KR101563599B1 - Electro-blown and electro-spinning devices of manufacture for nano fiber - Google Patents

Abstract

The present invention relates to an electrospinning electrospinning device for alternately performing electrospinning electrospinning and electrospinning electrospinning on a conveyed substrate by alternately installing an electro-blown electrospinning device and an electrospinning electrospinning device At least one spinning liquid main tank filled with a polymer spinning solution, and a pin-shaped nozzle provided inside the case so as to radiate the polymer spinning solution onto a substrate supplied from the outside, wherein a pin- A unit comprising an electro-blowing electrospinning device including a nozzle block in which a plurality of nozzle tubes are provided; At least one spinning liquid main tank filled with the polymer spinning solution and a nozzle tube body provided inside the case for electrospinning the polymer spinning solution onto a substrate to be supplied from the outside with a plurality of pin- A unit consisting of an electrospinning electrospinning device including a plurality of nozzle blocks arranged in a row; A collector disposed in each unit and spaced apart from the nozzle by a predetermined distance in order to accumulate the polymer spinning solution injected from the nozzle of each nozzle block; A voltage generating device for generating a voltage in the collector; And an auxiliary transfer device for transferring the substrate; And a unit consisting of an electroluminescent electrospinning device and an electrospinning electrospinning device are alternately and continuously arranged in a plurality of units.

Description

[0001] Electro-blown and electro-spinning devices for manufacture of nanofibers [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite electrospinning apparatus and, more particularly, to an electrospinning electrospinning apparatus and an electrospinning electrospinning apparatus, And an electrospinning electrospinning system capable of alternately carrying out electrospinning electrospinning.

Generally, a filter is classified as a liquid filter and an air filter as a filtration device for filtering foreign matters in a fluid.

Among the filters described above, the air filter has been developed in order to prevent the deterioration of high-tech products along with the development of high-tech industries, semiconductor manufacturing that removes biologically harmful substances such as particulates such as dusts, microparticles such as bacteria and fungi, bacteria, Assembly, hospitals, food processing plants, agriculture, forestry and fisheries. In addition, filters are widely used in workplaces where large amounts of dust are generated, thermal power plants, and the like.

On the other hand, a gas turbine used in a thermal power plant sucks and compresses purified air from the outside, injects the compressed air into the combustor together with the fuel, mixes the mixed air and fuel, and generates high temperature and high pressure combustion gas And is then injected into the vanes of the turbine to obtain rotational power.

Because these gas turbines are made up of very precise components, they are periodically serviced and use a pre-treatment air filter to purify the air in the air entering the compressor.

Here, the air filter is capable of supplying purified air by preventing foreign substances such as dust and dust contained in the air from penetrating into the filter media when the combustion air sucked into the gas turbine is taken in the air.

On the other hand, the term "nanofiber" refers to a microfiber having a diameter of only a few tens to several hundreds of nanometers. Nonwoven fabrics, membranes and braids composed of nanofibers, , Clothes and industrial use.

In addition, it is used in a variety of fields such as artificial leather, artificial suede, sanitary napkin, clothes, diaper, packaging materials, various kinds of materials for use in general merchandise, various filter materials, medical materials for gene delivery materials and anti-

The nanofibers as described above are produced by an electric field. That is, nanofibers generate electrical repulsive force inside a polymer material by applying a high voltage electric field to a polymer material, which is a raw material, and the nanofibers are produced and produced by breaking the molecules into a nano-sized yarn shape.

At this time, as the electric field becomes stronger, the polymer material as the raw material is finely torn, so that a nanofiber having a thinning of 10 to 1000 nm can be obtained.

As described above, the electrospinning apparatus for producing nanofibers comprises an electrospun electrospinning apparatus and an electrospinning electrospinning apparatus.

Here, the electrospinning electrospinning device is a structure for simultaneously spraying the polymer spinning solution and the compressed air during electrospinning of the polymer spinning solution, and the electrospinning electrospinning device has a structure of electrospinning the polymer spinning solution.

At this time, it is possible to manufacture a nanofiber web having a relatively large diameter through the electrospinning polymer spinning solution, and the electrospinning electrospinning device is capable of producing a nano- Fabric webs are possible.

For this reason, in manufacturing a nanofiber web having a relatively large diameter, an electrospinning electrospinning device is applied to manufacture a nanofiber web having a small diameter by applying an electrospinning electrospinning device to manufacture a nanofiber or nanofiber filter Respectively.

On the other hand, an electrospinning electrospinning device for producing a nanofiber web of coarse diameter, or an electrospinning electrospinning device for producing a nanofiber web of fine diameter, When a nanofiber or nano-fiber filter is manufactured by laminating a nanofiber web having a small diameter or a large diameter, the strength of a voltage supplied to the electroblown electrospinning device or the electrospinning electrospinning device is controlled, The diameter of the nanofiber web to be laminated and formed is narrowed or formed thick.

However, when the nanofiber web having a large diameter or the nano-fiber web having a relatively small diameter or a large diameter is laminated to a nanofiber web having a large diameter or a nanofiber web having a small diameter as described above, it is troublesome to adjust the intensity of the supplied voltage.

In order to solve the above problems, when a nanofiber web having a small diameter is laminated on a nanofiber web having a large diameter, a nanofiber web having a large diameter is laminated through an electro- A nanofiber web having a diameter which is thinner on the nanofiber web through an electrospinning electrospinning device is laminated to form a nanofiber or nanofiber filter and when a nanofiber web of coarse diameter is laminated on a nanofiber web of a small diameter , A nanofiber web is laminated with a fine diameter through an electrospinning electrospinning device, a nanofiber web of thick diameter is laminated on a nanofiber web of fine diameter through an electroblot electrospinning device to form a nanofiber web or a nanofiber filter , But the electroblown electrospinning device or the electrospinning electrospinning device A nanofiber web or a fine-diameter nanofiber web is laminated on the laminated nanofiber web, and a nanofiber web or a nanofiber web having a larger diameter is laminated on the laminated nanofiber web, There is a problem that the manufacturing process of the semiconductor device is complicated and troublesome.

In addition, as described above, both of the electro-spinning electrospinning device and the electrospinning electrospinning device are required for manufacturing a nanofiber or nanofiber filter having various diameters and laminated by a plurality of layers, There is a problem in that manufacturing cost and product cost are increased and it is difficult to mass-produce nanofiber or nanofiber filter due to complicated manufacturing process.

On the other hand, there is a demand for an electrospinning device capable of producing nanofibers or nanofiber filters in large quantities and continuously, having not only electrical stability but also nanofibers or nanofiber filters of various materials, diameters and kinds And the characteristics of each nanofiber or nanofiber filter manufactured through the electrospinning device are different. Therefore, there is a demand for a product having various characteristics depending on the final product.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the problems described above, and it is an object of the present invention to provide an electrospinning electrospinning device and an electrospinning electrospinning device alternately, It is an object of the present invention to provide a composite electrospinning device for manufacturing nanofibers which can alternately perform electrospinning and electrospinning electrospinning.

In addition, the present invention is applicable to the electrospinning of nanofiber webs having different diameters or different diameters by alternately installing an electro-blown electrospinning device and an electrospinning electrospinning device This makes it possible to manufacture nanofibers or nanofiber filters of various materials and diameters, and it is possible to form a laminate of nanofiber webs of different diameters without any difference in the strength and voltage of the voltage, and also to provide an electro- Which is complementary to one another, and which is capable of producing and producing advanced nanofibers or nanofiber filters. The present invention also provides a composite electrospinning device for manufacturing nanofibers.

Further, the present invention provides a method of electrospinning a nanofiber web by electrospinning the same or different kinds of polymer spinning solution on a substrate in each unit by introducing a unit concept into an electrospinning device, Which is capable of mass production of nanofibers and nanofiber filters by laminating a nanofiber web having a diameter larger than that of the nanofibers.

According to an aspect of the present invention, there is provided an electrospinning device for manufacturing nanofibers, comprising: at least one spinning liquid main tank filled with a polymer spinning solution; And a nozzle block including a plurality of nozzle tubes arranged in a longitudinal direction and having a plurality of pin-shaped nozzles formed in a double pipe shape in a longitudinal direction; At least one spinning liquid main tank filled with the polymer spinning solution and a nozzle tube body provided inside the case for electrospinning the polymer spinning solution onto a substrate to be supplied from the outside with a plurality of pin- A unit consisting of an electrospinning electrospinning device including a plurality of nozzle blocks arranged in a row; A collector disposed in each unit and spaced apart from the nozzle by a predetermined distance in order to accumulate the polymer spinning solution injected from the nozzle of each nozzle block; A voltage generating device for generating a voltage in the collector; And an auxiliary transfer device for transferring the substrate; And a unit consisting of an electroluminescent electrospinning device and an electrospinning electrospinning device are alternately and continuously arranged in a plurality of units.

Preferably, the method further includes a spinning solution recovery path for recovering the polymer spinning solution that overflows in the nozzle block of each unit, a regeneration tank for storing the polymer spinning solution recovered in connection with the spinning solution recovery path, An overflow device including an intermediate tank connected to the tank by a transfer pipe and to which the polymer solution is transferred, the polymer solution is supplied to the nozzle block from the intermediate tank through a supply pipe; As shown in FIG.

Alternatively, a condenser for condensing and liquefying the VOC generated in each unit, a distiller for distilling and liquefying the condensed and liquefied VOC through the condenser, and a storage for storing the liquefied solvent in the distiller A VOC recycling apparatus for recycling and recycling a solvent in a storage tank containing a VOC distilled and liquefied in a distillation apparatus into a polymer spinning solution; As shown in FIG.

