A deodorant non-iron shirt and a preparation method thereof

Abstract

This invention discloses a wrinkle-free, odor-neutralizing, whitening-locking shirt, comprising a shirt body, which includes a shirt substrate made of 100% cotton fibers. The cotton fibers of the shirt substrate are cross-linked with wrinkle-free resin cross-linking material, and the surface of the cotton fibers is bonded with an odor-neutralizing agent linked by covalent bonds. The wrinkle-free resin cross-linking material contains a DP300 wrinkle-free resin cross-linking structure, and the odor-neutralizing agent contains an OX20 odor-neutralizing component. The wrinkle recovery angle of the shirt substrate is not less than 180°. This invention discloses a manufacturing process for a wrinkle-free, odor-neutralizing, whitening-locking shirt, which sequentially involves garment preparation, garment pretreatment, wrinkle-free liquid preparation, wrinkle-free padding treatment, wrinkle-free pre-drying and setting, odor-neutralizing padding treatment, odor-neutralizing padding drying and fixing, high-temperature baking and setting, and performance testing. This process solves the problems of residual odor, easy yellowing, poor durability, and poor wrinkle resistance in traditional cotton fiber shirts.

Description

Technical Field

[0001] This invention relates to the field of textile and apparel technology, specifically to a non-iron, odor-free, white-locking shirt and its preparation method. Background Technology

[0002] Traditional light-colored cotton shirts have the following technical drawbacks in actual wear and storage: 1. Odor Residue Issue: Cotton fibers easily absorb odor sources such as isovaleric acid (IVA) from human sweat. After prolonged wear, sweat odor and body odor are easily produced, which are difficult to completely remove with ordinary washing, affecting the wearing experience. 2. Yellowing problem: Cotton fibers are prone to oxidation under long-term wear, washing and light exposure, which leads to a decrease in whiteness and dullness of the fabric, damaging the shirt's clean appearance; 3. Problem of short-lasting function: Most existing odor-removing finishing agents are surface-adhesive to the fabric at different stages. After multiple washes, their function quickly declines and cannot achieve long-lasting odor removal. Some odor-removing additives can easily clog fiber pores, affecting the breathability and comfort of the fabric. 4. Poor wrinkle resistance: Traditional cotton shirts are prone to wrinkling and require frequent ironing after wearing. This is especially inconvenient when used in business or professional settings, and the ironing process may affect the whiteness and odor removal function of the fabric.

[0003] To address the aforementioned issues, this invention aims to develop an odor-neutralizing, whitening, and wrinkle-free shirt. Through a post-finishing high-temperature fixation process that integrates odor neutralization, whitening, and wrinkle-free finishing, it achieves four benefits: efficient odor neutralization, yellowing prevention and whitening, washability and stability, and wrinkle resistance. This solves the problems of residual odor, easy yellowing, poor durability, and poor wrinkle resistance in traditional cotton fiber shirts, while also balancing functionality and convenience. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing light-colored shirts and provide an odor-free, white-locking, wrinkle-free shirt. Through an integrated finishing process of odor-free, white-locking, and wrinkle-free finishing, it achieves efficient adsorption and decomposition of human odors, inhibits fabric oxidation and yellowing, and provides wrinkle-free and anti-wrinkle shaping. This ensures that the odor-free and wrinkle-free functions are durable and washable, while also taking into account breathability, comfort, neat appearance, and easy care, meeting the long-term wearing needs of business and professional scenarios.

[0005] The present invention is implemented as follows: a deodorizing, whitening, and wrinkle-free shirt, comprising a shirt body, wherein the shirt body comprises a shirt substrate made of 100% cotton fiber, wherein the cotton fibers of the shirt substrate are cross-linked with wrinkle-free resin cross-linking material, and the surface of the cotton fibers of the shirt substrate is bonded with deodorizing additives connected by covalent bonds.

[0006] In one embodiment of the present invention, the wrinkle-free resin crosslinker comprises a DP300 wrinkle-free resin crosslinking structure, the deodorizing agent comprises an OX20 deodorizing component, and the wrinkle recovery angle of the shirt substrate is not less than 180°.

