power source 36 is not provided, the power source 5 applies a voltage to the electrode 30 as well.
  • the polarity of the voltage applied to the nozzle 20 can be positive or negative.
  • the power supply 5 illustrated in FIG. 1 applies a positive voltage to the nozzle 20.
  • the voltage applied to the nozzle 20 can be appropriately changed according to the type of the polymer substance contained in the raw material liquid, the distance between the nozzle 20 and the collection unit 6, and the like.
  • the power source 5 can apply a voltage to the nozzle 20 so that the potential difference between the nozzle 20 and the collecting unit 6 is 10 kV or more.
  • the power source 5 can be a DC high-voltage power source, for example.
  • the power supply 5 can output a DC voltage of 10 kV to 100 kV, for example.
  • the collection unit 6 is provided on the side from which the raw material liquid of the plurality of nozzles 20 is discharged.
  • the collecting unit 6 is grounded.
  • a voltage having a reverse polarity to the voltage applied to the nozzle 20 may be applied to the collecting unit 6.
  • the collection unit 6 can be formed from a conductive material. It is preferable that the material of the collecting unit 6 has conductivity and resistance to the raw material liquid.
  • the material of the collection unit 6 can be stainless steel, for example.
  • the collection unit 6 may have a plate shape or a sheet shape. In the case of the collecting unit 6 having a sheet shape, the fiber 200 may be deposited on the collecting unit 6 wound around a roll or the like.
  • the collection unit 6 may be moved.
  • a pair of rotating drums and a drive unit that rotates the rotating drums may be provided, and the sheet-like collecting unit 6 may move between the pair of rotating drums like a belt of a belt conveyor.
  • the region in which the fiber 200 is deposited can be moved, so that a continuous deposition operation can be performed. Therefore, the production efficiency of the deposit 210 made of the fiber 200 can be improved.
  • the deposit 210 formed on the collecting unit 6 is removed from the collecting unit 6.
  • the deposit 210 is used for a nonwoven fabric, a filter, etc., for example.
  • the use of the deposit 210 is not limited to the example illustrated.
  • the collecting unit 6 can be omitted.
  • the deposit 210 made of the fibers 200 can be directly formed on the surface of a member having conductivity.
  • the conductive member may be grounded, or a voltage having a polarity opposite to that applied to the nozzle 20 may be applied to the conductive member.
  • a base material may be provided on the collection unit 6 and the fiber 200 may be deposited on the base material to form the deposit 210.
  • the deposit 210 can be formed even on a substrate having electrical insulation.
  • the base material may move on the collection unit 6.
  • a rotating drum around which a sheet-like substrate is wound and a rotating drum that winds up the sheet-like substrate on which the deposit 210 is formed are provided, and the sheet-like substrate passes over the collection unit 6. Can be. In this way, continuous deposition work is possible. Therefore, the production efficiency of the deposit 210 made of the fiber 200 can be improved.
  • the control unit 7 controls operations of the drive unit 35, the power source 36, the supply unit 42, the raw material liquid control unit 43, and the power source 5.
  • the control unit 7 can be, for example, a computer including a CPU (Central Processing Unit) and a memory.
  • the electrospinning apparatus 100 can further include a photographing apparatus 8 such as a CCD camera.
  • the imaging device 8 images the deposition state of the fiber 200 described later, and transmits the captured image data to the control unit 7.
  • the control unit 7 controls the position, moving direction, moving speed, applied voltage, and the like of the electrode 30 based on the received image data so that the deposition state of the fiber 200 becomes a predetermined one.
  • the control amount related to the electrode 30 such as the position, moving direction, moving speed, and applied voltage of the electrode 30 is determined by process conditions such as components of the raw material liquid, voltage applied to the nozzle 20, distance between the nozzle 20 and the collecting unit 6 Affected by. Therefore, it is preferable to determine the control amount related to the electrode 30 by performing experiments and simulations.
  • the raw material liquid remains in the vicinity of the discharge port 20a of the nozzle 20 due to surface tension.
  • the power source 5 applies a voltage to the nozzle 20.
  • the raw material liquid in the vicinity of the discharge port 20a is charged with a predetermined polarity. In the case illustrated in FIG. 1, the raw material liquid in the vicinity of the discharge port 20a is positively charged.
  • a deposited body 210 is formed by depositing the formed fiber 200 on the collection unit 6.
  • the stretched raw material liquid (fiber 200) is sucked by the electrostatic force acting along the electric lines of force between the nozzle 20 and the collecting unit 6 and reaches the collecting unit 6. Therefore, it is difficult to control the position where the fiber 200 is deposited, the deposition amount in a predetermined region, the orientation state of the deposited fiber 200, and the like. That is, it is difficult to control the deposition state of the fiber 200. Therefore, in the electrospinning apparatus 100 according to the present embodiment, the electric field control unit 3 controls the electric field formed between the nozzle head 2 and the collection unit 6 to control the deposition state of the fiber 200. I have to.
  • FIG. 4 is a schematic diagram for illustrating the equipotential lines 220 when the electrode 30 moves in a direction approaching the nozzle head 2.
  • FIG. 5 is a schematic diagram for illustrating the equipotential lines 220 when the electrode 30 moves in a direction away from the nozzle head 2.
  • the electric field formed between the nozzle 20 and the collecting unit 6 changes under the influence of the electric field formed between the electrode 30 and the collecting unit 6.
  • a voltage having the same polarity as the voltage applied to the nozzle 20 is applied to the electrode 30, so that the electric lines of force going out from the nozzle 20 toward the collecting unit 6,
  • the lines of electric force toward the collecting unit 6 repel each other. That is, an electric field formed between the nozzle 20 and the collecting unit 6 is defined by the electric lines of force that exit from the electrode 30 and travel toward the collecting unit 6.