In this case, the upper part of the case is made of an insulator and the lower part is made of a conductor, so that the upper and lower parts of the case are mutually coupled.

Preferably, the thickness of the nanofiber web that is provided on the back end of each unit and is ejected onto the substrate conveyed by ultrasonic waves is measured, and the feed speed of the substrate and the speed of the voltage generator A thickness measuring device for adjusting the thickness of the nanofiber web by regulating the voltage intensity; As shown in FIG.

Here, the air permeability of the nanofiber web, which is provided at the last end of each unit and is jetted onto the substrate by ultrasonic waves, is measured, and the feeding speed of the substrate and the voltage intensity of the voltage generator are controlled according to the measured air permeability of the nanofiber web An air permeability measuring device for controlling the air permeability of the nanofiber web; As shown in FIG.

On the other hand, a buffer section formed between a unit in which the electrospinning electrospinning apparatus is installed and a unit in which the electrospinning electrospinning apparatus is installed, a pair of support rollers for supporting the substrate on the buffer section, A substrate conveying speed regulating device which includes at least one or more regulating rollers which are movably provided between the upper and lower rollers and on which a substrate is wound, the substrate conveying speed regulating device controlling the conveying speed of the substrate by vertical movement of the regulating rollers; As shown in FIG.

At this time, the temperature control device is formed in a spiral shape on the periphery of each nozzle tube body of the nozzle block, and is formed in a hot line shape to control the temperature of the polymer solution to be supplied into the nozzle tube body. .

On the other hand, the polymer spinning solution is electrospun in the inner tube provided in each nozzle of the nozzle tube body arranged in a plurality of nozzle blocks of the unit composed of the electro blowing electrospinning device, and at the same time, And the polymer spinning solution is electrospun from each nozzle of the nozzle tube body arranged in a plurality of nozzle blocks of the unit of the electrospinning electrospinning device.

A nanofiber web having a large diameter is laminated on each nozzle of a unit made of an electroluminescent electrospinning device on a substrate, and fine roughening is performed on each of the nozzles of the electrospinning electrospinning unit on the nano- ≪ / RTI > nanofibrous webs are laminated, and the above process is repeated alternately.

As described above, according to the present invention having the above-described structure, the electro-spinning electrospinning device and the electrospinning electrospinning device are alternately installed to form nanofibers having diameters different from each other. It is possible to form a laminate of a web and to electrospinning different kinds of polymer spinning liquids, thereby making it possible to manufacture a nanofiber or nanofiber filter having various diameters and materials. In addition, electro- It is possible to manufacture and produce advanced nanofiber or nanofiber filters that are complementary but complementary to each other because electrospinning is simultaneously applied to one process.

The present invention also provides a method of manufacturing a nanofiber web or a nanofiber filter, wherein the process of manufacturing the nanofiber or nanofiber filter is simple, and the diameter of the nanofiber web It is possible to form a laminate, thereby reducing the device cost, the manufacturing cost, and the product cost, enabling mass production of the nanofiber or nanofiber filter, and having electrical stability.

According to the present invention, the electrospinning device is applied as a unit concept, and a plurality of units are interconnected to manufacture a nanofiber or nanofiber filter, whereby a series of polymer spinning solutions of the same or different kinds on the substrate It is possible to manufacture nanofibers or nanofiber filters of various materials, diameters and kinds by enabling electrospinning, and it is also possible to manufacture nanofiber or nanofiber filters having various materials, shapes and various properties required in the field Effect can be obtained.

1 is a side view schematically showing a composite electrospinning apparatus according to the present invention,
Fig. 2 is a plan view schematically showing a nozzle block of an electrospinning electrospinning apparatus installed in a unit of a composite electrospinning apparatus according to the present invention, Fig.
3 is a side cross-sectional view schematically showing a nozzle of an electrospinning electrospinning device installed in a unit of a composite electrospinning apparatus according to the present invention,
Fig. 4 is a plan view schematically showing a nozzle block of an electrospinning electrospinning device installed in a unit of the complex electrospinning device according to the present invention, Fig.
5 is a side cross-sectional view schematically showing a nozzle of an electrospinning electrospinning device installed in a unit of a composite electrospinning apparatus according to the present invention,
6 is a front sectional view schematically showing a state in which an electric heater is installed in a nozzle body of a nozzle block installed in each unit of the composite electrospinning apparatus according to the present invention,
7 is a sectional view taken along line A-A '
8 is a view schematically showing an auxiliary transfer device of the complex electrospinning apparatus according to the present invention,
9 is a view schematically showing another embodiment of the auxiliary belt roller of the auxiliary transfer device according to the present embodiment,
FIGS. 10 to 13 are side views schematically showing the operation of the apparatus for controlling the substrate conveyance speed of the complex electrospinning apparatus according to the present invention. FIG.
14 is a view showing a process of the operation of the flip device of the combined type electrospinning device, taken along the line B-B '
15 is a view showing the operation of the flip device of the combined electrospinning device, which is a cross-sectional view taken along line C-C '
16 is a view showing the operation of the flip device of the complex electrospinning device, which is a cross-sectional view taken along the line D-D '
17 is a sectional view taken along the line E-E 'of FIG. 17 showing the operation of the flip device of the complex electrospinning device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the scope of the present invention, but is merely an example, and various modifications can be made without departing from the technical spirit of the present invention.

FIG. 1 is a side view schematically showing a composite electrospinning apparatus according to the present invention, FIG. 2 is a plan view schematically showing a nozzle block of an electrospinning electrospinning apparatus installed in a unit of a composite electrospinning apparatus according to the present invention, Fig. 3 is a side cross-sectional view schematically showing a nozzle of an electrospinning electrospinning apparatus installed in a unit of the composite electrospinning apparatus according to the present invention, and Fig. 4 is a cross- 5 is a side cross-sectional view schematically showing a nozzle of an electrospinning electrospinning device installed in a unit of the combined electrospinning device according to the present invention, and Fig. 6 is a cross- Of the nozzle block installed in each unit of the complex electrospinning apparatus 7 is a cross-sectional view taken along line A-A 'of FIG. 7, FIG. 8 is a view schematically showing an auxiliary transfer device of the combined electrospinning apparatus according to the present invention, and FIG. 9 FIGS. 10 to 13 are schematic views showing the operation of the apparatus for controlling the conveying speed of the substrate conveying speed of the complex electrospinning apparatus according to the present invention. FIG. 10 is a schematic view showing another embodiment of the auxiliary belt roller of the auxiliary conveying apparatus according to the present embodiment. 14 is a cross-sectional view taken along the line B-B 'of FIG. 14, showing the operational process of the flip device of the combined electrospinning device, and FIG. 16 is a cross-sectional view taken along the line D-D 'in FIG. 16, and FIG. 17 is a cross-sectional view taken along line B-C' of FIG. A diagram illustrating the operation of the flip-value devices, a line E-E 'cross-section.

As shown in the drawing, the complex electrospinning apparatus 1 according to the present invention includes at least one or more units 10a, 10b, 10c, and 10d sequentially spaced apart from each other, , 10c, and 10d, a polymeric spinning solution of the same material is individually electrospun, or a polymer spinning solution having a different material is electrospun individually to produce a filter material such as a nanofiber or a nanofiber filter.

In one embodiment of the present invention, the complex electrospinning device 1 is formed as a bottom-up electrospinning device, but it may also be a top-down electrospinning device (not shown).

In the embodiment of the present invention, four units 10a, 10b, 10c and 10d of the composite electrospinning apparatus 1 are provided, but the number of the units 10a, 10b, 10c and 10d is 2 Or more, but is not limited thereto.

Each of the units 10a, 10b, 10c and 10d of the combined electrospinning device 1 is filled with a spinning liquid main tank 8 and a spinning liquid main tank 8 in which the polymer spinning solution is filled. (Not shown) for supplying the polymeric spinning solution in a predetermined amount and a polymer spinning solution filled in the spinning solution main tank 8, and a nozzle tube body 12 having a plurality of nozzles 12 in a pin shape, A collector 13 spaced apart from the nozzle 12 by a predetermined distance in order to accumulate a polymer spinning solution electrosprayed in the nozzle 12 of the nozzle tube 40 and a nozzle block 11 in which a plurality of nozzle blocks 40 are arranged, And voltage generating devices 14a, 14b, 14c, and 14d for generating a voltage in the collector 13.

According to the structure as described above, the composite electrospinning device 1 according to the present invention is characterized in that the polymer spinning liquid to be filled in the spinning liquid main tank 8 is continuously and constantly supplied to the nozzle block 11 through the metering pump, The polymer spinning solution supplied to the nozzle block 11 is injected and focused on the collector 13 having a high voltage through the plurality of nozzles 12 and is sprayed onto the substrate 15 conveyed on the collector 13 A nanofiber web is laminated to form a nanofiber or nanofiber filter.

Each of the units 10a, 10b, 10c and 10d of the combined type electrospinning apparatus 1 is provided with units 10a and 10c composed of an electro-blown electrospinning apparatus (not shown) Electro-spinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning Electrospinning electrospinning

At this time, the nozzles 12 of the nozzle tube body 40, which are arranged in a plurality of nozzle blocks 11a in the units 10a, 10c of the electro-magnetic electrospinning device, And each nozzle 12 of the nozzle tube body 40 disposed at a rear end of the nozzle tube body 40 and arranged in a plurality of nozzle blocks 11b in the units 10b and 10d made of an electrospinning electrospinning device, And a spinning solution is sprayed.

