CN114262948A - Suction system - Google Patents
Suction system Download PDFInfo
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- CN114262948A CN114262948A CN202111650925.7A CN202111650925A CN114262948A CN 114262948 A CN114262948 A CN 114262948A CN 202111650925 A CN202111650925 A CN 202111650925A CN 114262948 A CN114262948 A CN 114262948A
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- suction
- spinning
- oil mist
- monomer
- adsorption
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 97
- 238000009987 spinning Methods 0.000 claims abstract description 97
- 239000003595 mist Substances 0.000 claims abstract description 92
- 239000000178 monomer Substances 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000006855 networking Effects 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a suction system, which comprises oil mist suction equipment and spinning monomer suction equipment; the spinning monomer suction device comprises a first suction mechanism and a plurality of spinning monomer suction nozzles; the spinning monomer suction nozzle is communicated with the first suction mechanism through a spinning monomer suction pipe; the spinning monomer suction nozzles are all positioned in a spinning area formed by the oil nozzle component and the spinning box body, the spinning monomer suction nozzles are positioned on the same horizontal plane and are sequentially arranged, and the total length of the spinning monomer suction nozzles is less than or equal to the length of the spinning area; the oil mist suction equipment comprises an oil mist suction nozzle and a second suction mechanism; the oil mist suction nozzle is communicated with the second suction mechanism through an oil mist suction pipe; the oil mist suction nozzle is embedded in one side of the pre-networking device, and the inner cavity of the oil mist suction nozzle is horn-shaped. The invention achieves the purpose of improving the fiber quality by improving the oil mist collection effect and the spinning monomer adsorption effect.
Description
Technical Field
The invention relates to the technical field of fine denier porous fiber spinning, in particular to a suction system.
Background
In the spinning process of the fine-denier porous fiber, a large amount of spinning monomers can be attached to the fiber, and if the spinning monomers are not removed in time, the quality of the fiber is seriously influenced. In addition, fine denier porous fiber spinning in-process can produce the oil mist, if not clear up the oil mist in time, the oil mist is attached to on the cellosilk, can influence the quality of cellosilk equally, and can influence the operational environment in the workshop. Therefore, a spinning monomer suction device and an oil mist collection device are needed to be arranged on a spinning production line of the fine-denier porous fiber, and oil mist collection and spinning monomer collection are carried out on the fine-denier porous fiber. However, the suction channel of the existing suction device has a small suction area, and the suction channel cannot be increased due to the limited installation space of the spinning monomer suction device, so that the suction device with larger suction force is required to be selected for collecting the spinning monomer in order to improve the suction effect, the production cost is increased, and the noise of a production workshop is increased; and oil mist collection equipment is less because the diameter of oil mist suction tube, and the absorption that leads to the oil mist is not good with the collection effect, because the space of oil mist suction tube receives the limitation, in order to improve the absorption effect of oil mist, only can select the oil mist collection equipment that suction is bigger to carry out the oil mist and collect, can have increase manufacturing cost and lead to the problem of workshop noise increase equally.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a suction system is provided to improve the quality of fiber yarn without increasing the production cost.
In order to solve the technical problems, the invention adopts the technical scheme that:
a suction system comprises an oil mist suction device and a spinning monomer suction device;
the spinning monomer suction device comprises a first suction mechanism and a plurality of spinning monomer suction nozzles;
the spinning single body suction nozzle is communicated with the first suction mechanism through a spinning single body suction pipe;
the spinning monomer suction nozzles are all positioned in a spinning area formed by the oil nozzle assembly and the spinning box body, the spinning monomer suction nozzles are positioned on the same horizontal plane and are sequentially arranged, and the total length of the spinning monomer suction nozzles is less than or equal to the length of the spinning area;
the oil mist suction equipment comprises an oil mist suction nozzle and a second suction mechanism;
the oil mist suction nozzle is communicated with the second suction mechanism through the oil mist suction pipe;
the oil mist suction nozzle is embedded in one side of the pre-networking device, and a flow guide surface is arranged in the oil mist suction nozzle.
