KR100436602B1 - Electrospinning apparatus having multiple-nozzle and the method for producing nanofiber by using the same - Google Patents

Abstract

According to the present invention, the solution supply unit for supplying a solution in which the polymer material to be a fiber raw material dissolved; A spinning nozzle pack comprising a plurality of spinning nozzle units receiving the solution from the solution supply unit and discharging the solution into a filament form; A voltage applying unit for charging the solution by applying a predetermined voltage to the radiation nozzle unit; It is charged with the same polarity through the voltage applying unit and installed in a symmetrical manner with the radiation nozzle pack interposed therebetween to control the unstable flow due to mutual repulsion of the charged filaments discharged from the respective radiating nozzle parts and the same polarity as the charged filament A stream control panel to which a voltage is applied to charge the battery; A collector installed at a lower side with a predetermined distance from the spinning nozzle pack, the collector being charged with a polarity opposite to that of the charged filament so that the charged filament discharged from the spinning nozzle part is integrated on an upper surface thereof; And a solvent suction unit for sucking and exhausting a solvent from an air layer between the spinneret pack and the collector when discharging the charged filament.

Description

Electrospinning apparatus having multiple nozzles and a method for producing nanofibers using the same {{Electrospinning apparatus having multiple-nozzle and the method for producing nanofiber by using the same}

The present invention relates to an electrospinning apparatus and a method for manufacturing nanofibers, and more particularly, to an electrospinning apparatus having multiple nozzles and a nanofiber manufacturing method using the same so as to manufacture a large amount of nano-class fibers.

Electrospinning is different from conventional melt spinning, wet spinning, and wet-dry spinning, and the solution is charged by directly applying a positive polarity ((+)] or a negative polarity ((-)] to the spinning nozzle. The spinning solution is discharged to the air layer via the spinning nozzle part, and then a fine fiber is produced in the air layer through the stretching of the charged filament and another filament branch. The discharge filament in which the positive (+) charge is charged through the application of the positive polarity ((+)] voltage or the discharge filament in which the negative (−) charge is charged through the application of the negative polarity ((-)] voltage (Collector, hereinafter referred to as a collector) in the electric field formed between microscopic repulsion due to electrical fluctuations such as mutual repulsion between adjacent filaments. The ultrafine filaments thus formed are fabricated in the form of a web by being integrated on the collector charged to the opposite polarity of the collector or the charged filament whose diameter is a nano-class fiber. As such, electrospinning is used as a method for producing a porous web similar to a separator.

The electrospinning method currently used is a method of manufacturing fibers by discharging a solution of several grams per hour (g) or less from one nozzle, and has a disadvantage in that the production speed is very low and the economic efficiency is low. Nanofibers, in particular, are produced by releasing very little solution, which leads to the problem of the production rate of the web produced therefrom.

This problem can be solved by using multiple nozzles, but when the nozzles are configured in multiple, the discharge stream becomes nonuniform due to the repulsive force between the charged filaments, and thus it is difficult to apply high pressure to the nozzles. There is a side that is very difficult to construct a multiple nozzle.

Conventional techniques related to the fabrication method of the electrospinning method are disclosed in U.S. Patent No. 4,323,525, and a tube is formed by spinning a raw material solution from a grounded three syringes to a rotating drum to which a high voltage of -50 KV is applied. The method of manufacturing a shaped object is mentioned. However, this technique is not only low in production speed, but also limited to the production of tubular products, and there is still a need for an alternative for mass production of flat webs for various applications.

Recently, the basic mechanisms for producing nanometer-grade fibers with diameters of less than micrometers have been described in several literature (JM Deitzel, JDKleinmeyer, JKHirvonen, NCBeck Tan, Polymer 42 , 8163-8170 (2001)), JMDeitzel, JDKleinmeyer, D. Harris, NCBeck Tan, Polymer 42 , 261-272 (2001)], and YMShin, MMHohman, mPBrenner, GCRutledge, Polymer 42 , 9955-9967 (2001). However, the methods introduced in these documents are merely a description of the basic principles of known electrospinning, and thus are not suitable for practical industrial use.