To this end, the nozzle 12 provided in the nozzle tube 40 of the unit 10a, 10c made of the electro-blowing electrospinning device is composed of a double pipe type nozzle, and the unit 10b made of the electrospinning electrospinning device And 10d is composed of a nozzle having a single tube shape.

10b, 10c, and 10d of the combined electrospinning device 1 by the above-described structure, and the nozzles (not shown) in the units 10a and 10c of the electro- 12, the polymer spinning solution and the compressed air are simultaneously injected, and the polymer spinning solution is electrospun in the nozzle 12 in the unit 10b, 10d made of the electrospinning electrospinning device while being positioned at the rear end.

That is, a nozzle (not shown) disposed in the form of a double pipe in the units 10a, 10c of the electrospinning electrospinning device and located at the tip of each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1 The polymeric spinning liquid is electrospun in the inner tube 12a of the inner tube 12a and the polymeric spinning liquid and the compressed air are simultaneously injected in the outer tube 12b such that the compressed air is injected to the lower side of the inner tube 12a, In the nozzles provided in the single tube type in the units 10b and 10d made of the electrospinning electrospinning device, only the polymer solution is electrospun.

By the above-described structure, nanofiber webs of large diameter are laminated on a substrate conveyed through the composite electrospinning device 1, and nanofiber webs of different diameters are laminated and formed. The web can be repeatedly laminated.

That is, a nanofiber web having a large diameter is formed on the substrate 15 by spraying the polymer spinning solution and compressed air with the nozzle 12 of the unit 10a made of the electro-blowing electrospinning device, The polymer spinning solution is injected into the nozzle 12 of the unit 10b composed of the electrospinning electrospinning device on the base material 15 on which the nano fiber web of large diameter is laminated through the unit 10a made of the high- (10a, 10c) and electrospinning (10a, 10b), which are alternately provided by alternately stacking a nanofiber web having a small diameter on a nanofiber web having a large diameter stacked on a substrate (15) A nanofiber web having a large diameter and a nanofiber web having a small diameter are repeatedly laminated through units 10b and 10d made of an electrospinning device to form nanofibers or It is made of a no-fiber filter.

At this time, in order to control the diameter of the nanofiber web, each of the voltage generators 14a, 14b provided in the units 10b, 10d composed of the units 10a, 10c made of the electroblown electrospinning device and the electrospinning electrospinning device, 14b, 14c and 14d, the nanofiber web of coarse diameter and the nanofiber web of fine diameter are injected through each device.

In one embodiment of the present invention, in order to laminate nanofiber webs of large diameter on a base material 15 and then to laminate nanofiber webs of fine diameters again, the composite electrospinning device 1 is applied to an electro- And a unit 10b composed of an electrospinning electrospinning device are alternately provided in this order. However, after a thin nanofiber web having a small diameter is laminated on the base material 15, In order to laminate the web, it is also possible that the composite electrospinning device 1 is installed in the order of a unit 10b composed of an electrospinning electrospinning device and a unit 10a composed of an electrospinning electrospinning device .

In an embodiment of the present invention, the composite electrospinning device 1 includes units 10a and 10c made of an electro-blown electrospinning device and an electrospinning electrospinning device Units 10b and 10d are alternately repetitively provided so that nanofiber webs of large diameter are laminated on base material 15 and then nanofiber webs of small diameter are laminated and a large diameter nanofiber web The composite type electrospinning device 1 is constituted by an electro-blown electrospinning device, and the units 10a and 10c, which are made of an electro-blown electrospinning device, Units 10b and 10d made of an electrospinning electrospinning device are successively provided at the rear end of the base 15 and a continuous nano island And a structure in which nanofiber webs having a small diameter are continuously laminated on the nanofiber web having a large diameter after laminating the nonwoven webs.

In the unit 10a located at the foremost end among the units 10a, 10b, 10c and 10d of the composite electrospinning device 1, a feed roller 12 for feeding the base material 15 into the unit 10a is provided. The base material 15 supplied to each of the units 10a, 10b, 10c, and 10d by the supply roller 3 is electrospun and the nanofiber web having a large diameter and the fine diameter A plurality of nano-fiber webs are stacked in a multilayered structure and a plurality of nano-fiber webs are stacked on the rear side of the unit 10d positioned at the rearmost end of each unit 10a, 10b, 10c, Up roller 5 is provided.

In the units 10a, 10b, 10c and 10d of the composite electrospinning device 1, the substrate 15 to be fed and fed through the feed roller 3 is fed to the take-up roller 5 side At the same time, an auxiliary conveying device 16 for regulating the conveying speed of the substrate 15.

The composite electrospinning device 1 is provided with a main control device 7 which includes a nozzle block 11 installed in each of the units 10a, 10b, 10c and 10d, an auxiliary transfer device 16 and the voltage generating devices 14a, 14b, 14c and 14d and controls the thickness measuring device 70, the substrate conveying speed adjusting device 30 and the air permeability measuring device 80 to be described later .

On the other hand, a laminating apparatus 90 for laminating the nanofiber web electrified on the base material 15 through each unit 10a, 10b, 10c, 10d of the composite electrospinning apparatus 1 is provided in each unit After the unit 10d located at the rear end of the composite fiber 10a, 10b, 10c, and 10d, and after the nano fiber web electrospun through the composite type electrospinning device 1 by the laminating device 90 .

As described above, the base material 15 (15a, 15b, 15c, 15d) is formed by alternately stacking a nanofiber web of large diameter and a nanofiber web of fine diameter while passing through each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1. [ ) Is preferably made of nonwoven fabric or fabric, but is not limited thereto.

At this time, the material of the polymer solution to be radiated through each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1 is not particularly limited. For example, polypropylene (PP), polyethylene terephthalate (PET), polyvinylidene fluoride, nylon, polyvinyl acetate, polymethylmethacrylate, polyacrylonitrile (PAN), polyurethane (PUR), polybutylene terephthalate (PBT), polyvinyl butyral, (PEI), poly (vinylidene chloride), polyvinyl chloride, polyethyleneimine, polyolefin, polylactic acid (PLA), polyvinyl acetate (PVAc), polyethylene naphthalate (PEN) Polypropylene (PP) materials and heat-resistant polymeric materials such as polyamide, polyimide, polyamideimide, and poly (meth) acrylate, The meta- Aromatic polyesters such as polyethylene terephthalate and polyethylene naphthalate, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene, , Polyphosphazenes such as polybis [2- (2-methoxyethoxy) phosphazene], polyurethane copolymers including polyurethane and polyether urethane, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate It is preferable that the polymer is a polymer.

The polymer spinning solution supplied through the nozzles 12 of each of the units 10a, 10b, 10c, and 10d is a solution in which a polymer as a synthetic resin material capable of electrospinning is dissolved in an appropriate solvent. It is not limited as long as it can dissolve it.

For example, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, isopropyl, n-butyl, isobutyl, sec-butyl, Isobutyl alcohol, isopropyl alcohol, methyl alcohol, ethanol, aliphatic compounds such as hexane, tetrachlorethylene, acetone, and glycol groups such as propylene glycol, diethylene glycol, isobutyl ketone, methyl ethyl ketone, aliphatic hydroxyl group, m- Ethylene glycol, and halogen compounds such as trichlorethylene, dichloromethane, aromatic compounds toluene, xylene, alicyclic compounds such as cyclohexanone, cyclohexane and esters such as n-butyl acetate, ethyl acetate, aliphatic ether Butyl cellosolve, acetic acid 2-ethoxy ethanol, 2-ethoxy ethanol, amide dimethyl formamide, dimethylacetamide, etc. And, it is possible to use a mixture of a plurality kinds of solvents. The polymer spinning solution preferably contains, but is not limited to, an additive such as a conductivity improver.

Here, an overflow device 200 is provided in the combined electrospinning device 1. That is, the solution main tank 8, the second conveyance pipe 216, the second conveyance control unit 218 and the intermediate tank 220 (220) are connected to the units 10a, 10b, 10c and 10d of the combined electrospinning apparatus 1, And a regeneration tank 230 are provided in the overflow device 200, respectively.

10b, 10c, and 10d of the combined electrospinning device 1, the overflow device 200 is provided in each of the units 10a, 10b, 10c, 10d may be integrally connected to the overflow device 200 and the overflow device 200 may be integrally connected to any one of the units 10a, An overflow device 200 is provided in units 10a and 10c provided with an electro-magnetic electrospinning unit among the units 10a, 10b, 10c and 10d or a unit 10cb, 10d may be provided with the overflow device 200. [

An overflow device 200 is provided in a unit 10a of each unit 10a, 10b, 10c, and 10d of the complex type electrospinning apparatus 1 and equipped with an electroluminescent electrospinning device, A unit in which the electromagnetically-driven electrospinning device of the remaining unit 10c is integrally connected to the device 200 or the unit in which the electrospinning electrospinning device of each of the units 10a, 10b, 10c and 10d is provided 10b are provided with an overflow device 200 and the electrospinning electrospinning device of the remaining unit 10d is integrally connected to the overflow device 200. [

With the above structure, the units 10a, 10c and the units 10b, 10c, 10b, 10c, 10d, 10b, 10c, 10b, 10c, and 10d, the polymer spinning solution to be a raw material of the nanofiber or nanofiber filter is stored in the spinning liquid main tank 9, respectively. The spinning liquid main tank 8 is provided therein with a separate stirring device 211 for preventing separation and coagulation of the polymer spinning solution.

