Processing technology of pure cotton home textile fabric and pure cotton home textile fabric

Abstract

The invention provides a processing technology of a pure cotton home textile fabric and the pure cotton home textile fabric, and relates to the technical field of textile materials. The processing technology comprises the following steps: providing gray fabric; the gray fabric is subjected to singeing treatment, enzyme desizing treatment and scouring and bleaching treatment; carrying out alkali mercerizing treatment on the gray fabric; placing the gray fabric in a washing machine, enabling the wet gray fabric to beat and impact a grid, and spraying a cellulase treatment solution to the gray fabric at the same time; and carrying out first calendaring treatment, preshrinking treatment and second calendaring treatment on the gray fabric. The processing technology is simple, reliable and convenient to implement, the prepared pure cotton home textile fabric has good moisture absorption and sweat releasing performance and soft performance, and the moisture absorption and sweat releasing performance and the soft performance are kept good after multiple times of washing.

Description

Technical Field

[0001] The present invention relates to the technical field of textile materials, and particularly relates to a processing technology for pure cotton home textile fabrics and pure cotton home textile fabrics. Background Art

[0002] After the fabric is subjected to printing and dyeing processing, its hand feeling becomes rough and hard. In order to improve the hand feeling and drapability of the fabric, soft finishing is often required. There are two methods for fabric soft finishing: mechanical finishing and chemical finishing. Mechanical finishing is achieved by repeatedly kneading and bending the fabric, and its effect is temporary. Chemical finishing is to apply chemical reagents (softeners) on the fabric to reduce the friction coefficient between fibers and yarns, thereby obtaining a soft and smooth hand feeling. Commonly used existing softeners include substances such as silicone compounds, surfactants, paraffin wax, and oils. The above softeners are deposited on the fabric surface to form a lubricating layer, making the fabric have the characteristic of soft hand feeling. However, the lubricating layer formed on the fabric surface greatly reduces the moisture absorption of pure cotton fabrics, and the softening effect also decreases rapidly after multiple washes. Summary of the Invention

[0003] In view of the above problems existing in the prior art, the present invention provides a processing technology for pure cotton home textile fabrics and pure cotton home textile fabrics to improve the moisture absorption, softness, and washability of pure cotton home textile fabrics.

[0004] To achieve the above object and other related objects, the first aspect of the present invention provides a processing technology for pure cotton home textile fabrics, and the processing technology includes the following steps:

[0005] Provide greige cloth;

[0006] Perform singeing treatment, enzyme desizing treatment, and scouring and bleaching treatment on the greige cloth;

[0007] Perform caustic mercerization treatment on the greige cloth;

[0008] Place the greige cloth in a washing machine, make the wet greige cloth pat and impact the grille, and simultaneously spray a cellulase treatment solution on the greige cloth;

[0009] Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the greige cloth.

[0010] In an embodiment of the present invention, placing the greige cloth in a washing machine, making the wet greige cloth pat and impact the grille, and simultaneously spraying a cellulase treatment solution on the greige cloth includes the following steps:

[0011] Jet airflows above and below the greige fabric respectively to make the wet greige fabric impact the grille, and at the same time spray the atomized cellulase treatment solution onto the greige fabric through nozzles on both the upper and lower sides of the greige fabric; wherein, the speed of the washing machine is 12 - 30 m / min, the flow rate of the airflows is 100 - 500 m / min, the angle between the nozzle and the greige fabric is 90 - 160°, the concentration of the cellulase is 20 - 50 g / L, the pH value of the cellulase treatment is 5 - 7, and the treatment time is 20 - 40 min.

[0012] In an embodiment of the present invention, after spraying the cellulase treatment solution onto the greige fabric, the processing process further includes impregnating the greige fabric in an alkaline solution, the pH value of the alkaline solution is 9 - 10, the temperature of the alkaline solution is 80 - 85 °C, and the treatment time is 10 - 15 min.

[0013] In an embodiment of the present invention, the singeing treatment is a front and back opposite singeing treatment, the flame temperature of the singeing treatment is 800 - 880 °C, and the speed of the singeing treatment is 120 - 150 m / min.

[0014] In an embodiment of the present invention, the enzymatic desizing treatment includes the following steps: Immerse the greige fabric in deionized water at 75 - 95 °C for 3 - 5 min, then immerse the greige fabric in the enzymatic desizing treatment solution for two dips and two rolls, the liquor pickup rate is 90 - 120 wt%, stack and wind the fabric at 45 - 55 °C for 4 - 6 h, wash the greige fabric in water at 90 - 100 °C for 6 - 10 min, wash 2 - 3 times, and dry after washing.

[0015] In an embodiment of the present invention, the enzymatic desizing treatment solution includes any one or more of α - amylase, glucoamylase, debranching enzyme, polyvinyl alcohol degrading enzyme, and cellulase, and the pH value of the enzymatic desizing treatment solution is 5.5 - 7.0.

[0016] In an embodiment of the present invention, the scouring and bleaching treatment includes a scouring treatment and an oxygen bleaching treatment. The scouring treatment includes the following steps: Place the greige fabric after the enzymatic desizing treatment in the scouring treatment solution and treat it at 90 - 110 °C for 50 - 60 min; the oxygen bleaching treatment includes the following steps: Place the greige fabric after the scouring treatment in the oxygen bleaching solution, heat the oxygen bleaching solution from 1 - 3 °C / min to 90 - 110 °C and keep it warm for 30 - 60 min, adjust the pH value of the oxygen bleaching solution to neutral after the insulation ends and then take it out and wash it clean; wherein, the scouring treatment solution includes: 30 - 50 g / L of NaOH, 2 - 5 g / L of complexing agent, 3 - 10 g / L of refining agent; the oxygen bleaching solution includes 4 - 8 g / L of hydrogen peroxide, 1 - 3 g / L of penetrant JFC, 2 - 12 g / L of hydrogen peroxide stabilizer, 0.2 - 3 g / L of NaOH.

[0017] In an embodiment of the present invention, the caustic mercerization treatment includes the following steps: First, dip the grey cloth in caustic liquor, and then perform stretching, width expanding, rinsing, flat washing, and water squeezing and drying on the grey cloth; wherein, the concentration of the caustic liquor is 170-230 g / L.

[0018] In an embodiment of the present invention, the vehicle speed during the first calendering treatment is 70-90 m / min, the temperature of the first calendering treatment is 100-115 °C, and the linear pressure is 150-180 N / mm; the pre-shrinking treatment is to send the grey cloth after the first calendering treatment into a pre-shrinking machine, the pressure of the pressure-bearing roller of the pre-shrinking machine is 12-15 kg, the temperature of the pre-shrinking treatment is 100-120 °C, and the vehicle speed of the pre-shrinking machine is 25-60 m / min; the vehicle speed of the second calendering treatment is 60-70 m / min, the temperature of the second calendering treatment is 90-100 °C, and the linear pressure is 180-200 N / mm.

[0019] The second aspect of the present invention provides a pure cotton home textile fabric, which is made according to the above processing technology.

[0020] The processing technology of the pure cotton home textile fabric provided by the present invention first performs pretreatment such as singeing treatment, enzymatic desizing treatment, and scouring and bleaching treatment on the grey cloth, then performs caustic mercerization treatment on the grey cloth, and subsequently places the grey cloth after caustic mercerization treatment in a washing machine, so that the wet grey cloth beats and impacts the grid, and at the same time sprays a cellulose enzyme treatment solution in an atomized state onto the grey cloth, and performs the first calendering treatment, pre-shrinking treatment, and second calendering treatment on the grey cloth. Through a bio-physical synergistic action system, cellulose enzyme polishing is used to remove the hairiness on the surface of the yarn and inside the fabric, spraying the cellulose enzyme treatment solution makes the fibers fully softened, enzymatic hydrolysis generates nano-scale fiber fibrillation, the water flow shear force opens the hydrogen bonds between the fibers, forming a three-dimensional curly network structure, and the processing of the grey cloth by the loose small-tension processing and the relatively large amount of rubbing and collision during the processing can greatly improve the softness of the fabric. The pure cotton home textile fabric prepared by this application has a soft hand feeling, good water absorption and air permeability, an excellent quick-drying effect, still has quite good softness after multiple washes, and the comfort, moisture absorption, and moisture wicking of the home textile fabric are well maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other embodiments can be obtained based on these drawings without creative efforts.