The invention has the beneficial effects that: the total length of the spinning monomer suction nozzles is smaller than that of a spinning area by arranging the spinning monomer suction nozzles, so that the adsorption pressure is greatly enhanced, the adsorption effect on the spinning monomers is improved, and the spinning monomers attached to fibers are greatly reduced in a limited space; under the prerequisite that spinning monomer's adhesion volume reduces in a large number on the cellosilk, the setting is tubaeform oil mist suction mouth, enlarges the adsorption area to can play the water conservancy diversion effect, make the oil mist can be adsorbed by second suction mechanism along the inner wall of oil mist suction mouth, improve the oil mist and collect the effect. Due to the reduction of the attachment amount of the spinning monomer, the oil mist is uniformly attached to the surface of the fiber yarn, and along with the improvement of the oil mist collecting effect, the attachment amount of the oil mist on the fiber yarn is greatly reduced, so that the fiber yarn of the same batch has uniform quality, and the quality is improved. The invention achieves the purpose of improving the quality of the cellosilk by improving the adsorption force on the spinning monomer, enlarging the adsorption area of the oil mist and reducing the adhesion amount of the spinning monomer and the adhesion amount of the oil mist on the fiber.
Drawings
FIG. 1 is a schematic view of the construction of an oil mist suction nozzle and a pre-networking device according to the present invention;
FIG. 2 is a front view of FIG. 1;
fig. 3 is a schematic view of the oil mist suction apparatus of the present invention;
fig. 4 is a sectional view of the oil mist suction nozzle in the present invention;
FIG. 5 is a schematic view showing the construction of a spinning cell sucking apparatus according to the present invention;
FIG. 6 is a sectional view of the spinning cell suction apparatus of the present invention.
Description of reference numerals:
1. an oil mist suction device; 11. an oil mist suction nozzle; 110. a first adsorption channel; 120. a second adsorption channel; 130. a main adsorption channel; 111. a body; 112. a suction nozzle fitting; 113. a first outer flow guide surface; 114. a second outer flow guide surface; 115. a first inner baffle; 116. a second inner baffle; 12. a second pumping mechanism;
2. spinning monomer suction equipment; 21. a first suction mechanism; 22. a spinning monomer suction nozzle; 221. a guide slope; 222. a pressure increasing member;
3. and (4) pre-networking the network devices.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1-6, a suction system includes an oil mist suction device and a spin monomer suction device;
the spinning monomer suction device comprises a first suction mechanism and a plurality of spinning monomer suction nozzles;
the spinning single body suction nozzle is communicated with the first suction mechanism through a spinning single body suction pipe;
the spinning monomer suction nozzles are all positioned in a spinning area formed by the oil nozzle assembly and the spinning box body, the spinning monomer suction nozzles are positioned on the same horizontal plane and are sequentially arranged, and the total length of the spinning monomer suction nozzles is less than or equal to the length of the spinning area;
the oil mist suction equipment comprises an oil mist suction nozzle and a second suction mechanism;
the oil mist suction nozzle is communicated with the second suction mechanism through the oil mist suction pipe;
the oil mist suction nozzle is embedded in one side of the pre-networking device, and an inner cavity of the oil mist suction nozzle is horn-shaped.
The working principle of the invention is as follows:
by increasing the adsorption pressure and the adsorption area, the collection effect of the spinning monomer and the oil mist is improved, the adhesion amount of the spinning monomer on the fiber is reduced firstly, the adhesion amount of the oil mist on the fiber is reduced later, the influence of the spinning monomer and the oil mist on the fiber is reduced, and the product quality is improved.
