KR20170017376A - method and device of manufacturing meta-aramid fiber for reduced shrinkage - Google Patents
method and device of manufacturing meta-aramid fiber for reduced shrinkage Download PDFInfo
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- KR20170017376A KR20170017376A KR1020150111196A KR20150111196A KR20170017376A KR 20170017376 A KR20170017376 A KR 20170017376A KR 1020150111196 A KR1020150111196 A KR 1020150111196A KR 20150111196 A KR20150111196 A KR 20150111196A KR 20170017376 A KR20170017376 A KR 20170017376A
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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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
- D01F6/805—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides from aromatic copolyamides
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
- A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D29/00—Uniforms; Parts or accessories of uniforms
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- A41D31/0011—
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
- A62B17/003—Fire-resistant or fire-fighters' clothes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2600/00—Uses of garments specially adapted for specific purposes
- A41D2600/10—Uses of garments specially adapted for specific purposes for sport activities
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2600/00—Uses of garments specially adapted for specific purposes
- A41D2600/20—Uses of garments specially adapted for specific purposes for working activities
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/04—Heat-responsive characteristics
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
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- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Toxicology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Emergency Management (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Physical Education & Sports Medicine (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
Abstract
A method for producing meta-aramid fibers through which a meta-aramid fiber is radiated and passed through a hot-rolling roller, a heat-fixing roller and a guide roller, the method comprising: a drawing step in which the meta-aramid fiber passes through the hot- Fixing the elongated meta-aramid fiber through the heat fixing roller; And a storage step in which the heat-fixed fibers pass through the guide roller, wherein the speed of the heat fixing roller is lower than the speed of the hot rolling roller, or the speed of the guide roller is lower than the speed of the heat fixing roller Or the speed of the hot rolled roller, the speed of the heat fixing roller, and the speed of the guide roller are sequentially decreased. The present invention also relates to a method for producing a reduced shrinkage ratio meta-aramid fiber.
Description
The present invention relates to a method and apparatus for producing meta-aramid fibers, and more particularly to a method and apparatus for producing meta-aramid fibers with reduced shrinkage.
Aromatic polyamides, developed in the 1960s, were developed to improve the heat resistance of nylon, an aliphatic polyamide. Aromatic polyamides, well known for their trade names such as Nomex and Kevlar, And has excellent heat resistance and high tensile strength which can be used for fibers such as cord.
A typical aliphatic polyamide is a synthetic resin having an aliphatic hydrocarbon bonded between amide groups, and an aramid is a synthetic resin having an amide bond having 85% of benzene groups bonded to two aromatic rings between amide groups. The aliphatic hydrocarbon of the aliphatic polyamide easily undergoes molecular motion when heat is applied, whereas the benzene ring of the aromatic polyamide is stable to heat and has a high elastic modulus because the molecular chain is rigid and the molecules do not easily move even when heat is applied. Exhibit many differences in characteristics.
A typical aramid exhibits high mechanical properties such as high strength and high tensile elastic modulus when elongated. Korean Patent Laid-Open Publication No. 2015-0017749 discloses a para-type wholly aromatic copolyamide stretched fiber and a method for producing the same, and specifically discloses a method for stretching an aramid fiber.
In particular, the meta-aramid is represented by Nomex developed by DuPont and Conex developed by Dejin. The meta-based aramid has a merit that the strength and elongation of the benzene ring are combined with the amide group at the meta-position, similar to ordinary nylon, but very good in heat stability, and light and sweat-absorbing compared to other heat-resistant materials. It is used as heat-resistant clothing materials such as fire fighting uniforms, uniforms for racing motorists, astronaut uniforms, and work clothes, and is used for high-temperature filters in industrial applications.
However, since the meta-aramid has a shrinkage ratio of about 5% which is basically possessed after the production, it causes width shrinkage in the post-processing such as non-woven fabric production, spinning and dyeing, and causes unevenness. Therefore, various methods are proposed to solve this problem.
For example, Korean Patent Registration No. 0462924 relates to a low shrinkage polyamide fiber for uncoated airbags and a method for producing the same, and more particularly, to a method for manufacturing a low shrinkage polyamide fiber for a nonwoven airbag, which comprises melting a polyhexamethylene adipamide chip having a relative viscosity of 2.5 or more, A step of extruding and cooling and solidifying the yarn by use of a cooling gas under a spinneret, and a step of winding the yarn at a total m / e ratio of 4.0 or more and performing multi-stage stretching, heat treatment and relaxation, . However, the thermal contraction ratio (160 DEG C, 30 minutes) of the above method is about 3 to 6%, and the physical properties of the meta-aramid are not considered.
SUMMARY OF THE INVENTION The present invention has been made to overcome the problems of the prior art as described above, and it is an object of the present invention to provide a method and an apparatus for producing a meta-aramid fiber having a reduced shrinkage ratio capable of controlling heat shrinkage.
It is another object of the present invention to provide a method and an apparatus for producing meta-aramid fibers having a reduced shrinkage factor, which is stable even when heat is applied, when used as fire-resistant clothing, uniforms for racing motorists, uniforms for astronauts, There is a purpose.
It is another object of the present invention to provide a method and apparatus for producing meta-aramid fibers with reduced shrinkage which can prevent width shrinkage in a post-processing process such as non-woven fabric production, spinning, dyeing and the like.
A method for producing meta-aramid fibers through which a meta-aramid fiber is radiated and passed through a hot-rolling roller, a heat-fixing roller and a guide roller, the method comprising: a drawing step in which the meta-aramid fiber passes through the hot- Fixing the elongated meta-aramid fiber through the heat fixing roller; And a storage step in which the heat-fixed fibers pass through the guide roller, wherein the speed of the heat fixing roller is lower than the speed of the hot rolling roller, or the speed of the guide roller is lower than the speed of the heat fixing roller Or the speed of the hot rolled roller, the speed of the heat fixing roller, and the speed of the guide roller are sequentially decreased. The present invention also relates to a method for producing a reduced shrinkage ratio meta-aramid fiber.
The present invention also relates to a method for producing a meta-aramid fiber with reduced shrinkage, wherein a rate of reduction (%) of the heat-setting roller relative to the hot-rolled roller is 0.5 to 0.8%.
In addition, the present invention relates to a method for producing a reduced-shrinkage meta-aramid fiber, wherein a rate of reduction (%) of the guide roller relative to the heat fixing roller is 0.5 to 0.8%.
The present invention relates to an apparatus for producing a meta-aramid fiber including a hot-rolling roller, a heat-fixing roller, and a guide roller onto which meta-aramid fibers are radiated, wherein the speed of the heat-fixing roller is lower than the speed of the hot- Wherein the speed of the guide roller is lower than the speed of the heat fixing roller or the speed of the hot rolling roller, the speed of the heat fixing roller, and the speed of the guide roller are sequentially decreased. ≪ / RTI >
In addition, the rate of decrease (%) of the heat fixing roller relative to the hot rolled roller is 0.5 to 0.8%. The present invention also relates to an apparatus for producing a meta-aramid fiber with reduced shrinkage.
The present invention also relates to an apparatus for producing a meta-aramid fiber with reduced shrinkage, characterized in that the speed reduction rate (%) of the guide roller relative to the heat fixing roller is 0.5 to 0.8%.
Also, the guide roller is a capstock roller in the form of a vertical wound core with a narrow central portion. The present invention relates to an apparatus for producing a meta-aramid fiber with reduced shrinkage.
The present invention relates to a meta-aramid fiber with reduced shrinkage, which is produced by the above production method and apparatus and has a heat shrinkage of 0.1 to 3%.
The method and apparatus for producing meta-aramid fibers with reduced shrinkage as described above have the effect of controlling the heat shrinkage ratio.
Also, there is an effect of preventing the width contraction in the post-processing such as non-woven fabric production, spinning and dyeing.
In addition, when used as heat-resistant clothes such as fire-fighting uniforms, uniforms for racing motorists, astronaut uniforms, work clothes, etc., there is an effect of having stable values even when heat is applied.
Figure 1 is a process flow diagram of a process for producing meta-aramid fibers with reduced shrinkage according to the present invention
FIG. 2 is a schematic view of an apparatus for producing meta-aramid fibers with reduced shrinkage according to the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.
As used herein, the terms " about, " " substantially, " " etc. ", when used to refer to a manufacturing or material tolerance inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.
FIG. 1 is a process diagram of a method for producing a meta-aramid fiber with reduced shrinkage according to the present invention. FIG. 2 is a schematic view of an apparatus for producing a meta-aramid fiber with reduced shrinkage according to the present invention, A fixing step in which the stretched meta-aramid fiber passes through the heat fixing roller, and a storage step in which the heat fixing fiber passes through the guide roller.
The present invention relates to a manufacturing method for radiating meta-aramid fibers and preventing heat shrinkage through a hot-rolling roller, a heat-fixing roller, and a guide roller, wherein the meta- aramid fiber is stretched A fixing step in which the stretched meta-aramid fiber passes through the heat fixing roller, and a storing step in which the heat fixing fiber passes through the guide roller.
The present invention also relates to a manufacturing apparatus for preventing heat shrinkage of a meta-aramid. As shown in FIG. 2, the apparatus includes a
As shown in FIG. 2, the radiated meta-aramid fibers pass through the hot-
The meta-aramid resin is polymerized with M-phenylene diamine (MPD) and isophthaloyl chloride (IPC).
In the spinning step, the polymerized meta-aramid is dissolved in a solvent and mixed, followed by wet spinning.
The stretching step is a step of stretching the meta-aramid fibers spun into the coagulating liquid, and is preferably stretched through one or more heat rollers.
In the stretching step, the stretching ratio is preferably 1.5 to 15 times, but is not particularly limited to this range. Such a stretching step aims at improving the physical properties through the orientation of the molecules by making the molecular structure more dense by thermally applying and stretching the fibers.
Further, the stretching step may be divided into multiple steps as required.
In the fixing step, the fibers are over fed while the heat fixing roller has a reduced speed as compared with the hot rolling roller, and the primary auger shaft advances. At this time, the potential tension imparted to the fibers in the drawing step can be reduced, and thermal shrinkage can be reduced in the post-processing.
The fixing step passes through one or more heat fixing rollers, and the rate of reduction (%) of the heat fixing roller relative to the last hot rolled roller is 0.5 to 0.8%.
The rate of reduction (%) of the heat fixing roller relative to the hot rolled roller is given by the following equation.
(M / min) of the hot rolled roller: A, and the speed (m / min) of the heat fixing roller: B)
If the reduction rate of the hot rolling roller to the heat fixing roller is less than 0.5%, it is preferable to have a reduction rate of 0.5% or more because it is difficult to see the reduction effect of the shrinkage ratio.
Further, if the rate of decrease of the hot rolling roller speed relative to the heat fixing roller has a reduction rate greater than 0.8%, it is desirable to have a reduction rate of 0.8% or less because the fiber is struck between the rollers and the work becomes difficult.
It should be noted, however, that if the heat fixing roller has a higher speed than the hot-rolled roller, the fiber is stretched again due to the tension, or the filament phenomenon occurs and the shrinkage reduction effect is difficult to see.
Generally, in the fiber production method, the fiber is stabilized through heat treatment, but the fixing step of the present invention can control the speed of the roller to more effectively impart shape stability and reduce heat shrinkage.
The heat fixing roller has a temperature of about 250 to 500 DEG C, and preferably has a temperature of about 350 to 400 DEG C. [
The storing step is a step in which heat-fixed fibers pass through the guide roller and are stored in the can. At this time, the speed of the guide roller is reduced compared to the last heat fixing roller, and the secondary athletic axis proceeds.
At this time, it is preferable that the speed reduction rate (%) of the guide roller relative to the heat fixing roller is 0.5 to 0.8%.
(%) Of the heat fixing roller to guide roller is the same as the following expression.
(M / min) of the heat fixing roller: B, speed (m / min) of the heat fixing roller: C)
If the speed reduction ratio of the guide roller relative to the heat fixing roller has a number smaller than 0.5% as in the above-described reason, the reduction effect of the shrinkage rate is difficult to see. If the ratio is greater than 0.8% It is preferable to have a reduction rate of 0.5 to 0.8%.
Preferably, the guide roller is used as a capstan roller having a vertically wound core having a thin central portion and a moving mechanical portion.
The present invention is based on the idea that the primary athletic axis or the secondary athletic axis may proceed or the primary and secondary athletic axis may proceed together and that the two athletic axis processes (first and second athletes Axis) has a more effective shrinkage reduction effect.
