CN106119988A - The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array and electrospinning process - Google Patents
The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array and electrospinning process Download PDFInfo
- Publication number
- CN106119988A CN106119988A CN201610657585.3A CN201610657585A CN106119988A CN 106119988 A CN106119988 A CN 106119988A CN 201610657585 A CN201610657585 A CN 201610657585A CN 106119988 A CN106119988 A CN 106119988A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- face
- cylinder
- rectangle
- electrostatic spinning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Abstract
The invention discloses electrostatic spinning nozzle and the electrospinning process of a kind of face of cylinder rectangle five nozzle array, including body, described body has the face of cylinder being positioned at top and is provided with at least two group export structures, each group export structure is arranged along the axis direction linearly array on the face of cylinder, adjacent sets export structure is spaced a distance, each group export structure includes five connecting holes being opened on the face of cylinder, needle nozzle all it is connected on each connecting hole, each needle nozzle extends and contour along the normal direction on the face of cylinder, during in same group of export structure, the projection in the horizontal plane of each connecting hole is respectively at the end points of rectangle and this rectangle in the heart, two adjacent rectangles are zhou duicheng tuxing, and axis of symmetry is parallel to the limit of rectangle.The present invention each needle nozzle electric field intensity difference is less, and the most advanced and sophisticated electric field of each nozzle is more uniform.Present invention can apply to electrostatic spinning.
Description
Technical field
The present invention relates to electrostatic spinning field, particularly relate to the electrostatic spinning spray of a kind of face of cylinder rectangle five nozzle array
Head and electrospinning process.
Background technology
The patent of invention of Application No. 200910031948.2 discloses a kind of array multi-nozzle electrospinning device, utilizes
Multiple shower nozzles that the most linearly rectangular array is arranged carry out spinning, can realize the production in enormous quantities of electrospun fiber membrane material.
But after using for a long time, technical staff finds to postpone in array cloth in the plane when shower nozzle, each shower nozzle
Most advanced and sophisticated electric field can influence each other, disturb so that between different shower nozzles, electric field differs greatly and causes spinning uneven.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to provide the Static Spinning of a kind of face of cylinder rectangle five nozzle array
Silk shower nozzle, the most advanced and sophisticated electric field of its nozzle is the most uniform.
The technical solution adopted in the present invention is:
The electrostatic spinning nozzle of a kind of face of cylinder rectangle five nozzle array, including body, described body has one and is positioned at top
The face of cylinder and be provided with at least two group export structures, each group export structure arranges along the axis direction linearly array on the face of cylinder,
Adjacent sets export structure is spaced a distance, and each group export structure includes five connecting holes being opened on the face of cylinder, Mei Gelian
Meeting Kong Shangjun and be connected to needle nozzle, each needle nozzle extends and contour along the normal direction on the face of cylinder, respectively connects in same group of export structure
Connecing hole projection in the horizontal plane to be respectively in the end points of rectangle and this rectangle in the heart, two adjacent rectangles are axle pair
Claim figure, and axis of symmetry is parallel to the limit of rectangle.
As a further improvement on the present invention, projection in the horizontal plane is in the connecting hole of rectangular centre point and is positioned at cylinder
On the top line in face.
As a further improvement on the present invention, the length-width ratio of rectangle is。
As a further improvement on the present invention, adjacent export structure is spaced apart equal with the width of rectangle.
The present invention also provides for a kind of electrospinning process, and it the technical scheme is that
Using above-mentioned electrostatic spinning nozzle, be coated on by spinning liquid on each needle nozzle, spinning liquid is at needle nozzle, collection dress
Putting generation induced jet under formed induction electric field, induced jet is induced to collection device and forms fiber.
It addition, the electrostatic spinning nozzle of the present invention can also use following structure:
Described needle nozzle has the sap cavity that of hollow, and described body surface has inlet, and body interior has solution channel,
Described go out sap cavity by corresponding connecting hole, solution channel connection inlet.
The electrospinning process of this electrostatic spinning nozzle is as follows:
In injecting sap cavity by spinning liquid by solution channel and arrive needle nozzle top, spinning liquid is in needle nozzle, collection
Producing induced jet under the induction electric field that device is formed, induced jet is induced to collection device and forms fiber.