[0007] This invention also provides a method for preparing an odor-neutralizing, white-locking, wrinkle-free shirt, comprising the following steps: S1 Garment Preparation: Select 100% cotton fiber fabric, cut and sew the fabric into a business shirt pattern, complete the basic processes such as conventional sewing, overlocking, and ironing to obtain a basic shirt; S2 Garment Pretreatment: Place the above-mentioned basic shirt into an industrial washing machine, add neutral detergent, wash and spin dry, take out the basic shirt and lay it flat to avoid wrinkles, and obtain the pretreated shirt. Preparation of S3 No-Wrinkle Liquid: To prepare the no-wrinkle liquid, weigh DP300 no-wrinkle resin, magnesium chloride catalyst and polyether modified silicone oil softener, add room temperature water, stir until completely dissolved, and prepare a uniform no-wrinkle finishing solution. S4 wrinkle-free padding treatment: Immerse the pre-treated shirt in the prepared wrinkle-free finishing solution for 8 minutes, and then pad it evenly with a padding machine, controlling the padding rate at 75%–85% to ensure that the wrinkle-free resin fully penetrates into the cotton fibers of all parts of the shirt. S5 Wrinkle-Free Pre-drying and Shaping: Lay the wrinkle-free impregnation-treated shirt flat on the mesh belt of the hot air dryer to remove excess moisture and perform preliminary fixation of the wrinkle-free resin; S6 Odor-Cleansing Padding Treatment: Weigh 3.0% of the shirt's weight of OX20 odor-cleansing agent and 0.5-1.5% of the shirt's weight of lemon polypeptide zinc S90, and add 100% warm water by weight of the shirt to prepare an odor-cleansing agent working solution. Then, immerse the pre-dried and set shirt in the prepared odor-cleansing agent working solution and paddle evenly to ensure that the agent fully penetrates into the fibers of all parts of the shirt. The padding rate should be controlled at 70%-80%. S7 Odor-Cleansing Impregnation, Drying, and Fixing: Lay the shirt after odor-cleansing impregnation flat on the mesh belt of the hot air dryer, set the temperature to 130℃, and match the running speed to a drying time of 15 seconds to remove excess moisture and initially fix the odor-cleansing agent. S8 High-Temperature Baking and Shaping: Place the dried shirt into a high-temperature baking machine, set the temperature to 150℃, and run for 400 seconds to allow the deodorizing agent to covalently bond with the cotton fiber and the wrinkle-free resin to cross-link and solidify with the cotton fiber, thereby achieving the deodorizing and whitening functions and the wrinkle-free function. Then, cool and iron the shirt to finally obtain the deodorizing, whitening, and wrinkle-free shirt. S9 Performance Testing: After the above-obtained odor-removing, whitening, and wrinkle-free shirts undergo odor-removing performance testing, wrinkle-free performance testing, washability stability testing, and yellowing-inhibiting and whitening-locking performance testing, and then pass the finished product integrity inspection, they are packaged and stored.

[0008] As one embodiment of the present invention, in step S2: washing and dehydration includes pre-washing in warm water at 40°C for 10 minutes to remove sewing residue and thread ends, and then dehydrating until the moisture content is ≤50%.

[0009] In one embodiment of the present invention, in step S3: the weight of the DP300 wrinkle-free resin is 2.5-3.0% of the weight of the base shirt, the weight of the magnesium chloride catalyst is 0.8-1% of the weight of the base shirt, the weight of the polyether modified silicone oil softener is 0.3-0.5% of the weight of the base shirt, and the weight of the room temperature water is 200-250% of the weight of the base shirt.

[0010] In one embodiment of the present invention, in step S5: the hot air dryer is set to 105°C and the operating speed is matched with a 30-second pre-drying time.

[0011] As one embodiment of the present invention, the cooling and ironing in S8 includes the following steps: the shirt after high-temperature baking is naturally cooled to room temperature, and the collar, cuffs, placket and other parts of the shirt are ironed using a steam ironing machine, with the ironing temperature controlled at 110℃-120℃, to restore the shirt to a flat and crisp appearance.

