WO2021097886A1

WO2021097886A1 - Polyester imitation cotton yarn-dyed fabric, and manufacturing method and use therefor

Info

Publication number: WO2021097886A1
Application number: PCT/CN2019/121549
Authority: WO
Inventors: 刘子斌; 刘德铭; 沈乾峰; 王家宾; 路静静; 邢成利; 李文豪
Original assignee: 鲁泰纺织股份有限公司
Priority date: 2019-11-20
Filing date: 2019-11-28
Publication date: 2021-05-27
Also published as: CN110699826A; JP7433332B2; JP2022519899A; CN110699826B; US20220275576A1

Abstract

A polyester imitation cotton yarn-dyed fabric, and a manufacturing method and use therefor, pertaining to the technical field of textiles. The polyester imitation cotton yarn-dyed fabric is comprised of interwoven warp yarns and weft yarns. The warp yarn is core spun yarn in which dyed polyester is used as a cladding layer and low-temperature spandex is used as core yarn, the weight ratio of the polyester and the low-temperature spandex is 4-49:1, and the polyester forms a corroded surface by means of alkali weight reduction processing. The polyester imitation cotton yarn-dyed fabric has a good cotton feel, high elasticity, high color fastness and a low degree of ironing-induced shrinkage. The yarn-dyed fabric can be used in the manufacture of high-quality garments, especially in the manufacture of shirts. The manufacturing method for the yarn-dyed fabric conserves energy and reduces emissions, and produces a novel polyester yarn-dyed fabric having a low degree of ironing-induced shrinkage, high color fastness, and a feel that imitates that of cotton. The yarn-dyed fabric can be used in the manufacture of clothing such as shirts in order to increase the selectivity and functionality thereof.

Description

Polyester cotton-like yarn-dyed fabric, and manufacturing method and application thereof

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on November 20, 2019, the application number is 201911140910.9, and the invention title is "a polyester imitation cotton yarn-dyed fabric, and its manufacturing method and application". All of them The content is incorporated in this application by reference.

Technical field

The application relates to a polyester cotton-like yarn-dyed fabric, and a manufacturing method and application thereof, belonging to the technical field of textiles.

Background technique

Yarn-dyed weaving is a process of weaving yarn or filaments after dyeing. It is divided into full-dyed weaving and half-dyed weaving. It refers to the process of dyeing yarn or filament first, and then weaving with dyed yarn. Method, this kind of fabric is called "dyed fabric". Yarn-dyed fabrics are dyed with yarn first, then weaves, and finally finished; piece dyeing is to put the original color grey fabric into the dyeing vat for jig dyeing (or long-car pad dyeing), and then finishing. Woven cotton-like polyester is relatively mature in piece dyeing, and there is no precedent in yarn-dyed weaving.

Woven polyester yarn-dyed fabrics are divided into warp twisting and warp sizing from the weaving process. Both warp twisting and sizing are to solve weaving problems. The quality of untwisted and unsizing weaving is unqualified and there is no output. The existing twisted yarn-dyed fabric can be directly shaped, but after the polyester is twisted, the hand feel is rough and hard, and there is no cotton feeling. After sizing, desizing is required. The poor color fastness of polyester colored yarn is a world-class problem. The main difficulty of sizing and desizing polyester colored yarn is the completeness of desizing and the protection of color. The existing desizing process is open-width washing. Desizing is a protective desizing, and the desizing is endless, so the yarn-dyed fabric surface does not feel cottony. There has been no good plan for the desizing process on yarn-dyed fabrics. How to completely remove the size of the yarn-dyed fabric, have a cottony feel, and protect the accuracy and vividness of the color at the same time is an urgent problem to be solved.

When woven polyester yarn-dyed fabrics are used in the manufacture of high-quality clothing such as shirts, they need to have comfort, shape retention and color stability.

Summary of the invention

In order to solve the above problems, a polyester imitation cotton yarn-dyed fabric and its manufacturing method and application are provided. The polyester imitation cotton yarn-dyed fabric has good cotton feel, high elasticity, high color fastness and low ironing shrinkage. The yarn-dyed fabric is suitable for the production of high-quality clothing, especially for the production of shirts. The manufacturing method of the yarn-dyed fabric saves energy and reduces emissions, and a new type of polyester yarn-dyed fabric with low ironing shrinkage, high color fastness and cotton-like hand feeling is prepared. The yarn-dyed fabric is used in the production of clothing such as shirts to increase its selectivity and functionality.

