Processing method of super-comfortable natural anti-wrinkle fabric

Abstract

The invention belongs to the technical field of textile dyeing and finishing, and particularly relates to a production method of an ultra-comfortable natural anti-wrinkle fabric, which comprises yarn raw material selection, fabric design, dyeing, weaving and after finishing, and comprises the following finishing process steps of singeing, enzyme desizing, pretreatment, liquid ammonia treatment, carborundum sanding, airflow drying, tentering and preshrinking. The polyester filament yarn is used as the core, the fabric is endowed with natural wrinkle resistance by using the wrinkle resistance of the fiber, the fabric is not subjected to resin finishing, the wrinkle resistance of 3.5 grade or above is realized, a layer of short and dense fluff is arranged on the surface, and the fabric is fine and smooth in hand feeling, comfortable and stylish to wear, easy to care, zero in formaldehyde content and more environment-friendly and healthy.

Description

Technical Field

[0001] The invention belongs to the technical field of finishing of textile fabrics, and particularly relates to a processing method of ultra-comfortable natural wrinkle-resistant fabrics. Background Art

[0002] With the accelerated pace of modern life, consumers prefer wrinkle-free, easy-care clothing, while also demanding fabrics that retain a natural feel. Currently, most wrinkle-free shirts are achieved through chemical wrinkle-resistant finishes on fabrics or garments. This carries the risk of formaldehyde release and high levels of additives polluting the environment. Furthermore, chemical wrinkle-resistant fabrics have a poor feel and a poor wearing experience.

[0003] Patent CN103541103A discloses improving the anti-wrinkle effect by changing the conventional fabric structure specifications and dyeing depth. Without chemical anti-wrinkle finishing, the fabric has a flatness of about 3.0 after washing and still needs to be ironed after washing, which does not meet people's demand for high wrinkle-free performance. Patent CN119041073B discloses achieving natural high wrinkle resistance by utilizing the fiber's own wrinkle resistance, high twist yarn rigidity, low curvature of yarn in fabric, and liquid ammonia molecules to change fiber morphology. High twist yarn affects the touch of the fabric and is more suitable for spring and summer. The application scenarios are limited and cannot meet the needs of dressing in all seasons. In addition, the high twist yarn process is complicated and the production difficulty is high. Therefore, it is urgent to develop a formaldehyde-free, ultra-comfortable natural anti-wrinkle product. Summary of the Invention

[0004] The purpose of the present invention is to provide a processing method for ultra-comfortable and naturally wrinkle-resistant fabrics. The present invention mainly uses polyester filaments as the core and utilizes the fiber's own wrinkle-resistant properties to give the fabric natural wrinkle resistance. Without chemical anti-wrinkle finishing, the fabric achieves wrinkle resistance of level 3.5 or above. There is a short and dense layer of fluff on the surface, which has a delicate hand feel, is comfortable and stylish to wear, is easy to care for, has zero formaldehyde content, and is more environmentally friendly and healthy.

[0005] The technical solutions of the present invention are as follows: The processing method of the ultra-comfortable natural wrinkle-resistant fabric of the present invention sequentially comprises the following steps: yarn raw material selection, fabric design, dyeing, weaving and finishing: (1) Raw material selection: The outer layer of the warp yarn is made of cotton and polyester blended fibers, with polyester as the core in the middle, and the core fineness is 20D-30D; the weft yarn is made of regenerated cellulose polyester blended yarn, and the regenerated cellulose fiber fineness is 0.9-1.0dtex. The polyester fiber content in the fabric is more than 40%; (2) Fabric design: Warp tightness 60-75%, weft tightness 45-55%, total tightness 78-87%; (3) Dyeing: dyeing the blended yarn using the form of cone dyeing to obtain dyed warp and weft yarns; (4) Weaving: warping and sizing the warp yarn dyed in step (3), and weaving according to the parameters designed in step (2); (5) Post-finishing: The yarn-dyed fabric obtained in step (4) is subjected to singeing, desizing, pretreatment, liquid ammonia, corundum sanding, air drying, stretching, and pre-shrinking in sequence to obtain an ultra-comfortable, naturally wrinkle-resistant fabric; In the step (1), the warp and weft yarn counts are 30-50 dtex, the outer cotton fiber content of the warp yarn is 60-70 wt.%, the polyester fiber content is 40-30 wt.%, the intermediate polyester core fineness is 20D-30D, the yarn is obtained by blending core-spun yarn, the yarn count and twist coefficient are 300-400, and the yarn is steamed at 90°C for 30 minutes; the weft yarn has a regenerated cellulose fiber content of 40-60 wt.%, the polyester fiber content is 40-60 wt.%, the polyester fiber fineness is 0.89-1.33 dtex, the yarn is obtained by blending compact yarn, and the yarn count and twist coefficient are 380-410; In the step (5), the diamond sanding is carried out in a wet state, the moisture content of the fabric is 60-80%, 4 sanding rollers are used, the rotation speed is 800-1200 rpm, the sandpaper mesh number is 400-600, and the vehicle speed is 15-30 m / min.

