A quick-drying antibacterial sock based on composite fibers and its preparation method

Abstract

This invention belongs to the field of antibacterial fabric technology, and relates to a quick-drying antibacterial sock based on composite fibers and its preparation method. This invention uses a composite formula of organic cotton, recycled Coolmax, recycled nylon, and spandex, combined with a three-dimensional moisture-wicking network constructed from four-groove, irregularly shaped Coolmax fibers and a zoned weaving process to achieve a highly efficient cycle of moisture absorption, diffusion, and evaporation. Through precise functional zone design, the material ratios and weaving processes of each part are adapted to the usage needs of different areas of the foot. The spiral weaving and gradient pressure design at the sock cuff avoids marks and slippage, the 3D three-dimensional fit structure adapts to different foot shapes, and the spandex core-spun yarn process ensures elastic recovery without excessive restraint. The gradient distribution and thickening of recycled nylon in key stress areas, combined with upgraded zoned weaving technology and reinforced sewing processes in key areas, significantly improves the product's abrasion resistance and structural stability.

Description

Technical Field

[0001] This invention belongs to the field of antibacterial fabric technology, specifically relating to a quick-drying antibacterial sock based on composite fibers and its preparation method. Background Technology

[0002] As a garment worn close to the skin, socks are closely related to human health in terms of comfort and functionality. With the increasing health awareness of consumers and the growing demand for sports, socks with quick-drying and antibacterial functions have become the mainstream market demand. Quick-drying function can quickly wick away sweat from the feet and keep them dry, while antibacterial function can inhibit the growth of bacteria and fungi, reducing odor and the risk of skin infections. Therefore, the research and optimization of quick-drying and antibacterial socks has become a research hotspot in the textile and apparel industry.

[0003] Currently, significant progress has been made both domestically and internationally in the field of quick-drying antibacterial socks, resulting in diverse technical solutions and material application systems. In the application of antibacterial and smart technologies, the United States uses Polartec® Delta antibacterial fabric to manufacture socks, achieving a moisture permeability of up to 9500 g / (m²). 2 •d), with an antibacterial rate of over 95% against Staphylococcus aureus, balancing moisture permeability and antibacterial properties; Switzerland has developed smart socks with embedded micro-humidity sensors, capable of real-time monitoring of foot humidity and transmitting data via Bluetooth, achieving intelligent monitoring of wearing status; Japan has developed biomimetic antibacterial technology, such as using chitosan fibers to make socks, achieving an antibacterial rate of up to 99%, and the material is biodegradable, meeting environmental protection requirements. In the field of environmentally friendly materials, Italian brands use recycled nylon (ECONYL®) to make socks, reducing carbon emissions by 50% compared to traditional processes, significantly improving the product's environmental friendliness; Germany uses seaweed fiber blending technology, giving the socks both natural antibacterial properties (antibacterial rate against Escherichia coli ≥90%) and quick-drying properties (moisture permeability 12000g / (m²)). 2 •d)) Dual functions, achieving synergy between environmental protection and functionality.

[0004] Although existing technologies have achieved a preliminary combination of quick-drying and antibacterial functions, analysis of the current research status at home and abroad reveals that there are still many shortcomings in the current quick-drying antibacterial sock products and manufacturing technologies that urgently need to be addressed, which limit the improvement of product quality and the expansion of market applications: Insufficient antibacterial durability: The antibacterial rate of existing nano antibacterial socks decreases significantly after 50 washes. For example, the antibacterial rate of some products against Staphylococcus aureus drops from over 99% to 88%, and the antibacterial rate against Candida albicans drops to 84.2%, which is difficult to meet the needs of long-term use. In addition, the antibacterial ingredients have low binding strength to the fibers and are easy to fall off during washing.

[0005] There are gaps in environmental performance: the proportion of bio-based materials in domestic products is generally less than 30%, while the proportion of bio-based materials in advanced international products has reached 60%. The application of environmentally friendly materials needs to be improved, and some products use chlorine bleach and non-environmentally friendly antibacterial agents, which pose a risk of harmful substance residues.

[0006] Poor functional synergy: Existing products often focus on optimizing a single function. While some products combine quick-drying and antibacterial properties, they fail to achieve a precise match in performance. For example, some products with excellent antibacterial properties lack sufficient moisture permeability and quick-drying capacity (moisture permeability is only 10000g / (m³)). 2 •h)), or while they have excellent quick-drying properties, their antibacterial range is narrow, making it difficult to fully meet consumers' demand for high-quality socks; moreover, the functional zoning design is vague, and the instep and sole use the same material ratio, resulting in a failure to balance breathability and abrasion resistance.

