CN106400138A - Spinning device for producing fibroin nano filaments and fiber yarns - Google Patents
Spinning device for producing fibroin nano filaments and fiber yarns Download PDFInfo
- Publication number
- CN106400138A CN106400138A CN201611111252.7A CN201611111252A CN106400138A CN 106400138 A CN106400138 A CN 106400138A CN 201611111252 A CN201611111252 A CN 201611111252A CN 106400138 A CN106400138 A CN 106400138A
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- China
- Prior art keywords
- shower nozzle
- spinning
- fiber
- spray orifice
- producing fibroin
- 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.)
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
- D01F4/02—Monocomponent artificial filaments or the like of proteins; Manufacture thereof from fibroin
-
- 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
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Dispersion Chemistry (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a spinning device for producing fibroin nano filaments and fiber yarns. The electrical conduction effect of a spinning fluid reaches the best state by adopting a metal pyramid body spray head, and the spinning fluid is further extruded and compressed at the top and edge of the spray head by forming spraying holes in the top and edge of the spray head and combining with a driving mechanism, so that filaments are outwards sprayed out to the most degree, and the production efficiency of the filaments is high. The edges of the pyramid body are correspondingly provided with blower guns, the blower guns blow the filaments to be gathered from outside to inside, so that the filaments are finally gathered into yarns, a large amount of yarns is formed, and the industrial demand is met.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus are and in particular to a kind of spinning producing fibroin nanofibers and silvalin
Silk device.
Background technology
Electrostatic spinning is exactly the specific form of polymeric fluid electrostatic atomization, and now the material is divided in atomization is not small
Drop, but the small jet of polymer, can run considerably long distance, finally be solidified into fiber.
Up to now, electrostatic spinning technique has become as and prepares that nanofiber is the simplest, effective manner.Static Spinning is received
Rice fiber because having a high-specific surface area, high porosity, the advantage such as excellent mechanical property, in Filtration Adsorption, biological group
Weaver's journey, biomedical, the field such as individual protection is widely applied.Wherein, fibroin nanofiber is because have good
Biocompatibility, is widely used in biomedical sector, but when preparing fibroin nanofiber with electrostatic spinning technique, because
Excessive for fibroin concentration, it is frequently present of the problem of syringe needle blocking, spinning efficiency is low.And at this stage in fields such as scientific researches for silk
Cellulose fiber has larger demand, and existing apparatus are hardly possible effectively to produce substantial amounts of fibroin nanofiber.
Additionally, the nanofibrous structures in bionic bracket material are mostly different types of fiber felt, mostly there is mechanics
Poor performance is it is difficult to repeat the problems such as process.Fiber in nano fibre yarn by the axially in parallel arrangement along yarn, with respect to fiber
Felt has a preferable mechanical property, and can be utilized woven or knitting technology to be processed into the structural material of multi-form, but traditional
Technology is difficult to prepare silvalin in a large number it is impossible to meet industrial requirement.
Therefore, in view of problem above is it is necessary to propose a kind of new device for spinning, produce fibroin Nanowire for effective
Dimension silk and silvalin, it is to avoid the problem of syringe needle blocking in preparation process, improve production efficiency, to meet the demand of existing industry.
Content of the invention
In view of this, the invention provides a kind of device for spinning producing fibroin nanofibers and silvalin, by adopting
With setting spray orifice on the shower nozzle of metal pyramid, and the top in shower nozzle and seamed edge so that cellosilk farthest outwards sprays
Go out, effectively improve cellosilk ratio of briquetting, by the setting with reference to wind blowing gun, blow cellosilk ecto-entad and gather, a large amount of molding
Silvalin, meets industrial requirement.
A kind of device for spinning producing fibroin nanofibers being proposed according to the purpose of the present invention, including fiber generator
The liquid storage tank including shower nozzle and accommodating spinning liquid with fiber receptor, described fiber generator, the internal spinning liquid of liquid storage tank is even
Connect power supply, described shower nozzle is hollow pyramid, and described shower nozzle top and at least one seamed edge are provided with spray orifice, in described shower nozzle
Portion is connected with liquid storage tank；
Described fiber generator also includes a drive mechanism, and after energising, described spinning liquid is in this drive mechanism squeezing action
Under power, outwards gushing cellosilk from spray orifice after progressively compressing at shower nozzle top and seamed edge position, and be collected in fiber connects
Receive on device.