The invention has the beneficial effects as follows: the present invention respectively organizes the export structure axis direction along the face of cylinder linear battle array in interval
Row are arranged, the projection in the horizontal plane of six connecting holes of each group export structure is respectively at end points and the symmetrical centre of rectangle
On, then each connecting hole subpoint on the projection surface defines the track of rectangular symmetrical array, this arrangement relative to
In the plane for the prior art in the nozzle of array arranged in tracks, each nozzle electric field intensity difference is less, the point of each nozzle
End electric field is more uniform.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the front view of electrostatic spinning nozzle；
Fig. 2 is the side view of electrostatic spinning nozzle；
Fig. 3 is the top view of electrostatic spinning nozzle；
Fig. 4 is the schematic diagram of electrostatic spinning process；
Fig. 5 is schematic diagram in three row's arranged in linear arrays shower nozzles in the plane；
Fig. 6 is the schematic diagram that the most rectangular five jet array arrange shower nozzle；
Fig. 7 is the Electric Field Simulation result schematic diagram of arrangement in Fig. 5；
Fig. 8 is the Electric Field Simulation result schematic diagram of arrangement in Fig. 6；
Fig. 9 is Electric Field Simulation result schematic diagram of the present invention.
Detailed description of the invention
The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array as shown in Figure 1 to Figure 3, including body 1, body 1 has
Having the face of cylinder being positioned at top and be provided with at least two group export structures, described export structure is for collecting and jet spinning
Liquid.
Often group export structure is by five connecting holes being opened on the face of cylinder and the pin type being connected on connecting hole
Nozzle 2 forms, and the connecting hole in accompanying drawing overlaps with needle nozzle 2, and therefore connecting hole does not the most indicate.Such as Fig. 3
Shown in, these five connecting holes project in the symmetrical centre of end points and this rectangle being respectively at rectangle, the most in the horizontal plane
Being the track by constituting rectangle after wherein four subpoint lines, last subpoint is positioned at the center of this rectangle.Embodiment
In, each group export structure along the axis on the face of cylinder linearly array arrange, and, later group export structure is relative to previous group
Export structure is symmetrical and from a distance on the axis direction on the face of cylinder, and the export structure of adjacent sets is zhou duicheng tuxing.
So, it is reflected on horizontal plane, i.e. constitutes the linear array figure of multiple separation, each list of this linear array figure
Unit has the rectangle at symmetrical midpoint for centre, and the axis of symmetry of adjacent two rectangles is parallel to the minor face of rectangle.
Thus, electrostatic spinning nozzle i.e. defines the rectangle five nozzle array structure at face of cylinder axis direction.
Above-mentioned needle nozzle 2 is needle point structure away from the end of connecting hole, and this kind of needle nozzle 2 is commonly used in the art
Nozzle structure, is not explained in detail at this.The needle nozzle 2 often organizing export structure is all contour, and different group output
Each needle nozzle 2 of structure is also contour, namely all of needle nozzle 2 is both with respect to contour for the face of cylinder.These pins
Formula nozzle 2 extends along the normal direction on the face of cylinder.
Above-mentioned body 1 can be complete cylindrical structure thus its surface is the face of cylinder, it is also possible to be only one
Part has the structure on the face of cylinder.
Have above-mentioned connecting hole, the electrostatic spinning nozzle of needle nozzle track can greatly reduce in each needle nozzle electric field
Influence each other so that the most advanced and sophisticated electric field of each needle nozzle is more uniform.
In embodiment, five connecting holes of each group export structure can essentially regard five tops at a pyrometric cone as
On point, the connecting hole being wherein positioned at pyrometric cone top is located exactly on the top line on the face of cylinder, namely this connecting hole is in the horizontal plane
Subpoint define the central point 31 of above-mentioned rectangle, the central point of adjacent sets rectangle is the most in a straight line.This arrangement
It is more beneficial for ensureing the uniform of most advanced and sophisticated electric field.
Preferably, as it is shown on figure 3, the length-width ratio of above-mentioned each rectangle is.It is to be understood that five connecting holes
Subpoint has equally constituted two relative equilateral triangles of drift angle 32,33, thus the rectangle that wherein four subpoints are constituted
Length-width ratio be。
Preferably, adjacent export structure is spaced apart equal with the width of rectangle.Specifically, as it is shown on figure 3, subpoint
34 and the distance of subpoint 35 be the distance of two rectangles, it is also possible to regarding the spacing of two groups of export structures as, this spacing is equal to
The minor face of any one rectangle.This arrangement is more beneficial for ensureing the uniform of most advanced and sophisticated electric field.
The electrospinning process of above-described embodiment is as follows:
As shown in Figure 4, being evenly applied on each needle nozzle 2 by outside coating unit by spinning liquid, body 1 is relative to receipts
Acquisition means 4 is fixed, and needle nozzle 2 is towards collection device 4, and spinning liquid is in needle nozzle 2, collection device 4 institute
Producing induced jet under the induction electric field formed, induced jet is induced to collection device 4 and forms fiber.
