Double-layer cloud-touch texture cotton fabric and preparation method thereof

Abstract

The application relates to the technical field of cotton fabric preparation, in particular to a double-layer cloud-sense texture cotton fabric and a preparation method thereof, and a preparation method of the double-layer cloud-sense texture cotton fabric, which comprises the following steps: S1, natural shrinkage treatment of the grey fabric, the double-layer knitted cotton grey fabric is placed after being unwound to make the fibers naturally shrink; S2, in-cylinder treatment, the grey fabric treated in S1 is washed, neutralized and soft-treated; S3, tension-free dehydration setting; S4, atomization treatment; S5, hot air relaxation drying; S6, steaming and preshrinking treatment; S7, physical beating softening treatment; and S8, tension-free cloth inspection and winding, in the application, the tension-free treatment is adopted first, the fiber internal stress is effectively avoided, the fabric bulkiness and the size stability are significantly improved, and the shrinkage rate can be reduced to close to zero; the atomization treatment and the standing puffing process are designed in the application, the fiber moisture content reaches 2-3 times of the public standard moisture regain, and the fibers are fully and uniformly puffed.

Description

Technical Field

[0001] This invention relates to the field of cotton fabric preparation technology, and in particular to a double-layer cloud-feel textured cotton fabric and its preparation method. Background Technology

[0002] Cotton fabrics are widely used in clothing, home textiles, and other fields due to their excellent moisture absorption and breathability, softness and comfort, and natural environmental friendliness. Knitted cotton fabrics, due to their unique loop structure, have good extensibility and elasticity. Double-knitted fabrics, in particular, offer better warmth and a thicker feel through the combination of two fabric layers, thus finding increasing use in high-end apparel and bedding. To improve the performance of knitted cotton fabrics, finishing processes are crucial. Proper finishing processes can improve the fabric's bulk, softness, and dimensional stability.

[0003] Existing finishing processes for cotton fabrics generally have the following shortcomings: First, tension is applied to the fabric during drying and setting, making it difficult to fully release the internal stress of the fibers, which affects the fluffiness and dimensional stability of the fabric; second, the softness effect is achieved by relying on chemical softeners, which makes it difficult to achieve uniform treatment of the inner and outer layers for double-layer knitted fabrics; third, there is a lack of special treatment processes for fiber moisture absorption and swelling and internal stress release, making it difficult to obtain a lasting and stable fluffi and soft effect.

[0004] Therefore, a new finishing process for double-layer knitted cotton fabric is needed that can fully release the internal stress of the fibers in a tension-free state, achieve a lasting fluffy and soft effect of the fabric through a combination of physical and chemical methods, and ensure the uniformity and dimensional stability of the inner and outer layers of the double-layer fabric. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a double-layer cloud-feel textured cotton fabric and its preparation method.

[0006] A method for preparing a double-layer cloud-feel textured cotton fabric includes the following steps:

[0007] S1. Natural shrinkage treatment of greige fabric: After unwinding the double-layer knitted cotton greige fabric, let it stand still to allow the fibers to shrink naturally.

[0008] S2, In-cylinder treatment, the fabric treated by S1 is washed, neutralized and softened;

[0009] S3, tension-free dehydration and setting: the fabric treated by S2 is dehydrated under tension-free conditions, and then air-dried and set under tension-free conditions.

[0010] S4. Atomization treatment: The fabric treated by S3 is atomized to make the fibers absorb moisture, and then the fabric after absorbing moisture is left to stand in a closed space to make the fibers swell.

[0011] S5. Hot air relaxation and drying: The fabric treated in S4 is subjected to steam humidification, steaming and natural air drying in a relaxed state.

[0012] S6. Steaming and pre-shrinking treatment: The fabric treated by S5 is steamed and cooled under tension-free conditions.

[0013] S7. Physical beating softening treatment: High-speed airflow is used to beat the raw fabric after S6 treatment.

[0014] S8. Tension-free fabric inspection and rolling: The fabric treated in S7 is inspected and rolled up under tension-free conditions.

[0015] Preferably, in step S1, the settling time is 20-28 hours.

[0016] Preferably, in step S2, the washing process involves heating the water to 55-65°C and washing for 50-70 minutes; the neutralization process involves adding citric acid for neutralization for 25-35 minutes; and the softening process involves cooling the water to 35-45°C and adding a fluffing and softening agent for softening for 25-35 minutes.

[0017] Preferably, in step S3, the air-drying temperature is 110-130℃, and the air-drying speed is 15-25 meters per minute.

[0018] Preferably, in step S4, the humidifier performs atomization treatment at a pressure of 2-4 Pa / kg and a speed of 15-20 m / min, so that the fabric fibers absorb moisture evenly and the moisture content reaches 20%-30%. The atomized fabric is then left to stand in a closed space for 6-8 hours.

[0019] Preferably, in step S5, the steam humidification treatment is carried out under pressure conditions, the temperature of the steam humidification treatment is 95-105°C, the time of the steam humidification treatment is 25-35 minutes, and the pressure of the steam humidification treatment is 4-6 Pa / kg; the steaming treatment time is 50-70 minutes, and the natural air drying treatment time is 25-35 minutes.

[0020] Preferably, the temperature of the steam is 110-130℃, and the speed of the pre-shrinking treatment of the fabric is 14-18 meters / minute.

[0021] Preferably, in step S2, before the water washing process, the degreasing and impurity removal process includes: adding water at a weight ratio of 1:10 between the cloth and water and heating it to 45-55°C, adding degreasing agent and penetrant and performing a heat treatment, the heat treatment time being 25-35 minutes.

[0022] Preferably, the raw material for the double-layer knitted cotton fabric is combed Siro-spun colored yarn, and the fabric is woven on a double-sided jacquard loom.

[0023] Preferably, a double-layer cloud-feel textured cotton fabric prepared using the above-described process.

[0024] The beneficial effects of this invention are:

[0025] 1. In this invention, tension-free treatment is first used to effectively avoid the generation of internal fiber stress, significantly improve the fabric's fluffiness and dimensional stability, and reduce the shrinkage rate to near zero.

[0026] 2. This invention incorporates atomization and static expansion processes to achieve a fiber moisture content that is 2-3 times the standard re-moistening rate, ensuring that the fiber is fully and uniformly expanded.

[0027] 3. The hot air relaxation and drying process in this invention fundamentally eliminates internal stress in the fibers through a combination of steam humidification, evaporation, and natural air drying.

[0028] 4. This invention softens the fabric through physical patting, without relying on chemical softeners, and produces a uniform effect on the inner and outer layers of the double-layer fabric, achieving consistent softness between the inner and outer layers.

[0029] 5. This invention combines chemical and physical treatments to maximize the fluffiness and softness of double-layer knitted cotton fabric, meeting the quality requirements of high-end textiles. Detailed Implementation

[0030] The present invention will be further explained below with reference to specific embodiments.

[0031] A method for preparing a double-layer cloud-feel textured cotton fabric includes the following steps:

[0032] S1. Natural shrinkage treatment of greige fabric: After unwinding the double-layer knitted cotton greige fabric, let it stand still to allow the fibers to shrink naturally.

[0033] S2, In-cylinder treatment, the fabric treated by S1 is washed, neutralized and softened;

[0034] S3, tension-free dehydration and setting: the fabric treated by S2 is dehydrated under tension-free conditions, and then air-dried and set under tension-free conditions.

[0035] S4. Atomization treatment: The fabric treated by S3 is atomized to make the fibers absorb moisture, and then the fabric after absorbing moisture is left to stand in a closed space to make the fibers swell.

[0036] S5. Hot air relaxation and drying: The fabric treated in S4 is subjected to steam humidification, steaming and natural air drying in a relaxed state.

[0037] S6. Steaming and pre-shrinking treatment: The fabric treated by S5 is steamed and cooled under tension-free conditions.

[0038] S7. Physical beating softening treatment: High-speed airflow is used to beat the raw fabric after S6 treatment.

[0039] S8. Tension-free fabric inspection and rolling: The fabric treated in S7 is inspected and rolled up under tension-free conditions.

[0040] In S1, the settling time is 20-28 hours.

[0041] In S2, the washing process involves heating the water to 55-65℃ and washing for 50-70 minutes; the neutralization process involves adding citric acid for 25-35 minutes; and the softening process involves cooling the water to 35-45℃ and adding a fluffing and softening agent for 25-35 minutes.

[0042] In S3, the air-drying and shaping temperature is 110-130℃, and the air-drying and shaping speed is 15-25 meters / minute.

[0043] In S4, the humidifier atomizes the fabric at a pressure of 2-4 Pa / kg and a speed of 15-20 m / min, so that the fabric fibers absorb moisture evenly and the moisture content reaches 20%-30%. The atomized fabric is then left to stand in a closed space for 6-8 hours.

[0044] In S5, the steam humidification treatment is carried out under pressure conditions. The steam humidification treatment temperature is 95-105℃, the steam humidification treatment time is 25-35 minutes, and the steam humidification treatment pressure is 4-6 Pa / kg. The steaming treatment time is 50-70 minutes, and the natural air drying treatment time is 25-35 minutes.

[0045] The steam temperature is 110-130℃, and the pre-shrinking speed of the fabric is 14-18 meters / minute.

[0046] In S2, before the water washing process, the oil and impurities are removed. The oil and impurities removal process includes: adding water at a weight ratio of 1:10 between the fabric and water and heating it to 45-55℃, adding degreasing agent and penetrant and performing a heat treatment for 25-35 minutes.

[0047] The raw material for double-layer knitted cotton greige fabric is combed Siro-spun colored yarn, and the greige fabric is woven on a double-sided jacquard loom.

[0048] A double-layer cloud-feel textured cotton fabric prepared using the above-described process.

[0049] Raw material preparation:

[0050] Raw materials: 100% cotton fiber, combed Siro spinning process, 40-50 count yarn

[0051] Loom: Double-sided jacquard loom, 34-inch wide, 22-gauge;

[0052] Top layer thread length: 15.5 cm / 50 stitches;

[0053] Inner layer thread length: 15 cm / 50 stitches.

[0054] Example 1

[0055] This embodiment provides a method for preparing a double-layer cloud-feel textured cotton fabric.

[0056] Step S1: Natural shrinkage treatment of the greige fabric:

[0057] After the fabric is unwound, it is laid flat in a temperature and humidity controlled warehouse; temperature in the warehouse: 20℃, relative humidity: 60%; resting time: 24 hours; after resting, the seams are connected to form a continuous fabric strip.

[0058] Step S2 In-cylinder treatment:

[0059] (1) Degreasing and impurity removal treatment:

[0060] Water-to-cloth ratio: 1:10; Temperature: 50℃; Add 0.5% neutral degreasing agent (Zhejiang Chuanhua Chemical Group TF-129F) and 0.3% penetrant (JFC); Heat treatment: 30 minutes; Dyeing and finishing tank speed: 15 rpm.

[0061] (2) Water washing treatment:

[0062] Temperature: 60℃; Time: 60 minutes; Rotation speed: 20-25 rpm; Change the washing solution 2-3 times, and continue washing for 20 minutes each time.

[0063] (3) Neutralization treatment:

[0064] Add 0.3% citric acid; temperature: 60℃; time: 30 minutes.

[0065] (4) Softening treatment:

[0066] Temperature: 40℃; Add 1% cationic fluffing and softening agent (Zhejiang Chuanhua Chemical Group TF-4755); Time: 30 minutes; Rotation speed: 12 rpm; Let stand for 5 minutes after treatment.

