CN103484953A - Disc-type needle-free electrostatic spinning device - Google Patents
Disc-type needle-free electrostatic spinning device Download PDFInfo
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- CN103484953A CN103484953A CN201310414922.2A CN201310414922A CN103484953A CN 103484953 A CN103484953 A CN 103484953A CN 201310414922 A CN201310414922 A CN 201310414922A CN 103484953 A CN103484953 A CN 103484953A
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Abstract
The invention discloses a needle-free electrostatic spinning device capable of continuously producing nanofiber membranes in large scale, and provides an electrostatic spinning technique capable of effectively improving output and evenness of electrostatic spinning. The technical scheme includes adopting discs with special structures as spinning units, applying voltage to each spinning unit by a polytetrafluoroethylene rotating shaft with an internal wire to enable electric fields among the spinning units to be more even, and controlling liquid carrying quantity of spinning points by a height-adjustable circular-arc-shaped polytetrafluoroethylene shield to guarantee even nanofiber fineness and save electric energy. The needle-free electrostatic spinning device has the advantages that through the polytetrafluoroethylene rotating shaft with the internal wire, the special disc structures and the height-adjustable circular-arc-shaped polytetrafluoroethylene shield, electric fields among the spinning units can be distributed evenly, fiber fineness evenness and output of the nanofiber membranes can be effectively improved, and the defects of uneven electric field, proneness to blocking of needles, difficulty in cleaning and the like of conventional multi-needle equipment are overcome; the needle-free electrostatic spinning device is adopted, productivity and evenness are effectively improved, cost can be reduced, and industrialized popularization of the electrostatic spinning technique is facilitated.
Description
Technical field
The present invention relates to electrostatic spinning technique, be specially a kind of disc type needle-less electrostatic spinning apparatus.
Technical background
Electrostatic spinning is to utilize electrostatic field force to carry out drawing-off to the spinning jet, forms a kind of method of nano-fiber for production of non-woven; This technology, as a kind of nanofiber production method the most commonly used, has obtained research widely in recent years, and it is low, simple and be applicable to the advantage such as most of polymer that it has a cost.The fiber of its product fineness between nanometer and micron, and be deposited on receiving system with unordered shape, form the micro nanometer fiber net/film of similar non-weaving cloth shape, can be used for a plurality of high-tech areas of filtering material, biomedical material, chemical sensor, battery diaphragm.
Electrostatic spinning technique, as the effective method of current continuous production polymer nanofiber, has many advantages, but more difficult accomplishing scale production.The scale electrostatic spinning technique is divided into two classes at present, one class is the Multi needle electrostatic spinning technique, TOPTECH company that the company of representative is Finetex Technology Inc. with German Freudenburg Nonwovens, the U.S., eSpin Technologies, NanoMatrix, Korea S etc.; Another kind of is the needle-less electrostatic spinning technique, the Donaldson Company that the company of representative is the U.S. and the Elmarco company of Czech (nanometer spider).There is the easily problem of electric field serious interference (End effect phenomenon), the horizontal gage distortion of electrospinning film etc. between stifled, poor efficiency low yield, many jets of syringe needle in existing Multi needle electrospinning device; Existing needle-less electrospinning device (nanometer spider) is although the syringe needle blockage problem that does not exist conventional electrostatic to spin, output has improved much than needle-based electrostatic spinning device, but exist, the gained fiber thickness is irregular, fiber is partially thick, power consumption is large, product quality is difficult to the problems such as control.
Summary of the invention
The deficiency existed for existing electrostatic spinning scale equipment, the technical scheme that the present invention intends adopting is: design a kind of disc type needle-less electrostatic spinning apparatus.This device comprises an inner wall type solution pool, has electric energy and the effect that prevents electric leakage of saving; Adopt the disc type spinneret, there is the effect of even blend spinning solution, control fibre fineness; Also comprise the high performance plastics rotating shaft of inner conductors, can apply respectively voltage to each spinning disk, and save electric energy, reduce electric field and disturb; This device special design the circular arc radome, can control the sample path length that spinning station is put, make the nanofiber fineness even, and save electric energy.