[0006] The step (3) includes the following processes: yarn dyeing, double-bath dyeing of the yarn; followed by color fixing, softening, and drying.

[0007] In the step (5), the singeing adopts a one-forward and one-reverse singeing method, the vehicle speed is 80-100 m / min, the flame intensity is 10-14 mbar, and the burner position is direct burning; the desizing adopts high-temperature enzyme desizing, the degreasing agent TF109H: 3-10 g / L is added, the high-temperature steaming time is 95-98 ° C for 20-30 min, and then washed with water at 85-95 ° C for 5-10 min, and then washed with water at 40-50 ° C for 3-5 min, and dried in a high-temperature drying drum.

[0008] In the step (5), the pretreatment process is carried out on a tenter frame, using an anti-fouling agent STF3: 30-50g / L, a drying room temperature of 90-110°C, a vehicle speed of 50-70m / min, and a tenter width of 85-95% of the grey fabric width.

[0009] In the step (5), the liquid ammonia vehicle speed is 30-50 m / min, and the pH value of the cloth surface is 5-7.

[0010] In the step (5), the airflow drying uses an open-width device with a speed of 8-20 m / min, an air volume of 50-80%, and a temperature of 110-130°C.

[0011] In the step (5), the stretching process includes silicone elastomer LF: 20-40 g / L, silicone oil softener 10-30 g / L, neutralized acid 1-3 g / L, machine speed 50-70 m / min, overfeed 2-4%, and weft straightening.

[0012] In the step (5), the pre-shrinking speed is 50-70 m / min, the humidity of the falling cloth is 4-6%, and the pressing distance is 6-10 mm.

[0013] Beneficial effects: The warp is a blend of cotton and polyester fibers, with polyester as the core, and then treated with liquid ammonia to achieve excellent wrinkle resistance; the weft is a blend of regenerated cellulose and polyester yarns, which are then wet-sanded to give the fabric excellent comfort.

[0014] The present invention achieves a balance between wrinkle resistance and comfort through raw material innovation and process collaboration. No chemical anti-wrinkle agents are used in the post-finishing process. The fabric has excellent wrinkle resistance and is resistant to washing, giving the fabric more wearing value and making the fabric more comfortable to wear. It solves the problems of conventional chemical anti-wrinkle finishing containing formaldehyde, poor wearing experience, complex process flow, and environmental pollution. DETAILED DESCRIPTION

[0015] To make the technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be further described below in conjunction with specific embodiments. Unless otherwise specified, all raw materials used in the embodiments are commercially available.

[0016] Example 1 The processing method of the ultra-comfortable natural wrinkle-resistant fabric comprises the following steps: yarn raw material selection → fabric design → dyeing → weaving → finishing, and is characterized in that it comprises the following steps: (1) Raw material selection: The outer layer of the warp yarn is made of cotton and polyester fiber blended with polyester as the core in the middle, and the core fineness is 20D; the weft yarn is made of Tencel polyester blended yarn with a Tencel fiber fineness of 0.9dtex. The polyester fiber content in the fabric accounts for 45%.

[0017] (2) Fabric design: Plain weave is preferred, with a warp tightness of 60%, a weft tightness of 45%, and a total tightness of 78%.

[0018] (3) Dyeing: The blended yarn is dyed using the tube dyeing method to obtain the dyed warp and weft yarns.

[0019] (4) Weaving: The warp yarn dyed in step (3) is warped and sized, and then woven according to the parameters designed in step (2).

[0020] (5) Post-finishing: The yarn-dyed fabric obtained in step (4) is subjected to singeing, desizing, pretreatment, liquid ammonia, corundum sanding, air drying, stretching, and pre-shrinking in sequence to obtain an ultra-comfortable, naturally wrinkle-resistant fabric.

[0021] In the step (1), the warp and weft yarn counts are 40 dtex, the cotton fiber content of the warp outer layer is 60 wt.%, the polyester fiber content is 40 wt.%, the middle polyester core fineness is 20D, and the yarn is obtained by blending core-spun yarn, the yarn count and twist coefficient is 300, and the yarn is steamed at 90°C*30min; the weft yarn has a Tencel content of 60 wt.%, a polyester fiber content of 40 wt.%, and a polyester fiber fineness of 0.89 dtex, and the yarn is obtained by blending compact yarn, and the yarn count and twist coefficient is 380.

[0022] In the step (5), the diamond sanding is carried out in a wet state, the moisture content of the fabric is 60%, 4 sanding rollers are used, the rotation speed is 1000 rpm, the sandpaper mesh number is 600, and the vehicle speed is 30 m / min.

[0023] The step (3) includes the following processes: yarn dyeing, double-bath dyeing of the yarn, first dyeing with disperse dye at 130°C*40min according to the required color, then reducing and cleaning at 80°C*20min; then dyeing with reactive dye at 60°C*40min, then fixing, softening and drying to obtain the dyed warp and weft yarns.

[0024] In the step (5), the singeing adopts a one-forward and one-reverse singeing method, the vehicle speed is 100 m / min, the flame intensity is 14 mbar, and the burner position is direct burning; the desizing uses a high-temperature desizing enzyme, and the degreasing agent TF109H: 3 g / L is added. The high-temperature steaming time is 95°C for 30 minutes, and then washed with water at 85°C for 10 minutes, and then washed with water at 40°C for 5 minutes, and dried in a high-temperature drying drum.

[0025] In the step (5), the pretreatment process is carried out on a tenter frame, using an anti-fouling agent STF3: 30g / L, a drying room temperature of 90°C, a vehicle speed of 50m / min, and a tenter width of 85% of the grey fabric width.

[0026] In the step (5), the liquid ammonia vehicle speed is 30 m / min and the pH value of the cloth surface is 5.

[0027] In the step (5), the airflow drying uses an open-width device with a speed of 8 m / min, an air volume of 50%, and a temperature of 110°C.

[0028] In the step (5), in the tentering process, the silicone elastomer LF: 20g / L, silicone oil softener 10g / L, neutralized acid 1g / L, the speed is 50m / min, overfeed is 2%, and the weft is straightened.

[0029] In the step (5), the pre-shrinking speed is 50 m / min, the falling cloth humidity is 4%, and the pressing distance is 6 mm.

[0030] Example 2: The processing method of the ultra-comfortable natural wrinkle-resistant fabric comprises the following steps: yarn raw material selection → fabric design → dyeing → weaving → finishing, and is characterized in that it comprises the following steps: (1) Raw material selection: The outer layer of the warp yarn is made of a blend of cotton and polyester fibers, with a polyester core in the middle, and the core fineness is 30D; the weft yarn is made of a regenerated cellulose polyester blended yarn, and the viscose fiber fineness is 1.0 dtex. The polyester fiber content in the fabric is 40%.

[0031] (2) Fabric design: Twill weave is preferred, with a warp tightness of 75%, a weft tightness of 55%, and a total tightness of 87%.

[0032] (3) Dyeing: The blended yarn is dyed using the tube dyeing method to obtain the dyed warp and weft yarns.

[0033] (4) Weaving: The warp yarn dyed in step (3) is warped and sized, and then woven according to the parameters designed in step (2).

[0034] (5) Post-finishing: The yarn-dyed fabric obtained in step (4) is subjected to singeing, desizing, pretreatment, liquid ammonia, corundum sanding, air drying, stretching, and pre-shrinking in sequence to obtain an ultra-comfortable, naturally wrinkle-resistant fabric.

[0035] In the step (1), the warp yarn count is 40 Ne, the weft yarn count is 50 Ne, the cotton fiber content of the warp outer layer is 70wt.%, the polyester fiber content is 30wt.%, the middle polyester core fineness is 30D, the yarn is obtained by blending core-spun yarn, the yarn count and twist coefficient is 400, and the yarn is steamed at 90℃*30min; the weft yarn has a viscose fiber content of 40wt.%, a polyester fiber content of 60wt.%, and a polyester fiber fineness of 1.33dtex, and the yarn is obtained by blending compact yarn, and the yarn count and twist coefficient is 410.

[0036] In the step (5), the diamond sanding is carried out in a wet state, the moisture content of the fabric is 80%, 4 sanding rollers are used, the rotation speed is 1200 rpm, the sandpaper mesh number is 400, and the vehicle speed is 15 m / min.

[0037] The step (3) includes the following processes: yarn dyeing, double-bath dyeing of the yarn, first dyeing with disperse dye at 135°C for 30 minutes according to the desired color, then reduction washing at 80°C for 15 minutes; then dyeing with reactive dye at 60°C for 40 minutes, followed by color fixing, softening, and drying. The dyed warp and weft yarns are obtained.

[0038] In the step (5), the singeing adopts a one-forward and one-reverse singeing method, the vehicle speed is 80m / min, the flame intensity is 10mbar, and the burner position is direct burning; the desizing adopts high-temperature enzyme desizing, the degreasing agent TF109H: 10g / L is added, the high-temperature steaming time is 98℃ for 20min, then the water washing is carried out at 95℃ for 5min, and then the water washing is carried out in 50℃ water for 3min, and the high-temperature drying drum is dried.

[0039] In the step (5), the pretreatment process is carried out on a tenter frame, using an anti-fouling agent STF3: 50g / L, a drying room temperature of 110°C, a vehicle speed of 70m / min, and a tenter width expansion of 95% of the width of the grey fabric.

[0040] In the step (5), the liquid ammonia vehicle speed is 50 m / min and the pH value of the cloth surface is 7.

[0041] In the step (5), the airflow drying uses an open-width device with a speed of 20 m / min, an air volume of 80%, and a temperature of 130°C.

[0042] In the step (5), the stretching process includes silicone elastomer LF: 40g / L, silicone oil softener 30g / L, neutralized acid 3g / L, machine speed 70m / min, overfeed 4%, and weft straightening.

[0043] In the step (5), the pre-shrinking speed is 70 m / min, the falling cloth humidity is 6%, and the pressing distance is 10 mm.

[0044] Example 3: The processing method of the ultra-comfortable natural wrinkle-resistant fabric comprises the following steps: yarn raw material selection → fabric design → dyeing → weaving → finishing, and is characterized in that it comprises the following steps: (1) Raw material selection: The outer layer of the warp yarn is made of a blend of cotton and polyester fibers, with a polyester core in the middle, and the core fineness is 30D; the weft yarn is made of a regenerated cellulose polyester blended yarn with a Tencel fiber fineness of 0.9 dtex. The polyester fiber content in the fabric is 40.5%.

[0045] (2) Fabric design: Plain weave is preferred, with a warp tightness of 72%, a weft tightness of 50%, and a total tightness of 86%.

[0046] (3) Dyeing: The blended yarn is dyed using the tube dyeing method to obtain the dyed warp and weft yarns.

[0047] (4) Weaving: The warp yarn dyed in step (3) is warped and sized, and then woven according to the parameters designed in step (2).

[0048] (5) Post-finishing: The yarn-dyed fabric obtained in step (4) is subjected to singeing, desizing, pretreatment, liquid ammonia, corundum sanding, air drying, stretching, and pre-shrinking in sequence to obtain an ultra-comfortable, naturally wrinkle-resistant fabric.

[0049] In the step (1), the warp yarn count is 30 dtex, the weft yarn count is 50 dtex, the cotton fiber content of the warp outer layer is 70 wt.%, the polyester fiber content is 30 wt.%, the intermediate polyester core fineness is 20D-30D, the yarn is obtained by blending core-spun yarn, the yarn count and twist coefficient is 350, and the yarn is steamed at 90°C*30min; the weft yarn has a Tencel content of 50 wt.%, a polyester fiber content of 50.%, and a polyester fiber fineness of 0.89 dtex, and the yarn is obtained by blending compact yarn, and the yarn count and twist coefficient is 400.

[0050] In the step (5), the diamond sanding is carried out in a wet state, with a fabric moisture content of 65%, 4 sanding rollers, a rotation speed of 800 rpm, a sandpaper mesh of 500, and a vehicle speed of 20 min.