[0067] Step S3: Tension-free dehydration and setting:

[0068] (1) Dehydration:

[0069] Centrifugal dehydration at 800 rpm; dehydration time: 3 minutes; moisture content reduced to 40%; in a tension-free state, the fibers remain naturally relaxed.

[0070] (2) Air drying and shaping:

[0071] A hot air circulation system is used, with tension-free conveyor belts; air temperature: 120℃; air velocity: 5 m / s; operating speed: 20 m / min; a fluffing and softening agent (concentration 20 g / L) is added to the shaping tank; the moisture content is reduced to 5% after treatment.

[0072] Step S4: Atomization and Static Expansion

[0073] (1) Atomization treatment:

[0074] High-pressure atomizing nozzle, pressure 3 Pa / kg; conveying speed: 20 m / min; residence time: 15 seconds; moisture content increased from 6% to 20%.

[0075] (2) Static expansion:

[0076] Enclosed space, temperature 25℃, relative humidity 90%; standing time: 6 hours.

[0077] Step S5: Hot air relaxation and drying:

[0078] Protect the product by inserting a breathable mesh bag; Rotary speed of the ring dryer drum: 3 revolutions per minute.

[0079] (1) Add steam for humidification:

[0080] Saturated steam pressure: 5 Pa / kg; temperature: 100℃; time: 30 minutes; fiber temperature rises to 95℃, moisture content increases to 38%.

[0081] (2) Steaming treatment:

[0082] Stop the steam supply and maintain the temperature at 100℃; time: 60 minutes; effect: fully evaporate the moisture inside the fiber and gradually release the internal stress.

[0083] (3) Air dry:

[0084] Introduce room temperature air at 20°C; air velocity: 2 m / s; time: 30 minutes; temperature decreases from 100°C to 30°C; moisture content decreases to 8% after treatment.

[0085] Step S6: Pre-shrinking of the steamed fabric:

[0086] Tension-free automatic conveyor belt (rubber felt belt); conveyor belt speed: 16 meters / minute.

[0087] (1) Steaming:

[0088] Saturated steam temperature: 120℃; Residence time: 30 seconds;

[0089] The fiber temperature rises to 110℃.

[0090] (2) Cooling:

[0091] Cold air temperature: 15℃; wind speed: 3 m / s; residence time: 20 seconds; fiber temperature drops to 30℃; moisture content drops to 10%.

[0092] Step S7: Physical patting and softening treatment:

[0093] The air accelerator generates a high-speed airflow of 30 m / s; electrostatic field strength of 5 kV / m; transmission speed of 15 m / min; vibration frequency of 50 Hz; and residence time of 30 seconds.

[0094] Step S8 Tension-free fabric rolling inspection:

[0095] (1) Fabric inspection:

[0096] Fabric inspection speed: 10 meters / minute; check for defects, holes, oil stains and other quality problems.

[0097] (2) Curling:

[0098] Air-expanded shaft winding, winding tension 0.5 N / cm; speed difference <1%; winding difference between inner and outer diameters of the fabric roll ≤2 mm; length of each roll: 50 meters; outer diameter of the fabric roll: 30 cm; wrapped with breathable packaging paper.

[0099] Example 2

[0100] This embodiment provides a method for preparing a double-layer cloud-feel textured cotton fabric.

[0101] Step S1: Natural shrinkage treatment of the greige fabric:

[0102] After the fabric is unwound, it is laid flat in a temperature and humidity-controlled warehouse. The temperature in the warehouse is 25°C and the relative humidity is 70%. The resting time is 28 hours. After resting, the seams are joined to form a continuous fabric strip.

[0103] Step S2 In-cylinder treatment:

[0104] (1) Degreasing and impurity removal treatment:

[0105] Water-to-cloth ratio: 1:10; Temperature: 55℃; Add 1% neutral degreasing agent (same brand as in Example 1) and 0.5% penetrant (same brand as in Example 1); Heat treatment: 35 minutes; Dyeing and finishing vat speed: 20 rpm.