Preferably, described shower nozzle is metal Rhizoma Sparganii wimble structure, and three seamed edges of described shower nozzle all offer spray orifice.
Preferably, described seamed edge uniformly offers spray orifice from top to bottom.
Preferably, described spray orifice is arranged towards the direction of fiber receptor, and the centrage of spray orifice is to the central side of shower nozzle
Draw close.
Preferably, described shower nozzle at least one side is the curved form of indent or at least side towards shower nozzle center lateral bending
Folding so that the exterior angle of each drift angle in pyramid bottom surface and be more than 360 °.
Preferably, described drive mechanism includes a syringe and drives the flow pump of this syringe injection, described syringe
Front end is connected with liquid storage tank.
Preferably, described fiber receptor is to receive cylinder.
Preferably, described fiber receptor is the rotary grid mechanism of multigroup parallel pole composition, and described grid mechanism turns
Dynamic setting forms described reception cylinder, and fiber is deposited on the periphery of described grid mechanism.
A kind of device for spinning producing fibroin nano fibre yarn, using described device for spinning, outside described shower nozzle and each
Seamed edge corresponding position is provided with wind blowing gun, and wind blowing gun blows out air-flow towards shower nozzle top, the multiple fibre silk spraying from spray orifice
Blow to through wind blowing gun and gather formation silvalin at shower nozzle tip position, and be collected on fiber receptor.
Preferably, described wind blowing gun is fixed by a support, and described wind blowing gun is obliquely installed to shower nozzle central side, described
The height adjustable of frame.
Compared with prior art, the advantage of the device for spinning producing fibroin nanofibers and silvalin disclosed by the invention
It is：
By setting spray orifice on the shower nozzle using metal pyramid, and the top in shower nozzle and seamed edge so that spinning liquid is led
Electric effect reaches optimum state, and makes spinning liquid be pressed further by shrinking at shower nozzle top with seamed edge with reference to drive mechanism,
Cellosilk is farthest outwards sprayed, cellosilk production efficiency is high.Efficiently solve syringe needle blocking in conventional art
Problem.
Each seamed edge of pyramid is all correspondingly arranged wind blowing gun, and wind blowing gun blows cellosilk ecto-entad and gathers, and makes cellosilk
Final polymerization resultant yarn, a large amount of shaping fiber yarns, meet industrial requirement.
Additionally, by collecting fiber using receiving cylinder, receiving cylinder and be vertically installed in the surface of shower nozzle, to being wrapped in
Nano fibre yarn together can play winding, stretching action, further enhances the paralleling effect of fibroin fiber.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation producing filametntary device for spinning.
Fig. 2 is the structural representation of the device for spinning producing silvalin.
Fig. 3 is the top view of shower nozzle and wind blowing gun configuration.
Fig. 4,5 be shower nozzle top view.
The title of the corresponding component representated by the numeral of in figure or letter：
1st, fiber generator 2, fiber receptor
11st, shower nozzle 12, liquid storage tank 13, spray orifice 14, power supply 15, syringe 16, flow pump 17, wind blowing gun 18,
Frame
Specific embodiment
Just as described in the background section, fibroin nanofiber, because having good biocompatibility, is widely used
In biomedical sector, but when preparing fibroin nanofiber with electrostatic spinning technique, because fibroin concentration is excessive, often deposit
In the problem of syringe needle blocking, spinning efficiency is low.And the fiber in nano fibre yarn is along the axially in parallel arrangement of yarn, with respect to
Fiber felt has preferable mechanical property, but conventional art is difficult to prepare silvalin in a large number it is impossible to meet industrial requirement.
The present invention is directed to deficiency of the prior art, there is provided a kind of spinning producing fibroin nanofibers and silvalin
Device, by setting spray orifice on the shower nozzle using metal pyramid, and the top in shower nozzle and seamed edge so that cellosilk maximum journey
The outside ejection of degree, effectively improves cellosilk ratio of briquetting, by the setting with reference to wind blowing gun, blows cellosilk ecto-entad and gathers
Hold together, a large amount of shaping fiber yarns, meet industrial requirement.