The second transfer pipe 216 includes a pipe connected to the spinning liquid main tank 8 or the regeneration tank 230 and valves 212 213 and 214, The polymer spinning solution is transferred from the spinning liquid main tank 8 or the regeneration tank 230 filled with the polymer spinning solution to the intermediate tank 220.

The second conveyance control unit 218 controls the conveyance operation of the second conveyance pipe 216 by controlling the valves 212, 213 and 214 of the second conveyance pipe 216.

The valve 212 controls the transfer of the polymer solution to the intermediate tank 220 from the spinning solution main tank 8 filled with the polymer solution for spinning, The valve 214 controls the amount of the polymer solution to be introduced into the intermediate tank 220 from the spinning solution main tank 8 and the regeneration tank 230 .

As described above, the liquid surface height of the polymer spinning solution measured through the second sensor 222 provided in the intermediate tank 230 to be described later is controlled by the control of the valves 212, 213, and 214.

The intermediate tank 220 separately stores the polymer spinning solution supplied from the spinning solution main tank 8 or the regeneration tank 230 filled with the polymer spinning solution and supplies the polymer spinning solution to the nozzle block 11 And a second sensor 222 for measuring the liquid level of the supplied polymer solution.

Here, the second sensor 222 is preferably a sensor capable of measuring the liquid level of the polymer solution, such as an optical sensor or an infrared sensor, but is not limited thereto.

A supply pipe 240 and a supply control valve 242 for supplying the polymer solution for supplying the polymer solution to the nozzle block 11 are provided in the lower part of the intermediate tank 220. The supply control valve 242 is connected to the supply pipe And controls the supplying operation of the polymer spinning solution through the supply pipe 240.

The regeneration tank 230 is provided with a stirring device 231 for storing the polymer spinning solution recovered by the overflow separately and for preventing the separation and coagulation of the polymer spinning solution.

Here, the first sensor 232 is preferably a sensor capable of measuring the liquid level of the polymer solution, such as an optical sensor or an infrared sensor, but is not limited thereto.

The polymer solution for overflowing in the nozzle block 11 is recovered through a solution recovery path 250 provided below the nozzle block 11 and the solution recovery path 250 is connected to the first transfer pipe 251 to recover the polymer spinning solution in the recovery tank 230.

The first transfer pipe 251 includes a pipe (not shown) connected to the regeneration tank 230 and a pump (not shown), and the polymer spinning solution is circulated through the solution return path (250) to the regeneration tank (230).

At this time, it is preferable that the regeneration tank 230 is provided at least more than one, and when the regeneration tank 230 is provided in two or more, the first sensor 232 and the valve 233 are provided in a plurality of .

When the number of the regeneration tanks 230 is two, the number of the valves 233 located above the regeneration tank 230 corresponds to the number of the regeneration tanks 230. Accordingly, the first transfer control device (not shown) Controls the two or more valves 233 positioned at the upper part according to the height of the liquid level of the first sensor 232 provided in the regeneration tank 230 so that the polymer solution is supplied to the regeneration tank 230 of the plurality of regeneration tanks 230 ).

Meanwhile, the combined electrospinning device 1 is provided with a VOC recycling apparatus 300. That is, VOC (Volatile Organic Compounds) generated during injection of the polymer spinning solution through the nozzles 12 of the nozzle block 11 provided in each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1 : A condenser 310 for condensing and liquefying the volatile organic compounds), a distillation unit 320 for distilling and liquefying the condensed VOC through the condenser 310, and a liquefied solvent A VOC recycling apparatus 300 including a solvent storage device 330 for storing a solvent.

Here, the condenser 310 is preferably a water-cooled, evaporative or air-cooled condenser, but is not limited thereto.

The vaporized VOC generated in each of the units 10a, 10b, 10c and 10d is introduced into the condenser 310 and the VOC in the liquefied state generated in the condenser 310 is supplied to the solvent storage device Pipes 311 and 331 are connected to each other. That is, pipes 311 and 331 for interconnecting the units 10a, 10b, 10c and 10d and the condenser 310, the condenser 310 and the solvent storage unit 330 are connected to each other .

In an embodiment of the present invention, the VOC is condensed through the condenser 310, and the condensed and liquefied VOC is supplied to the solvent storage device 330. However, the condenser 310 and the solvent storage It is also possible that a distillation apparatus 320 is provided between the apparatuses 330 so as to separate and sort each solvent when more than one solvent is applied.

Here, the VOC recycling apparatus 330 for recycling the VOC generated in each of the units 10a, 10b, 10c, and 10d is provided to separately store and recycle the VOC generated during the electrospinning of the polymer spinning solution .

Meanwhile, the distillation apparatus 320 is connected to the condenser 310 to vaporize the VOC in the liquefied state by the high-temperature heat and cool it again to supply the liquefied VOC to the solvent storage apparatus 330.

In this case, the VOC recycling apparatus 300 discharges the VOC through the units 10a, 10b, 10c, and 10d, and supplies the air and the cooling water to the condensing apparatus for condensing and liquefying the vaporized VOC 310 and a condenser 310 to convert the VOC into a vaporized state and then cooling the vaporized VOC to a liquefied state, and a distillation apparatus 320 for storing the liquefied VOC And a solvent storage device 330 for storing the solvent.

Here, the distillation apparatus 320 is preferably a fractionation apparatus, but it is not limited thereto.

The respective units 10a, 10b, 10c and 10d and the condenser 310, the condenser 310 and the distillation unit 320 and the distillation unit 320 and the solvent storage unit 330 are interconnected Pipes 311, 321, and 331 are connected to each other.

On the other hand, the content of the solvent in the polymer spinning solution recovered in the regeneration tank 230 after overflowing is measured, and the content of the solvent is measured by extracting a part of the polymer spinning solution in the recovery tank 230 as a sample, And the analysis and measurement of the polymer solution are carried out by a known method.

When the solvent is required according to the measurement result as described above, the VOC in the liquefied state generated in the electrospinning of the polymer spinning solution is supplied to the solvent storage device 330 by the pipe 332, (230). That is, the liquefied VOC is supplied to the regeneration tank 230 by a required amount according to the measurement result, and is reused and recycled as a solvent.

It is preferable that the case 18 constituting each unit 10a, 10b, 10c and 10d of the composite electrospinning apparatus 1 is made of a conductor, but the case 18 may be made of an insulator, The conductor 18 and the insulator may be used in combination, or may be made of various other materials.

It is also possible that the insulating member 19 is removed when the upper portion of the case 18 is made of an insulator and the lower portion thereof is used in combination as a conductor. To this end, the case 18 is preferably formed as a case 18 by being coupled with a lower part formed of a conductor and an upper part formed of an insulator, but the present invention is not limited thereto.

As described above, the case 18 is formed of a conductor and an insulator, and the upper part of the case 18 is formed of an insulator so that the collector 18 is separately provided for mounting the collector 13 on the inner surface of the upper part of the case 18 It is possible to eliminate the insulating member 19, which can simplify the structure of the apparatus.

It is also possible to optimize the insulation between the collector 13 and the case 18 so that when 35 kV is applied between the nozzle block 11 and the collector 13 for electrospinning, It is possible to prevent the breakdown of the insulation that may occur between the electrode 18 and other members.

In addition, the leakage current can be stopped within a predetermined range, the current supplied from the voltage generators 14a, 14b, 14c and 14d can be monitored, the abnormality of the combined electrospinning device 1 can be detected early, As a result, the composite electrospinning device 1 can be continuously operated for a long time, the production of nanofibers having required performance is stable, and mass production of nanofibers is possible.

Here, the thickness a of the case 18 formed of an insulator is made to satisfy "a = 8 mm".

Therefore, when 40 kV is applied between the nozzle block 11 and the collector 13 to perform electrospinning, an insulation breakdown that may occur between the collector 13 and the case 18 and other members And the leakage current can be limited within a predetermined range.

The distance between the inner surface of the case 18 formed of an insulator and the outer surface of the collector 13 is smaller than the thickness a of the case 18 and the distance between the inner surface of the case 18 and the outer surface of the collector 13 The distance "b" is made to satisfy "a + b = 80 mm".

Therefore, when 40 kV is applied between the nozzle block 11 and the collector 13 to perform electrospinning, an insulation breakdown that may occur between the collector 13 and the case 18 and other members And the leakage current can be limited within a predetermined range.

On the other hand, the combined electrospinning device 1 is provided with a thickness measuring device 70. That is, the thickness of the nanofiber web laminated by the polymer spinning solution electrospun electromagnetically at the rear end of each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1, The thickness of the nanofiber web laminated by the polymer spinning solution electrospun in the electrospinning electrospinning device is measured and the feed speed V of the base material 15 and the nozzle block 11 are controlled according to the measured thickness A thickness measuring device 70 for measuring the thickness of the wafer.

The thickness of the nanofiber web laminated on the substrate 15 after the polymer spinning solution is electrospun in each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1 by the above- Decelerates the conveying speed V of each of the units 10a, 10b, 10c and 10d or increases the discharge amount of the polymer spinning solution radiated from the nozzle block 11, The thickness of the nanofiber web laminated on the base material 15 can be increased by adjusting the voltage intensity of the nanofibers 14a, 14b, 14c, and 14d to increase the discharge amount of the polymer spinning solution per unit area.

On the other hand, when the thickness of the nanofiber web laminated on the substrate 15 after the polymer spinning solution is electrospun in each unit 10a, 10b, 10c, 10d of the composite electrospinning device 1 is measured to be thicker than the reference value The discharge speed of the polymeric spinning solution discharged from the nozzle block 11 is reduced and the voltage generating devices 14a, 14b, 14c, and 14d are driven to accelerate the transfer speeds V of the units 10a, 10b, 10c, 14c, and 14d to reduce the discharge amount of the polymer spinning solution per unit area, so that the thickness of the nanofiber web laminated on the substrate 15 can be reduced.