The present invention has been made in consideration of the above-described point, and an object of the present invention is to provide an electrospinning device which is configured to have multiple nozzles to improve nanofiber production speed.

Another object of the present invention is to provide an electrospinning device for spinning a nano-class fiber of uniform diameter from multiple nozzles.

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to

1 is a perspective view schematically showing the configuration of an electrospinning apparatus according to an embodiment of the present invention.

2 is a view schematically showing an example of a configuration of a spinning nozzle pack used in the electrospinning apparatus according to the present invention.

Figure 3 is a view schematically showing another example of the configuration of the spinning nozzle pack used in the electrospinning apparatus according to the present invention.

4 is a view showing a radiation pattern when a stream control panel is configured according to the present invention.

5 is a view showing a radiation pattern when the stream control panel is not configured.

<Description of main reference numerals in the drawings>

10 ... quantitative pump 11 ... first distribution 12 ... second distribution

13 High voltage generator 14 Radiation nozzle pack 15 Radiation nozzle compartment

16.Electric ring 17 ... Stream control panel 18 ... Electromagnetic interference shield

20 Solvent suction 21 Collector

In order to achieve the above object, the present invention, the solution supply unit for supplying a solution in which the polymer material to be a fiber raw material dissolved; A spinning nozzle pack comprising a plurality of spinning nozzle units receiving the solution from the solution supply unit and discharging the solution into a filament form; A voltage applying unit for charging the solution by applying a predetermined voltage to the radiation nozzle unit; It is charged with the same polarity through the voltage applying unit and installed in a symmetrical manner with the radiation nozzle pack interposed therebetween to control the unstable flow due to mutual repulsion of the charged filaments discharged from the respective radiating nozzle parts and the same polarity as the charged filament A stream control panel to which a voltage is applied to charge the battery; A collector installed at a lower side with a predetermined distance from the spinning nozzle pack, the collector being charged with a polarity opposite to that of the charged filament so that the charged filament discharged from the spinning nozzle part is integrated on an upper surface thereof; And a solvent suction unit for sucking and exhausting a solvent from an air layer between the spinneret pack and the collector when discharging the charged filament.

Preferably, the present invention further includes: an electric field interference preventing plate for forming a plurality of through-holes to insert each of the radiation nozzle parts to block electric field interference between adjacent radiation nozzle parts.

According to another aspect of the invention, the step of providing a spin nozzle pack consisting of a plurality of spin nozzle; Supplying a solution in which a polymer material as a fiber material is dissolved to the spinning nozzle unit; Charging the solution by applying a voltage to the spinning nozzle; Installing a charging conductor to be symmetrical with the radiation nozzle pack interposed therebetween, and applying a voltage to the charging conductor so that a charge having the same polarity as that of the charging solution is charged; And discharging the charged filament from the spinning nozzle unit and integrating the charged filament onto the collector.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 1 is a perspective view schematically showing the configuration of the electrospinning apparatus according to the present invention. Referring to the drawings, the present invention includes a solution supply unit including a metering pump 10, a spinning nozzle pack 14 consisting of a plurality of spinning nozzle unit 15, and is accommodated in the spinning nozzle unit 15 A high voltage generation unit 13 corresponding to a voltage application unit for charging a solution, a stream control panel 17, a solvent suction unit 20 for increasing solvent volatility, and a collector 21 for integrating spinning fibers do.

The solution supply part is a metering pump 10 for precisely transferring the quantitative raw material solution, and the metering pump 10 and the spinning nozzle so that the solution transferred from the metering pump 10 is quantitatively distributed to the spinning nozzle pack 14 side. A distribution preferably interposed between the packs 14.