By specific embodiment, technical scheme will be clearly and completely described below.Obviously, retouched
The embodiment stated is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into the present invention
The scope of protection.
Embodiment 1
Refer to Fig. 1, a kind of device for spinning producing fibroin nanofibers, this device for spinning includes fiber generator 1
The liquid storage tank 12 including shower nozzle 11 and accommodating spinning liquid with fiber receptor 2, fiber generator 1, shower nozzle inside and liquid storage tank
Connection, the internal spinning liquid of liquid pool connects power supply；Spinning liquid in liquid storage tank can be delivered in shower nozzle and carry out spinning process, this shower nozzle
For hollow pyramid, shower nozzle top and at least one seamed edge are provided with spray orifice 13.This shower nozzle is metal material, in the present embodiment
Preferably employ copper material.Using copper shower nozzle, spinning liquid conductive effect is not only made to reach optimum state, and by combining rib
The structure of tapered makes spinning liquid be compressed reinforcement further when to shower nozzle top and seamed edge, contributes to fiber maximum journey
Degree quickly outwards sprays, it is to avoid the problem occurring blocking shower nozzle, a large amount of shaping fiber silks.
Fiber generator also includes a drive mechanism, and after energising, spinning liquid, under this drive mechanism squeezing action power, is spraying
Outwards gush cellosilk from spray orifice after progressively compressing at head and seamed edge position, and be collected on fiber receptor.
In the present embodiment, preferred sprinkler is the Rhizoma Sparganii wimble structure of hollow, and three seamed edges of shower nozzle all offer spray orifice.Excellent
Choosing, seamed edge uniformly offers spray orifice from top to bottom.A large amount of fibers can be molded the same time by the setting of a large amount of spray orifices
Bundle.The process units spinning efficiency that conventional nanofibers are compared in the setting of multiple spray orifices is greatly improved.Wherein shower nozzle removes and adopts
With outside Rhizoma Sparganii wimble structure, being also the form such as rectangular pyramid or pentagonal pyramid or polygonal pyramid.Show, triangular pyramid version is relatively through test
Other structures form is simple, and edge angles are less, and compression effectiveness preferably, therefore, generally selects using triangular pyramid form.
Additionally, shower nozzle seamed edge angle of inclination design contribute to filametntary parallel in the bottom-up motor process of fiber
Degree, also provides basis for being subsequently preferably wound around resultant yarn simultaneously.
Preferably, spray orifice is arranged towards the direction of fiber receptor, and the centrage of spray orifice is drawn close to the central side of shower nozzle.
There is a guide effect in the direction that the setting form of spray orifice sprays for cellosilk, by setting spray orifice towards fiber receptor
Put so that fibre bundle is further drawn close to centre, it is to avoid fibre bundle excessively dissipates and affects to collect, and gathers for next step simultaneously
Form silvalin to prepare.
In the present embodiment, drive mechanism includes a syringe 15 and the flow pump 16 driving the injection of this syringe, syringe 15
Front end is connected with liquid storage tank 12.By adjusting the size pushing syringe of flow pump, syringe promotes under the thrust of flow pump
Spinning liquid sprays in shower nozzle upwards.Drive mechanism can be for arbitrarily giving the structure of spinning liquid squeezing action power, specifically
Form is not limited.
Wherein, fiber receptor is to receive cylinder.Receive cylinder and rotate setting, the reception cylinder of continuous rotation is disposed vertically
Above shower nozzle, for comparing conventional electrostatic spining technology, to nanofibers, there is good stretching action, further add
The strong paralleling effect of fibroin fiber.And after shaping fiber yarn, receive cylinder to the nano fibre yarn energy being intertwined
Enough play winding, stretching, parallel effect, improves the quality of silvalin.
Preferably, fiber receptor is the rotary grid mechanism of multigroup parallel pole composition, and grid mechanism rotates setting shape
Become described reception cylinder, fiber is deposited on the periphery of grid mechanism.