Here, the thickness measuring device 70 is disposed so as to face the upper and lower surfaces of the substrate 15 through the inlet and the outlet, and the distance to the upper or lower portion of the substrate 15 by the ultrasonic measuring method (Not shown) for measuring an ultrasonic longitudinal wave, and a pair of ultrasonic longitudinal wave measuring methods.

The thickness of the nanofiber web laminated on the base material 15 can be calculated through the distance measured by the thickness measuring device 70, which is an ultrasonic measurement method.

That is, the thickness measuring device 70 projects the ultrasonic longitudinal wave and the transverse wave to the substrate 15 on which the nanofiber web is laminated, so that the time when each ultrasonic signal of the longitudinal wave and the transverse wave travels on the substrate 15, The propagation time of longitudinal waves and transverse waves, the propagation time of longitudinal waves and transverse waves at the reference temperature of the substrate 15 on which the nanofiber webs are laminated, The thickness of the nanofibrous web can be calculated by calculating the thickness of the subject from the equation.

By calculating the thickness of the substrate 15 on which the nanofiber web is laminated, the thickness can be precisely measured by self-compensating for the error caused by the variation of the propagation speed with temperature change even when the internal temperature is uniform, It is possible to measure a precise thickness regardless of the type of temperature distribution inside the fiber web.

On the other hand, the composite electrospinning device 1 is provided with an air permeability measuring device 80. 10b, 10c, and 10d through the units 10a, 10b, 10c, and 10d at the rear of the unit 10d positioned at the rearmost end of each unit 10a, 10b, 10c, and 10d of the composite electrospinning apparatus 1. [ The air permeability measuring device 80 measures the air permeability of the nano-fiber web by ultrasonic waves. The air permeability measuring device 80 measures the air permeability of the nano-fiber web.

The substrate 15 to be supplied to the air permeability measuring apparatus 80 after the polymer spinning solution is radiated through the units 10a, 10b, 10c and 10d of the composite electrospinning apparatus 1 and the nanofiber web is laminated 10b, 10c, and 10d when the measured air permeability of the nanofiber web is measured to measure the measured value in accordance with the ultrasonic signal projected from the air permeability measuring apparatus 80, 14b, 14c, and 14d by increasing the discharge amount of the nozzle block 11 and increasing the discharge amount of the polymer spinning solution per unit area by controlling the voltage intensities of the voltage generating devices 14a, 14b, 14c, and 14d, The volume of the spinning liquid is increased and the air permeability is reduced.

The substrate 15 to be supplied to the air permeability measuring device 80 after the polymer spinning solution is radiated through the units 10a, 10b, 10c and 10d of the composite electrospinning device 1 and the nanofiber web is laminated, 10b, 10c, 10d of the respective units 10a, 10b, 10c, 10d when measuring the measured value in accordance with the ultrasonic signal projected from the air permeability measuring apparatus 80 and measuring the air permeability of the measured nanofibrous web to be small, 14b, 14c, 14d by adjusting the voltage intensity of the voltage generating devices 14a, 14b, 14c, 14d to reduce the discharge amount of the polymer spinning solution per unit area, The amount of the polymer spinning solution is reduced so as to increase the air permeability.

As described above, by measuring the air permeability of the nanofiber web and controlling the feeding speed of each unit 10a, 10b, 10c, 10d and the nozzle block 11 according to the air permeability, It is possible to manufacture.

Here, when the air permeability deviation P of the nanofiber web is less than a predetermined value, the feed speed V is not changed from the initial value, and when the deviation amount P is equal to or larger than the predetermined value, Can be changed from the initial value, and it is possible to simplify the control of the conveyance speed (V) by the conveyance speed (V) control device.

It is also possible to control the discharge amount and the voltage of the nozzle block 11 in addition to the control of the feed speed V so that the discharge amount and the voltage intensity of the nozzle block 11 When the deviation amount P is equal to or greater than a predetermined value, the discharge amount and the voltage intensity of the nozzle block 11 are changed from the initial values, Can be simplified.

Here, the polymer spinning solution is electrospinned between the units 10a and 10c equipped with the electrospinning electrospinning device of the combined electrospinning device 1 and the units 10b and 10d provided with the electrospinning electrospinning device A substrate conveying speed regulating device 30 for regulating the conveying speed of the substrate 15 is provided.

To this end, the substrate conveying speed regulating device 30 includes units 10a and 10c provided with an electroluminescent electrospinning device of the combined electrospinning device 1 and units 10b and 10d provided with an electrospinning electrospinning device. A pair of support rollers 33 and 33 'provided on the buffer zone 31 and supporting the substrate 15 and a pair of support rollers 33 and 33' And an adjusting roller 35 provided between the driven roller 35 and the driven roller 35.

At this time, the support rollers 33 and 33 'are disposed in units 10a and 10c provided with an electro-magnetic electrospinning device, and the substrate 15 conveyed to the units 10b and 10d equipped with the electrospinning electrospinning device And is provided on the line and the rear end of the buffer section 31, respectively.

The adjustment roller 35 is provided between the pair of support rollers 33 and 33 'and is wound around the base 15 and moved up and down by the adjustment roller 35, The feeding speed and the moving time of the substrates 15a and 15b between the units 10a and 10c equipped with the blowing electric spinning device and the units 10b and 10d equipped with the electrospinning electric spinning device are adjusted.

To this end, a sensor (not shown) for sensing the feeding speed of the substrates 15a and 15b is provided between the units 10a and 10c equipped with the electro-spinning electrospinning device and the units 10b and 10d equipped with the electrospinning electrospinning device. (Not shown), and between the units 10a and 10c equipped with the electro-magnetic electrospinning device sensed by the detection sensor and the units 10b and 10d equipped with the electrospinning electrospinning device, , 15b) is connected to the main control device (7) for controlling the movement of the regulating roller (35) according to the conveying speed.

In one embodiment of the present invention, the conveying speeds of the substrates 15a and 15b between the units 10a and 10c equipped with the electro-blowing electrospinning device and the units 10b and 10d equipped with the electrospinning electrospinning device are detected And the main controller 7 controls the movement of the regulating roller 35 in accordance with the conveying speed of the sensed substrates 15a and 15b. However, in order to transfer the substrates 15a and 15b, 13 and detects the driving speed of an auxiliary belt 16a or an auxiliary belt roller 16b or a motor (not shown) for driving the auxiliary belt 16a to be described later, 7 may be configured to control the movement of the adjustment roller 35.

A flip device 110 (not shown) for rotating the base material 15 between the unit 10b and the unit 10c located in the middle among the units 10a, 10b, 10c and 10d of the composite electrospinning device 1, .

That is, the unit 10a in which the electro-magnetic electrospinning device is installed and the unit 10b in which the electrospinning electrospinning device is installed among the units 10a, 10b, 10c and 10d of the combined electrosupply device 10 A substrate 15 on which a nano-fiber web having a large diameter and a nano-fiber web having a relatively small diameter are laminated is formed on the lower surface of the substrate 15 so that the nano- A nanofiber web having a large diameter and a nanofiber web having a relatively small diameter are laminated in two layers while passing through a unit 10c in which an electrospinning electrospinning device is installed and a unit 10d in which an electrospinning electrospinning device is installed A flip device is provided.

Here, the flip device 110 is formed as a cylindrical body having a hollow interior, and guide grooves 112 and 112 'for inserting both ends of the base material 15 on the inner periphery on both sides in the horizontal direction at the center thereof. The left and right guide members 111 and 111 'are formed so as to protrude inwardly.

The left guide member 111 of the left and right guide members 111 and 111 'protruding inwardly from the inner periphery of the flip device 110 is formed to extend upwardly along the inner circumference and then to extend downward The right guide member 111 'is extended in the downward direction along the inner circumference and then upwardly formed so as to extend in the upward direction so that the left guide member 111' The base material 15 inserted into the guide grooves 112 and 112 'of the left and right guide members 111 and 111' is guided by the left and right guide members 111 and 111 ' 180 < / RTI >

The guide grooves 112 and 112 'formed in the left and right guide pieces 111 and 111' are formed to correspond to the width of the nanofiber web laminated on the substrate 15 and the substrate 15 And it is preferable that the width of the guide grooves 112 and 112 'is variable depending on the thickness of the product to be manufactured.

An embodiment of the present invention is characterized in that the flip device 110 is provided between the unit 10b and the unit 10c located in the middle among the units 10a, 10b, 10c and 10d of the combined type electrospinning device 1 The flip device 110 is provided between all the units 10a, 10b and 10c and the units 10b, 10c and 10d so as to rotate the substrate 15 repeatedly The polymeric spinning solution may be electrospun on both sides of the base material 15.

Here, a dryer (not shown) for spraying hot air, hot air, steam, or the like is connected to the flip device 110 so that the substrate 15 is rotated and dried through the flip device 110 Do.

6 to 7, in each nozzle tube 40 of the nozzle block 11 provided in each unit 10a, 10b, 10c, 10d of the combined electrospinning device, An apparatus 41 is provided.

That is, in the nozzle tube 40 of the nozzle block 11, which is installed in each of the units 10a, 10b, 10c, and 10d and to which the polymer spinning solution is supplied by a plurality of nozzles 12 provided on the unit, And a temperature control device 41 for controlling the temperature of the usage liquid.

