CN114164516A - Production method of colored polyester high-shrinkage fully drawn yarn with high light fastness - Google Patents
Production method of colored polyester high-shrinkage fully drawn yarn with high light fastness Download PDFInfo
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- CN114164516A CN114164516A CN202111478366.6A CN202111478366A CN114164516A CN 114164516 A CN114164516 A CN 114164516A CN 202111478366 A CN202111478366 A CN 202111478366A CN 114164516 A CN114164516 A CN 114164516A
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- 229920000728 polyester Polymers 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 48
- 238000009987 spinning Methods 0.000 claims abstract description 52
- 238000004040 coloring Methods 0.000 claims abstract description 38
- 238000001035 drying Methods 0.000 claims abstract description 37
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 35
- 238000007664 blowing Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000002074 melt spinning Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 238000013329 compounding Methods 0.000 claims description 11
- 235000010290 biphenyl Nutrition 0.000 claims description 10
- 239000004305 biphenyl Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 230000004580 weight loss Effects 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000008041 oiling agent Substances 0.000 claims 3
- 239000004744 fabric Substances 0.000 abstract description 29
- 239000000835 fiber Substances 0.000 abstract description 14
- 239000004753 textile Substances 0.000 abstract description 11
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000002912 waste gas Substances 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 5
- 238000004043 dyeing Methods 0.000 abstract description 3
- 238000009973 dope dyeing Methods 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 31
- 229920000139 polyethylene terephthalate Polymers 0.000 description 27
- 238000009941 weaving Methods 0.000 description 10
- 230000006855 networking Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 238000007385 chemical modification Methods 0.000 description 5
- 229920004933 Terylene® Polymers 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 208000016261 weight loss Diseases 0.000 description 3
- 241001481789 Rupicapra Species 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 241001388119 Anisotremus surinamensis Species 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- MPCKOQMIBZHVGJ-UHFFFAOYSA-N benzene-1,3-dicarboxylic acid;ethane-1,2-diol Chemical compound OCCO.OC(=O)C1=CC=CC(C(O)=O)=C1 MPCKOQMIBZHVGJ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- 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
-
- 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
- D02J1/224—Selection or control of the temperature during stretching
-
- 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
- D02J1/228—Stretching in two or more steps, with or without intermediate steps
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a production method of colored polyester high-shrinkage fully drawn yarn with high light fastness, which comprises the following steps: s1, pre-crystallizing and drying the PET slices; s2, drying the coloring master batch; s3, mixing the PET slices with the coloring master batches to obtain a mixed material; s4, carrying out melt spinning on the mixed material through a spinning screw; s5, cooling the yarns obtained by spinning in a side blowing mode; s6, oiling the cooled yarn; s7, pre-meshing, hot roller stretching, main meshing and winding are carried out on the yarn, and the colored polyester high-shrinkage fully drawn yarn with high light-resistant color fastness is obtained. The invention adopts the dope dyeing spinning process, the production process has no three-waste pollution of waste water, waste gas, waste residue and the like, and the subsequent products do not need dyeing, thus being environment-friendly fiber. The FDY prepared by the invention has higher weather resistance, and the terminal product can be applied to outdoor sun-shading fabrics, high-end clothing textile fabrics, high-end home textile fabrics, automotive interior fabrics and the like.
Description
Technical Field
The invention relates to the technical field of functional filaments for spinning, in particular to a production method of colored polyester high-shrinkage fully drawn yarn with high light fastness.
Background
The polyester high-shrinkage yarn is a differentiated polyester filament yarn product developed by taking a chemically modified high-shrinkage slice as a raw material, and the boiling water shrinkage rate of the polyester high-shrinkage yarn is generally more than 30%. In the initial development of high shrinkage polyester fibers, the polyester fibers are mainly used for manufacturing base fabrics of artificial leather, and are mainly used for producing fabrics such as bulked thick textiles, clothing and the like at present. The high-shrinkage polyester fiber can be rapidly shrunk under a heated condition to form bulked yarn or fabric with concave-convex patterns.
