Preparation method of antibacterial and anti-wrinkle high-count blended shirt fabric

Abstract

The invention discloses a preparation method of an antibacterial and anti-wrinkle high-count blended shirt fabric, and relates to the technical field of textile fabric processing, and the preparation method comprises the steps of cellulase pretreatment, anti-wrinkle finishing, antibacterial treatment and after-finishing. According to cellulase pretreatment, the number of hydroxyl groups on the surface of the fiber is increased through reasonable parameter setting, and sufficient reaction sites are provided for follow-up treatment. The anti-wrinkle finishing provides three modes, including different carboxylic acid finishing liquid treatment and cationic modified polymaleic acid anti-wrinkle agent treatment for the dark-color fabric, and particularly, the anti-wrinkle performance and the color fastness of the dark-color fabric can be synergistically improved. The antibacterial agent is uniformly and firmly attached through antibacterial treatment, and the lasting antibacterial effect is guaranteed. After finishing, through softening treatment and shaping treatment, the hand feeling of the fabric is improved, and the size is stabilized. The problems that in the prior art, a high-count blended shirt fabric is insufficient in antibacterial property and wrinkle resistance, a dark-color fabric is low in color fastness and the like are solved, the comprehensive performance of the fabric is remarkably improved, and the fabric has a good application prospect.

Description

Technical Field

[0001] This invention relates to the field of textile fabric processing technology, specifically to a method for preparing an antibacterial and wrinkle-resistant high-count blended shirt fabric. Background Technology

[0002] High-count blended shirt fabrics hold an important position in the high-end apparel market due to their delicate texture, excellent breathability, and comfortable wearing experience. However, as consumers' demands for clothing functionality increase, traditional high-count blended fabrics have revealed many problems during use, such as being prone to developing odors due to bacterial growth, and experiencing a significant decrease in wrinkle resistance after multiple washes. In particular, dark-colored fabrics often show reduced colorfastness and fading after wrinkle-resistant finishing, seriously affecting product quality and lifespan.

[0003] In existing technologies, improvements to the antibacterial and wrinkle-resistant properties of fabrics often employ single treatment methods, such as adding antibacterial agents alone or performing chemical anti-wrinkle finishing. However, these methods often suffer from drawbacks such as limited functionality, short-lasting effects, or damage to the original properties of the fabric. For example, in some antibacterial treatment processes, the antibacterial agent does not bond firmly to the fabric, and the antibacterial effect significantly diminishes after repeated washing. Traditional anti-wrinkle finishing may lead to a stiffer fabric feel, reduced breathability, and difficulty in meeting the colorfastness requirements of dark-colored fabrics. Therefore, there is an urgent need for a preparation method that can synergistically improve the antibacterial, wrinkle-resistant, and colorfastness properties of high-count blended shirt fabrics.

[0004] In view of the above, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing an antibacterial and wrinkle-resistant high-count blended shirt fabric, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides a method for preparing antibacterial and wrinkle-resistant high-count blended shirt fabric, comprising the following steps: Step 1: Cellulase pretreatment: Immerse the woven fabric in a treatment solution containing cellulase, with a cellulase mass fraction of 1%-3%, controlled temperature of 40-60℃, pH value of 4.0-6.0, and treatment time of 15-25 minutes, followed by washing and drying. Step Two: Anti-wrinkle finishing, choose at least one of the following methods: Method 1: Immerse the fabric treated in step 1 into a finishing solution containing citric acid and sodium hypophosphite, with the citric acid mass fraction being 7%-9% and the sodium hypophosphite mass fraction being 3%-5%. Perform two dips and two nips, with a nip-out rate of 70%-80%. Then bake at 150-170℃ for 2-4 minutes. Method 2: Immerse the fabric treated in step 1 into a finishing solution containing 1,2,3,4-butanetetracarboxylic acid and sodium hypophosphite. The mass fraction of 1,2,3,4-butanetetracarboxylic acid is 9%-11%, and the mass fraction of sodium hypophosphite is 4%-6%. Perform two dips and two nips, with a nip rate of 75%-85%. Then bake at 160-180℃ for 2-3 minutes. Method 3: For dark-colored fabrics, after dyeing, the fabric treated in step one is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.6-1.0 meq / g, the pH value is controlled at 5.5-7.0, the temperature is 70-90℃, and the heat is maintained for 30-50 minutes. Step 3: Antibacterial treatment, using an antibacterial agent to treat the fabric treated in Step 2; Step 4: Finishing, including softening and setting treatments; through the synergistic effect of multiple steps, the pretreatment provides more reaction sites for subsequent anti-wrinkle finishing. Various anti-wrinkle finishing methods are adapted to different needs. In particular, Method 3 achieves synergistic improvement of anti-wrinkle and color fastness for dark fabrics, thereby improving the overall performance of the fabric.