[0012] As one embodiment of the present invention, the S9 performance test includes the following steps: the odor reduction performance test includes the following steps: according to the ISO17299-3 standard, the isovaleric acid (IVA) reduction rate is detected by GC-MS gas chromatography-mass spectrometry, and the odor reduction rate is qualified when it reaches 96%; The wrinkle-free performance test includes the following steps: According to the GB / T2660-2017 standard, the shirt wrinkle recovery angle is ≥180° and the appearance flatness after washing reaches level 3.5 or above to be considered qualified.

[0013] As one embodiment of the present invention, the S9 performance test includes the following steps: after 20 standard washes, the odor removal function retention rate is ≥90%, the wrinkle-free performance has no significant decay, the wrinkle recovery angle is still ≥170°, and the appearance flatness is maintained at level 3 or above to be considered qualified. The yellowing suppression and whitening performance test includes the following steps: after ultraviolet accelerated aging test, the fabric whiteness retention rate is ≥95% to be qualified.

[0014] As one embodiment of the present invention, the fabric weight of the cotton fiber fabric is 140-150 grams per square meter.

[0015] The beneficial effects of this invention are: 1. Highly effective odor elimination: It reduces the odor of isovaleric acid (IVA), a source of human body odor, by 92%–96%. It effectively absorbs and decomposes sweat odor and body odor, keeping clothes fresh even after long-term wear. It effectively inhibits the oxidation and yellowing of cotton fibers, and after long-term wear and storage, the whiteness remains stable and does not darken, maintaining the clean appearance of shirts. The odor-eliminating agent and wrinkle-free resin do not clog the fiber pores, retaining the natural moisture-absorbing and breathable properties of cotton fibers. The addition of softener improves the feel of the fabric, keeping it dry and comfortable all day long. It is safe and non-irritating to wear next to the skin. 2. Stable and washable: The 150℃ high-temperature baking and bonding process firmly binds the deodorizing ingredients, wrinkle-free resin and fibers. After repeated washing, the deodorizing and wrinkle-free functions are still retained for a long time without significant attenuation, and the two functions do not interfere with each other. 3. Wrinkle-free and easy to care for: Through wrinkle-free finishing process, the shirt has excellent wrinkle recovery performance. It can maintain its crispness and flatness without additional ironing after washing, making it suitable for business and professional occasions, improving the convenience of wearing, and ensuring that the odor-free and wrinkle-free function is evenly distributed throughout the shirt, avoiding functional damage caused by cutting and sewing after the fabric is finished. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention, making other features, objects, and characteristics of the invention more apparent. The illustrative embodiments of the invention, along with their descriptions, are used to explain the invention and do not constitute an undue limitation of the invention.

[0017] Figure 1 This is a flowchart of the preparation process of the method of the present invention; Figure 2 This is a schematic diagram illustrating the actual effect of the present invention; Figure 3 These are experimental comparison diagrams of embodiments and comparative examples of the present invention; Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] like Figures 1-3 As shown, a deodorizing, whitening, and wrinkle-free shirt includes a shirt body 1, which includes a shirt base made of 100% cotton fibers. The cotton fibers of the shirt base are cross-linked with wrinkle-free resin cross-linking agents, and the surface of the cotton fibers of the shirt base is bonded with deodorizing additives linked by covalent bonds.

[0020] The wrinkle-free resin crosslinker contains a DP300 wrinkle-free resin crosslinking structure, the deodorizing agent contains OX20 deodorizing ingredients, and the wrinkle recovery angle of the shirt substrate is not less than 180°.