At present, the method for producing the terylene high-shrinkage fiber comprises two methods of physical modification and chemical modification, wherein the physical modification is to produce the high-shrinkage filament with the boiling water shrinkage rate of more than 30 percent by the terylene filament through the processes of low-temperature stretching, low-temperature shaping and the like. The chemical modification is that a third monomer (such as ethylene glycol isophthalate and neopentyl glycol) is added in the polyester polymerization process to prepare modified polyester chips, and the modified polyester chips are dried, spun and the like to prepare the terylene high-shrinkage fiber. The physical modification method has low cost and simple process route, but the boiling water shrinkage rate of the product is relatively low, the dimensional stability is not high, the process of the chemical modification method is mature, and the dyeability, pilling resistance and high shrinkage of the fiber are excellent. However, the existing chemical modification method can cause pollution of waste water, waste gas, waste residue and the like, and the pollution problem is serious, and the terylene high-shrinkage fiber product produced by the existing chemical modification method needs to be dyed in the later period, and has poor light fastness and color fastness.
Disclosure of Invention
The invention aims to provide a method for producing colored polyester high-shrinkage fully drawn yarns with high light-resistant color fastness aiming at the problems in the prior art.
The invention is realized by the following technical scheme:
a production method of colored polyester high-shrinkage fully drawn yarn with high light fastness is characterized by comprising the following steps:
s1, pre-crystallizing and drying the PET slices;
s2, drying the coloring master batch;
s3, uniformly mixing the pre-crystallized and dried PET slices obtained in the step S1 with the dried coloring master batches obtained in the step S2 to obtain a mixed material;
s4, carrying out melt spinning on the mixed material through a spinning screw;
s5, cooling the yarns obtained by spinning in a side blowing mode;
s6, oiling the cooled yarn;
s7, pre-meshing, hot roller stretching, main meshing and winding are carried out on the yarn after oiling to obtain the colored polyester high-shrinkage fully drawn yarn with high light-resistant color fastness.
The colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness is produced by using a stock solution coloring method and taking chemically modified PET high-shrinkage slices and high-weather-resistant coloring master batches as processing raw materials, the coloring master batches with high light fastness are added, the metering is accurate, the fiber is dyed when being spun, the color difference in a filament batch is zero, no waste water, waste gas or waste residue is generated in the production process, and the subsequent product does not need dyeing, so that the FDY is environment-friendly fiber.
The colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness and high color fastness adopts high-light-fastness coloring master batches and PET slices for blending spinning, has high weather resistance, and can be applied to outdoor sun-shading fabrics, high-end clothing textile fabrics, high-end home textile fabrics, automotive interior fabrics and the like.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: step S1, pre-crystallizing and drying the PET slices; wherein the pre-crystallization temperature is 155-160 ℃, and the pre-crystallization time is 8-30 minutes; the drying temperature is 165-175 ℃, and the drying is carried out until the water content of the slices is less than or equal to 30 ppm.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: and step S2, putting the coloring master batch into a master batch drying kettle for drying, wherein the drying temperature is 110-120 ℃, the material level is adjusted to be not more than 70% of the master batch drying kettle, and the retention and drying time of the coloring master batch is ensured to be not less than 12 hours. The coloring master batch is pre-crystallized before the delivery of a supplier, and can be directly dried.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: step S3, uniformly mixing the pre-crystallized and dried PET slices in the step S1 and the dried coloring master batches in the step S2 by using a weight-loss feeder metering and mixing system to obtain a mixed material; based on 100 of the total mass of the coloring master batch and the PET slice, wherein the coloring master batch accounts for 1-12 wt%; the metering and compounding system is corrected for at least 2 times, the mass percentages of the master batch and the slice are adjusted on line, and metering is carried out, so that the flow error of the metering and compounding system is ensured to be less than or equal to 1%. And (3) carrying out color comparison with a seal sample and a batch sample according to a standard gray card during spinning.