CN111647991A - Production process of fine denier high stretch yarn for improving subsequent manufacturing efficiency - Google Patents
Production process of fine denier high stretch yarn for improving subsequent manufacturing efficiency Download PDFInfo
- Publication number
- CN111647991A CN111647991A CN202010350757.9A CN202010350757A CN111647991A CN 111647991 A CN111647991 A CN 111647991A CN 202010350757 A CN202010350757 A CN 202010350757A CN 111647991 A CN111647991 A CN 111647991A
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- China
- Prior art keywords
- yarn
- fine denier
- high stretch
- yarns
- steps
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- D02G1/04—Devices for imparting false twist
- D02G1/08—Rollers or other friction causing elements
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
-
- 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
- D02G1/0286—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 characterised by the use of certain filaments, fibres or yarns
-
- 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
- D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
- D02G1/205—After-treatments for fixing crimp or curl
-
- 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
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
-
- 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
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
Abstract
The invention provides a production process of fine denier high stretch yarn for improving the subsequent manufacturing efficiency, which comprises the following steps: s1, taking pre-oriented yarn POY as a raw material, leading out the pre-oriented yarn POY from a raw yarn frame, conveying the pre-oriented yarn POY to an upper hot box through a yarn cutter, a roller and a twist stopper, and heating to obtain heat-treated yarn; s2, enabling the heat-treated yarns to enter a cooling plate through a yarn guide for cooling, and enabling the heat-treated yarns to enter a false twister through the yarn guide for twisting and untwisting to obtain false-twisted yarns; and S3, enabling the false-twisted yarns to enter a second roller, a netlike device and an auxiliary roller through a yarn guide to obtain interlaced yarns, then entering a lower hot box, entering an oil tanker for oiling, and winding and forming to obtain the DTY high stretch yarns. The process can meet the requirement of weaving for elastic shrinkage, homogeneous network and raised stability, and has high product quality and high production efficiency.
Description
Technical Field
The invention relates to the technical field of elasticizing process production, in particular to a production process of fine denier high stretch yarn for improving the subsequent manufacturing efficiency.
Background
With the increasing popularity of the textile industry and the fine denier terylene interlaced yarns, the fine denier high elastic yarns have the unique fabric style, and the fabric has the advantages of small monofilament fineness, strong contractibility, difficult deformation and good fabric hand feeling, can be independently woven, and can also be interwoven with silk, cotton and the like to form the unique fabric style. Therefore, the fabric is suitable for various high-grade textile and silk products, and meets the requirements of consumers on comfort and high grade.
Due to the small size and the large number of the monofilaments, the product quality of the texturing machine is not easy to control in the production process, the large number of the battings, the jumping of the heat box groove and the poor network uniformity easily occur, the large number of the knotted battings and the unstable shrinkage elasticity easily occur in the back warp drawing and weaving process, and the problems of weft stop, poor dyeing property, large batting of a machine table yarn guide and the like exist when weft yarns are made. Wherein the elasticity of shrinkage and the uniformity of the network directly affect the quality of the finished product and the style of the subsequent fabric.
Therefore, aiming at the problems in the prior art, the problems of poor elasticity of shrinkage, poor network uniformity and poor dyeing property are solved by a new process production scheme through technical research so as to improve the subsequent weaving efficiency.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to solve the problems in the prior production process technology and provides a production process which can meet the requirements of shrinkage elasticity and network uniformity of weaving and can also increase the stability of the weaving.
The technical scheme is as follows: a production process of fine denier high stretch yarn for improving the subsequent manufacturing efficiency comprises the following steps:
s1, taking pre-oriented yarn POY as a raw material, leading out the pre-oriented yarn POY from a raw yarn frame, conveying the pre-oriented yarn POY to an upper hot box through a yarn cutter, a roller and a twist stopper, and heating to obtain heat-treated yarn;
s2, cooling the heat-treated yarn in a cooling plate through a yarn guide, and twisting and untwisting the heat-treated yarn in a false twister through the yarn guide to obtain false twisted yarn;
and S3, enabling the false-twisted yarns to enter a second roller, a netlike device and an auxiliary roller through a yarn guide to obtain interlaced yarns, then entering a lower hot box, entering an oil tanker for oiling, and winding and forming to obtain the DTY high elastic yarns.
Further, the temperature of the upper heat box in the step S1 is set to 155-.
Further, the combination of the false twister in the step S2 is 1-4-1 polyurethane PU disk, and the D/Y ratio is 1.5-1.7.
Further, the speed of the steel roller of the two rollers in the step S3 is 750-800 m/min.