The technical scheme that the present invention solves the electrospinning device scale is: design a kind of disc type needle-less scale electrostatic spinning nano fabric nonwoven cloth production equipment, this equipment mainly comprises: solution pool 55, high performance plastics rotating shaft 85, spinning disk 80, radome 75, high voltage source 10, defeated lace curtaining 15, ground connection target electrode plate 40, air intake device 35, transmission device 25, antisliding apparatus 50 etc.
Described solution pool 55 inner wall layer are comprised of high performance plastics, have electric energy and the effect that prevents electric leakage of saving; Solution pool 55 adopts circular-arc design, and interior diameter is a bit larger tham the diameter of spinning disk 80, has the effect of conservation and homogeneous solution; Can the difference between injection pump 120 and reflux pump 125 be controlled according to the output of equipment, can accurately be controlled the solution content in solution pool, and solution is flowed thereupon, prevented polymer deposition.
Described high performance plastics rotating shaft adopts polytetrafluoroethylene (PTFE), polyphenylene sulfide or polypropylene plastics axis 85, on axis, cloth is useful on the wire 95 that applies different voltages to each rotating disk, wire is coated by the high performance plastics pipe, can play and save electric power and prevent the dangerous effect of leaking electricity, can apply different voltage to disk by wire simultaneously, make the Electric Field Distribution of each disk spinning point even, play the effect that reduces Coulomb repulsion, uniform fiber fineness; The pedestal 140 that interval 5mm～100mm is arranged on axis, but fixed disc being connected with institute cloth wire, can be used for regulating disk spacing according to needs of production.
Described spinning disk 80 adopts hollow design, shape variable, and form parameter comprises the inclined degree, diameter, direction, quantity of disk border etc.Between spinning disk 80 and pedestal 140, adopt four symmetrical screws to fix (referring to accompanying drawing 2); Disk 80 inclined degrees are between 0 °～90 °, and thickness is between 0.5mm～10mm, and the inclined degree itself had makes disk have certain liquid storage ability.When the slow-speed of revolution is rotated, due to the existence on disk 80 inclined planes, can realize continuous spinning; The diameter of each disk can be regulated according to electric field distribution law between 100mm～200mm.According to the Electric Field Distribution principle, the disk diameter that is positioned at rotating shaft 85 centre positions can be controlled the uniformity of electric field between each disk spinning position than large, the such disk diameter distribution of wanting on both sides, and plays the effect of even spinning jet; Arranging of disk can be that single disk carries out unidirectional configured in parallel, evenly arranges along rotating shaft, can be also bottom surface configuration (referring to accompanying drawing 3) in pairs in opposite directions, and evenly arrange along rotating shaft.The arrangement mode of disk depends on the viscosity of spinning solution; The quantity of spinning disk and interval require to change according to product fabric width and grammes per square metre.
Described radome 75 adopts the polytetrafluoroethylene (PTFE) inwall, adopt circular arc design (referring to accompanying drawing 1), be designed with the high device 70 of control between radome and solution pool, can control by controlling disk spinning position height the band liquid measure of disk, make the sample path length uniformity (general control band liquid thickness is 0.1mm～0.5mm) of each spinning disk spinning position, thus make spun fibre fineness evenly, the electrospinning film thickness is even; Radome 75 can make the state of Electrospun core component in relative shielding, can save like this electric energy, Uniform jet and make high voltage concentrate on the spinning position, top of disk simultaneously.
The both positive and negative polarity of described high voltage source 10 is connected with target electrode plate 40 with the pressurization disk 130 in the high performance plastics rotating shaft respectively, and voltage value is 15kV～50kV.
Described defeated lace curtaining 15 adopts comparatively sparse and thin plastic production, electric field is disturbed minimum, is driven by roller, and drives base cloth and be fed forward, and speed is 1～100m/min.
Described ground connection target electrode plate 40 can be realized traversing by known technology, makes fiber laydown more even; Target electrode plate 40 is connected with the high voltage source negative pole, and can play the effect that strengthens electric field; Also can be according to the adjusting that needs of fiber collecting, shape variable, can be quiet movable, so that obtain the electrostatic spinning nano fabric nonwoven cloth that meets different needs.
Described air intake device 35, be arranged on defeated lace curtaining and target pole plate 40 tops, adopts conical design, and air draught is even, can make spun fiber laydown even.