Herein, the flow of the polymer solution in the nozzle block 11 is transmitted from the spinning liquid main tank 8 in which the polymer spinning solution is stored through the spinning liquid flow pipe (not shown) 40).

The polymer spinning solution supplied to the nozzle tube 40 of the nozzle block 11 is injected and electrospun through a plurality of nozzles 12 to be laminated on the substrate 15 with a nanofiber web. At this time, the plurality of nozzles 12, which are spaced apart from each other at a predetermined interval in the longitudinal direction, on the nozzle tube 40 of the nozzle block 11 and the respective nozzle tubes 40 are electrically connected As shown in Fig.

The temperature control device 41 controls the temperature control of the polymeric spinning solution supplied to the nozzle tube 40 of the nozzle block 11 and the temperature control of the polymer spinning solution Respectively. A temperature control device 41 in the form of a hot line is formed on the periphery of the nozzle tube 40 of the nozzle block 11 in a spiral shape around the inner periphery of the nozzle tube body 40 and supplied to and introduced into the nozzle tube body 40 Adjust the temperature of the polymer spinning solution.

In the embodiment of the present invention, the temperature control device 41 is spirally arranged in the form of a hot wire on the periphery of the nozzle tube 40 of the nozzle block 11, And the temperature control device 41 may be provided on the inner peripheral radial direction of the nozzle tube 40 in the longitudinal direction to control the temperature of the polymer solution. And may be provided at the inner periphery of the nozzle tube 40 to adjust the temperature of the polymer solution.

The nozzle tube 40 and the temperature control device 41 are connected to the main controller 7 to adjust the temperature of the plurality of nozzle tubes 40 provided in the respective nozzle blocks 11, And controls and controls the temperature of the polymer spinning solution under the control of the main control device (7).

8, the substrate 15 to be fed into and fed into each unit 10a, 10b, 10c, and 10d of the composite electrospinning apparatus 1 is fed, The auxiliary conveying device 16 for controlling the conveying speed includes auxiliary belts 12a and 12b which rotate in synchronization with the conveying speed of the substrate 15 so as to facilitate the detachment and conveyance of the substrate 15 in each unit 10a, 10b, 10c, And an auxiliary belt roller 16b for supporting and rotating the auxiliary belt 16a.

The auxiliary belt 16a is rotated by the rotation of the auxiliary belt roller 16b and the substrate 15 is rotated by the rotation of the auxiliary belt 16a by the units 10a, 10b, 10c, 10d. To this end, one of the auxiliary belt rollers 16b is rotatably connected to a motor (not shown).

In the embodiment of the present invention, five auxiliary belt rollers 16b are provided on the auxiliary belt 16a, and one of the auxiliary belt rollers 16b is rotated by the operation of the motor to rotate the auxiliary belt 16a At the same time, the remaining auxiliary belt rollers 16b are rotated. However, the auxiliary belt 16a is provided with two or more auxiliary belt rollers 16b, and one of the auxiliary belt rollers 16b is rotated by the operation of the motor , So that the auxiliary belt 16a and the remaining auxiliary belt roller 16b are rotated.

Meanwhile, in the embodiment of the present invention, the auxiliary conveying device 16 is composed of an auxiliary belt roller 16b and an auxiliary belt 16a that can be driven by a motor. However, as shown in FIG. 9, It is also possible that the roller 16b is made of a roller having a low coefficient of friction so that the roller is rotated by a small force in which the base material 15 is fed and fed.

At this time, it is preferable that the auxiliary belt roller 16b is composed of a roller including a bearing having a low friction coefficient, so that the motor can be removed.

The auxiliary conveying device 16 is composed of the auxiliary belt 16a and the auxiliary belt roller 16b having a low coefficient of friction but only the roller having a low friction coefficient excluding the auxiliary belt 16a So that the substrate 15 can be transported.

In addition, in the embodiment of the present invention, the auxiliary belt roller 16b is applied with a roller having a low coefficient of friction. However, any roller having a low coefficient of friction is not limited in its shape and configuration, It is also possible to apply rollers including bearings such as roller bearings, sliding bearings, sleeve bearings, fluid pressure journal bearings, hydrostatic journal bearings, pneumatic bearings, air bearing bearings, air static bearings and air bearings, It is also possible to apply a roller having a reduced coefficient of friction by including a material and an additive.

Hereinafter, the operation of the combined electrospinning apparatus according to the present invention will be described with reference to FIGS. 1 to 17. FIG.

First, the base material 15 is fed through the feeding roller 3 provided at the front end of the composite electrospinning device 1 according to the present invention to the best of the units 10a, 10b, 10c and 10d of the electrospinning device 1 And is introduced into and supplied to the unit 10a located at the end.

The substrate 15 to be fed into and fed into the unit 10a of the electrospinning device 1 through the feeding roller 3 is connected to a collector of an electroluminescence electrospinning device (not shown) And a high voltage of the voltage generating devices 14a, 14b, 14c and 14d is generated on the collector 13 through the nozzle 12 and the substrate 15 on the collector 13 on which a high voltage is generated, The polymer spinning solution filled in the spinning solution main tank 8 is electrospun into the nozzle block 11 through the inner tube of the nozzle 12 having a double tube shape and is provided outside the nozzle block 11 in the form of wrapping the inner tube The compressed air is radiated through the outer tube.

Here, when the polymer spinning solution is electrospun in the inner tube 12a of the nozzle 12 having a double tube shape during electrospinning through the unit 10a made of the electro-blown electrospinning device, The polymer spinning solution and the compressed air are injected at the same time such as compressed air is blown from the base material 12b to form a nanofiber web having a large diameter on the base material 15. [

The base material 15, which has passed through the unit 10a made of the electro-magnetic electrospinning device and has a large diameter nanofiber web laminated, is positioned at the rear end of the base material 15, and a unit made of an electrospinning electrospinning device (not shown) (10b).

The nanofiber web of relatively small diameter is laminated by electrospinning the polymer spinning solution from the nozzle 12 having a single tube shape on the base material 15 fed to the unit 10b of the electrospinning electrospinning device . That is, nanofiber webs of a large diameter are laminated through a unit 10a made of the electro-blowing electrospinning device, and then electro-spinning electrospinning devices (not shown) are formed on the nanofiber webs of coarse- The nanofiber web having a relatively small diameter is laminated in a multilayer structure.

As described above, a nanofiber web having a large diameter is laminated on a base material 15 through a unit 10a made of the electro-blowing electrospinning device, and a unit 10b made of the electrospinning electrospinning device is formed. A nanofiber web having a relatively small diameter is formed on the nanofiber web having a large diameter through a large diameter and a nanofiber web having a large diameter and a small diameter is electrodeposited on a substrate 15 on which a multi- A nano-fiber web having a large diameter and a small diameter is laminated and formed on the base material 15 through a unit 10c composed of a high-frequency electrospinning device and a unit 10d composed of an electrospinning electrospinning device. A fibrous web and a nanofiber web having a relatively small diameter are alternately repeatedly laminated.

In an embodiment of the present invention, each of the units 10a, 10b, 10c and 10d of the combined type electrospinning apparatus 1 includes units 10a and 10c formed of an electro-blown electrospinning device, (10b) and (10d) composed of an electrospinning electrospinning device. The nanofiber web having a large diameter and the nanofiber web having a relatively small diameter are alternately repeated on the base material (15) Units 10b and 10d made of an electrospinning electrospinning device and electromagnets 10b and 10d are attached to the respective units 10a to 10d of the composite electrospinning device -blown) units 10a and 10c composed of an electrospinning device in order of alternately repeatedly stacking a nanofiber web of a small diameter and a nanofiber web having a relatively large diameter on the substrate 15 Done It is possible.

Here, the polymer spinning solution to be filled in the spinning solution main tank 8 is continuously supplied in a constant amount into a plurality of nozzles 12 to which a high voltage is applied through a metering pump (not shown) The supplied polymer spinning solution is irradiated on the substrate 15 while being radiated and focused on the collector 13 with a high voltage applied thereto through the nozzle 14, and the nanofiber web is laminated.

The base material 15 flowing into and feeding into the unit 10a located at the tip of each unit 10a, 10b, 10c and 10d of the composite electrospinning device 1 is operated by a motor (not shown) To the unit 10b positioned at the rear end thereof by the auxiliary belt roller 16b of the auxiliary feeding device 16 which is driven by the auxiliary belt 16b and the auxiliary belt 16a driven by the rotation of the auxiliary belt roller 16b, 10b, 10c, and 10d by the operation of the auxiliary transfer device 16 provided in the respective units 10a, 10b, 10c, and 10d, The above process is repeated such that the same type or different kinds of polymer spinning solution is electrospinned on the substrate 15 to be introduced and fed, and the nanofiber web is laminated on the substrate 15 to form the nanofiber or nanofiber filter .

The overflowing polymer spinning solution in the nozzle block 11 provided in each of the units 10a, 10b, 10c and 10d by the overflow device 200 provided in the combined electrospinning device 1 is supplied to the nozzle block Is recovered through a spent liquid recovery path (250) provided at the lower part of the tank (11), and the recovered polymer spinning solution is reused and recycled again.

The VOC recycling apparatus 300 provided in the composite electrospinning apparatus 1 can control the amount of VOCs generated during the electrospinning of the polymer spinning solution through the nozzles 12 in the units 10a, 10b, 10c, Reuse and reuse.

That is, VOCs in the vaporized state generated during the electrospinning of the polymer spinning solution on the substrate 15 through the nozzles 12 in the respective units 10a, 10b, 10c and 10d are supplied through the pipes 311 and 331 The vaporized VOC discharged into the condenser 310 is condensed and is changed into a liquefied state and is then stored in the solvent storage 330. The VOC stored in the solvent storage 330 Are recycled and reused.