[0106] (2) Water washing treatment:

[0107] Temperature: 65℃; Time: 70 minutes; Rotation speed: 25 rpm; Change the washing solution 2-3 times, and continue washing for 20 minutes each time.

[0108] (3) Neutralization treatment:

[0109] Add 0.5% citric acid; temperature: 60℃; time: 35 minutes.

[0110] (4) Softening treatment:

[0111] Temperature: 45℃; Add 2% cationic fluffing and softening agent (same brand as in Example 1); Time: 35 minutes; Rotation speed: 15 rpm; Let stand for 5 minutes after treatment.

[0112] Step S3: Tension-free dehydration and setting:

[0113] (1) Dehydration:

[0114] Centrifuge dehydration at 1000 rpm; dehydration time: 5 minutes; moisture content reduced to 50%; in a tension-free state, the fibers remain naturally relaxed.

[0115] (2) Air drying and shaping:

[0116] A hot air circulation system and tension-free conveyor belt are used; air temperature: 130℃; air velocity: 8 m / s; operating speed: 25 m / min; a fluffing and softening agent (concentration 30 g / L) is added to the shaping tank; the moisture content is reduced to 8% after treatment.

[0117] Step S4: Atomization and Static Expansion

[0118] (1) Atomization treatment:

[0119] High-pressure atomizing nozzle, 4 Pa / kg; conveying speed: 25 m / min; residence time: 20 s; moisture content increased from 8% to 30%.

[0120] (2) Static expansion:

[0121] Enclosed space, temperature 30℃, relative humidity 95%; standing time: 9 hours.

[0122] Step S5: Hot air relaxation and drying:

[0123] Protect the product by inserting a breathable mesh bag; rotation speed of the ring dryer drum: 5 revolutions per minute.

[0124] (1) Add steam for humidification:

[0125] Saturated steam pressure: 6 Pa / kg; temperature: 105℃; time: 35 minutes; fiber temperature rises to 100℃, moisture content increases to 40%.

[0126] (2) Steaming treatment:

[0127] Stop the steam supply and maintain the temperature at 100℃; time: 70 minutes.

[0128] (3) Air dry:

[0129] Introduce room temperature air at 25°C; air velocity: 3 m / s; time: 35 minutes; temperature decreases from 100°C to 40°C; moisture content decreases to 10% after treatment.

[0130] Step S6: Pre-shrinking of the steamed fabric:

[0131] Tension-free automatic conveyor belt; conveyor belt speed: 18 meters / minute.

[0132] (1) Steaming:

[0133] Saturated steam temperature: 130℃; Residence time: 40 seconds

[0134] The fiber temperature rises to 115℃.

[0135] (2) Cooling:

[0136] Cold air temperature: 20℃; wind speed: 5 m / s; residence time: 30 seconds; fiber temperature drops to 40℃; moisture content drops to 12%.

[0137] Step S7: Physical patting and softening treatment:

[0138] The air accelerator generates a high-speed airflow of 50 m / s; electrostatic field strength of 10 kV / m; transmission speed of 20 m / min; vibration frequency of 100 Hz; and residence time of 40 seconds.

[0139] Step S8 Tension-free fabric rolling inspection:

[0140] (1) Fabric inspection:

[0141] Fabric inspection speed: 15 meters / minute; check for defects, holes, oil stains and other quality problems.

[0142] (2) Curling:

[0143] Air-expanded shaft winding, winding tension 1 Newton / cm; speed difference <1%; winding difference between inner and outer diameters of the fabric roll ≤2 mm; length of each roll: 80 meters; outer diameter of the fabric roll: 40 cm; wrapped with breathable packaging paper.

[0144] Example 3

[0145] This embodiment provides a method for preparing a double-layer cloud-feel textured cotton fabric.

[0146] Step S1: Natural shrinkage treatment of the greige fabric:

[0147] After the fabric is unwound, it is laid flat in a temperature and humidity-controlled warehouse. The temperature in the warehouse is 22℃ and the relative humidity is 60%. The resting time is 20 hours. After resting, the seams are joined to form a continuous fabric strip.