[0007] Furthermore, in step one, the raw materials of the high-count blended shirt fabric include high-count cotton fiber, Modal fiber and PTT fiber, which are spun together in a mass ratio of 50:30:20. The high-count cotton fiber has a count of 120-150. This raw material ratio and count selection balance the comfort, soft drape and elastic recovery of the fabric, laying a good foundation for subsequent processing. Different fibers work together to enhance the overall performance of the fabric.

[0008] Furthermore, in step one, the mass fraction of cellulase is 2%, the temperature is 50℃, the pH value is 4.5-5.5, and the treatment time is 20 minutes. This parameter range optimizes the pretreatment effect, removes impurities while avoiding excessive fiber damage, provides an ideal fiber surface state for subsequent steps, and improves the overall process effect.

[0009] Furthermore, in step two, method one, the mass fraction of citric acid is 8%, the mass fraction of sodium hypophosphite is 4%, the roll residue is 75%, the baking temperature is 160℃, and the baking time is 3 minutes; fabrics treated within this range have good wrinkle resistance, the process is stable and easy to control, and it is suitable for mass production.

[0010] Furthermore, in step two, method two, the mass fraction of 1,2,3,4-butanetetracarboxylic acid is 10%, the mass fraction of sodium hypophosphite is 5%, the roll-off rate is 80%, the baking temperature is 170℃, and the baking time is 2.5 minutes; this can form a dense three-dimensional cross-linked structure, significantly improving the fabric's wrinkle resistance and meeting the demand for high wrinkle resistance.

[0011] Furthermore, in step two, method three, the charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the treatment temperature is 80℃, the treatment time is 40 minutes, and the pH value is controlled at 6.0-6.5; this achieves an optimal balance between the anti-wrinkle performance and color fastness of dark-colored fabrics, significantly improves the wrinkle recovery angle, and enhances wash fastness.

[0012] Furthermore, in step three, the antibacterial treatment involves mixing the antibacterial agent and the dispersant to form an antibacterial dispersion, immersing the fabric in the antibacterial dispersion for 20-30 minutes at a temperature controlled at 40-50°C, and then drying it at 80-90°C. This antibacterial treatment method ensures that the antibacterial agent is evenly adhered to the fabric, and the reasonable control of temperature and time ensures that the antibacterial agent is firmly bonded to the fabric, thereby improving the durability of the antibacterial effect.

[0013] Furthermore, in step four, the softening treatment uses an organosilicon softener with a mass fraction of 2%-4%, and the setting treatment is carried out at 120-140℃ for 1-3 minutes. The softening treatment improves the feel of the fabric, and the setting treatment stabilizes the size and shape of the fabric. The parameter range ensures the treatment effect, making the fabric both soft and comfortable and not easily deformed.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Precise parameter design for cellulase pretreatment: Using 1%-3% cellulase by mass, treatment at 40-60℃ and pH 4.0-6.0 for 15-25 minutes effectively removes impurities from the fabric surface while avoiding excessive fiber damage. This increases the number of hydroxyl groups on the fiber surface by more than 25%, providing sufficient reaction sites for subsequent anti-wrinkle finishing and antibacterial treatment. This treatment overcomes the problem of unstable effects caused by vague pretreatment parameters in traditional methods and solves the technical bottleneck of smooth surfaces and difficulty in adhesion of functional components in high-count fibers. Tests show that the absorption of anti-wrinkle agents and the uniformity of antibacterial agent adhesion are improved after pretreatment.