The dispensing unit may be configured as a single unit, and as shown in the drawing, a second distributing unit added to distribute the first dispensing unit 11 and the solution dispensed through the first distributing unit 11 again. It may be configured to include (12). In this case, the solution distributed through the first distribution unit 11 flows into the second distribution unit 12 via the first tube 11a and is distributed again through the second distribution unit 12. The prepared solution is introduced into each of the spinning nozzle portions 15 constituting the spinning nozzle pack 14 via the second tube 12a.

The spinning nozzle pack 14 includes a plurality of spinning nozzles 15. At this time, the needle nozzle (Needle) nozzle that is commonly used in the electrospinning method may be employed as the spinning nozzle unit 15. In particular, the diameter of the capillary portion 15a formed below the spinning nozzle part 15 is preferably 0.05 to 3 mm in inner diameter and 0.1 to 4 mm in outer diameter, and preferably 0.5 to 50 mm in length.

As shown in FIG. 2, the radiation nozzle pack 14 may be configured by connecting a plurality of radiation nozzle parts 15 to which the second tube 12a is connected. At this time, the energizing ring 16 which is in electrical contact with the receiving solution is coupled to the spinning nozzle unit 15, the high voltage generating unit 13 by electrically connecting the energizing ring 16 of each spinning nozzle unit 15 with each other When the voltage is applied from) to charge the spinning solution contained in all the spinning nozzle unit 15.

Alternatively, as shown in FIG. 3, a solution accommodating part 19 having an internal space for accommodating a solution supplied from the metering pump 10 and inside the solution accommodating part 19 to be immersed in the solution. Radiating nozzle pack including a conductive plate (19a) is installed to charge the solution when the voltage is applied, and a plurality of radiation nozzle portion 15 is installed so that the opening is in communication with the lower portion of the solution receiving portion (19) 14 may be configured. In this case, the charging of the solution is achieved by applying a voltage from the high voltage generator 13 to the current carrying plate 19a.

The interval between the radiation nozzle portions 15 constituting the radiation nozzle pack 14 is set in consideration of securing the installation space of the electric field interference preventing plate 18 and the number of radiation nozzle portions 15 that can be used. For example, the spacing between the spinneret portions 15 may be set to 1 to 20 mm, more preferably 3 to 15 mm.

In the electrospinning apparatus of the present invention, the charged solution discharged from the spinning nozzle unit 15 onto the filament, i.e., the charged filaments repel each other due to the same polarity to spread out of the spinning nozzle pack 14 so that the stream becomes unstable. A stream control panel 17 is installed surrounding the spinning nozzle pack 14.

Here, a voltage is applied to the stream control panel 17 so as to be charged in the same polarity as the charged filament. As a power supply device for this purpose, the high voltage generator 13 for applying a voltage to the radiation nozzle unit 15 may be used as it is, and a separate high voltage generator may be further provided.

The stream control panel 17 is a conductor installed symmetrically with the radiation nozzle pack 14 interposed therebetween, for example, on both sides, front and rear, or both sides of the radiation nozzle pack 14. The stream control panel 17 is preferably configured in the form of a metal plate, and may be composed of various conductive plates, metal rods, conductive rods, and the like.

In consideration of the direction and intensity of the electrostatic force acting between the stream control panel 17 and the charged filament, the stream control panel 17 is installed in the periphery within a range of 1 to 20 cm from the spinneret pack 14, and the stream control panel 17 The lower end is preferably positioned within the upper 10 cm to the lower 10 cm of the lower end of the spinning nozzle unit 15 for effective stream control. More preferably, the lower end position of the stream control panel 17 is located in the same position as the lower end of the spinneret part 15, or located within a range of 5 cm upward from the lower end of the nozzle.

The electric field interference preventing plate 18 serves to prevent the electric field formed around each of the radiation nozzle parts 15 from interfering with the high voltage applied. As a preferred embodiment for this function, the electric field interference prevention plate 18 may be configured in the form of a block in which a plurality of holes are formed so that each radiation nozzle unit 15 is inserted.