[0148] Step S2 In-cylinder treatment:

[0149] (1) Degreasing and impurity removal treatment:

[0150] Water-to-cloth ratio: 1:10; Temperature: range 45℃; Add 0.5% neutral degreasing agent (same brand as in Example 1) and 0.3% penetrant (same brand as in Example 1); Heat treatment: 25 minutes; Dyeing and finishing tank speed: 15 rpm.

[0151] (2) Water washing treatment:

[0152] Temperature: 55℃; Time: 50 minutes; Rotation speed: 20 rpm; Change the washing solution twice, and continue washing for 20 minutes each time.

[0153] (3) Neutralization treatment:

[0154] Add 0.3% citric acid; temperature: 60℃; time: 25 minutes.

[0155] (4) Softening treatment:

[0156] Temperature: 35℃; Add 1% cationic fluffing and softening agent (same brand as in Example 1); Time: 25 minutes; Rotation speed: 10 rpm; Let stand for 5 minutes after treatment.

[0157] Step S3: Tension-free dehydration and setting:

[0158] (1) Dehydration:

[0159] Centrifugal dehydration at 800 rpm; dehydration time: 3 minutes; moisture content reduced to 40%; in a tension-free state, the fibers remain naturally relaxed.

[0160] (2) Air drying and shaping:

[0161] A hot air circulation system and tension-free conveyor belt are used; air temperature: 110℃; air velocity: 5 m / s; operating speed: 15 m / min; a fluffing and softening agent (concentration 20 g / L) is added to the shaping tank; the moisture content is reduced to 5% after treatment.

[0162] Step S4: Atomization and Static Expansion

[0163] (1) Atomization treatment:

[0164] High-pressure atomizing nozzle, pressure 2 Pa / kg; conveying speed 15 m / min; residence time: 15 seconds; moisture content increased from 5% to 20%.

[0165] (2) Static expansion:

[0166] Enclosed space, temperature 25℃, relative humidity 85%; standing time: 5 hours.

[0167] Step S5: Hot air relaxation and drying:

[0168] Protect the product by inserting a breathable mesh bag; the rotation speed of the ring dryer drum is 3-5 revolutions per minute.

[0169] (1) Add steam for humidification:

[0170] Saturated steam pressure: range 4 Pa / kg; temperature: range 95°C; time: 25 minutes; fiber temperature rises to 95°C, moisture content increases to 35%.

[0171] (2) Steaming treatment:

[0172] Stop the steam supply and maintain the temperature at 100℃; time: 50 minutes;

[0173] (3) Air dry:

[0174] Introduce room temperature air at 20°C; air velocity: 2 m / s; time: 25 minutes; temperature decreases from 100°C to 30°C; moisture content decreases to 8-10% after treatment.

[0175] Step S6: Pre-shrinking of the steamed fabric:

[0176] Tension-free automatic conveyor belt; conveyor belt speed: 14 meters / minute.

[0177] (1) Steaming:

[0178] Saturated steam temperature: 110℃; Residence time: 30 seconds

[0179] The fiber temperature rises to 110℃.

[0180] (2) Cooling:

[0181] Cold air temperature: 15℃; wind speed: 3 m / s; residence time: 20 seconds; fiber temperature drops to 30℃; moisture content drops to 10%.

[0182] Step S7: Physical patting and softening treatment:

[0183] The air accelerator generates a high-speed airflow of 30 m / s; electrostatic field strength of 5 kV / m; transmission speed of 15 m / min; vibration frequency of 50 Hz; and residence time of 30 seconds.

[0184] Step S8 Tension-free fabric rolling inspection:

[0185] (1) Fabric inspection:

[0186] Fabric inspection speed: 10 meters / minute; check for defects, holes, oil stains and other quality problems.