The design of described antisliding apparatus 50, be, at defeated lace curtaining upstream end and output, two motors are installed respectively, and two motors are arranged on contrary both sides, and direction of rotation is identical, makes base cloth and defeated lace curtaining can slippage not occur with the rotation of roller.
The fabric width of described disc type electrostatic spinning apparatus is adjustable, generally between 300mm～2000mm.In order to realize scale, industrialized nano procedure of fibre production; especially mixed Static Spinning; can be staggered between each spinning unit by (referring to accompanying drawing 4), make on base cloth/receiver collected fiber distribute more even, make whole fabric width, the grammes per square metre of equipment further strengthen simultaneously.
Figure of description
Fig. 1 is the overall structure schematic diagram of a kind of embodiment of described disc type needle-less electrostatic spinning apparatus.
Fig. 2 is the profile of a kind of spinning core component of described disc type needle-less electrostatic spinning apparatus.
Fig. 3 is a kind of profile that adopts dual floppy disk to make the spinning core component of described disc type needle-less electrostatic spinning apparatus.
Fig. 4 is a kind of staggered schematic diagram of described disc type needle-less electrostatic spinning apparatus.
The nanofiber product SEM picture figure that Fig. 5 is a kind of embodiment of the centrifugal needle-less electrostatic spinning apparatus of the present invention.
The specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof:
The disc type needle-less electrostatic spinning apparatus of the present invention's design (being called for short device, referring to Fig. 1～4), this device mainly comprises liquid-supplying system, spinning system, electric power system, receiving system, transmission system and control system.
Described electric power system, receiving system, transmission system and control system adopt known technology, repeat no more here.
Described spinning system (referring to attached Fig. 1 and 2): comprise solution pool 55, solution pool is double-decker, the effect that its high performance plastics inwall 110 has the electric leakage of preventing and saves electric energy, and employing semicircle arcuation kerve, kerve and spinning disk 80 spacings are 10mm～30mm, can play the also effect of homogeneous solution of saving; Solution pool 55 adopts bearing to be connected with high performance plastics rotating shaft 85, rotating shaft 85 adopts high performance plastics to make, laid inside has the wire 95 be connected with each spinning disk 80, and be provided with the pedestal 140 that disk is installed, wire 95 pressurization disk 130 corresponding thereto is connected, and can realize the pressurization respectively to each spinning disk 80; Spinning disk 80 is arranged on pedestal 140, has angle of inclination and be the design of 0 °～90 °, and with certain liquid storage ability, diameter is adjustable, can pressurize respectively, and can take different shapes according to the actual requirements; The radome 70 of being made by high performance plastics is equipped with in the solution pool top, radome adopts round and smooth opening design, be shaped as circular-arc, its diameter is slightly larger than spinning disk 80 diameters, highly adjustable, can control the band liquid thickness of spinning disk 80 spinning positions, there is the effect of saving electric energy, reducing the mutual interference of electric field phase and uniform fiber fineness; Spinning jet top is equipped with receiving system, comprises defeated lace curtaining 15, the target electrode plate 40 reciprocally traversed, base cloth 20; Described defeated lace curtaining 15 adopts the plastic wire frivolous, that the order number is lower to make, and to electric field, disturbs minimum; Target electrode plate 40 reciprocally traverses, and is connected with the negative pole of high voltage source 10, and can takes different shapes, and can make fiber distribute more even, meets the different product needs.
Described solution pool 55 is double-decker, adopts circular-arc design, and with injection pump 120 and reflux pump 125.Solution pool inwall 110 adopts high performance plastics to make, and thickness is 5mm～20mm, the effect that has the electric leakage of preventing and save electric energy; Solution pool 55 adopts circular-arc design, and interior diameter is a bit larger tham the diameter (slightly large 10mm～30mm) of spinning disk 80, has the effect of conservation and homogeneous solution; Can the difference between injection pump 120 and reflux pump 125 be controlled according to the output of equipment, its difference operated by rotary motion between 2000g/h, can accurately be controlled the solution content in solution pool at 20g/h like this, and solution is flowed thereupon, prevents deposition.