  • the deposition amount in a predetermined region Etc. can be controlled.
  • FIG. 6 is a schematic diagram for illustrating the position where the fiber 200 is deposited and the control of the deposition amount in a predetermined region.
  • FIG. 6 is a view of the nozzle head 2 as viewed from above. As shown in FIG. 6, when the electrode 30 is moved, the position where the fiber 200 is deposited moves in the reverse direction. Therefore, the position 230 where the fiber 200 is deposited can be moved. In this case, the deposition amount in a predetermined region can be controlled by the position 230 where the fiber 200 is deposited and the deposition time. That is, a local thickening or a local thinning is possible.
  • FIGS. 7A and 7B are schematic views for illustrating the control of the orientation state of the deposited fiber 200.
  • FIG. FIG. 7A is a view of the nozzle head 2 as viewed from above.
  • the position where the fiber 200 is deposited moves in the reverse direction. Therefore, as shown in FIG. 7A, by reciprocating the electrode 30, the extending direction of the deposited fibers 200 can be aligned as shown in FIG. 7B.
  • the nozzle head 2 it is assumed that a plurality of nozzles 20 are arranged so as to be provided in the main body portion 22 via the connection portion 21.
  • each electrode 30 can be reciprocated in a direction crossing the direction in which the plurality of nozzles 20 are arranged. In this case, the reciprocating movement of the electrode 30 needs to be faster than the discharge speed of the raw material liquid.
  • FIG. 8A and 8B are schematic views for illustrating the control of the orientation state of the deposited fiber 200.
  • FIG. FIG. 8A is a view of the nozzle head 2 as viewed from above. As shown in FIG. 8A, if the direction in which the one electrode 30 is reciprocated and the direction in which the other electrode 30 is reciprocated are changed, as shown in FIG. The extending direction of the deposited fiber 200 can be aligned. Further, the fiber 200 can be knitted in the region where both overlap.
  • a plurality of nozzles 20 are arranged so as to be provided in the main body portion 22 via the connection portion 21. In this case, each electrode 30 can be independently reciprocated in the direction along the direction in which the plurality of nozzles 20 are arranged and the direction in which the plurality of nozzles 20 are arranged. .
  • FIGS. 9A to 9D are schematic views for illustrating the form of the deposit 210.
  • 9A to 9D are views of the deposited body 210 as viewed from above.
  • the electric field control unit 3 controls the electric field formed between the nozzle head 2 and the collection unit 6, the deposition state of the fiber 200 can be changed.
  • the deposit 210 can be formed in accordance with the planar shape of the collection unit 6.
  • FIGS. 9B and 9C a deposit 210 having an arbitrary planar shape can be formed on the collection unit 6.
  • a plurality of deposits 210 separated from each other can be formed on the collection unit 6.
  • local thickening or local thinning can be performed by depositing the fiber 200 at an arbitrary position on the collecting unit 6 or not depositing the fiber 200.
  • a base material may be provided on the collecting unit 6 or a sheet-like base material may move on the collecting unit 6.
  • a deposit 210 having an arbitrary shape can be formed on the substrate in accordance with the shape and dimensions of the substrate. That is, the fiber 200 is deposited at an arbitrary position on the base material on the collecting unit 6, for example, a sheet-like base material, or the fiber 200 is not deposited. It is also possible to make a thin film.
  • the deposit 210 having an arbitrary shape can be formed without stopping the electrospinning apparatus 100. Moreover, the deposit 210 can be formed without protruding from the collection unit 6 or the base material. Therefore, the consumption of the raw material liquid can be reduced and the productivity can be improved.
  • FIGS. 10A and 10B are schematic perspective views for illustrating the counter electrode 37.
  • the counter electrodes 37, 38 a, and 38 b are provided on the side surface side of the collection unit 6.
  • the counter electrodes 37, 38 a, 38 b are opposed to the electrode 30.
  • the shape, size, number, and the like of the counter electrodes 37, 38a, and 38b can be appropriately changed according to the number of electrodes 30, a moving range, and the like.
  • the counter electrodes 37, 38a, 38b are grounded.
  • a voltage having a polarity opposite to that applied to the electrode 30 may be applied to the counter electrodes 37, 38a, and 38b by a power source (not shown).
  • the voltage applied to the counter electrodes 37, 38a, 38b is not particularly limited. However, if the voltage applied to the counter electrodes 37, 38 a, 38 b and the voltage applied to the collection unit 6 are approximately the same, a discharge is generated between the counter electrodes 37, 38 a, 38 b and the collection unit 6. Can be suppressed. Moreover, if the voltage applied to the counter electrodes 37, 38a, and 38b is changed, variations relating to the control of the deposition state of the fiber 200 can be increased.
  • the counter electrodes 37, 38a, and 38b can be formed of a conductive material.
  • the material of the counter electrodes 37, 38a, and 38b is preferably conductive and resistant to the raw material liquid.
  • the material of the counter electrodes 37, 38a, 38b can be stainless steel, for example.
  • the counter electrodes 37, 38a, and 38b can be fixed, or can be moved in a predetermined direction.
  • the counter electrode 37 can be moved in the X direction and the Y direction.
  • the counter electrode 38a provided in the vicinity of the collecting unit 6 is fixed, and the counter electrode 38b provided at a more distant position can be moved in a predetermined direction. You can also.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Un module de tête de buse (1) selon un mode de réalisation de l'invention comporte : une tête de buse (2) ayant un trou pour déverser un liquide de matière première et conçue pour se voir appliquer une tension ayant une polarité prédéterminée ; et des électrodes (30) disposées de façon à être relativement mobiles dans une direction tridimensionnelle par rapport à la tête de buse (2) et conçues pour se voir appliquer une tension ayant la même polarité que celle de la tension appliquée à la tête de buse (2).
PCT/JP2016/075853 2016-03-17 2016-09-02 Module de tête de buse et dispositif d'électrofilage WO2017158875A1 (fr)