[0187] (2) Curling:

[0188] Air-expanded shaft winding, winding tension 0.5 N / cm; speed difference <1%; winding difference between inner and outer diameters of the fabric roll ≤2 mm; length of each roll: 50 meters; outer diameter of the fabric roll: 30 cm; wrapped with breathable packaging paper.

[0189] The fabrics treated in Examples 1-3 were subjected to performance testing, and the test results are as follows.

[0190] Final fabric performance indicators:

[0191]

[0192] Among them, the bulkiness, compression rebound and softness were tested according to GB / T 24442.1-2009; the shrinkage rate was tested according to GB / T 8629-2017; the air permeability was tested according to GB / T 5453-2025; the moisture regain was tested according to GB / T 9995-1997; the breaking strength (warp and weft) was tested according to GB / T 3923.1-2013; the color fastness to washing was tested according to GB / T 3921-2008; the color fastness to rubbing was tested according to GB / T 3920-2008; the gloss value was tested according to FZ / T 01097-2006 (2017); and the pilling grade (5000 rubs) was tested according to the Martindale method of GB / T4802.2-2008.

[0193] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for preparing a double-layer cloud-feel textured cotton fabric, characterized in that, Includes the following steps: S1. Natural shrinkage treatment of greige fabric: After unwinding the double-layer knitted cotton greige fabric, let it stand still to allow the fibers to shrink naturally. S2, In-cylinder treatment, the fabric treated by S1 is washed, neutralized and softened; S3, tension-free dehydration and setting: the fabric treated by S2 is dehydrated under tension-free conditions, and then air-dried and set under tension-free conditions. S4. Atomization treatment: The fabric treated by S3 is atomized to make the fibers absorb moisture, and then the fabric after absorbing moisture is left to stand in a closed space to make the fibers swell. S5. Hot air relaxation and drying: The fabric treated in S4 is subjected to steam humidification, steaming and natural air drying in a relaxed state. S6. Steaming and pre-shrinking treatment: The fabric treated by S5 is steamed and cooled under tension-free conditions. S7. Physical beating softening treatment: High-speed airflow is used to beat the raw fabric after S6 treatment. S8. Tension-free fabric inspection and rolling: The fabric treated in S7 is inspected and rolled up under tension-free conditions.

2. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, In S1, the settling time is 20-28 hours.

3. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, In step S2, the washing process involves heating the water to 55-65°C and washing for 50-70 minutes; the neutralization process involves adding citric acid for neutralization for 25-35 minutes; and the softening process involves cooling the water to 35-45°C and adding a fluffing and softening agent for softening for 25-35 minutes.

4. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, In step S3, the air-drying temperature is 110-130℃, and the air-drying speed is 15-25 meters per minute.

5. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, In step S4, the humidifier performs atomization at a pressure of 2-4 Pa / kg and a speed of 15-20 m / min, so that the fabric fibers absorb moisture evenly and the moisture content reaches 20%-30%. The atomized fabric is then left to stand in a closed space for 6-8 hours.

6. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, In step S5, the steam humidification treatment is carried out under pressure conditions. The temperature of the steam humidification treatment is 95-105℃, the time of the steam humidification treatment is 25-35 minutes, and the pressure of the steam humidification treatment is 4-6 Pa / kg. The steaming treatment time is 50-70 minutes, and the natural air drying treatment time is 25-35 minutes.

7. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, The steam temperature is 110-130℃, and the pre-shrinking speed of the steamed fabric is 14-18 meters / minute.

8. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, In step S2, before the water washing process, oil and impurities are removed. The oil and impurities removal process includes: adding water at a weight ratio of 1:10 between the cloth and water and heating it to 45-55°C, adding degreasing agent and penetrant and performing a heat treatment for 25-35 minutes.

9. The method for preparing a double-layer cloud-feel textured cotton fabric according to claim 1, characterized in that, The raw material for the double-layer knitted cotton fabric is combed Siro-spun colored yarn, and the fabric is woven on a double-sided jacquard loom.

10. A double-layer cloud-feel textured cotton fabric prepared using the process described in any one of claims 1 to 9.

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