[0022] Figure 1This is the preparation flow chart of the processing technology of the pure cotton home textile fabric of the present invention in an embodiment. Detailed implementation manners

[0023] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present invention are for describing specific specific implementation manners, rather than limiting the protection scope of the present invention. The test methods without specific conditions noted in the following embodiments are usually in accordance with conventional conditions or in accordance with the conditions recommended by each manufacturer.

[0024] When the embodiments give a numerical range, it should be understood that unless otherwise stated in the present invention, both endpoints of each numerical range and any one numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention, based on the understanding of those skilled in the art of the prior art and the description of the present invention, can also use any methods, devices and materials of the prior art similar or equivalent to the methods, devices and materials in the embodiments of the present invention to implement the present invention.

[0025] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, rather than used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present invention.

[0026] When softening fabrics in the prior art, silicone softeners are generally selected. Silicone softeners can be divided into non-reactive, reactive, and modified silicones, etc. Non-reactive silicone softeners do not undergo cross-linking reactions themselves nor react with fibers, and their softening finishing effects are not wash-resistant. Reactive silicone softeners contain reactive groups and can chemically react with fibers to form a film, with better wash resistance. Among reactive silicone softeners, amino silicone softeners are the most prominent. Amino silicone softeners are currently ideal softeners for softening finishing of pure cotton home textile fabrics. Although such softeners can improve the fabric handfeel, they have obvious drawbacks. The molecular structure of amino silicone softeners presents a helical structural feature, with hydrophobic methyl groups tightly surrounding the siloxane main chain, giving it extremely low surface tension and excellent hydrophobicity. When treating fabrics with amino silicone softeners, a small part of the softener molecules penetrate into the fiber interior, and most of the softener molecules adhere to the fiber surface to form a silicone oil film layer, thus making the finished fabric hydrophobic. The silicone oil film layer seals the pores on the fiber surface, resulting in a decrease in the moisture absorption rate of natural fabrics such as cotton and linen. When used next to the skin, it feels damp and stuffy, and the feel of the silicone oil film layer is rather slippery, with poor comfort. The hydrophobic characteristics of amino silicone softeners also reduce the soil removability of the fabric and hinder the washing effect. After multiple washes, the silicone oil is prone to falling off, resulting in a sharp decline in the fabric luster and handfeel. After being treated with the softener, the strength loss of the grey cloth exceeds 20%.

[0027] To solve the contradiction between softness and moisture absorption, there are mainly two existing technical solutions: one is to compound multiple post-finishing auxiliaries, but the compounding of auxiliaries needs to consider the compatibility performance of each auxiliary; the other is to improve the hydrophilic property of silicone oil through hydrophilic block-modified silicone softeners. The inventor has found through a large number of experiments that neither modification nor compounding can solve the problem that the handfeel of the fabric treated with silicone softeners is slippery and unnatural. In addition, after the finished fabric is washed, the softness and glossiness decrease significantly, with a large difference before and after washing, and the fabric treated with silicone softeners also has the risk of high-temperature yellowing. Moreover, the softening performance of the fabric treated with silicone softeners decreases after washing, and it is difficult to achieve long-term softening treatment of the fabric. To solve the above problems, the present application provides a processing technology for pure cotton home textile fabrics and pure cotton home textile fabrics.

[0028] Please refer to Figure 1 , the processing technology of the home textile fabric provided by the present application includes the following steps:

[0029] S1. Provide grey cloth;

[0030] S2. Singe the grey cloth, perform enzyme desizing treatment and scouring and bleaching treatment;

[0031] S3. Perform caustic mercerization treatment on the grey cloth;

[0032] S4. Place the greige fabric in a washing machine, let the wet greige fabric beat and impact the grille, and simultaneously spray the cellulase treatment liquid onto the greige fabric;

[0033] S5. Conduct the first calendering treatment, pre-shrinking treatment, and second calendering treatment on the greige fabric.

[0034] In step S1, the greige fabric undergoes fabric inspection and seam joining treatments. Exemplarily, the greige fabric selected is the one after spinning and weaving Xinjiang long-staple cotton.

[0035] In step S2, the singeing treatment is a double-sided singeing treatment. The flame temperature of the singeing treatment is 800 - 880 °C, such as any value within 800 - 880 °C like 800 °C, 850 °C, or 880 °C, etc.; the running speed of the singeing treatment is 120 - 150 m / min, such as any value within 120 - 150 m / min like 120 m / min, 130 m / min, 140 m / min, or 150 m / min, etc.

[0036] In some embodiments of the present application, the enzymatic desizing treatment includes the following steps: Immerse the greige fabric after singeing treatment in deionized water at 75 - 95 °C for 3 - 5 min, then immerse and pad the greige fabric in the enzymatic desizing treatment liquid twice, with the padding rate being 90 - 120 wt%, stack and wind it at a temperature of 45 - 55 °C for 4 - 6 h, wash the greige fabric in water at a temperature of 90 - 100 °C for 6 - 10 min, wash it 2 - 3 times, and dry it after washing. The washing can inactivate the enzymatic desizing treatment liquid. Exemplarily, the enzymatic desizing treatment liquid includes any one or more of α - amylase, glucoamylase, debranching enzyme, polyvinyl alcohol degrading enzyme, and cellulase, and the pH value of the enzymatic desizing treatment liquid is 5.5 - 7.0, such as 5.5, 6, or 7.

[0037] In some embodiments of the present application, the scouring and bleaching treatment includes a scouring treatment and an oxygen bleaching treatment. The scouring treatment includes the following steps: placing the greige fabric after enzymatic desizing treatment in a scouring treatment solution, and treating it at a temperature of 90 - 110°C for 50 - 60 min. For example, the temperature of the scouring treatment can be any value in 90 - 110°C such as 90°C, 100°C or 110°C, and the time of the scouring treatment can be any value in 50 - 60 min such as 50 min, 55 min or 60 min. The oxygen bleaching treatment includes the following steps: placing the greige fabric after scouring treatment in an oxygen bleaching solution, heating the oxygen bleaching solution to 90 - 110°C at a rate of 1 - 3°C / min and holding for 30 - 60 min. For example, the heating rate is any value in 1 - 3°C / min such as 1°C / min, 2°C / min or 3°C / min, the holding temperature is any value in 90 - 110°C such as 90°C, 100°C or 110°C, and the holding time is any value in 30 - 60 min such as 30 min, 50 min or 60 min. After the holding is completed, the pH value of the oxygen bleaching solution is adjusted to neutral and then taken out and washed. Exemplarily, the scouring treatment solution includes: 30 - 50 g / L of NaOH, 2 - 5 g / L of complexing agent, 3 - 10 g / L of refining agent; the oxygen bleaching solution includes 4 - 8 g / L of hydrogen peroxide, 1 - 3 g / L of penetrant JFC, 2 - 12 g / L of hydrogen peroxide stabilizer, 0.2 - 3 g / L of NaOH.

[0038] In step S3, the caustic mercerization treatment includes the following steps: first impregnating and padding the greige fabric after scouring and bleaching treatment with a caustic solution, and then carrying out tentering, width expanding, rinsing and flat washing on the greige fabric.

[0039] In some embodiments of the present application, a cloth clip mercerizing machine commonly used in the art is selected for the caustic mercerization treatment. Exemplarily, the caustic solution is a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 170 - 230 g / L, such as any value in 170 - 230 g / L like 170 g / L, 200 g / L or 230 g / L. After the width expanding treatment is completed, most of the residual caustic solution on the home textile fabric is first rinsed off by rinsing, and then the greige fabric is placed in a water washing box for flat washing. Exemplarily, the temperature during rinsing is 90 - 95°C, such as any value in 90 - 95°C like 90°C, 93°C or 95°C. During flat washing, the greige fabric is successively washed step by step through 2 - 4 water washing boxes. The temperature of the first-stage water washing box is 80 - 85°C, such as any value in 80 - 85°C like 80°C, 83°C or 85°C, and the temperature of the next-stage water washing box is 5 - 10°C lower than the previous stage, such as any value in 5 - 10°C like 5°C, 8°C or 10°C.

[0040] In step S4, the alkali-mercerized blank is placed in a washing machine, and airflows are sprayed above and below the blank to make the wet blank impact the grille, and at the same time, a cellulase treatment solution is sprayed onto the blank through nozzles on both the upper and lower sides of the blank. Here, the blank is laid flat, and the upper and lower sides respectively refer to the upper and lower sides of the large surface of the blank.