Further, the pressure of the network device in the step S3 is 1.9-2.4bar, and the number of network nodes is greater than 150/m.
Further, the temperature of the lower hot box in the step S3 is 30 to 40 ℃.
Further, the amount of oil on the wheel in step S3 is 2.8-3.3.
Has the advantages that: the method ensures the neutrality and stability of the crimp shrinkage rate and the uniformity of the whole dyeing body through the optimal value selection of the deformation temperature; the network fastness and the number of the network nodes are increased by more than 150 network nodes per meter, so that the problems of uneven dyeing and weft stop caused by easy scattering of the network in the textile are solved. The rotation of the yarn guide improves the frictional resistance between the yarn and the yarn guide, and solves the problem of the catkin.
Detailed Description
The invention provides a production process of 33dtex/48f fine denier high elastic yarn for improving the subsequent manufacturing efficiency, and the specific implementation mode comprises the following steps:
s1, taking pre-oriented yarn POY as a raw material, leading out the pre-oriented yarn POY from a raw yarn frame, conveying the pre-oriented yarn POY to an upper hot box through a yarn cutter, a roller and a twist stopper, and heating to obtain heat-treated yarn;
because the production of the differential fine denier yarn considers the factors of raw material characteristics, spinnability and finished product quality and has higher requirements on each part of equipment, the friction resistance of each part is increased due to overhigh speed, the breakage rate is increased, the production cost is high, the finished product quality is reduced, the network degree is reduced along with the reduction of the friction resistance, the retention time of the yarn in a hot box is ensured not to exceed 0.2s, the speed of a steel rod of two rollers in the next process is comprehensively considered to be 750-800m/min, and the preferred speed is 770-800 m/min; before being conveyed to an upper heating box to be heated, the stretching times are initially determined according to the fineness of POY and DTY, the stretching times DR is too large, broken filaments are increased, and the finished product is reduced; on the contrary, tight spots and semi-stiff silks appear, the dyeing is not uniform, the DR is 1.6-1.8, and the preferred setting is 1.695-1.710; meanwhile, by considering the properties, the size of fineness, the length of a deformation hot box, the processing speed and other factors of the POY, the orientation degree of a POY macromolecular chain can generate a series of changes under the state of thermal deformation, when the upper hot box H1 is too low, the orientation degree of the molecule is reduced, color absorption is easy to generate unevenness and lack of elasticity, the dyeing property of a finished product is poor, and the shrinkage property pursued by a high stretch yarn customer cannot be realized; on the contrary, the high-elasticity rubber has the advantages that the tight spots are easy to occur, the hand feeling is rough, the broken filaments are increased, the optimal H1 is set to 155-;
s2, cooling the heat-treated yarn in a cooling plate through a yarn guide, and twisting and untwisting the heat-treated yarn in a false twister through the yarn guide to obtain false twisted yarn;
the combination of the false twister is a 1-4-1 polyurethane PU disc, the D/Y ratio is 1.5-1.7, the D/Y ratio is increased, the friction speed is increased, the twist is increased, the increase of the torque of the interlaced yarn is beneficial to increasing the contractibility of the interlaced yarn, the T2 with the overlarge D/Y ratio has the advantages of reduced tension, easy untwisting unevenness and increased broken yarn, the optimal D/Y ratio is set to be 1.56, and the problem of easy knotting caused by the groove skipping of the yarn with overlarge torque and the weaving process is effectively solved; the pore diameter of the spray core of the network device is 1.1mm, the pressure of the network device is 1.9-2.4bar, and the optimal pressure is 2.0bar-2.4 bar. The number of network nodes per meter of strand silk is more than 150, the network fastness is strong, and the network nodes are not easy to be scattered under the action of 4cN-6cN tension in the weaving process, so that the problems of subsequent dyeing unevenness and cloth cover weft stop are avoided;
s3, enabling the false-twisted yarns to enter a second roller, a netlike device and an auxiliary roller through a yarn guide to obtain interlaced yarns, then entering a lower hot box, entering an oil tanker for oiling, and winding and forming to obtain DTY high elastic yarns;
the oil adding amount of the DTY is 2.8-3.3, the prior oil adding amount is 2.0-2.5%, preferably 3.0-3.3%, the integral cohesion and antistatic property of the strand silk are increased, and the problems of no sticking and no unwinding and more flocks in the weaving process in the subsequent unwinding process are effectively improved; the overfeeding rate is mainly used for adjusting the tension of the network yarn in the network device to ensure the number and the firmness of network points, and test results prove that the upper and lower tensions of the network device are between 1.0cN and 2.0cN, the effect of the network is best by the strand silk, the tension of the network device is too large, the network is not easy to be screened, and the number and the firmness of the network per meter are correspondingly reduced; on the contrary, the yarn is easy to float and break, and simultaneously, the yarn is easy to wind each steel roller, which is not beneficial to stable production. Two overfeeding-3.70% three overfeeding-4.70% four overfeeding-3.95%.
