CN204676196U - A kind of melt magnetic device for spinning - Google Patents
A kind of melt magnetic device for spinning Download PDFInfo
- Publication number
- CN204676196U CN204676196U CN201520344245.6U CN201520344245U CN204676196U CN 204676196 U CN204676196 U CN 204676196U CN 201520344245 U CN201520344245 U CN 201520344245U CN 204676196 U CN204676196 U CN 204676196U
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- spinning
- nozzle
- spinning nozzle
- vertical support
- permanent magnet
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Abstract
The utility model discloses a kind of melt magnetic device for spinning, this device comprises can control the heatable charging gear of delivery rate, spinning nozzle, shower nozzle driving mechanism and spinning receiving system, described spinning receiving system comprises level and collects disk, the bottom circle centre position collecting disk docks with the output shaft of DC brushless motor and links, collect disk upper surface with disc centre axis for symmetry axis is symmetrical arranged multiple vertical support, wherein 1 vertical support is permanent magnet, all the other are metal fine needle, described spinning nozzle is horizontally disposed with, the jet of spinning nozzle points to the permanent magnet of spinning receiving system, described spinning nozzle connects the shower nozzle driving mechanism that its in the vertical direction can be driven to move reciprocatingly.Without the need to high-tension electricity effect in this device use procedure, effectively reduce production cost and potential safety hazard, and obtained fiber architecture is orderly, output height is applicable to large-scale production, and gained micro nanometer fiber has good application prospect.
Description
Technical field
The utility model belongs to nanofiber new preparation technology field, particularly a kind of melt magnetic device for spinning utilizing alternating magnetic field power and tensile force to replace electric field force completely.
Background technology
Compared with Conventional nano material, monodimension nanometer material (as nano wire, nanometer rods, nanotube etc.) has huge specific area, larger length/diameter ratio and is different from the physicochemical properties such as electricity, magnetic, power, heat, light of bulk sample, has wide application at numerous areas such as nano electron device, air filtration, sensor and biomedicines.Along with nano-fiber material is at the development of each field application technology, the technology of preparing of nano-fiber material have also been obtained further exploitation and research.The technology of preparing of current polymer nanofiber mainly comprises matrix polymerization, is separated, self assembly and spinning process method (comprising meltblown, method of electrostatic spinning, extension, bi-component composite spinning method) etc., and different technologies of preparing has himself advantage limitation relative to it.Along with the development of nanosecond science and technology, the plurality of advantages such as method of electrostatic spinning is simple with its process equipment, raw material sources are extensive, spinning technique is controlled, are subject to extensive research report both domestic and external.Electrostatic spinning technique is divided into solution electrostatic spinning and melt electrostatic spinning, wherein melt electrostatic spinning is in raising spinning output, expand the huge advantage that the aspects such as fiber applications field have conventional solution electrostatic spinning incomparable: (1) melt electrostatic spinning process is without the need to organic solvent, while minimizing solvent evaporates works the mischief, reduction manufactures a finished product; (2) conversion rate of products is high, avoids the residue problem of solvent.
In recent years, develop and improve melt electrostatic spinning technology one of electrospinning study hotspot.Although melt electrostatic spinning just proposes in the patent of the people such as Charles Norton in 1936, but the fibre diameter due to preparation is comparatively large and need the reasons such as heater, until within 1981, just there is relevant research paper to occur, after entering 21 century, really start the research boom of melt electrostatic spinning technology.The subject matter that current melt electrostatic spinning technology exists: one be the viscosity of polymer melt be greater than its be dissolved in solvent after viscosity, mean the operating voltage that melt electrostatic spinning needs are higher and temperature; Two is volatilization processes that melt electrospinning does not have solvent, and the fiber of preparation is thicker; Three is that melt electrospinning needs extra heater, generally adopts Electric heating, very easily causes electric heating circuit or hardware puncturing with high-field electrode, thus stops spinning process.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, for melt electrostatic spinning device complex structure, high-tension electricity very easily punctures with heater circuit shortcomings such as causing potential safety hazard, there is provided that a kind of structure is simple, the New Magnetic Field Controlled device for spinning of handling safety, this device utilizes alternating magnetic field power to replace electric field force completely in conjunction with tensile force to carry out stretch spinning to polymer melt and prepare micro nanometer fiber.