[0007] The integration of smart technology and quick-drying antibacterial function is low: existing smart socks mostly focus on environmental monitoring and have not achieved dynamic coordinated control of monitoring data and antibacterial and quick-drying functions. Furthermore, the embedding of smart components can easily affect wearing comfort. At the same time, most products do not have reserved structures for smart upgrades and cannot be adapted to subsequent smart modifications.

[0008] Insufficient abrasion resistance: The soles of existing products generally only withstand about 3,000 abrasion cycles, which cannot meet the needs of high-frequency use scenarios such as outdoor sports and military / police duties, resulting in a short service life.

[0009] In summary, existing quick-drying antibacterial socks have significant shortcomings in terms of antibacterial durability, application of environmentally friendly materials, functional synergy, intelligent integration, and abrasion resistance. There is an urgent need to develop a quick-drying antibacterial sock that can take into account long-lasting antibacterial effect, high-efficiency quick-drying, environmental performance, wearing comfort, and potential intelligent adaptation, in order to solve the defects of existing technologies and promote the upgrading and iteration of quick-drying antibacterial sock products. Summary of the Invention

[0010] The purpose of this invention is to overcome the shortcomings of the prior art and provide a quick-drying antibacterial sock based on composite fibers and its preparation method, which enables the sock to have long-lasting antibacterial effect, high efficiency in quick drying, environmental protection and comfort, and potential intelligent adaptability, meeting the needs of multiple scenarios such as daily wear, outdoor sports, and military and police duty.

[0011] To achieve the above objectives, the present invention provides the following technical solution: On one hand, this invention provides a quick-drying antibacterial sock based on composite fibers. The sock is made from a composite fiber system of organic cotton, recycled Coolmax, recycled nylon, and spandex, and is designed according to functional zones. The raw material proportions for each functional zone are as follows, expressed as a percentage by weight: Foot area: 35%-40% organic cotton, 38%-43% recycled Coolmax, 16%-20% recycled nylon, 2%-4% spandex, focusing on breathability and quick-drying; Foot area: Organic cotton 25%-29%, recycled Coolmax 42%-52%, recycled nylon 21%-27%, spandex 2%-7%, focusing on abrasion resistance and moisture wicking; The foot area also includes the toe area and the heel area, wherein the toe area and the heel area contain 23%-29% recycled nylon, 40%-48% recycled Coolmax, and 2%-7% spandex; Sock cuff: 28%-32% organic cotton, 49%-56% recycled Coolmax, 14%-16% recycled nylon, 2%-7% spandex, with an emphasis on moisture wicking and stiffness; The cuff area is made of 29%-32% organic cotton, 48%-53% recycled Coolmax, 16%-17% recycled nylon, and 2%-8% spandex, with an emphasis on a snug fit and anti-slip properties.

[0012] Specifically, the quick-drying antibacterial socks have a pre-drilled groove for embedding a miniature humidity sensor in the center of the sole. The groove measures 10mm × 5mm × 2mm and is encapsulated with a modified polyurethane elastic breathable film. This modified polyurethane elastic breathable film uses environmentally friendly water-based polyurethane as a base, with the addition of 5%~8% polyether polyol and 3%~5% nano-silica. It has an elongation at break ≥500%, a recovery rate ≥95%, an air permeability ≥3000g / (m²・24h), a thickness of 0.1~0.2mm, and no organic solvent residue. It meets the Class A standard of GB18401-2010, providing a foundation for subsequent intelligent monitoring.

[0013] Specifically, the organic cotton has a count of 16S; the recycled Coolmax has an irregular cross-section with a fineness of 150D / 36F or 100D / 48F; the recycled nylon has a fineness of 70D and a breaking strength of 6.5cN / dtex; the spandex has a fineness of 20D and a breaking elongation of 800%; and the proportion of bio-based materials is ≥55%.

[0014] On the other hand, the present invention provides a method for preparing quick-drying antibacterial socks as described above, comprising the following steps: Step 1, Raw material pretreatment: First, the organic cotton is pretreated with hydrogen peroxide for environmentally friendly bleaching to remove impurities and leave no harmful residues. Then, the moisture regain of the organic cotton, recycled Coolmax, recycled nylon, and spandex is adjusted evenly. Step 2: Knitting and forming of each functional area: Set the yarn feeding mechanism parameters according to the raw material ratio of each functional area. The instep area adopts a thin mesh knitting process, the sole area adopts a thickened plain knitting or double-layer thickened knitting process, the sock cuff adopts a longitudinal moisture-wicking channel knitting process, and the sock opening adopts a spiral knitting or gradient pressure knitting process to obtain the fabric blank of each functional area. Step 3, Bio-based Antibacterial Finishing: The fabric blanks of each functional area are subjected to antibacterial treatment using a padding-pre-drying-baking process; Step 4, Cutting: Cut the fabric blanks of each functional area after antibacterial treatment according to the standard to obtain the semi-finished fabric of each functional area. Step 5, Sewing: Sew the semi-finished fabrics of each functional area to obtain the raw socks; Step 6, finishing: The raw socks are subjected to low-temperature ironing and vacuum drying in sequence to obtain the desired quick-drying antibacterial socks.