As described above, the vaporized VOC generated in each of the units 10a, 10b, 10c, and 10d of the combined electrospinning device 1 and discharged to the condenser 310 is cooled in the condenser 310 And then cooled and condensed by a cooling method such as air cooling or evaporation to change the liquid state to a liquefied state. Thereafter, the condensed liquefied VOC is condensed through the condenser 310, and then the liquefied VOC is distilled by the distillation apparatus 320, The VOCs in the liquefied state transferred to the distillation apparatus 320 are sequentially vaporized in accordance with the difference in boiling point by the heat of high temperature and the vaporized VOCs are separated and classified by the solvent and discharged as liquefied .

At this time, the liquefied VOC which is distilled through the distillation unit 320 is vaporized in the order of the solvent having a low boiling point and the solvent having a high boiling point. That is, the VOC in the liquefied state is evaporated in the order of lower boiling point, and the vaporized and liquefied VOC is discharged to the piping 311, 321, and 331 provided in the lower direction from the piping provided in the upper direction of the distillation apparatus 320 And is supplied to each solvent storage device 330.

In this way, the VOCs composed of various kinds of mixed solvents are classified according to the respective solvents at the time of discharge and classified into the respective solvent storage units 330, and classified into the respective solvents, classified into the solvents stored in the solvent storage unit 330 Is again added to the spinning solution as a solvent to be reused and recycled.

The base material 15 on which the polymer spinning solution is electrospun through the respective units 10a, 10b, 10c and 10d of the composite electrospinning device 1 and on which the nanofiber webs are laminated is mounted on each unit 10a, 10b, 10c, and 10d, the thickness is measured while passing through the thickness measuring device 70 positioned at the rear end.

That is, the coarse-diameter electrospinning device 1 of the present invention has a coarse-diameter electrospinning device 10a, 10b, 10c, and 10d of the composite electrospinning device 1 while passing through the unit 10a in which the electro- A unit 10c in which a nanofiber web of fine diameter and a re-electro-spinning electrospinning device are installed are laminated on a nano-fiber web having a large diameter while passing through a unit 10b in which a nanofiber web and an electrospinning electrospinning device are installed Diameter nano-fiber web while being passed through a unit 10d in which a thick-diameter nano-fiber web and an electrospinning electrospinning device are installed while passing through a nano- Measure the thickness of the nanofiber web.

Here, when passing through the thickness measuring apparatus 70, ultrasonic longitudinal waves and transverse waves are projected together by the thickness measuring apparatus 70, and the time for which each ultrasonic signal of the longitudinal wave and the transverse wave travels on the base 15, Measure each propagation time.

Then, from the predetermined calculation formula using the measured propagation time of the longitudinal wave and the transverse wave, the propagation speed of the longitudinal wave and the transverse wave at the reference temperature of the substrate 15 on which the nanofiber web is laminated, and the temperature constants of the longitudinal wave and transverse wave propagation velocity, The thickness of the nanofiber web laminated on the substrate 15 is measured by calculating the thickness of the nanofiber web.

The thickness of the nano-fiber web or the nano-fiber web of large diameter, which is laminated on the base material 15 passing through each unit 10a, 10b, 10c, and 10d through the thickness measuring device 70, When the thickness of each nanofiber web is measured to be thinner than the reference value, the feed speed V of the next unit 10b, 10c or 10d or the specific unit 10b, 10c or 10d is decreased, By increasing the discharge amount per unit area of the polymer spinning solution electrospun in each nozzle block 11 by adjusting the voltage intensities of the specific voltage generating devices 14a, 14b, 14c and 14d or the specific voltage generating devices 14a, 14b, 14c and 14d, The thickness of the fibrous web is thickened.

It is also possible to measure the thickness of a nanofiber web of large diameter or a nanofiber web of fine diameter laminated on the substrate 15 passing through each unit 10a, 10b, 10c, 10d through the thickness measuring device 70 The thickness of each nanofiber web is measured to be thicker than the reference value to increase the feed rate V of the next unit 10b, 10c or 10d or the specific unit 10b, 10c or 10d, The voltage intensity of each of the devices 14a, 14b, 14c and 14d or the specific voltage generating devices 14a, 14b, 14c and 14d is adjusted to reduce the discharge amount per unit area of the polymer spinning solution electrospun in each nozzle block 11 The thickness of the nanofiber web is made thin.

If the conveying speed of the substrate 15 passing through the thickness measuring device 70 is fast or slow, the conveying speed of the substrate 15 through the auxiliary conveying device 16 of the substrate conveying speed adjusting device 30 To control the speed of the substrate 15 being conveyed.

That is, the detection speed of the substrate 15a in the unit 10a, 10b, 10c located at the tip of each unit 10a, 10b, 10c, 10 to 11, when the unit 10a, 10b, 10c located at the rear end is detected to be faster than the feeding speed of the base material 15b in the units 10b, 10c, 10d positioned at the rear end, The adjusting roller 35 which is provided between the pair of supporting rollers 33 and 33 'in the buffer section 31 and in which the base material 15 is wound is provided to prevent the substrate 15a conveyed in the buffer section 31 from being sagged 10b, 10c (10a, 10b, 10c) positioned at the front end of the base material 15 conveyed to the units 10b, 10c, 10d positioned at the rear end in the units 10a, ) To pull out the substrate 15a which is excessively conveyed to the buffer zone 31 located between the units 10 and 10 ' The substrate 15a is subjected to the correction control so that the transfer speed of the substrate 15a in the unit 10a, 10b, 10c which is positioned at the succeeding stage becomes equal to the transfer speed of the substrate 15b in the unit 10b, 10c, Thereby preventing sagging and wrinkling of the toner.

On the other hand, when the detection sensor detects that the units 10b, 10c, 10d in which the conveying speed of the base material 15a in the unit 10a, 10b, 10c located at the front end of each unit 10a, 10b, 10c, 12 to 13, when the substrate 15b conveyed in the units 10b, 10c, 10d positioned at the rear end is torn (as shown in Figs. 12 to 13) The adjustment roller 35 is disposed between the pair of support rollers 33 and 33 'in the buffer zone 31 so as to prevent the substrate 15 from being wound up, 10b and 10c positioned at the front end of the base material 15 conveyed to the units 10b, 10c and 10d located at the rear end in the respective units 10a, 10b and 10c, 10b, 10c, and 10d, the base material 15a wound on the adjustment roller 35 is wound around the units 10b, 10c, 10d so that the feeding speed of the base material 15a in the units 10a, 10b, 10c located at the front end and the feeding speed of the base material 15b in the units 10b, 10c, 10d positioned at the rear end are the same Thereby preventing breakage of the substrate 15b.

By controlling the feeding speed of the substrate 15b to be fed into the units 10b, 10c and 10d located at the rear end of each of the units 10a, 10b, 10c and 10d by the above-mentioned structure, 10b, 10c, 10d, 10b, 10c positioned at the leading end of the substrate 15b in the units 10b, 10c, 10d located at the rear end of the substrates 10a, 10b, Can be obtained.

On the other hand, the feeding roller 3 is rotated by the flip device 110 provided between the units 10b, 10c positioned at the center of each unit 10a, 10b, 10c, 10d of the composite electrospinning apparatus 1, And the substrate 15 having passed through the units 10a and 10b is rotated so that the upper surface thereof is rotated downward to be positioned and the lower surface thereof is rotated and positioned, So that the upper and lower surfaces are reversed.

That is, as shown in Figs. 14 to 17, the polymer spinning solution is electrospun through the respective units 10a and 10b of the composite electrospinning device 1, and the nanofiber web is laminated The substrate 15 is formed so as to protrude inwardly on the inner circumferences of both sides in the horizontal direction of the flip device 110 positioned at the rear end of the unit 10b, Is rotated 180 degrees while being conveyed along the left and right guide members 111 and 111 'having the grooves 112 and 112' so that the upper and lower surfaces thereof are reversed to the lower and upper positions.

At this time, the base material 15 is conveyed upward along the left guide member 111 out of the guide members 111 and 111 'protruding inward from the inner periphery of the flip device 110 at either end And the other end of the base material 15 is transported downward along the right guide member 111 'and then transported upward again, The substrate 15 inserted into the guide grooves 112 and 112 'of the left and right guide members 111 and 111' is positioned on the left and right guide members 111 and 111 ' And is rotated by 180 °.

With the structure as described above, the unit 10a in which the electrospinning electrospinning device of the composite electrospinning device 1 is installed and the unit 10b in which the electrospinning electrospinning device is installed, A unit 10c in which a nano-sized fiber web of diameter and a nano-fiber web of a relatively thin diameter are laminated in two layers and an electroblown electrospinning device positioned at the rear end side is rotated by 180 °, The polymer spinning solution is electrospinned on the upper surface of the base material 15 located at the lower part by rotation so that the nanofiber web is laminated on the upper surface of the base material 15, .

That is, by rotating the base material 15 by 180 ° by the flip device 110, the electro-magnetic electrospinning device among the units 10a, 10b, 10c, and 10d of the composite electrospinning device 1 is installed A nanofiber web having a large diameter and a nanofiber web having a small diameter are laminated on one side of the base material through a unit 10a and a unit 10b in which an electrospinning electrospinning device is installed and then an electro- A nanofiber web having a large diameter and a nanofiber web having a small diameter are laminated on the other side of the base material through a unit 10c and a unit 10d in which an electrospinning electrospinning device is installed. A nanofiber web having a small diameter can be laminated in multiple layers.