[0041] The blank moves back and forth along its length direction under the blowing of the high-speed airflow, and the blank as a whole moves in the direction from the cloth-feeding storage trough to the cloth-discharging storage trough in the washing machine. In some embodiments, the speed of the washing machine is 12 - 30 m / min, such as any value in 12 - 30 m / min like 12 m / min, 20 m / min, or 30 m / min, etc., to ensure the coherence and stability of the entire treatment process. A grille is provided in the washing machine, and the wet blank impregnated with the cellulase treatment solution repeatedly impacts the grille under the blowing of the high-speed airflow, and the flow rate of the airflow is 100 - 500 m / min, such as any value in 100 - 500 m / min like 100 m / min, 300 m / min, or 500 m / min, etc. The liquid levels of the cloth-feeding storage trough and the cloth-discharging storage trough are 900 - 1200 L, such as any value in 900 - 1200 L like 900 L, 1000 L, or 1200 L, etc. Exemplarily, the liquid feeding amount of the washing machine is 45 - 68 L / m, such as any value in 45 - 68 L / m like 45 L / m, 60 L / m, or 68 L / m, etc. That is, 45 - 68 L of the cellulase treatment solution is added per meter of the blank.

[0042] In some embodiments, the angle between the nozzle and the blank is 90 - 160°, such as any value in 90 - 160° like 90°, 120°, or 160°, etc. At this time, the number of nozzles is not limited. Exemplarily, the number of nozzles is 4, and two nozzles are respectively arranged on both the upper and lower sides of the blank, and the spraying ranges of the two nozzles can completely cover the width of the blank. The cloth-feeding storage trough and the cloth-discharging storage trough are connected, and the cellulase treatment solution dripping from the blank falls into the cloth-feeding storage trough and the cloth-discharging storage trough, and the nozzle sprays the blank again to realize the recycling of the cellulase treatment solution. The nozzle pressure is controlled by a variable-frequency water pump. For example, the maximum frequency of the water pump motor is 50 Hz, and it is set to 20 - 80% of the maximum frequency.

[0043] The atomization treatment of the treatment liquid by the nozzle can: Improve uniformity: The atomized treatment liquid can be more evenly distributed on the fabric surface, enabling the cellulase to act on the fabric more uniformly, which helps to improve the consistency and uniformity of the polishing effect. Enhance penetrability: The fine liquid droplets are more likely to penetrate into the internal structure of the fabric, allowing the cellulase to better contact the voids between the fibers, thereby improving its working efficiency. Reduce consumption: Since the atomization technology can make the liquid exist in a very tiny form, compared with the traditional dipping or padding methods, the usage amount will be greatly reduced, saving costs and reducing environmental pollution. Speed up the reaction rate: When the cellulase is atomized into extremely small particles, the contact area with air is increased, which helps to improve the activation efficiency of the cellulase, thus possibly shortening the entire treatment time. Improve the hand feeling: By controlling the atomization degree and the application method (application angle and intensity), the softness and other physical properties of the final product can be adjusted to a certain extent, and then a better hand feeling can be obtained.

[0044] In some embodiments, the concentration of the cellulase treatment liquid is 20 - 50 g / L, such as any value in 20 - 50 g / L like 20 g / L, 30 g / L, 40 g / L or 50 g / L, etc. The pH value of the cellulase treatment liquid is 5 - 7, such as any value in 5 - 7 like pH can be 5, 6 or 7, etc., the treatment time is 20 - 40 min, such as any value in 20 - 40 min like 20 min, 30 min or 40 min, etc. The temperature of the cellulase treatment liquid is 50 - 55 °C, such as any value in 50 - 55 °C like 50 °C, 52 °C or 55 °C, etc. Exemplarily, the cellulase treatment liquid selects the CAN enzyme of Genencor.

[0045] The liquid combines with a high-speed air flow to form a continuous spray that is sprayed onto the fabric, causing the fabric to always maintain a uniformly moist state for flapping and impact. At the same time, it is placed under the injection of a cellulase treatment solution, enabling the cellulase to continuously enter and exit the inside and outside of the yarn. The natural cellulose fabric repeatedly impacts with the grid under the impact of the high-frequency flowing liquid, allowing the cellulase to fully enter the fabric for action. During this process, the cellulase repeatedly shuttles along the thickness direction of the fabric inside the fabric (shearing action of the spray), with high-speed exchange, so as to achieve the full reaction of the fabric with the cellulase under the action of strong mechanical force. The role of cellulase is to catalytically hydrolyze cellulose. Under the conditions of the biopolishing process, the cellulase and mechanical impact act simultaneously, and its hydrolysis effect weakens the microfibrils on the fiber surface, and the fluff is removed under the cooperation of machinery and liquid flow, so as to achieve the purpose of biopolishing the fabric. The dyeing and finishing process of this application can take into account the sufficiency of cellulase treatment and the slack treatment, eliminate the internal stress inside the fabric, release the fluffiness of the fabric, and thus increase the softness of the fabric. At the same time, due to the shearing action of the cooperation between the spray and the grid, the gas (air) and the cellulase treatment solution (biological enzyme polishing finishing solution) are fully mixed to form mist-like microdroplets, increasing the contact area between the cellulase and the fabric. Under the hot and humid conditions, using the chemical action of biopolishing and superimposing the shearing action of the nozzle and the grid, the internal stress in the fabric is eliminated, so as to achieve the effect of increasing the soft, smooth handfeel and elasticity of the fabric. The magnitude of the shearing force is related to the angle between the nozzle and the greige cloth. When the angle between the nozzle and the greige cloth is 90°, the shearing force generated by the cellulase treatment solution is the largest, and the cellulase is more likely to penetrate into the greige cloth.

[0046] After spraying the cellulase treatment solution onto the greige cloth, the greige cloth is immersed in an alkaline solution for treatment to inactivate the cellulase. Exemplarily, the alkaline solution is selected as a sodium carbonate solution, the pH value of the alkaline solution is 9 to 10, such as any value in 9 to 10 like 9, 9.5 or 10, the temperature of the alkaline solution is 80 to 85 °C, such as any value in 80 to 85 °C like 80 °C, 83 °C or 85 °C, and the inactivation time of the cellulase is 10 to 15 min, such as any value in 10 to 15 min like 10 min, 13 min or 15 min. After inactivating the cellulase, the greige cloth is subjected to a water washing treatment. Exemplarily, the temperature of the water washing treatment is 50 to 60 °C, such as any value in 50 to 60 °C like 50 °C, 55 °C or 60 °C.

[0047] In step S5, in some embodiments, the speed of the first calendering treatment is 70 - 90 m / min, such as any value within 70 - 90 m / min like 70 m / min, 80 m / min, or 90 m / min. The temperature of the first calendering treatment is 100 - 115 °C, such as any value within 100 - 115 °C like 100 °C, 110 °C, or 115 °C; the linear pressure is 150 - 180 N / mm, such as any value within 150 - 180 N / mm like 150 N / mm, 160 N / mm, 170 N / mm, or 180 N / mm. The pre-shrinking treatment is to feed the calendered fabric of the first calendering treatment into a pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 12 - 15 kg, such as any value within 12 - 15 kg like 12 kg, 13 kg, 14 kg, or 15 kg, the temperature of the pre-shrinking treatment is 100 - 120 °C, such as any value within 100 - 120 °C like 110 °C, 110 °C, or 120 °C, and the speed of the pre-shrinking machine is 25 - 60 m / min, such as any value within 25 - 60 m / min like 25 m / min, 40 m / min, 50 m / min, or 60 m / min. The speed of the second calendering treatment is 60 - 70 m / min, such as any value within 60 - 70 m / min like 60 m / min, 65 m / min, or 70 m / min, the temperature of the second calendering treatment is 90 - 100 °C, such as any value within 90 - 100 °C like 90 °C, 95 °C, or 100 °C, and the linear pressure is 180 - 200 N / mm, such as any value within 180 - 200 N / mm like 180 N / mm, 190 N / mm, or 200 N / mm.

[0048] In some embodiments, after the alkali mercerization treatment of the fabric, the processing technology further includes a tentering pre-setting treatment of the fabric. The tentering pre-setting acts on the fabric synchronously with high-temperature hot air and mechanical tension to ensure the consistency of the width dimension in subsequent processing. The tentering pre-setting treatment can adjust the fabric width, improve the flatness and handle, and at the same time enhance the dyeing and printing uniformity, and correct the wrinkles caused by the previous processes (such as bleaching and mercerization), laying a foundation for stable subsequent production.