The heat shrinkage of the conventional meta-aramid fiber is about 5%, but the meta-aramid fiber produced by the above method has a heat shrinkage of 0.1 to 3%.
The present invention relates to an apparatus for controlling the speed of a roller to reduce the shrinkage ratio of the meta-aramid, wherein the speed of the roller can be controlled by a control unit.
The control unit controls the speed of the heat fixing roller so that the speed reduction rate of the heat fixing roller relative to the hot rolling roller is 0.5 to 0.8%.
In addition, the speed of the guide roller is controlled so that the speed reduction rate (%) of the guide roller relative to the heat fixing roller is 0.5 to 0.8%.
As described above, when the speed reduction rate of the heat fixing roller and the speed reduction rate (%) of the guide roller relative to the heat fixing roller fall to 0.5 or less as compared with the hot rolling roller, the shrinkage reduction effect is difficult to see. If it goes up to 0.8 or more, fiber wobbling occurs. Therefore, it is very important to control the speed of each roller, and the control unit plays a role in the present invention.
Further, if the heat fixing roller has a higher speed than that of the hot rolling roller, the fibers are again subjected to tension and elongation or filing occurs. Therefore, the control unit assists in preventing stretching or trimming by the heat fixing roller.
Hereinafter, embodiments of the method for producing a meta-aramid fiber with reduced shrinkage ratio according to the present invention will be described, but the present invention is not limited thereto.
Example One
1, a meta aramid fiber is melt-spun in a coagulating solution, a meta- aramid fiber is passed through the hot-stretching roller, a stretched meta-aramid fiber is wound on the heat- And a storage step through which the heat-set fibers pass through the guide rollers.
In this stretching step, the radiated meta-aramid fibers are passed through the
At this time, the speed of the hot rolling roller was 15 m / min and the speed of the heat fixing roller was 14.91 m / min. The heat-set fibers are fed into a capstan roller at a speed of 14.91 m / min serving as a
Example 2
The meta-aramid fibers were spinnable, stretched, fixed, and stored under the same conditions as those of the above-described example, as in the method of Fig.
At this time, the hot rolling roller in the drawing step had a speed of 15 m / min, and the heat fixing roller was heated at a speed of 15.00 m / min.
The heat-set fibers were advanced and stored by a capstan roller having a speed of 14.90 m / min.
Example 3
The meta-aramid fibers were spinnable, stretched, fixed, and stored under the same conditions as those of the above-described example, as in the method of Fig.
At this time, the hot rolling roller of the drawing step had a speed of 15 m / min, and the speed of the heat fixing roller was 14.90 m / min, and then the first bow axis was run before the heat fixing.
In addition, the heat-set fibers were advanced and stored by a capstan roller having a speed of 14.83 m / min.
Comparative Example
The meta-aramid fibers were spinnable, stretched, fixed, and stored under the same conditions as those of the above-described example, as in the method of Fig.
At this time, the hot rolling roller in the drawing step had a speed of 15 m / min, the speed of the heat fixing roller was fixed at 15.00 m / min and stored by a guide roller having a speed of 15.00 m / min.
* How to measure physical properties
1) Measurement method of elongation (%)
The strain-stress curves under the conditions of elongation rate of 100% / min were measured for elongation (%) from the stress at elongation at break and the elongation under the condition of ambient temperature 20 ° C and relative humidity 65%
2) Strength (g / den) Measurement method
Strength = Strength at breaking extension ÷ Yarn denier
3) Heat shrinkage (%) measurement method
Heat shrinkage was measured by cutting the fibers to 25 mm under a load of 50 mg / de and heat-treating them at 270 ° C for 30 minutes and measuring the length of the heat-treated fibers under a load of 20 mg.
The heat shrinkage percentage (%) is given by the following equation.
(Sample length under the load of 50 mg / De: Lo, sample length under 20 mg / De load after heat treatment at 270 占 폚 for 30 minutes)
Table 1 shows the production conditions and thermal contraction ratios of the speed and temperature of the rollers of Examples 1 to 3 and Comparative Examples, and Table 2 shows the properties of the fibers after the production.