[0021] A method for preparing an odor-neutralizing, white-locking, wrinkle-free shirt includes the following steps: S1 Garment Preparation: Select 100% cotton fiber fabric, cut and sew the fabric into a business shirt pattern, complete the basic processes such as conventional sewing, overlocking, and ironing to obtain a basic shirt; S2 Garment Pretreatment: Place the above-mentioned basic shirt into an industrial washing machine, add neutral detergent, wash and spin dry, take out the basic shirt and lay it flat to avoid wrinkles, and obtain the pretreated shirt. Preparation of S3 No-Wrinkle Liquid: To prepare the no-wrinkle liquid, weigh DP300 no-wrinkle resin, magnesium chloride catalyst and polyether modified silicone oil softener, add room temperature water, stir until completely dissolved, and prepare a uniform no-wrinkle finishing solution. S4 wrinkle-free padding treatment: Immerse the pre-treated shirt in the prepared wrinkle-free finishing solution for 8 minutes, and then pad it evenly with a padding machine, controlling the padding rate at 75%–85% to ensure that the wrinkle-free resin fully penetrates into the cotton fibers of all parts of the shirt. S5 Wrinkle-Free Pre-drying and Shaping: Lay the wrinkle-free impregnation-treated shirt flat on the mesh belt of the hot air dryer to remove excess moisture and perform preliminary fixation of the wrinkle-free resin; S6 Odor-Cleansing Padding Treatment: Weigh 3.0% of the shirt's weight of OX20 odor-cleansing agent and add 100% of the shirt's weight of warm water to prepare an odor-cleansing agent working solution. Then, immerse the pre-dried and set shirt in the prepared odor-cleansing agent working solution and paddle evenly to ensure that the agent fully penetrates into the fibers of all parts of the shirt. The padding rate should be controlled at 70%–80%. S7 Odor-Cleansing Impregnation, Drying, and Fixing: Lay the shirt after odor-cleansing impregnation flat on the mesh belt of the hot air dryer, set the temperature to 130℃, and match the running speed to a drying time of 15 seconds to remove excess moisture and initially fix the odor-cleansing agent. S8 High-Temperature Baking and Shaping: Place the dried shirt into a high-temperature baking machine, set the temperature to 150℃, and run for 400 seconds to allow the deodorizing agent to covalently bond with the cotton fiber and the wrinkle-free resin to cross-link and solidify with the cotton fiber, thereby achieving the deodorizing and whitening functions and the wrinkle-free function. Then, cool and iron the shirt to finally obtain the deodorizing, whitening, and wrinkle-free shirt. S9 Performance Testing: After the above-obtained odor-removing, whitening, and wrinkle-free shirts undergo odor-removing performance testing, wrinkle-free performance testing, washability stability testing, and yellowing-inhibiting and whitening-locking performance testing, and then pass the finished product integrity inspection, they are packaged and stored.

[0022] In step S2: washing and dehydration includes pre-washing in 40℃ warm water for 10 minutes to remove sewing residue and loose threads, and then dehydrating until the moisture content is ≤50%.

[0023] In step S3: the weight of DP300 wrinkle-free resin is 2.5-3.0% of the weight of the base shirt, the weight of magnesium chloride catalyst is 0.8-1% of the weight of the base shirt, the weight of polyether modified silicone oil softener is 0.3-0.5% of the weight of the base shirt, and the weight of room temperature water is 200-250% of the weight of the base shirt.

[0024] In step S5: the hot air dryer is set to 105℃, and the operating speed is matched with a 30-second pre-drying time.

[0025] The cooling and ironing process in S8 includes the following steps: After the shirt has been baked at high temperature, it is allowed to cool naturally to room temperature. A steam ironing machine is then used to iron the collar, cuffs, placket, and other parts of the shirt, controlling the ironing temperature at 110℃-120℃ to restore the shirt to a smooth and crisp appearance.

[0026] In the S9 performance test: the odor reduction performance test includes the following steps: according to the ISO17299-3 standard, the isovaleric acid (IVA) reduction rate is detected by GC-MS gas chromatography-mass spectrometry. An odor reduction rate of 96% is considered qualified. The wrinkle-free performance test includes the following steps: According to the GB / T2660-2017 standard, the shirt is qualified if the wrinkle recovery angle is ≥180° and the appearance smoothness after washing reaches level 3.5 or above.

[0027] In the S9 performance test: the washability stability test includes the following steps: after 20 standard washes, the odor removal function retention rate is ≥90%, the wrinkle-free performance has no significant decline, the wrinkle recovery angle is still ≥170°, and the appearance flatness is maintained at level 3 or above to be considered qualified. The yellowing suppression and whitening performance test includes the following steps: After ultraviolet accelerated aging test, the fabric whiteness retention rate is ≥95% to be qualified.