[0015] 2. Synergistic Optimization and Targeted Design of Multiple Anti-wrinkle Methods: Three anti-wrinkle finishing methods are provided to meet the needs of different fabrics. In particular, the citric acid system and the cationic modified polymaleic acid system are combined for dark-colored fabrics. Through the chemical cross-linking of citric acid and the charge complexation of cationic anti-wrinkle agents, the anti-wrinkle properties and color fastness are improved simultaneously. Among them, the charge density of the cationic modified polymaleic acid anti-wrinkle agent is controlled at 0.6-1.0 meq / g, forming a stable complex with dye anions, so that the wrinkle recovery angle of dark-colored fabrics reaches more than 290°, and the wash fastness is improved, overcoming the technical prejudice of "anti-wrinkle finishing inevitably reduces color fastness" in existing technologies.

[0016] 3. Process Stability Control of Antibacterial Treatment: The antibacterial process employs 20-30 minute immersion, treatment at 40-50℃, and drying at 80-90℃. This ensures a strong bond between the antibacterial agent and the fabric fibers, maintaining a high antibacterial rate even after 50 washes. This solves the long-standing problem of rapid effect degradation with washing in traditional antibacterial treatments. The antibacterial durability of this process is improved, and the antibacterial agent is evenly distributed, avoiding localized antibacterial failure.

[0017] 4. Post-finishing parameter coordination: By combining 2%-4% silicone softener with a 120-140℃ setting treatment, the fabric's dimensional stability is ensured while maintaining a hand feel score above 8 out of 10, breaking the conventional wisdom that "high wrinkle resistance inevitably leads to a stiff hand feel." The drape coefficient of the fabric after this finishing process is optimized to 48%, balancing both the crispness of the cut and the comfort of wearing it. Attached Figure Description

[0018] Figure 1 A flowchart illustrating the preparation method of a high-count blended shirt fabric with antibacterial and wrinkle-resistant properties. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 This invention provides a technical solution: a method for preparing a high-count blended shirt fabric with antibacterial and wrinkle-resistant properties. As we know from existing technologies, while high-count blended shirt fabrics on the market are soft and comfortable, they have significant shortcomings in antibacterial properties, wrinkle resistance, and colorfastness to dark fabrics. For example, the antibacterial effect of ordinary high-count cotton fabric decreases significantly after multiple washes, and its wrinkle resistance also weakens considerably, especially for dark fabrics, which are prone to fading and reduced colorfastness after wrinkle-resistant finishing. These problems seriously affect the wearing experience and lifespan of high-count blended shirts; therefore, developing a preparation method that can simultaneously solve these problems is of great significance.

[0021] Example 1 The following technical methods are used to prepare antibacterial and wrinkle-resistant high-count blended shirt fabric, and the steps are as follows: Step 1: Cellulase Pretreatment The woven fabric is immersed in a treatment solution containing cellulase (2% by mass), at a controlled temperature of 50°C and pH of 5.0 for 20 minutes, followed by washing and drying. This example illustrates that these parameters effectively remove impurities from the fabric surface and increase the number of hydroxyl groups on the fiber surface without causing excessive damage to the fibers.

[0022] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is performed using a combination of methods 1 and 3.

[0023] First, proceed with method one: Immerse the fabric treated in step one into a finishing solution containing citric acid and sodium hypophosphite, with the citric acid having a mass fraction of 8% and the sodium hypophosphite having a mass fraction of 4%, perform two dips and two nips, with a nip rate of 75%, and then bake at 160℃ for 3 minutes.

[0024] Method 3: Since we are preparing a dark-colored fabric, after dyeing the fabric treated in Method 1, we simultaneously apply a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the pH value is controlled at 6.3, the temperature is 80℃, and the heat is maintained for 40 minutes.

[0025] Step 3: Antibacterial treatment An antibacterial agent and a dispersant are mixed to form an antibacterial dispersion. The fabric is then immersed in the antibacterial dispersion for 25 minutes at a temperature controlled at 45°C, followed by drying at 85°C. This antibacterial treatment method allows the antibacterial agent to adhere more evenly to the fabric.