To achieve these goals, the technical scheme that provides of the utility model is as follows:
A kind of melt magnetic device for spinning, comprise and can control the heatable charging gear of delivery rate, spinning nozzle, shower nozzle driving mechanism and spinning receiving system, described charging gear is provided with the heater block of heating and melting macromolecular material, described spinning receiving system comprises horizontally disposed collection disk, the bottom circle centre position of described collection disk docks with the output shaft of DC brushless motor and links, the electric machine controller of DC brushless motor electric connection of power supply and control motor speed, described collection disk upper surface with disc centre axis for symmetry axis is symmetrical arranged multiple vertical support, described vertical support is at least 3, in vertical support, 1 is permanent magnet, all the other are metal fine needle, described spinning nozzle is horizontally disposed with, the jet of spinning nozzle points to the permanent magnet of spinning receiving system, described spinning nozzle connects the shower nozzle driving mechanism that its in the vertical direction can be driven to move reciprocatingly, described spinning nozzle is connected with the charging gear of supply spinning solution.
Further, described charging gear is single screw extrusion machine, described single screw extrusion machine is by three sections of heating, feeding section temperature is 80 DEG C ~ 200 DEG C, fluxing zone temperature 85 DEG C ~ 205 DEG C, homogenizing zone temperature at 90 DEG C ~ 210 DEG C, the head of described single screw extrusion machine connects spinning nozzle by woven hose.
Further, described vertical support is 4, and wherein 1 is permanent magnet, and 3 is metal fine needle.
Further, described shower nozzle driving mechanism is linear electric motors and controller thereof.
Novel melt magnetic device for spinning described in utilization prepares the method for micro nanometer fiber, comprises the following steps:
(1) mixing of materials: magnetic nanoparticle and high molecular polymer are fully uniformly mixed, obtain mixture;
(2) preparation of micro nanometer fiber: step (1) gained mixture is added in charging gear, open charging gear, the heating-up temperature of heater block is set, magnetic nanoparticle and high molecular polymer are melt into magnetic fluid spinning solution under high temperature action, the delivery rate of adjustment charging gear, magnetic fluid spinning solution enters spinning nozzle, drop is formed at spinning nozzle jet place, the magnetic fluid spinning solution drop at spinning nozzle jet place forms jet under the action of a magnetic force and connects into bridge with permanent magnet, now open the electric machine controller switch of shower nozzle driving mechanism switch and DC brushless motor, regulate motor speed, DC brushless motor drives collects disc rotary, under magnetic field force effect, ferrofluid jet is constantly drawn out, along with solvent evaporates in slenderizing process, ordered magnetism micro nanometer fiber has been wound between the vertical support collecting disk, shower nozzle driving mechanism drives spinning nozzle in the vertical direction to move reciprocatingly after opening, spinning uniform winding between vertical support can be made, and be not gathered in a position and be wound around mutually adhesion and affect spinning quality.
Further, the described high molecular polymer described in step (1) is one or more in polyethylene glycol oxide, Kynoar, polycaprolactone, polystyrene, polymethyl methacrylate, ethylene-vinyl acetate copolymer; Magnetic nanoparticle described in step (1) is γ-Fe
2o
3, Fe
3o
4, cobalt, one in nickel, or be the composite magnetic nano particle of multiple magnetic element.
Further, the charging gear used in step (2) is single screw extrusion machine, the mixture of step (1) gained is added single screw extrusion machine from hopper, start single screw extrusion machine, setting feeding section temperature, fluxing zone temperature, homogenizing zone temperature and screw speed, magnetic nanoparticle and high molecular polymer are melt into magnetic fluid spinning solution in the process of three sections of heating, form magnetic fluid spinning solution in the mixing under impetus of extruding of singe screw and extrude from head, and enter spinning nozzle by the woven hose be connected with head and form drop at spinning nozzle jet place, the magnetic fluid spinning solution drop at spinning nozzle jet place forms jet under the action of a magnetic force and connects into bridge with permanent magnet, now open the electric machine controller switch of shower nozzle driving mechanism switch and DC brushless motor, regulate motor speed, DC brushless motor drives collects disc rotary, under magnetic field force effect, ferrofluid jet is constantly drawn out, along with solvent evaporates in slenderizing process, ordered magnetism micro nanometer fiber has been wound between the vertical support collecting disk.
