Smooth cotton knitted fabric and preparation process thereof

Abstract

The invention relates to the technical field of cotton knitted fabrics, and particularly discloses a smooth cotton knitted fabric and a preparation process thereof. The invention relates to a preparation process of a smooth cotton knitted fabric. The preparation process comprises the following steps: pre-preparation of a blank, singeing treatment, cloth boiling, edible wool finishing, dyeing, soaping, color fixation, cloth loosening and drying, and shaping finishing. A soaking finishing mode is adopted for eating hair finishing, and a formula of eating hair bath liquid comprises cellulase, aloe extract, iso-tridecanol polyoxyethylene ether, organic acid and water; a padding finishing mode is adopted for sizing finishing, and a formula of sizing finishing liquid comprises amino silicon oil, triethanolamine oleic soap, lauric acid polyethylene glycol ester, organic acid and water. The cotton knitted fabric manufactured through the manufacturing process is smooth in surface and excellent in wear resistance and has the appearance characteristics of chemical fiber filament fabric, the dry and fluffy performance of the cotton knitted fabric is further improved, and meanwhile the softness, moisture absorption and sweat releasing performance of the cotton knitted fabric is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of cotton knitted fabrics, in particular to a smooth cotton knitted fabric and a preparation process thereof. Background Art

[0002] In recent years, consumers' demand for textiles has far exceeded the basic scope of covering the body, keeping warm, being durable and affordable, and has turned to pay more attention to the touch, appearance and environmental performance of the fabric. Natural fibers have once again won wide favor in the market with their excellent comfort experience and sustainable development characteristics, becoming the star fiber in the textile industry. Cotton knitted fabrics have become one of the favorite textiles of consumers due to their softness, comfort, good breathability and strong moisture absorption.

[0003] However, the common problems of traditional cotton knitted fabrics are that the fabric surface is more hairy, feels rough, and is prone to pilling, which makes traditional cotton knitted fabrics lack the cleanliness of chemical fiber fabrics. Therefore, it is necessary to further improve the hairiness and finish of cotton knitted fabrics, so that they have an appearance and texture similar to chemical fiber filament fabrics, are less likely to pill when worn, and at the same time enhance the fluffy, dry and soft feel of natural cotton fibers, making them more comfortable and skin-friendly to wear. Summary of the invention

[0004] In order to improve the hairiness and smoothness of cotton knitted fabrics and reduce the pilling problem, the present application proposes a smooth cotton knitted fabric and a preparation process thereof. The cotton knitted fabric manufactured by the preparation process of the present application not only has a smooth surface and excellent wear resistance, and has the appearance characteristics of chemical fiber filament fabrics, but also further improves the dryness and fluffiness of the cotton knitted fabric itself, and at the same time further improves the softness and moisture absorption and perspiration performance of the cotton knitted fabric.

[0005] In the first aspect, the present application provides a process for preparing a smooth cotton knitted fabric using the following technical solution: A process for preparing a smooth cotton knitted fabric, comprising the following process steps in sequence: singeing treatment → cloth boiling → wool finishing → cloth loosening and drying → shaping finishing; The wool feeding finishing adopts an immersion finishing method, the bath ratio is 1: (4-7), the wool feeding temperature is 50-55° C., the wool feeding time is 55-65 min, and the formula of the wool feeding bath liquid includes: 1.2-1.5 g / L of cellulase, 0.5-0.8 g / L of aloe extract, 0.2-0.5 g / L of isomeric tridecanol polyoxyethylene ether, 0.1-0.2 g / L of organic acid, and the balance is water; The shaping and finishing adopts a padding and finishing method, the shaping temperature is 130-140°C, the shaping speed is 20-30m / min, and the roller pressure is 3-5N / cm 2The formula of the styling finishing liquid includes: 15-18g / L amino silicone oil, 3-5g / L triethanolamine oleic acid soap, 1-2g / L polyethylene glycol laurate, 0.1-0.3g / L organic acid, and the balance is water.

[0006] In the above technical scheme, the present application significantly improves the smoothness, anti-pilling performance and softness of the fabric by optimizing the post-treatment process of cotton knitted fabrics. Specifically, the present application optimizes the wool bath liquid, further adds aloe extract and isomeric tridecanol polyoxyethylene ether to the wool bath liquid, further enhances the permeability of the wool bath liquid, effectively reduces the damage of cotton fibers, and better integrates the fine fibers on the surface of cotton knitted fabrics, further improves the comfort and texture of cotton fibers, further smoothes the fabric and improves the wear resistance of the fabric, thereby reducing the occurrence of pilling. At the same time, the present application optimizes the shaping and finishing, by adding triethanolamine oleic acid soap and lauric acid polyethylene glycol ester to the setting agent, triethanolamine oleic acid soap has good emulsification and dispersing effects, which helps the uniform shaping of the fabric, and lauric acid polyethylene glycol ester can enhance the softness and elasticity of the fabric, and the two are used in conjunction with amino silicone oil, so that the fabric has better softness and wear resistance while maintaining its shape.