[0026] Step 4: Post-processing The process includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%; the setting process is carried out at 130°C for 2 minutes.

[0027] Example 2 Step 1: Cellulase Pretreatment The woven fabric is immersed in a treatment solution containing cellulase, with a cellulase mass fraction of 1%, at a controlled temperature of 40℃ and a pH value of 4.0 for 15 minutes, followed by washing and drying.

[0028] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is carried out using method 1: The fabric treated in step 1 is immersed in a finishing solution containing citric acid and sodium hypophosphite, with the citric acid having a mass fraction of 7% and the sodium hypophosphite having a mass fraction of 3%, and is subjected to two dips and two nips with a nip-out rate of 70%, and then baked at 150°C for 2 minutes.

[0029] Step 3: Antibacterial treatment The antibacterial agent and dispersant are mixed to form an antibacterial dispersion. The fabric is then immersed in the antibacterial dispersion for 20 minutes at a temperature of 40°C, and then dried at 80°C.

[0030] Step 4: Post-processing The process includes softening and setting. The softening process uses a silicone softener with a mass fraction of 2%; the setting process is carried out at 120°C for 1 minute.

[0031] Example 3 Step 1: Cellulase Pretreatment The woven fabric is immersed in a treatment solution containing cellulase at a mass fraction of 3%, with the temperature controlled at 60℃, the pH value at 6.0, and the treatment time at 25 minutes, followed by washing and drying.

[0032] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is carried out using method 2: The fabric treated in step 1 is immersed in a finishing solution containing 1,2,3,4-butanetetracarboxylic acid and sodium hypophosphite. The mass fraction of 1,2,3,4-butanetetracarboxylic acid is 11%, and the mass fraction of sodium hypophosphite is 6%. The mixture is dipped and rubbed twice, with a padding rate of 85%. Then it is baked at 180°C for 3 minutes.

[0033] Step 3: Antibacterial treatment The antibacterial agent and dispersant are mixed to form an antibacterial dispersion. The fabric is then immersed in the antibacterial dispersion for 30 minutes at a temperature of 50°C, and then dried at 90°C.

[0034] Step 4: Post-processing The process includes softening and setting. The softening process uses a silicone softener with a mass fraction of 4%. The setting process is carried out at 140°C for 3 minutes.

[0035] Example 4 Step 1: Cellulase pretreatment: Immerse the woven fabric in a treatment solution containing cellulase, with a cellulase mass fraction of 2%, controlled at a temperature of 50℃ and a pH value of 5.0, for a treatment time of 20 minutes, followed by washing and drying.

[0036] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is carried out using method 2: The fabric treated in step 1 is immersed in a finishing solution containing 1,2,3,4-butanetetracarboxylic acid and sodium hypophosphite. The mass fraction of 1,2,3,4-butanetetracarboxylic acid is 10%, and the mass fraction of sodium hypophosphite is 5%. The mixture is dipped and rubbed twice, with a roll-off rate of 80%. Then it is baked at 170°C for 2.5 minutes.

[0037] Step 3: Antibacterial treatment: Mix the antibacterial agent and dispersant to form an antibacterial dispersion. Immerse the fabric in the antibacterial dispersion for 25 minutes at a temperature of 45°C, and then dry it at 85°C.

[0038] Step 4: Finishing: This includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%. The setting process is carried out at 130°C for 2 minutes.

[0039] Example 5 (cellulase pretreatment omitted) Step 1: Directly perform anti-wrinkle treatment Anti-wrinkle finishing is performed using a combination of methods one and three.

[0040] Method 1: Immerse the woven fabric in a finishing solution containing citric acid and sodium hypophosphite, with citric acid having a mass fraction of 8% and sodium hypophosphite having a mass fraction of 4%. Perform two dips and two nips, with a nip-out rate of 75%. Then bake at 160°C for 3 minutes.

[0041] Method 3: For dark-colored fabrics, after dyeing, the fabric treated in Method 1 is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the pH value is controlled at 6.3, the temperature is 80℃, and the heat is maintained for 40 minutes.

[0042] Step 2: Antibacterial treatment: Mix the antibacterial agent and dispersant to form an antibacterial dispersion. Immerse the fabric in the antibacterial dispersion for 25 minutes at a temperature of 45°C, and then dry it at 85°C.

[0043] Step 3: Post-processing The process includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%; the setting process is carried out at 130°C for 2 minutes.

[0044] Example 6 (Anti-wrinkle finishing using only method 1) Step 1: Cellulase Pretreatment The woven fabric is immersed in a treatment solution containing cellulase at a mass fraction of 2%, with the temperature controlled at 50℃, the pH value at 5.0, and the treatment time at 20 minutes, followed by washing and drying.

[0045] Step 2: Anti-wrinkle finishing: Use only Method 1 for anti-wrinkle finishing: Immerse the fabric treated in Step 1 into a finishing solution containing citric acid and sodium hypophosphite, with citric acid having a mass fraction of 8% and sodium hypophosphite having a mass fraction of 4%, perform two dips and two nips, with a nip-out rate of 75%, and then bake at 160℃ for 3 minutes.

[0046] Step 3: Antibacterial treatment The antibacterial agent and dispersant are mixed to form an antibacterial dispersion. The fabric is then immersed in the antibacterial dispersion for 25 minutes at a temperature of 45°C, and then dried at 85°C.

[0047] Step 4: Post-processing The process includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%; the setting process is carried out at 130°C for 2 minutes.

[0048] Example 7 (Antibacterial treatment temperature not within range) Step 1: Cellulase Pretreatment The woven fabric is immersed in a treatment solution containing cellulase at a mass fraction of 2%, with the temperature controlled at 50℃, the pH value at 5.0, and the treatment time at 20 minutes, followed by washing and drying.

[0049] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is performed using a combination of methods 1 and 3.

[0050] First, proceed with method one. The fabric treated in step one is immersed in a finishing solution containing citric acid and sodium hypophosphite, with citric acid having a mass fraction of 8% and sodium hypophosphite having a mass fraction of 4%. The mixture is then dipped and rubbed twice, with a roll-off rate of 75%, and then baked at 160°C for 3 minutes.

[0051] Method 3: For dark-colored fabrics, after dyeing, the fabric treated in Method 1 is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the pH value is controlled at 6.3, the temperature is 80℃, and the heat is maintained for 40 minutes.

[0052] Step 3: Antibacterial treatment The antibacterial agent and dispersant are mixed to form an antibacterial dispersion. The fabric is then immersed in the antibacterial dispersion for 25 minutes at a temperature of 60°C, and then dried at 85°C.

[0053] Step 4: Finishing: This includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%. The setting process is carried out at 130°C for 2 minutes.

[0054] Example 8 (Post-treatment and setting temperature not within the range) Step 1: Cellulase pretreatment: Immerse the woven fabric in a treatment solution containing cellulase, with a cellulase mass fraction of 2%, controlled at a temperature of 50℃ and a pH value of 5.0, for a treatment time of 20 minutes, followed by washing and drying.

[0055] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is performed using a combination of methods 1 and 3.

[0056] First, proceed with method one: Immerse the fabric treated in step one into a finishing solution containing citric acid and sodium hypophosphite, with the citric acid having a mass fraction of 8% and the sodium hypophosphite having a mass fraction of 4%, perform two dips and two nips, with a nip rate of 75%, and then bake at 160℃ for 3 minutes.

[0057] Method 3: For dark-colored fabrics, after dyeing, the fabric treated in Method 1 is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the pH value is controlled at 6.3, the temperature is 80℃, and the heat is maintained for 40 minutes.

[0058] Step 3: Antibacterial treatment: Mix the antibacterial agent and dispersant to form an antibacterial dispersion. Immerse the fabric in the antibacterial dispersion for 25 minutes at a temperature of 45°C, and then dry it at 85°C.

[0059] Step 4: Finishing: This includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%. The setting process is carried out at 150°C for 2 minutes.

[0060] Example 9 (The charge density of the cationic modified polymaleic acid anti-wrinkle agent is not within the range) Step 1: Cellulase pretreatment: Immerse the woven fabric in a treatment solution containing cellulase, with a cellulase mass fraction of 2%, controlled at a temperature of 50℃ and a pH value of 5.0, for a treatment time of 20 minutes, followed by washing and drying.

[0061] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is performed using a combination of methods 1 and 3.

[0062] First, proceed with method one: Immerse the fabric treated in step one into a finishing solution containing citric acid and sodium hypophosphite, with the citric acid having a mass fraction of 8% and the sodium hypophosphite having a mass fraction of 4%, perform two dips and two nips, with a nip rate of 75%, and then bake at 160℃ for 3 minutes.

[0063] Method 3: For dark-colored fabrics, after dyeing, the fabric treated in Method 1 is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.5 meq / g, the pH value is controlled at 6.3, the temperature is 80℃, and the heat is maintained for 40 minutes.

[0064] Step 3: Antibacterial treatment: Mix the antibacterial agent and dispersant to form an antibacterial dispersion. Immerse the fabric in the antibacterial dispersion for 25 minutes at a temperature of 45°C, and then dry it at 85°C.

[0065] Step 4: Finishing: This includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%. The setting process is carried out at 130°C for 2 minutes.

[0066] Example 10 (without antibacterial treatment) Step 1: Cellulase pretreatment: Immerse the woven fabric in a treatment solution containing cellulase, with a cellulase mass fraction of 2%, controlled at a temperature of 50℃ and a pH value of 5.0, for a treatment time of 20 minutes, followed by washing and drying.

[0067] Step 2: Anti-wrinkle finishing: Anti-wrinkle finishing is performed using a combination of methods 1 and 3.

[0068] First, proceed with method one: Immerse the fabric treated in step one into a finishing solution containing citric acid and sodium hypophosphite, with the citric acid having a mass fraction of 8% and the sodium hypophosphite having a mass fraction of 4%, perform two dips and two nips, with a nip rate of 75%, and then bake at 160℃ for 3 minutes.

[0069] Method 3: For dark-colored fabrics, after dyeing, the fabric treated in Method 1 is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the pH value is controlled at 6.3, the temperature is 80℃, and the heat is maintained for 40 minutes.

[0070] Step 3: Finishing: This includes softening and setting. The softening process uses a silicone softener with a mass fraction of 3%. The setting process is carried out at 130°C for 2 minutes.

[0071] III. Parameter Comparison Table for Different Embodiments IV. Performance Testing and Result Analysis We conducted performance tests on the fabrics prepared in the above 10 embodiments. The test items included antibacterial rate (against Escherichia coli and Staphylococcus aureus), wrinkle recovery angle, color fastness (only for dark fabrics), tensile strength, and hand feel score. The test results are shown in the table below: Based on existing technology, we know that traditional high-count blended shirt fabrics typically have an antibacterial rate of less than 80% against Escherichia coli and Staphylococcus aureus, a wrinkle recovery angle of around 200°, a color fastness of mostly grade 3 for dark-colored fabrics, a breaking strength of about 3.0 cN / dtex, and a low hand feel score of mostly 5-6 points.

[0072] By comparing our embodiments with conventional techniques, we can see that Embodiment 1 exhibits the best performance in all aspects. This is because Embodiment 1 employs the optimal combination of parameters, with each step working synergistically to maximize its effectiveness.

[0073] Comparing Examples 1 and 5, Example 5 omits the cellulase pretreatment step, resulting in a significant decrease in its antibacterial rate, wrinkle recovery angle, color fastness, breaking strength, and hand feel score. This demonstrates that cellulase pretreatment effectively removes impurities from the fabric surface and increases the number of hydroxyl groups on the fiber surface, providing better adhesion points for subsequent wrinkle-resistant finishing and antibacterial treatments, thereby improving the overall performance of the fabric. This is a key difference between this invention and some existing technologies that either omit pretreatment or perform inappropriate pretreatment.

[0074] Compared to Example 6, Example 6 only uses Method 1 for wrinkle-resistant finishing, resulting in lower wrinkle recovery angle and color fastness compared to Example 1. Combining Method 1 and Method 3 in wrinkle-resistant finishing can more comprehensively improve the wrinkle resistance of the fabric. Especially for dark-colored fabrics, the addition of Method 3 effectively improves color fastness, representing a significant improvement over single wrinkle-resistant finishing methods in the prior art.

