CN110373725A - A kind of brush electrostatic spinning apparatus of twolip type and its application method - Google Patents
A kind of brush electrostatic spinning apparatus of twolip type and its application method Download PDFInfo
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- CN110373725A CN110373725A CN201910566566.3A CN201910566566A CN110373725A CN 110373725 A CN110373725 A CN 110373725A CN 201910566566 A CN201910566566 A CN 201910566566A CN 110373725 A CN110373725 A CN 110373725A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a kind of brush electrostatic spinning apparatus of twolip type and its application methods.Described device includes spinning nozzle, brush liquid device, liquid feed device, high pressure generator and fiber reception device.Application method are as follows: successively open fiber reception device, open liquid feed device, the spinning solution in reservoir is made to enter liquid bath to be spun；Position, the upper pressure roller, subiculum roller pressure for setting gradually limit liquid back pipe, are then turned on brush liquid device, high pressure generator, are slowly increased voltage to required spinning voltage, jet stream generates at the sharp point at spinning nozzle both ends；Jet stream flies to fiber reception device, solvent volatilization under high voltage electrostatic field, and jet stream, which stretches to solidify to be deposited on metal roller, forms nanofiber.The brush liquid device that the present invention uses can control nozzle surface spinning liquid layer thickness well, and strip spray head obtains the instant spinning of high polymer spinning solution immediately, effectively reduces the waste of high polymer spinning solution, guarantee the continuity of spinning and the stability of concentration of dope.
Description
Technical field
The present invention relates to a kind of brush electrostatic spinning apparatus of twolip type and its application methods, belong to nanofiber and weaving loom
Tool technical field.
Background technique
When polymer fiber diameter is down to submicron-scale or nanoscale from micro-meter scale, just will appear a series of
Surprised characteristic.Such as very big volumetric surface area, the volumetric surface area of nanofiber is substantially the 1000 of micrometer fibers
Times；It can neatly carry out surface-functionalized；Superior effect and mechanicalness are shown compared with other known materials forms
Can, such as surface and interfacial effect, small-size effect, quantum size effect and quantum tunneling effect and rigidity, tensile strength.This
A little outstanding performances make nanofiber become the preferred material of many important applications, pass in high efficiency filter, bio-medical, intelligence
The fields such as sense are with development potential.Comprehensively consider operation possibility, stably and controllable property (including fibre diameter and its distribution), processing
Material ranges, processing time-consuming etc., electrostatic spinning processing technology, which just becomes currently the only one kind, can manufacture continuous polymer nano
The method of rice fiber.With the rise and fast development of nanometer material science, using Advance in Manufacture of Nano-fibers by Electrospinning at
For the research hotspot of science of engineering materials circle.
Traditional single needle electrostatic spinning apparatus is relatively simple, is mainly by high voltage power supply, liquid-supplying system and collection
Three parts of uniting composition.Liquid-supplying system includes micro-injection pump, medical needle tubing and flat mouth metal needle, and high polymeric solution flow is by micro-
Syringe pump control is measured, the anode of high voltage power supply is connect with flat mouth metal needle, and collection system is metal plate and is grounded.High-voltage electricity
Source voltage is gradually increased, and the drop of metal needle gradually forms taylor cone, when high-voltage power voltage further increases, electric field force meeting
The effects of overcoming surface tension, the viscous force of high polymeric solution forms small straight jet then and will appear the dynamic phenomenon arrival of whip
Grounded metal collecting board, in this process, solvent volatilization, high polymer are formed by curing nanofibres deposit in metal collection plate
On.
The nanofiber yield that traditional electrostatic spinning apparatus obtains is very low, and it is large quantities of in application to be difficult to meet nanofiber
The problem of demand of amount, furthermore single needle electrostatic spinning apparatus is easy blocking there is also syringe needle, this can seriously affect Nanowire
Dimension spinning process is gone on smoothly.