According to one aspect of the present application, a yarn-dyed fabric is provided, which has good cotton feel, high elasticity, high color fastness and low ironing shrinkage.

The yarn-dyed fabric is formed by interweaving warp yarns and weft yarns, and is characterized in that the warp yarns are core-spun yarns with dyed polyester as the covering layer and low-temperature spandex as the core yarn, and the weight ratio of the polyester and the low-temperature spandex is 4-49:1, the polyester fiber forms an eroded surface through alkali reduction treatment.

Further, the weight ratio of the polyester to the low-temperature spandex is 10-30:1. Preferably, the weight ratio of the polyester to the low-temperature spandex is 10-15:1. More preferably, the weight ratio of the polyester to the low-temperature spandex is 13-14:1.

Optionally, the fineness of the low-temperature spandex is 20D-40D, and the core-spun yarn is made by a polyester and low-temperature spandex machine-packing process, the twist is 5-8 twists/cm, and the raft ratio is 2.5-3.5. Preferably, the upper limit of the fineness range of the low temperature spandex is selected from 25D, 30D or 35D, and the lower limit is selected from 25D, 30D or 35D. Preferably, the twist is 5-6 twists/cm, and the rabbi is 3. Low-temperature spandex with a twist lower than 5 twists/cm will affect the yarn-dyed fabric surface, and the yarn-dyed fabric surface with a twist higher than 8 twists/cm will increase the roughness and feel unqualified.

Optionally, the low-temperature spandex is dyed or undyed, and the dye used when the low-temperature spandex is dyed is a high-temperature, water-washable and alkali-resistant disperse dye.

Use low-temperature spandex to reduce the temperature required for styling and control the ironing shrinkage. The use of low-temperature spandex can reduce the temperature and time of setting, control the sublimation of disperse dyes of colored yarns, improve the color fastness of yarn-dyed fabrics, and save energy and reduce emissions.

Optionally, the reduction rate of the polyester fiber through alkali reduction treatment is not higher than 5%. Preferably, the reduction rate of the polyester fiber through alkali reduction treatment is 1%-3%.

Optionally, the polyester is selected from at least one of polyester filaments, polyester composite fibers and polyester staple fibers.

Preferably, the polyester filament is selected from at least one of stretch textured yarn DTY, fully drawn yarn FDY, air textured yarn ATY and high elastic yarn; the polyester composite fiber includes elastic composite polyester fiber T400, and Polyester staple fibers include cotton-like polyester.

More preferably, the polyester is a polyester with an F number of not less than 24. Further, the polyester is a high F-number matting polyester DTY. The yarn-dyed fabric produced by this polyester setting method has a strong cotton feel.

Preferably, the weft yarn is selected from at least one of polyester, spandex, cotton yarn and the same composition as the warp yarn. More preferably, the weft yarn is selected from the same composition as the warp yarn, polyester DTY, FDY, ATY, high elastic yarn, T400, and other cotton-like polyester. Further, the weft yarn includes 75D/72F matte polyester DTY.

Preferably, the dye used for dyeing the polyester is a high-temperature, water-washable and alkali-resistant disperse dye, and the dyeing temperature of the dye is 130±5°C. More preferably, the dye includes DyStar's high-temperature, water-washable and alkali-resistant disperse dyes. The dyeing time of polyester is 30-60min. The setting of the dyeing time makes the polyester fully open and open the fiber network points of the polyester.

Optionally, the color fastness of the yarn-dyed fabric measured according to GB/T3920-2008 is not lower than Grade 4. Preferably, the color fastness of the yarn-dyed fabric according to GB/T3920-2008 is not lower than Grade 5.

Optionally, the color fastness of the yarn-dyed fabric measured according to GB/T 5718-1997 "Textile color fastness test to dry heat (except hot pressing) color fastness" is not lower than level 4. Preferably, the color fastness of the yarn-dyed fabric measured according to GB/T 5718-1997 "Textile color fastness test to dry heat (except hot pressing) color fastness" is not lower than grade 5.

Optionally, the ironing shrinkage rate of the yarn-dyed fabric treated for 6 times at 170°C and 15s is not higher than 3%. The ironing shrinkage rate control fully ensures the comfort of the elastic fabric, and the low temperature spandex helps to control the elasticity The ironing shrinkage of the fabric.