By installing the electric field interference preventing plate 18, the same electric field is formed between the collector 21 and each of the radiation nozzle portions 15 irrespective of the position of the radiation nozzle portion 15 on the radiation nozzle pack 14. Teflon-based or ceramic-based insulating materials are preferably used as the material of the electric field interference preventing plate 18, and various other insulating materials may be employed. Here, the lower surface of the electric field interference preventing plate 18 is located at a predetermined dimension, that is, several mm to several cm above the lower end of the radiation nozzle unit 15, is effective for preventing the electric field interference.

When the discharge of the solution is made in large quantities at the same time, the charged filaments are accumulated in the collector 21 while being agglomerated with each other. In order to prevent such agglomeration phenomenon, a solvent suction unit 20 is installed between the spinning nozzle pack 14 and the collector 21 to increase the solvent volatilization degree. That is, the volatilization degree of the solvent dissolved in the charged filament discharged by sucking and exhausting the air between the spinning nozzle pack 14 and the collector 21 through the solvent suction part 20 is promoted.

To this end, the solvent suction unit 20 is configured to include suction means such as, for example, a suction fan (Fan). At this time, the suction air volume is set in a range that does not affect the discharge stream of the charged filament, and as a preferred embodiment, 4 to 500 m 3 per hour is suitable.

The charged filament discharged from the spinning nozzle part 15 is integrated on the collector 21. The collector 21 is grounded or a voltage opposite to the polarity of the voltage applied to the spinning nozzle unit 15 is applied, and is continuously below the spinning nozzle pack 14 through a transfer means such as a roller 21a. It is preferable to configure so as to supply. In this case, as the material of the collector 21, a metal plate having excellent conductivity is preferably used. In addition, various kinds of conductive materials may be employed.

Then, preferred embodiments for producing nano-class fibers using the electrospinning device of the present invention configured as described above will be described.

First, polymer materials applicable to electrospinning include polyvinyllidene fluoride (PVDF), polyacrylonitile (PAN), polysulfone (PS), All polymer materials soluble in a solvent such as polyimide (PI) and polyethylene oxide (PEO) may be employed, and may be employed in a single or two or more mixed state.

The concentration of the spinning solution is set differently depending on the type of the polymer, the molecular weight, and the interaction between the solvents, but a solution having sufficient viscosity of the radioactivity and the stretchability is preferable. When the concentration of the solution is too low, such as 5% by weight or less, a cost problem occurs due to the amount of solvent recovery, and when too high, it is difficult to manufacture nano-grade fibers due to the elongation and branching problems in the air layer. In view of this, the preferred concentration of the solution is 5 to 25% by weight. More preferred concentration is 10 to 20% by weight.

In addition, the viscosity of the solution is preferably 100 to 20,000 centipoise (cP) at room temperature in consideration of radioactivity and stretchability. More preferable viscosity is 200-10,000 cP.

The prepared solution is pumped through the metering pump 10 and supplied to the spinning nozzle unit 15. The high pressure voltage is applied to the spinning nozzle unit 15 to discharge the charged solution into the air layer.

At this time, the voltage applied to the radiation nozzle unit 15 preferably corresponds to a positive potential in the range of 10 ~ 60KV. When a voltage of 10 KV or less is applied to the spinning nozzle unit 15, the discharge flow is uneven, and when a voltage of 60 KV or more is applied, unstable flow such as fluctuation due to mutual repulsive force between the filaments is shown. Here, more preferable voltage is 20-45 KV.

The stream control panel 17 applies a voltage having the same or different intensity as that applied to the radiation nozzle unit 15. Preferably, the voltage applied to the stream control panel 17 is a positive potential of 10 to 60 KV. When a voltage of 10 KV or less is applied to the stream control panel 17, the filament discharged from the radiation nozzle unit 15 located outside the radiation nozzle pack 14 is released to the outside, and when a voltage of 60 KV or more is applied, the discharged filament jet As the flow of gas is pushed inward, it cannot maintain a stable radiation flow. Here, more preferable voltage is 20-50KV.