It is axis that described high performance plastics rotating shaft 85 adopts high performance plastics, and laid inside has wire 95, and skin has high performance plastics sleeve pipe 91 to coat, and wire is connected with pressurization disk 130 with pedestal 140.Rotating shaft 85 adopts high performance plastics as axis, has the saving electric energy, prevents from leaking electricity and reducing the effect that electric field disturbs; Be provided with in rotating shaft with wire 95 and be connected, the pedestal 140 for spinning disk 80 is installed, the distance between pedestal is 0.5cm, and spinning disk 80 adjacent or interval is as required installed; Wire 95 is connected with pressurization disk 130 with pedestal 140, can apply respectively different voltage to each disk according to the simulate electric field distribution situation, thereby plays the effect of uniform electric field; Effective spun length of rotating shaft is that 30cm is to 80cm; The rotating speed of rotating shaft is that 2r/min is to 20r/min.
Described spinning disk 80 adopts hollow design, and shape is controlled, has inclined degree, diameter, direction, quantity etc. that adjustable shape comprises disk, has round and smooth domatic design.Between spinning disk 80 and pedestal 140, adopt four symmetrical screws to fix (referring to Fig. 2); The disk inclined degree is between 0 °～90 °, and the inclined plane that disk itself has makes disk have certain liquid storage ability, when the disk slow-speed of revolution is rotated, due to the existence on disk inclined plane, can realize continuous spinning; The diameter of each disk can be regulated according to electric field distribution law, disk diameter is between 100mm～200mm, according to the Electric Field Distribution principle, be positioned at large than both sides of disk diameter in the middle of rotating shaft, such disk diameter distributes can control the uniformity of electric field between each disk spinning point, and plays the effect of even spinning jet; The direction of disk can be unidirectional, can be also two-way cross (as accompanying drawing 3), can need adjustable according to solution; The quantity of spinning disk can be changed according to the needs of product fabric width and grammes per square metre.
Described radome 75 adopts high performance plastics to make, and adopts circular-arc design, with round and smooth spinning point opening design, highly adjustable, as accompanying drawing 1.The radome of being made by high performance plastics can play the effect that between shielding device, electric field disturbs, stablizes jet, and thickness is 10mm～15mm; The diameter of radome 75 is slightly large than the spinning disk, and A/F is between 30mm～50mm; And the height controller 70 between radome and solution pool is highly adjustable, the band liquid measure of controlled rounding dish spinning point, the even sample path length of each spinning disk spinning point, general control band liquid thickness is 0.1mm～0.5mm, thereby makes spun fibre fineness even; Radome can make the state of Electrospun core component in relative shielding, can save like this electric power, stablizes jet and make high pressure spot concentrate on the top spinning point of disk simultaneously.
Receiving system is positioned at spinning disk 80 tops, base cloth 20, defeated lace curtaining 15, target dash receiver 40, air intake device 35, consists of.Base cloth 20 is driven by defeated lace curtaining 15, and speed is that 1m/min is to 100m/min; Defeated lace curtaining 15 is made by plastic wire frivolous, that the order number is lower, minimum to the electric field interference, and, with antisliding apparatus 50, speed is that 1m/min is to 100m/min; Target electrode plate 40 is connected with the high voltage source negative pole, and, with traverse device, can adopt various shape, the enhancing electric field is arranged, make fiber distribute more evenly, obtain the fibroreticulate effect with certain orientation; Air intake device 35 is arranged on defeated lace curtaining and target pole plate top, adopts conical design, and air draught is even, can make spun fiber be deposited uniformly.
Embodiment 1
A kind of disc type needle-less scale electrostatic spinning nano fabric nonwoven cloth production equipment as shown in Figure 1, this equipment mainly comprises: solution pool 55, polytetrafluoroethylene (PTFE) rotating shaft 85, spinning disk 80, radome 75, high voltage source 10, defeated lace curtaining 15, ground connection target electrode plate 40, air intake device 35, transmission device 25, antisliding apparatus 50 etc.During work, solution pool 55 degree of depth are 130mm, and solution deep is set to 100mm, and the difference between injection pump 120 and reflux pump 125 is set to 172g/h; Spinning disk 80 diameters are 200mm, and the number of effectively working is 20, and the pedestal of often being separated by is installed a spinning disk, and its spacing is 10mm, and each spinning disk institute making alive is consistent, is+25kV; It is that disk band liquid measure thickness is 0.2mm that radome 75 is highly controlled; Polytetrafluoroethylene (PTFE) rotating shaft 85 velocities of rotation are 15r/min, and effective work width is 200mm; Be pressurised into-25kV of target electrode plate 40,30 times/min of shuttle speed; The transmission speed of defeated lace curtaining 15 and base cloth 20 is 2m/min, be set to-10MPa of the negative pressure of air intake device; Distance between spinning disk 80 spinning points and base cloth 20 is set to 150mm.