In Comparative Example 1, the rate of reduction (%) of the heat-retaining roller relative to the hot-rolled roller was 0, and the shrinkage rate was 4.56% due to the absence of the bow axis. The average heat shrinkage of Examples 1 to 3 And 2.53%, respectively.
In Example 1, a heat shrinkage rate of 2.95% was exhibited by the primary shank shaft with the hot rolling roller, and the heat shrinkage rate was 2.88% by the secondary shank shaft with the guide roller in Example 3, The shrinkage reduction effect is similar.
In the second embodiment, the secondary auger axis between the hot rolling roller and the heat fixing roller is the primary, the secondary auger axis is between the heat fixing roller and the guide roller and the heat shrinkage is 1.75%. When the primary and secondary ath It can be confirmed that the shrinkage reduction effect is most excellent.
It can be confirmed that even if the primary forehead axis by the heat fixing roller or the secondary forehead axis by the guide roller or the primary and secondary aberration axes are moved together, the physical properties of fineness, strength and elongation are not affected.
DESCRIPTION OF THE RELATED ART [0002]
Hot rolling chamber containing stretching roller: 100 heat fixing rollers: 200
Guide rollers: 300 cans (can): 310
Control section: 400
Claims (8)
A drawing step of passing the meta-aramid fiber through the hot-smoothing roller;
Fixing the elongated meta-aramid fiber through the heat fixing roller; And
A storage step in which heat-fixed fibers pass through the guide rollers,
The speed of the heat fixing roller is lower than the speed of the hot rolling roller or the speed of the guide roller is lower than the speed of the heat fixing roller or the speed of the hot rolling roller, Wherein the rate of decrease of the shrinkage rate of the meta-aramid fibers is decreased sequentially.
Wherein a rate of reduction (%) of the heat fixing roller relative to the hot rolled roller is 0.5 to 0.8%.
Wherein the rate of reduction (%) of the guide roller relative to the heat fixing roller is 0.5 to 0.8%.
The speed of the heat fixing roller is lower than the speed of the hot rolling roller or the speed of the guide roller is lower than the speed of the heat fixing roller or the speed of the hot rolling roller, Wherein the rate of decrease of the shrinkage rate of the meta-aramid fibers is decreased sequentially.
Wherein a rate of reduction (%) of the heat fixing roller relative to the hot rolled roller is 0.5 to 0.8%.
Wherein a rate of reduction (%) of the guide roller relative to the heat fixing roller is 0.5 to 0.8%.
Wherein the guide roller is a capstock roller in the form of a vertical wound core having a narrowed central portion.
Wherein the heat shrinkage ratio is 0.1 to 3%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190000541A (en) * | 2017-06-23 | 2019-01-03 | 주식회사 휴비스 | Meta-aramid fiber having low thermal shrinkage and Manufacturing method thereof |
| WO2019125085A1 (en) | 2017-12-21 | 2019-06-27 | 주식회사 엘지화학 | Flexible secondary battery comprising bipolar electrode |
| CN110241494A (en) * | 2019-07-02 | 2019-09-17 | 鲁普耐特集团有限公司 | A kind of continuous identical tension heat setting device of fibrecord and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247086A (en) * | 2006-03-15 | 2007-09-27 | Teijin Techno Products Ltd | Meta type aramid fiber having low shrinkage |
| KR101044732B1 (en) * | 2009-01-30 | 2011-06-28 | 웅진케미칼 주식회사 | nonwoven staple fiber and manufacture method thereof |
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2015
- 2015-08-06 KR KR1020150111196A patent/KR101744257B1/en active IP Right Grant
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190000541A (en) * | 2017-06-23 | 2019-01-03 | 주식회사 휴비스 | Meta-aramid fiber having low thermal shrinkage and Manufacturing method thereof |
| WO2019125085A1 (en) | 2017-12-21 | 2019-06-27 | 주식회사 엘지화학 | Flexible secondary battery comprising bipolar electrode |
| CN110241494A (en) * | 2019-07-02 | 2019-09-17 | 鲁普耐特集团有限公司 | A kind of continuous identical tension heat setting device of fibrecord and method |
| CN110241494B (en) * | 2019-07-02 | 2023-08-08 | 鲁普耐特集团有限公司 | Fiber rope continuous constant Zhang Lire shaping device and method |
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