The discharge amount of each spinning nozzle unit 15 is suitably 10 to 1000 microliters (μl) per minute. If it is less than 10μl per minute, the production rate is low, if more than 1000μL it is difficult to produce nano-grade fibers.

The separation distance between the lower end of the spinning nozzle unit 15 and the collector 21 is preferably 10 to 100 cm, considering the solvent volatility and the electric field strength (KV / cm). More preferred distance is 20-80 cm.

The solvent suction amount by the solvent suction part 20 adjusts the air volume in a range that does not affect the flow of the charged filament. Accordingly, the preferred wind speed measured at a distance of 1 cm from the discharge filament is preferably such that 0.1 to 8 m / s.

Since the filament discharged from the radiation nozzle unit 15 to which the positive potential is applied has a positive polarity charge, the negative potential of the collector 21 or the radiation nozzle unit 15 which is simply grounded is increased. Integration is done using an applied collector 21. On the contrary, when a negative potential is applied to the radiation nozzle unit 15, a collector which is simply grounded or a collector 21 to which a positive (+) potential is applied to the radiation nozzle unit 15 is used.

The diameter of the fiber integrated through the present invention configured as described above is a nano-grade fiber of less than 1 micron (μm), the laminated nanofibers constitute a web similar to the porous membrane.

Then, more specific examples and comparative examples of a method for producing nanoscale fibers using the electrospinning device of the present invention will be described. The following examples and comparative examples clearly show the state of spinning and manufacturing fiber according to the installation of the stream control panel in the electrospinning apparatus of the present invention.

First, poly (vinylidene fluoride) (PVDF, Atochem Co., Ltd.) was selected as a polymer material constituting the spinning solution. A mixed solvent consisting of: 7 was used. At this time, the solution concentration was 13 weight%, 15 weight%, and 17 weight%, respectively.

The prepared solution is pumped using a syringe pump (KDS model 200) employed as the metering pump 10 and quantitatively transferred to the spinning nozzle pack 14 through the distribution units 11 and 12. At this time, the number of the spinneret part 15 constituting the spinneret pack 14 is arranged in two rows of ten per row, so that the total number is 20, and the discharge amount of the solution is 100 µl / min per spinneret part. The spinning nozzle unit 15 is a needle-type nozzle, the inner diameter of the body is 0.2mm, the outer diameter is 0.4mm, the length of the capillary portion 15a is 15mm, the spacing between the nozzle is 13mm, each spinning nozzle part 15 Are connected to an energizing ring 16 to be energized with each other.

The high voltage generator 13 for high voltage application uses a high voltage device (DEL GlobalTechnologies, model name: RLPS50-300P, output voltage 50KV, output current 3mA, (+) polarity) to apply a positive DC voltage in the range of 20-50KV. The spinning nozzle unit 15 and the stream control panel 17 were applied together.

The stream control panel 17 is composed of a copper plate having a thickness of 0.4 mm and a width of 15 mm. The stream control panel 17 was installed only on the left and right sides of the spinning nozzle pack 14 at a point 1 cm away from the spinning nozzle unit 15, and the position of the lower end of the stream control panel 17 was the same as that of the bottom of the spinning nozzle unit.

The electric field interference preventing plate 18 is composed of a Teflon? ((Poly) tetrafluoroethylene (PTFE)) block in which a plurality of holes are formed, and each of the radiation nozzle portions 15 is inserted into each of the holes. At this time, the lower end of the radiation nozzle unit 15 is to be protruded 20mm downward from the lower surface of the electric field interference prevention plate 18.

The wind speed measured at a distance measured at a distance of 1 cm from the filament discharged is 5 m / s, the suction air volume of the solvent suction unit 20 is 200 m 3 per hour. In addition, the collector 21 is formed of a metal plate (SUS 304) and grounded, and is configured in the form of a belt of a conventional conveyor means.