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: step S4, carrying out melt spinning on the mixed material through a spinning screw; the spinning process comprises the following steps: adjusting the temperature of each extrusion area of the spinning screw to be controlled at 290 ℃ in the range of 240 ℃ in the range of 290 ℃, the spinning temperature is controlled at 285 ℃ in the range of 280 ℃ in the range of 285 ℃, heating and preserving heat by adopting biphenyl steam, controlling the temperature of the biphenyl steam at 286 ℃ in the range of 280 ℃, the diameter of the spinning assembly to be 90-95mm, adopting 60-80-100 mesh metal filter sand as the assembly, controlling the initial pressure of the spinning assembly to be 12-14MPa, selecting 12-288 holes of the spinneret plate, and controlling the diameter of the spinneret hole to be 0.22-0.28 mm. The spinning adopts a single component or a one-to-two process, namely, the spinning is divided into two parts by taking the center line of a spinneret plate as a boundary, and each strand of yarn contains the common number of the spinneret plate.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: and step S5, cooling the spun yarn by adopting a cross air blowing mode, wherein the temperature of the cross air blowing is 20-29 ℃, the humidity is 70-90%, the air blowing speed is 0.4-0.6m/min, and the air pressure is controlled at 500-600 Pa. Preferably, in order to reduce the occurrence of batch of balls and filaments during the fabric weaving, the blowing speed must be strictly controlled between 0.4 and 0.6m/min and the air pressure must be controlled at 500-600 Pa.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: cooling the yarn obtained by spinning by adopting a side blowing mode, wherein the side blowing temperature is 25-29 ℃ in spring and summer, and the humidity is 80-90%; the temperature of the lateral air blowing in autumn and winter is 20-25 deg.C, and the humidity is 70-80%.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: and step S6, quantitatively conveying the oil to an oil nozzle by an oil pump to oil the yarn, wherein the rotating speed of the oil pump is controlled at 20-30 Hz/min.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: the oil is bamboo oil, the brand is F-1048, and the concentration of the oil is 9-16%.
Further, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps: step S7, pre-networking, hot roller stretching, main networking and winding are carried out on the yarn after oiling to obtain the colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light-resistant color fastness; wherein the hot roller drawing comprises a first godet roller drawing procedure and a second godet roller drawing and shaping procedure which are sequentially carried out, the speed of the first godet roller is 1600-2000m/min, the temperature of the first godet roller is 85 +/-5 ℃, the speed of the second godet roller is 4200-4600m/min, and the temperature of the second godet roller is 100 +/-5 ℃; the winding speed was 4150-4650 m/min. Preferably, in order to ensure the weaving performance of the FDY yarns, the production process of the invention uses a pre-network and a main network to carry out network processing on the FDY yarns, increases the cohesion of the yarns, properly reduces the drafting multiple to 3.2, and reduces the batch of broken filaments and broken balls generated in the subsequent weaving of the yarns. Wherein: the first godet roll is mainly used for hot drawing, and the second godet roll is mainly used for hot setting.
Specifically, the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness provided by the invention takes PET (polyethylene terephthalate) high-shrinkage chips and coloring master batches with high light fastness as raw materials for preparation, and has the following process flows: raw material conveying → pre-crystallization of PET high-shrinkage slices → coloring master batch, drying of PET high-shrinkage slices → metering and mixing of coloring master batch and PET high-shrinkage slices → melt spinning → cooling blowing → oiling → pre-network → hot stretching → heat setting → network → winding → inspection → packaging and warehousing. Heat setting is accomplished by a second godet roll.
The invention provides a production method of a colored polyester high-shrinkage fully drawn yarn with high light fastness of 33-333 dt/12-288 f, and the stock solution colored FDY produced by the method can be made into wool-like fabrics with different forms of concave-convex patterns with conventional polyester, acrylic fibers, viscose, wool and other blended fabrics after heat treatment. The wool-like fabric has strong stereoscopic impression, soft hand feeling, plump, compact and beautiful appearance, is suitable for manufacturing special textiles such as wool-like medium-length tweed, tight crepe, concave-convex knitted fabrics, artificial chamois and the like, and is an ideal raw material of a new generation of textile products.