[0028] like Figures 1-3 As shown, this invention provides a wrinkle-free, odor-free, and white-locking shirt. The shirt includes a shirt body, which comprises a shirt base made of 100% cotton fibers. It aims to solve the problems of traditional cotton shirts being prone to wrinkling, yellowing, retaining sweat odor, and lacking functional durability.

[0029] The core improvement of this invention lies in the following: A wrinkle-free resin crosslinking material containing a DP300 structure is crosslinked within the cotton fibers, forming a stable three-dimensional network support structure. This results in a wrinkle recovery angle of ≥180° for the shirt substrate, thereby achieving excellent wrinkle-free and anti-wrinkle performance. Simultaneously, the cotton fiber surface is treated with an odor-neutralizing padding process combined with high-temperature drying and fixation, resulting in the bonding of OX20 odor-neutralizing agent and lemon polypeptide zinc S90 to the cotton fiber surface. This agent is firmly connected to the fiber through covalent bonds, rather than through ordinary physical adsorption, ensuring that sweat odors such as isovaleric acid are efficiently decomposed and resistant to washing.

[0030] To prepare the aforementioned odor-neutralizing, white-locking, wrinkle-free shirt, the specific embodiments of the present invention are as follows. Example 1: S1 Garment Preparation: Long-staple cotton yarn is selected and woven into a 100% cotton woven fabric with a weight of 140-150 g / m². Cotton fiber fabric has good breathability and skin-friendliness, serving as the base material for the shirt. Coats sewing thread is used for basic processes such as splicing, attaching the collar, attaching the sleeves, buttonholes, and sewing on buttons. After completion, preliminary pressing is performed to ensure the cut pieces are flat, resulting in a basic shirt with a total weight of 240-260 grams. S2 Garment Pre-treatment: Place the basic shirts described above into an industrial washing machine. Add 40℃ warm water and a non-ionic neutral detergent, and wash for 10 minutes to thoroughly remove sizing agents, oil stains, and lint generated during the weaving and sewing process. Then, centrifuge to remove excess water, controlling the moisture content of the shirt to approximately 45% after dehydration. Remove the shirts and lay them flat on a clean surface, smoothing them by hand to prevent creases, resulting in the pre-treated shirts. Preparation of S3 No-Wrinkle Liquid: To prepare the no-wrinkle liquid, weigh DP300 no-wrinkle resin, magnesium chloride catalyst and polyether modified silicone oil softener, add room temperature water, stir until completely dissolved, and prepare a uniform no-wrinkle finishing solution.

[0031] The proportions of each component are as follows: DP300 wrinkle-free resin is 2.5-3.0% of the weight of the base shirt, magnesium chloride catalyst is 0.8-1% of the weight of the base shirt, polyether modified silicone oil softener is 0.3-0.5% of the weight of the base shirt, and room temperature water is 200-250% of the weight of the base shirt.

[0032] According to an embodiment of the present invention, the weight of the basic shirt is 250g, and the wrinkle-free finishing solution is prepared in the following proportions: Weigh out 7.5g of DP300 wrinkle-free resin, which is 3.0% of the weight of the basic shirt; Weigh out 2.5g of magnesium chloride (MgCl2·6H2O) as a catalyst, which is 1% of the weight of the base shirt; Weigh out 1.0g of polyether-modified silicone oil softener, which is 0.4% of the weight of the base shirt; Add 600mL of room temperature water, which is 240% of the weight of the base shirt.