First take the PBS high polymer particle of certain mass, the solution of preparation mass fraction 14%, take the quality of solvent chloroform/isopropyl alcohol (8: 2), then solute, solvent are poured into successively in the frosted wide-mouth bottle with the magnetic force rotor, at room temperature, wide-mouth bottle is placed on the constant temperature blender with magnetic force that magnetic force rotor speed is 1000r/h and stirs about 2 hours, the PBS particle is dissolved fully, until solution becomes uniform transparence.
First set the height of radome 75 before spinning, the discrepancy in elevation between its opening and spinning disk is 0.2mm, then the distance between spinning disk 80 spinning points and base cloth is adjusted into to 150mm; Then inject PBS solution by injection pump 120 to solution pool 55, after liquid level reaches 100mm, open reflux pump 125, its difference is set to 172g/h; After solution mixes, the opening of rotary shaft transmission device, the rotating speed of setting polytetrafluoroethylene (PTFE) rotating shaft 85 is 15r/min, and setting the base cloth transmission speed is 2m/min, and it is 30 times/min that target electrode plate 40 comes and goes speed; After the sloping portion of spinning disk 80 is covered fully by solution, open high voltage source 10, setting voltage is 25kV, starts spinning.
After 10min, close successively high voltage source 10, injection pump 120, reflux pump 125, defeated lace curtaining transmission device 25, air intake device 35, target electrode plate reciprocating transmission device, shaft gearing device.Obtain the electrostatic spinning nano fiber PBS/ melt-blowing nonwoven Compound Fabric that is evenly distributed, effectively fabric width is 200mm, and electrostatic spinning nano fiber grammes per square metre is 1g/m
2, length is 20m.
Embodiment 2
A kind of disc type needle-less scale electrostatic spinning nano fabric nonwoven cloth production equipment as shown in Figure 1, this equipment mainly comprises: solution pool 55, polytetrafluoroethylene (PTFE) rotating shaft 85, spinning disk 80, radome 75, high voltage source 10, defeated lace curtaining 15, ground connection target electrode plate 40, air intake device 35, transmission device 25, antisliding apparatus 50 etc.During work, solution pool 55 degree of depth are 13cm, and solution deep is set to 10cm, and the difference between injection pump 120 and reflux pump 125 is set to 750g/h; Spinning disk 80 diameters are 200mm, adopt bi-directional design spinning disk (referring to accompanying drawing 3), and the number of effectively working is 25, and 3 pedestals of often being separated by are installed a spinning disk, and its spacing is 20mm, and each spinning disk institute making alive is consistent, is+30kV; It is that disk band liquid measure thickness is 0.15mm that radome 75 is highly controlled; Polytetrafluoroethylene (PTFE) rotating shaft 85 velocities of rotation are 20r/min, and effective work width is 500mm; Be pressurised into-30kV of target electrode plate 40,30 times/min of shuttle speed; The transmission speed of defeated lace curtaining 15 and base cloth 20 is 2m/min, be set to-10MPa of the negative pressure of air intake device; Distance between spinning disk 80 spinning points and base cloth 20 is set to 200mm.
First take the PVA high polymer particle of certain mass, the solution of preparation mass fraction 16%, precentagewise takes PVA high polymer particle and deionized water, then solute, solvent are poured into successively in the frosted wide-mouth bottle with the magnetic force rotor, at room temperature, wide-mouth bottle is placed on the constant temperature blender with magnetic force that magnetic force rotor speed is 1000r/h and stirs about 2 hours, the PVA particle is dissolved fully, until solution becomes uniform transparence.
First set the height of radome 75 before spinning, the discrepancy in elevation between its opening and spinning disk is 0.15mm, again the distance between spinning disk 80 spinning points and base cloth is adjusted into to 200mm, then inject solution by injection pump 120 to solution pool 55, after liquid level reaches 100mm, open reflux pump 125, its difference is set to 750g/h; After solution mixes, the opening of rotary shaft transmission device, the rotating speed of setting polytetrafluoroethylene (PTFE) rotating shaft 85 is 20r/min, and setting the base cloth transmission speed is 2m/min, and it is 30 times/min that target electrode plate 40 comes and goes speed; After the groove part in the middle of two-way spinning disk gathers a certain amount of solution, open high voltage source 10, setting voltage is 30kV, starts spinning.