From the above description, the beneficial effects of the present invention are: the total length of the spinning monomer suction nozzles is smaller than that of a spinning area by arranging the spinning monomer suction nozzles, so that the adsorption pressure is greatly enhanced, the adsorption effect on the spinning monomers is improved, and the spinning monomers attached to fibers are greatly reduced in a limited space; under the prerequisite that spinning monomer's adhesion volume reduces in a large number on the cellosilk, the setting is tubaeform oil mist suction mouth, enlarges the adsorption area to can play the water conservancy diversion effect, make the oil mist can be adsorbed by second suction mechanism along the inner wall of oil mist suction mouth, improve the oil mist and collect the effect. Due to the reduction of the attachment amount of the spinning monomer, the oil mist is uniformly attached to the surface of the fiber yarn, and along with the improvement of the oil mist collecting effect, the attachment amount of the oil mist on the fiber yarn is greatly reduced, so that the fiber yarn of the same batch has uniform quality, and the quality is improved. The invention achieves the purpose of improving the quality of the cellosilk by improving the adsorption force on the spinning monomer, enlarging the adsorption area of the oil mist and reducing the adhesion amount of the spinning monomer and the adhesion amount of the oil mist on the fiber.
Furthermore, two guide inclined planes which are symmetrically arranged are arranged in the spinning monomer suction nozzle.
As can be seen from the above description, two guiding inclined planes are provided for playing a role in guiding flow, improving the adsorption effect and avoiding the accumulation of spinning monomers.
Further, the distance between the two guide inclined planes is gradually reduced along the air inlet direction.
From the above description, the distance between the two guiding inclined planes is gradually reduced along the air inlet direction, so that the adsorption pressure of the spinning monomer suction nozzle is further increased, and the adsorption effect is improved.
Furthermore, each guide inclined plane is provided with a pressure increasing piece for increasing the adsorption pressure;
the plenum is disposed along a length of the guide ramp.
As can be seen from the above description, the pressurizing piece is arranged to perform the function of guiding the air flow, and on the other hand, the pressurizing piece is used to reduce the flow area of the air flow, increase the adsorption pressure and improve the adsorption effect.
Further, the cross-section of the plenum is arcuate.
According to the description, the cross section of the pressurizing piece is arc-shaped and is used for increasing the adsorption pressure, meanwhile, the distance between the two oppositely arranged pressurizing pieces is gradually reduced along the air inlet direction and then gradually increased, and the cross section area of the air outlet is enlarged to reduce the noise.
Furthermore, the oil mist suction nozzle is provided with a first outer flow guide surface, a second outer flow guide surface, a first inner flow guide plate and a second inner flow guide plate in the vertical direction;
the first outer diversion surface and the first inner diversion plate are arranged oppositely to form a first adsorption channel;
the second outer flow guide surface and the second outer flow guide surface are oppositely arranged and form a second adsorption channel;
the first inner guide plate, the second inner guide plate and two side walls of the oil mist suction nozzle in the horizontal direction form a main adsorption channel, and an air outlet of the first adsorption channel and an air outlet of the second adsorption channel are respectively communicated with the main adsorption channel.
According to the above description, the first inner guide plate and the second inner guide plate form the first adsorption channel, the second adsorption channel and the main adsorption channel, so that the adsorption area is enlarged, the adsorption pressure is increased, and the oil mist collection effect is improved.
Furthermore, the longitudinal sections of the first outer flow guide surface, the second outer flow guide surface, the first inner flow guide plate and the second inner flow guide plate are all arc-shaped, the inner arc of the first outer flow guide surface is opposite to the inner arc surface of the first inner flow guide plate, and the inner arc of the second outer flow guide surface is opposite to the inner arc surface of the second inner flow guide plate.
According to the description, the longitudinal sections of the first inner guide plate and the second inner guide plate are arc-shaped, the adsorption pressures of the first adsorption channel, the second adsorption channel and the main adsorption channel can be increased simultaneously through the first inner guide plate and the second inner guide plate, and meanwhile, the oil mist collecting effect is improved, and the fiber quality is improved.