[0075] A comparison of Examples 1 and 7 shows that the antibacterial effect decreases when the antibacterial treatment temperature is outside the appropriate range. A suitable antibacterial treatment temperature ensures that the antibacterial agent adheres better to the fabric, exerting the best antibacterial effect. This is determined by the present invention through multiple experiments, unlike the arbitrary setting of antibacterial treatment temperatures in existing technologies.

[0076] Compared to Example 8, Example 8 had an excessively high finishing temperature, resulting in a decrease in the hand feel score. A reasonable finishing temperature can maintain good hand feel while ensuring fabric dimensional stability, which is an advantage of this invention in process parameter control.

[0077] Compared with Example 9, the charge density of the cationic modified polymaleic acid anti-wrinkle agent in Example 9 was not within a suitable range, resulting in a decrease in its antibacterial rate and color fastness. A suitable charge density allows the anti-wrinkle agent to better bind with the dye, improving color fastness, and also contributing to the improvement of antibacterial properties. This is a creative manifestation of the present invention in the selection and parameter control of anti-wrinkle agents.

[0078] The comparison between Example 1 and Example 10 is very obvious. Example 10 did not undergo antibacterial treatment and had an extremely low antibacterial rate. This fully illustrates the importance of the antibacterial treatment step. The antibacterial treatment method of the present invention can effectively improve the antibacterial performance of the fabric, which is different from some existing technologies that do not perform antibacterial treatment or have poor antibacterial treatment effects.

[0079] In summary: Currently available methods for preparing high-count blended shirt fabrics have several shortcomings. In terms of pretreatment, some methods omit cellulase pretreatment, while others, though performed, have inappropriate parameter settings, resulting in minimal improvement in fabric performance. Regarding wrinkle-resistant finishing, many employ a single wrinkle-resistant method, which is inadequate for addressing colorfastness issues in dark-colored fabrics. In antibacterial treatment, the selection of antibacterial agents and treatment parameters are unsuitable, leading to poor and short-lasting antibacterial effects. Finally, in post-finishing, improper control of setting temperature and softener dosage affects the fabric's hand feel and dimensional stability.

[0080] In this invention: 1. Optimal parameter settings for cellulase pretreatment: This invention determines the range of cellulase mass fraction (1%-3%), temperature (40-60℃), pH value (4.0-6.0), and treatment time (15-25 minutes). In the optimal embodiment, parameters of 2%, 50℃, pH value, and 20 minutes are used, which can effectively remove impurities from the fabric surface and increase the number of hydroxyl groups on the fiber surface, laying a good foundation for subsequent steps. This is significantly different from the unreasonable pretreatment parameters in existing technologies. Through this pretreatment step, various properties of the fabric can be significantly improved.

[0081] 2. Combination and Parameter Optimization of Multiple Anti-wrinkle Finishing Methods: This invention provides three anti-wrinkle finishing methods, especially combining Method 1 and Method 3 for dark-colored fabrics, which can simultaneously improve wrinkle resistance and color fastness. Furthermore, the parameters of each method have been optimized, such as the ratio of citric acid and sodium hypophosphite in Method 1, and the baking temperature and time. This solves the problems of poor performance from a single anti-wrinkle finishing method in existing technologies, as well as the low color fastness of dark-colored fabrics.

[0082] 3. Rationality of the antibacterial treatment process: The antibacterial treatment of this invention uses appropriate immersion time, temperature, and drying temperature, which allows the antibacterial agent to adhere evenly and firmly to the fabric, ensuring the durability of the antibacterial effect. Compared with the simple and ineffective antibacterial treatment processes in the prior art, this invention has significant advantages.

[0083] 4. Precise control of finishing parameters: In the subsequent finishing process, this invention makes reasonable settings for the amount of silicone softener and the setting temperature and time, which can ensure both the soft hand feel of the fabric and the stability of the fabric dimensions. This is different from the problem of poor fabric hand feel or unstable dimensions caused by improper control of finishing parameters in the prior art.

[0084] Through the detailed description and performance test analysis of the above embodiments, we can see that the preparation method of the antibacterial and wrinkle-resistant high-count blended shirt fabric provided by the present invention, through reasonable cellulase pretreatment, optimized wrinkle-resistant finishing methods and parameters, appropriate antibacterial treatment processes, and precise control of post-finishing parameters, produces a fabric that exhibits excellent performance in terms of antibacterial properties, wrinkle resistance, color fastness, tensile strength, and hand feel. Compared with the prior art, the various steps of the present invention work synergistically to solve many problems existing in the prior art. Through reasonable parameter settings and the synergistic effect of multiple processes, this preparation method has broad application prospects and can provide consumers with higher quality, more comfortable, and more durable high-count blended shirt fabrics. With the promotion and application of this technology, it will drive the further development of the high-count blended shirt fabric industry.

Claims

1. A method for preparing antibacterial and wrinkle-resistant high-count blended shirt fabric, characterized in that: Includes the following steps: Step 1: Cellulase pretreatment: Immerse the woven fabric in a treatment solution containing cellulase, with a cellulase mass fraction of 1%-3%, controlled temperature of 40-60℃, pH value of 4.0-6.0, and treatment time of 15-25 minutes, followed by washing and drying. Step Two: Anti-wrinkle finishing, choose at least one of the following methods: Method 1: Immerse the fabric treated in step 1 into a finishing solution containing citric acid and sodium hypophosphite, with the citric acid mass fraction being 7%-9% and the sodium hypophosphite mass fraction being 3%-5%. Perform two dips and two nips, with a nip-out rate of 70%-80%. Then bake at 150-170℃ for 2-4 minutes. Method 2: Immerse the fabric treated in step 1 into a finishing solution containing 1,2,3,4-butanetetracarboxylic acid and sodium hypophosphite. The mass fraction of 1,2,3,4-butanetetracarboxylic acid is 9%-11%, and the mass fraction of sodium hypophosphite is 4%-6%. Perform two dips and two nips, with a nip rate of 75%-85%. Then bake at 160-180℃ for 2-3 minutes. Method 3: For dark-colored fabrics, after dyeing, the fabric treated in step one is simultaneously treated with a cationic modified polymaleic acid anti-wrinkle agent for anti-wrinkle finishing. The charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.6-1.0 meq / g, the pH value is controlled at 5.5-7.0, the temperature is 70-90℃, and the heat is maintained for 30-50 minutes. Step 3: Antibacterial treatment, using an antibacterial agent to treat the fabric treated in Step 2; Step 4: Finishing, including softening and shaping.

2. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step one, the raw materials of the high-count blended shirt fabric include high-count cotton fiber, Modal fiber and PTT fiber, which are spun together in a mass ratio of 50:30:

20. The high-count cotton fiber has a count of 120-150.

3. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step one, the mass fraction of cellulase is 2%, the temperature is 50℃, the pH value is 4.5-5.5, and the treatment time is 20 minutes.

4. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step two, the citric acid mass fraction is 8%, the sodium hypophosphite mass fraction is 4%, the roll residue is 75%, the baking temperature is 160℃, and the baking time is 3 minutes.

5. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step two, method two, the mass fraction of 1,2,3,4-butanetetracarboxylic acid is 10%, the mass fraction of sodium hypophosphite is 5%, the roll residue is 80%, the baking temperature is 170℃, and the baking time is 2.5 minutes.

6. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step two, method three, the charge density of the cationic modified polymaleic acid anti-wrinkle agent is 0.8 meq / g, the treatment temperature is 80℃, the treatment time is 40 minutes, and the pH value is controlled at 6.0-6.

5.

7. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step three, the antibacterial treatment involves mixing an antibacterial agent with a dispersant to form an antibacterial dispersion, immersing the fabric in the antibacterial dispersion for 20-30 minutes at a temperature of 40-50°C, and then drying it at 80-90°C.

8. The method for preparing the antibacterial and wrinkle-resistant high-count blended shirt fabric as described in claim 1, characterized in that: In step four, the softening treatment uses an organosilicon softener with a mass fraction of 2%-4%, and the setting treatment is carried out at 120-140℃ for 1-3 minutes.

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