[0049] In some embodiments, the processing technology further includes a dyeing treatment or a printing treatment of the fabric. Among them, the dyeing treatment or the printing treatment can be before or after spraying the cellulase treatment solution on the fabric. If the dyeing treatment or the printing treatment is before spraying the cellulase treatment solution on the fabric, the color of the fabric after dyeing or printing will become lighter, so attention should be paid to the color shade after lightening when matching the color.

[0050] The present application also provides a pure cotton home textile fabric, which is obtained by the above-mentioned processing technology. The processing technology of the present application is simple and reliable, and is easy to implement. The pure cotton home textile fabric has a soft hand feeling, significantly improved hygroscopicity, natural flexibility in hand feeling, good hand feeling, high comfort, light texture, good water absorption and air permeability, and excellent quick-drying effect. It solves the problem that the hygroscopicity of the pure cotton home textile fabric becomes worse after being treated with silicone softener, and can also fully transfer human sweat, reduce the growth of bacteria, and greatly make up for the deficiencies of cotton fibers. The home textile fabric of the present application still has quite good softness after being washed many times, the fabric has the property of being easy to decontaminate, and the comfort, hygroscopicity and moisture wicking of the home textile fabric have all been improved.

[0051] The technical solution of the present invention will be described in detail below through several specific embodiments. Unless otherwise specified, the raw materials and reagents used in the following embodiments are all commercially available products, or can be prepared by conventional methods in the art, and the instruments used in the embodiments can all be commercially purchased.

[0052] Example 1

[0053] In this embodiment, the grey fabric selected is the grey fabric after spinning and weaving Xinjiang long-staple cotton (the specification is 60s×60s, 200×98 roots per inch, and the s in the grey fabric specification refers to English count). After inspecting the fabric and sewing the seams, the processing technology of the home textile fabric in this embodiment includes the following steps:

[0054] S1. Pretreat the grey fabric. First, singe the grey fabric with one positive and one reverse singeing. When singeing, the flame temperature is 800°C and the vehicle speed is 150 m / min. Subsequently, perform enzyme desizing treatment on the grey fabric: first immerse the grey fabric in hot water at 75°C for 5 min, and then immerse and pad the grey fabric in the enzyme desizing treatment solution twice, with a padding rate of 90 wt%, stack and roll it at 45°C for 6 h, wash the grey fabric at 90°C for 10 min, wash it 3 times for inactivation treatment, and dry it after washing. Finally, perform boiling and bleaching treatment on the home textile fabric: immerse the desized grey fabric in the boiling and scouring working solution at 90°C for 60 min, immerse the grey fabric after boiling and scouring treatment in the oxygen bleaching solution, and heat it up to 110°C at a rate of 3°C / min and hold it for 30 min. After adjusting the pH value of the oxygen bleaching solution to neutral, take it out and wash it clean. Among them, the enzyme desizing treatment solution is α-amylase, and the pH value of the enzyme desizing treatment solution is 7.0. The boiling and scouring treatment solution includes: 50 g / L of NaOH, 2 g / L of complexing agent, and 3 g / L of scouring agent; the oxygen bleaching solution includes: 4 g / L of hydrogen peroxide, 1 g / L of penetrant JFC, 12 g / L of hydrogen peroxide stabilizer, and 0.2 g / L of NaOH.

[0055] S2. Caustic mercerization treatment. First, dip the grey cloth in caustic solution, and then perform stretching, width expanding, rinsing, flat washing, and water squeezing and drying on the grey cloth. Among them, the concentration of the caustic solution is 170 g / L, the rinsing temperature is 90 °C, the flat washing includes 4-stage water washing tanks, the temperature of the first-stage water washing tank is 85 °C, the water temperature of the subsequent water washing tanks decreases step by step, and the temperature of the latter water washing tank is 5 °C lower than that of the previous one.

[0056] S3. Tentering and pre-setting;

[0057] S4. Printing and dyeing.

[0058] S5. Spraying cellulase treatment solution onto the grey cloth. Place the grey cloth after caustic mercerization treatment in a water washing machine, and spray air currents above and below the wet grey cloth after impregnating it with the cellulase treatment solution to make the grey cloth impact the grille, and at the same time spray the cellulase treatment solution onto the grey cloth through nozzles on both the upper and lower sides of the grey cloth. In this embodiment, the liquid level of the cloth storage tank is 900 L, the liquid inlet volume of the water washing machine is 45 L / m. The speed of the water washing machine is 12 m / min, the flow rate of the air current impacting the grille is 100 m / min, the angle between the nozzle and the grey cloth is 90°, the concentration of the cellulase treatment solution is 20 g / L, the pH value of the cellulase treatment solution is 5, the treatment time is 20 min, the temperature of the cellulase treatment solution is 52 °C, and the cellulase treatment solution selects CAN enzyme of Genencor.

[0059] After spraying the cellulase treatment solution onto the grey cloth, place the grey cloth in an alkaline solution for impregnation to inactivate the cellulase. The alkaline solution selects sodium carbonate solution, the pH value of the alkaline solution is 9, the temperature of the alkaline solution is 80 °C, and the inactivation time of the cellulase is 15 min. After inactivating the cellulase, perform water washing treatment on the grey cloth, and the temperature of the water washing treatment is 50 °C.

[0060] S6. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey cloth. The speed of the first calendering treatment is 70 m / min, the temperature of the first calendering treatment is 100 °C, and the linear pressure is 180 N / mm; send the grey cloth after the first calendering treatment into a pre-shrinking machine, the pressure of the pressure-bearing roller of the pre-shrinking machine is 12 kg, the temperature is set at 120 °C, and the speed of the pre-shrinking machine is 25 m / min; the speed of the second calendering treatment is 60 m / min, the temperature of the second calendering treatment is 90 °C, and the linear pressure is 200 N / mm.

[0061] Perform moisture absorption and air permeability performance detection on the pure cotton home textile fabric prepared in this embodiment, and the detection results are as follows: the silicon content is 15.1 mg / kg, the water drop diffusion time before washing is 6 s, the drying rate is 0.31 g / h, and the water absorption rate is 162%; after washing 5 times in the 4N mode and drying naturally, the water drop diffusion time is 1.8 s, the drying rate is 0.3 g / h, and the water absorption rate is 194%.

[0062] The toughness, smoothness, and softness of the home textile fabric processed in this embodiment were tested, and the test results are shown in Table 1:

[0063] Table 1: Toughness, Smoothness, and Softness of the Home Textile Fabric Prepared in Example 1

[0064] Toughness (R) Slipperiness (S) Softness (F) Before washing 14.93 36.15 91 Washed 1 time 16.90 40.15 90.83 Washed 2 times 16.98 63.35 89.35 Washed 3 times 17.92 63.53 89.05 Washed 5 times 20.96 40.03 89.87 Washed 10 times 19.65 50.32 87.12 Washed 20 times 14.57 38.97 87.34

[0065] Comparative Example 1

[0066] In this comparative example, the grey fabric selected was the grey fabric after spinning and weaving Xinjiang long-staple cotton (specification: 60s×60s, 200×90 per inch). After fabric inspection and seam joining, the processing technology of the home textile fabric in this comparative example included the following steps:

[0067] S1. Pretreat the grey fabric;

[0068] S2. Alkali mercerization treatment;

[0069] S3. Tentering pre-setting;

[0070] S4. Bio-enzyme polishing of the grey fabric using a jig dyeing machine;

[0071] S5. Printing and dyeing;

[0072] S6. Sizing, drawing, and soft setting;

[0073] S7. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric.

[0074] For the processing technology of the home textile fabric in this comparative example, steps S1 - S3 were the same as steps S1 - S3 of the processing technology in Example 1, the printing and dyeing in step S5 were the same as the printing and dyeing in step S4 of Example 1, and the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric in step S7 were the same as the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric in step S6 of Example 1.

[0075] When performing bio-enzyme polishing on the grey fabric using a jig dyeing machine in step S4 of this comparative example, the polishing solution included Genencor CAN enzyme and acetic acid. Calculated by the weight percentage of the grey fabric, the content of Genencor CAN enzyme was 0.5% (owf), the content of acetic acid was 0.5% (owf), the temperature of the polishing solution was 55°C, and the polishing time was 6 h. After the polishing was completed, the grey fabric was placed in a sodium carbonate solution at 70°C for 15 min to inactivate the bio-enzyme, and the pH value of the sodium carbonate solution was 9.