Current Electrospun nano-fibers mass preparation facilities has some reports both at home and abroad.Chinese patent
200710036447.4 disclose a kind of jet type electrostatic spinning equipment, and the device is poly- in height by being passed through gas in liquid bath bottom
Object free surface forms bubble, and bubble forms taylor cone and more jet streams under electric field force effect to improve nanofiber yield, but
There are many different bubble fragments of shape size to be stretched by electric field force while bubble formation taylor cone in mechanism ruptures, and causes
The diameter wider distribution of fiber.And biggish high polymer free surface solvent highly volatile, spinning direction are limited；Chinese patent
201310032194.9 disclosing a kind of umbrella-shaped electrostatic spinning sprayer and electrostatic spinning method, Nanowire is may be implemented in this method
Prepared by the mass of dimension, but the solution Free Surface of umbrella shower nozzle is contacted with atmospheric environment, solvent highly volatile, to will affect
To the stability of spinning and the quality of final nanofiber；It is more that Chinese patent 201510278266.7 discloses a kind of jet auxiliary
The yield of nanofiber in the unit time can be improved in syringe needle electrostatic spinning apparatus, the device, and spinning direction is unrestricted, but deposits
In the susceptible to plugging disadvantage of syringe needle, meanwhile, the arrangement mode of syringe needle will be in view of the mutual shadow between electric field after application high-pressure electrostatic
It rings, so the design of Multi needle electrostatic spinning apparatus is relatively complicated and complicated, it is difficult to realize mass production distribution of fiber diameters
Controllable nanofiber product.Existing patent also discloses series and applies brush electrostatic spinning nozzle, these spray heads still remain electricity
The problems such as field design is single, and the fluctuation of jet stream motion path is big, and fibre diameter controlling is bad.
Summary of the invention
The technical problems to be solved by the present invention are: the volatile solidification of electrostatic spinning nozzle surface spinning solution to be spun at present,
The problem of long-time spinning easy " wire drawing ", the waste of high polymer spinning solution is reduced, realizes that the controllable brush liquid of pressure roller, i.e. brush i.e. spinning is not drawn
Silk, two-edged wire vent are not interfered, and then realize that high quality narrow ditribution sub-micron fibers, nanofiber are prepared on a large scale.
The used technical solution that the present invention solves above-mentioned technical problem is:
A kind of brush electrostatic spinning apparatus of twolip type characterized by comprising
For receiving spinning solution and spraying the spinning nozzle of spinning solution jet stream, material is metal, and shape is flat strips
Shape, two sides are equipped with the sharp point upwardly extended, and spout is set to the tip of sharp point；
Brush liquid device reciprocating along the sharp point length direction of spinning nozzle, for brushing spinning solution；
For the liquid feed device of spinning brush head feed flow；
For generating the high pressure generator of spinning voltage；
For receiving the fiber reception device of spinning；
The liquid feed device includes interconnected reservoir and liquid bath to be spun, and the bottom of liquid bath to be spun passes through wriggling feed flow
Pipe is connected to reservoir, and the top of liquid bath to be spun is connected to by limiting liquid back pipe with reservoir, and wriggling liquid supply pipe is used for wait spin
Liquid bath feed flow, limit liquid back pipe are used to adjust the liquid level of liquid bath to be spun；It is connected with peristaltic pump on wriggling liquid supply pipe, is spun for adjusting
The flow of silk liquid；
The brush liquid device includes at least a pair of for holding the upper pressure roller and snub pulley of spinning nozzle.
Preferably, the spinning nozzle is straight line strip；It is rectangle in the middle part of section, the length of rectangle is 10-200mm,
Width is 5-20mm；Section both ends are two symmetrical triangles, triangle bottom with rectangle is wide is overlapped, the long respectively 1- of remaining waist
50mm, 5-150mm；There are the fillet of radius 2-10mm in two waist of triangle and middle part rectangle junction.
Preferably, the voltage regulation limits of the high pressure generator are 0-100kV.
Preferably, the reservoir, liquid bath to be spun, wriggling liquid supply pipe, limit liquid back pipe material be polytetrafluoroethylene (PTFE)；
Upper pressure roller, brush liquid roller two material be elastic rubber.
Preferably, the fiber reception device is grounded or is connected with high pressure generator cathode；High pressure generator anode with
Spinning nozzle is connected.
Preferably, the metal roller that the fiber reception device use is driven by motor, a diameter of 80mm-1200mm,
The revolving speed adjustable extent of motor is 0-100r/min.
The present invention also provides the application methods of the above-mentioned brush electrostatic spinning apparatus of twolip type, which is characterized in that including with
Lower step:
Step 1): adjustment fiber reception device is then turned on fiber and receives dress the distance between at a distance from spinning nozzle
It sets；
Step 2): opening liquid feed device, so that the spinning solution in reservoir is entered liquid bath to be spun, and be arranged for flow velocity；
Step 3): the position of setting limit liquid back pipe；
Step 4): pressure roller, subiculum roller pressure in setting；
Step 5): setting brush liquid device moves back and forth program, opens brush liquid device；
Step 6): high pressure generator is opened, is slowly increased voltage to required spinning voltage, jet stream is at spinning nozzle both ends
It is generated at sharp point；
Step 7): jet stream flies to fiber reception device under high voltage electrostatic field, and solvent volatilization, it is heavy that jet stream stretches solidification
Product forms nanofiber on metal roller.
Preferably, the brush liquid device is 0-15m/s in the reciprocating speed of spinning nozzle, and motor program is by PLC
Control, can electrodeless variable-speed.
The brush liquid device that the present invention uses can control nozzle surface spinning liquid layer thickness well；Brush liquid device rider-type brush
Feed flow is covered, strip spray head obtains the instant spinning of high polymer spinning solution immediately, effectively reduces the waste of high polymer spinning solution, guarantees
The continuity of spinning and the stability of concentration of dope can then realize high quality narrow ditribution sub-micron fibers, nanofiber
It is prepared by batch；Spinning nozzle can gather strongest jet stream excitation electric field in two sides.The invention is simple and feasible, is advantageously implemented super
The realization of large scale spinning production line, in the energy, filtering, biology, medical field application great potential.
Detailed description of the invention
Schematic diagram when Fig. 1 is twolip type provided by the invention brush electrostatic spinning apparatus spinning；
Fig. 2 is the structural schematic diagram of spinning nozzle；
Fig. 3 is the schematic cross-section of spinning nozzle.
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
As shown in Figure 1-3, a kind of brush electrostatic spinning apparatus of twolip type provided for embodiment 1-3 comprising:
For receiving spinning solution and spraying the spinning nozzle 11 of spinning solution jet stream, material is metal, and shape is flat strips
Shape, two sides are equipped with the sharp point upwardly extended, and spout is set to the tip of sharp point；
Brush liquid device 12 reciprocating along the sharp point length direction of spinning nozzle 11, for brushing spinning solution；
For the liquid feed device of 12 feed flow of spinning brush head；
For generating the high pressure generator 1 of spinning voltage；
For receiving the fiber reception device 7 of spinning；
The liquid feed device includes interconnected reservoir 15 and liquid bath to be spun 5, and the bottom of liquid bath 5 to be spun passes through wriggling
Liquid supply pipe 13 is connected to reservoir 15, and the top of liquid bath 5 to be spun is connected to by limiting liquid back pipe 2 with reservoir 15, wriggling feed flow
Pipe 13 is used to limit the liquid level that liquid back pipe 2 is used to adjust liquid bath 5 to be spun to 5 feed flow of liquid bath to be spun；It is connected on wriggling liquid supply pipe 13
There is peristaltic pump, for adjusting the flow of spinning solution.
The brush liquid device 12 includes at least a pair of for holding the upper pressure roller 4 and snub pulley 3 of spinning nozzle 11.Reservoir
15, liquid bath 5 to be spun, wriggling liquid supply pipe 13, limit liquid back pipe 2 material be polytetrafluoroethylene (PTFE)；Upper pressure roller 3, brush liquid roller 24
Material is elastic rubber.
Spinning nozzle 11 is straight line strip；It is rectangle in the middle part of section, the length of rectangle is 10-200mm, width 5-
20mm；Section both ends are two symmetrical triangles, triangle bottom with rectangle is wide is overlapped, remaining waist long respectively 1-50mm, 5-
150mm；There are the fillet of radius 2-10mm in two waist of triangle and middle part rectangle junction.
The voltage regulation limits of high pressure generator 1 are 0-100kV.
The ground connection of fiber reception device 79 is connected with 1 cathode of high pressure generator；The anode and spinning nozzle of high pressure generator 1
11 are connected.Fiber reception device 7 is using the metal roller driven by motor 6, a diameter of 80mm-1200mm, the revolving speed of motor 6
Adjustable extent is 0-100r/min.
The application method of the above-mentioned brush electrostatic spinning apparatus of twolip type, comprising the following steps:
Step 1: adjustment fiber reception device 7 is then turned on fiber reception the distance between at a distance from spinning nozzle 11
Device 7；
Step 2: opening liquid feed device, so that the spinning solution 14 in reservoir 15 is entered liquid bath 5 to be spun, and be arranged for liquid stream
Speed；
Step 3: the position of setting limit liquid back pipe 2；
Step 4: pressure roller 4,3 pressure of snub pulley in setting；
Step 5: setting brush liquid device 12 moves back and forth program, opens brush liquid device 12；Brush liquid device 12 is in spinning nozzle
11 reciprocating speed are 0-15m/s, and motor program is controlled by PLC, can electrodeless variable-speed.
Step 6: opening high pressure generator 1, be slowly increased voltage to required spinning voltage, jet stream 10 is at 11 liang of spinning nozzle
It is generated at the sharp point at end；
Step 7: jet stream 10 flies to fiber reception device 7 under high voltage electrostatic field, and solvent volatilization, jet stream 10 stretches solid
Change is deposited on formation nanofiber 8 on metal roller.
Embodiment 1
Nanometer is prepared using polyacrylonitrile (PAN) and N-N dimethylformamide (DMF) prepared high polymeric solution below
Fiber.The mass fraction for preparing PAN high polymeric solution is 10%.Metal roller is grounded, metal roller and spinning nozzle are adjusted
11 distance is 25cm；The driving motor 6 of 7 metal roller of reception device is opened, and it is 60r/min that drum rotation speed, which is arranged,；It opens
Peristaltic pump and be arranged for flow velocity be 50ml/min；Setting limit 2 position of liquid back pipe is 20mm above spinning nozzle；It is pressed in setting
Roller 4,3 pressure of snub pulley is respectively 20N and 20N；Brush liquid device 12 is set and moves back and forth program, opens brush liquid device 12 and back and forth transports
It is dynamic, speed 200mm/s；It opens high pressure generator 1 to switch, is slowly increased voltage to 50kV；A large amount of jet streams 10 are in spinning nozzle
11 liang of end surfaces generate；Jet stream 10 flies to metal roller under high voltage electrostatic field, and solvent volatilization, it is heavy that jet stream 10 stretches solidification
Product forms a large amount of nanofibers 8 on metal roller.
Embodiment 2
Nanometer is prepared using polyacrylonitrile (PAN) and N-N dimethylformamide (DMF) prepared high polymeric solution below
Fiber.The mass fraction for preparing PAN high polymeric solution is 12%.Metal roller is grounded, metal roller and spinning nozzle are adjusted
11 distance is 23cm；The driving motor 6 of 7 metal roller of reception device is opened, and it is 80r/min that drum rotation speed, which is arranged,；It opens
Peristaltic pump and be arranged for flow velocity be 70ml/min；Setting limit 2 position of liquid back pipe is 20mm above spinning nozzle；It is pressed in setting
Roller 4,3 pressure of snub pulley is respectively 15N and 15N；Brush liquid device 12 is set and moves back and forth program, opens brush liquid device 12 and back and forth transports
It is dynamic, speed 400mm/s；It opens high pressure generator 1 to switch, is slowly increased voltage to 55kV；A large amount of jet streams 10 are in spinning nozzle
11 liang of end surfaces generate；Jet stream 10 flies to metal roller under high voltage electrostatic field, and solvent volatilization, it is heavy that jet stream 10 stretches solidification
Product forms a large amount of nanofibers 8 on metal roller.
Embodiment 3
Nanofiber is prepared using polyvinyl alcohol (PVA) and the prepared high polymeric solution of deionized water below.Prepare PVA
The mass fraction of high polymeric solution is 18%.The mass fraction for preparing PAN high polymeric solution is 12%.Metal roller is grounded,
The distance for adjusting metal roller and spinning nozzle 11 is 18cm；The driving motor 6 of 7 metal roller of reception device is opened, and is arranged
Drum rotation speed is 70r/min；Opening peristaltic pump and being arranged for flow velocity is 60ml/min；Setting limit 2 position of liquid back pipe is to spin
20mm above silk spray head；Pressure roller 4 in setting, 3 pressure of snub pulley is respectively 10N and 10N；Brush liquid device 12 is set and moves back and forth journey
Sequence is opened brush liquid device 12 and is moved back and forth, speed 100mm/s；It opens high pressure generator 1 to switch, is slowly increased voltage extremely
55kV；A large amount of jet streams 10 are generated in 11 liang of end surfaces of spinning nozzle；Jet stream 10 flies to metal roller under high voltage electrostatic field,
Solvent volatilization, jet stream 10, which stretches to solidify to be deposited on metal roller, forms a large amount of nanofibers 8.
Claims (8)
1. a kind of brush electrostatic spinning apparatus of twolip type characterized by comprising
For receiving spinning solution and spraying the spinning nozzle (11) of spinning solution jet stream, material is metal, and shape is flat strips
Shape, two sides are equipped with the sharp point upwardly extended, and spout is set to the tip of sharp point；
Brush liquid device (12) reciprocating along the sharp point length direction of spinning nozzle (11), for brushing spinning solution；
For the liquid feed device of spinning brush head (12) feed flow；
For generating the high pressure generator (1) of spinning voltage；
For receiving the fiber reception device (7) of spinning；
The liquid feed device includes interconnected reservoir (15) and liquid bath to be spun (5), and the bottom of liquid bath (5) to be spun passes through compacted
Dynamic liquid supply pipe (13) are connected to reservoir (15), and the top of liquid bath (5) to be spun is connected by limit liquid back pipe (2) and reservoir (15)
Logical, wriggling liquid supply pipe (13) is used to limit the liquid that liquid back pipe (2) are used to adjust liquid bath to be spun (5) to liquid bath to be spun (5) feed flow
Face；Wriggling liquid supply pipe is connected with peristaltic pump on (13), for adjusting the flow of spinning solution；
The brush liquid device (12) includes at least a pair of upper pressure roller (4) for holding spinning nozzle (11) and snub pulley (3).