[0033] Place the above components in a container and stir with a mechanical stirrer at 300 rpm for 5 minutes until a uniform, flocculent, non-iron finishing solution is formed. S4 wrinkle-free padding treatment: Immerse the pre-treated shirt completely in the wrinkle-free working solution for 8 minutes to ensure that the wrinkle-free resin fully penetrates all parts such as the collar, cuffs, and placket; use a uniform padding machine for padding, and control the residual rate at 75%-85% to ensure that the resin is evenly distributed and there is no liquid accumulation. S5 Wrinkle-Free Pre-drying and Shaping: After the shirt is soaked in wrinkle-free working liquid, it is laid flat on the mesh belt of the hot air dryer. The temperature is set at 105℃ and the running speed is matched with a 30-second pre-drying time to completely remove excess moisture and initially fix the wrinkle-free resin to prevent resin loss during subsequent deodorizing finishing. S6 Odor-Cleansing Padding Treatment: Weigh 7.5 grams of OX20 odor-cleansing agent (3.0% of shirt weight) and 2.5 grams of lemon polypeptide zinc S90 (1% of shirt weight), and add 250 grams of warm water to prepare the odor-cleansing agent working solution. The main components of OX20 odor-cleansing agent are C3-C6 aliphatic organic compounds, with a structure similar to C3-C6 ethylene polyether and vinyl alcohol polyether. It neutralizes body odor, sweat odor, and other organic odors at their source by binding with odor molecules through polymer molecules. It contains no biocides, no metals, and is non-irritating to the skin. Then, immerse the pre-dried and set shirt in the prepared odor-cleansing agent working solution, and evenly pad the shirt to ensure the agent fully penetrates the fibers of all parts of the shirt. The padding rate should be controlled at 70%–80%.

[0034] Lemon peptide zinc S90 is a zinc ricinoleate complex amino acid pre-activator, CAS number 13040-19-2. It can be used in the same bath as OX20 deodorizing agent, both with neutral pH, without affecting their respective curing mechanisms. Both are non-toxic and non-irritating. Lemon peptide zinc S90 can complement the mechanism of OX20 deodorizing agent, expanding the deodorizing range from sweat odor to ammonia, formaldehyde, hydrogen sulfide, TVOC and other odors, significantly improving the overall deodorizing efficiency. S7 Odor-Free Impregnation, Drying, and Fixing: Lay the odor-free impregnation-treated shirt flat on the mesh belt of the hot air dryer, set the temperature to 130℃, and match the running speed to a drying time of 15 seconds to remove excess moisture and initially fix the odor-free additives, while avoiding high temperature damage to the wrinkle-free shaping effect. S8 High-Temperature Baking and Shaping: Place the dried shirt into a high-temperature baking machine, set the temperature to 150℃, and run for 400 seconds. This allows the deodorizing agent to covalently bond with the cotton fibers and the wrinkle-free resin to cross-link and solidify with the cotton fibers, achieving the deodorizing and whitening functions as well as the wrinkle-free function. After cooling and ironing, the deodorizing, whitening, and wrinkle-free shirt is finally obtained.

[0035] The cooling and ironing process includes the following steps: After the shirt has been baked at high temperature, it is allowed to cool naturally to room temperature. A steam ironing machine is then used to iron the collar, cuffs, placket, and other parts of the shirt, controlling the ironing temperature at 110℃-120℃ to restore the shirt to a smooth and crisp appearance.

[0036] S9 Performance Testing: After the above-obtained odor-removing, whitening, and wrinkle-free shirts undergo odor-removing performance testing, wrinkle-free performance testing, washability stability testing, and yellowing-inhibiting and whitening-locking performance testing, and then pass the finished product integrity inspection, they are packaged and stored.

[0037] The specific testing experiments include the following: (1) Odor removal performance test: According to ISO17299-3 standard, the reduction rate of isovaleric acid (IVA) was detected by GC-MS gas chromatography-mass spectrometry. After the above steps S1-S8, the odor removal rate of the odor-locking and wrinkle-free shirt reached 96%, which verified that the odor-locking and wrinkle-free shirt prepared by the method of the present invention has a high-efficiency odor removal effect. (2) Wrinkle-free performance test: According to GB / T2660-2017 standard, the wrinkle recovery angle of the shirt is ≥180°, and the appearance flatness of the wrinkle-free shirt after washing reaches level 3.5 or above, and it can maintain its crispness without ironing; (3) Washing stability test: After 20 standard washes, the deodorizing and wrinkle-free shirt was retested. The deodorizing function retention rate was ≥90%, the wrinkle-free performance was not significantly reduced, the wrinkle recovery angle was still ≥170°, and the appearance flatness was maintained at level 3 or above. The quality was qualified. (4) Yellowing suppression and whitening performance test: The anti-yellowing and whitening wrinkle-free shirt was subjected to ultraviolet accelerated aging test. The fabric whiteness retention rate was ≥95%, which verified the yellowing suppression and whitening effect.