In other embodiments of electrostatic spinning nozzle, what needle nozzle 2 can have hollow goes out sap cavity, and this goes out sap cavity and passes through
Before and after logical needle nozzle 2, having inlet on body 1 surface, body 1 is internal has solution channel, goes out sap cavity by correspondence
Connecting hole, solution channel connection inlet.Now, connecting hole may be considered a spray orifice.
The electrospinning process using the preferred embodiment is as follows:
As shown in Figure 4, body 1 is fixed relative to collection device 4, and needle nozzle 2 is towards collection device 4, will
Spinning liquid injects in sap cavity by solution channel and arrives needle nozzle 2 top, and spinning liquid is at needle nozzle 2, collection device 4
Producing induced jet under the induction electric field formed, induced jet is induced to collection device 4 and forms fiber.This spinning process
Can continue with spun structure and carry out spinning incessantly.
Below by way of Electric Field Simulation the electrostatic spinning nozzle in embodiment and the most linearly array arranged with
And the most rectangular five nozzle arrays arrange shower nozzle contrast.
Simulation parameter is as follows: needle nozzle 2 diameter 2mm, and the height of nozzle-end to the face of cylinder is 15mm, such as Fig. 3 institute
In the top view (floor projection) shown, the spacing of adjacent nozzle subpoint is 20mm, and nozzle material is rustless steel, the face of cylinder straight
Footpath is 100mm, a length of 220mm, and material is rustless steel.Face of cylinder top line distance collection device distance is 115mm, collection device
A width of 180mm, a length of 240mm, thickness is 2mm, and material is aluminum.Simulation software is comsol, and emulation voltage is 50kv.Institute's power taking field
It is electric field at nozzle tip 1mm.
The nozzle 61 of contrast simulation becomes three row's arranged in linear arrays in plane 6, as shown in Figure 5.Nozzle 61 diameter 2mm,
Nozzle-end is 15mm to the height of plane 6, and adjacent nozzle spacing is 20mm, and material is rustless steel.The top of nozzle 61 is from also
Not shown collection device distance is 100mm, a width of 180mm of collection device, a length of 240mm, and thickness is 2mm, and material is aluminum.Emulation
Software is comsol, and emulation voltage is 50kv；Institute's power taking field is electric field at nozzle tip 1mm.
As shown in Figure 6, the nozzle 51 of contrast simulation rectangular five nozzle symmetric array in plane 5 are arranged, this layout institute
Formed figure connecting hole each with electrostatic spinning nozzle in embodiment project on horizontal plane on formation figure consistent.Spray
Mouth 51 diameter 2mm, the height of nozzle-end to plane 5 is 15mm, and adjacent nozzle spacing is 20mm, and material is rustless steel.Nozzle
The top of 51 from and not shown collection device distance be 100mm, a width of 180mm of collection device, a length of 240mm, thickness is 2mm,
Material is aluminum.Simulation software is comsol, and emulation voltage is 50kv；Institute's power taking field is electric field at nozzle tip 1mm.
Comparison diagram 7, Fig. 8 and Fig. 9 are simulation result, and in Fig. 9, the electric field intensity difference of adjacent needle nozzle is less；And Fig. 7
Shown in Fig. 8, the electric field intensity gap of adjacent nozzle substantially big than in Fig. 9.Therefore this electrostatic spinning nozzle is used to be obtained
Electric field evenly.
The above is the preferred embodiment of the present invention, and it is not intended that limiting the scope of the invention.
Claims (7)
1. an electrostatic spinning nozzle for face of cylinder rectangle five nozzle array, including body (1), it is characterised in that: described body
(1) having the face of cylinder being positioned at top and be provided with at least two group export structures, each group export structure is along the axis on the face of cylinder
Direction linearly array is arranged, adjacent sets export structure is spaced a distance, and each group export structure includes being opened on the face of cylinder
Five connecting holes, each connecting hole is all connected to needle nozzle (2), each needle nozzle (2) along the face of cylinder normal direction extend and
It is contour, during in same group of export structure, the projection in the horizontal plane of each connecting hole is respectively at end points and this rectangle of rectangle
In the heart, two adjacent rectangles are zhou duicheng tuxing, and axis of symmetry is parallel to the limit of rectangle.
The electrostatic spinning nozzle of the face of cylinder the most according to claim 1 rectangle five nozzle array, it is characterised in that: in level
Projection on face is in the connecting hole of rectangular centre point and is positioned on the top line on the face of cylinder.
The electrostatic spinning nozzle of the face of cylinder the most according to claim 1 rectangle five nozzle array, it is characterised in that: rectangle
Length-width ratio is。
The electrostatic spinning nozzle of the face of cylinder the most according to claim 1 rectangle five nozzle array, it is characterised in that: adjacent defeated
The distance going out spacing structure is equal with the width of rectangle.
5., according to the electrostatic spinning nozzle of face of cylinder rectangle five nozzle array described in claim 1 or 2 or 3 or 4, its feature exists
In: described needle nozzle (2) has the sap cavity that of hollow, and described body (1) surface has inlet, and body (1) is internal to be had
Solution channel, described in go out sap cavity by corresponding connecting hole, solution channel connection inlet.
6. an electrospinning process, it is characterised in that: use the electrostatic spinning nozzle described in claim 1 or 2 or 3 or 4, will
Spinning liquid is coated on each needle nozzle (2), and spinning liquid produces under the induction electric field that needle nozzle (2), collection device are formed
Raw induced jet, induced jet is induced to collection device and forms fiber.
7. an electrospinning process, it is characterised in that: use the electrostatic spinning nozzle described in claim 5, spinning liquid is led to
Crossing in solution channel injects sap cavity and arrive needle nozzle (2) top, spinning liquid is in needle nozzle (2), collection device institute shape
Producing induced jet under the induction electric field become, induced jet is induced to collection device and forms fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610657585.3A CN106119988A (en) | 2016-08-11 | 2016-08-11 | The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array and electrospinning process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610657585.3A CN106119988A (en) | 2016-08-11 | 2016-08-11 | The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array and electrospinning process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106119988A true CN106119988A (en) | 2016-11-16 |
Family
ID=57257802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610657585.3A Pending CN106119988A (en) | 2016-08-11 | 2016-08-11 | The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array and electrospinning process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106119988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130305A (en) * | 2017-03-21 | 2017-09-05 | 广东工业大学 | Electrospinning device and its with the positive continuous shower nozzle of the nozzle of truncated rectangular pyramids nine of auxiliary electrode |
| CN107142532A (en) * | 2017-07-19 | 2017-09-08 | 广东工业大学 | A kind of electrostatic spinning nozzle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077474A (en) * | 2007-01-12 | 2007-11-28 | 张爱华 | Centrifugal force auxiliary using spinning jet electrofluid mechanics method and uses thereof |
| CN101189368A (en) * | 2005-06-07 | 2008-05-28 | 埃尔马科有限公司 | A method and device for production of nanofibres from the polymeric solution through electrostatic spinning |
| US20080131615A1 (en) * | 2006-12-05 | 2008-06-05 | Nanostatics, Llc | Electrospraying/electrospinning array utilizing a replacement array of individual tip flow restriction |
| CN101586288A (en) * | 2009-07-06 | 2009-11-25 | 江苏泰灵生物科技有限公司 | Array multi-nozzle electrospinning device |
| KR20110026185A (en) * | 2009-09-07 | 2011-03-15 | 한국생산기술연구원 | Apparatus and method for manufacturing nanofiber web using electro-spinning |
| CN102704194A (en) * | 2012-06-25 | 2012-10-03 | 天津工业大学 | Non-woven cloth production device for curtain solid pin electrode nano fiber |
| CN103334163A (en) * | 2013-06-18 | 2013-10-02 | 清华大学 | Electrospinning sprayer unit, electrospinning liquid filamentation device and electrostatic spinning machine |
| CN103668488A (en) * | 2013-12-05 | 2014-03-26 | 厦门大学 | Fiber jetting device |
| CN204918858U (en) * | 2015-07-06 | 2015-12-30 | 苏州大学 | Batch production nanofiber's electrostatic spinning device |
| CN105369366A (en) * | 2015-10-10 | 2016-03-02 | 北京化工大学 | Needleless electrostatic spinning device with porous flexible pipe |
-
2016
- 2016-08-11 CN CN201610657585.3A patent/CN106119988A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189368A (en) * | 2005-06-07 | 2008-05-28 | 埃尔马科有限公司 | A method and device for production of nanofibres from the polymeric solution through electrostatic spinning |
| US20080131615A1 (en) * | 2006-12-05 | 2008-06-05 | Nanostatics, Llc | Electrospraying/electrospinning array utilizing a replacement array of individual tip flow restriction |
| CN101077474A (en) * | 2007-01-12 | 2007-11-28 | 张爱华 | Centrifugal force auxiliary using spinning jet electrofluid mechanics method and uses thereof |