[0015] Specifically, in step 1, organic cotton, recycled Coolmax, recycled nylon, and spandex are pre-conditioned for 24 hours at a temperature of 25°C and a relative humidity of 65% to ensure uniform moisture regain and stable yarn tension during subsequent knitting.

[0016] Specifically, in step 2, an energy-saving 14-needle single-system computerized flat knitting machine is used. The parameters of the yarn feeding mechanism are set according to the proportions of each part, and the yarn tension is kept constant at 8cN. When knitting the instep area, the knitting density is 26-28 stitches / 10cm to increase the ventilation channels. When knitting the sole area, the knitting density is 32-35 stitches / 10cm to improve abrasion resistance. When knitting the sock cuff area, the spacing of the moisture-wicking grooves is set to 0.6-0.8cm to enhance longitudinal moisture wicking. When knitting the sock opening area, the spandex stretch ratio is controlled to 2.5-3.2 times to avoid marks and slippage.

[0017] Specifically, in step 3, the antibacterial finishing agent used in the antibacterial treatment includes one of chitosan quaternary ammonium salt antibacterial agent and composite chitosan quaternary ammonium salt-silver ion antibacterial agent, with a concentration of 50-150 g / L, preferably 80-100 g / L; wherein, in the composite chitosan quaternary ammonium salt-silver ion antibacterial agent, the chitosan quaternary ammonium salt accounts for 70% and the silver salt accounts for 30% by molar percentage.

[0018] Specifically, in step 3, the process parameters for the padding-pre-drying-baking process are as follows: padding temperature 40-45℃, liquor ratio 1:20, roll residue 60-80%; pre-drying temperature 70-90℃, time 2-3 min; baking temperature 130-135℃, time 3-5 min, to enhance the binding strength between antibacterial components and fibers.

[0019] Specifically, in step 4, a precise cutting pattern is drawn according to the GB / T 1335 series size standard, and laser cutting technology is used to cut key parts such as the toe and heel of the sock. The cut edges are free of burrs and rough edges, and the size deviation of the cut pieces is ≤0.5cm.

[0020] Specifically, in step 5, recycled polyester sewing thread is used to sew the semi-finished fabric of each functional area. The toe and heel are sewn with four-thread overlock stitch with a stitch density of 12-14 stitches / 3cm. For high abrasion-resistant models, an additional reinforcing stitch can be added. The cuff is sewn with elastic binding to ensure a good fit.

[0021] Specifically, in step 6, the parameters for low-temperature ironing are: temperature 50-80℃, time 10-30s, and environmentally friendly ironing agent is used to avoid harmful substance residues; the parameters for vacuum drying are: temperature 60-90℃, time 0.5-2h, to ensure uniform drying of the product and avoid uneven fabric shrinkage caused by conventional drying.

[0022] Specifically, the quick-drying antibacterial socks produced meet the following core performance indicators: Moisture absorption and quick-drying performance: water droplet diffusion time < 1s, water absorption rate ≥ 258%, water evaporation rate ≥ 0.26g / h, moisture permeability ≥ 13400g / (m³) 2 •h); Antibacterial properties: After 100 washes, the inhibition rate of Staphylococcus aureus is ≥90%, the inhibition rate of Escherichia coli is ≥99%, and the inhibition rate of Candida albicans is ≥95%; the long-lasting antibacterial version has an inhibition rate of Staphylococcus aureus of ≥92% after 150 washes. Abrasion resistance: The sole area can withstand ≥5000 abrasion cycles; Elasticity properties: longitudinal elongation at the cuff ≥200%, recovery rate ≥95%; Environmental performance: Bio-based materials account for ≥55%, with no harmful substance residues, and meets the Class A standard of GB 18401-2010 "National Basic Safety Technical Specifications for Textile Products".

[0023] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: Excellent moisture absorption and quick-drying performance, far exceeding industry standards: This invention innovatively adopts a composite formula of organic cotton, recycled Coolmax, recycled nylon, and spandex, combined with a three-dimensional moisture-wicking network constructed from four-groove irregularly shaped Coolmax fibers and a zoned weaving process, to achieve a highly efficient cycle of moisture absorption-diffusion-evaporation. Tests show that the drip diffusion time is 0.5-0.9s (industry average 3s), the water absorption rate is 258%-266% (industry average 200%), the moisture evaporation rate is 0.26-0.32g / h (industry average 0.25g / h), and the moisture permeability is 13400-14200g / (m²).2 •h)(Industry average 13000g / (m 2 •h)), its moisture-wicking and quick-drying performance is significantly better than similar products in the industry, and it can quickly keep feet dry.

[0024] Strong antibacterial durability and long-lasting protective effect: Through a multi-functional zoned bio-based antibacterial treatment combined with a composite chitosan quaternary ammonium salt-silver ion antibacterial agent, the binding strength of antibacterial components to fibers is increased by 20%, achieving dual functions of antibacterial and deodorizing. After 100 washes, the antibacterial rate against Escherichia coli is 99% and against Candida albicans is 95%, both meeting the standard requirements. Only the antibacterial rate against Staphylococcus aureus drops slightly to 90%, still maintaining a high level of protection. The long-lasting antibacterial version can still maintain a high antibacterial rate after 150 washes. Compared with the industry average of a significant decrease in antibacterial rate after 50 washes, the antibacterial durability of this invention is significantly improved, which can inhibit the growth of bacteria and fungi on the feet for a long time and reduce odor.

[0025] Comfortable and form-fitting, adaptable to diverse needs: Through precise functional zoning design, the material ratio and weaving process of each part are adapted to the usage needs of different areas of the foot; the spiral weaving and gradient pressure design of the sock cuff avoids marks and slippage, the 3D three-dimensional fit structure adapts to different foot shapes, and the spandex core-spun yarn process ensures elastic recovery without excessive restriction; the skin-friendly properties of organic cotton and details such as laser cutting and tearable washing labels further enhance wearing comfort, making it suitable for various scenarios such as daily wear, sports, and military and police duties.

[0026] Durable and stable structure with long service life: The gradient distribution and thickening of recycled nylon in key stress areas, combined with upgraded zoned weaving technology and reinforced sewing process in key areas, significantly improves the product's abrasion resistance and structural stability; the foot area can withstand more than 5,000 abrasion cycles, far exceeding the industry average of 3,000 cycles; the spandex core-spun yarn process avoids excessive stretching and deformation of the product, ensuring dimensional stability after long-term use and extending the product's service life.

[0027] With outstanding environmental performance, it meets green requirements: the proportion of bio-based materials has increased to over 55%, compared to less than 30% in existing products, resulting in a significant improvement in environmental performance; it uses environmentally friendly raw materials such as organic cotton, recycled Coolmax, and recycled nylon, and environmentally friendly processes such as hydrogen peroxide bleaching, environmentally friendly antibacterial finishing, and recycled sewing thread, leaving no harmful residues and meeting the GB18401-2010 Class A standard, aligning with the development trend of green production and consumption.

[0028] It has strong intelligent adaptability and upgrade potential: the reserved micro humidity sensor embedding structure provides a foundation for subsequent intelligent monitoring of foot humidity and dynamic function control, solves the problem of insufficient intelligent integration of existing technologies, and can be adapted to subsequent intelligent upgrades and transformations, thereby enhancing the technological added value of the product.

[0029] The process is mature and controllable, suitable for large-scale production: The materials used in this invention are all commercially available conventional environmentally friendly materials, and the weaving, antibacterial finishing, sewing and other processes are mature and easy to control; the upgraded zone weaving technology improves product performance and production efficiency at the same time, and each performance indicator can be accurately controlled through standardized testing methods, resulting in stable product quality and suitability for large-scale industrial production. Attached Figure Description

[0030] The accompanying drawings are incorporated in and form part of this specification, and together with the description serve to explain the principles of the invention.

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the functional zones of the conventional composite fiber quick-drying antibacterial socks in Example 1; Figure 2 This refers to the thickened plain weave foot area in Example 2. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0034] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] See Figure 1 and 2 As shown, this invention provides a quick-drying antibacterial sock based on composite fibers. The sock is made from a composite fiber system of organic cotton, recycled Coolmax, recycled nylon, and spandex, and is designed with functional zones and uses a percentage-by-weight ratio for each functional zone. The raw material proportions for each functional zone are as follows: Foot area: 35%-40% organic cotton, 38%-43% recycled Coolmax, 16%-20% recycled nylon, 2%-4% spandex, focusing on breathability and quick-drying; Foot area: Organic cotton 25%-29%, recycled Coolmax 42%-52%, recycled nylon 21%-27%, spandex 2%-7%, focusing on abrasion resistance and moisture wicking; The foot area also includes the toe area and the heel area, wherein the toe area and the heel area contain 23%-29% recycled nylon, 40%-48% recycled Coolmax, and 2%-7% spandex; Sock cuff: 28%-32% organic cotton, 49%-56% recycled Coolmax, 14%-16% recycled nylon, 2%-7% spandex, with an emphasis on moisture wicking and stiffness; The cuff area is made of 29%-32% organic cotton, 48%-53% recycled Coolmax, 16%-17% recycled nylon, and 2%-8% spandex, with an emphasis on a snug fit and anti-slip properties.

[0036] Specifically, the quick-drying antibacterial socks have a pre-drilled groove for embedding a miniature humidity sensor in the center of the sole. The groove measures 10mm × 5mm × 2mm and is encapsulated with a modified polyurethane elastic breathable film. This modified polyurethane elastic breathable film uses environmentally friendly water-based polyurethane as a base, with the addition of 5%~8% polyether polyol and 3%~5% nano-silica. It has an elongation at break ≥500%, a recovery rate ≥95%, an air permeability ≥3000g / (m²・24h), a thickness of 0.1~0.2mm, and no organic solvent residue. It meets the Class A standard of GB18401-2010, providing a foundation for subsequent intelligent monitoring.

[0037] Specifically, the organic cotton has a count of 16S; the recycled Coolmax has an irregular cross-section with a fineness of 150D / 36F or 100D / 48F; the recycled nylon has a fineness of 70D and a breaking strength of 6.5cN / dtex; the spandex has a fineness of 20D and a breaking elongation of 800%; and the proportion of bio-based materials is ≥55%.

[0038] On the other hand, the present invention provides a method for preparing quick-drying antibacterial socks as described above, comprising the following steps: Step 1, Raw material pretreatment: First, the organic cotton is pretreated with hydrogen peroxide for environmentally friendly bleaching to remove impurities and leave no harmful residues. Then, the moisture regain of the organic cotton, recycled Coolmax, recycled nylon, and spandex is adjusted evenly. Step 2: Knitting and forming of each functional area: Set the yarn feeding mechanism parameters according to the raw material ratio of each functional area. The instep area adopts a thin mesh knitting process, the sole area adopts a thickened plain knitting or double-layer thickened knitting process, the sock cuff adopts a longitudinal moisture-wicking channel knitting process, and the sock opening adopts a spiral knitting or gradient pressure knitting process to obtain the fabric blank of each functional area. Step 3, Bio-based Antibacterial Finishing: The fabric blanks of each functional area are subjected to antibacterial treatment using a padding-pre-drying-baking process; Step 4, Cutting: Cut the fabric blanks of each functional area after antibacterial treatment according to the standard to obtain the semi-finished fabric of each functional area. Step 5, Sewing: Sew the semi-finished fabrics of each functional area to obtain the raw socks; Step 6, finishing: The raw socks are subjected to low-temperature ironing and vacuum drying in sequence to obtain the desired quick-drying antibacterial socks.

[0039] Specifically, in step 1, organic cotton, recycled Coolmax, recycled nylon, and spandex are pre-conditioned for 24 hours at a temperature of 25°C and a relative humidity of 65% to ensure uniform moisture regain and stable yarn tension during subsequent knitting.

[0040] Specifically, in step 2, an energy-saving 14-needle single-system computerized flat knitting machine is used. The parameters of the yarn feeding mechanism are set according to the proportions of each part, and the yarn tension is kept constant at 8cN. When knitting the instep area, the knitting density is 26-28 stitches / 10cm to increase the ventilation channels. When knitting the sole area, the knitting density is 32-35 stitches / 10cm to improve abrasion resistance. When knitting the sock cuff area, the spacing of the moisture-wicking grooves is set to 0.6-0.8cm to enhance longitudinal moisture wicking. When knitting the sock opening area, the spandex stretch ratio is controlled to 2.5-3.2 times to avoid marks and slippage.

[0041] Specifically, in step 3, the antibacterial finishing agent used in the antibacterial treatment includes one of chitosan quaternary ammonium salt antibacterial agent and composite chitosan quaternary ammonium salt-silver ion antibacterial agent, with a concentration of 50-150 g / L, preferably 80-100 g / L; wherein, in the composite chitosan quaternary ammonium salt-silver ion antibacterial agent, the chitosan quaternary ammonium salt accounts for 70% and the silver salt accounts for 30% by molar percentage.

[0042] Specifically, in step 3, the process parameters for the padding-pre-drying-baking process are as follows: padding temperature 40-45℃, liquor ratio 1:20, roll residue 60-80%; pre-drying temperature 70-90℃, time 2-3 min; baking temperature 130-135℃, time 3-5 min, to enhance the binding strength between antibacterial components and fibers.

[0043] Specifically, in step 4, a precise cutting pattern is drawn according to the GB / T 1335 series size standard, and laser cutting technology is used to cut key parts such as the toe and heel of the sock. The cut edges are free of burrs and rough edges, and the size deviation of the cut pieces is ≤0.5cm.

[0044] Specifically, in step 5, recycled polyester sewing thread is used to sew the semi-finished fabric of each functional area. The toe and heel are sewn with four-thread overlock stitch with a stitch density of 12-14 stitches / 3cm. For high abrasion-resistant models, an additional reinforcing stitch can be added. The cuff is sewn with elastic binding to ensure a good fit.

[0045] Specifically, in step 6, the parameters for low-temperature ironing are: temperature 50-80℃, time 10-30s, and environmentally friendly ironing agents are used to avoid harmful substance residues. The parameters for vacuum drying are: temperature 60-90℃, time 0.5-2h, to ensure uniform drying of the product and avoid uneven fabric shrinkage caused by conventional drying. To demonstrate the effectiveness of the present invention, the following embodiments and comparative examples are provided for verification. The testing standards are as follows: Moisture absorption and quick-drying property test: Refer to GB / T 21655.1-2023 "Evaluation of moisture absorption and quick-drying property of textiles - Part 1: Single combination test method"; Antimicrobial performance testing: in accordance with GB / T 20944.3-2008 "Evaluation of antimicrobial properties of textiles - Part 3: Vibration method"; Moisture permeability test: GB / T 12704.1-2009 "Textiles - Test methods for moisture permeability of fabrics - Part 1: Moisture absorption method" was adopted; Abrasion resistance testing: Refer to GB / T 21196.2-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics - Part 2: Determination of Specimen Breakage"; Safety performance testing: in accordance with Class A standards of GB 18401-2010 "National Basic Safety Technical Specifications for Textile Products".

[0046] Example 1: This embodiment provides a standard composite fiber quick-drying antibacterial sock: Raw material selection: organic cotton fiber (fineness 16S), recycled Coolmax polyester fiber (irregular cross section, fineness 150D / 36F), recycled nylon (fineness 70D), spandex (fineness 20D); the bio-based antibacterial finishing agent is chitosan quaternary ammonium salt antibacterial agent (effective content 30%).

[0047] Material proportions: Foot area: 40% organic cotton + 38% recycled Coolmax + 20% recycled nylon + 2% spandex; Foot area: 29% organic cotton + 47% recycled Coolmax + 21% recycled nylon + 3% spandex; The foot area also includes the toe area and the heel area, which contain 29% recycled nylon, 40% recycled Coolmax, 2% spandex, and 29% organic cotton. Cuff area: 32% organic cotton + 48% recycled Coolmax + 17% recycled nylon + 3% spandex; Sock cuff: 32% organic cotton + 51% recycled Coolmax + 14% recycled nylon + 3% spandex.

[0048] The specific preparation process is as follows: Raw material pretreatment: After being bleached with hydrogen peroxide, the organic cotton fibers are pre-conditioned with other fibers at 25°C and 65% humidity for 24 hours. Knitting process: 14-gauge single-system computerized flat knitting machine is used, with a knitting density of 28 stitches / 10cm for the instep, 32 stitches / 10cm for the sole, a spandex stretch ratio of 3.2 times for the cuff, and a moisture-wicking groove spacing of 0.8cm for the leg. Antibacterial finishing: antibacterial agent concentration 80g / L, padding temperature 40℃, pre-drying at 80℃ / 2min, baking at 130℃ / 3min; Cutting: Laser cutting technology is used to cut adult men's size 42 socks; Sewing: 402 type recycled polyester sewing thread is used. The toe and heel of the socks are sewn with four threads and a stitch length of 12 stitches / 3cm. Post-processing: Ironing temperature 80℃ / 30s, vacuum drying 60℃ / 2h, to obtain the desired standard composite fiber quick-drying antibacterial socks.

[0049] The performance of the prepared conventional composite fiber quick-drying antibacterial socks was tested, and the results are as follows: water droplet diffusion time 0.8s, water absorption rate 266%, water evaporation rate 0.27g / h, and moisture permeability 13600g / (m²). 2 •h); After 100 washes, the inhibition rate of Staphylococcus aureus is 90%, the inhibition rate of Escherichia coli is 99%, and the inhibition rate of Candida albicans is 95%; the soles are durable for 5000 abrasion cycles; and the proportion of bio-based materials is 56%.

[0050] Example 2: This embodiment provides a reinforced quick-drying composite fiber quick-drying antibacterial sock: Raw material selection: organic cotton fiber (fineness 16S), recycled Coolmax polyester fiber (ultra-fine denier profile, fineness 100D / 48F), recycled nylon (fineness 70D), spandex (fineness 20D); the bio-based antibacterial finishing agent is chitosan quaternary ammonium salt antibacterial agent (effective content 30%).

[0051] Material proportions: Foot area: 35% organic cotton + 43% recycled Coolmax + 20% recycled nylon + 2% spandex; Foot area: 25% organic cotton + 52% recycled Coolmax + 21% recycled nylon + 2% spandex; the foot area also includes the toe and heel areas, where the toe and heel areas contain 23% recycled nylon, 48% recycled Coolmax, 2% spandex, and 27% organic cotton; Cuff area: 29% organic cotton + 53% recycled Coolmax + 16% recycled nylon + 2% spandex; Sock cuff: 28% organic cotton + 56% recycled Coolmax + 14% recycled nylon + 2% spandex.

[0052] The specific preparation process is as follows: The raw material pretreatment is the same as in Example 1; Knitting: the instep knitting density is 26 stitches / 10cm, the sole knitting density is 32 stitches / 10cm, the spandex stretch ratio at the cuff is 3.0 times, and the moisture-wicking groove spacing at the leg is 0.6cm. Antibacterial finishing: antibacterial agent concentration 90g / L, padding temperature 45℃, pre-drying at 80℃ / 2min, baking at 130℃ / 4min; Cutting and sewing are the same as in Example 1; Post-treatment: Ironing temperature 50℃ / 20s, vacuum drying 90℃ / 1.5h, to obtain the desired reinforced quick-drying composite fiber quick-drying antibacterial socks.

[0053] The performance of the prepared reinforced quick-drying composite fiber quick-drying antibacterial socks was tested, and the results are as follows: water droplet diffusion time 0.5s, water absorption rate 258%, water evaporation rate 0.32g / h, and moisture permeability 14200g / (m²). 2 •h); After 100 washes, the inhibition rate of Staphylococcus aureus is 91%, the inhibition rate of Escherichia coli is 99%, and the inhibition rate of Candida albicans is 96%; the soles are durable for 5000 abrasion cycles; and the proportion of bio-based materials is 57%.

[0054] Example 3: This embodiment provides a high abrasion-resistant composite fiber quick-drying antibacterial sock: Raw material selection: organic cotton fiber (fineness 16S), recycled Coolmax polyester fiber (irregular cross section, fineness 150D / 36F), high-strength recycled nylon (fineness 70D, breaking strength 6.5cN / dtex), spandex (fineness 20D); the bio-based antibacterial finishing agent is chitosan quaternary ammonium salt antibacterial agent (effective content 30%).

[0055] Material proportions: Foot area: 40% organic cotton + 35% recycled Coolmax + 23% high-strength recycled nylon + 2% spandex; Foot area: 28% organic cotton + 42% recycled Coolmax + 27% high-strength recycled nylon + 3% spandex; the foot area also includes the toe and heel areas, where the toe and heel areas contain 25% recycled nylon, 45% recycled Coolmax, 2% spandex, and 28% organic cotton; Cuff area: 32% organic cotton + 48% recycled Coolmax + 17% high-strength recycled nylon + 3% spandex; Sock cuff: 30% organic cotton + 51% recycled Coolmax + 16% high-strength recycled nylon + 3% spandex.

[0056] The specific preparation process is as follows: The raw material pretreatment is the same as in Example 1; Knitting: The sole area uses a double-layer thickened knitting process with a knitting density of 35 stitches / 10cm, and the rest is the same as in Example 1; Antibacterial finishing: Antibacterial agent concentration 100g / L, padding temperature 43℃, pre-drying at 80℃ / 2min, baking at 135℃ / 5min; Cutting is the same as in Example 1; Sewing: An additional reinforcing seam is added to the toe and heel of the socks, with a stitch length of 14 stitches / 3cm; Post-treatment: Ironing temperature 70℃ / 10s, vacuum drying 80℃ / 0.5h, to obtain the desired high abrasion-resistant composite fiber quick-drying antibacterial socks.

[0057] The performance of the prepared high abrasion-resistant composite fiber quick-drying antibacterial socks was tested, and the results are as follows: water diffusion time 0.9s, water absorption rate 260%, water evaporation rate 0.26g / h, moisture permeability 13400g / (㎡・h); abrasion resistance of the sole 6000 times; after 100 washes, the antibacterial rate of each bacterial species is the same as that in Example 1; bio-based material accounts for 55%.

[0058] Example 4: This embodiment provides a high-elasticity, comfortable composite fiber quick-drying antibacterial sock: Raw material selection: organic cotton fiber (fineness 16S), recycled Coolmax polyester fiber (irregular cross section, fineness 150D / 36F), recycled nylon (fineness 70D), high elastic spandex (fineness 20D, breaking elongation 800%); the bio-based antibacterial finishing agent is chitosan quaternary ammonium salt antibacterial agent (effective content 30%).

[0059] Material proportions: Foot area: 38% organic cotton + 38% recycled Coolmax + 20% recycled nylon + 4% high-elasticity spandex; Foot area: 28% organic cotton + 45% recycled Coolmax + 20% recycled nylon + 7% high-elasticity spandex; the foot area also includes the toe and heel areas, where the toe and heel areas consist of 25% recycled nylon, 40% recycled Coolmax, 7% spandex, and 28% organic cotton; Cuff area: 30% organic cotton + 46% recycled Coolmax + 16% recycled nylon + 8% high-elasticity spandex; Sock cuff: 30% organic cotton + 49% recycled Coolmax + 14% recycled nylon + 7% high-elasticity spandex.