[0038] Comparative Example 1: The effect of reducing baking temperature. Based on Example 1, except that the high-temperature baking temperature in step 3 is adjusted to 140°C, the other raw material ratios, process flow and operating parameters are exactly the same as those in Example 1.

[0039] Test results and analysis: like Figure 3 As shown, although Comparative Example 1 maintained its deodorizing performance and reduced isovaleric acid by 96%, its wrinkle-free performance decreased significantly. The wrinkle recovery angle dropped to 165°, lower than the required 180° for wrinkle-free performance, and the smoothness of the appearance after washing was only grade 3.0.

[0040] Cause analysis: Insufficient baking temperature led to inadequate cross-linking reaction between the DP300 wrinkle-free resin and cotton fibers, failing to form a sufficiently stable three-dimensional network structure within the fibers, resulting in insufficient wrinkle resistance. This indicates that a baking temperature of 150℃ is necessary to ensure the wrinkle-free function.

[0041] Comparative Example 2: The effect of reducing the amount of deodorizing agent. Based on Example 1, except that the amount of OX20 deodorizing agent in step 3 is adjusted to 1.0% of the shirt weight, the other raw material ratios, process flow and operating parameters are exactly the same as in Example 1.

[0042] Test results and analysis: such as Figure 3As shown, Comparative Example 2 maintained good wrinkle-free performance with a wrinkle recovery angle of 183°, but its odor-neutralizing performance was significantly reduced. The isovaleric acid reduction rate was only 78%, far below the design standard of 96%. Analysis of the cause: Insufficient dosage of the odor-neutralizing agent resulted in an insufficient number of active groups capable of covalently bonding with the hydroxyl groups on the cotton fiber surface, failing to effectively cover the fiber surface to adsorb and decompose odor molecules. This indicates that an agent dosage of 2.5-3.0% is the effective value for achieving highly efficient odor neutralization.

[0043] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0044] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A non-iron, odor-neutralizing, whitening-locking shirt, characterized in that, The shirt body (1) includes a shirt base made of 100% cotton fibers, wherein the cotton fibers of the shirt base are cross-linked with wrinkle-free resin cross-linking agents, and the surface of the cotton fibers of the shirt base is bonded with deodorizing agents connected by covalent bonds.

2. The odor-neutralizing, white-locking, wrinkle-free shirt according to claim 1, characterized in that, The wrinkle-free resin crosslinker contains a DP300 wrinkle-free resin crosslinking structure, the odor-neutralizing agent contains an OX20 odor-neutralizing component, and the wrinkle recovery angle of the shirt substrate is not less than 180°.