As shown in Figure 2,3, the invention also discloses a kind of device for spinning producing fibroin nano fibre yarn, using above-mentioned system
Take the device for spinning of fibroin nanofibers, additionally, being provided with wind blowing gun 17 in shower nozzle 11 outside with each seamed edge corresponding position,
Wind blowing gun 17 blows out air-flow towards shower nozzle top, and the multiple fibre silk of ejection blows to through wind blowing gun gathers formation fibre at shower nozzle top
Dimension yarn, and be collected on fiber receptor.
Because the present embodiment preferably employs the nozzle of triangular pyramid version, therefore bottom is furnished with around triangular pyramid one week
Three groups of wind blowing guns, every group of wind blowing gun is arranged on a support 18, can arbitrarily adjust height and the anglec of rotation, and wind blowing gun gas
Stream temperature can arbitrarily be adjusted, and the optimal spinning condition of convenient exploration makes fibroin fiber be preferably entwined around resultant yarn the soonest.
This wind blowing gun is obliquely installed to shower nozzle central side, and the cellosilk being easy to spray spray orifice blows to center as far as possible
So that cellosilk is wound around resultant yarn, concrete angle of inclination sets as needed for side.
The operation principle of the present invention is as follows：
In spinning process, spinning liquid pushes in the shower nozzle of pyramid-type through syringe, adjusts flow pump uninterrupted, opens height
Voltage source, adjusts voltage swing, enables shower nozzle surrounding to spray uniform nanofibers, adjusts wind blowing gun angle and wind blowing gun
Air-flow size makes fibroin nanofibers inwardly gather winding resultant yarn under wind blowing gun effect in motor process upwards, obtains
Preferably yarn is finally on reception cylinder.
Embodiment 2
Refer to Fig. 4, remaining is same as Example 1, difference is, at least one side of shower nozzle is the song of indent
Face form, by being recessed curved surface by side it is ensured that spinning liquid further compresses it is ensured that spraying from spray orifice at seamed edge
Cellosilk be in spurting, speed, in combination with rotate setting reception cylinder, be easy to collect substantial amounts of orderly fibroin
Nanofiber.
Embodiment 3
Refer to Fig. 5, remaining is same as Example 1, difference is, at least side bends towards shower nozzle central side,
Make the exterior angle of pyramid bottom surface each drift angle abc and be more than 360 °.The general exterior angle of each corner in pyramid bottom surface and be 360 °,
The interior angle of each drift angle in after bending so that bottom surface shrinks and diminishes, and further plays the effect shrinking extrusion spinning liquid so that spinning
Liquid ejects from spray orifice.
The invention discloses a kind of device for spinning producing fibroin nanofibers, by the spray using metal pyramid
Spray orifice is arranged on head, and the top in shower nozzle and seamed edge so that spinning liquid conductive effect reaches optimum state, and combine driving machine
Structure makes spinning liquid be pressed further by shrinking so that cellosilk farthest outwards sprays at shower nozzle top with seamed edge, fine
Dimension silk production efficiency is high.Efficiently solve the problems, such as syringe needle blocking in conventional art.
Each seamed edge of pyramid is all correspondingly arranged wind blowing gun, and wind blowing gun blows cellosilk ecto-entad and gathers, and makes cellosilk
Final polymerization resultant yarn, a large amount of shaping fiber yarns, meet industrial requirement.
Additionally, by collecting fiber using receiving cylinder, receiving cylinder and be vertically installed in the surface of shower nozzle, to being wrapped in
Nano fibre yarn together can play winding, stretching action, further enhances the paralleling effect of fibroin fiber.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of device for spinning producing fibroin nanofibers, including fiber generator and fiber receptor, described fiber is sent out
The liquid storage tank that raw device includes shower nozzle and accommodates spinning liquid, the internal spinning liquid of liquid storage tank connects power supply it is characterised in that described spray
Head is hollow pyramid, and described shower nozzle top and at least one seamed edge are provided with spray orifice, and described shower nozzle is internal with liquid storage tank even
Logical；
Described fiber generator also includes a drive mechanism, after energising, described spinning liquid under this drive mechanism squeezing action power,
Outwards gush cellosilk from spray orifice after progressively compressing at shower nozzle top and seamed edge position, and be collected in fiber receptor
On.