Further, described step (1) mixing of materials is be the Fe of 43:57 by mass ratio
3o
4magnetic nanoparticle and polycaprolactone are fully uniformly mixed, described Fe
3o
4the diameter of magnetic nanoparticle is 20 nanometers, and the molecular weight of described polycaprolactone is 100000; In the single screw extrusion machine used in step (2), singe screw diameter is 20 millimeters, its draw ratio is 25, the feeding section temperature of setting single screw extrusion machine is 80 DEG C, fluxing zone temperature is 85 DEG C, homogenizing zone temperature is 90 DEG C, screw speed is 50 revs/min, spinning nozzle jet and permanent magnet spacing is regulated to be 6.5 millimeters, direct current brushless motor speed is 300 revs/min, and the spinning time is 20 minutes.
Further, described step (1) mixing of materials is be the Fe of 3:7 by mass ratio
3o
4magnetic nanoparticle and ethylene-vinyl acetate copolymer are fully uniformly mixed, described Fe
3o
4the diameter of magnetic nanoparticle is 20 nanometers, and the molecular weight of described ethylene-vinyl acetate copolymer is 2000; In the single screw extrusion machine used in step (2), singe screw diameter is 20 millimeters, its draw ratio is 25, the feeding section temperature of setting single screw extrusion machine is 110 DEG C, fluxing zone temperature is 115 DEG C, homogenizing zone temperature is 120 DEG C, screw speed is 60 revs/min, spinning nozzle jet and permanent magnet spacing is regulated to be 6.5 millimeters, direct current brushless motor speed is 500 revs/min, and the spinning time is 20 minutes.
Further, also comprise step (3) post-processed: the magnetic micro nanometer fiber soaking oxidation step (2) gained with acid solution dissolves the magnetic nanoparticle removed in composite fibre, namely can obtain not containing the polymer micro-nano rice noodles of magnetic-particle.
The beneficial effects of the utility model are: the utility model provides a kind of melt magnetic device for spinning, this device utilizes the effect of alternating magnetic field power, the jet containing polymer melt that stretches carries out spinning, whole process is without the need to high-tension electricity effect, effective reduction production cost and potential safety hazard, and obtained fiber architecture is orderly, output height is applicable to large-scale production, and gained micro nanometer fiber has good application prospect.Specifically:
(1) the utility model device is easy to operate, and equipment needed thereby is simple and easy to get, only just can build device for spinning by screw extruder, heater and rotary permanent-magnet iron; Handling safety, substitute electric field force by magnetic field force completely in conjunction with tensile force, overcome the danger of high-pressure electrostatic, spinning process safety and environmental protection is pollution-free, easy to utilize.
(2) the utility model technological process is simple, spinning is with low cost, requires low, can increase spinning nozzle number according to demand, realize industrialized mass production micro nanometer fiber production equipment.
(3) the magnetic micro nanometer fiber diameter that prepared by the utility model is evenly distributed, and has good magnetic, and the ordered magnetism micro nanometer fiber that has of preparation can be widely used in the fields such as target medicine carrier, tumour magnetic thermotherapy, biological active matter quality detection.
(4) the magnetic micro nanometer fiber that obtains of the utility model is through simply and easy treat, and the magnetic nanoparticle that can remove in fiber obtains porous fibre.
Accompanying drawing explanation
Fig. 1 is melt magnetic device for spinning agent structure schematic diagram of the present utility model;
Fig. 2 is the optical microscope photograph of orderly Kynoar magnetic micro nanometer fiber prepared by the utility model;
In figure: 1-single screw extrusion machine, 2-hopper, 3-head, 4-woven hose, 5-spinning nozzle, 6-linear electric motors, 7-permanent magnet, 8-metal fine needle, 9-collects disk, 10-DC brushless motor, 11-electric machine controller.
