Cotton and bicomponent composite polyester blended stretch fabric and preparation method thereof

Abstract

The application belongs to the technical field of textile dyeing and finishing, and particularly relates to a cotton and double-component composite polyester blended four-way stretch fabric and a preparation method thereof. The preparation method comprises the following steps: singeing grey cloth, long-car enzyme desizing, loose bleaching, loose dyeing, dehydration, width opening, high-temperature super-feeding setting and super-shrinkage preshrinking, so as to obtain the blended four-way stretch fabric. The cotton and double-component composite polyester staple blended four-way stretch fabric has a warp elastic elongation of 10% to 15%, a weft elastic elongation of 10% to 18%, and an elastic residual elongation of less than or equal to 7%, so that the comfort double-elasticity of the warp and weft without spandex is realized. The fabric has good dimensional stability, a shrinkage rate of -3.0% to 0%, wrinkle resistance and easy care, a fabric flatness of more than or equal to 3.0 grade after washing, moisture absorption and quick drying, and a water drop diffusion performance of less than or equal to 5 s. The production process is short, the operation is simple, and the production is easy to control.

Description

Technical Field

[0001] This invention relates to a cotton and bicomponent composite polyester blended four-way stretch fabric and its preparation method, belonging to the field of textile dyeing and finishing technology. Background Technology

[0002] Stretch fabric clothing is loved by consumers for its good stretchability, allowing for free movement and enhancing the fit and freedom of motion.

[0003] Based on the source of elasticity, woven elastic fabrics can be categorized into: spandex (polyurethane elastic fiber) elastic fabrics, polyolefin-based elastic fiber (XLANCE) fabrics, modified polyester or bicomponent composite polyester elastic fiber (such as PET / PTT bicomponent composite polyester elastic fiber T400, PBT / PTT bicomponent composite polyester elastic fiber T800, SPH and BEY, etc., made by parallel composite spinning of two polyester fibers with different viscosities), and natural elastic fabrics made from inelastic fibers produced by special dyeing and finishing processes (such as pure cotton without Lycra natural elastic). Based on the direction of elasticity, woven elastic fabrics can be categorized into: weft-stretch woven fabrics (elastic only in the weft direction), warp-stretch woven fabrics (elastic only in the warp direction), and warp-weft double-stretch (elastic in both the warp and weft directions, or four-way stretch) woven fabrics.

[0004] Traditional spandex core-spun yarn woven fabrics suffer from problems such as dyeing difficulties, complex manufacturing, unstable fabric dimensions, easy aging, and a tendency to buckle and deform. Composite polyester elastic filaments (such as T400 and T800) are all filament fabrics, directly applied to the fabric. They have a stronger synthetic feel than staple fiber yarns, but their comfort and hand feel are inferior. If used as the core of core-spun yarns, the yarn count that can be spun is limited by the core yarn, and core-spun yarns are expensive. Currently, bicomponent composite polyester staple fiber blended fabrics are limited to weft-stretch fabrics, with weak longitudinal stretch and difficulty in achieving warp elasticity. Summary of the Invention

[0005] [Technical Issues]

[0006] It is difficult to achieve good elasticity in both warp and weft directions in bicomponent composite polyester staple fiber blended fabrics. There is an urgent need to develop bicomponent composite polyester staple fiber blended fabrics with dimensionally stable warp and weft elasticity.

[0007] [Technical Solution]

[0008] The first objective of this invention is to provide a cotton and bicomponent composite polyester staple fiber blended four-way stretch fabric, wherein the blended four-way stretch fabric is a woven fabric; its raw material composition is as follows: bicomponent composite polyester staple fiber content 30%~60%, cotton content 40~70%; warp and weft shrinkage rates -3.0%~0%; warp elastic elongation 10%~15%; weft elastic elongation 10%~18%; and elastic residual elongation ≤7%.

[0009] In one embodiment of the present invention, the yarn fineness of the cotton and bicomponent composite polyester staple fiber blended four-way stretch fabric is 25~60 S; it is woven from cotton and bicomponent composite polyester staple fiber blended yarn.