The invention has the beneficial effects that:
(1) the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness adopts a stock solution coloring spinning process, and by adding the coloring master batch with high light fastness, accurate metering is carried out, the fiber is dyed when being spun, and the color difference in a filament batch is zero, no waste water, waste gas or waste residue is generated in the production process, and subsequent products do not need dyeing, so that the colored polyester high-shrinkage fully drawn yarn is environment-friendly fiber.
(2) The production method can prepare 33-333 dt/12-288 f colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness, and the FDY can be blended with conventional polyester fiber, wool, cotton and the like or interwoven with polyester cotton and pure cotton yarn to produce fabrics with unique style, and the fabrics have the advantages of strong stereoscopic impression, soft hand feeling, fullness, compactness and attractiveness, are suitable for manufacturing special textiles such as wool-like medium-length tweed, tight crepe, concave-convex knitted fabrics, artificial chamois and the like, and are ideal raw materials of new-generation textile products. The colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness and high color fastness adopts high-light-fastness coloring master batches and PET slices for blending spinning, has high weather resistance, and can be applied to outdoor sun-shading fabrics, high-end clothing textile fabrics, high-end home textile fabrics, automotive interior fabrics and the like.
(3) According to the production method of the colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness, the high light fastness coloring master batch is added through the weight-loss type feeding machine metering and compounding system, the metering is accurate, the fiber is dyed when being spun, the color difference in a filament batch is zero, no waste water, waste gas or waste residue is generated in the production process, and the subsequent product does not need to be dyed, so that the production method is environment-friendly.
(4) The 33-333 dt/12-288 f colored polyester high-shrinkage fully drawn yarn with high light fastness produced by the method is used for weaving the fabric without the common defects of warp knitting fabrics such as warp strips, broken yarns, broken balls and the like, and is popular with fabric manufacturers.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a process flow chart of the production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A production method of colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps:
s1, pre-crystallizing PET (polyethylene terephthalate) slices at 158 ℃ for 30 minutes, and drying at 168 ℃ until the water content of the slices is not more than 30 ppm;
s2, putting the coloring master batch into a master batch drying kettle, and drying at 116 ℃; adjusting the material level not to exceed 70% of the volume of the master batch drying kettle, and ensuring that the retention and drying time of the coloring master batch is more than or equal to 12 hours; the coloring master batch is pre-crystallized before leaving the factory by a supplier and can be directly dried;
s3, uniformly mixing the pre-crystallized and dried PET slices in the step S1 and the dried coloring master batches in the step S2 by using a weight-loss feeder metering and mixing system to obtain a mixed material, wherein the mass ratio of the coloring master batches to the PET slices is 3: 97, a stabilizer; correcting the metering and compounding system for at least 2 times, adjusting the mass percentages of the master batches and the slices on line, metering and ensuring that the flow error of the metering and compounding system is less than or equal to 1%; during spinning, the color is compared with a seal sample and a batch sample according to a standard gray card;
s4, carrying out melt spinning on the mixed material through a spinning screw rod; the spinning process comprises the following steps: adjusting the temperature of each extrusion area of the spinning screw to 245-285 ℃, wherein the spinning temperature is 282 ℃, heating and heat preservation are carried out by adopting biphenyl steam, the temperature of the biphenyl steam is controlled to be 282 ℃, the diameter of a spinning assembly is 90mm, the assembly adopts 80-100 meshes of metal filter sand, the initial pressure of the spinning assembly is controlled to be 12.5MPa, the number of holes of a spinneret plate is 48, and the diameter of the spinneret hole is 0.22 mm; the spinning adopts a one-to-two process, namely the spinning is divided into two parts by taking the center line of a spinneret plate as a boundary, and each strand of yarn contains 24 yarns;
s5, cooling the yarns obtained by spinning in a side blowing mode, wherein the side blowing temperature is 27 ℃ in spring and summer, and the humidity is 85%; the temperature of the side air blowing is 22 ℃ in autumn and winter, and the humidity is 75%; in order to reduce batch of balls and filaments during fabric weaving, the blowing speed is controlled at 0.45m/min, and the air pressure is controlled at 550 Pa;
s6, quantitatively conveying an oil agent to an oil nozzle by an oil agent pump to oil the yarn, wherein the rotating speed of the oil agent pump is controlled at 25 Hz/min; wherein: the oil agent is selected from bamboo oil agent with the brand number of F-1048 and the concentration of the oil agent of 12 percent;
s7, pre-networking, hot-roll drawing, main networking and winding are carried out on the yarn after oiling to obtain 33dt/24f colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness; wherein the hot roller drawing comprises a first godet roller drawing and a second godet roller drawing and shaping process (namely, the second godet roller is mainly used for heat shaping) in sequence, the speed of the first godet roller is 1800m/min, the temperature of the first godet roller is 86 ℃, the speed of the second godet roller is 4250m/min, and the temperature of the second godet roller is 95 ℃; the winding speed is 4600 m/min; in order to ensure the weaving performance of the FDY yarns, a pre-network and a main network are used for carrying out network processing on the FDY yarns in the production process, so that the cohesion of the yarns is increased.