3. A method for preparing an odor-neutralizing, whitening, wrinkle-free shirt, used to prepare the odor-neutralizing, whitening, wrinkle-free shirt as described in claims 1-2, characterized in that, Includes the following steps: S1 Garment Preparation: Select 100% cotton fiber fabric, cut and sew the fabric into a business shirt pattern, complete the basic processes such as conventional sewing, overlocking, and ironing to obtain a basic shirt; S2 Garment Pretreatment: Place the above-mentioned basic shirt into an industrial washing machine, add neutral detergent, wash and spin dry, take out the basic shirt and lay it flat to avoid wrinkles, and obtain the pretreated shirt. Preparation of S3 No-Wrinkle Liquid: To prepare the no-wrinkle liquid, weigh DP300 no-wrinkle resin, magnesium chloride catalyst and polyether modified silicone oil softener, add room temperature water, stir until completely dissolved, and prepare a uniform no-wrinkle finishing solution. S4 wrinkle-free padding treatment: Immerse the pre-treated shirt in the prepared wrinkle-free finishing solution for 8 minutes, and then pad it evenly with a padding machine, controlling the padding rate at 75%–85% to ensure that the wrinkle-free resin fully penetrates into the cotton fibers of all parts of the shirt. S5 Wrinkle-Free Pre-drying and Shaping: Lay the wrinkle-free impregnation-treated shirt flat on the mesh belt of the hot air dryer to remove excess moisture and perform preliminary fixation of the wrinkle-free resin; S6 Odor-Cleansing Padding Treatment: Weigh 3.0% of the shirt's weight of OX20 odor-cleansing agent and 0.5-1.5% of the shirt's weight of lemon polypeptide zinc S90, and add 100% warm water by weight of the shirt to prepare an odor-cleansing agent working solution. Then, immerse the pre-dried and set shirt in the prepared odor-cleansing agent working solution and paddle evenly to ensure that the agent fully penetrates into the fibers of all parts of the shirt. The padding rate should be controlled at 70%-80%. S7 Odor-Cleansing Impregnation, Drying, and Fixing: Lay the shirt after odor-cleansing impregnation flat on the mesh belt of the hot air dryer, set the temperature to 130℃, and match the running speed to a drying time of 15 seconds to remove excess moisture and initially fix the odor-cleansing agent. S8 High-Temperature Baking and Shaping: Place the dried shirt into a high-temperature baking machine, set the temperature to 150℃, and run for 400 seconds to allow the deodorizing agent to covalently bond with the cotton fiber and the wrinkle-free resin to cross-link and solidify with the cotton fiber, thereby achieving the deodorizing and whitening functions and the wrinkle-free function. Then, cool and iron the shirt to finally obtain the deodorizing, whitening, and wrinkle-free shirt. S9 Performance Testing: After the above-obtained odor-removing, whitening, and wrinkle-free shirts undergo odor-removing performance testing, wrinkle-free performance testing, washability stability testing, and yellowing-inhibiting and whitening-locking performance testing, and then pass the finished product integrity inspection, they are packaged and stored.

4. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 3, characterized in that, In step S2: washing and dehydration includes pre-washing in 40℃ warm water for 10 minutes to remove sewing residue and loose threads, and then dehydrating until the moisture content is ≤50%.

5. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 4, characterized in that, In step S3: the weight of the DP300 wrinkle-free resin is 2.5-3.0% of the weight of the base shirt, the weight of the magnesium chloride catalyst is 0.8-1% of the weight of the base shirt, the weight of the polyether modified silicone oil softener is 0.3-0.5% of the weight of the base shirt, and the weight of the room temperature water is 200-250% of the weight of the base shirt.

6. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 5, characterized in that, In step S5: the hot air dryer is set to 105℃ and the operating speed is matched with a 30-second pre-drying time.

7. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 6, characterized in that, The cooling and ironing process in S8 includes the following steps: After the shirt has been baked at high temperature, it is allowed to cool naturally to room temperature. A steam ironing machine is then used to iron the collar, cuffs, placket, and other parts of the shirt, controlling the ironing temperature at 110℃-120℃ to restore the shirt to a smooth and crisp appearance.

8. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 3, characterized in that, In the S9 performance test, the odor reduction performance test includes the following steps: According to the ISO17299-3 standard, the isovaleric acid reduction rate is detected by GC-MS gas chromatography-mass spectrometry. An odor reduction rate of 96% is considered qualified. The wrinkle-free performance test includes the following steps: According to the GB / T2660-2017 standard, the shirt wrinkle recovery angle is ≥180° and the appearance flatness after washing reaches level 3.5 or above to be considered qualified.

9. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 3, characterized in that, In the S9 performance test, the washability stability test includes the following steps: after 20 standard washes, the odor removal function retention rate is ≥90%, the wrinkle-free performance has no significant decay, the wrinkle recovery angle is still ≥170°, and the appearance flatness is maintained at level 3 or above to be considered qualified. The yellowing suppression and whitening performance test includes the following steps: after ultraviolet accelerated aging test, the fabric whiteness retention rate is ≥95% to be qualified.

10. The method for preparing the odor-neutralizing, white-locking, wrinkle-free shirt according to claim 3, characterized in that, The fabric weight of the cotton fiber fabric is 140-150 grams per square meter.

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