[0076] In step S6 of the comparative example, during the slurry pulling and softening, the slurry pulling liquid contains 10 g / L of quaternary ammonium softener, 10 g / L of silicone softener and 2 g / L of buffer. The temperature of the slurry pulling liquid is 120°C, the vehicle speed is 40 m / min, and after the slurry pulling is completed, it is dried at 120°C for 2 minutes to set the shape.

[0077] The moisture absorption and air permeability of the pure cotton home textile fabric prepared in this comparative example were tested, and the test results were as follows: the silicon content was 193 mg / kg, the drip diffusion time before washing was 35.8 s, the drying rate was 0.19 g / h, and the water absorption rate was 135%; after washing 5 times in 4N mode and naturally drying, the silicon content was 180 mg / kg, the drip diffusion time was 8.6 s, the drying rate was 0.18 g / h, and the water absorption rate was 171%.

[0078] The toughness, smoothness and softness of the home textile fabric processed in this embodiment were tested, and the test results are shown in Table 2:

[0079] Table 2: Toughness, smoothness and softness of home textile fabrics prepared in Comparative Example 1

[0080] Toughness (R) Slipperiness (S) Softness (F) Before washing 8.80 39.42 87.35 Washed 1 time 15.21 63.12 81.13 Washed 2 times 15.81 63.64 81.71 Washed 3 times 14.89 63.38 81.44 Washed 5 times 18.39 50.63 80.98 Washed 10 times 20.24 44.32 80.25 Washed 20 times 24.87 64.15 78.31

[0081] Example 2

[0082] In this embodiment, the grey fabric is selected from Xinjiang long-staple cotton spinning and weaving grey fabric (specifications are 60s×60s, 200×90 strands / inch) and is inspected and sewn. The processing technology of the home textile fabric in this embodiment includes the following steps:

[0083] S1. Pre-treat the grey cloth. First, singe the grey cloth in a positive and negative direction. The flame temperature during singeing is 880℃ and the vehicle speed is 120m / min. Then, the grey cloth is subjected to enzyme desizing treatment: first, the grey cloth is arranged to be soaked in 95℃ hot water for 3min, and then the grey cloth is arranged to be immersed and rolled twice in the enzyme desizing treatment solution, with a rolling liquid rate of 120wt%, and the grey cloth is kept warm and rolled for 4h at 55℃. The grey cloth is washed at 100℃ for 6min, washed twice for enzyme inactivation, and dried after washing. Finally, the home textile fabric is boiled and bleached: the desized grey cloth is arranged in the scouring working solution at 110℃ for 50min, the scouring treated grey cloth is arranged in the oxygen bleaching solution, and the temperature is raised to 90℃ at a rate of 1℃ / min and kept warm for 60min, and the pH value of the oxygen bleaching solution is adjusted to neutral and then taken out and washed. Among them, the enzyme desizing treatment solution is saccharifying enzyme, and the pH value of the enzyme desizing treatment solution is 5.5. The scouring treatment liquid includes: NaOH 30g / L, complexing agent 5g / L, refining agent 10g / L; the oxygen bleaching liquid includes: hydrogen peroxide 8g / L, penetrant JFC3g / L, hydrogen peroxide stabilizer 2g / L, NaOH 3g / L.

[0084] S2. Mercerization with alkali. First, dip the grey fabric in the alkali solution, and then carry out stretching, width expanding, rinsing, flat washing, and water squeezing and drying on the grey fabric. Among them, the concentration of the alkali solution is 230 g / L, the rinsing temperature is 95 °C, the flat washing includes two-stage water washing tanks, the temperature of the first-stage water washing tank is 80 °C, and the temperature of the second-stage water washing tank is 70 °C.

[0085] S3. Tentering and pre-setting;

[0086] S4. Printing and dyeing.

[0087] S5. Spraying cellulase treatment solution onto the grey fabric. Place the grey fabric after mercerization with alkali in the washing machine, and spray air currents above and below the wet grey fabric after impregnating with the cellulase treatment solution to make the grey fabric impact the grating, and at the same time spray the cellulase treatment solution onto the grey fabric through nozzles on both the upper and lower sides of the grey fabric. In this embodiment, the liquid level of the fabric storage tank is 1200 L, the liquid inlet volume of the washing machine is 68 L / m, the speed of the washing machine is 30 m / min, the flow rate of the air current is 500 m / min, the angle between the nozzle and the grey fabric is 160°, the concentration of the cellulase is 50 g / L, the pH value of the cellulase treatment solution is 5, the treatment time is 40 min, the temperature of the cellulase treatment is 50 °C, and the cellulase selected is CAN enzyme of Genencor.

[0088] After spraying the cellulase treatment solution onto the grey fabric, immerse the grey fabric in an alkaline solution to inactivate the cellulase. The alkaline solution selected is sodium carbonate solution, the pH value of the alkaline solution is 10, the temperature of the alkaline solution is 85 °C, and the inactivation time of the cellulase is 10 min. After inactivating the cellulase, carry out water washing treatment on the home textile fabric, and the temperature of the water washing treatment is 60 °C.

[0089] S6. Carry out the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric. The speed during the first calendering treatment is 90 m / min, the temperature of the first calendering treatment is 115 °C, and the linear pressure is 150 N / mm; send the grey fabric after the first calendering treatment into the pre-shrinking machine, the pressure of the pressure-bearing roller of the pre-shrinking machine is 15 kg, the temperature is set at 100 °C, and the speed of the pre-shrinking machine is 60 m / min; the speed of the second calendering treatment is 70 m / min, the temperature of the second calendering treatment is 100 °C, and the linear pressure is 180 N / mm.

[0090] Detect the moisture absorption and air permeability performance of the pure cotton home textile fabric prepared in this embodiment, and the detection results are as follows: the silicon content is 20.5 mg / kg, the water drop diffusion time before washing is 5.9 s, the drying rate is 0.23 g / h, and the water absorption rate is 180%; after washing 5 times in the 4N mode and air drying naturally, the water drop diffusion time is 1.8 s, the drying rate is 0.26 g / h, and the water absorption rate is 218%;

[0091] The toughness, smoothness, and softness of the home textile fabric processed in this embodiment were detected, and the detection results are shown in Table 3:

[0092] Table 3: Toughness, Smoothness, and Softness of the Home Textile Fabric Prepared in Example 2

[0093] Toughness (R) Slipperiness (S) Softness (F) Before washing 18.58 40.84 88.01 Washed 1 time 20.04 42.64 87.86 Washed 2 times 19.93 41.36 87.98 Washed 3 times 18.98 40.58 87.55 Washed 5 times 19.65 50.32 87.12 Washed 10 times 20.55 50.5 85.13 Washed 20 times 15.48 40.83 84.4

[0094] Comparative Example 2

[0095] In this comparative example, the grey fabric selected was the grey fabric after spinning and weaving Xinjiang long-staple cotton (specification: 60s×60s, 200×90 threads per inch), which was subjected to fabric inspection and seam joining. The processing process of the home textile fabric in this comparative example included the following steps:

[0096] S1. Pretreat the grey fabric;

[0097] S2. Alkali mercerization treatment;

[0098] S3. Tentering pre-setting;

[0099] S4. Bio-enzyme polishing of the grey fabric using a jig dyeing machine;

[0100] S5. Printing and dyeing;

[0101] S6. Sizing and soft setting;

[0102] S7. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric.

[0103] For the processing process of the home textile fabric in this comparative example, steps S1 to S3 are the same as steps S1 to S3 of the processing process in Example 2, the printing and dyeing in step S5 are the same as the printing and dyeing in step S4 in Example 2, and the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric in step S7 are the same as the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric in step S6 in Example 2.

[0104] When performing bio-enzyme polishing on the grey fabric using a jig dyeing machine in step S4 of this comparative example, the polishing solution included Genencor CAN enzyme and acetic acid. Calculated by the weight percentage of the grey fabric, the content of Genencor CAN enzyme was 0.5% (owf), the content of acetic acid was 0.5% (owf), the temperature of the polishing solution was 55°C, and the polishing time was 6 h. After the polishing was completed, the grey fabric was placed in a sodium carbonate solution at 70°C for 15 min to inactivate the bio-enzyme, and the pH value of the sodium carbonate solution was 9.

[0105] In step S6 of the comparative example, during the slurry pulling and softening, the slurry pulling liquid contains 10 g / L of quaternary ammonium softener, 10 g / L of silicone softener and 2 g / L of buffer. The temperature of the slurry pulling liquid is 120°C, the vehicle speed is 40 m / min, and after the slurry pulling is completed, it is dried at 120°C for 2 minutes to set the shape.

[0106] The moisture absorption and air permeability of the pure cotton home textile fabric prepared in this comparative example were tested, and the test results were as follows: the silicon content was 666.5 mg / kg, the drip diffusion time before washing was >60 s, the drying rate was N / A (beyond the measurement range of the instrument), and the water absorption rate was 152%; after washing 5 times in 4N mode and naturally drying, the drip diffusion time was 10.3 s, the drying rate was 0.18 g / h, and the water absorption rate was 200%.

[0107] The toughness, smoothness and softness of the home textile fabric processed in this embodiment were tested, and the test results are shown in Table 4:

[0108] Table 4: Toughness, smoothness and softness of home textile fabrics prepared in Comparative Example 2

[0109]

[0110]

[0111] Example 3

[0112] In this embodiment, the grey fabric is selected from Xinjiang long-staple cotton spinning and weaving grey fabric (specifications are 100s×80s, 280×132 strands / inch) and is inspected and sewn. The processing technology of the home textile fabric in this embodiment includes the following steps:

[0113] S1. Pre-treat the grey cloth. First, singe the grey cloth in a positive and negative direction. The flame temperature during singeing is 850℃ and the vehicle speed is 130m / min. Then, the grey cloth is subjected to enzyme desizing treatment: first, the grey cloth is arranged to be soaked in 90℃ hot water for 4min, and then the grey cloth is arranged to be immersed and rolled in the enzyme desizing treatment solution twice, the rolling liquid rate is 110wt%, and the grey cloth is kept warm and rolled for 5h at 50℃. The grey cloth is washed at 95℃ for 8min, washed 3 times for enzyme inactivation, and dried after washing. Finally, the home textile fabric is subjected to boiling and bleaching treatment: the desized grey cloth is arranged in the boiling working solution at 100℃ for 55min, the scouring treated grey cloth is arranged in the oxygen bleaching solution, and the temperature is raised to 100℃ at a rate of 2℃ / min and kept warm for 50min, and the pH value of the oxygen bleaching solution is adjusted to neutral and then taken out and washed. Among them, the enzyme desizing treatment solution is a debranching enzyme, and the pH value of the enzyme desizing treatment solution is 6. The scouring treatment liquid includes: NaOH 40g / L, complexing agent 4g / L, refining agent 5g / L; the oxygen bleaching liquid includes: hydrogen peroxide 5g / L, penetrant JFC 2g / L, hydrogen peroxide stabilizer 8g / L, NaOH 1.5g / L.

[0114] S2. Mercerization with alkali. First, the grey cloth is padded with alkali solution, and then the grey cloth is stretched, width-expanded, rinsed, flat-washed, and squeezed and dried. Among them, the concentration of the alkali solution is 200 g / L, the rinsing temperature is 93 °C, the flat-washing includes 3-stage water washing tanks. The temperature of the first-stage water washing tank is 84 °C, the water temperature of the subsequent water washing tanks decreases step by step, and the temperature of the latter-stage water washing tank is 6 °C lower than that of the previous stage.

[0115] S3. Tentering and pre-setting;

[0116] S4. Printing and dyeing.

[0117] S5. Spraying cellulase treatment solution onto the grey cloth. The grey cloth after mercerization with alkali is placed in a water washing machine, and airflows are sprayed above and below the wet grey cloth after impregnating with the cellulase treatment solution to make the grey cloth impact the grid, and at the same time, the cellulase treatment solution is sprayed onto the grey cloth through nozzles on both the upper and lower sides of the grey cloth. In this embodiment, the liquid level of the cloth storage tank is 1000 L, the liquid inlet volume of the water washing machine is 60 L / m, the vehicle speed of the water washing machine is 16 m / min, the flow rate of the airflow is 200 m / min, the angle between the nozzle and the grey cloth is 100°, the concentration of the cellulase treatment solution is 30 g / L, the pH value of the cellulase treatment solution is 6, the treatment time is 35 min, the temperature of the cellulase treatment solution is 55 °C, and the cellulase selected is CAN enzyme of Genencor.

[0118] After spraying the cellulase treatment solution onto the grey cloth, the grey cloth is soaked in an alkaline solution to inactivate the cellulase. The alkaline solution selected is sodium carbonate solution, the pH value of the alkaline solution is 9.5, the temperature of the alkaline solution is 82 °C, and the inactivation time of the cellulase is 12 min. After inactivating the cellulase, the grey cloth is subjected to water washing treatment, and the temperature of the water washing treatment is 55 °C.

[0119] S6. Conduct the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey cloth. The vehicle speed of the first calendering treatment is 80 m / min, the temperature of the first calendering treatment is 110 °C, and the linear pressure is 170 N / mm; the grey cloth after the first calendering treatment is sent into a pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 14 kg, the temperature is set at 110 °C, and the vehicle speed of the pre-shrinking machine is 45 m / min; the vehicle speed of the second calendering treatment is 65 m / min, the temperature of the second calendering treatment is 95 °C, and the linear pressure is 190 N / mm.

[0120] The moisture absorption and air permeability performance of the pure cotton home textile fabric prepared in this embodiment is detected, and the detection results are as follows: the silicon content is 49 mg / kg, the water drop diffusion time before washing is 3.8 s, the drying rate is 0.3 g / h, and the water absorption rate is 189%; after washing 5 times in the 4N mode and air-drying naturally, the water drop diffusion time is 1.3 s, the drying rate is 0.23 g / h, and the water absorption rate is 200%.

[0121] The toughness, smoothness, and softness of the home textile fabric processed in this example were tested, and the test results are shown in Table 5 as follows:

[0122] Table 5: Toughness, smoothness, and softness of the home textile fabric prepared in Example 3

[0123]

[0124]

[0125] Comparative Example 3

[0126] In this comparative example, the grey fabric selected was the grey fabric after spinning and weaving Xinjiang long-staple cotton (specification: 100s×80s 280×132 per inch), which was inspected and seamed. The processing technology of the home textile fabric in this comparative example included the following steps:

[0127] S1. Pretreat the grey fabric;

[0128] S2. Alkali mercerization treatment;

[0129] S3. Tentering and pre-setting;

[0130] S4. Bio-enzyme polishing of the grey fabric using a jig dyeing machine;

[0131] S5. Printing and dyeing;

[0132] S6. Sizing, drawing, and soft setting;

[0133] S7. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric.

[0134] For the processing technology of the home textile fabric in this comparative example, steps S1 to S3 are the same as steps S1 to S3 of the processing technology in Example 3, the printing and dyeing in step S5 are the same as the printing and dyeing in step S4 in Example 3, and the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric in step S7 are the same as the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey fabric in step S6 in Example 3.

[0135] When performing bio-enzyme polishing on the grey fabric using a jig dyeing machine in step S4 of this comparative example, the polishing solution included Genencor CAN enzyme and acetic acid. Calculated by the weight percentage of the grey fabric, the content of Genencor CAN enzyme was 0.5% (owf), the content of acetic acid was 0.5% (owf), the temperature of the polishing solution was 55°C, and the polishing time was 6 h. After the polishing was completed, the grey fabric was placed in a sodium carbonate solution at 70°C for 15 min to inactivate the bio-enzyme, and the pH value of the sodium carbonate solution was 9.

[0136] In this comparative example, when softening and shaping the sizing in step S6, the sizing solution selected contains 10 g / L of quaternary ammonium salt softener; 10 g / L of silicone softener, 2 g / L of buffer. The temperature of the sizing solution is 120 °C, the vehicle speed is 40 m / min, and after sizing, it is dried at 120 °C for 2 min for shaping.

[0137] The moisture absorption and air permeability of the pure cotton home textile fabric prepared in this example were detected, and the detection results are as follows:

[0138] The silicon content is 1230 mg / kg, the water drop diffusion time before washing is 36.6 s, the drying rate is 0.24 g / h, and the water absorption rate is 141%; after washing 5 times in the 4N mode and air drying naturally, the water drop diffusion time is 15.6 s, the drying rate is 0.17 g / h, and the water absorption rate is 169%.