The process flow of the production of the colored polyester high-shrinkage fully drawn yarn with high light fastness of the example 1 is shown in figure 1.
Example 2
A production method of colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps:
s1, pre-crystallizing the PET slices at 160 ℃ for 15 minutes, and then drying the PET slices at 172 ℃ until the water content of the PET slices is not more than 30 ppm;
s2, putting the coloring master batch into a master batch drying kettle, and drying at 118 ℃; adjusting the material level not to exceed 70% of the volume of the master batch drying kettle, and ensuring that the coloring master batch stays for drying for not less than 12 hours;
s3, uniformly mixing the PET slices and the coloring master batches by adopting a weightlessness type feeder metering and mixing system to obtain a mixed material, wherein the mass ratio of the coloring master batches to the PET slices is 2.5: 97.5; correcting the metering and compounding system for at least 2 times, adjusting the mass percentages of the master batches and the slices on line, metering and ensuring that the flow error of the metering and compounding system is less than or equal to 1%;
s4, carrying out melt spinning on the mixed material through a spinning screw rod; the spinning process comprises the following steps: adjusting the temperature of each extrusion area of the spinning screw to 245-290 ℃, wherein the spinning temperature is 285 ℃, biphenyl steam is adopted for heating and heat preservation, the temperature of the biphenyl steam is controlled to be 282 ℃, the diameter of a spinning assembly is 95mm, the assembly adopts 60-80 mesh metal filter sand, the initial pressure of the spinning assembly is controlled to be 12MPa, the number of holes of a spinneret plate is 24, and the diameter of the spinneret hole is 0.25 mm;
s5, cooling the yarns obtained by spinning in a side blowing mode; the temperature of the side air blowing in spring and summer is 25 ℃, and the humidity is 80%; the temperature of the side air blowing is 20 ℃ in autumn and winter, and the humidity is 70%; in order to reduce batch of balls and filaments during fabric weaving, the blowing speed is controlled at 0.55m/min, and the air pressure is controlled at 600 Pa;
s6, quantitatively conveying an oil agent to an oil nozzle by an oil agent pump to oil the yarn, wherein the rotating speed of the oil agent pump is controlled at 30 Hz/min; wherein: the oil agent is selected from bamboo oil agent with the brand number of F-1048 and the concentration of the oil agent of 16 percent;
s7, pre-networking, hot-roll stretching, main networking and winding are carried out on the yarn after oiling to obtain 167dt/48f colored polyester high-shrinkage Fully Drawn Yarn (FDY) with high light fastness; wherein the hot roller drawing comprises a first godet roller drawing and a second godet roller drawing and shaping process in sequence, the speed of the first godet roller is 1750m/min, the temperature of the first godet roller is 88 ℃, the speed of the second godet roller is 4550m/min, and the temperature of the second godet roller is 98 ℃; the winding speed is 4500 m/min; in order to ensure the weaving performance of the FDY yarns, a pre-network and a main network are used for carrying out network processing on the FDY yarns in the production process, so that the cohesion of the yarns is increased.
Example 3
A production method of colored polyester high-shrinkage fully drawn yarn with high light fastness comprises the following steps:
s1, pre-crystallizing the PET slices at 155 ℃ for 20 minutes, and then drying the PET slices at 170 ℃ until the water content of the PET slices is not more than 30 ppm;
s2, putting the coloring master batch into a master batch drying kettle, and drying at 115 ℃; adjusting the material level not to exceed 70% of the volume of the master batch drying kettle, and ensuring that the coloring master batch stays for drying for not less than 12 hours;
s3, uniformly mixing the PET slices and the coloring master batches by adopting a weightlessness type feeder metering and mixing system to obtain a mixed material, wherein the mass ratio of the coloring master batches to the PET slices is 5: 95; correcting the metering and compounding system for at least 2 times, adjusting the mass percentages of the master batches and the slices on line, metering and ensuring that the flow error of the metering and compounding system is less than or equal to 1%;
s4, carrying out melt spinning on the mixed material through a spinning screw rod; the spinning process comprises the following steps: adjusting the temperature of each extrusion area of the spinning screw to be between 240 ℃ and 280 ℃, wherein the spinning temperature is 284 ℃, heating and heat preservation are carried out by adopting biphenyl steam, the temperature of the biphenyl steam is controlled to be 286 ℃, the diameter of a spinning assembly is 92mm, the assembly adopts 80-100 meshes of metal filter sand, the initial pressure of the spinning assembly is controlled to be 14MPa, the number of holes of a spinneret plate is 36, and the diameter of the spinneret hole is 0.25 mm;
s5, cooling the yarns obtained by spinning in a side blowing mode; the temperature of the side air blowing in spring and summer is 28 ℃, and the humidity is 90%; the temperature of the lateral blowing air is 25 ℃ in autumn and winter, and the humidity is 80%; in order to reduce batch of pompon and fuzz during fabric weaving, the blowing speed is controlled at 0.5m/min, and the air pressure is controlled at 500 Pa;
s6, quantitatively conveying an oil agent to an oil nozzle by an oil agent pump to oil the yarn, wherein the rotating speed of the oil agent pump is controlled at 20 Hz/min; wherein: the oil agent is selected from bamboo oil agent with the brand number of F-1048 and the concentration of the oil agent of 10 percent;
s7, pre-networking, hot-roll drawing, main networking and winding are carried out on the yarn after oiling to obtain the colored polyester high-shrinkage Fully Drawn Yarn (FDY) with 83dt/36f high light fastness; wherein the hot roller drawing comprises a first godet roller drawing and a second godet roller drawing and shaping process in sequence, the speed of the first godet roller is 1850m/min, the temperature of the first godet roller is 87 ℃, the speed of the second godet roller is 4600m/min, and the temperature of the second godet roller is 95 ℃; the winding speed is 4550 m/min; in order to ensure the weaving performance of the FDY yarns, a pre-network and a main network are used for carrying out network processing on the FDY yarns in the production process, so that the cohesion of the yarns is increased.
The above-mentioned preferred embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention. Obvious variations or modifications of the present invention are within the scope of the present invention.
Claims (10)
1. The production method of the colored polyester high-shrinkage fully drawn yarn with high light fastness is characterized by comprising the following steps:
s1, pre-crystallizing and drying the PET slices;
s2, drying the coloring master batch;
s3, uniformly mixing the pre-crystallized and dried PET slices obtained in the step S1 with the dried coloring master batches obtained in the step S2 to obtain a mixed material;
s4, carrying out melt spinning on the mixed material through a spinning screw;
s5, cooling the yarns obtained by spinning in a side blowing mode;
s6, oiling the cooled yarn;
s7, pre-meshing, hot roller stretching, main meshing and winding are carried out on the yarn after oiling to obtain the colored polyester high-shrinkage fully drawn yarn with high light-resistant color fastness.