[0010] In one embodiment of the present invention, the woven fabric is selected from plain weave fabric, twill weave fabric, and satin weave fabric.

[0011] In one embodiment of the present invention, the bicomponent composite polyester staple fiber is a PET / PTT bicomponent composite elastic staple fiber.

[0012] The second objective of this invention is to provide a method for preparing the above-mentioned blended four-way stretch fabric, comprising the steps of: singeing the greige fabric → long-term enzymatic desizing → loose bleaching → loose dyeing → dehydration and opening → high-temperature overfeed setting → over-shrinkage pre-shrinking to obtain the blended four-way stretch fabric.

[0013] The greige fabric is a blend of cotton and bicomponent composite polyester staple fiber.

[0014] In one embodiment of the present invention, the width of the greige fabric is 1.15 to 1.25 times that of the finished fabric, and the weft density of the greige fabric is 80% to 85% of that of the finished fabric. Appropriate width and weft density allow for suitable warp and weft elastic shrinkage space during subsequent dyeing and finishing processes.

[0015] Long-run desizing is a desizing process carried out on continuous equipment, which includes a fabric feeding device, a padding device, a stacking device, a washing device, and a drying device.

[0016] In one embodiment of the present invention, a desizing solution is prepared by desizing enzyme, refining agent and water, and the singed fabric is impregnated with the desizing solution. After stacking, washing and drying, the desized fabric is obtained.

[0017] In one embodiment of the present invention, tension is applied to the warp direction of the fabric during desizing; the tension is 0.2~0.4 MPa. Desizing under a certain warp tension helps to increase the shrinkage space of the weft yarn, allowing the fabric to obtain greater elasticity in the weft direction.

[0018] In one embodiment of the present invention, the desizing enzyme concentration of the desizing solution is 4~7 g / L; the enzyme activity of the desizing enzyme is 4000 U / mL±20%; the refining agent concentration is 4~7 g / L; the pH value of the desizing solution is 6~7; and the pH of the desizing solution is adjusted with glacial acetic acid.

[0019] In one embodiment of the present invention, the rolling pressure is 0.3~0.6 MPa; the liquid carryover rate is 60%±5%; the desizing stacking temperature is 80℃~90℃; and the stacking time is 25~40 min.

[0020] In one embodiment of the present invention, the desizing speed is 60~80 m / min; the fabric rolling pressure is 0.1~0.3 MPa.

[0021] Loose bleaching and loose dyeing are performed on the greige fabric under tension-free or low-tension conditions. Bleaching and dyeing under tension-free conditions ensures no additional tension stretching, which is beneficial for allowing the fibers in the yarn to fully relax and shrink; it also helps to release internal stress and improve the dimensional stability of the fabric.

[0022] The present invention has broad applicability to bleaching and dyeing methods, and conventional loose bleaching and dyeing methods can be well applied in the present invention.

[0023] In one embodiment of the present invention, the equipment used for loose bleaching is selected from one of an airflow cylinder, an overflow cylinder, and a sand washing cylinder.

[0024] In one embodiment of the present invention, the equipment used for loose dyeing is selected from one of an airflow cylinder, an overflow cylinder, and a sand washing cylinder.

[0025] Overfeed setting is a process in which the fabric is fed in at a speed higher than the machine's stretching speed during the setting process, so that the fabric is in a relaxed state during heat setting.

[0026] Under high temperature conditions, by overfeeding the warp and shrinking the weft needle plate width, the warp and weft of the fabric are both in a relaxed state for high-temperature setting, thereby shrinking the width, increasing the weft density, improving the elasticity of the warp and weft, and stabilizing the shrinkage rate of the fabric.

[0027] In one embodiment of the present invention, the conditions for high-temperature overfeeding shaping are: temperature 150~170℃; overfeed rate of the upper and lower parts 20~32%; and overfeed rate of the left and right brushes 25~40%.

[0028] In one embodiment of the present invention, the speed of the high-temperature overfeed setting machine is 30~45 m / min; the width of the setting needle plate is 2~6 cm less than the width of the dyed fabric.

[0029] In one embodiment of the present invention, during high-temperature overfeed setting, the fabric is impregnated with a softener aqueous solution with a concentration of 20-30 g / L; the roll-off rate is 50%-70%; the rolling mill pressure is 0.2-0.4 MPa; the pH of the softener aqueous solution is 6-7; and glacial acetic acid is used to adjust the pH of the softener aqueous solution.

[0030] In one embodiment of the present invention, the softener is a hydrophilic organosilicon softener.

[0031] In one embodiment of the present invention, the overfeed rate of the over-shrinkage pre-shrinkage blanket is 8%~15%, the blanket temperature is 120℃~130℃, the shrinkage rate is 5.5%~7.5%, the machine speed for over-shrinkage pre-shrinkage is 30~40 m / min, the rubber blanket compression amount is 23 mm~27 mm, and the rubber blanket temperature is 120℃~135℃.

[0032] Preshrinkage is used to adjust the shrinkage of fabrics in the warp and weft directions. Over-shrinkage can increase the elasticity of the warp and weft directions, improve the dimensional stability of the fabric, and control the shrinkage rate.

[0033] A third objective of this invention is to provide the application of the above-mentioned blended four-way stretch fabric in the textile field.

[0034] Beneficial effects:

[0035] This invention successfully produced a cotton bicomponent composite polyester staple fiber blended four-way stretch fabric with a warp elastic elongation of 10%~15%, a weft elastic elongation of 10%~18%, and an elastic residual elongation of ≤7%. It solved the problem that the bicomponent composite polyester staple fiber blended fabric lacks warp elasticity and is difficult to achieve good warp and weft elasticity, and realized a comfortable warp and weft elastic fabric without spandex.

[0036] The cotton bicomponent composite polyester staple fiber blended four-way stretch fabric has good dimensional stability and a shrinkage rate of -3.0%~0%; it is wrinkle-resistant and easy to care for, and the fabric smoothness after washing (AATCC124-2018t 5 washes (before ironing)) is ≥3.0 grade.

[0037] The cotton bicomponent composite polyester staple fiber blended four-way stretch fabric is moisture-wicking and quick-drying, with a water-diffusion performance (AATCC79-2010, drip test) ≤5 s.

[0038] The resulting cotton-based bicomponent composite polyester staple fiber blended four-way stretch fabric has a soft and natural luster, a fluffy and soft hand feel, and is similar to cashmere. Its preparation method has a short production process, is simple to operate, and is easy to control. Detailed Implementation

[0039] Unless otherwise specified, the process methods used in the following embodiments are conventional methods.

[0040] High-temperature desizing enzyme 3H is produced by Nantong Xinhe Chemical Co., Ltd., with an enzyme activity of 4000 U / mL ± 10%. Hydrophilic silicone softener SIH is produced by Anggao Chemical (China) Co., Ltd. Refining agent CPB-2 is produced by Dorn Biotechnology Co., Ltd. Quick-drying agent KR-9DW is produced by Shijiazhuang Kunpu Chemical Co., Ltd. Quick-drying agent KR-9BK is produced by Shijiazhuang Kunpu Chemical Co., Ltd. Anti-wrinkle agent XL is produced by Nantong Xinhe Chemical Co., Ltd. Refining agent CPA-3 is produced by Dorn Biotechnology Co., Ltd. PET / PTT bicomponent composite polyester elastic staple fiber (Shudanlan) is produced by Shanghai Haikai Biomaterials Co., Ltd.

[0041] Example 1

[0042] A cotton bicomponent composite polyester staple fiber blended four-way stretch fabric, 40 S 65% cotton, 35% stretch 40 S 65% cotton, 35% stretch nylon * 130 threads / inch * 90 threads / inch, 2 / 2 twill weave, finished effective width 56 inches.

[0043] Its preparation method includes the following steps:

[0044] Greige fabric weaving → singeing → long-wheel enzyme desizing → loose bleaching → loose dyeing → dewatering → width opening → high-temperature overfeed setting → super-shrinkage pre-shrinking

[0045] Fabric weaving: Designed according to the finished fabric with a warp elastic elongation of 13% and a weft elastic elongation of 13%, the fabric width should be 168 cm and the weft density should be 77 threads / inch.

[0046] Long-run enzymatic desizing: A desizing solution is prepared using high-temperature desizing enzyme 3H, refining agent CPB-2, and water. The singed fabric is then impregnated with the desizing solution, followed by stacking, washing, and drying to obtain the desized fabric. The concentration of high-temperature desizing enzyme 3H in the desizing solution is 6 g / L; the enzyme activity of high-temperature desizing enzyme 3H is 4000 U / mL ± 10%; the concentration of refining agent CPB-2 is 6 g / L; the pH value of the desizing solution is 6~7; the pH of the desizing solution is adjusted with glacial acetic acid; during desizing, a tension of 0.3 MPa is applied in the warp direction of the fabric, the desizing enzyme tank pressing is 0.4 MPa, the stacking temperature is 85℃, the stacking time is 30 min, the water washing tank pressing is 0.2 MPa, the last water washing tank pressing is 4 MPa, and the fabric unloading and rolling pressure is 0.2 MPa; the desizing speed is 70 m / min.

[0047] Loose bleaching was performed using an airflow dyeing machine, and loose dyeing was performed using an airflow dyeing machine;

[0048] High-temperature overfeed setting: The production equipment is an ASM503 heat setting machine manufactured by Jiangsu Haida Textile Machinery Co., Ltd. The working fluid is a 25 g / L hydrophilic silicone softener SIH aqueous solution. The rolling pressure is 0.3 MPa, the roll-off rate is 60%, the pH value is 6~7, the drying room temperature is 160℃, the machine speed is 30 m / min, the upper and lower overfeed rate is 25%, the left and right brush overfeed rate is 27%, and the middle machine width is 142 cm.

[0049] Over-shrinkage pre-shrinkage: The production equipment is a Woli pre-shrinkage finishing machine with a speed of 35 m / min, rubber blanket temperature of 130℃, rubber blanket compression amount of 25 mm, wool blanket temperature of 125℃, wool blanket overfeed rate of 12%, fabric shrinkage rate of 6.5%, fabric weft density of 90~91 threads / inch, and pre-shrinkage width of 144~146 cm.

[0050] The test results of the cotton bicomponent composite polyester staple fiber blended four-way stretch fabric are shown in Table 1.

[0051] Table 1. Test results of the cotton bicomponent composite polyester staple fiber blended four-way stretch fabric prepared in Example 1

[0052]

[0053] Example 2

[0054] A cotton bicomponent composite polyester staple fiber blended four-way stretch fabric, 40 S 60% cotton, 40% stretch 40 S 60% cotton, 40% stretch ray * 120 threads / inch * 80 threads / inch, plain weave, finished effective width 56 inches.

[0055] Its preparation method includes the following steps:

[0056] Greige fabric weaving → singeing → long-wheel enzyme desizing → loose bleaching → loose dyeing → dewatering → width opening → high-temperature overfeed setting → super-shrinkage pre-shrinking

[0057] Fabric weaving: Design the fabric according to the finished fabric with a warp elastic elongation of 12% and a weft elastic elongation of 16%, calculate the fabric width and weft density, and weave the fabric.