The experimental results under the above conditions are shown in Table 1 below. In addition, the radiation pattern under the above conditions is shown in FIG. As shown in Table 1, it can be seen that under the above conditions it can be produced nano-class fibers of 300 ~ 1,000nm.

Concentration (% by weight) Voltage (KV) Average fiber diameter (nm) Diameter range (nm) Example 1 13 25 850 650-950 " 2 13 30 800 400-900 "3 13 35 750 400-850 " 4 13 40 700 350-800 "5 13 50 700 300-800 "6 15 30 800 600-900 "7 15 40 800 550-900 " 8 17 35 900 650-980 "9 17 45 900 600-950 Comparative example 15 40 1500 800-2500

On the other hand, in Table 1, as a comparative example, the experimental results of the spinning state and the diameter of the fiber produced when the stream control panel 17 is not provided are described. The experimental conditions at this time correspond to the same conditions as those of the first to nine embodiments except that the stream control panel 17 is not provided.

As a result, as shown in FIG. 5, the stream state of the filament discharged from the spinning nozzle unit 15 located on the outer side of the spinning nozzle pack 14 shows a large deviation to the outside, and the stream inside is unstable. Seemed. In addition, the flow of the jet from the spinning nozzle unit 15 at an applied voltage of 30 KV or more showed severe fluctuations and could not be increased any more. The diameter of the prepared fiber was 800 ~ 2500nm as shown in Table 1, the average fiber diameter corresponds to the micron class of 1500nm.

The following is the tenth embodiment, which uses the integrated spinning nozzle pack shown in FIG. 3 so that a plurality of waterproof nozzle parts are configured as compared to the above embodiments, and performs electrospinning under various setting conditions. to be.

The polymer used was polyacrylonitrile (PAN) having a weight average molecular weight of 150,000, and the solvent was 100% dimethylformamide (DMF). The solution concentration was 13 weight%, respectively.

The prepared solution is pumped from the metering pump 10 and supplied to the spinning nozzle pack 14 of the type shown in FIG. 3 via the distribution parts 11 and 12. At this time, the number of the radiation nozzle unit 15 constituting the spinning nozzle pack 14 is composed of 10 columns of 10 pieces per row, totaling 100. The discharge amount per spinning nozzle part is 200 µl / min, the inner diameter of the body of the spinning nozzle part 15 is 0.2 mm, the outer diameter is 0.4 mm, the length of the capillary part 15a is 5 mm, and the interval between the nozzles is 5 mm. The energization of the solution is achieved by applying a high voltage to the energization plate 19a provided inside the solution accommodating part 19.

At this time, the high voltage generator 13 for voltage application is the same as that used in Examples 1 to 9, and the applied voltage is in the range of 40 to 50 KV. The stream control panel 17 used a copper plate having a thickness of 0.4 mm and a width of 100 mm, and its applied voltage was the same as that applied to the current carrying plate 19a.

Stream control panel 17 is installed at a point spaced 1cm left and right, 10cm front and rear from the spinning nozzle pack 14, so that the lower end of the stream control panel 17 is located at a point horizontally 5mm above the lower end of the spinning nozzle unit 15. Installed.

The electric field interference preventing plate 18 is a ceramic plate, and each radiation nozzle unit 15 is inserted into a through hole formed in the electric field interference preventing plate 18, and the lower end of the radiation nozzle unit 15 has an electric field interference preventing plate ( 18), it should be projected downward by 10mm from the lower surface.

The wind speed measured at a distance of 1 cm from the discharge filament is 6 m / s, and the air volume of the solvent suction device is 340 m 3 per hour. In addition, the collector 21 is formed of a metal plate (SUS 304) and is grounded in a state configured to correspond to the belt of the conveyor means.

Through the electrospinning of the present invention configured under the above conditions it was possible to stably manufacture a nano-class fiber of 300 ~ 1,000nm.