Table 1 shows the DTY test indexes of the embodiment of the invention
Table 2 shows the POY test indexes of the embodiment of the present invention
Table 3 shows the effect of the speed of the two-roller steel roller on the DTY breakage rate and the effect of DR on the broken and stiff yarns of the finished product.
Claims (7)
1. A production process of fine denier high stretch yarn for improving the subsequent manufacturing efficiency is characterized by comprising the following steps:
s1, taking pre-oriented yarn POY as a raw material, leading out the pre-oriented yarn POY from a raw yarn frame, conveying the pre-oriented yarn POY to an upper hot box through a yarn cutter, a roller and a twist stopper, and heating to obtain heat-treated yarn;
s2, cooling the heat-treated yarn in a cooling plate through a yarn guide, and twisting and untwisting the heat-treated yarn in a false twister through the yarn guide to obtain false twisted yarn;
and S3, enabling the false-twisted yarns to enter a second roller, a netlike device and an auxiliary roller through a yarn guide to obtain interlaced yarns, then entering a lower hot box, entering an oil tanker for oiling, and winding and forming to obtain the DTY high elastic yarns.
2. The process for producing fine denier high stretch yarn according to claim 1, wherein the process comprises the following steps: the temperature of the upper heating box in the step S1 is set to 155 ℃ and 185 ℃, and before the upper heating box is conveyed to be heated, the drafting multiple is 1.6-1.8.
3. The process for producing fine denier high stretch yarn according to claim 1, wherein the process comprises the following steps: the combination of the false twister in the step S2 is 1-4-1 polyurethane PU disk, and the D/Y ratio is 1.5-1.7.
4. The process for producing fine denier high stretch yarn according to claim 1, wherein the process comprises the following steps: the speed of the steel roller of the two rollers in the step S3 is 750-800 m/min.
5. The process for producing fine denier high stretch yarn according to claim 1, wherein the process comprises the following steps: in the step S3, the pressure of the network device is 1.9-2.4bar, and the number of network nodes is more than 150/m.
6. The process for producing fine denier high stretch yarn according to claim 1, wherein the process comprises the following steps: the temperature of the lower hot box in the step S3 is 30-40 ℃.
7. The process for producing fine denier high stretch yarn according to claim 1, wherein the process comprises the following steps: the amount of oil on the oil wheel in the step S3 is 2.8-3.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350757.9A CN111647991A (en) | 2020-04-28 | 2020-04-28 | Production process of fine denier high stretch yarn for improving subsequent manufacturing efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350757.9A CN111647991A (en) | 2020-04-28 | 2020-04-28 | Production process of fine denier high stretch yarn for improving subsequent manufacturing efficiency |
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| Publication Number | Publication Date |
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| CN111647991A true CN111647991A (en) | 2020-09-11 |
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| CN202010350757.9A Pending CN111647991A (en) | 2020-04-28 | 2020-04-28 | Production process of fine denier high stretch yarn for improving subsequent manufacturing efficiency |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746363A (en) * | 2020-12-28 | 2021-05-04 | 江苏恒力化纤股份有限公司 | Method for improving POY (pre-oriented yarn) tail passing rate |
| CN116024714A (en) * | 2023-02-17 | 2023-04-28 | 江苏德力化纤有限公司 | Preparation method of untwisted sizing-free polyester warp yarn |
| CN116657301A (en) * | 2023-06-02 | 2023-08-29 | 浙江古纤道股份有限公司 | Processing method of gear deformation wire |
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Cited By (4)
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|---|---|---|---|---|
| CN112746363A (en) * | 2020-12-28 | 2021-05-04 | 江苏恒力化纤股份有限公司 | Method for improving POY (pre-oriented yarn) tail passing rate |
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| CN116024714A (en) * | 2023-02-17 | 2023-04-28 | 江苏德力化纤有限公司 | Preparation method of untwisted sizing-free polyester warp yarn |
| CN116657301A (en) * | 2023-06-02 | 2023-08-29 | 浙江古纤道股份有限公司 | Processing method of gear deformation wire |
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Application publication date: 20200911 |
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