Detailed description of the invention
According to following embodiment, the utility model can be understood better.But those skilled in the art will readily understand, concrete material proportion, process conditions and result thereof described by embodiment only should can not limit the utility model described in detail in claims yet for illustration of the utility model.
Embodiment 1
As shown in Figure 1, a kind of melt magnetic device for spinning, comprise and can control the heatable charging gear of delivery rate, spinning nozzle 5, shower nozzle driving mechanism and spinning receiving system, described charging gear is provided with the heater block of heating and melting macromolecular material, described spinning receiving system comprises horizontally disposed collection disk 9, the bottom circle centre position of described collection disk 9 docks with the output shaft of DC brushless motor 10 and links, the electric machine controller 11 of DC brushless motor 10 electric connection of power supply and control motor speed, described collection disk 9 upper surface with disc centre axis for symmetry axis is symmetrical arranged multiple vertical support, described vertical support is at least 3, in vertical support, 1 is permanent magnet 7, all the other are metal fine needle 8, described spinning nozzle 5 is horizontally disposed with, the jet of spinning nozzle 5 points to the permanent magnet 7 of spinning receiving system, described spinning nozzle 5 connects the shower nozzle driving mechanism that its in the vertical direction can be driven to move reciprocatingly, described spinning nozzle 5 is connected with the charging gear of supply spinning solution.
Specifically, described charging gear is single screw extrusion machine 1, described single screw extrusion machine 1 is by three sections of heating, feeding section temperature is 80 DEG C ~ 200 DEG C, fluxing zone temperature 85 DEG C ~ 205 DEG C, homogenizing zone temperature at 90 DEG C ~ 210 DEG C, the head 3 of described single screw extrusion machine connects spinning nozzle 5 by woven hose 4.Described vertical support is 4, and wherein 1 is permanent magnet 7, and 3 is metal fine needle 8.Described shower nozzle driving mechanism is linear electric motors 6 and controller thereof.
Embodiment 2
Use the melt magnetic device for spinning of embodiment 1 to prepare the method for micro nanometer fiber, comprise the following steps:
(1) mixing of materials: be the Fe of 43:57 by mass ratio
3o
4magnetic nanoparticle and polycaprolactone are fully uniformly mixed, described Fe
3o
4the diameter of magnetic nanoparticle is 20 nanometers, and the molecular weight of described polycaprolactone is 100000;
(2) preparation of micro nanometer fiber: the mixture of step (1) gained is added single screw extrusion machine 1 from hopper 2, start single screw extrusion machine 1, singe screw diameter is 20 millimeters, its draw ratio is 25, setting feeding section temperature is 80 DEG C, fluxing zone temperature is 85 DEG C, homogenizing zone temperature is 90 DEG C, screw speed is 50 revs/min, magnetic nanoparticle and high molecular polymer are melt into magnetic fluid spinning solution in the process of three sections of heating, form magnetic fluid spinning solution in the mixing under impetus of extruding of singe screw and extrude from head 3, and enter spinning nozzle 5 by the woven hose 4 be connected with head 3 and form drop at spinning nozzle 5 jet place, the minimum spacing regulating spinning nozzle 5 jet and permanent magnet 7 is 6.5 millimeters, the magnetic fluid spinning solution drop at spinning nozzle 5 jet place forms jet under the action of a magnetic force and connects into bridge with permanent magnet 7, now open electric machine controller 11 switch of shower nozzle driving mechanism 6 switch and DC brushless motor 10, motor speed is regulated to be 300 revs/min, the spinning time is 20 minutes, DC brushless motor drives collects disc rotary 9, under magnetic field force effect, ferrofluid jet is constantly drawn out, along with solvent evaporates in slenderizing process, ordered magnetism micro nanometer fiber has been wound between the vertical support collecting disk 9.