Priority Applications (2)

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CN201680011575.0A CN107429428B (zh) 2016-03-17 2016-09-02 喷嘴头模块及电场纺丝装置
US15/460,565 US20170268131A1 (en) 2016-03-17 2017-03-16 Nozzle head module and electrospinning apparatus

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JP2016054365A JP6427518B2 (ja) 2016-03-17 2016-03-17 ノズルヘッドモジュール、および電界紡糸装置
JP2016-054365 2016-03-17

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JP2018059221A (ja) * 2016-10-03 2018-04-12 花王株式会社 シート状の繊維堆積体の製造装置及び該繊維堆積体の製造方法
WO2019077884A1 (fr) * 2017-10-20 2019-04-25 株式会社 東芝 Dispositif d'électrofilature

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JP2019167641A (ja) * 2018-03-22 2019-10-03 パナソニックＩｐマネジメント株式会社 電界紡糸装置および繊維集合体の製造方法
JP6811742B2 (ja) * 2018-04-20 2021-01-13 株式会社東芝 電界紡糸ヘッドおよび電界紡糸装置
CN109385670B (zh) * 2018-10-12 2021-04-23 青岛科技大学 一种无针静电纺丝喷头泰勒锥均布增效装置及方法
JP7374672B2 (ja) * 2019-09-05 2023-11-07 株式会社東芝 電界紡糸ヘッド及び電界紡糸装置
CN112030243B (zh) * 2020-08-26 2021-08-20 广东工业大学 多针头交错式直写静电纺丝装置及光栅线制作的方法
CN112481710B (zh) * 2020-11-19 2022-07-22 广州初曲科技有限公司 一种用于异形面料的可调多喷头单根混纺静电纺丝装置
JP2023034887A (ja) * 2021-08-31 2023-03-13 株式会社東芝 電解コンデンサの製造方法、電解コンデンサ及び電解コンデンサの製造装置

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JP2018059221A (ja) * 2016-10-03 2018-04-12 花王株式会社 シート状の繊維堆積体の製造装置及び該繊維堆積体の製造方法
WO2019077884A1 (fr) * 2017-10-20 2019-04-25 株式会社 東芝 Dispositif d'électrofilature

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CN107429428A (zh) 2017-12-01
JP6427518B2 (ja) 2018-11-21
JP2017166100A (ja) 2017-09-21

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