[0058] Long-run enzymatic desizing: A desizing solution is prepared using high-temperature desizing enzyme 3H, refining agent CPB-2, and water. The singed fabric is then impregnated with the desizing solution, followed by stacking, washing, and drying to obtain the desized fabric. The concentration of high-temperature desizing enzyme 3H in the desizing solution is 5 g / L; the enzyme activity of high-temperature desizing enzyme 3H is 4000 U / mL ± 10%; the concentration of refining agent CPB-2 is 5 g / L; the pH value of the desizing solution is 6~7; the pH of the desizing solution is adjusted with glacial acetic acid; during desizing, a tension of 0.2 MPa is applied in the warp direction of the fabric, the desizing enzyme tank pressing is 0.5 MPa, the stacking temperature is 80℃, the stacking time is 25 min, the water washing tank pressing is 0.2 MPa, the last water washing tank pressing is 4 MPa, and the fabric unloading and rolling pressure is 0.3 MPa; the desizing speed is 65 m / min.

[0059] Loose bleaching was performed using an airflow dyeing machine, and loose dyeing was performed using an airflow dyeing machine;

[0060] High-temperature overfeed setting: The production equipment is an ASM503 heat setting machine manufactured by Jiangsu Haida Textile Machinery Co., Ltd. The working fluid is a 40 g / L hydrophilic silicone softener SIH aqueous solution. The rolling pressure is 0.4 MPa, the pH value is 6~7, the drying oven temperature is 150℃, the machine speed is 35 m / min, the upper and lower overfeed rate is 28%, and the left and right brush overfeed rate is 30%.

[0061] Over-shrinkage pre-shrinkage: The production equipment is a Woli pre-shrinkage finishing machine with a speed of 38 m / min, rubber blanket temperature of 135℃, rubber blanket extrusion amount of 27 mm, wool blanket temperature of 128℃, wool blanket overfeed rate of 13%, and fabric shrinkage rate of 7.0%.

[0062] Example 3

[0063] A cotton bicomponent composite polyester staple fiber blended four-way stretch fabric, 50 S 70% cotton, 30% stretch 50 S 70% cotton, 30% stretch nylon * 120 threads / inch * 90 threads / inch, plain weave, finished effective width 56 inches.

[0064] Its preparation method includes the following steps:

[0065] Greige fabric weaving → singeing → long-wheel enzyme desizing → loose bleaching → loose dyeing → dewatering → width opening → high-temperature overfeed setting → super-shrinkage pre-shrinking

[0066] Fabric weaving: Design the fabric according to the finished fabric with a warp elastic elongation of 13% and a weft elastic elongation of 15%, calculate the fabric width and weft density, and weave the fabric.

[0067] Long-run enzymatic desizing: A desizing solution is prepared using high-temperature desizing enzyme 3H, refining agent CPA-3, and water. The singed fabric is then impregnated with the desizing solution, followed by stacking, washing, and drying to obtain the desized fabric. The concentration of high-temperature desizing enzyme 3H in the desizing solution is 7 g / L; the enzyme activity of high-temperature desizing enzyme 3H is 4000 U / mL ± 10%; the concentration of refining agent CPA-3 is 7 g / L; the pH value of the desizing solution is 6~7; the pH of the desizing solution is adjusted with glacial acetic acid; during desizing, a tension of 0.4 MPa is applied in the warp direction of the fabric, the desizing enzyme tank pressing is 0.3 MPa, the stacking temperature is 90℃, the stacking time is 40 min, the water washing tank pressing is 0.2 MPa, the last water washing tank pressing is 4 MPa, and the fabric unloading and rolling pressure is 0.1 MPa; the desizing speed is 75 m / min.

[0068] Loose bleaching was performed using an airflow dyeing machine, and loose dyeing was performed using an airflow dyeing machine;

[0069] High-temperature overfeed setting: The production equipment is an ASM503 heat setting machine manufactured by Jiangsu Haida Textile Machinery Co., Ltd. The working fluid is a 30 g / L hydrophilic silicone softener SIH aqueous solution. The rolling pressure is 0.2 MPa, the pH value is 6~7, the drying oven temperature is 170℃, the machine speed is 45 m / min, the upper and lower overfeed rate is 32%, and the left and right brush overfeed rate is 38%.