2. The method for producing a colored polyester high-shrinkage fully drawn yarn with high lightfastness according to claim 1, wherein the step S1 of pre-crystallizing and drying the PET chip; wherein the pre-crystallization temperature is 155-160 ℃, and the pre-crystallization time is 8-30 minutes; the drying temperature is 165-175 ℃, and the drying is carried out until the water content of the slices is less than or equal to 30 ppm.
3. The method for producing the colored polyester high-shrinkage fully drawn yarn with high color fastness to light as claimed in claim 1, wherein the step S2 comprises the steps of putting the colored masterbatch into a masterbatch drying kettle for drying, wherein the drying temperature is 110 ℃ and 120 ℃, the material level is adjusted to be not more than 70% of the masterbatch drying kettle, and the retention time of the colored masterbatch is ensured to be not less than 12 hours.
4. The method for producing colored polyester high-shrinkage fully drawn yarn with high light fastness according to claim 1, wherein step S3 is carried out by uniformly mixing the pre-crystallized and dried PET chip of step S1 with the dried colored masterbatch of step S2 by a weight loss feeder metering and compounding system to obtain a mixed material; based on 100 of the total mass of the coloring master batch and the PET slices, the coloring master batch accounts for 1-12 wt%, and the flow error of a metering and compounding system is less than or equal to 1%.
5. The method for producing a colored polyester high-shrinkage fully drawn yarn with high lightfastness according to claim 1, wherein the step S4 is to melt-spin the mixed material by a spinning screw; the spinning process comprises the following steps: adjusting the temperature of each extrusion area of the spinning screw at 240-290 ℃, the spinning temperature at 280-285 ℃, heating and preserving heat by adopting biphenyl steam, controlling the temperature of the biphenyl steam at 280-286 ℃, the diameter of the spinning assembly at 90-95mm, adopting 60-80-100 mesh metal filter sand as the assembly, controlling the initial pressure of the spinning assembly at 12-14MPa, selecting 12-288 holes of the spinneret plate, and controlling the diameter of the spinneret hole at 0.22-0.28 mm.
6. The method for producing colored polyester high-shrinkage fully drawn yarn with high light fastness according to claim 1, wherein step S5 is to cool the spun yarn by a cross-air blowing method; the temperature of the cross air blowing is 20-29 ℃, the humidity is 70-90%, the air blowing speed is 0.4-0.6m/min, and the air pressure is controlled at 500-600 Pa.
7. The method for producing colored polyester high-shrinkage fully drawn yarn with high color fastness to light according to claim 6, wherein the yarn obtained by spinning is cooled by a cross-air blowing method; the temperature of the lateral blowing air in spring and summer is 25-29 ℃, and the humidity is 80-90%; the temperature of the lateral air blowing in autumn and winter is 20-25 deg.C, and the humidity is 70-80%.
8. The method for producing colored polyester high-shrinkage fully drawn yarn with high light fastness according to claim 1, wherein the step S6 is to deliver the oil agent to the oil nozzle by an oil agent pump in a fixed amount to oil the yarn, and the rotation speed of the oil agent pump is controlled to be 20-30 Hz/min.
9. The method for producing the colored polyester high-shrinkage fully drawn yarn with high light fastness according to claim 8, wherein the oiling agent is a bamboo oiling agent with the brand number of F-1048, and the concentration of the oiling agent is 9-16%.
10. The method for producing a colored polyester high-shrinkage fully drawn yarn with high light fastness according to claim 1, wherein the yarn is pre-networked, hot-roll drawn, primary networked and wound after oiling at step S7 to obtain a colored polyester high-shrinkage fully drawn yarn with high light fastness; wherein the hot roller drawing comprises a first godet roller and a second godet roller drawing process in sequence, the speed of the first godet roller is 1600-2000m/min, the temperature of the first godet roller is 85 +/-5 ℃, the speed of the second godet roller is 4200-4600m/min, and the temperature of the second godet roller is 100 +/-5 ℃; the winding speed was 4150-4650 m/min.
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