Further, the longitudinal section area of the air inlet of the first adsorption channel is smaller than that of the air outlet of the first adsorption channel;
and the longitudinal section area of the air inlet of the second adsorption channel is smaller than that of the air outlet of the second adsorption channel.
It can be known from the above description that the longitudinal section area of the air inlet of the first adsorption channel is smaller than the longitudinal section area of the air outlet of the first adsorption channel and the longitudinal section area of the air inlet of the second adsorption channel is smaller than the longitudinal section area of the air outlet of the second adsorption channel, so that the adsorption pressure of the air inlet is larger than the adsorption pressure of the air outlet, the adsorption effect is improved, and when the inner arc of the first outer guide surface is arranged opposite to the inner arc surface of the first inner guide plate and the inner arc of the second outer guide surface is arranged opposite to the inner arc surface of the second inner guide plate, the longitudinal sections of the first adsorption channel and the second adsorption channel are ellipsoid-like bodies, so that the noise generated when the oil mist is collected can be reduced.
Example one
Referring to fig. 1-6, a suction system comprises an oil mist suction device 1 and a spin cell suction device 2; the spin cell suction apparatus 2 includes a first suction mechanism 21 and a plurality of spin cell suction nozzles 22; the spinning monomer suction nozzle 22 is communicated with the first suction mechanism 21 through a spinning monomer suction pipe; the spinning monomer suction nozzles 22 are all positioned in a spinning area formed by the oil nozzle assembly and the spinning manifold, the spinning monomer suction nozzles 22 are positioned on the same horizontal plane and are sequentially arranged, and the total length of the spinning monomer suction nozzles 22 is less than or equal to the length of the spinning area; the oil mist suction device 1 includes an oil mist suction nozzle 11 and a second suction mechanism 12; the oil mist suction nozzle 11 is communicated with the second suction mechanism 12 through an oil mist suction pipe; the oil mist suction nozzle 11 is embedded at one side of the pre-networking device 3, and the inner cavity of the oil mist suction nozzle 11 is horn-shaped. Specifically, the oil mist suction nozzle 11 includes a body 111 and a suction nozzle joint 112; the body 111 is communicated with the second suction mechanism 12 through a suction nozzle joint 112, the inner cavity of the body 111 is in a horn shape, and the suction nozzle joint 112 and the body 111 are integrally formed.
Referring to fig. 6, the spinning cell suction nozzle 22 has two symmetrically disposed guide slopes 221 therein.
Referring to fig. 6, the interval between the two guide slopes 221 is gradually reduced in the air intake direction.
Referring to fig. 6, a pressurizing member 222 for increasing adsorption pressure is provided on each guide slope 221; the pressurizing member 222 is disposed along the length direction of the guide slope 221.
Referring to fig. 6, the cross-section of the plenum 222 is arcuate.
Referring to fig. 1 to 4, the oil mist suction nozzle 11 is provided with a first outer flow guide surface 113, a second outer flow guide surface 114, a first inner flow guide plate 115, and a second inner flow guide plate 116 in the vertical direction; the first outer baffle surface 113 and the first inner baffle 115 are oppositely arranged and form a first adsorption channel 110; the second outer flow guide surface 114 is opposite to the second outer flow guide surface 114 and forms a second adsorption channel 120; the first inner guide plate 115 and the second inner guide plate 116 and two side walls of the oil mist suction nozzle 11 in the horizontal direction form a main adsorption passage 130, and the air outlet of the first adsorption passage 110 and the air outlet of the second adsorption passage 120 are respectively communicated with the main adsorption passage 130. Specifically, in order to increase the adsorption pressure, the main adsorption channel 130 is communicated with the suction nozzle joint 112, the diameter of the suction nozzle joint 112 is equal to the diameter of the air outlet of the main adsorption channel 130, the air outlet of the first adsorption channel 110 and the air outlet of the second adsorption channel 120 are respectively communicated with the side wall of the main adsorption channel 130, the first adsorption channel 110 and the second adsorption channel 120 generate adsorption pressure on the first adsorption channel 110 and the second adsorption channel 120 by means of the airflow flow of the main adsorption channel 130, so that the first adsorption channel 110 and the second adsorption channel 120 assist the main adsorption channel 130 in collecting the oil mist, and the adsorption effect is improved. According to actual requirements, two auxiliary adsorption passages having the same structure as the first adsorption passage 110 and the second adsorption passage 120 may be formed on both sides of the oil mist suction nozzle 11 in the horizontal direction, respectively, so as to enlarge the adsorption area.