In the above, preferred embodiments of the present invention have been described with reference to the accompanying drawings. Herein, the terms or words used in the present specification and claims should not be interpreted as being limited to the ordinary or dictionary meanings, and the inventors properly define the concept of terms in order to explain their own invention in the best way. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

According to the present invention, since the stream control panel is installed around the spinning nozzle pack to control the direction of the discharge stream, it is possible to prevent the instability of the stream due to the repulsion between the charged filaments generated in the multi-nozzle configuration. Even if applied, there is an effect of obtaining a uniform stream.

In addition, since the solvent suction unit is configured to suck air between the spinneret pack and the collector, the solvent volatilization can be improved, and a uniform electric field is formed between the collector and the spinneret pack by installing an electric field interference preventing plate. .

The present invention having this advantage can be very usefully applied to mass production of high quality nano grade fibers.

Claims (13)

Solution supply unit for supplying a solution in which the polymer material to be a fiber raw material dissolved; A spinning nozzle pack comprising a plurality of spinning nozzle units receiving the solution from the solution supply unit and discharging the solution into a filament form; A voltage applying unit for charging the solution by applying a predetermined voltage to the radiation nozzle unit; It is charged with the same polarity through the voltage applying unit and installed in a symmetrical manner with the radiation nozzle pack interposed therebetween to control the unstable flow due to mutual repulsion of the charged filaments discharged from the respective radiating nozzle parts and the same polarity as the charged filament A stream control panel to which a voltage is applied to charge the battery; A collector installed at a lower side with a predetermined distance from the spinning nozzle pack, the collector being charged with a polarity opposite to that of the charged filament so that the charged filament discharged from the spinning nozzle part is integrated on an upper surface thereof; And And a solvent suction unit for sucking and exhausting a solvent from an air layer between the spinneret pack and the collector when discharging the charged filaments. The method of claim 1, And a plurality of through holes formed to insert each of the radiation nozzle parts to block electric field interference between adjacent radiation nozzle parts. The method of claim 2, The electrospinning apparatus, characterized in that the electric field interference prevention plate is made of an insulating material corresponding to any one of Teflon-based or ceramic-based. The method of claim 2 or 3, And a lower end portion of the radiation nozzle portion protrudes downward from the lower surface of the electric field interference prevention plate by a predetermined dimension. The method of claim 1, Electrospinning apparatus characterized in that the number of the radiation nozzle portion constituting the spinning nozzle pack is at least 10 per row, arranged in at least one row. The method of claim 1, Electrospinning apparatus characterized in that a voltage of 10 ~ 60KV is applied to the radiation nozzle unit and the stream control panel. The method according to claim 1 or 6, And the stream control panel is spaced apart from the spinneret pack at intervals within a range of 1 to 20 cm. The method according to claim 1 or 6, The lower end of the stream control panel, the electrospinning apparatus, characterized in that located at a point corresponding to the upper 10cm ~ 10cm lower range from the lower end of the radiation nozzle. The method according to claim 1 or 6, Electrospinning apparatus, characterized in that the distance between the lower end of the radiation nozzle and the collector in the range of 10 ~ 100cm. The method according to claim 1 or 6, Electrospinning apparatus characterized in that the solvent suction wind velocity measured at a distance of 1cm from the filament corresponds to the range of 0.1 ~ 8m / s. The method of claim 1, Electrospinning apparatus characterized in that the discharge amount of each of the spinning nozzle portion constituting the spinning nozzle pack corresponds to the range of 10 ~ 1000㎛ per minute. Providing a spinning nozzle pack comprising a plurality of spinning nozzles; Supplying a solution in which a polymer material as a fiber material is dissolved to the spinning nozzle unit; Charging the solution by applying a voltage to the spinning nozzle; Installing a charging conductor to be symmetrical with the radiation nozzle pack interposed therebetween, and applying a voltage to the charging conductor so that a charge having the same polarity as that of the charging solution is charged; And And discharging the charged filament from the spinning nozzle unit and integrating the charged filament onto the collector. The method of claim 12, And sucking and exhausting air between the spinneret pack and the collector.