After 10min, close successively high voltage source 10, injection pump 120, reflux pump 125, defeated lace curtaining transmission device 25, air intake device 35, target electrode plate reciprocating transmission device, shaft gearing device.Obtain the electrostatic spinning nano fiber PVA non-weaving cloth that is evenly distributed, effectively fabric width is 500mm, and electrostatic spinning nano fiber grammes per square metre is 2g/m
2, length is 20m.
Claims (10)
1. a disc type needle-less electrostatic spinning apparatus (referring to Fig. 1), comprise solution pool, high performance plastics rotating shaft, metal rotary disk, radome, grounded metal pole plate, air intake device, antisliding apparatus, it is characterized in that: described solution pool inner wall layer is made by high performance plastics, has safe insulation, saves electric energy, prevents from leaking electricity and reducing the effect that electric field disturbs; The rotating shaft solution pool adopts circular-arc design, and interior diameter is a bit larger tham the diameter of spinning disk, has the effect of conservation and homogeneous solution; Can the difference between reflux pump and reflux pump be controlled according to the output of equipment, can accurately be controlled the solution content in solution pool, and solution is flowed thereupon, prevented polymer deposition.
2. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: described high performance plastics rotating shaft laid inside has wire, and skin has the high performance plastics sleeve pipe to coat, and wire is connected with pressurization disk with pedestal; Described high performance plastics comprises polytetrafluoroethylene (PTFE), polyphenylene sulfide or polypropylene plastics.
3. disc type needle-less electrostatic spinning apparatus according to claim 1, is characterized in that: be provided with wire and be connected in the high performance plastics rotating shaft, for the pedestal of spinning disk is installed; Wire is connected with pressurization disk with pedestal, can require each disk is applied respectively to different voltage according to Electric Field Distribution, thereby play the effect of uniform electric field.
4. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: described spinning disk 80 adopts hollow design, shape is adjustable, comprises inclined degree, diameter, direction, quantity of disk etc., and the disk outward flange has round and smooth inclined design.
5. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: the disk inclined degree is between 0 °～90 °, the inclined design that disk itself has makes disk have certain liquid storage ability, when the disk slow-speed of revolution is rotated, due to the existence of disk inclined degree, can realize continuous spinning.
6. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: according to the Electric Field Distribution principle, be positioned at large than both sides of disk diameter in the middle of rotating shaft, such disk diameter distributes can control the uniformity of electric field between each disk spinning position, and plays the effect of even spinning jet.
7. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: disk can also can form pair of discs in bottom surface relatively along the equidirectional parallel placement of rotating shaft, then also along the uniform placement of rotating shaft, according to electrostatic spinning, requires adjustable; The quantity of spinning disk requires adjustable according to the product fabric width.
8. disc type needle-less electrostatic spinning apparatus according to claim 1 is characterized in that: described radome adopts polytetrafluoroethylene (PTFE) to make, and adopts circular-arc design, with round and smooth spinning position opening design, highly adjustable.The radome of being made by polytetrafluoroethylene (PTFE) can play the effect that between shielding device, electric field disturbs, stablizes jet; The diameter of radome is slightly large than the spinning disk, height controller between radome and solution pool, highly adjustable, the band liquid measure of controlled rounding dish spinning position, the sample path length of even each spinning disk spinning point, general control band liquid thickness is 0.1mm～0.5mm, thereby makes spun fibre fineness even; Radome can make the state of Electrospun core component in relative shielding, can save like this electric energy, stablizes jet and make high pressure spot concentrate on the spinning position, top of disk simultaneously.
9. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: described disk can be also the nonangular plane disc in marginal portion, and thickness is 0.5～100mm.
10. disc type needle-less electrostatic spinning apparatus according to claim 1, it is characterized in that: the diameter of each disk can be regulated according to electric field distribution law, and disk diameter is between 50mm～200mm.
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| JPWO2021054056A1 (en) * | 2019-09-17 | 2021-03-25 | ||
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