[0051] The step (3) includes the following processes: yarn dyeing, double-bath dyeing of the yarn; followed by color fixing, softening, and drying.

[0052] In the step (5), the singeing adopts a one-forward and one-reverse singeing method, the vehicle speed is 95m / min, the flame intensity is 12mbar, and the burner position is direct burning; the desizing adopts high-temperature enzyme desizing, the degreasing agent TF109H: 5g / L is added, the high-temperature steaming time is 98℃ for 25min, then the water washing at 90℃ for 10min, and then the water washing in 50℃ water for 5min, and the high-temperature drying drum is dried.

[0053] In the step (5), the pretreatment process is carried out on a tenter frame, using an anti-fouling agent STF3: 40g / L, a drying room temperature of 100°C, a vehicle speed of 62m / min, and a tenter width expansion of 90% of the grey fabric width.

[0054] In the step (5), the liquid ammonia vehicle speed is 45 m / min and the pH value of the cloth surface is 6.5.

[0055] In the step (5), the airflow drying uses an open-width device with a speed of 15 m / min, an air volume of 60%, and a temperature of 120°C.

[0056] In the step (5), the stretching process includes silicone elastomer LF: 30g / L, silicone oil softener 20g / L, neutralized acid 2g / L, machine speed 60m / min, overfeed 3%, and weft straightening.

[0057] In the step (5), the pre-shrinking speed is 60 m / min, the falling cloth humidity is 5.5%, and the pressing distance is 7.6 m.

[0058] Comparative Example 1: The fabric processing method is as described in Example 1, except that the yarn raw material is selected as follows: the warp yarn is CVC40 British count yarn, the cotton fiber accounts for 60%, the polyester fiber accounts for 40%, and the polyester content in the fabric accounts for 40%; Comparative Example 2: The fabric processing method is similar to that of Example 1, except that the post-finishing process does not include diamond sanding.

[0059] Comparative Example 3: The fabric processing method is similar to that of Example 1, except that the finishing step does not include liquid ammonia.

[0060] Comparative Example 4: The fabric processing method is as described in Example 1, except that the yarn raw material is selected, CVC40 English yarn is used for the weft yarn, the cotton fiber accounts for 60%, the polyester fiber accounts for 40%, and the polyester content in the fabric accounts for 38%.

[0061] Comparative Example 5: The fabric processing method refers to Example 1, except that the yarn raw material is selected, the warp yarn is 40-ne cotton-covered polyester yarn, the cotton fiber accounts for 85% of the yarn, the polyester fiber accounts for 15%, and the polyester content in the fabric is 25%.

[0062] Comparative Example 6: The fabric processing method is as follows: refer to Example 1, except that the yarn raw material is selected as follows: CVC40 British count yarn is used for the warp yarn, cotton fiber accounts for 60%, polyester fiber accounts for 40%, and the polyester content in the fabric accounts for 40%; resin finishing is added after liquid ammonia, and the baking process is performed with a resin dosage of 80 g / L and a baking process of 150°C*3 min.

[0063] The fabrics prepared in Examples 1-3 and Comparative Examples 1-6 were subjected to performance tests using the following methods: Elastic elongation is tested according to the test standard ASTMD310707; Anti-pilling, tested according to the test standard ASTMD4970; The wrinkle resistance test standard is AATCC124; The formaldehyde content is tested according to JISL1041 standard; The hand feel test standard is AATCC EP5-2011.

[0064] The test results of the fabric properties prepared in Examples 1-3 and Comparative Examples 1-6 are shown in Table 1.

[0065] Table 1 Fabric performance test results ; Note: The more *, the softer and fluffier it feels, and the more comfortable it feels.

[0066] As can be seen from the data in Table 1, compared with Comparative Example 16, the fabrics obtained by the method of the present invention all have a wrinkle resistance of grade 3.5 or higher, a comfortable hand feel, are formaldehyde-free, and have a weft elasticity of approximately 10%, making them comfortable and non-constraining to wear. They also have a pilling resistance of grade 3 / 4 or higher, making them less prone to pilling and easier to care for during daily wear. Conventional resin finishing carries the risk of formaldehyde irritation, and the resin-treated fabric also has a poor tactile feel, resulting in a poor wearing experience.