[0070] Over-shrinkage pre-shrinkage: The production equipment is a Woli pre-shrinkage finishing machine with a speed of 32 m / min, rubber blanket temperature of 120℃, rubber blanket compression amount of 23 mm, wool blanket temperature of 122℃, wool blanket overfeed rate of 10%, and fabric shrinkage rate of 5.5%.

[0071] Comparative Example 1

[0072] A cotton bicomponent composite polyester staple fiber blended fabric, the preparation method includes the following steps:

[0073] Greige fabric weaving → singeing → long-wheel one-bath scouring and bleaching → mercerizing → long-wheel one-bath dyeing with disperse and reactive dyes → setting → pre-shrinking

[0074] Long-car, one-bath bleaching method: car speed 60 m / min, material tank and high-temperature feed liquid temperature 50℃, stacking temperature 75~80℃, stacking time 60 min, tension 0.2 MPa, bleaching liquid formula: NaOH concentration 25 g / L, hydrogen peroxide concentration 15 g / L, quick-setting agent KR-9DW concentration 15 g / L, quick-setting agent KR-9BK concentration 10 g / L.

[0075] Mercerizing: A cloth-clamp mercerizing machine is used with a speed of 60±5 m / min. The mercerizing solution is a NaOH aqueous solution with a concentration of 175 g / L and a tension of 0.2 MPa. The width of the machine during mercerizing is 155 cm.

[0076] One-bath dyeing with disperse and reactive dyes on a long-running machine: machine speed 50 m / min, temperature of pre-drying chamber 1: 70℃, temperature of pre-drying chamber 2: 90℃, temperature of pre-drying chamber 3: 110℃, temperature of drying cylinder: 95℃, temperature of steaming box: 103℃, temperature of water seal: 45℃, machine speed of the rear machine: 50 m / min, soaping agent: 15 g / L, temperature of washing boxes 1#~4#: 60℃, temperature of washing box 5#: 45℃, temperature of washing boxes 1#~4#: 60℃, temperature of washing box 6#: 90℃, temperature of washing box 7#: 95℃, temperature of washing boxes 8#~9#: 45℃, temperature of washing boxes 10#~11#: 45℃;

[0077] Setting: The production equipment is an ASM503 heat setting machine manufactured by Jiangsu Haida Textile Machinery Co., Ltd. The working solution is a 30 g / L hydrophilic silicone softener SIH aqueous solution. The rolling pressure is 0.3 MPa, the roll-off rate is 60%, and the pH value is 6~7. The drying oven temperature is 160℃, the machine speed is 65 m / min, and the center machine width is 142 cm.

[0078] Pre-shrinkage: The production equipment is a Woli pre-shrinking and finishing machine with a speed of 70 m / min, a rubber blanket temperature of 130℃, a rubber blanket compression amount of 25mm, a felt blanket temperature of 125℃, a fabric shrinkage rate of 2%, a weft density of 90~91 threads / inch, and a pre-shrinkage width of 144~146 cm.

[0079] Comparative Example 2

[0080] A cotton bicomponent composite polyester staple fiber blended fabric, the preparation method of which differs from that of Example 1 only in that the long desizing in Example 1 is replaced by loose desizing:

[0081] The production equipment for loose desizing is an airflow cylinder. The desizing solution formula is as follows: anti-wrinkle agent XL concentration 1 g / L, refining agent CPA-3 concentration 3 g / L, high-temperature desizing enzyme 3H concentration 3 g / L, glacial acetic acid concentration 1 g / L; desizing temperature 98℃, desizing time 45 min.

[0082] Table 2. Test results of cotton bicomponent composite polyester staple fiber blended fabrics prepared in the examples and comparative examples.

[0083]

[0084] The dimensional stability and elasticity data of the cotton bicomponent composite polyester staple fiber blended fabrics prepared in Example 1 and Comparative Examples 1 and 2 are shown in Table 2. Comparative Example 1 used a tight-thread dyeing process, resulting in fabrics with low warp elasticity, failing to meet the requirements for warp elastic fabrics. Comparative Example 2 used a loose desizing process, resulting in insufficient weft elasticity. Compared with Comparative Example 2, Example 1 applied tension in the warp direction during the desizing process, ultimately improving the warp elastic elongation of the finished blended fabric and significantly increasing the weft elastic elongation.