Embodiment 2:
Use the melt magnetic device for spinning of embodiment 1 to prepare the method for micro nanometer fiber, comprise the following steps:
(1) mixing of materials: be the Fe of 3:7 by mass ratio
3o
4magnetic nanoparticle and ethylene-vinyl acetate copolymer are fully uniformly mixed, described Fe
3o
4the diameter of magnetic nanoparticle is 20 nanometers, and the molecular weight of described ethylene-vinyl acetate copolymer is 2000;
(2) preparation of micro nanometer fiber: the mixture of step (1) gained is added single screw extrusion machine 1 from hopper 2, start single screw extrusion machine 1, singe screw diameter is 20 millimeters, its draw ratio is 25, setting feeding section temperature is 110 DEG C, fluxing zone temperature is 115 DEG C, homogenizing zone temperature is 120 DEG C, screw speed is 60 revs/min, magnetic nanoparticle and high molecular polymer are melt into magnetic fluid spinning solution in the process of three sections of heating, form magnetic fluid spinning solution in the mixing under impetus of extruding of singe screw and extrude from head 3, and enter spinning nozzle 5 by the woven hose 4 be connected with head 3 and form drop at spinning nozzle 5 jet place, the minimum spacing regulating spinning nozzle 5 jet and permanent magnet 7 is 6.5 millimeters, the magnetic fluid spinning solution drop at spinning nozzle 5 jet place forms jet under the action of a magnetic force and connects into bridge with permanent magnet 7, now open electric machine controller 11 switch of shower nozzle driving mechanism 6 switch and DC brushless motor 10, motor speed is regulated to be 500 revs/min, the spinning time is 20 minutes, DC brushless motor drives collects disc rotary 9, under magnetic field force effect, ferrofluid jet is constantly drawn out, along with solvent evaporates in slenderizing process, ordered magnetism micro nanometer fiber has been wound between the vertical support collecting disk 9.
Embodiment 3:
Use the melt magnetic device for spinning of embodiment 1 to prepare the method for micro nanometer fiber, comprise the following steps:
(1) mixing of materials: be the Fe of 3:7 by mass ratio
3o
4magnetic nanoparticle and Kynoar are fully uniformly mixed, described Fe
3o
4the diameter of magnetic nanoparticle is 20 nanometers, and the molecular weight of described Kynoar is 270000;
(2) preparation of micro nanometer fiber: the mixture of step (1) gained is added single screw extrusion machine 1 from hopper 2, start single screw extrusion machine 1, singe screw diameter is 20 millimeters, its draw ratio is 25, setting feeding section temperature is 200 DEG C, fluxing zone temperature is 205 DEG C, homogenizing zone temperature is 210 DEG C, screw speed is 40 revs/min, magnetic nanoparticle and high molecular polymer are melt into magnetic fluid spinning solution in the process of three sections of heating, form magnetic fluid spinning solution in the mixing under impetus of extruding of singe screw and extrude from head 3, and enter spinning nozzle 5 by the woven hose 4 be connected with head 3 and form drop at spinning nozzle 5 jet place, the minimum spacing regulating spinning nozzle 5 jet and permanent magnet 7 is 6 millimeters, the magnetic fluid spinning solution drop at spinning nozzle 5 jet place forms jet under the action of a magnetic force and connects into bridge with permanent magnet 7, now open electric machine controller 11 switch of shower nozzle driving mechanism 6 switch and DC brushless motor 10, motor speed is regulated to be 300 revs/min, the spinning time is 20 minutes, DC brushless motor drives collects disc rotary 9, under magnetic field force effect, ferrofluid jet is constantly drawn out, along with solvent evaporates in slenderizing process, ordered magnetism micro nanometer fiber has been wound between the vertical support collecting disk 9, the optical microscope photograph of obtained orderly Kynoar magnetic micro nanometer fiber as shown in Figure 2.
Embodiment 4
Post-processed is carried out to the Kynoar magnetic micro nanometer fiber of embodiment 3 gained: the mixed solution Kynoar magnetic micro nanometer fiber of step (2) gained of embodiment 3 being put into the sulfuric acid that volume ratio is 3:1 and nitric acid soaks oxidation, oxidizing temperature 80 DEG C, time is 48 hours, then take out micro nanometer fiber and use deionized water and alcohol washes 6 times respectively, vacuum 110 DEG C of dryings, namely magnetic-particle is removed from fiber, nano level aperture is left in the position at magnetic-particle script place, can obtain not containing the porous Kynoar micro-nano rice noodles of magnetic-particle.