An embodiment of the present invention is characterized in that the flip device 110 is provided between the unit 10b and the unit 10c located in the middle among the units 10a, 10b, 10c and 10d of the combined type electrospinning device 1 The flip device 110 is provided between all the units 10a, 10b and 10c and the units 10b, 10c and 10d so as to rotate the substrate 15 repeatedly The polymeric spinning solution may be electrospun on both sides of the base material 15.

As described above, the polymer spinning solution is electrospun while passing through each unit 10a, 10b, 10c, and 10d of the composite electrospinning device 1, so that a nanofiber web having a large diameter and a nanofiber web The substrate 15 which is laminated alternately is repeatedly subjected to a post-process of laminating through a laminating apparatus 90, and is manufactured as a final product.

On the other hand, the substrate 15 laminated through the laminating device 90 is measured by the air permeability measuring device 80 and the air permeability of the substrate 15 is measured through the units 10a, 10b, 10c, The nanofiber web having a large diameter and a small diameter is repeatedly arranged, and the air permeability of the nanofiber webs alternately laminated is measured. Then, the feeding speed V of the base material 15 and the nozzle block 11 are controlled according to the measured values Adjust the air permeability of the nanofiber web.

That is, the nanofiber webs having a large diameter and a small diameter are laminated on the substrate 15 through the units 10a, 10b, and 10c of the composite electrospinning device 1, When the air permeability of the fibrous web is largely measured, the feed speed V of the next unit 10b, 10c or 10d is decreased or the voltage intensity of the voltage generating devices 14a, 14b, 14c and 14d is adjusted, 10b and 10c to form a laminate on the substrate 15 by increasing the discharge amount per unit area of the substrate 11 by increasing the amount of the polymer solution to be laminated on the substrate 15, The transfer speed V of the next unit 10b, 10c or 10d is increased or the voltage strength of the voltage generators 14a, 14b, 14c and 14d is adjusted So that the discharge amount per unit area of the nozzle block 11 is reduced and the amount of the polymer spinning solution Reduced by largely forming an air permeability.

After the air permeability of the nanofiber web laminated on the substrate 15 is measured, the conveying speed of the substrate 15 in the units 10a, 10b, 10c, and 10d and the conveying speed of the nozzle block 11 ), It is possible to produce a nanofiber web having a uniform air permeability.

In the present invention, the combined electrospinning device 1 is a downward type electrospinning device, and four units 10a, 10b, 10c, and 10d are sequentially provided, and the units 10a, 10b, 10c, A thickness measuring device 70 and a substrate conveyance speed regulating device 30 are provided at the rear end of each of the units 10a and 10b and a flip device 110 is provided between the units 10b and 10c located at the center side, The composite electrospinning device 1 may be a bottom-up electrospinning device, and the units 10a, 10b, 10c and 10d may be provided with a laminating device 90 and a ventilation rate measuring device 80 at the rear end thereof. 10b, 10c, and 10d may be formed of four or more, and a thickness measuring device 70, a substrate conveyance speed sensor (not shown) may be provided between the units 10a, 10b, 10c, At least one of the adjusting device 30, the flip device 110, the laminating device 90, and the air permeability measuring device 80 To be non-preferable.

In the embodiment of the present invention, the units 10a, 10b, 10c and 10d of the combined type electrospinning apparatus 1 are connected to the units 10a and 10c in which the electrospinning electrospinning device is installed, The units 10a, 10b, 10c and 10d are provided with units 10b and 10d in which the electrospinning electrospinning apparatus is installed and the units 10b and 10d in which the electrospinning electrospinning apparatus is installed, The units 10a and 10c may be provided in this order.

Although the overflow device 200 and the VOC recycling device 300 are simultaneously provided in the combined electrospinning device 1 in the embodiment of the present invention, the overflow device 200 and the VOC recycling device 300 May be separately provided.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. Anyone with it will know easily.

1: composite electrospinning device, 3: feed roller,
5: take-up roller, 7: main control device,
8: solution main tank, 10a, 10b, 10c, 10d: unit,
11, 11a, 11b: a nozzle block, 12: a nozzle,
13: Collector,
14, 14a, 14b, 14c and 14d: voltage generating device,
15, 15a, 15b: substrate, 16: auxiliary transfer device,
16a: auxiliary belt, 16b: auxiliary belt roller,
18: case, 19: insulating member,
21, 25: supply pipe, 23, 27: valve,
30: substrate conveyance speed regulating device, 31: buffer section,
33, 33 ': support roller, 35: regulating roller,
40: nozzle tube, 41: temperature control device,
70: thickness measuring device, 80: air permeability measuring device,
90: laminating device, 110: flip device,
111: left guide member, 111 ': right guide member,
112, 112 ': guide groove, 200: overflow device,
211, 231: stirring device, 212, 213, 214, 233: valve,
216: second transfer pipe, 218: second transfer control device,
220: intermediate tank, 222: second sensor,
230: regeneration tank, 232: first sensor,
240: supply piping, 242: supply control valve,
250: solution recovery path, 251: first transfer piping,
300: VOC recycling apparatus, 310: condensing apparatus,
311, 321, 331, 332: piping, 320: distillation device,
330: solvent storage device.

Claims (10)

An electrospinning device for producing nanofibers,
At least one spinning liquid main tank filled with a polymer spinning solution, and a plurality of pin-shaped nozzles provided in a case inside the case so as to radiate the polymer spinning solution onto a substrate supplied from the outside, A unit comprising an electro-blowing electrospinning device including a nozzle block in which a plurality of nozzle tubes are arranged;
At least one spinning liquid main tank filled with a polymer spinning solution and a nozzle tube body provided inside the case for electrospinning the polymer spinning solution on a substrate to be supplied from the outside, A unit comprising an electrospinning electrospinning device including a nozzle block in which a plurality of nozzle blocks are arranged;
A collector disposed in each of the units, the collector being spaced apart from the nozzle by a predetermined distance in order to collect the polymer spinning solution injected from the nozzles of the nozzle blocks;
A voltage generator for generating a voltage in the collector;
A condenser for condensing and liquefying the VOC generated in each unit;
A distillation device for distilling and liquefying the condensed VOC through the condensing device;
A storage device for storing the liquefied solvent in the distillation apparatus; A VOC recycling apparatus for reusing and recycling a solvent in a storage tank into which a VOC distilled and liquefied in the distillation apparatus is classified and stored as a polymer spinning solution;
And,
Characterized in that a plurality of units consisting of the unit consisting of the electroblown electrospinning device and the electrospinning electrospinning device are alternately and continuously arranged alternately.
The method according to claim 1,
A recovery tank for storing the polymer spinning solution recovered in connection with the spinning solution recovery path, a recovery tank for storing the polymer spinning solution recovered in the spinning solution recovery path, An overflow device including an intermediate tank connected to the nozzle block by a transfer pipe and to which the polymer solution is fed, wherein the polymer solution is supplied to the nozzle block from the intermediate tank through a supply pipe;
The composite electrospinning apparatus for manufacturing nanofibers according to claim 1,
delete The method according to claim 1,
Wherein the upper part of the case is made of an insulator and the lower part is made of a conductor and the upper and lower parts of the case are coupled to each other.
The method according to claim 1,
The thickness of the nanofiber web that is provided on the back end of each unit and is ejected onto the substrate transferred by the ultrasonic waves is measured and the transfer speed of the substrate and the voltage intensity of the voltage generator are determined according to the thickness of the nanofiber web measured A thickness measuring device for regulating the thickness of the nanofiber web;
The composite electrospinning apparatus for manufacturing nanofibers according to claim 1,
The method according to claim 1,
Measuring the air permeability of the nanofiber web sprayed on the substrate by ultrasonic waves and controlling the feeding speed of the substrate and the voltage intensity of the voltage generator according to the measured air permeability of the nanofiber web, An air permeability measuring device for controlling the air permeability of the nanofiber web;
The composite electrospinning apparatus for manufacturing nanofibers according to claim 1,
The method according to claim 1,
A buffer section formed between a unit in which the electrospinning electrospinning device is installed and a unit in which the electrospinning electrospinning device is installed; a pair of support rollers for supporting the base material on the buffer section; A substrate conveyance speed regulating device including at least one or more regulating rollers which are installed between the rollers so as to be movable upward and downward and in which the substrate is wound, the substrate conveyance speed regulating device controlling the conveyance speed of the substrate by the vertical movement of the regulating rollers;
The composite electrospinning apparatus for manufacturing nanofibers according to claim 1,
The method according to claim 1,
A thermostat control device formed in a spiral shape on the periphery of each nozzle tube body of the nozzle block and formed in a hot line shape to regulate the temperature of the polymeric spinning solution supplied into the nozzle tube body;
And a composite electrospinning device for manufacturing nanofibers.
The method according to claim 1,
The polymer spinning solution is electrospun in the inner tube provided in each nozzle of the nozzle tube body arranged in a plurality of nozzle blocks of the unit composed of the electro blowing electrospinning device and at the same time, And a polymer spinning solution is electrospinning from each nozzle of a nozzle tube body arranged in a plurality of nozzle blocks of a unit of the electrospinning electrospinning device.
The method of claim 9,
A thick nano fiber web is stacked on each of the nozzles of a unit made of an electro-blown electrospinning device on the substrate, and a fine diameter nano fiber web is formed on each of the nozzles of the unit made of the electrospinning electrospinning device, Of the nanofibers are laminated, and the above-mentioned steps are repeated alternately.

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