[0007] Preferably, the pre-molding process steps are as follows: the grey cloth is pre-molded by a Monforts eight-section chassis molding machine, the surface temperature of the cloth is controlled at 195-205°C during pre-molding, the effective baking time of the grey cloth is 20s, and the speed of the grey cloth passing through the machine is 35-45m / min to obtain the grey cloth.

[0008] Preferably, the wool-eating finishing specifically comprises: water is put into the dye vat, cotton knitted fabric is put into the vat, the bath ratio is controlled to be 1:(4-7), 0.1-0.2 g / L of organic acid is first added, the pH in the bath is controlled to be 6.5-7.5, the temperature is raised to 50-55°C at 3-5°C / min, and then 1.2-1.5 g / L of cellulase, 0.5-0.8 g / L of aloe extract, and 0.2-0.5 g / L of isomeric tridecanol polyoxyethylene ether are added in sequence, stirred evenly, kept warm for 50-60 min, and finally the temperature is raised to 90-95°C at 3-5°C / min, kept warm for 10-15 min to kill the cellulase activity, drained, and the wool-eating is completed.

[0009] In the above technical scheme, the present application optimizes the process parameters of wool-eating finishing to ensure that cellulase fully acts on cotton fibers at a suitable temperature and time, thereby effectively removing the hairiness on the surface of the fabric. At the same time, the addition of aloe extract and isomeric tridecyl alcohol polyoxyethylene ether enhances the permeability and cleaning effect of the wool-eating bath liquid, giving the fabric better glossiness and wear resistance, and improving the wearing comfort.

[0010] Preferably, the shaping and finishing process steps specifically include: adopting a padding finishing method, first preparing a shaping and finishing liquid, and then pumping the shaping and finishing liquid into a shaping machine liquid tank, setting the shaping temperature to 130-140°C, the shaping speed to 20-30m / min, and the roller pressure to 3-5N / cm 2 , complete the shaping and finishing.

[0011] In the above technical scheme, the present application ensures that the setting agent acts evenly on the fabric at a suitable temperature and speed by optimizing the process parameters of the setting and finishing, thereby effectively fixing the shape of the fabric. At the same time, the addition of triethanolamine oleic acid soap and polyethylene glycol laurate not only enhances the emulsification and dispersing effect of the setting agent, but also gives the fabric better softness and elasticity, so that the fabric has better softness and wear resistance while maintaining its shape.

[0012] Preferably, the singeing treatment adopts a double-sided singeing method with a singeing speed of 40-50m / min.

[0013] Preferably, the singeing treatment specifically includes: selecting cotton knitted fabrics, adopting a double-sided singeing method, opening the upper and lower natural gas burners on the singeing machine at the same time, and passing the cotton knitted fabrics through the middle of the upper and lower burners at a speed of 40 to 50 m / min until the cotton fiber hairiness on the surface and bottom of the fabric is fully burned off, completing the singeing treatment.

[0014] In the above technical solution, the present application ensures that the hairiness of cotton fibers is completely and evenly burned off by optimizing the process parameters of the singeing treatment, thereby effectively improving the smoothness and anti-pilling performance of the fabric.

[0015] Preferably, the cloth is boiled by immersion treatment, the bath ratio is 1: (4-7), the cloth boiling temperature is 90-105°C, the cloth boiling time is 40-60min, and the cloth boiling bath liquid formula includes: chelating agent 1-2g / L, emulsifying dispersant 1-2g / L, stabilizer 1-2g / L, caustic soda 1-3wt%, hydrogen peroxide 2-4wt%, and the balance is water.

[0016] Preferably, the cloth boiling specifically includes: feeding water into the dye vat, feeding cotton knitted fabric into the vat, controlling the bath ratio to be 1:(4-7), firstly adding 1-2 g / L of chelating agent, 1-2 g / L of emulsifying dispersant, and 1-2 g / L of stabilizer in sequence, running the dye vat for 5-8 min, then adding 1-3 wt % of caustic soda, heating to 45-55° C., keeping warm for 8-12 min, then adding 2-4 wt % of hydrogen peroxide, and after adding, heating to 90-95° C. at 3-4° C. / min, keeping warm for 55-65 min, then cooling to 55-60° C. at 3-4° C. / min, draining, and completing the cloth boiling.