| CN101586288A (en) * | 2009-07-06 | 2009-11-25 | 江苏泰灵生物科技有限公司 | Array multi-nozzle electrospinning device |
| KR20110026185A (en) * | 2009-09-07 | 2011-03-15 | 한국생산기술연구원 | Apparatus and method for manufacturing nanofiber web using electro-spinning |
| CN102704194A (en) * | 2012-06-25 | 2012-10-03 | 天津工业大学 | Non-woven cloth production device for curtain solid pin electrode nano fiber |
| CN103334163A (en) * | 2013-06-18 | 2013-10-02 | 清华大学 | Electrospinning sprayer unit, electrospinning liquid filamentation device and electrostatic spinning machine |
| CN103668488A (en) * | 2013-12-05 | 2014-03-26 | 厦门大学 | Fiber jetting device |
| CN204918858U (en) * | 2015-07-06 | 2015-12-30 | 苏州大学 | Batch production nanofiber's electrostatic spinning device |
| CN105369366A (en) * | 2015-10-10 | 2016-03-02 | 北京化工大学 | Needleless electrostatic spinning device with porous flexible pipe |
Non-Patent Citations (2)
| Title |
|---|
| YING YANG等: "A Shield Ring Enhanced Equilateral Hexagon Distributed Multi-needle Electrospinning Spinneret", 《IEEE DIELECTRICS AND ELECTRICAL INSULATION SOCIETY》 * |
| 何建新等: "《新型纤维材料学》", 31 July 2014, 东华大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130305A (en) * | 2017-03-21 | 2017-09-05 | 广东工业大学 | Electrospinning device and its with the positive continuous shower nozzle of the nozzle of truncated rectangular pyramids nine of auxiliary electrode |
| CN107130305B (en) * | 2017-03-21 | 2019-08-06 | 广东工业大学 | Electrospinning device and its with the continuous spray head of positive nine nozzle of truncated rectangular pyramids of auxiliary electrode |
| CN107142532A (en) * | 2017-07-19 | 2017-09-08 | 广东工业大学 | A kind of electrostatic spinning nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106167921A (en) | The electrostatic spinning nozzle of face of cylinder tetragon symmetric array and electrospinning process | |
| CN203976987U (en) | The even air feed flow passage structure of a kind of sheath layer air-flow | |
| CN106119986A (en) | The electrostatic spinning nozzle of face of cylinder hexagon seven nozzle array and electrospinning process | |
| CN104611772B (en) | Electrostatic spinning device for preparing coaxial nanofiber in batches | |
| WO2019075999A1 (en) | Annular electrostatic jet mechanism and electrostatic jet apparatus | |
| CN109023561B (en) | Electrostatic spinning device for preparing core-shell structure fibers in batches | |
| CN103924308A (en) | Solution differential electrostatic spinning device assisted by internal and external high-speed airflow | |
| CN105274635A (en) | Static bubble spinning device | |
| CN106119988A (en) | The electrostatic spinning nozzle of face of cylinder rectangle five nozzle array and electrospinning process | |
| CN103334166B (en) | Electrospinning liquid filament forming device and electrostatic spinning machine | |
| CN106283215A (en) | The electrostatic spinning nozzle of face of cylinder hexagon spaced array and electrospinning process | |
| CN106119987A (en) | The electrostatic spinning nozzle of a kind of face of cylinder annular array and electrospinning process | |
| CN106119982A (en) | The electrostatic spinning nozzle of a kind of face of cylinder hexagonal array and electrospinning process | |
| CN106119991A (en) | The electrostatic spinning nozzle of a kind of face of cylinder triangular wave array and electrospinning process | |
| CN203639618U (en) | Multi-micropore electrostatic spinning spinneret | |
| CN103668482B (en) | Many jet flow static electricities spinning nozzle that a kind of electric field is uniform | |
| CN106167920A (en) | The electrostatic spinning nozzle of face of cylinder triangular shaft symmetric array and electrospinning process | |
| CN106119989A (en) | The electrostatic spinning nozzle of face of cylinder rhombus spaced array and electrospinning process | |
| CN106119992A (en) | The electrostatic spinning nozzle of face of cylinder triangular compartments array and electrospinning process | |
| CN106119985A (en) | The electrostatic spinning nozzle of face of cylinder triangle center symmetric array and spinning process | |
| CN105088366B (en) | A kind of electrostatic spinning apparatus of batch micro operations nanofiber, method and system | |
| CN107245763A (en) | A kind of electrostatic spinning array shower nozzle | |
| CN205821540U (en) | The electrostatic spinning nozzle of a kind of trapezoidal wave array and electrostatic spinning apparatus | |
| CN106968020A (en) | Electrospinning device and its positive truncated rectangular pyramids spaced array shower nozzle with auxiliary electrode | |
| JP5946565B1 (en) | Spinneret and ultrafine fiber manufacturing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |