Cashmere scarf with antibacterial property and preparation method thereof

Abstract

The invention relates to the technical field of wool scarves, and discloses an antibacterial cashmere scarf and a preparation method thereof.The preparation method includes the following steps of pretreatment of high-quality cashmere, blending of antibacterial fibers, spinning, weaving, antibacterial after-treatment and finished product detection.The surface of the scarf is provided with antibacterial-treated real silk embroidery decorative threads; silver zeolite antibacterial agents are loaded on the real silk threads through an impregnation method, the edge of the scarf is of a special edge covering structure and comprises a built-in antibacterial fiber woven belt and a medical grade antibacterial silica gel edge sealing strip, and the silica gel edge sealing strip contains 3%-5% of triclosan antibacterial agents. Through a dual protection mechanism of fiber embedded antibacterial and surface antibacterial finishing, the problem that a single antibacterial mode is easy to lose efficacy is solved, a synergistic antibacterial effect is generated through compounding of nano-silver and chitosan, and then an antibacterial agent and fibers are firmly combined through a special after-finishing process, so that the antibacterial effect is good. Therefore, the long-acting antibacterial and washing-resistant effects are achieved through multiple antibacterial synergistic effects.

Description

Technical Field

[0001] This invention relates to the field of wool scarf technology, specifically to an antibacterial cashmere scarf and its preparation method. Background Technology

[0002] With increasing emphasis on health, fashion, and environmental protection, the market demand for textiles with antibacterial properties is constantly growing. Cashmere scarves, with their unique warmth, comfortable feel, and elegant design, have become one of the top choices for consumers in winter. However, in existing technologies, textiles, due to their porous and loose structure, easily absorb and breed bacteria, becoming ideal breeding grounds for bacteria. Therefore, to ensure the even distribution of antibacterial fibers in the scarf and improve its overall antibacterial performance, a method for preparing antibacterial cashmere scarves is needed.

[0003] Traditional antibacterial agents such as quaternary ammonium salts and triclosan, while possessing certain antibacterial properties, suffer from drawbacks such as poor washability, easy water solubility, or high cost. This invention aims to provide a scarf combining high-quality cashmere and antibacterial fibers, along with its preparation method. By optimizing the blending process and antibacterial finishing techniques, the antibacterial properties, comfort, and durability of the scarf are improved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an antibacterial cashmere scarf and its preparation method, solving the problem that previous technologies struggled to construct a multi-layered antibacterial synergistic system, resulting in unsatisfactory synergistic effects of long-lasting antibacterial and wash-resistant properties.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing an antibacterial cashmere scarf, comprising the following steps: S1. Pre-treatment of high-quality cashmere: Select cashmere raw materials with fiber fineness ≤18.5μm, and perform grading and impurity removal, ultrasonic cleaning and low-temperature drying; S2, Antibacterial fiber blend: Pretreated cashmere is blended with 15% to 30% by weight of antibacterial modified viscose fiber, wherein the antibacterial fiber contains nano-silver and chitosan composite antibacterial agent; S3, Spinning: 28-32Nm blended yarn is spun using Siro spinning process, and the yarn twist is controlled at 680-720 twists / meter; S4. Weaving: Weaving is done using a double-sided jacquard loom, with the areal density controlled at 180-220g / m², and the weave structure is a composite structure of 2 / 2 twill and plain weave. S5. Antibacterial finishing: Apply antibacterial finishing agent containing quaternary ammonium salt compounds by padding method, baking temperature 110-120℃, time 3-5 minutes; S6. Finished product inspection: including antibacterial performance testing, color fastness testing and dimensional stability testing.

[0006] Preferably, the ultrasonic cleaning in step S1 uses a cleaning solution with a frequency of 40kHz and a temperature of 35-40℃, and the cleaning solution contains 0.5% tea polyphenol extract and 1.5% neutral detergent.

[0007] Preferably, the preparation method of the antibacterial modified viscose fiber in S2 includes: mixing viscose spinning solution with nano-silver particles with a particle size of 30-50nm and chitosan with a deacetylation degree of ≥85% at a mass ratio of 100:1.5:3, and then preparing it by wet spinning.

[0008] Preferably, the spinning of the blended yarn in S3 further includes adding 0.5% to 1% sericin protein auxiliaries, which can improve the cohesion between fibers and maintain natural softness.

[0009] Preferably, in S4, a double warp feeding system is used during weaving, with a ground warp tension of 8-10 cN, a pattern warp tension of 12-15 cN, and a weft density of 22-24 threads / cm.

[0010] Preferably, the antibacterial finishing agent in S5 comprises the following components: 3%–5% dioctadecyl dimethyl ammonium chloride, 2%–3% nano zinc oxide, 4%–6% organosilicon softener, and the balance being deionized water.

[0011] Preferably, a finishing solution containing vitamin E microcapsules is applied after step S5 by padding with a roll-on rate of 80%, followed by drying at 85°C.

[0012] Preferably, an antibacterial cashmere scarf is used in the preparation method of an antibacterial cashmere scarf according to any one of claims 1-7, wherein the scarf has an antibacterial rate of ≥99%, an antibacterial rate of ≥90% after 50 washes, an air permeability of ≥180mm / s, and a drape coefficient of ≤35%.

[0013] Preferably, the scarf surface is provided with antibacterial treated silk embroidery decorative thread, and the silk thread is loaded with silver-loaded zeolite antibacterial agent by impregnation method, with the amount added being 8% to 12% of the weight of the silk.

[0014] Preferably, the scarf edge adopts a special edge-binding structure, including an internal antibacterial fiber woven strip and a medical-grade antibacterial silicone sealing strip, wherein the silicone sealing strip contains 3% to 5% triclosan antibacterial agent.

[0015] This invention provides an antibacterial cashmere scarf and its preparation method. It has the following beneficial effects: 1. This invention solves the problem of easy failure of single antibacterial methods by adopting a dual protection mechanism of fiber embedded antibacterial and surface antibacterial finishing. The composite of nano-silver and chitosan produces a synergistic antibacterial effect: the positive charge of chitosan adsorbs the bacterial cell membrane, and nano-silver penetrates the cell wall to destroy DNA, so that the antibacterial rate is ≥99%. Then, after a special finishing process, the antibacterial agent forms a firm bond with the fiber. After 50 washes, the antibacterial rate is still ≥90%, which is far superior to conventional antibacterial textiles. Thus, multiple antibacterial synergistic effects are achieved to realize the effect of long-lasting antibacterial and wash resistance.

[0016] 2. This invention reduces the impact of antibacterial fibers on softness while maintaining yarn strength by adding sericin auxiliaries, resulting in a drape coefficient of ≤35%, close to the feel of a pure cashmere scarf. Then, a double warp feeding system and dynamic weft density control ensure that the antibacterial fibers are evenly distributed in the fabric, avoiding local antibacterial failure. At the same time, the areal density of 180-220g / m² gives the scarf good breathability (≥180mm / s). The spring antibacterial edging structure and antibacterial embroidery thread form a three-dimensional protective network, solving the technical pain point of traditional scarves where bacteria easily grow on the edges and decorative parts.

[0017] 3. This invention uses tea polyphenol extract to replace traditional chemical disinfectants, reducing bacterial residue in the pretreatment stage without affecting the natural properties of cashmere. Vitamin E microcapsule finishing adds skin care function on the basis of antibacterial properties, and the slow-release properties of microcapsules make the effect lasting. The use of silver-loaded zeolite silk thread and medical-grade silicone edge sealing with biocompatible materials avoids the environmental risks of traditional antibacterial agents (such as triclosan) and meets the requirements of ecological textiles. Attached Figure Description

[0018] Figure 1 This is a schematic flowchart of a method for preparing an antibacterial cashmere scarf according to the present invention. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described 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 the appendix Figure 1 This invention provides an antibacterial cashmere scarf and its preparation method, comprising the following steps: S1. Pre-treatment of high-quality cashmere: Select cashmere raw materials with fiber fineness ≤18.5μm, and perform grading and impurity removal, ultrasonic cleaning and low-temperature drying; S2, Antibacterial Fiber Blend: Pretreated cashmere is blended with 15% to 30% by weight of antibacterial modified viscose fiber. The antibacterial fiber contains nano-silver and chitosan composite antibacterial agent. S3, Spinning: 28-32Nm blended yarn is spun using Siro spinning process, and the yarn twist is controlled at 680-720 twists / meter; S4. Weaving: Weaving is done using a double-sided jacquard loom, with the areal density controlled at 180-220g / m², and the weave structure is a composite structure of 2 / 2 twill and plain weave. S5. Antibacterial finishing: Apply antibacterial finishing agent containing quaternary ammonium salt compounds by padding method, baking temperature 110-120℃, time 3-5 minutes; S6. Finished product inspection: including antibacterial performance testing, color fastness testing and dimensional stability testing.

[0021] Please see the appendix Figure 1 In S1, ultrasonic cleaning uses a cleaning solution with a frequency of 40kHz and a temperature of 35-40℃, containing 0.5% tea polyphenol extract and 1.5% neutral detergent. In S2, the preparation method of antibacterial modified viscose fiber includes mixing viscose spinning solution with nano-silver particles with a particle size of 30-50nm and chitosan with a deacetylation degree ≥85% at a mass ratio of 100:1.5:3, followed by wet spinning. In S3, the spinning of blended yarn also includes adding 0.5%–1% sericin protein auxiliaries, which can improve fiber quality. The weaving process maintains the cohesion between the warp threads and preserves the natural softness. In S4, a double warp feeding system is used during weaving, with a ground warp tension of 8-10 cN, a pattern warp tension of 12-15 cN, and a weft density of 22-24 threads / cm. In S5, the antibacterial finishing agent contains the following components: 3%–5% dioctadecyl dimethyl ammonium chloride, 2%–3% nano zinc oxide, 4%–6% silicone softener, and the remainder is deionized water. After S5, a finishing solution containing vitamin E microcapsules is applied by padding at a pick-up rate of 80%, followed by drying at 85°C.

[0022] Specifically, ultrasonic cleaning involves using a cleaning solution with a frequency of 40kHz and a temperature of 35-40℃. The 40kHz frequency meets most cleaning requirements, and the technology is mature and cost-effective; the 35-40℃ temperature promotes stain emulsification and enhances the cleaning effect.

[0023] Cleaning solution ingredients: The cleaning solution contains 0.5% tea polyphenol extract and 1.5% neutral detergent. Tea polyphenols have natural antibacterial properties, which can aid in cleaning and inhibit the growth of microorganisms; the neutral detergent helps emulsify grease, enhances the cleaning effect, and ensures the cleanliness of the fibers.

[0024] Preparation of antibacterial fibers: The antibacterial modified viscose fiber is prepared by mixing viscose spinning solution with nano-silver particles with a particle size of 30-50 nm and chitosan with a deacetylation degree ≥85% at a mass ratio of 100:1.5:3, and then wet spinning the mixture. Nano-silver has broad-spectrum antibacterial properties and can effectively kill a variety of bacteria and fungi; chitosan enhances the durability of the antibacterial effect and is firmly bound to the fiber, making it less prone to detachment. The mass ratio of 100:1.5:3 is chosen by comprehensively considering the antibacterial effect, fiber strength, and economy.

[0025] Adding sericin auxiliaries: During the spinning process of blended yarns, add 0.5% to 1% sericin auxiliaries. Sericin auxiliaries can improve the cohesion between fibers, making the yarn structure more compact, while maintaining the scarf's natural softness and enhancing wearing comfort.

[0026] Double warp feed system: A double warp feed system is used during weaving to independently control the tension of the ground warp and pattern warp. The double warp feed system can improve weaving precision, ensure the uniformity and consistency of the fabric, and improve the overall quality of the scarf.

[0027] Tension settings: Set the ground warp tension to 8-10 cN and the pattern tension to 12-15 cN. Lower ground warp tension helps maintain the smoothness and softness of the fabric; higher pattern tension ensures the clarity and three-dimensionality of the pattern.

[0028] Weft density setting: The weft density is set to 22-24 threads / cm. This range ensures that the fabric is tight and thick, improving the scarf's warmth and abrasion resistance, while maintaining moderate breathability and enhancing wearing comfort.

[0029] Antibacterial finishing agent: The antibacterial finishing agent contains 3%–5% dioctadecyl dimethyl ammonium chloride, 2%–3% nano zinc oxide, 4%–6% silicone softener, and the balance is deionized water. Dioctadecyl dimethyl ammonium chloride is a cationic surfactant that can adsorb onto the fiber surface and kill bacteria and fungi; nano zinc oxide has excellent antibacterial properties and photocatalytic activity, which can further enhance the antibacterial effect of the fabric; silicone softener can keep the fabric soft and smooth to the touch, improving wearing comfort.

[0030] Vitamin E microcapsule finishing solution: After antibacterial finishing, a finishing solution containing vitamin E microcapsules is applied by padding at an 80% pick-up rate, followed by drying at 85°C. Vitamin E has antioxidant properties, forming an antioxidant layer on the fabric surface, delaying fabric aging, and maintaining the scarf's appearance and quality.

[0031] Please see the appendix Figure 1An antibacterial cashmere scarf is provided, using the aforementioned method for preparing an antibacterial cashmere scarf. The scarf has an antibacterial rate ≥99%, and the antibacterial rate remains ≥90% after 50 washes. It also has an air permeability ≥180mm / s and a drape coefficient ≤35%. The scarf surface is decorated with antibacterial treated silk embroidery threads. The silk threads are loaded with silver zeolite antibacterial agent by an impregnation method, with the amount added being 8% to 12% of the weight of the silk. The scarf edge adopts a special edging structure, including an internal antibacterial fiber braided band and a medical-grade antibacterial silicone sealing strip. The silicone sealing strip contains 3% to 5% triclosan antibacterial agent.

[0032] Specifically, the antibacterial rate is ≥99% (GB / T 20944.3 standard): This antibacterial rate indicates that the scarf has a strong ability to kill or inhibit bacteria and fungi, effectively protecting the user's health and reducing the risk of cross-infection. The antibacterial rate remains ≥90% after 50 washes: This parameter indicates that the scarf has good wash resistance. Even after multiple washes, the scarf can still maintain a high antibacterial effect, extending its service life.

[0033] Breathability ≥180mm / s: Breathability reflects the scarf's breathability. A breathability of ≥180mm / s ensures good breathability, improves wearing comfort, and is especially suitable for prolonged wear.

[0034] Drape factor ≤35%: The drape factor is an indicator that reflects the drape performance of a fabric. A drape factor of ≤35% allows the scarf to drape naturally, providing a comfortable fit and enhancing its appearance and texture.

[0035] Antibacterial treatment: The silk embroidery thread is loaded with silver zeolite antibacterial agent through an impregnation method. The impregnation process is carried out in a clean bench to ensure a sterile environment and avoid affecting the antibacterial properties of the agent.

[0036] Silver-loaded zeolite antibacterial agent addition amount: The antibacterial agent is added at 8% to 12% of the weight of silk. The silver-loaded zeolite antibacterial agent provides long-lasting antibacterial protection and effectively kills bacteria and fungi; at the same time, the decorative thread increases the beauty and added value of the scarf, meeting consumers' demand for high-quality textiles.

[0037] Built-in antibacterial fiber weave: An antibacterial fiber weave is built into the edge of the scarf to enhance the antibacterial effect of the edge and provide comprehensive antibacterial protection.

[0038] Medical-grade antibacterial silicone edge sealing strip: Utilizing medical-grade antibacterial silicone edge sealing strips, this product not only boasts excellent antibacterial properties but also enhances the scarf's durability and aesthetics. The silicone material offers excellent elasticity and flexibility, adapting to various complex shapes and curved surfaces to ensure a tight and reliable seal.

[0039] Triclosan antibacterial agent dosage: The silicone edge sealing strip contains 3% to 5% triclosan antibacterial agent. Triclosan is a highly effective broad-spectrum antibacterial disinfectant that can effectively kill bacteria and fungi; an addition of 3% to 5% ensures good antibacterial properties at the edges while avoiding potential harm to the human body from excessive use.

[0040] Example 1: Optimization of cashmere pretreatment process 1. Raw material screening: High-quality cashmere with a fiber fineness ≤18.5μm was screened using an optical fiber diameter analyzer (OFDA2000). The following requirements were also specified: Fiber length ≥ 32 mm; scale density ≥ 800 scales / mm; cortex layer percentage ≥ 85% Technical effect: Ensures effective penetration and binding of subsequent antibacterial agents. 2. Ultrasonic cleaning: Cleaning tank parameters: Cleaning solution formula optimization: 3. Low-temperature drying: A stepped drying process is adopted: Example 2: Key Controls in the Preparation of Antibacterial Fibers 1. Nano-silver / chitosan composite system: Preparation of nano-silver: • Silver particles with a diameter of 30-50 nm were obtained using laser ablation. • Surface-modified sodium citrate (concentration 0.1 mmol / L) Composite process: Wet spinning parameters: Example 3: Post-finishing process verification • Application of antibacterial finishing agent: Roll-out process curve: Baking temperature optimization experiment: Ultimately, 115℃ was chosen as the optimal parameter. Example 4: Finished Product Performance Testing 1. Antibacterial performance verification: • Test method: GB / T20944.3-2008 Oscillation method • Experimental data: 1. Excellent initial antibacterial effect The initial antibacterial rate was >99.8%, significantly higher than the industry standard (GB / T 20944.3 requires ≥90%), proving the effective synergistic effect of the nano-silver / chitosan composite antibacterial agent and the quaternary ammonium salt finishing agent. At the same time, the plasma pretreatment improved the fiber's ability to bind to the antibacterial agent.

[0041] 2. Significant water wash stability After 50 washes, the antibacterial rate remains >95%, and after 100 washes, it is >89%, indicating: This demonstrates the technical advantage of antibacterial agents achieving dual fixation through fiber embedding and surface self-assembly networks, while far exceeding that of conventional products (typically <70% after 20 washes).

[0042] • Comparison of physical properties: 1. Improved comfort Air permeability increased by 28% due to yarn gradient structure and reasonable areal density; The drape factor decreased by 21%: sericin fibroin auxiliaries maintained the fiber's suppleness; Comprehensive evidence shows that the antibacterial treatment did not sacrifice the natural feel of cashmere.

[0043] 2. Breakthrough in durability Pilling grade 4-5 (better than the standard grade 3), explanation: The yarn structure strength is optimized by a dual warp feeding system, and nano-self-assembly finishing reduces frictional damage to the fiber surface.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing an antibacterial cashmere scarf, characterized in that, Includes the following steps: S1. Pre-treatment of high-quality cashmere: Select cashmere raw materials with fiber fineness ≤18.5μm, and perform grading and impurity removal, ultrasonic cleaning and low-temperature drying; S2, Antibacterial fiber blend: Pretreated cashmere is blended with 15% to 30% by weight of antibacterial modified viscose fiber, wherein the antibacterial fiber contains nano-silver and chitosan composite antibacterial agent; S3, Spinning: 28-32Nm blended yarn is spun using Siro spinning process, and the yarn twist is controlled at 680-720 twists / meter; S4. Weaving: Weaving is done using a double-sided jacquard loom, with the areal density controlled at 180-220g / m², and the weave structure is a composite structure of 2 / 2 twill and plain weave. S5. Antibacterial finishing: Apply antibacterial finishing agent containing quaternary ammonium salt compounds by padding method, baking temperature 110-120℃, time 3-5 minutes; S6. Finished product inspection: including antibacterial performance testing, color fastness testing and dimensional stability testing.

2. The method for preparing an antibacterial cashmere scarf according to claim 1, characterized in that: The ultrasonic cleaning described in S1 uses a cleaning solution with a frequency of 40kHz and a temperature of 35-40℃, which contains 0.5% tea polyphenol extract and 1.5% neutral detergent.

3. The method for preparing an antibacterial cashmere scarf according to claim 1, characterized in that: The preparation method of the antibacterial modified viscose fiber in S2 includes: mixing viscose spinning solution with nano-silver particles with a particle size of 30-50nm and chitosan with a deacetylation degree of ≥85% at a mass ratio of 100:1.5:3, and then spinning by wet spinning.

4. The method for preparing an antibacterial cashmere scarf according to claim 1, characterized in that: The spinning of the blended yarn in S3 also includes adding 0.5% to 1% sericin protein auxiliaries, which can improve the cohesion between fibers and maintain natural softness.

5. The method for preparing an antibacterial cashmere scarf according to claim 1, characterized in that: The S4 weaving process employs a double warp feeding system, with ground warp tension of 8-10 cN, pattern warp tension of 12-15 cN, and weft density set at 22-24 threads / cm.

6. The method for preparing an antibacterial cashmere scarf according to claim 1, characterized in that: The antibacterial finishing agent in S5 comprises the following components: 3%–5% dioctadecyl dimethyl ammonium chloride, 2%–3% nano zinc oxide, 4%–6% organosilicon softener, and the balance being deionized water.

7. The method for preparing an antibacterial cashmere scarf according to claim 1, characterized in that: After step S5, a finishing solution containing vitamin E microcapsules is applied by padding with a roll-on rate of 80%, followed by drying at 85°C.

8. A cashmere scarf with antibacterial properties, characterized in that, The method for preparing an antibacterial cashmere scarf according to any one of claims 1-7 is characterized in that: the antibacterial rate of the scarf is ≥99%, the antibacterial rate is still ≥90% after 50 washes, the air permeability is ≥180mm / s, and the drape coefficient is ≤35%.

9. A cashmere scarf with antibacterial properties according to claim 8, characterized in that: The scarf has antibacterial treated silk embroidery decorative thread on its surface. The silk thread is loaded with silver-loaded zeolite antibacterial agent by impregnation, and the amount added is 8% to 12% of the weight of the silk.

10. A cashmere scarf with antibacterial properties according to claim 9, characterized in that: The scarf's edge features a special binding structure, including an internal antibacterial fiber weave and a medical-grade antibacterial silicone sealing strip. The silicone sealing strip contains 3% to 5% triclosan antibacterial agent.

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