Above embodiment is only for illustrating technical conceive of the present utility model and feature; its object is to allow person skilled in the art understand the utility model content and to be implemented; protection domain of the present utility model can not be limited with this; all equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (4)
1. a melt magnetic device for spinning, it is characterized in that, comprise and can control the heatable charging gear of delivery rate, spinning nozzle, shower nozzle driving mechanism and spinning receiving system, described charging gear is provided with the heater block of heating and melting macromolecular material, described spinning receiving system comprises horizontally disposed collection disk, the bottom circle centre position of described collection disk docks with the output shaft of DC brushless motor and links, the electric machine controller of DC brushless motor electric connection of power supply and control motor speed, described collection disk upper surface with disc centre axis for symmetry axis is symmetrical arranged multiple vertical support, described vertical support is at least 3, in vertical support, 1 is permanent magnet, all the other are metal fine needle, described spinning nozzle is horizontally disposed with, the jet of spinning nozzle points to the permanent magnet of spinning receiving system, described spinning nozzle connects the shower nozzle driving mechanism that its in the vertical direction can be driven to move reciprocatingly, described spinning nozzle is connected with the charging gear of supply spinning solution.
2. a kind of melt magnetic device for spinning as claimed in claim 1, it is characterized in that, described charging gear is single screw extrusion machine, described single screw extrusion machine is by three sections of heating, feeding section temperature is 80 DEG C ~ 200 DEG C, fluxing zone temperature 85 DEG C ~ 205 DEG C, homogenizing zone temperature at 90 DEG C ~ 210 DEG C, the head of described single screw extrusion machine connects spinning nozzle by woven hose.
3. a kind of melt magnetic device for spinning as claimed in claim 1, it is characterized in that, described vertical support is 4, and wherein 1 is permanent magnet, and 3 is metal fine needle.
4. a kind of melt magnetic device for spinning as claimed in claim 1, it is characterized in that, described shower nozzle driving mechanism is linear electric motors and controller thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344245.6U CN204676196U (en) | 2015-05-26 | 2015-05-26 | A kind of melt magnetic device for spinning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344245.6U CN204676196U (en) | 2015-05-26 | 2015-05-26 | A kind of melt magnetic device for spinning |
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| CN204676196U true CN204676196U (en) | 2015-09-30 |
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| CN201520344245.6U Withdrawn - After Issue CN204676196U (en) | 2015-05-26 | 2015-05-26 | A kind of melt magnetic device for spinning |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878455A (en) * | 2015-05-26 | 2015-09-02 | 青岛大学 | Melt magnetism spinning device and micro-nanofiber preparing method by utilizing melt magnetism spinning device |
| CN107338541A (en) * | 2016-09-28 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | A kind of nanofiber covering yarn preparation facilities |
| CN107338542A (en) * | 2016-09-28 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | A kind of magnetic spins core-spun composite yarn |
| CN107988633A (en) * | 2017-12-26 | 2018-05-04 | 蒋秋菊 | A kind of fiber fabrication setup and technique |
-
2015
- 2015-05-26 CN CN201520344245.6U patent/CN204676196U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878455A (en) * | 2015-05-26 | 2015-09-02 | 青岛大学 | Melt magnetism spinning device and micro-nanofiber preparing method by utilizing melt magnetism spinning device |
| CN104878455B (en) * | 2015-05-26 | 2017-03-15 | 青岛大学 | A kind of melt magnetic device for spinning and the method for preparing micro nanometer fiber using the device |
| CN107338541A (en) * | 2016-09-28 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | A kind of nanofiber covering yarn preparation facilities |
| CN107338542A (en) * | 2016-09-28 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | A kind of magnetic spins core-spun composite yarn |
| CN107988633A (en) * | 2017-12-26 | 2018-05-04 | 蒋秋菊 | A kind of fiber fabrication setup and technique |
| CN107988633B (en) * | 2017-12-26 | 2020-08-07 | 普宁鑫盛印刷包装有限公司 | Fiber manufacturing device and process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150930 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |