CN114875501B - Production method of PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn - Google Patents
Production method of PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn Download PDFInfo
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- CN114875501B CN114875501B CN202210598476.4A CN202210598476A CN114875501B CN 114875501 B CN114875501 B CN 114875501B CN 202210598476 A CN202210598476 A CN 202210598476A CN 114875501 B CN114875501 B CN 114875501B
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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
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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
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
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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
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
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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
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
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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
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- General Chemical & Material Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a production method of PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn, which is characterized in that bio-based slices are added, common nylon slices are compounded, a production process is optimized, the bio-based heterochromatic composite yarn is produced through high-speed spinning, then network air pressure is controlled, and the bio-based heterochromatic stripe composite elastic nylon yarn fiber capable of meeting the development requirement of a high-end market is developed on a texturing machine through a one-step stretch deformation technology. The invention ensures the style of the special-shaped color bars of the product, the production of the product is more stable, the stripe style is clearer, the performance is greatly improved, and the development of the product is suitable for the current energy-saving and environment-friendly international trend, so the invention has wide market prospect.
Description
Technical Field
The invention relates to the technical field of synthetic fiber production, in particular to a production method of PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn.
Background
The colored silk fabric has a colored pattern style with one dyed and heterochromatic color, can adjust the length pattern of the stripes according to the attractive visual requirement, can meet the attractive visual requirement of a user, has soft and greasy hand feeling and has remarkable moisture absorption effect.
The technological achievement nylon color silk put forward by 2017 is that the developed nylon stretch yarn is produced by adopting two PA6 slices (one of the raw materials is PA6 deeply dyed slices) with different color absorption effects through a melt blending technology. The product has a double-color effect and is widely applied.
However, the production of the product has the phenomenon of poor dyeing streak effect from the aspect of long-term mass production process. Because the deeply dyed nylon 6 slice is spun at a high speed, the later-stage printing and dyeing is fast in dyeing, the color is more bright, the dye utilization rate is high, and the dye is used for processing deep color fabrics and has good glossiness. But if the process is not properly controlled, spinnability and dyeing effects are greatly compromised. The production of the deeply dyed slices is unstable, so that the phenomenon of blurry dyed stripes and insufficient definition exists in the production process of the product. Therefore, in order to ensure that the color silk product with excellent effect is produced, the stability of slicing is required to be high.
Because most of the serial products are exported abroad and are used in the fields of sportswear, underwear and the like, the demand is large and the demand is high, so that the development of an upgrading and replacing product becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a production method of PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn, which ensures the style of special-shaped color stripes of products, ensures the production of the products to be more stable, ensures the stripe style to be clearer, greatly improves the performance, and is suitable for the current energy-saving and environment-friendly international trend, thus having wide market prospect.
The technical scheme adopted for solving the technical problems is as follows:
a production method of PA56/PA6 bio-based extraordinary color stripe composite elastic nylon yarn comprises the following steps:
(1) Preparation of POY filaments of PA56 and PA6 raw materials:
putting the dried PA56 raw material slices into a storage bin, melting by a screw extruder, accurately metering by a metering pump, spinning by a spinning box body and a spinneret plate, cooling by a side blowing, oiling by a nozzle to eliminate static electricity and increase the beam gathering property, sequentially passing through a network device, a first godet and a second godet, and finally winding and forming to obtain POY1 made of PA 56;
putting the dried PA6 raw material slices into a storage bin, melting by a screw extruder, accurately metering by a metering pump, spinning by a spinning box body and a spinneret plate, cooling by a side blowing, oiling by a nozzle to eliminate static electricity and increase the beam gathering property, sequentially passing through a network device, a first godet and a second godet, and finally winding and forming to obtain POY2 made of PA 6;
(2) One-step stretching deformation:
the balanced POY1 and POY2 are conveyed to a first roller through a yarn guide tube and a yarn cutter, conveyed to a hot box through a yarn stop device and a yarn guide, heated for shaping and stress relief, cooled through a cooling plate, twisted and deformed through a false twister and conveyed to a second roller; and then sequentially passing through a network device and an auxiliary roller, oiling through an oiling roller to increase the cohesion of the tows and eliminate static electricity, and finally winding and forming to obtain the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn.
The bio-based composite elastic nylon yarn fiber with the different color stripes can meet the development requirements of high-end markets by adding the bio-based chips, compounding the common nylon chips, optimizing the production process, producing the bio-based composite yarn through high-speed spinning, controlling the air pressure of a network and developing the bio-based composite elastic nylon yarn fiber with the different color stripes on a texturing machine through a one-step stretching deformation technology.
For bio-based heterochromatic composite filament fiber products, the key point is the characteristic of the yarn to have a dyeing heterochromatic effect. The product has stable spinnability and stable color effect. The production of such products is therefore somewhat challenging.
There are currently two ways for the production of the heterochromatic yarn: firstly, the common yarn is dyed with two colors at the back and then is woven by a special weaving process, but the mode has certain difficulty in dyeing and finishing, and has certain skill in weaving, so that the product cost is higher. The product of the invention is more efficient and practical. The method is realized by using raw materials with different color absorption properties to carry out composite spinning during yarn production, directly producing composite yarns, and then carrying out simple dyeing and weaving by the same dye to show different color stripe styles. Meanwhile, different from the production of the prior heterochromatic yarn, the raw materials are mainly selected from two nylon 6 slices with different color absorption effects to carry out composite production (one of the raw materials is a deeply dyed PA6 slice), however, the invention particularly uses the bio-based nylon slice to replace the deeply dyed polyamide slice, so that the color stripe style of the product is clearer, the product also has the excellent performances of environmental protection, softness, easy dyeing, moisture absorption, quick drying, high strength, good wear resistance and the like of the bio-based fiber, and is widely applied to the fields of sportswear, yoga wear, underwear and the like.
In the production of the traditional heterochromatic yarn, although one of the raw materials is a specially developed deeply dyed slice, the slice has higher amino content, and the color absorbing effect is improved by utilizing the strong interaction between the amino end and acid dye molecules. However, if the process is controlled improperly, the spinnability (breakage rate) and dyeing effect are greatly reduced, the dyeing stripe effect is not clear, the patterns on the cloth cover are blurred, and the stripe style is deviated.
The invention adopts the substitution of the biological base slice, well solves the defects of unstable fiber dyeing and the like, ensures that the spinnability of the product is better, improves the breaking strength of the fiber product from the previous 3.32 to 4.02CN/dtex, saves the energy consumption and greatly improves the economic benefit of the product.
Preferably, POY1 is prepared by: the temperature of each zone of the screw extruder is controlled as follows: 270-280 deg.c; the melting temperature of the melt is controlled between 270 ℃ and 279 ℃; the spinneret pressure is controlled between 15 and 18MPa.
Preferably, POY1 and POY2 are prepared by: the wind speed of the lateral blowing is 0.38-0.55m/s, the wind temperature is 17.5-18.5 ℃, and the wind speed is as follows: 90-95%; the blowing direction of the lateral blowing is vertical to the spinning hole; the oil-applying rate is controlled to be 1.6-1.8%.
Preferably, POY1 is prepared by: the network pressure is controlled between 0.15 and 0.18MPa; the speed of the first godet is 4800-4990m/min; the speed of the second godet is 4900-5200m/min; the stretching multiple is controlled between 1 and 1.2; the winding speed is controlled between 4800 and 5000m/min.
Preferably, POY2 is prepared by: the temperature of each zone of the screw extruder is controlled as follows: 250-256 deg.c; the melting temperature of the melt is controlled between 250 ℃ and 253 ℃; the spinneret pressure is controlled between 15 and 17MPa.
Preferably, POY2 is prepared by: the network pressure is controlled between 0.15 and 0.17MPa; the speed of the first godet is 4200-4300m/min; the second godet speed is 4300-4400m/min; the stretching multiple is controlled between 1 and 1.2; the winding speed is controlled between 4300 and 4400m/min.
Preferably, the fineness of POY1 is controlled to be 20-95D, and the number of holes is controlled to be 12-96f; the fineness of POY2 is controlled to be 20-95D, and the number of holes is controlled to be 12-96f.
Preferably, in the step (2), the stretching ratio is controlled to be 1.2-1.25, the temperature of a hot box is controlled to be 165-170 ℃, the speed ratio D/Y of a false twister is controlled to be 1.55-1.7, the rotating speed of an oil roller is controlled to be 0.6-0.8rpm, and the spinning speed is controlled to be 430-460m/min.
Preferably, in the step (2), the fineness of the PA56/PA6 bio-based heterocolor stripe composite elastic nylon yarn is controlled to be 30-150D, and the hole number is controlled to be 24-192f.
Preferably, the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn comprises 45-55wt% of PA56 and 45-55wt% of PA 6.
The beneficial effects of the invention are as follows: the fiber has special-shaped color stripes, so that the product has good comfort and visual effect besides good greasy hand feeling. Meanwhile, the product also has the excellent performances of environmental protection, softness, easy dyeing, moisture absorption, quick drying, high strength, good wear resistance and the like by combining the biological base characteristics of the raw materials, and is widely applied to the fields of sportswear, yoga clothes, underwear and the like.
Drawings
FIG. 1 is a flow chart of the POY feedstock spinning process of the present invention.
FIG. 2 is a flow chart of preparing PA56/PA6 bio-based extraordinary color stripe composite elastic nylon yarn by one-step texturing;
the reference numerals in fig. 1 and 2 are represented as: 1-bin, 2-screw extruder, 3-spinning beam, 4-spinneret, 5-side blowing window, 6-channel, 7-godet, 8-neter, 9-first godet, 10-second godet, 11-winding bobbin, 12-PA56, 13-PA6, 14-godet, 15-shredder, 16-first roller, 17-godet, 18-twist stop, 19-hot box, 20-cooling plate, 21-false twister, 22-godet, 23-second roller, 24-neter, 25-auxiliary roller, 26-DTY bobbin.
FIG. 3 is a photograph of a cloth sample formed after dyeing of the product of the present invention.
Fig. 4 is a photograph of a cloth sample formed after dyeing a product produced by using two PA6 cut pieces having different color absorbing effects.
Detailed Description
The technical scheme of the invention is further specifically described by the following specific examples.
In the present invention, the materials and equipment used are commercially available or commonly used in the art, unless otherwise specified. The methods in the following examples are conventional in the art unless otherwise specified.
Example 1:
1. melt spinning to prepare two POY raw materials (specific flow is shown in fig. 1):
1. POY1: preparation of PA 56:
the production raw materials are as follows: kaiser biological PA56 deep-dyeing semi-gloss section
Operation procedure:
(1) Putting the dried semi-extinction PA56 slices into a storage bin, melting through a screw extruder, accurately metering and distributing by a metering pump, and entering a spinning box body for spinning through a spinneret plate; the temperature of each zone of the screw extruder is controlled as follows: 270-280 deg.c (five zones: 270 deg.c, 275 deg.c, 278 deg.c, 280 deg.c); the melting temperature of the melt is controlled at 275 ℃; the spinneret pressure was controlled at 17MPa.
(2) Cooling by side blowing, and oiling and bundling a nozzle tip; the wind speed of the lateral blowing is 0.38m/s, the wind temperature is 17.5 ℃, and the wind speed is as follows: 90%; the blowing direction of the lateral blowing is vertical to the spinning hole. The oiling rate is controlled at 1.6% to eliminate static electricity and increase the tow gathering property.
(3) The filament bundle passes through a network device, a first godet GR1 and a second godet GR2, and finally is wound and formed.
The network pressure is controlled between 0.18MPa; the first godet GR1 speed is 4800m/min; the speed of the second godet GR2 is 4900m/min; the stretching multiple is controlled to be 1; the winding speed was controlled at 5000m/min.
(4) The POY titer of the PA56 was controlled at 25D and the pore count was controlled at 12f.
2. POY2: preparation of PA 6:
the production raw materials are as follows: polymerized cis-PA 6 semi-gloss slice
Operation procedure:
(1) Putting the dried semi-extinction PA6 slices into a storage bin, melting through a screw extruder, accurately metering and distributing by a metering pump, and entering a spinning box body for spinning through a spinneret plate; the temperature of each zone of the screw extruder is controlled as follows: 250-256 deg.c (five zones: 250 deg.c, 252 deg.c, 254 deg.c, 256 deg.c); the melting temperature of the melt is controlled at 250 ℃; the spinneret pressure was controlled at 15MPa.
(2) Cooling by side blowing, and oiling and bundling a nozzle tip; the wind speed of the lateral blowing is 0.38m/s, the wind temperature is 17.5 ℃, and the wind speed is as follows: 90%; the blowing direction of the lateral blowing is vertical to the spinning hole. The oiling rate is controlled at 1.6% to eliminate static electricity and increase the tow gathering property.
(3) The filament bundle passes through a network device, a first godet GR1 and a second godet GR2, and finally is wound and formed.
The network pressure is controlled between 0.15 MPa; the first godet GR1 speed is 4200m/min; the speed of the second godet GR2 is 4300m/min; the stretching multiple is controlled to be 1; the winding speed was controlled at 4300m/min.
(4) The fineness of the PA6 raw material is controlled to be 25D, and the pore number is controlled to be 12f.
2. Preparing PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn by one-step texturing (the specific flow is shown in figure 2);
operation procedure:
(1) Adopting a one-step stretching deformation process, respectively passing two balanced POY raw materials (POY 1 and POY 2) through a wire guide tube, a wire cutting device to a first roller, a twisting stopper and a wire guide to a hot box, heating for shaping and eliminating stress, cooling by a cooling plate, twisting and deforming by a false twisting device and passing through a second roller, wherein the POY raw materials are prepared and then placed in a constant temperature and humidity environment for about 8-12 hours; and then sequentially oiling the yarn bundles through a network device, an auxiliary roller and an oil passing roller to increase the cohesion of the yarn bundles and eliminate static electricity, and finally winding and forming.
(2) The two POY are respectively 25D/12f PA56 and PA6 raw materials; the stretching ratio is controlled to be 1.2, and the yarns can acquire orientation in the direction of acting force through stretching, so that the fibers are rearranged and elastically deformed and plastically deformed;
(3) The temperature of the hot box is controlled at 165 ℃, and the twisting stress is eliminated by utilizing thermal motion, so that twisting deformation can not be recovered and heat setting is carried out; the speed ratio D/Y of the false twister is controlled at 1.55, so that the false twist of yarn can be increased, the cohesion of the yarn bundle is improved, the residual torque is reduced, the fluctuation of the front and rear tension of the friction disc can be reduced, and the stable production operation is facilitated;
(4) The rotating speed of the oil roller is controlled to be 0.6rpm, and the spinning speed is controlled to be 430m/min;
(5) The fineness of the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn is controlled at 40D, the pore number is controlled at 24f, the raw material PA56 accounts for 45wt% and the PA6 accounts for 55wt%.
Example 2:
1. melt spinning to prepare two POY raw materials (specific flow is shown in fig. 1):
1. POY1: preparation of PA 56:
the production raw materials are as follows: kaiser biological PA56 deep-dyeing semi-gloss section
Operation procedure:
(1) Putting the dried semi-extinction PA6 slices into a storage bin, melting through a screw extruder, accurately metering and distributing by a metering pump, and entering a spinning box body for spinning through a spinneret plate; the temperature of each zone of the screw extruder is controlled as follows: 270-280 deg.c (five zones: 270 deg.c, 275 deg.c, 278 deg.c, 280 deg.c); the melting temperature of the melt is controlled at 270 ℃; the spinneret pressure was controlled at 18MPa.
(2) Cooling by side blowing, and oiling and bundling a nozzle tip; the wind speed of the lateral blowing is 0.55m/s, the wind temperature is 18.5 ℃, and the wind speed is as follows: 95%; the blowing direction of the lateral blowing is vertical to the spinning hole. The oiling rate is controlled at 1.8% to eliminate static electricity and increase the tow gathering property.
(3) The filament bundle passes through a network device, a first godet GR1 and a second godet GR2, and finally is wound and formed.
The network pressure is controlled at 0.18MPa; the speed of the first godet GR1 is 4990m/min; the speed of the second godet GR2 is 5200m/min; the stretching multiple is controlled to be 1.04; the winding speed was controlled at 5000m/min.