According to another aspect of the present application, there is provided a manufacturing method of any one of the above-mentioned polyester cotton-like yarn-dyed fabrics. The manufacturing method of the yarn-dyed fabrics saves energy and reduces emissions, and has low ironing shrinkage and high color A new polyester yarn-dyed fabric with cotton-like fastness and feel.

The manufacturing method of the polyester cotton-like yarn-dyed fabric includes the following steps:

1) Interweaving the provided weft yarn and sizing warp yarn to make a thick yarn-dyed fabric;

2) The first desizing: the coarse yarn-dyed fabric undergoes continuous desizing in the desizing mixture I. The temperature of the first desizing is 91-91.5℃ and the time is not more than 20min. The desizing mixture I includes 2-3wt% strong Alkali and 2-3wt% desizing agent;

3) Predetermined type: the temperature of predetermined type is 180-200℃;

4) The second desizing: Desizing is carried out by batch desizing mixture Ⅱ, the temperature of the second desizing is 60-90℃ and the time is not more than 45min, the desizing mixture Ⅱ includes 2-5wt% strong alkali and 2 -5wt% insurance powder;

5) Shaping: the temperature of shaping is 100-140°C, and the yarn-dyed fabric is prepared;

Wherein, the warp yarn includes a core-spun yarn with dyed polyester yarn as the covering layer and low-temperature spandex as the core yarn; and the sizing sizing agent includes acrylic sizing agent.

Optionally, the dye used in the dyed polyester is a high-temperature, water-washable and alkali-resistant disperse dye. Preferably, the dyeing temperature is 130±5°C. The dyeing time of polyester is 30-60min. The setting of the dyeing time makes the polyester fully open and open the fiber network points of the polyester.

Preferably, the fineness of the low-temperature spandex is 20D-40D, and the core-spun yarn is made of polyester and low-temperature spandex machine-packing process, with a twist of 5-8 twists/cm, and a raster ratio of 2.5-3.5. More preferably, the twist is 5-6 twists/cm, and the rabbi is 3.

Preferably, the sizing temperature is 130±5°C, and the sizing temperature is low-temperature sizing. More preferably, the concentration of the slurry is 10-15 wt%, and the vehicle speed of the sizing is 40-50 m/min. Further preferably, the concentration of the slurry is 12 wt%, and the vehicle speed of the sizing is 45 m/min. The slurry concentration is low, which can be used for high-quality weaving and convenient for finishing and desizing. The sizing process is the warping of the slitting machine to make the weaving shaft, and the weaving shaft is reversed to sizing. The sizing process saves time and reduces errors.

Preferably, the loom used for weaving is a water jet loom. Chemical fiber products use water jet looms, which have less electrostatic influence than air jet looms. Water also has a certain swelling effect on the slurry, and some of the slurry will fall off early during the weaving process.

Preferably, the continuous desizing is desizing using a long-car desizing machine, the first desizing temperature is set to 91° C., the desizing vehicle speed is 40-50 m/min, and the first desizing time is not more than 15 minutes. The first desizing temperature is lower than 91℃, the desizing rate is low, and it will stain obvious when it is higher than 91.5℃. The first desizing can remove most of the size, realize the pre-shrinkage of the yarn-dyed fabric, and make the color Color preservation of woven fabric.

Preferably, the predetermined vehicle speed is 30-40 m/min. In the first desizing, it has the function of preshrinking. After the first desizing, the pre-sizing is performed to make the fabric have shape retention.

Preferably, the intermittent desizing is in-tank water washing. The temperature of the second desizing is 70° C. and the time is not more than 15 minutes, and the desizing mixture II includes 4 to 5 wt% of strong alkali and 4 to 5 wt% of sodium hydroxide. The desizing mixture II also includes 0.5-2g/L degreasing agent. The second desizing step includes washing the desizing mixture II and the yarn-dyed fabric with water once, adding 0.5-2 g/L of hydrophilic softener, washing once with water, and draining water twice or until the draining water is clean. The second desizing can reduce and wash the yarn-dyed fabric with water, which can completely remove the size of the yarn-dyed fabric, and also performs alkali reduction corrosion on the polyester in the yarn-dyed fabric to improve the cotton feel.