[0017] In the above technical scheme, the present application optimizes the cloth boiling process to ensure that the chemical components in the cloth boiling liquid can fully penetrate and act on the cotton fibers, thereby effectively removing impurities and natural waxes on the fabric, making the fabric softer, more absorbent, and having better dyeing properties.

[0018] Preferably, the process steps of loosening and drying specifically include: loosening the cotton knitted fabric, and then drying it at a temperature of 110-130° C. until the moisture content of the fabric is less than 5%.

[0019] In the above technical scheme, the present application optimizes the process of loosening and drying the fabric to ensure that the fibers of the fabric will not be damaged due to excessive temperature during the drying process, while ensuring that the moisture content of the fabric can be quickly reduced to a safe range, thereby avoiding wrinkles and shrinkage of the fabric after drying, and improving the flatness and performance of the fabric.

[0020] Preferably, the dyeing is carried out by immersion dyeing, with a bath ratio of 1:(4-7), and the dyeing bath formula includes: 0.1-0.2g / L organic acid, 1-10wt% dye, 45-55g / L dyeing accelerator, 20-30g / L pH regulator, and the balance is water.

[0021] Preferably, the dyeing process steps specifically include: water is put into the dye vat, cotton knitted fabric is put into the vat, the bath ratio is controlled to be 1: (4-7), 1-10wt% of the pre-dissolved dye is first added, stirred evenly, and run for 20-30 minutes, then 45-55g / L of the accelerator is added, stirred evenly, linearly and uniformly pumped into the dye vat for 20-30 minutes, run for 10-15 minutes, then the pH regulator is added and stirred evenly, run for 10-15 minutes, the temperature is raised to 55-60°C at 1-2°C / min, and the water is drained after keeping warm for 30-40 minutes to complete the dyeing.

[0022] Preferably, the soap washing is carried out by immersion washing, with a bath ratio of 1:(4-7), and the soap washing bath liquid formula includes 1-5 g / L of soaping agent, and the balance is water.

[0023] Preferably, the soaping process steps specifically include: water entering the dye vat, water returning to the auxiliary vat, controlling the bath ratio to be 1:(4-7), adding 1-5 g / L of soaping agent, heating to 90-95° C. at 3-5° C. / min, keeping warm for 10-15 min, draining water, and completing soaping.

[0024] Preferably, the color fixing adopts an immersion finishing method, with a bath ratio of 1:(4-7), and the formula of the color fixing bath liquid includes 1-5wt% of a color fixing agent, 0.3-0.5g / L of an organic acid, and the balance is water.

[0025] Preferably, the color fixing process specifically includes: water entering the dye vat, water returning to the auxiliary vat, adding 0.3-0.5 g / L of organic acid and 1-5 wt% of color fixing agent in sequence, heating to 50-55° C. at 3-5° C. / min, keeping warm for 10-15 min, draining water, and completing color fixing.

[0026] In the above technical scheme, the present application ensures that the dye evenly penetrates into the cotton fiber through the above dyeing step, giving the fabric a bright and uniform color; through the soaping step, it helps to remove the unfixed dye on the fabric, reducing the color difference and color fastness problems; through the color fixing step, it helps to improve the binding force between the dye and the fiber, and enhance the color fastness and washing resistance of the fabric. Through this series of process flows, the cotton knitted fabric finally prepared not only has a smooth appearance and good anti-pilling performance, but also has a good dyeing effect.

[0027] In the second aspect, the present application provides a smooth cotton knitted fabric adopting the following technical solution: A smooth cotton knitted fabric is prepared by using the preparation process of the smooth cotton knitted fabric as described in the first aspect.

[0028] In the above technical scheme, the present application adopts the preparation process of smooth cotton knitted fabrics, so that the fabrics not only have a smooth appearance and good anti-pilling performance, but also have a good dyeing effect. The surface smoothness and wear resistance of the fabrics are significantly improved, while maintaining the dryness, fluffy performance, softness and moisture absorption and perspiration performance of cotton knitted fabrics. Through the preparation process of the present application, the comprehensive performance of cotton knitted fabrics has been comprehensively improved, meeting the high-quality demand of modern consumers for textiles.

[0029] In summary, this application includes the following beneficial technical effects: The present application optimizes the post-treatment process of cotton knitted fabrics, especially optimizes the wool finishing process and the setting finishing process, further adds aloe extract and isomeric tridecyl alcohol polyoxyethylene ether to the wool bath liquid, and adds triethanolamine oleic acid soap and polyethylene glycol laurate to the setting agent, thereby significantly improving the smoothness, anti-pilling performance and softness of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the process flow chart of Example 1. DETAILED DESCRIPTION

[0031] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0032] The sources of some substances in the following specific implementation methods are shown in Table 1.

[0033] Table 1: Example 1 A process for preparing a smooth cotton knitted fabric, such as Figure 1 As shown, the following process flow is carried out in sequence: pre-production embryo → singeing treatment → cloth boiling → first neutralization → wool finishing → dyeing → second neutralization → soaping → color fixing → cloth loosening and drying → shaping finishing.

[0034] Among them, the specific steps of the pre-embryo process are as follows: The Monfushi eight-section chassis setting machine is used to pre-shape the grey cloth. During the pre-shaping process, the surface temperature of the cloth is controlled at 195°C, the effective baking time of the grey cloth is 20s, the speed of the grey cloth passing through the machine is 45m / min, and the width and weight are: 163cm*175g / m 2 Grey cloth.

[0035] The singeing process steps are as follows: The double-sided singeing method is adopted. On the singeing machine, the upper and lower natural gas burners are opened at the same time, and the grey cloth passes through the middle of the upper and lower burners at a speed of 45m / min until the cotton fiber hairiness on the cloth surface and the bottom of the cloth is fully burned and the singeing process is completed.

[0036] The cloth boiling process specifically includes: Water enters the dye vat, grey cloth enters the vat, water returns to the auxiliary vat, and the bath ratio is controlled at 1:5. First, 1g / L of sodium ethylenediaminetetraacetate, 1g / L of polyoxyethylene stearate, and 1.5g / L of polyacrylamide are added in sequence, and they are directly pumped into the vat. After running for 5 minutes, water returns to the auxiliary vat, and then 2wt% of sodium hydroxide is added and directly pumped into the vat. The temperature is raised to 50℃ and kept warm for 10 minutes. Clean water is then added to the auxiliary vat, and 4wt% of hydrogen peroxide is linearly added over 20 minutes. After the addition, the temperature is raised to 95℃ at 3℃ / min, kept warm for 60 minutes, and finally cooled to 60℃ at 3℃ / min. Drain the water to complete the cloth boiling.

[0037] Wherein, the first neutralization step specifically includes: The dye vat was refilled with water, the bath ratio was controlled at 1:5, the temperature was raised to 80°C at 3°C / min, kept warm for 10 minutes, and the water was drained; the dye vat was refilled with water, the water was returned to the auxiliary vat, 1.5g / L of 95% acetic acid was added, the temperature was raised to 60°C at 3°C / min, kept warm for 10 minutes, and the water was drained to complete the first neutralization.

[0038] Among them, the wool finishing process steps specifically include: Water enters the dye vat, and the bath ratio is controlled at 1:5. Water returns to the auxiliary vat. First, add 0.1g / L of acetic acid, and pump it directly into the vat. Control the pH in the bath to 7, and raise the temperature to 50°C at 4°C / min. Then add clean water to the auxiliary vat, and then add 1.5g / L of cellulase, 0.6g / L of aloe extract, and 0.4g / L of isotridecyl alcohol polyoxyethylene ether in turn. Stir evenly, and pump it directly into the dye vat. Keep warm for 60min, and finally raise the temperature to 95°C at 6°C / min, and keep warm for 10min to kill the cellulase activity. Drain the water to complete the hair feeding.

[0039] The dyeing process steps specifically include: Put water into the dye vat, add clean water to the auxiliary vat, control the bath ratio to 1:5, first add the pre-dissolved reactive dyes CI Reactive Red 1611.5wt%, CI Reactive Brown 212wt% and CI Reactive Black 53wt%, stir evenly, and pump into the dye vat linearly at a uniform speed for 40 minutes. After running for 20 to 30 minutes, add clean water to the auxiliary vat, add 45g / L of sodium sulfate, stir evenly, and pump into the dye vat linearly at a uniform speed for 20 minutes. Run for 10 minutes, then add clean water to the auxiliary vat again, add 20g / L of sodium carbonate, stir evenly, and pump into the dye vat linearly at a uniform speed for 40 minutes. Run for 10 minutes, heat to 60℃ at 1.5℃ / min, keep warm for 30 minutes, then drain and complete dyeing.

[0040] Wherein, the second neutralization step specifically includes: Water enters the dye vat, controlling the bath ratio at 1:5, water returns to the auxiliary vat, adds 3g / L of acetic acid, cold washes for 12 minutes, drains, and completes the second neutralization.

[0041] Wherein, the soaping process step specifically comprises: Water enters the dye vat and returns water to the auxiliary vat, controlling the bath ratio at 1:5, adding 1g / L of polyoxyethylene stearate, raising the temperature to 90℃ at 3℃ / min, keeping warm for 10min, draining the water, and completing soap washing.

[0042] Among them, the color fixing process steps specifically include: Water enters the dye vat and returns water to the auxiliary vat, and the bath ratio is controlled at 1:5. 0.5g / L malic acid and 2wt% of the color fixing agent FIGON1616 are added in sequence, and the temperature is raised to 50℃ at 3℃ / min, and the temperature is kept for 1min. The water is drained to complete the color fixing.

[0043] The process steps of loosening the cloth and drying it specifically include: The grey cloth is taken out from the dye vat, loosened on a cloth loosening machine, and then dried at 110°C in a setting machine until the moisture content of the fabric is less than 5%. The loosening and drying are completed.

[0044] Among them, the shaping and finishing process steps specifically include: Use padding finishing method, first prepare the setting finishing liquid, then pump the setting finishing liquid into the setting machine liquid tank, set the setting temperature to 130℃, the setting speed to 30m / min, and the roller pressure to 4N / cm 2 , complete the shaping and finishing.

[0045] Among them, the formula of the styling finishing liquid is as follows: 16g / L amino silicone oil, 4g / L triethanolamine oleic acid soap, 1.5g / L polyethylene glycol laurate, 0.2g / L malic acid, and the balance is water.

[0046] Example 2 A preparation process for a smooth cotton knitted fabric, which is different from Example 1 in that the following process flow is carried out in sequence: pre-preparation of embryos → singeing treatment → cloth boiling → first neutralization → wool finishing → dyeing → second neutralization → soaping → color fixing → cloth loosening and drying → shaping finishing.

[0047] Among them, the specific steps of the pre-embryo process are as follows: The Monfushi eight-section chassis setting machine is used to pre-shape the grey cloth. During the pre-shaping process, the surface temperature of the cloth is controlled at 205°C, the effective baking time of the grey cloth is 20s, the speed of the grey cloth passing through the machine is 35m / min, and the width and weight are: 163cm*175g / m 2 Grey cloth.

[0048] The singeing process steps are as follows: The double-sided singeing method is adopted. On the singeing machine, the upper and lower natural gas burners are opened at the same time, and the grey cloth passes through the middle of the upper and lower burners at a speed of 40m / min until the cotton fiber hairiness on the cloth surface and the bottom of the cloth is fully burned and the singeing process is completed.

[0049] The cloth boiling process specifically includes: Water enters the dye vat, grey cloth enters the vat, water returns to the auxiliary vat, and the bath ratio is controlled at 1:7. First, 2g / L of sodium ethylenediaminetetraacetate, 1g / L of polyoxyethylene stearate, and 2g / L of polyacrylamide are added in sequence, and they are directly pumped into the vat. After running for 5 minutes, water returns to the auxiliary vat, and then 1wt% of sodium hydroxide is added and directly pumped into the vat. The temperature is raised to 55°C and kept warm for 8 minutes. Clean water is then added to the auxiliary vat, and 2wt% of hydrogen peroxide is linearly added over 15 minutes. After the addition, the temperature is raised to 95°C at 4°C / min, kept warm for 55 minutes, and finally cooled to 55°C at 4°C / min. Drain the water to complete the cloth boiling.

[0050] Wherein, the first neutralization step specifically includes: The dye vat was refilled with water, the bath ratio was controlled at 1:7, the temperature was raised to 70°C at 4°C / min, kept warm for 15 minutes, and the water was drained; the dye vat was refilled with water, the water was returned to the auxiliary vat, 2g / L of 95% acetic acid was added, the temperature was raised to 55°C at 4°C / min, kept warm for 15 minutes, and the water was drained to complete the first neutralization.

[0051] Among them, the wool finishing process steps specifically include: Water enters the dye vat, and the bath ratio is controlled at 1:7. Water returns to the auxiliary vat. First, add 0.1g / L of acetic acid, and pump it directly into the vat. Control the pH in the bath to 6.5, and raise the temperature to 55°C at 3℃ / min. Then add clean water to the auxiliary vat, and then add 1.2g / L of cellulase, 0.8g / L of aloe extract, and 0.5g / L of isotridecyl alcohol polyoxyethylene ether in turn. Stir evenly, and pump it directly into the dye vat. Keep warm for 50 minutes, and finally raise the temperature to 95°C at 5℃ / min, and keep warm for 15 minutes to kill the cellulase activity. Drain the water to complete the hair feeding.

[0052] The dyeing process steps specifically include: Put water into the dye vat, add clean water to the auxiliary vat, control the bath ratio to 1:7, first add the pre-dissolved reactive dyes CI Reactive Red 1611.5wt%, CI Reactive Brown 212wt% and CI Reactive Black 53wt%, stir evenly, and pump into the dye vat linearly at a uniform speed for 40 minutes. After running for 30 minutes, add clean water to the auxiliary vat, add 45g / L of sodium sulfate, stir evenly, and pump into the dye vat linearly at a uniform speed for 30 minutes. Run for 15 minutes, then add clean water to the auxiliary vat again, add 20g / L of sodium carbonate, stir evenly, and pump into the dye vat linearly at a uniform speed for 40 minutes. Run for 15 minutes, heat to 60℃ at 2℃ / min, keep warm for 40 minutes, then drain and complete dyeing.

[0053] Wherein, the second neutralization step specifically includes: Put water into the dye vat, control the bath ratio at 1:7, return water to the auxiliary vat, add 2.5g / L acetic acid, cold wash for 10 minutes, drain, and complete the second neutralization.

[0054] Wherein, the soaping process step specifically comprises: Water enters the dye vat and returns water to the auxiliary vat, controlling the bath ratio at 1:7, adding 3g / L of polyoxyethylene stearate, raising the temperature to 90℃ at 5℃ / min, keeping warm for 15min, draining the water, and completing soap washing.

[0055] Among them, the color fixing process steps specifically include: Water enters the dye vat and returns water to the auxiliary vat, and the bath ratio is controlled at 1:7. 0.5g / L malic acid and 5wt% color fixing agent FIGON1616 are added in sequence, and the temperature is raised to 55℃ at 5℃ / min. The temperature is kept at this temperature for 10min, and the water is drained to complete the color fixing.

[0056] The process steps of loosening the cloth and drying it specifically include: The grey cloth is taken out from the dye vat, loosened on a cloth loosening machine, and then dried at 130°C in a setting machine until the moisture content of the fabric is less than 5%. The loosening and drying are completed.

[0057] Among them, the shaping and finishing process steps specifically include: Use padding finishing method, first prepare the setting finishing liquid, then pump the setting finishing liquid into the setting machine liquid tank, set the setting temperature to 130℃, the setting speed to 25m / min, and the roller pressure to 3N / cm 2 , complete the shaping and finishing.

[0058] Among them, the formula of the styling finishing liquid is as follows: 18g / L amino silicone oil, 3g / L triethanolamine oleic acid soap, 2g / L polyethylene glycol laurate, 0.3g / L malic acid, and the balance is water.

[0059] Example 3 A preparation process for a smooth cotton knitted fabric, which is different from Example 1 in that the following process flow is carried out in sequence: pre-preparation of embryos → singeing treatment → cloth boiling → first neutralization → wool finishing → dyeing → second neutralization → soaping → color fixing → cloth loosening and drying → shaping finishing.

[0060] Among them, the specific steps of the pre-embryo process are as follows: The Monfushi eight-section chassis setting machine is used to pre-shape the grey cloth. During the pre-shaping process, the surface temperature of the cloth is controlled at 200°C, the effective baking time of the grey cloth is 20s, the speed of the grey cloth passing through the machine is 40m / min, and the width and weight are: 163cm*175g / m 2 Grey cloth.

[0061] The singeing process steps are as follows: The double-sided singeing method is adopted. On the singeing machine, the upper and lower natural gas burners are opened at the same time, and the grey cloth passes through the middle of the upper and lower burners at a speed of 50m / min until the cotton fiber hairiness on the cloth surface and the bottom of the cloth is fully burned and the singeing process is completed.

[0062] The cloth boiling process specifically includes: Water enters the dye vat, grey cloth enters the vat, water returns to the auxiliary vat, and the bath ratio is controlled at 1:4. First, 1g / L of sodium ethylenediaminetetraacetate, 2g / L of polyoxyethylene stearate, and 1g / L of polyacrylamide are added in sequence, and they are directly pumped into the vat. After running for 8 minutes, water returns to the auxiliary vat, and then 3wt% of sodium hydroxide is added and directly pumped into the vat. The temperature is raised to 45℃ and kept warm for 12 minutes. Clean water enters the auxiliary vat, and 4wt% of hydrogen peroxide is linearly added for 25 minutes. After the addition, the temperature is raised to 90℃ at 3℃ / min, kept warm for 65 minutes, and finally cooled to 60℃ at 3℃ / min. Drain the water to complete the cloth boiling.

[0063] Among them, the first neutralization specifically includes: The dye vat was refilled with water, the bath ratio was controlled at 1:4, the temperature was raised to 80°C at 3°C / min, kept warm for 10 minutes, and the water was drained; the dye vat was refilled with water, the water was returned to the auxiliary vat, 1g / L of 95% acetic acid was added, the temperature was raised to 60°C at 3°C / min, kept warm for 10 minutes, and the water was drained to complete the first neutralization.

[0064] Among them, the wool finishing process steps specifically include: Water enters the dye vat, and the bath ratio is controlled at 1:4. Water returns to the auxiliary vat. First, add 0.2g / L of acetic acid, and pump it directly into the vat. Control the pH in the bath to 7.5, and raise the temperature to 50°C at 5℃ / min. Then add clean water to the auxiliary vat, and then add 1.5g / L of cellulase, 0.5g / L of aloe extract, and 0.2g / L of isotridecyl alcohol polyoxyethylene ether in turn. Stir evenly, and pump it directly into the dye vat. Keep warm for 60min, and finally raise the temperature to 90℃ at 4℃ / min, and keep warm for 10min to kill the cellulase activity. Drain the water to complete the wool eating.

[0065] The dyeing process steps specifically include: Put water into the dye vat, add clean water to the auxiliary vat, control the bath ratio to 1:4, first add the pre-dissolved reactive dyes CI Reactive Red 1611.5wt%, CI Reactive Brown 212wt% and CI Reactive Black 53wt%, stir evenly, and pump into the dye vat linearly at a uniform speed for 60 minutes. After running for 20 minutes, add clean water to the auxiliary vat, add 55g / L of sodium sulfate, stir evenly, and pump into the dye vat linearly at a uniform speed for 20 minutes. Run for 10 minutes, then add clean water to the auxiliary vat again, add 30g / L of sodium carbonate, stir evenly, and pump into the dye vat linearly at a uniform speed for 60 minutes. Run for 10 minutes, heat to 55℃ at 1℃ / min, keep warm for 30 minutes, then drain and complete dyeing.

[0066] Wherein, the second neutralization step specifically includes: Put water into the dye vat, control the bath ratio at 1:4, return water to the auxiliary vat, add 1.5g / L acetic acid, cold wash for 15 minutes, drain, and complete the second neutralization.

[0067] Wherein, the soaping process step specifically comprises: Water enters the dye vat and returns water to the auxiliary vat, controlling the bath ratio at 1:4, adding 1g / L of polyoxyethylene stearate, raising the temperature to 95℃ at 3℃ / min, keeping warm for 10min, draining the water, and completing soap washing.

[0068] Among them, the color fixing process steps specifically include: Water enters the dye vat and returns water to the auxiliary vat, controlling the bath ratio at 1:4, adding malic acid 0.3g / L and color fixing agent FIGON16161wt% in sequence, raising the temperature to 50℃ at 3℃ / min, keeping warm for 15min, draining the water, and completing the color fixing.

[0069] The process steps of loosening the cloth and drying it specifically include: The grey cloth is taken out from the dye vat, loosened on a cloth loosening machine, and then dried at 120°C in a setting machine until the moisture content of the fabric is less than 5%. The loosening and drying are completed.

[0070] Among them, the shaping and finishing process steps specifically include: Use padding finishing method, first prepare the setting finishing liquid, then pump the setting finishing liquid into the setting machine pad tank, set the setting temperature to 140℃, the setting speed to 20m / min, and the roller pressure to 5N / cm 2 , complete the shaping and finishing.

[0071] Among them, the formula of the styling finishing liquid is as follows: 15g / L amino silicone oil, 5g / L triethanolamine oleic acid soap, 1g / L polyethylene glycol laurate, 0.1g / L malic acid, and the balance is water.

[0072] Comparative Example 1 A preparation process for a cotton knitted fabric, which is different from Example 1 in that in the wool finishing process step, an equal amount of aloe vera extract is replaced by grape seed extract.

[0073] Comparative Example 2 A preparation process for a cotton knitted fabric, which is different from Example 1 in that in the wool finishing process step, an equal amount of isomeric tridecanol polyoxyethylene ether is replaced by sodium dodecyl sulfate.

[0074] Comparative Example 3 A preparation process for a cotton knitted fabric, which is different from Example 1 in that in the shaping and finishing process step, an equal amount of triethanolamine oleic acid soap is replaced by polyethylene glycol 400.

[0075] Comparative Example 4 A preparation process for a cotton knitted fabric, which is different from Example 1 in that in the shaping and finishing process step, an equal amount of polyethylene glycol laurate is replaced by polyoxyethylene octyl phenyl ether.

[0076] Performance Testing Sample: the cotton knitted fabrics of the above embodiments and comparative examples.

[0077] The smoothness and softness of the samples were tested using a PhabrOmeter hand feel tester, the wear resistance of the fabric was tested using a YG522 fabric flat grinding instrument, the pilling grade of the samples was tested using a YG502 fabric pilling instrument, and the moisture permeability of the fabric was tested in a YG501D moisture permeability test box. The above test results are shown in Table 2.

[0078] Table 2: Combined with the analysis of Examples 1-3 and Comparative Examples 1 to 4, it can be seen that the cotton knitted fabrics of Examples 1 to 3 perform well in terms of smoothness, softness, abrasion resistance, pilling grade and moisture permeability. This shows that the present application significantly improves the smoothness, anti-pilling performance and softness of the fabric by optimizing the wool finishing and setting finishing processes, especially by further adding aloe extract and isomeric tridecyl alcohol polyoxyethylene ether to the wool bath liquid, and by adding triethanolamine oleic acid soap and lauric acid polyethylene glycol ester to the setting agent, thereby significantly improving the comprehensive performance of the cotton knitted fabric.

[0079] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed. However, as long as it is within the scope of the claims of the present application, it shall be protected by the patent law.

Claims

1. A process for preparing a smooth cotton knitted fabric, characterized in that: The process includes the following steps: pre-production of embryos → singeing → cloth boiling → wool finishing → dyeing → soaping → color fixing → loosening and drying → shaping finishing; The wool feeding finishing adopts an immersion finishing method, the bath ratio is 1: (4-7), the wool feeding temperature is 50-55°C, the wool feeding time is 55-65 minutes, and the formula of the wool feeding bath liquid includes: 1.2-1.5 g / L of cellulase, 0.5-0.8 g / L of aloe extract, 0.2-0.5 g / L of isomeric tridecanol polyoxyethylene ether, 0.1-0.2 g / L of organic acid, and the balance is water; The shaping and finishing adopts a padding and finishing method, the shaping temperature is 130-140°C, the shaping speed is 20-30m / min, and the roller pressure is 3-5N / cm 2 The formula of the styling finishing liquid includes: amino silicone oil 15~18g / L, triethanolamine oleic acid soap 3~5g / L, lauric acid polyethylene glycol ester 1~2g / L, organic acid 0.1~0.3g / L, and the balance is water.

2. The process for preparing a smooth cotton knitted fabric according to claim 1, characterized in that: The singeing treatment adopts a double-sided singeing method, and the singeing speed is 40-50m / min.

3. The process for preparing a smooth cotton knitted fabric according to claim 1, characterized in that: The cloth is boiled by immersion treatment, the bath ratio is 1: (4-7), the cloth boiling temperature is 95-105°C, the cloth boiling time is 40-60min, and the formula of the cloth boiling bath liquid includes: chelating agent 1-2g / L, emulsifying dispersant 1-2g / L, stabilizer 1-2g / L, caustic soda 1-3wt%, hydrogen peroxide 2-4wt%, and the balance is water.

4. The process for preparing a smooth cotton knitted fabric according to claim 1, characterized in that: The process steps of loosening and drying specifically include: loosening the cotton knitted fabric, and then drying it at a temperature of 110-130° C. until the moisture content of the fabric is less than 5%.

5. The process for preparing a smooth cotton knitted fabric according to claim 1, characterized in that: The dyeing adopts an immersion dyeing method, with a bath ratio of 1: (4-7), and the dyeing bath formula includes: 0.1-0.2 g / L of organic acid, 1-10 wt% of dye, 45-55 g / L of dyeing accelerator, 20-30 g / L of pH regulator, and the balance is water.

6. The process for preparing a smooth cotton knitted fabric according to claim 1, characterized in that: The soap washing adopts an immersion washing method, with a bath ratio of 1: (4-7), and the soap washing bath liquid formula includes 1-5g / L of soaping agent and the balance is water.

7. The process for preparing a smooth cotton knitted fabric according to claim 1, characterized in that: The color fixing adopts an immersion finishing method, with a bath ratio of 1: (4-7), and the formula of the color fixing bath liquid includes 1-5wt% of a color fixing agent, 0.3-0.5g / L of an organic acid, and the balance is water.

8. A smooth cotton knitted fabric, characterized in that: The smooth cotton knitted fabric is prepared by the preparation process of the smooth cotton knitted fabric as described in any one of claims 1 to 7.

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