(4) The fineness of the PA56 raw material is controlled to be 95D, and the pore number is controlled to be 72f.
2. POY2: preparation of PA 6:
the production raw materials are as follows: polymerized cis-PA 6 semi-gloss slice
Operation procedure:
(1) Putting the dried semi-extinction PA6 slices into a storage bin, melting through a screw extruder, accurately metering and distributing by a metering pump, and entering a spinning box body for spinning through a spinneret plate; the temperature of each zone of the screw extruder is controlled as follows: 250-256 deg.c (five zones: 250 deg.c, 252 deg.c, 254 deg.c, 256 deg.c); the melting temperature of the melt is controlled at 253 ℃; the spinneret pressure was controlled at 17MPa.
(2) Cooling by side blowing, and oiling and bundling a nozzle tip; the wind speed of the lateral blowing is 0.55m/s, the wind temperature is 18.5 ℃, and the wind speed is as follows: 95%; the blowing direction of the lateral blowing is vertical to the spinning hole. The oiling rate is controlled at 1.8% to eliminate static electricity and increase the tow gathering property.
(3) The filament bundle passes through a network device, a first godet GR1 and a second godet GR2, and finally is wound and formed.
The network pressure is controlled at 0.17MPa; the first godet GR1 speed is 4300m/min; the speed of the second godet GR2 is 4400m/min; the stretching multiple is controlled to be 1.02; the winding speed was controlled at 4400m/min.
(4) The fineness of the PA6 raw material is controlled to be 95D, and the pore number is controlled to be 72f.
2. Preparing PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn by one-step texturing (the specific flow is shown in figure 2);
operation procedure:
(1) Adopting a one-step stretching deformation process, respectively passing the two balanced POY raw materials through a wire guide tube, a wire cutting device to a first roller, a wire stopping device and a wire guide to a hot box, heating for shaping and eliminating stress, cooling by a cooling plate, twisting and deforming by a false twister, and passing through a second roller; and then sequentially oiling the yarn bundles through a network device, an auxiliary roller and an oil passing roller to increase the cohesion of the yarn bundles and eliminate static electricity, and finally winding and forming.
(2) The two POY are respectively PA56 and PA6 raw materials of 95D/72 f; the stretching ratio is controlled to be 1.25, and the yarns can acquire orientation in the direction of acting force through stretching, so that the fibers are rearranged and elastically deformed and plastically deformed;
(3) The temperature of the hot box is controlled at 170 ℃, and the twisting stress is eliminated by utilizing thermal motion, so that twisting deformation can not be recovered and heat setting is carried out; the speed ratio D/Y of the false twister is controlled at 1.7, so that the false twist of yarn can be increased, the cohesion of the yarn bundle is improved, the residual torque is reduced, the fluctuation of the front and rear tension of the friction disc can be reduced, and the stable production operation is facilitated;
(4) The rotating speed of the oil roller is controlled to be 0.8rpm, and the spinning speed is controlled to be 460m/min;
(5) The fineness of the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn is controlled to be 150D, and the number of holes is controlled to be 144f; 55wt% of PA56 and 45wt% of PA 6.
Example 3:
1. melt spinning to prepare two POY raw materials (specific flow is shown in fig. 1):
1. POY1: preparation of PA 56:
the production raw materials are as follows: kaiser biological PA56 deep-dyeing semi-gloss section
Operation procedure:
(1) Putting the dried semi-extinction PA56 slices into a storage bin, melting through a screw extruder, accurately metering and distributing by a metering pump, and entering a spinning box body for spinning through a spinneret plate; the temperature of each zone of the screw extruder is controlled as follows: 270-280 deg.c (five zones: 270 deg.c, 275 deg.c, 278 deg.c, 280 deg.c); the melting temperature of the melt is controlled to be 279 ℃; the spinneret pressure was controlled at 17MPa.
(2) Cooling by side blowing, and oiling and bundling a nozzle tip; the wind speed of the lateral blowing is 0.45m/s, the wind temperature is 18 ℃, and the wind speed is as follows: 92%; the blowing direction of the lateral blowing is vertical to the spinning hole. The oiling rate is controlled at 1.7% to eliminate static electricity and increase the tow gathering property.
(3) The filament bundle passes through a network device, a first godet GR1 and a second godet GR2, and finally is wound and formed.
The network pressure is controlled at 0.17MPa; the first godet GR1 speed is 4900m/min; the speed of the second godet GR2 is 5000m/min; the stretching multiple is controlled to be 1.02; the winding speed is controlled between 4900 m/min.
(4) The fineness of the PA56 raw material is controlled at 47D, and the pore number is controlled at 24f.
2. POY2: preparation of PA 6:
the production raw materials are as follows: polymerized cis-PA 6 semi-gloss slice
Operation procedure:
(1) Putting the dried semi-extinction PA6 slices into a storage bin, melting through a screw extruder, accurately metering and distributing by a metering pump, and entering a spinning box body for spinning through a spinneret plate; the temperature of each zone of the screw extruder is controlled as follows: 250-256 deg.c (five zones: 250 deg.c, 252 deg.c, 254 deg.c, 256 deg.c, 254 deg.c); the melting temperature of the melt is controlled at 252 ℃; the spinneret pressure was controlled at 16MPa.
(2) Cooling by side blowing, and oiling and bundling a nozzle tip; the wind speed of the lateral blowing is 0.45m/s, the wind temperature is 18 ℃, and the wind speed is as follows: 92%; the blowing direction of the lateral blowing is vertical to the spinning hole. The oiling rate is controlled at 1.7% to eliminate static electricity and increase the tow gathering property.
(3) The filament bundle passes through a network device, a first godet GR1 and a second godet GR2, and finally is wound and formed.
The network pressure is controlled at 0.16MPa; the speed of the first godet GR1 is 4250m/min; the speed of the second godet GR2 is 4350m/min; the stretching multiple is controlled to be 1.02; the winding speed was controlled between 4350 m/min.
(4) The fineness of the PA6 raw material is controlled to be 47D, and the pore number is controlled to be 36f.
2. Preparing PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn by one-step texturing (the specific flow is shown in figure 2);
operation procedure:
(1) Adopting a one-step stretching deformation process, respectively passing the two balanced POY raw materials through a wire guide tube, a wire cutting device to a first roller, a wire stopping device and a wire guide to a hot box, heating for shaping and eliminating stress, cooling by a cooling plate, twisting and deforming by a false twister, and passing through a second roller; and then sequentially oiling the yarn bundles through a network device, an auxiliary roller and an oil passing roller to increase the cohesion of the yarn bundles and eliminate static electricity, and finally winding and forming.
(2) PA56 and PA6 raw materials of the two POYs; the stretching ratio is controlled to be 1.22, and the yarns can acquire orientation in the direction of acting force through stretching, so that the fibers are rearranged and elastically deformed and plastically deformed;
(3) The temperature of the hot box is controlled at 168 ℃, and the twisting stress is eliminated by utilizing thermal motion, so that twisting deformation can not be recovered and heat setting is carried out; the speed ratio D/Y of the false twister is controlled at 1.6, so that the false twist of yarn can be increased, the cohesion of the yarn bundle is improved, the residual torque is reduced, the fluctuation of the front and rear tension of the friction disc can be reduced, and the stable production operation is facilitated;
(4) The rotating speed of the oil roller is controlled to be 0.7rpm, and the spinning speed is controlled to be 450m/min;
(5) The fineness of the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn is controlled to be 80D, and the hole number is controlled to be 60f; 50wt% of raw material PA56 and 50wt% of PA 6.
The PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn prepared by the embodiment of the invention has the following comprehensive performance after testing:
the breaking strength is more than or equal to 3.71CN/dtex, and the breaking elongation (%): m1 + -5, M1 is the central value of elongation at break, in the range of 25% -50%; boiling water shrinkage/%: m2+/-1.5, wherein M2 is a central value of boiling water shrinkage rate and is in the range of 5.5% -10%; curl shrinkage: not less than 40%, curl stability: more than or equal to 40 percent. And the silk thread bundling performance is good, the dyeing stripes are clear, and the product also has the excellent performances of green environmental protection, softness and easy dyeing of the bio-based product.
The dyed yarn and the formed cloth-like stripes of the product of the invention are clear (figure 3), while the cloth-like stripes formed by the prior product are blurred (figure 4).
The above-described embodiment is only a preferred embodiment of the present invention, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (7)
1. The production method of the PA56/PA6 bio-based extraordinary color stripe composite elastic nylon yarn is characterized by comprising the following steps:
(1) Preparation of POY filaments of PA56 and PA6 raw materials:
putting the dried PA56 raw material slices into a storage bin, melting by a screw extruder, accurately metering by a metering pump, spinning by a spinning box body and a spinneret plate, cooling by a side blowing, oiling by a nozzle to eliminate static electricity and increase the beam gathering property, sequentially passing through a network device, a first godet and a second godet, and finally winding and forming to obtain POY1 made of PA 56;
putting the dried PA6 raw material slices into a storage bin, melting by a screw extruder, accurately metering by a metering pump, spinning by a spinning box body and a spinneret plate, cooling by a side blowing, oiling by a nozzle to eliminate static electricity and increase the beam gathering property, sequentially passing through a network device, a first godet and a second godet, and finally winding and forming to obtain POY2 made of PA 6;
(2) One-step stretching deformation:
the balanced POY1 and POY2 are conveyed to the same first roller through a yarn guide tube and the same yarn cutter, conveyed to the same hot box through the same yarn stop device and the same yarn guide device, heated and shaped, subjected to stress relief, cooled through the same cooling plate, twisted and deformed through the same false twister and conveyed to the same second roller; sequentially passing through the same network device and the same auxiliary roller, oiling through an oiling roller to increase the cohesion of the tows and eliminate static electricity, and finally winding and forming to obtain the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn;
in the step (2), the stretching ratio is controlled to be 1.2-1.25, the temperature of a hot box is controlled to be 165-170 ℃, the speed ratio D/Y of a false twister is controlled to be 1.55-1.7, the rotating speed of an oil roller is controlled to be 0.6-0.8rpm, and the spinning speed is controlled to be 430-460m/min;
in the step (2), the fineness of the PA56/PA6 bio-based heterocolor stripe composite elastic nylon yarn is controlled to be 30-150D, and the pore number is controlled to be 24-192f;
45-55wt% of PA56 and 45-55wt% of PA6 in the PA56/PA6 bio-based heterochromatic stripe composite elastic nylon yarn.
2. The method according to claim 1, wherein POY1 is prepared by: the temperature of each zone of the screw extruder is controlled as follows: 270-280 deg.c; the melting temperature of the melt is controlled between 270 ℃ and 279 ℃; the spinneret pressure is controlled between 15 and 18MPa.
3. The production method according to claim 1, wherein POY1 and POY2 are produced by: the wind speed of the lateral blowing is 0.38-0.55m/s, the wind temperature is 17.5-18.5 ℃, and the wind speed is as follows: 90-95%; the blowing direction of the lateral blowing is vertical to the spinning hole; the oil-applying rate is controlled to be 1.6-1.8%.
4. The method according to claim 1, wherein POY1 is prepared by: the network pressure is controlled between 0.15 and 0.18MPa; the speed of the first godet is 4800-4990m/min; the speed of the second godet is 4900-5200m/min; the stretching multiple is controlled between 1 and 1.2; the winding speed is controlled between 4800 and 5000m/min.
5. The production method according to claim 1, wherein POY2 is produced by: the temperature of each zone of the screw extruder is controlled as follows: 250-256 deg.c; the melting temperature of the melt is controlled between 250 ℃ and 253 ℃; the spinneret pressure is controlled between 15 and 17MPa.
6. The production method according to claim 1, wherein POY2 is produced by: the network pressure is controlled between 0.15 and 0.17MPa; the speed of the first godet is 4200-4300m/min; the second godet speed is 4300-4400m/min; the stretching multiple is controlled between 1 and 1.2; the winding speed is controlled between 4300 and 4400m/min.
7. The production method according to claim 1, wherein the fineness of POY1 is controlled to 20 to 95D; the fineness of POY2 is controlled to be 20-95D.
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| CN103966681A (en) * | 2014-05-19 | 2014-08-06 | 于海龙 | POY-DTY production method for chinlon 56DTY high stretch yarn |
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