Preferably, the shaped vehicle speed is 30-50m/min. The final setting is to further shape the yarn-dyed fabric. The setting temperature of the finalizing is 100-140℃, which is a low-temperature setting, which is beneficial to control the color retention, ironing rate and feel of the yarn-dyed fabric.

Optionally, the strong base is selected from at least one of potassium hydroxide, sodium hydroxide, lithium hydroxide and sodium carbonate. Preferably, the strong base is sodium hydroxide.

Optionally, a predetermined type auxiliary agent I is added to the predetermined type, and the predetermined type auxiliary agent I includes a dry hand feeling auxiliary agent and acetic acid. Preferably, the dry feel assistant includes an antibacterial assistant. More preferably, the antibacterial auxiliary agent is a zinc ion antibacterial agent. Further preferably, the predetermined auxiliary agent I includes 2wt‰ zinc ion antibacterial agent and 4wt‰ acetic acid. Acetic acid can neutralize part of the residual lye from desizing. Chemical fiber shirt fabrics need moisture absorption and sweat wicking function. During the process of perspiration, there will be a large amount of human metabolic waste remaining in the fabric. Microorganisms and bacteria are easy to breed. One is the skin health is affected, and the other is that microorganisms and bacteria are easy to grow during the growth process. Stink, so need to add antibacterial agent The functional auxiliary agent in the prior art is added in the shaping step, and the addition of the dry hand feel auxiliary agent in the predetermined shaping step of the present application improves the dry performance of the yarn-dyed fabric.

Optionally, a styling auxiliary agent II is added in the styling, and the styling auxiliary agent II includes a smooth hand feeling auxiliary agent. Preferably, the slippery feel aid includes a moisture absorbing and perspiration agent and/or a softening agent. More preferably, the smooth hand feeling aid includes 3% by weight moisture absorption and perspiration agent and 3% softener, and the styling aid II also includes an antibacterial agent at a concentration of 2% by weight. The styling aid II can make the yarn-dyed fabric maintain cotton-like feel and functionality.

According to another aspect of the present application, a garment is provided, and the yarn-dyed fabric is used in the production of garments such as shirts to increase its selectivity and functionality.

The garment is made of a yarn-dyed fabric, and the yarn-dyed fabric is selected from at least one of the yarn-dyed fabrics described above and the yarn-dyed fabrics manufactured by any of the methods described above.

In this application, the color fastness to soaping determined by the D(4) method in the GB/T3920-2008 "Textile color fastness test to soaping color fastness" is the same as GB/T3920-2008 "Textile color fastness to soaping". Test color fastness to rubbing" Color fastness to rubbing measured.

The beneficial effects of this application include but are not limited to:

1. The polyester cotton-like yarn-dyed fabric according to this application has good cotton feel, high elasticity, high color fastness and low ironing shrinkage. The yarn-dyed fabric is suitable for the production of high-quality clothing, especially for the production of shirts .

2. According to the manufacturing method of the yarn-dyed fabric of the present application, with the energy saving and emission reduction, a new type of polyester yarn-dyed fabric with low ironing shrinkage, high color fastness and cotton-like texture is produced.

3. According to the clothing of the present application, the yarn-dyed fabric is used in the production of clothing such as shirts to increase its selectivity and functionality.

Detailed ways

The present application will be described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

Unless otherwise specified, the raw materials and catalysts in the examples of the present application are all purchased through commercial channels.

The analysis method in the embodiment of this application is as follows:

1. Dyeing fastness

Color fastness to soaping: Refer to method D(4) in GB/T3920-2008 "Textile color fastness test color fastness to soaping".

Color fastness to rubbing: Refer to GB/T3920-2008 "Textile color fastness test for rubbing color fastness".

Color fastness to sublimation: Refer to GB/T 5718-1997 "Textile color fastness test for color fastness to dry heat (except hot pressing)" to determine.

2. Ironing shrinkage: Yarn-dyed fabrics are tested for ironing shrinkage at 170℃ and 15s for 6 times.

3. Elasticity test standard: FZ/T01034 "Test Method for Tensile Elasticity of Textile Woven Fabrics".

4. Cotton feeling: judged according to 10 people's touch feeling on polyester imitation cotton yarn-dyed fabric:

Excellent: soft, elastic, and strong sense of thickness; good: with some smoothness and drape; poor: strong paper feel or strong sense of roughness.