2. the device for spinning producing fibroin nanofibers according to claim 1 is it is characterised in that described shower nozzle is gold
Belong to Rhizoma Sparganii wimble structure, three seamed edges of described shower nozzle all offer spray orifice.
3. the device for spinning producing fibroin nanofibers according to claim 2 is it is characterised in that described seamed edge is from upper
Uniformly offer spray orifice to lower.
4. the device for spinning producing fibroin nanofibers according to claim 1 is it is characterised in that described spray orifice direction
The direction of fiber receptor is arranged, and the centrage of spray orifice is drawn close to the central side of shower nozzle.
5. the device for spinning producing fibroin nanofibers according to claim 1 it is characterised in that described shower nozzle at least
One side is the curved form of indent or at least side towards the bending of shower nozzle central side so that the exterior angle of each drift angle in pyramid bottom surface
With more than 360 °.
6. the device for spinning producing fibroin nanofibers according to claim 1 is it is characterised in that described drive mechanism
Including a syringe and the flow pump driving the injection of this syringe, described front end of the syringe needle is connected with liquid storage tank.
7. the device for spinning producing fibroin nanofibers according to claim 1 is it is characterised in that described fiber receives
Device is to receive cylinder.
8. the device for spinning producing fibroin nanofibers according to claim 7 is it is characterised in that described fiber receives
Device is the rotary grid mechanism of multigroup parallel pole composition, and described grid mechanism rotates setting and forms described reception cylinder, fiber
It is deposited on the periphery of described grid mechanism.
9. a kind of device for spinning producing fibroin nano fibre yarn is it is characterised in that adopt described in any one of claim 1-8
Device for spinning, is provided with wind blowing gun with each seamed edge corresponding position outside described shower nozzle, wind blowing gun puffs away towards shower nozzle top
Stream, the multiple fibre silk spraying from spray orifice blows to through wind blowing gun at shower nozzle tip position gathers formation silvalin, and is collected in fibre
On dimension receptor.
10. the device for spinning producing fibroin nano fibre yarn according to claim 9 is it is characterised in that described wind blowing gun
Fixed by a support, described wind blowing gun is obliquely installed to shower nozzle central side, the height adjustable of described support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111252.7A CN106400138B (en) | 2016-12-02 | 2016-12-02 | A kind of device for spinning for producing fibroin nanofibers and silvalin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111252.7A CN106400138B (en) | 2016-12-02 | 2016-12-02 | A kind of device for spinning for producing fibroin nanofibers and silvalin |
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| Publication Number | Publication Date |
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| CN106400138A true CN106400138A (en) | 2017-02-15 |
| CN106400138B CN106400138B (en) | 2018-06-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676687A (en) * | 2017-03-09 | 2017-05-17 | 苏州大学 | Air supply device for system for preparing nanometer fiber yarns |
| IT201800007392A1 (en) * | 2018-07-20 | 2020-01-20 | PROCESS TO PRODUCE A SILK THREAD |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4803113B2 (en) * | 2007-05-29 | 2011-10-26 | パナソニック株式会社 | Nanofiber compounding method and apparatus |
| CN105624807B (en) * | 2016-04-01 | 2017-12-29 | 厦门大学 | A kind of micropore batch electrostatic spinning apparatus based on Weissenberg effect |
| CN206256199U (en) * | 2016-12-02 | 2017-06-16 | 苏州大学 | A kind of device for spinning for producing fibroin nanofibers and silvalin |
-
2016
- 2016-12-02 CN CN201611111252.7A patent/CN106400138B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676687A (en) * | 2017-03-09 | 2017-05-17 | 苏州大学 | Air supply device for system for preparing nanometer fiber yarns |
| IT201800007392A1 (en) * | 2018-07-20 | 2020-01-20 | PROCESS TO PRODUCE A SILK THREAD |
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| Publication number | Publication date |
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| CN106400138B (en) | 2018-06-01 |
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