[0139] The toughness, smoothness and softness of the home textile fabric processed in this example were detected, and the detection results are shown in Table 6:

[0140] Table 6: Toughness, smoothness and softness of the home textile fabric prepared in Comparative Example 3

[0141] Toughness (R) Slipperiness (S) Softness (F) Before washing 18.98 41.39 90.75 Washed 1 time 19.63 32.57 88.78 Washed 2 times 16.97 41.69 89.56 Washed 3 times 13.14 42.05 88.78 Washed 5 times 9.31 43.55 86.91 Washed 10 times 15.62 41.73 82.94 Washed 20 times 16.54 40.17 81.48

[0142] Example 4

[0143] In this example, the greige cloth selected is the greige cloth after spinning and weaving Xinjiang long-staple cotton (specification: 100s / 2×50s,

[0144] 200×100 roots / inch), and it undergoes cloth inspection and seam joining. The processing technology of the home textile fabric in this example includes the following steps:

[0145] S1. Pretreat the greige cloth. First, singe the greige cloth with one positive and one reverse singeing. When singeing, the flame temperature is 820 °C and the vehicle speed is 140 m / min. Subsequently, perform enzyme desizing on the greige cloth: first soak the greige cloth in hot water at 80 °C for 4 min, then place the greige cloth in the enzyme desizing solution for two dips and two rolls, the liquor pickup rate is 100 wt%, keep it in a roll at 50 °C for 6 h, wash the greige cloth at 90 °C for 8 min, wash 3 times for enzyme inactivation treatment, and dry it after washing. Finally, perform scouring and bleaching on the home textile fabric:

[0146] The desized grey fabric is placed in the scouring working solution and treated at 100 °C for 55 min. The scoured grey fabric is placed in the oxygen bleaching solution, heated to 110 °C at a rate of 3 °C / min and held for 40 min, and then taken out and washed after adjusting the pH value of the oxygen bleaching solution to neutral. Among them, the enzyme desizing treatment solution is cellulase, and the pH value of the enzyme desizing treatment solution is 6. The scouring treatment solution includes: 40 g / L of NaOH, 3 g / L of complexing agent, and 7 g / L of scouring agent; the oxygen bleaching solution includes: 5 g / L of hydrogen peroxide, 2 g / L of penetrant JFC, 10 g / L of hydrogen peroxide stabilizer, and 1 g / L of NaOH.

[0147] S2. Alkaline mercerization treatment. First, the grey fabric is padded with the alkaline solution, and then the grey fabric is stretched, widened, rinsed, flat-washed, and squeezed and dried. Among them, the concentration of the alkaline solution is 180 g / L, the rinsing temperature is 95 °C, the flat washing includes 3-stage water washing boxes, the temperature of the first-stage water washing box is 85 °C, the water temperature of the subsequent water washing boxes decreases step by step, and the temperature of the latter water washing box is 4 °C lower than that of the previous one.

[0148] S3. Tentering and pre-setting;

[0149] S4. Printing and dyeing.

[0150] S5. Spraying the cellulase treatment solution onto the grey fabric. The grey fabric after alkaline mercerization treatment is placed in a washing machine, and airflows are sprayed above and below the wet grey fabric impregnated with the cellulase treatment solution to make the grey fabric impact the grille, and at the same time, the cellulase treatment solution is sprayed onto the grey fabric through nozzles on both the upper and lower sides of the grey fabric. In this embodiment, the liquid level of the cloth storage tank is 1000 L, the liquid inlet volume of the washing machine is 45 L / m, the running speed of the washing machine is 16 m / min, the flow rate of the airflows is 300 m / min, the angle between the nozzle and the grey fabric is 90°, the concentration of cellulase is 30 g / L, the pH value of the cellulase treatment solution is 7, the treatment time is 30 min, the temperature of cellulase treatment is 53 °C, and the cellulase selected is CAN enzyme of Genencor.

[0151] After spraying the cellulase treatment solution onto the grey fabric, the grey fabric is immersed in an alkaline solution to inactivate the cellulase. The alkaline solution is a sodium carbonate solution, the pH value of the alkaline solution is 9, the temperature of the alkaline solution is 85 °C, and the inactivation time of the cellulase is 15 min. After inactivating the cellulase, the grey fabric is washed, and the temperature of the washing treatment is 55 °C.

[0152] S6. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey cloth. The vehicle speed during the first calendering treatment is 80 m / min, the temperature of the first calendering treatment is 110 °C, and the linear pressure is 160 N / mm; Feed the grey cloth after the first calendering treatment into a pre-shrinking machine. The pressure of the pressure-bearing roller of the pre-shrinking machine is 13 kg, the temperature is set at 110 °C, and the vehicle speed of the pre-shrinking machine is 35 m / min; The vehicle speed of the second calendering treatment is 65 m / min, the temperature of the second calendering treatment is 95 °C, and the linear pressure is 200 N / mm.

[0153] Conduct moisture absorption and air permeability performance tests on the pure cotton home textile fabric prepared in this example. The test results are as follows: The silicon content is 8.9 mg / kg, the water droplet diffusion time before washing is 2.2 s, the drying rate is 0.28 g / h, and the water absorption rate is 115%; After washing 5 times in the 4N mode and air-drying naturally, the water droplet diffusion time is 1.9 s, the drying rate is 0.25 g / h, and the water absorption rate is 113%.

[0154] Conduct tests on the toughness, smoothness, and softness of the home textile fabric after processing in this example. The test results are shown in Table 7:

[0155] Table 7: Toughness, smoothness, and softness of the home textile fabric prepared in Example 4

[0156] Toughness (R) Slipperiness (S) Softness (F) Before washing 17.51 51.63 83.17 Washed 1 time 10.26 60.77 82.39 Washed 2 times 11.23 41.18 82.39 Washed 3 times 18.4 53.69 82.08 Washed 5 times 18.21 53.44 82.5 Washed 10 times 14.12 42.6 80.53 Washed 20 times 16.54 50.26 80.47

[0157] Comparative Example 4

[0158] In this comparative example, the grey cloth selected is the grey cloth after spinning and weaving Xinjiang long-staple cotton (specification: 100s / 2×50s, 200×100 per inch), which has been inspected for fabric and sewn at the seams. The processing technology of the home textile fabric in this comparative example includes the following steps:

[0159] S1. Perform pre-treatment on the grey cloth;

[0160] S2. Alkaline mercerization treatment;

[0161] S3. Tentering and pre-setting;

[0162] S4. Use a jig dyeing machine to conduct bio-enzyme polishing on the grey cloth;

[0163] S5. Printing and dyeing;

[0164] S6. Sizing, drawing, and soft setting;

[0165] S7. Perform the first calendering treatment, pre-shrinking treatment, and the second calendering treatment on the grey cloth.

[0166] For the processing technology of the home textile fabric of this comparative example, steps S1 to S3 are the same as steps S1 to S3 of the processing technology in Example 4. The printing and dyeing in step S5 are the same as the printing and dyeing in step S4 in Example 4. The first calendering treatment, pre-shrinking treatment, and second calendering treatment of the grey cloth in step S7 are the same as the first calendering treatment, pre-shrinking treatment, and second calendering treatment of the grey cloth in step S6 in Example 4.

[0167] In step S4 of this comparative example, when using a winch dyeing machine to conduct bio-enzyme polishing on the grey cloth, the polishing liquid includes Genencor CAN enzyme and acetic acid. Calculated by the weight percentage of the grey cloth, the content of Genencor CAN enzyme is 0.5% (owf), and the content of acetic acid is 0.5% (owf). The temperature of the polishing liquid is 55°C, and the polishing time is 6 h. After the polishing is completed, the grey cloth is placed in a sodium carbonate solution at 80°C for 15 min to inactivate the bio-enzyme. The pH value of the sodium carbonate solution is 9.

[0168] In step S6 of this comparative example, when conducting sizing, stretching, softening, and shaping, the sizing, stretching, and softening liquid selected contains 10 g / L of quaternary ammonium salt softener; 10 g / L of silicone softener, and 2 g / L of buffer. The temperature of the sizing, stretching, and softening liquid is 120°C, the vehicle speed is 40 m / min, and after the sizing, stretching, and softening are completed, it is dried at 130°C for 3 min for shaping.

[0169] The moisture absorption and air permeability performance of the pure cotton home textile fabric prepared in this example was detected, and the detection results are as follows: the silicon content is 926.5 mg / kg, the water droplet diffusion time before washing is greater than 60 s, the drying rate is 0.17 g / h, and the water absorption rate is 102%; after washing 5 times in the 4N mode and air drying naturally, the water droplet diffusion time is 21.9 s, the drying rate is 0.18 g / h, and the water absorption rate is 139%.