Claims

1. A method for processing ultra-comfortable, naturally wrinkle-resistant fabrics, comprising, in sequence, yarn raw material selection, fabric design, dyeing, weaving, and finishing, characterized in that: The following steps are involved: (1) Raw material selection: The outer layer of the warp yarn is made of cotton and polyester fiber blended with polyester as the core in the middle, and the core fineness is 20D-30D; the weft yarn is made of regenerated cellulose polyester blended yarn with a regenerated cellulose fiber fineness of 0.9-1.0dtex; the polyester fiber content in the fabric is more than 40%; (2) Fabric design: Warp tightness 60-75%, weft tightness 45-55%, total tightness 78-87%; (3) Dyeing: dyeing the blended yarn using the form of cone dyeing to obtain dyed warp and weft yarns; (4) Weaving: warping and sizing the warp yarn dyed in step (3), and weaving according to the parameters designed in step (2); (5) Post-finishing: The yarn-dyed fabric obtained in step (4) is subjected to singeing, desizing, pretreatment, liquid ammonia, corundum sanding, air drying, stretching, and pre-shrinking in sequence to obtain an ultra-comfortable, naturally wrinkle-resistant fabric; In the step (1), the warp and weft yarn counts are 30-50 dtex, the outer cotton fiber content of the warp yarn is 60-70 wt.%, the polyester fiber content is 30-40 wt.%, the intermediate polyester core fineness is 20D-30D, the yarn is obtained by blending core-spun yarn, the yarn count and twist coefficient are 300-400, and the yarn is steamed at 90°C for 30 minutes; the weft yarn has a regenerated cellulose fiber content of 40-60 wt.%, the polyester fiber content is 40-60 wt.%, the polyester fiber fineness is 0.89-1.33 dtex, the yarn is obtained by blending compact yarn, and the yarn count and twist coefficient are 380-410; In the step (5), the diamond sanding is carried out in a wet state, the moisture content of the fabric is 60-80%, 4 sanding rollers are used, the rotation speed is 800-1200 rpm, the sandpaper mesh number is 400-600, and the vehicle speed is 15-30 m / min.

2. The method for processing the ultra-comfortable natural wrinkle-resistant fabric according to claim 1, characterized in that: Step (3) includes the following processes: yarn dyeing, wherein the yarn is subjected to double-bath dyeing; Then it is fixed, softened and dried.

3. The method for processing the ultra-comfortable, naturally wrinkle-resistant fabric according to claim 1, characterized in that: In step (5), the singeing adopts a one-forward and one-reverse singeing method, the speed is 80-100m / min, the flame intensity is 10-14mbar, and the burner position is direct burning; the desizing adopts high-temperature enzyme desizing, the degreasing agent TF109H: 3-10g / L is added, the high-temperature steaming time is 95-98℃ for 20-30min, and then washed with water at 85-95℃ for 5-10min, and then washed with water at 40-50℃ for 3-5min, and dried with a high-temperature drying drum.

4. The method for processing the ultra-comfortable, naturally wrinkle-resistant fabric according to claim 1, characterized in that: In step (5), the pretreatment process is carried out on a tenter frame, using an anti-fouling agent STF3: 30~50g / L, a drying room temperature of 90~110℃, a machine speed of 50~70m / min, and a tenter width of 85-95% of the width of the grey fabric.

5. The method for processing the ultra-comfortable natural wrinkle-resistant fabric according to claim 1, characterized in that: In step (5), the liquid ammonia vehicle speed is 30-50 m / min, and the pH value of the cloth surface is 5-7.

6. The method for processing the ultra-comfortable, naturally wrinkle-resistant fabric according to claim 1, characterized in that: In step (5), airflow drying uses a flat-width device with a speed of 8-20 m / min, an air volume of 50-80%, and a temperature of 110-130°C.

7. The method for processing the ultra-comfortable natural wrinkle-resistant fabric according to claim 1, characterized in that: In step (5), in the tentering process, silicone elastomer LF: 20-40g / L, silicone oil softener 10-30g / L, neutralized acid 1-3g / L, machine speed 50-70m / min, overfeed 2-4%, weft straightening.

8. The method for processing the ultra-comfortable, naturally wrinkle-resistant fabric according to claim 1, characterized in that: In step (5), the pre-shrinking speed is 50-70 m / min, the humidity of the falling cloth is 4-6%, and the pressing distance is 6-10 mm.