[0085] The blended fabric prepared in Example 1 has a warp and weft elastic elongation greater than 10%, achieving the four-way stretch effect of cotton bicomponent composite polyester staple fiber blended fabric. It also has good dimensional stability, is smooth and wrinkle-free, and has excellent moisture absorption properties.

[0086] The embodiments provided above are not intended to limit the scope of the invention, nor are the described steps intended to limit the order of execution. Any obvious modifications made to the invention by those skilled in the art based on existing common knowledge also fall within the scope of protection defined by the claims.

Claims

1. A four-way stretch fabric blended from cotton and bicomponent composite polyester staple fiber, characterized in that, The blended four-way stretch fabric is a woven fabric; its raw material composition is as follows: 30%~60% bicomponent composite polyester staple fiber content, 40%~70% cotton content; warp and weft shrinkage rates of -3.0%~0%; warp elastic elongation of 10%~15%; weft elastic elongation of 10%~18%; and residual elastic elongation of ≤7%. The preparation method of the blended four-way stretch fabric includes: singeing the greige fabric → long-wheel enzyme desizing → loose bleaching → loose dyeing → dehydration and opening → overfeed setting → over-shrinkage pre-shrinking to obtain the blended four-way stretch fabric. The greige fabric is a blend of cotton and bicomponent composite polyester staple fiber. The width of the greige fabric is 1.15 to 1.25 times that of the finished fabric, and the weft density of the greige fabric is 80% to 85% of that of the finished fabric. A desizing solution is prepared using desizing enzyme, refining agent, and water. The singed fabric is then impregnated with the desizing solution, stacked, washed, and dried to obtain the desized fabric. Tension is applied in the warp direction of the fabric during desizing; the tension is 0.2~0.4 MPa. Loose bleaching and loose dyeing are performed on the greige fabric under tension-free or low-tension dyeing conditions. Overfeed setting is a process in which the fabric is fed in at a speed higher than the machine's stretching speed during the setting process.

2. The blended four-way stretch fabric according to claim 1, characterized in that, The yarn fineness of the four-way stretch fabric made of cotton and bicomponent composite polyester staple fiber blend is 25~60 S; it is woven from cotton and bicomponent composite polyester staple fiber blend yarn; the bicomponent composite polyester staple fiber is PET / PTT bicomponent composite elastic staple fiber.

3. The blended four-way stretch fabric according to claim 1, characterized in that, The desizing enzyme concentration in the desizing solution is 4~7 g / L; the enzyme activity of the desizing enzyme is 4000 U / mL±20%; the refining agent concentration is 4~7 g / L; the pH value of the desizing solution is 6~7; the pH of the desizing solution is adjusted with glacial acetic acid; the padding pressure is 0.3~0.6 MPa; and the liquid carry-over rate is 60%±5%.

4. The blended four-way stretch fabric according to claim 1, characterized in that, The desizing temperature is 80℃~90℃, and the stacking time is 25~40 min.

5. The blended four-way stretch fabric according to claim 1, characterized in that, The conditions for overfeeding for shaping are: temperature 150~170℃; overfeed rate of 20~32% for the upper and lower parts; and overfeed rate of 25~40% for the left and right brushes.

6. The blended four-way stretch fabric according to claim 1, characterized in that, The overfeed rate of the pre-shrinked felt is 8%~15%, the felt temperature is 120℃~130℃, the shrinkage rate is 5.5%~7.5%, the rubber blanket compression is 23 mm~27 mm, and the rubber blanket temperature is 120℃~135℃.

7. The application of the cotton and bicomponent composite polyester staple fiber blended four-way stretch fabric as described in claim 1 in the textile field.

Images