Referring to fig. 1 to 4, longitudinal sections of the first outer baffle surface 113, the second outer baffle surface 114, the first inner baffle plate 115 and the second inner baffle plate 116 are arc-shaped, an inner arc of the first outer baffle surface 113 is opposite to an inner arc surface of the first inner baffle plate 115, and an inner arc of the second outer baffle surface 114 is opposite to an inner arc surface of the second inner baffle plate 116.
Referring to fig. 1 to 4, the longitudinal sectional area of the inlet of the first adsorption passage 110 is smaller than the longitudinal sectional area of the outlet of the first adsorption passage 110; the longitudinal cross-sectional area of the air inlet of the second adsorption passage 120 is smaller than the longitudinal cross-sectional area of the air outlet of the second adsorption passage 120.
Compared with the existing suction system, the suction system manufactured by the embodiment has the advantages that the suction force is more uniform, the efficiency is higher, the fiber evenness is more uniform, and the dyeing reject ratio is greatly reduced.
In summary, according to the suction system provided by the invention, the arc-shaped first inner guide plate, the arc-shaped second inner guide plate, the arc-shaped first outer guide surface and the arc-shaped second outer guide surface are arranged on the upper side and the lower side of the oil mist suction nozzle to form the two first guide channels and the two second guide channels, so that the adsorption capacity of the oil mist suction nozzle is greatly improved under the condition that the air pressure adsorbed by the second adsorption mechanism is not increased, and the rapid collection of the oil mist is realized; and through set up a plurality of spinning monomer suction nozzles in limited length, also can be under the condition that does not increase first adsorption device and adsorb the wind pressure, strengthened the adsorption efficiency to the spinning monomer greatly. According to the invention, by changing the structures of the spinning monomer suction nozzle and the oil mist suction nozzle, the adsorption force of the spinning monomer is increased, the oil mist collection capacity is improved, and the modes of reducing the oil mist and the spinning monomer are adopted, so that the quality of the fiber yarn is greatly improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A suction system is characterized by comprising an oil mist suction device and a spinning monomer suction device;
the spinning monomer suction device comprises a first suction mechanism and a plurality of spinning monomer suction nozzles;
the spinning single body suction nozzle is communicated with the first suction mechanism through a spinning single body suction pipe;
the spinning monomer suction nozzles are all positioned in a spinning area formed by the oil nozzle assembly and the spinning box body, the spinning monomer suction nozzles are positioned on the same horizontal plane and are sequentially arranged, and the total length of the spinning monomer suction nozzles is less than or equal to the length of the spinning area;
the oil mist suction equipment comprises an oil mist suction nozzle and a second suction mechanism;
the oil mist suction nozzle is communicated with the second suction mechanism through the oil mist suction pipe;
the oil mist suction nozzle is embedded in one side of the pre-networking device, and an inner cavity of the oil mist suction nozzle is horn-shaped.
2. The suction system as claimed in claim 1, wherein the spinning cell suction mouth has two symmetrically arranged guide ramps therein.
3. The suction system as claimed in claim 2, wherein the interval between the two guide slopes is gradually reduced in the air intake direction.
4. The suction system as claimed in claim 2, wherein each of the guide slopes is provided with a pressurizing member for increasing suction pressure;
the plenum is disposed along a length of the guide ramp.
