CN110938904B - Production method of regenerated crimped yarn - Google Patents
Production method of regenerated crimped yarn Download PDFInfo
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- CN110938904B CN110938904B CN201911140576.7A CN201911140576A CN110938904B CN 110938904 B CN110938904 B CN 110938904B CN 201911140576 A CN201911140576 A CN 201911140576A CN 110938904 B CN110938904 B CN 110938904B
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
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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
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
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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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
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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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/225—Mechanical characteristics of stretching apparatus
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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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses a production method of regenerated crimped yarn, which comprises the following steps: (1) putting the regenerated semi-dull polyester chips into a crystallization drying system for crystallization drying treatment; (2) the dried regenerated semi-dull polyester chips are melted and extruded by a screw extruder and are metered into a spinning manifold with a spinning assembly to form continuous lines, and then the continuous lines are cooled by cross air blow and are clustered and oiled to obtain tows; (3) and (3) pre-meshing, drafting and shaping, main meshing and winding forming are carried out on the bunched and oiled filament bundle through a drafting and winding device, and then the regenerated crimped filament is obtained. The invention realizes the industrial production of the regenerated crimped yarn with high strength, low boiling water shrinkage and high crimping performance by changing the hot roller drafting mode, changing the spinneret plate type and adjusting the process parameters, and meets the market demand.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a production method of regenerated crimped yarn.
Background
With the continuous improvement of living standard of people, clothes, articles or ornaments with high quality, diversity and individuation characteristics become the targets pursued by people, so new requirements on the appearance, function and performance of textiles and textile fabrics are provided. Crimped yarn is a fiber which is realized by modifying chemical fiber and has the characteristics of natural fur, and is increasingly popular. In recent years, various attempts have been made to obtain crimped yarn having excellent physical properties and crimping effect, but research has been focused on ordinary crimped yarn, and little or no research has been conducted on regenerated crimped yarn.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a production method of regenerated crimped yarn, which realizes the industrial production of the regenerated crimped yarn with high strength, low boiling water shrinkage and high crimping performance by changing a hot roller drafting mode, changing a spinneret plate type and adjusting process parameters, and meets the market demand.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of producing regenerated crimped yarn, comprising the steps of:
(1) putting the regenerated semi-dull polyester chips into a crystallization drying system for crystallization drying treatment;
(2) the dried regenerated semi-dull polyester chips are melted and extruded by a screw extruder and are metered into a spinning manifold with a spinning assembly to form continuous lines, and then the continuous lines are cooled by cross air blow and are clustered and oiled to obtain tows;
(3) pre-meshing, drafting and shaping, main meshing and winding forming are carried out on the bunched and oiled filament bundle through a drafting and winding device, and then the regenerated crimped filament is obtained; the drafting and winding device comprises a spinning channel, a pre-screening device fixedly arranged below the spinning channel and used for pre-screening treatment, a second drafting hot roller and a second yarn dividing roller which are arranged on the same side of the pre-screening device and used for drafting shaping, and a main screening device arranged below the second yarn dividing roller, wherein a plurality of yarn guide ceramic pieces used for feeding pre-screened yarns into the second yarn dividing roller are arranged obliquely above one side of the second yarn dividing roller, and a plurality of yarn guides used for longitudinally feeding the drafting-shaped yarns into the main screening device are arranged below the other side of the second yarn dividing roller.
In the step (2), the spinning assembly comprises a spinneret plate, a plurality of discharge holes are formed in the spinneret plate, each discharge hole comprises four C-shaped slotted holes, and the four C-shaped slotted holes are enclosed into a transverse 8 shape.
The pre-network device is arranged at a position 10cm below the spinning channel.
And the guide wire porcelain pieces are arranged in a row, and the arrangement direction of the guide wire porcelain pieces is parallel to the axial direction of the second wire dividing roller.
A plurality of the silk guide is arranged in a row, the arrangement direction of the silk guides is parallel to the axial direction of the second silk dividing roller, and the silk guides are longitudinally opposite to the main network device.
In the step (1), the crystallization temperature is 150 ℃, the drying temperature is 150 ℃, and the drying time is 10 h.
In the step (2), the temperatures of the first zone to the sixth zone are 286 ℃, 290 ℃, 293 ℃, 295 ℃ and 295 ℃ respectively during melt extrusion of the screw extruder, the extrusion pressure is 15MPa, and the pressure after filtration is 10 MPa.
In the step (2), the temperature of a spinning box is 295 ℃, and the pressure of a spinning assembly is 20 MPa; the side blowing cooling wind pressure is 600Pa, and the side blowing cooling wind speed is 0.75 m/s; the oil nozzle for cluster oiling is a flat oil nozzle, the aperture of the oil nozzle is 0.5mm, the oiling height is 800mm, and the concentration ratio of the adopted oil agent is 18%.
In the step (3), the speed of the second drafting hot roller is 5000m/min, the temperature is 60 ℃, the speed of the second dividing roller is 4970m/min, and the temperature is 50 ℃ during drafting and shaping; the winding speed in the winding molding was 5000 m/min.
In the step (3), the pre-network pressure is 0.25MPa, and the main network pressure is 0.25 MPa.
The invention has the beneficial effects that:
(1) the hot roller drafting mode is changed, the common FDY production equipment is improved, the pre-interlacer is increased to a position 10cm below a spinning channel, the insulation can of a second drafting hot roller is disassembled, a yarn guide porcelain piece for feeding pre-interlaced tows into a second yarn dividing roller and a yarn guide for longitudinally feeding drafted and shaped tows into a main interlacer are additionally arranged, the tows do not need to pass through a first drafting hot roller and a first yarn dividing roller of the original common FDY production equipment, the evenness and the elongation of curled tows are improved, the purpose of achieving the curling effect under high-speed drafting is achieved, the equipment is simple in improved structure, and the improvement cost is low.
(2) The plate shape of the spinneret plate is changed, each discharge hole of the spinneret plate is formed by two groups of C-shaped slotted holes, each group of C-shaped slotted holes comprises two C-shaped slotted holes which are enclosed into a circle in a mirror symmetry mode, and tows can be bonded together after passing through the discharge holes to form two hollow structures, so that the torque of the tows is effectively increased, the crimping degree of fibers is improved, and the crimping effect is achieved;
(3) the stable production of the crimped yarn is ensured by adjusting the technological parameters, and the physical properties and crimping effect of the crimped yarn are ensured.
Drawings
FIG. 1 is a schematic view of a partial structure distribution of a drafting and winding device of a common FDY production equipment;
FIG. 2 is a schematic perspective view of a portion of the draft winding assembly of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
fig. 4 is a cross-sectional view of the discharge opening of the spinneret plate of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
a method of producing regenerated crimped yarn, comprising the steps of:
(1) putting the regenerated semi-dull polyester chips into a crystallization drying system for crystallization drying treatment;
(2) the dried regenerated semi-dull polyester chips are melted and extruded by a screw extruder and are sent into a spinning box body with a spinning assembly to form continuous lines, and then the continuous lines are cooled by cross air blow and are clustered and oiled to obtain tows;
(3) pre-meshing, drafting and shaping, main meshing and winding forming are carried out on the bunched and oiled filament bundle through a drafting and winding device, and then the regenerated crimped filament is obtained; the drafting and winding device comprises a spinning channel 1, a pre-screening device 2 fixedly arranged below the spinning channel 1 and used for pre-screening treatment, a second drafting hot roller 3 and a second yarn dividing roller 4 which are arranged on the same side of the pre-screening device 2 and used for drafting shaping, and a main screening device 7 arranged below the second yarn dividing roller 4, wherein a plurality of yarn guide porcelain pieces 5 used for feeding pre-screened yarns into the second yarn dividing roller 4 are arranged obliquely above one side of the second yarn dividing roller 4, and a plurality of yarn guides 6 used for longitudinally feeding the drafting-shaped yarns into the main screening device 7 are arranged below the other side of the second yarn dividing roller 4.
In the step (2), the spinning assembly comprises a spinneret plate, a plurality of discharge holes 8 are formed in the spinneret plate, each discharge hole 8 comprises four C-shaped slotted holes 81, and the four C-shaped slotted holes 81 are enclosed to form a transverse 8 shape.
The pre-network device 2 is arranged 10cm below the spinning channel 1.
A plurality of the guide wire porcelain pieces 5 are arranged in a row, and the arrangement direction of the guide wire porcelain pieces 5 is parallel to the axial direction of the second wire distributing roller 4.
A plurality of the silk guide 6 is arranged in a row, the arrangement direction of the silk guide 6 is parallel to the axial direction of the second silk dividing roller 4, and the silk guide 6 is longitudinally opposite to the main network device 7.
In the step (1), the crystallization temperature is 150 ℃, the drying temperature is 150 ℃, and the drying time is 10 h.
In the step (2), the temperatures of the first zone to the sixth zone are 286 ℃, 290 ℃, 293 ℃, 295 ℃ and 295 ℃ respectively during melt extrusion of the screw extruder, the extrusion pressure is 15MPa, and the pressure after filtration is 10 MPa.
In the step (2), the temperature of a spinning box is 295 ℃, and the pressure of a spinning assembly is 20 MPa; the side blowing cooling wind pressure is 600Pa, and the side blowing cooling wind speed is 0.75 m/s; the oil nozzle for cluster oiling is a flat oil nozzle, the aperture of the oil nozzle is 0.5mm, the oiling height is 800mm, and the concentration ratio of the adopted oil agent is 18%.
In the step (3), the speed of the second drafting hot roller 3 is 5000m/min, the temperature is 60 ℃, the speed of the second dividing roller 4 is 4970m/min, and the temperature is 50 ℃ during drafting and shaping; the winding speed in the winding molding was 5000 m/min.
In the step (3), the pre-network pressure is 0.25MPa, and the main network pressure is 0.25 MPa.
The invention realizes the purpose of achieving the curling effect by changing the spinneret plate type, the hot roller drafting mode and the technological parameter adjusting mode.
As shown in fig. 4, each discharge hole 8 of the spinneret plate is surrounded by four C-shaped slot holes 81 to form a horizontal 8 shape, and through the improvement of the plate shape of the spinneret plate, tows can be bonded together and form two hollow structures after passing through the discharge hole 8, so that the torque of the tows is effectively increased, the crimping degree of fibers is improved, and the crimping effect is achieved.
The traditional crimped yarn production equipment is relatively complex, the energy consumption is high, the invention is improved on the basis of common FDY production equipment, so that the tows are not subjected to pre-network treatment and then pass through the first drafting hot roller 5 'and the first dividing roller 6' of the common FDY production equipment, but are directly subjected to high-speed drafting shaping by adopting the second drafting hot roller 3 and the second dividing roller 4 shown in figure 2 so as to achieve the crimping effect. As shown in fig. 1, the drafting and winding device of the common FDY production equipment comprises a spinning channel 1', a pre-network device 2', a first drafting hot roller 5', a first yarn dividing roller 6', a second drafting hot roller 3', a second yarn dividing roller 4', a main network device 7', an insulation box 8' of the second drafting hot roller, a large distance between the spinning channel 1 'and the pre-network device 2', a path of the filament bundle is shown by a solid line arrow in fig. 1 during production, a rotation direction of the first drafting hot roller 5', the first yarn dividing roller 6', the second drafting hot roller 3', the second yarn dividing roller 4' is shown by a dotted line arrow in fig. 1, the filament bundle is drafted and shaped after passing through the pre-network device 2 'from the spinning channel 1', the first drafting roller 5', the first drafting hot roller 6', the first drafting hot roller 5', the second drafting hot roller 3', the second drafting hot roller 4', the second drafting hot roller 3', and then main network processing is carried out by a main network device 7', and the hot roller drafting mode is only suitable for producing common FDY and is not suitable for producing crimped filaments. As shown in fig. 2 to 3, the improvement of the conventional FDY production apparatus according to the present invention includes the following points: (1) the arrangement position of the original pre-interlacer 2 'is increased to a position 10cm below the spinning channel 1', so that the problem of yarn bundle shaking caused by the drafting mode is solved, and the spinning-in operation is facilitated; (2) the insulation box of a second drafting hot roller 3' in the original equipment is disassembled, and a yarn guide porcelain piece 5 which enables pre-networked tows to be fed into a second yarn dividing roller 4 and a yarn guide 6 which enables the drafted and shaped tows to be longitudinally fed into a main network device 7 are additionally arranged; the yarn guide ceramic piece 5 is arranged at the position 5cm above one side of the second yarn dividing roller 4 in an inclined mode, so that the yarn bundle is fed into the second yarn dividing roller 4 and the second yarn dividing roller 4 to ensure the drafting tension of the yarn bundle, and the yarn evenness of crimped yarns is improved; the yarn guide 6 is arranged at the position 20cm below the other side of the second yarn dividing roller 4, so that the yarn bundle can be longitudinally fed into the main network device 7, and the improvement of the elongation and the network degree of the crimped yarn is facilitated. Based on the improvement, the winding route of the filament bundle is changed, the specific route of the filament bundle is shown as a solid arrow in fig. 2, the rotating directions of the second drafting hot roller 3 and the second dividing roller 4 are shown as a dotted arrow in fig. 2 (the rotating direction of the second dividing roller 4 in the invention is opposite to that of the second dividing roller 4' in the common FDY production equipment), the filament bundle is fed into the second dividing roller 4 through the filament guide porcelain 5 after going out of the spinning channel 1, is pre-networked by the pre-networking device 2, is fed into the second drafting hot roller 3 through the second dividing roller 4, and then enters the main networking device 7 through the filament guide 6 for network processing.
In addition, the invention also adjusts the technological parameters to meet the production requirements of the crimped yarn. The main functions of the process parameter adjustment are as follows: 1. the crystallization temperature is controlled to be beneficial to reducing the occurrence of broken filaments; 2. the control of the drying temperature and the drying time is favorable for ensuring that the required viscosity is reached when the regenerated extinction slice is melted, and the subsequent spinning is ensured; 3. by adjusting the technological parameters of bundling and oiling, the strand oiling is more uniform, and the quality of products is favorably improved; 4. by controlling the drafting and curling process parameters, the stable production of the curled yarn is realized, the boiling water shrinkage rate is reduced, and the curling degree and the curling uniformity are improved.
Table 1 shows statistics of physical property data of the regenerated crimped yarn obtained by the method of the present invention, wherein the intrinsic viscosity of the regenerated semi-dull section is 0.65dl/g, the terminal carboxyl group content is less than or equal to 25mol/t, and the mass molecule of diethylene glycol is less than or equal to 1.2%. As can be seen from table 1, the obtained regenerated crimped yarn meets the performance index requirements of crimped yarn, wherein the yarn evenness reaches 2.0 CV% (the yarn evenness of the crimped yarn produced in the conventional manner is generally greater than 2.2%), the elongation reaches 4.6% (the elongation of the crimped yarn produced in the conventional manner is generally greater than 6%), the boiling water shrinkage reaches 3.6%, the dyeing grade reaches 4, the crimpness reaches 1.83%, and the crimp stability is 22.21%.
TABLE 1 physical Properties statistics of regenerated crimped filaments
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for producing regenerated crimped yarn, characterized by: the method comprises the following steps:
(1) putting the regenerated semi-dull polyester chips into a crystallization drying system for crystallization drying treatment;
(2) the dried regenerated semi-dull polyester chips are melted and extruded by a screw extruder and are metered into a spinning manifold with a spinning assembly to form continuous lines, and then the continuous lines are cooled by cross air blow and are clustered and oiled to obtain tows;
(3) pre-meshing, drafting and shaping, main meshing and winding forming are carried out on the bunched and oiled filament bundle through a drafting and winding device, and then the regenerated crimped filament is obtained; the drafting and winding device comprises a spinning channel, a pre-screening device fixedly arranged below the spinning channel and used for pre-screening treatment, a second drafting hot roller and a second yarn dividing roller which are arranged on the same side of the pre-screening device and used for drafting shaping, and a main screening device arranged below the second yarn dividing roller, wherein a plurality of yarn guide ceramic pieces used for feeding pre-screened yarns into the second yarn dividing roller are arranged obliquely above one side of the second yarn dividing roller, and a plurality of yarn guides used for longitudinally feeding the drafting-shaped yarns into the main screening device are arranged below the other side of the second yarn dividing roller.
2. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: in the step (2), the spinning assembly comprises a spinneret plate, a plurality of discharge holes are formed in the spinneret plate, each discharge hole comprises four C-shaped slotted holes, and the four C-shaped slotted holes are enclosed into a transverse 8 shape.
3. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: the pre-network device is arranged at a position 10cm below the spinning channel.
4. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: and the guide wire porcelain pieces are arranged in a row, and the arrangement direction of the guide wire porcelain pieces is parallel to the axial direction of the second wire dividing roller.
5. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: a plurality of the silk guide is arranged in a row, the arrangement direction of the silk guides is parallel to the axial direction of the second silk dividing roller, and the silk guides are longitudinally opposite to the main network device.
6. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: in the step (1), the crystallization temperature is 150 ℃, the drying temperature is 150 ℃, and the drying time is 10 h.
7. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: in the step (2), the temperatures of the first zone to the sixth zone are 286 ℃, 290 ℃, 293 ℃, 295 ℃ and 295 ℃ respectively during melt extrusion of the screw extruder, the extrusion pressure is 15MPa, and the pressure after filtration is 10 MPa.
8. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: in the step (2), the temperature of a spinning box is 295 ℃, and the pressure of a spinning assembly is 20 MPa; the side blowing cooling wind pressure is 600Pa, and the side blowing cooling wind speed is 0.75 m/s; the oil nozzle for cluster oiling is a flat oil nozzle, the aperture of the oil nozzle is 0.5mm, the oiling height is 800mm, and the concentration ratio of the adopted oil agent is 18%.
9. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: in the step (3), the speed of the second drafting hot roller is 5000m/min, the temperature is 60 ℃, the speed of the second dividing roller is 4970m/min, and the temperature is 50 ℃ during drafting and shaping; the winding speed in the winding molding was 5000 m/min.
10. A method of producing a regenerated crimped yarn according to claim 1, characterized in that: in the step (3), the pre-network pressure is 0.25MPa, and the main network pressure is 0.25 MPa.
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| CN111809258B (en) * | 2020-04-29 | 2024-05-24 | 新凤鸣集团湖州中石科技有限公司 | Improved generation spinning production line |
| CN111394809B (en) * | 2020-04-30 | 2021-04-09 | 浙江佳人新材料有限公司 | Preparation process of graphene fibers |
| CN114892289A (en) * | 2022-04-28 | 2022-08-12 | 浙江佳宝聚酯有限公司 | Production method of multi-hollow regenerated wool-like fiber |
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| TWI222475B (en) * | 2001-07-30 | 2004-10-21 | Toray Industries | Polylactic acid fiber |
| CN100595358C (en) * | 2004-10-08 | 2010-03-24 | 厦门翔鹭化纤股份有限公司 | Process for producing wool-like polyester composite filament yarn |
| CN202465989U (en) * | 2012-02-27 | 2012-10-03 | 北京中丽制机工程技术有限公司 | Hot roller drawing type polytrimethylene terephthalate pre-oriented filament drawing and winding device |
| CN104451918B (en) * | 2014-12-11 | 2017-08-29 | 浙江尤夫高新纤维股份有限公司 | A kind of production method of the flat special-shaped polyester industrial filament yarn of fused mass directly spinning |
| CN104831417B (en) * | 2015-05-25 | 2017-04-19 | 四川大学 | Polyester elastomer/PET composite elastic fiber and preparation method thereof |
| CN105369372A (en) * | 2015-12-10 | 2016-03-02 | 河南省龙都生物科技有限公司 | Profiled fiber spinneret plate adopting stepped capillary spinneret hole structure |
| CN105648594B (en) * | 2015-12-29 | 2018-01-19 | 江苏恒力化纤股份有限公司 | A kind of low aberration polyester imitates linen look abnormal contraction composite filament and preparation method thereof |
| CN106435802A (en) * | 2016-09-29 | 2017-02-22 | 宁波中新腈纶有限公司 | Acrylic fibers with peanut-shaped cross section and production method thereof |
| KR101741799B1 (en) * | 2017-02-21 | 2017-05-31 | 클라시커 주식회사 | ball-type fiber filler formed by mixed fibers and ball-type fiber filler produced thereby |
| CN107447283B (en) * | 2017-08-31 | 2020-10-02 | 江苏中杰澳新材料有限公司 | Crimped chinlon conductive filament, manufacturing method and application thereof |
| CN108914231B (en) * | 2018-08-13 | 2021-02-26 | 福建永荣锦江股份有限公司 | Nylon 6 fully drawn yarn with curled appearance and production method thereof |
| CN109234823A (en) * | 2018-09-19 | 2019-01-18 | 扬州天富龙汽车内饰纤维有限公司 | A kind of method of recycled polyester material spinning 8-shaped hollow core staple fibers |
| CN110453304A (en) * | 2019-08-27 | 2019-11-15 | 江苏德力化纤有限公司 | A kind of preparation method and polyester fiber of Silk georgette fabric polyester fiber |
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