According to an embodiment of the present application, the manufacturing method of polyester cotton-like yarn-dyed fabric includes the following steps:

1) Interweaving the provided weft yarn and the sizing warp yarn to obtain a thick yarn-dyed fabric, the warp yarn comprising: a core-spun yarn with dyed polyester yarn as the covering layer and low-temperature spandex as the core yarn, and the sizing slurry includes Acrylic slurry;

3) Predetermined type: the temperature of predetermined type is 180-200℃;

5) Shaping: the temperature of shaping is 100-140°C to obtain the yarn-dyed fabric.

Example 1 Yarn-dyed fabric 1#

1) A. Provide raw materials: provide polyester and low-temperature spandex with a weight ratio of 13.5:1, polyester is 75D/72F matte polyester DTY, and low-temperature spandex is a new type of low-temperature spandex with 30D fineness;

B. Dyeing of polyester: DyStar's high-temperature, water-resistant and alkali-resistant disperse dyes are used to dye polyester at 130℃, and the dyeing time for polyester is 40min;

C. Preparation of warp yarn and weft yarn: dyed polyester is used as the covering layer and low-temperature spandex is used as the core yarn to produce core-spun yarn using machine-coated technology, with a twist of 5-6 twists/cm and a rabbi of 3;

D. Warp yarn sizing: use acrylic sizing agent with a slurry concentration of 12wt%, sizing the core-spun yarn at 130°C, making weaving shafts for warping by the slitting machine, and sizing the weaving shafts in reverse shaft sizing. The sizing speed is 45 meters/minute;

E. Weaving: the warp and weft are interwoven with a water jet loom to make a thick yarn-dyed fabric;

2) The first desizing: the coarse yarn-dyed fabric goes through the desizing mixture I continuous desizing (long car desizing), the temperature is 91-91.5℃ and the time is not more than 20min, the vehicle speed is 45 m/min, the desizing mixture Ⅰ Including 2-3wt% strong alkali and 2-3wt% desizing agent, the desizing agent can be desizing enzyme;

3) Predetermined type: Predetermined temperature is 190℃, vehicle speed is 35m/min; the first pass of the antibacterial agent with a concentration of about 2wt‰, increase the concentration of about 4wt‰ of acetic acid to neutralize the desizing residual lye;

4) The second desizing: through the desizing mixture Ⅱ intermittent desizing (washing in the tank), the second desizing temperature is 60-90℃ and the time is not more than 45min, the desizing mixture Ⅱ includes 2g/L hydrogen Sodium oxide, 2g/L sodium silicate and 1g/L degreaser, wash once with water, add 1g/L softener, wash once with water, bleed 2 times or until the bleed is clean;

5) Shaping: the shaping temperature is 140°C, the vehicle speed is 35 m/min, 2wt‰ concentration of antibacterial agent, 3% concentration of moisture wicking and 3% concentration of softener are added to obtain yarn-dyed fabric 1#.

Performance test: color fastness to soaping is grade 5, color fastness to rubbing is grade 5, color fastness to sublimation is grade 5; ironing shrinkage is not higher than 1%; cotton feel is excellent.

Example 2 Yarn-dyed fabric 2#, 3#

Yarn-dyed fabrics 2# and 3# were manufactured according to the method of Example 1. The difference from Example 1 is that the weight ratio of polyester and low-temperature spandex used in the warp yarns is 3 and 52 to make yarn-dyed fabrics 2# and 3#, respectively. The yarn-dyed fabric 2# has very poor elasticity and strength; the yarn-dyed fabric 3# has a hard hand feel, poor moisture absorption, and poor cotton feel.

Example 3 Yarn-dyed fabric 4#, 5#

Yarn-dyed fabrics 4# and 5# were manufactured according to the method of Example 1. The difference from Example 1 is that the low-temperature spandex used in the warp has a twist of 4 twists/cm and 9 twists/cm. Yarn-dyed fabrics 4# were prepared respectively. , 5#, yarn-dyed fabric 4# will have parts where low-temperature spandex leaks, and yarn-dyed fabric 5# has a poor feel.

Example 4 Yarn-dyed fabric 6#

Yarn-dyed fabric 6# was manufactured according to the method of Example 1. The difference from Example 1 is that:

The spandex used in step B is normal temperature spandex, the dyeing temperature is 150° C., and the dyeing time is 20 minutes, to obtain yarn-dyed fabric 6#.

Performance test: color fastness to soaping is level 3, color fastness to rubbing is level 3, color fastness to sublimation is level 3; ironing shrinkage is not higher than 5%; cotton feel is good.

Example 5 Yarn-dyed fabric 7#, 8#

Yarn-dyed fabrics 7# and 8# were manufactured according to the method of Example 1. The difference from Example 1 is that:

Step 2) The desizing temperature in the first desizing is 92.5°C and 90.5°C to prepare yarn-dyed fabrics 7# and 8#, respectively.

Yarn-dyed fabric 7# performance test: the fabric is stained and the quality is unqualified. Yarn-dyed fabric 8# performance test: The cotton feel is poor, and the desizing is not clean.

Example 6 Yarn-dyed fabric 9#

Yarn-dyed fabric 9# was manufactured according to the method of Example 1. The difference from Example 1 is that:

In step 2), no antibacterial auxiliary agent is added, and 4wt‰ of antibacterial agent is added in step 5) to make a yarn-dyed fabric 9#. The desizing temperature is 92.5℃ and 90.5℃ respectively to make yarn-dyed fabrics 7# and 8#.

Yarn-dyed fabric 9# performance test: color fastness to soaping level 5, color fastness to rubbing level 5, color fastness to sublimation level 5; ironing shrinkage rate is not higher than 1%; cotton feel relative to yarn-dyed fabric 1# Poor dryness.

Example 7 Yarn-dyed fabric 10#

Yarn-dyed fabric 10# was manufactured according to the method of Example 1. The difference from Example 1 is that:

Step 2) First desizing: The desizing mixture I includes 4wt% strong alkali and 2-3wt% desizing agent.

Step 4) The second desizing: the desizing mixture II is used for intermittent desizing (washing in the tank), the temperature of the second desizing is 60-90℃ and the time is not more than 45min, and the desizing mixture II includes 6g/L Sodium hydroxide, 2g/L sodium hydroxide and 1g/L degreaser, wash once with water, add 1g/L softener, wash once with water, and drain water twice or until the water is clean.

Yarn-dyed fabric 10# performance test: soaping color fastness level 3, rubbing color fastness level 3, sublimation color fastness level 3; ironing shrinkage rate is higher than 5%; good cotton feel.

Example 8 Yarn-dyed fabric 11#

The yarn-dyed fabric 11# was manufactured according to the method of Example 1. The difference from Example 1 is that steps 4) and 5) are not performed.

Yarn-dyed fabric 11# performance test: color fastness to soaping 4, color fastness to rubbing 4, color fastness to sublimation 4; ironing shrinkage rate is higher than 5%; cotton feel is poor.

Example 9 Yarn-dyed fabric 12#

The yarn-dyed fabric 12# was manufactured according to the method of Example 1. The difference from Example 1 is that step 2) is not performed.

Yarn-dyed fabric 12# performance test: soaping fastness level 3, rubbing fastness level 3, sublimation fastness level 3; ironing shrinkage rate is higher than 6%; cotton feel is poor.

Claims

A polyester imitation cotton yarn-dyed fabric is formed by interweaving warp yarns and weft yarns, and is characterized in that the warp yarns are core-spun yarns with dyed polyester as the covering layer and low-temperature spandex as the core yarn. The weight ratio is 4-49:1, and the polyester fiber is subjected to alkali reduction treatment to form an eroded surface.
The yarn-dyed fabric according to claim 1, wherein the fineness of the low-temperature spandex is 20D-40D, and the core-spun yarn is made of polyester and low-temperature spandex machine-packing process, and the twist is 5-8 twists/ cm, the rabbi is 2.5-3.5.
The yarn-dyed fabric according to claim 1, wherein the twist of the machine-wrapped process is 5-6 twists/cm, and the rabbi is 3.
The yarn-dyed fabric according to claim 1, wherein the reduction rate of the polyester fiber through alkali reduction treatment is not higher than 5%.
The yarn-dyed fabric according to claim 1, wherein the polyester is selected from at least one of polyester filaments, polyester composite fibers, and polyester staple fibers.
The yarn-dyed fabric according to claim 5, wherein the polyester filament is selected from at least one of stretch textured yarn DTY, full stretch yarn FDY, air textured yarn ATY and high elastic yarn; The polyester composite fiber includes elastic composite polyester fiber T400; the polyester staple fiber includes cotton-like polyester.
The yarn-dyed fabric according to claim 1, wherein the polyester is polyester with an F number of not less than 24.
The yarn-dyed fabric according to claim 1, wherein the dye used for dyeing the polyester is a high-temperature, water-washable and alkali-resistant disperse dye, and the dyeing temperature of the dye is 130±5°C.
The yarn-dyed fabric according to claim 1, wherein the color fastness of the yarn-dyed fabric measured according to GB/T3920-2008 is not lower than Grade 4.
The yarn-dyed fabric according to claim 9, characterized in that the color fastness of the yarn-dyed fabric according to GB/T3920-2008 is not lower than grade 5.
The yarn-dyed fabric according to claim 1, wherein the ironing shrinkage rate of the yarn-dyed fabric treated at 170°C and 15s for 6 times is not higher than 3%.
The method for manufacturing polyester cotton-like yarn-dyed fabric according to any one of claims 1-11, characterized in that it comprises the following steps:

1) Interweaving the provided weft yarn and sizing warp yarn to make a thick yarn-dyed fabric;

2) The first desizing: the coarse yarn-dyed fabric undergoes continuous desizing in the desizing mixture I. The temperature of the first desizing is 91-91.5℃ and the time is not more than 20min. The desizing mixture I includes 2-3wt% strong Alkali and 2-3wt% desizing agent;

3) Predetermined type: the temperature of predetermined type is 180-200℃;

4) The second desizing: the desizing mixture II is used for intermittent desizing. The temperature of the second desizing is 60-90℃ and the time is not more than 45min. The desizing mixture II includes 2-5wt% strong alkali and 2 -5wt% insurance powder;

5) Shaping: the temperature of shaping is 100-140°C, and the yarn-dyed fabric is prepared;

Wherein, the warp yarn includes a core-spun yarn with dyed polyester yarn as the covering layer and low-temperature spandex as the core yarn; and the sizing sizing agent includes acrylic sizing agent.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the dye used in the dyed polyester is a high-temperature, water-washable and alkali-resistant disperse dye.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the dyeing temperature is 130±5°C.
The method of manufacturing a yarn-dyed fabric according to claim 12, wherein the fineness of the low-temperature spandex is 20D-40D, and the core-spun yarn is made of polyester and low-temperature spandex machine-wrapped technology, and the twist is 5-8 twists/cm , The rabbi is 2.5-3.5.
The method for manufacturing the yarn-dyed fabric according to claim 15, wherein the twist of the machine-wrapped process is 5-6 twists/cm, and the rabbi is 3.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the sizing temperature is 130±5°C.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the concentration of the slurry is 10-15 wt%, and the speed of the sizing is 40-50 m/min.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the continuous desizing is desizing using a long car desizing machine, the first desizing temperature is 91°C, the desizing speed is 40-50m/min, and the first desizing The slurry time is not more than 15min.
The method for manufacturing the yarn-dyed fabric according to claim 12, wherein the predetermined vehicle speed is 30-40 m/min.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the intermittent desizing is in-tank water washing, the second desizing temperature is 70° C. and the time is not more than 45 min, and the desizing mixture II includes 4-5wt% strong alkali and 4-5wt% sodium hydroxide.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein the speed of the shaped woven fabric is 30-50 m/min.
The method for manufacturing a yarn-dyed fabric according to claim 12, wherein a predetermined type auxiliary agent I is added to the predetermined type, and the predetermined type auxiliary agent I includes a dry hand feeling auxiliary agent and acetic acid.
22. The method for manufacturing a yarn-dyed fabric according to claim 23, wherein the dry hand feel assistant includes an antibacterial assistant.
The method for manufacturing a yarn-dyed fabric according to claim 24, wherein the antibacterial auxiliary agent is a zinc ion antibacterial agent;

The styling auxiliary agent II is added in the styling, and the styling auxiliary agent II includes a smooth hand feeling auxiliary agent.
22. The method for manufacturing a yarn-dyed fabric according to claim 23, wherein the slippery feel aid includes a moisture wicking agent and/or a softening agent.
A garment, characterized in that the garment is made of yarn-dyed fabrics, and the yarn-dyed fabrics are selected from the yarn-dyed fabrics of any one of claims 1-11 and, in claims 12-26 At least one of the yarn-dyed fabrics manufactured by any one of the methods.
The method for manufacturing a yarn-dyed fabric according to claim 27, wherein the clothing is a shirt.