[0170] The toughness, smoothness, and softness of the textile fabric processed in this comparative example were detected, and the detection results are shown in Table 8:

[0171] Table 8: Toughness, smoothness, and softness of the home textile fabric obtained in Comparative Example 4

[0172] Toughness (R) Slipperiness (S) Softness (F) Before washing 12.1 42.8 82.11 Washed 1 time 19.61 44.65 79.47 Washed 2 times 24.88 43.32 78.86 Washed 3 times 26.41 64.52 77.7 Washed 5 times 21.39 65.75 76.98 Washed 10 times 17.75 64.68 75.5 Washed 20 times 20.18 66.18 74.33

[0173] In this application, the test standard for softness refers to the group standard: T / ZFB 0003-2019 "Test Instrument Method for Relative Handfeel Value of Textiles", the evaluation standard for moisture absorption performance refers to GB / T 21655.1-2023 "Evaluation of Moisture Absorption and Quick Drying Performance of Textiles - Part 1 Single Item Combined Test Method", and the determination of silicon content refers to ASTM D4004-6 2017 Alkaline Dissolution Method. The test for soil release performance uses the industry standard FZ / T 01118-2012 "Testing and Evaluation of Soil Release Performance of Textiles - Soil Release". During the preparation process of pure cotton home textile fabrics, since groundwater, drinking water, mineral water, etc. all contain silicon, there will be a small amount of residual silicon elements in the pure cotton home textile fabrics. When the silicon content in the fabric is less than 50 mg / kg, it is the residual silicon element in water, which belongs to the normal content.

[0174] It can be seen from Examples 1 to 4 that the obtained pure cotton home textile fabrics have a short drip diffusion time, a high drying rate, and a high water absorption rate, indicating good moisture absorption and sweat release properties, and the moisture absorption and sweat release properties remain good after multiple washes. It can be seen from Tables 1, 3, 5, and 7 that the softness of the pure cotton home textile fabrics prepared in Examples 1 to 4 remains good after multiple washes. The drip diffusion time of the home textile fabrics prepared in Comparative Examples 1 to 4 after sizing, stretching, and softening setting treatment is long, the drying rate is low, and the water absorption rate is low. It can be seen from Tables 2, 4, 6, and 8 that the softening effect of the home textile fabrics prepared in Comparative Examples 1 to 4 attenuates significantly after 3 standard washes, and the durability is poor. Therefore, the moisture absorption and sweat release performance of the pure cotton home textile fabrics of this application has been greatly improved, and the moisture absorption and sweat release properties and softness still remain good after multiple washes.

[0175] The processing technology of the pure cotton home textile fabric provided by the present invention first performs pretreatment on the grey cloth, including singeing treatment, enzymatic desizing treatment, and scouring and bleaching treatment, then performs caustic mercerization treatment on the grey cloth. Subsequently, the grey cloth after caustic mercerization treatment is placed in a water washing machine, the wet grey cloth is slapped against the grille, and a cellulase treatment solution is sprayed onto the grey cloth. The grey cloth is subjected to the first calendering treatment, pre-shrinking treatment, and the second calendering treatment. Through a bio-physical synergistic action system, cellulase is used for polishing to remove the hairiness on the surface of the yarn and inside the fabric, the jet water flow and the fibers are fully softened, enzymatic hydrolysis generates nano-scale fiber fibrillation, the water flow shear force opens the hydrogen bonds between the fibers, forming a three-dimensional curly network structure. The processing of the grey cloth with a loose small-tension process and more rubbing and collision effects during the processing process can greatly improve the softness of the fabric. The pure cotton home textile fabric prepared in this application has a soft handfeel, good water absorption and air permeability, and an excellent quick-drying effect. It still has quite good softness after multiple washes, and the comfort, moisture absorption, and moisture discharge properties of the home textile fabric are well maintained.

[0176] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A processing technology for pure cotton home textile fabric, characterized in that, The steps include: Provide grey fabrics; The grey cloth is subjected to singeing treatment, enzyme desizing treatment and scouring and bleaching treatment; Performing alkali mercerization on the grey cloth; Placing the grey cloth in a washing machine, making the wet grey cloth hit against a grid, and spraying a cellulase treatment solution onto the grey cloth at the same time; The grey cloth is subjected to a first calendering treatment, a pre-shrinking treatment and a second calendering treatment.

2. The processing technology according to claim 1, characterized in that, Placing the grey cloth in a washing machine, making the wet grey cloth hit against a grid, and spraying a cellulase treatment solution onto the grey cloth at the same time comprises the following steps: Air flow is sprayed on the wet grey cloth above and below the grey cloth immersed in the cellulase treatment liquid so that the grey cloth hits the grid, and the cellulase treatment liquid is sprayed on the grey cloth through nozzles on the upper and lower sides of the grey cloth; wherein the speed of the washing machine is 12-30 m / min, the flow rate of the air flow is 100-500 m / min, the angle between the nozzle and the grey cloth is 90-160°, the concentration of the cellulase is 20-50 g / L, the pH value of the cellulase treatment is 5-7, and the treatment time is 20-40 min.

3. The processing technology according to claim 1, wherein After spraying the cellulase treatment solution onto the grey cloth, the processing technology further comprises immersing the grey cloth in an alkaline solution, wherein the pH value of the alkaline solution is 9-10, the temperature of the alkaline solution is 80-85° C., and the treatment time is 10-15 minutes.

4. The processing technology according to claim 1, characterized in that, The singeing treatment is a forward and reverse singeing treatment, the flame temperature of the singeing treatment is 800-880° C., and the vehicle speed of the singeing treatment is 120-150 m / min.

5. The processing technology according to claim 1, characterized in that, The enzyme desizing treatment comprises the following steps: immersing the blank in deionized water at 75-95°C for 3-5 minutes, then immersing and rolling the blank in the enzyme desizing treatment solution twice, with a rolling rate of 90-120wt%, heat-insulating and rolling the blank at 45-55°C for 4-6 hours, washing the blank at 90-100°C for 6-10 minutes, washing 2-3 times, and drying after washing.

6. The processing technology according to claim 5, characterized in that, The enzyme desizing treatment liquid comprises any one or more of α-amylase, saccharifying enzyme, debranching enzyme, polyvinyl alcohol degrading enzyme and cellulase, and the pH value of the enzyme desizing treatment liquid is 5.5-7.

0.

7. The processing technology according to claim 1, characterized in that, The scouring and bleaching treatment includes scouring treatment and oxygen bleaching treatment. The scouring treatment includes the following steps: placing the blank after the enzyme desizing treatment in a scouring treatment solution and treating it at a temperature of 90-110° C. for 50-60 minutes; the oxygen bleaching treatment includes the following steps: placing the blank after the scouring treatment in an oxygen bleaching solution, heating the oxygen bleaching solution to 90-110° C. at a rate of 1-3° C. / min and keeping it warm for 30-60 minutes, adjusting the pH value of the oxygen bleaching solution to neutral after the insulation is completed, and then taking it out and washing it; wherein the scouring treatment solution includes: NaOH 30-50g / L, complexing agent 2-5g / L, refining agent 3-10g / L; the oxygen bleaching solution includes hydrogen peroxide 4-8g / L, penetrant JFC 1-3g / L, hydrogen peroxide stabilizer 2-12g / L, NaOH 0.2-3g / L.

8. The processing technology according to claim 1, characterized in that, The alkali mercerization treatment includes the following steps: First, dip the grey cloth in the alkali solution, and then carry out cloth stretching, width expanding, rinsing, flat washing, and water squeezing and drying on the grey cloth; wherein, the concentration of the alkali solution is 170-230 g / L.

9. The processing technology according to claim 8, characterized in that The vehicle speed of the first calendering treatment is 70-90 m / min, the temperature of the first calendering treatment is 100-115 °C, and the linear pressure is 150-180 N / mm; the pre-shrinking treatment is to send the grey cloth after the first calendering treatment into a pre-shrinking machine, the pressure of the pressure-bearing roller of the pre-shrinking machine is 12-15 kg, the temperature of the pre-shrinking treatment is 100-120 °C, and the vehicle speed of the pre-shrinking machine is 25-60 m / min; the vehicle speed of the second calendering treatment is 60-70 m / min, the temperature of the second calendering treatment is 90-100 °C, and the linear pressure is 180-200 N / mm.

10. A pure cotton home textile fabric, characterized in that, Manufactured according to the processing technology described in any one of claims 1 to 9.

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