5. The aspiration system of claim 4, wherein the plenum has an arcuate cross-section.
6. The suction system according to claim 1, wherein the oil mist suction nozzle is provided with a first outer flow guide surface, a second outer flow guide surface, a first inner flow guide plate and a second inner flow guide plate in a vertical direction;
the first outer diversion surface and the first inner diversion plate are arranged oppositely to form a first adsorption channel;
the second outer flow guide surface and the second outer flow guide surface are oppositely arranged and form a second adsorption channel;
the first inner guide plate, the second inner guide plate and two side walls of the oil mist suction nozzle in the horizontal direction form a main adsorption channel, and an air outlet of the first adsorption channel and an air outlet of the second adsorption channel are respectively communicated with the main adsorption channel.
7. The aspiration system of claim 6 wherein the longitudinal cross-sections of the first outer baffle, the second outer baffle, the first inner baffle, and the second inner baffle are each arcuate, and wherein the inner arc of the first outer baffle is disposed opposite the inner arc of the first inner baffle, and wherein the inner arc of the second outer baffle is disposed opposite the inner arc of the second inner baffle.
8. The suction system according to claim 6 or 7, wherein the longitudinal cross-sectional area of the air inlet of the first adsorption channel is smaller than the longitudinal cross-sectional area of the air outlet of the first adsorption channel;
and the longitudinal section area of the air inlet of the second adsorption channel is smaller than that of the air outlet of the second adsorption channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650925.7A CN114262948A (en) | 2021-12-30 | 2021-12-30 | Suction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650925.7A CN114262948A (en) | 2021-12-30 | 2021-12-30 | Suction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114262948A true CN114262948A (en) | 2022-04-01 |
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ID=80831768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111650925.7A Pending CN114262948A (en) | 2021-12-30 | 2021-12-30 | Suction system |
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| Country | Link |
|---|---|
| CN (1) | CN114262948A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292063A (en) * | 2005-08-23 | 2008-10-22 | 连津格股份公司 | Multiple spinning nozzle arrangement and method for suctioning and blowing |
| CN201381384Y (en) * | 2009-03-23 | 2010-01-13 | 浙江三马锦纶科技股份有限公司 | Monomer suction device |
| CN202247050U (en) * | 2011-09-01 | 2012-05-30 | 长乐力源锦纶实业有限公司 | Winding system for nylon |
| JP2012127008A (en) * | 2010-12-13 | 2012-07-05 | Kurita Water Ind Ltd | Method and device for manufacturing nanofiber nonwoven fabric |
| CN203462191U (en) * | 2013-08-01 | 2014-03-05 | 长乐恒申合纤科技有限公司 | Novel monomer suction hood |
| CN109868511A (en) * | 2017-12-01 | 2019-06-11 | 日本Tmt机械株式会社 | Melt spinning device |
-
2021
- 2021-12-30 CN CN202111650925.7A patent/CN114262948A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292063A (en) * | 2005-08-23 | 2008-10-22 | 连津格股份公司 | Multiple spinning nozzle arrangement and method for suctioning and blowing |
| CN201381384Y (en) * | 2009-03-23 | 2010-01-13 | 浙江三马锦纶科技股份有限公司 | Monomer suction device |
| JP2012127008A (en) * | 2010-12-13 | 2012-07-05 | Kurita Water Ind Ltd | Method and device for manufacturing nanofiber nonwoven fabric |
| CN202247050U (en) * | 2011-09-01 | 2012-05-30 | 长乐力源锦纶实业有限公司 | Winding system for nylon |
| CN203462191U (en) * | 2013-08-01 | 2014-03-05 | 长乐恒申合纤科技有限公司 | Novel monomer suction hood |
| CN109868511A (en) * | 2017-12-01 | 2019-06-11 | 日本Tmt机械株式会社 | Melt spinning device |
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Application publication date: 20220401 |
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