2. the brush electrostatic spinning apparatus of twolip type as described in claim 1, which is characterized in that the spinning nozzle (11) is described
Spinning nozzle is straight line strip；It is rectangle in the middle part of section, the length of rectangle is 10-200mm, width 5-20mm；Section two
End is two symmetrical triangles, triangle bottom with rectangle is wide is overlapped, remaining waist long respectively 1-50mm, 5-150mm；Two waist of triangle
There is the fillet of radius 2-10mm with middle part rectangle junction.
3. the brush electrostatic spinning apparatus of twolip type as described in claim 1, which is characterized in that the high pressure generator (1)
Voltage regulation limits are 0-100kV.
4. the brush electrostatic spinning apparatus of twolip type as described in claim 1, which is characterized in that the reservoir (15), wait spin
Liquid bath (5), wriggling liquid supply pipe (13), limit liquid back pipe (2) material be polytetrafluoroethylene (PTFE)；Upper pressure roller (3), brush liquid roller two
(4) material is elastic rubber.
5. the brush electrostatic spinning apparatus of twolip type as described in claim 1, which is characterized in that the fiber reception device (7)
Ground connection (9) is connected with high pressure generator (1) cathode；The anode of high pressure generator (1) is connected with spinning nozzle (11).
6. the brush electrostatic spinning apparatus of twolip type as described in claim 1, which is characterized in that the fiber reception device (7)
Using the metal roller driven by motor (6), a diameter of 80mm-1200mm, the revolving speed adjustable extent of motor (6) is 0-
100r/min。
7. a kind of application method of the brush electrostatic spinning apparatus of twolip type as claimed in any one of claims 1 to 6, feature exist
In, comprising the following steps:
Step 1): adjustment fiber reception device (7) is then turned on fiber reception the distance between at a distance from spinning nozzle (11)
Device (7)；
Step 2): opening liquid feed device, so that the spinning solution (14) in reservoir (15) is entered liquid bath to be spun (5), and feed flow is arranged
Flow velocity；
Step 3): the position of setting limit liquid back pipe (2)；
Step 4): pressure roller (4), snub pulley (3) pressure in setting；
Step 5): setting brush liquid device (12) moves back and forth program, opens brush liquid device (12)；
Step 6): it opens high pressure generator (1), is slowly increased voltage to required spinning voltage, jet stream (10) is in spinning nozzle
(11) it is generated at the sharp point at both ends；
Step 7): jet stream (10) is flown to fiber reception device (7) under high voltage electrostatic field, and solvent volatilization, jet stream (10) is drawn
It stretches solidification and is deposited on formation nanofiber (8) on metal roller.
8. the application method of the brush electrostatic spinning apparatus of twolip type as claimed in claim 7, which is characterized in that the brush liquid dress
It is 0-15m/s that (12), which are set, in the reciprocating speed of spinning nozzle (11), and motor program is controlled by PLC, can electrodeless variable-speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN110923827A (en) * | 2019-11-29 | 2020-03-27 | 苏州新能高材科技有限公司 | Non-needle type electrostatic spinning device |
| CN112575394A (en) * | 2020-12-28 | 2021-03-30 | 河南精绘自动化科技有限公司 | Liquid supply and return system of electrostatic spinning machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110923827A (en) * | 2019-11-29 | 2020-03-27 | 苏州新能高材科技有限公司 | Non-needle type electrostatic spinning device |
| CN112575394A (en) * | 2020-12-28 | 2021-03-30 | 河南精绘自动化科技有限公司 | Liquid supply and return system of electrostatic spinning machine |
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Effective date of registration: 20211125 Address after: No. 2012 Jinbi Road, Fengxian District, Shanghai Applicant after: NARI Weikang (Shanghai) Technology Co.,Ltd. Address before: 226300 a-018, 4th floor, finished product building, Nantong home textile city, Chuanjiang Town, Tongzhou District, Nantong City, Jiangsu Province Applicant before: NANTONG DINGYU TEXTILE MACHINERY TECHNOLOGY CO.,LTD. |
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Application publication date: 20191025 |