[0060] The specific preparation process is as follows: The raw material pretreatment is the same as in Example 1; Knitting process: The spandex has a stretch ratio of 2.8 times, and the cuff uses a gradient pressure knitting process, with the stretch ratio gradually decreasing from 2.8 times to 2.5 times from bottom to top; Antibacterial finishing and cutting are the same as in Example 1; Sewing: Use 502 type recycled polyester sewing thread; After finishing as in Example 1, the desired high-elasticity, comfortable composite fiber quick-drying antibacterial socks were obtained.

[0061] The performance of the prepared high-elasticity, comfortable composite fiber quick-drying antibacterial socks was tested, and the results are as follows: water droplet diffusion time 0.8s, water absorption rate 265%, water evaporation rate 0.27g / h, and moisture permeability 13500g / (m²). 2 •h); the longitudinal stretch rate of the sock cuff is 220%, the recovery rate is 96%, and there are no marks when worn; after 100 washes, the antibacterial rate of each bacterial species is the same as in Example 1; the proportion of bio-based materials is 56%.

[0062] Example 5: This embodiment provides a long-lasting antibacterial composite fiber quick-drying antibacterial sock: Raw material selection: organic cotton fiber (fineness 16S), recycled Coolmax polyester fiber (irregular cross section, fineness 150D / 36F), recycled nylon (fineness 70D), spandex (fineness 20D); the bio-based antibacterial finishing agent is a composite chitosan quaternary ammonium salt-silver ion antibacterial agent (effective content 35%, chitosan quaternary ammonium salt accounts for 70%, and silver ions account for 30%).

[0063] Material ratio: Same as in Example 1.

[0064] The specific preparation process is as follows: The raw material pretreatment is the same as in Example 1; The knitting process is the same as in Example 1; Antibacterial finishing: Antibacterial agent concentration 100g / L, padding temperature 40℃, pre-drying at 80℃ / 2min, baking at 135℃ / 5min; Cutting, sewing, and finishing are the same as in Example 1 to obtain the desired long-lasting antibacterial composite fiber quick-drying antibacterial socks.

[0065] The performance of the prepared long-lasting antibacterial composite fiber quick-drying antibacterial socks was tested, and the results are as follows: water droplet diffusion time 0.8s, water absorption rate 266%, water evaporation rate 0.27g / h, and moisture permeability 13600g / (m²). 2•h); After 150 washes, the inhibition rate of Staphylococcus aureus was 92%, the inhibition rate of Escherichia coli was 99%, and the inhibition rate of Candida albicans was 96%; the proportion of bio-based materials was 56%.

[0066] Comparative example: This comparative example provides a conventional quick-drying antibacterial sock: Raw material selection: ordinary cotton fiber, conventional polyester fiber, nylon, spandex; antibacterial finishing agent selected is ordinary silver ion antibacterial agent (concentration 50g / L).

[0067] Material composition: 40% cotton fiber, 40% polyester fiber, 18% nylon, 2% spandex, no functional partition design.

[0068] The specific preparation process is as follows: The raw materials were not subjected to environmental pretreatment and were pre-conditioned for 12 hours. It uses a standard plain weave knitting technique with a knitting density of 30 stitches / 10cm; Antibacterial finishing: Padding temperature 40℃, baking 120℃ / 2min; Ordinary scissors are used for cutting, and ordinary polyester sewing thread is used for sewing; Post-treatment: conventional drying at 100℃ / 1h yields the existing conventional quick-drying antibacterial socks.

[0069] Performance tests were conducted on existing conventional quick-drying antibacterial socks. The results are as follows: water droplet diffusion time 3s, water absorption rate 200%, water evaporation rate 0.25g / h, and moisture permeability 13000g / (m²). 2 •h); After 50 washes, the inhibition rate of Staphylococcus aureus is 88%, the inhibition rate of Escherichia coli is 90%, and the inhibition rate of Candida albicans is 85%; the soles are durable for 3000 abrasion cycles; the proportion of bio-based materials is 20%, which does not meet the Class A standard of GB 18401-2010.

[0070] As can be seen from the comparison between the above embodiments and comparative examples, the present invention has the following advantages: Moisture absorption and quick-drying performance: The water diffusion time of this invention is shortened by 76.7% compared with existing products, the water absorption rate is increased by more than 30%, and the water evaporation rate is increased by 4%-28%; Antibacterial durability: The antibacterial rate of this invention remains above 90% after 100 water washes, while the antibacterial rate of existing products drops to below 88% after 50 water washes. Abrasion resistance: The abrasion resistance of the sole of this invention is 66.7%-100% higher than that of existing products; Environmental performance: The proportion of bio-based materials in this invention is more than 2.75 times that of existing products, and it meets Class A safety standards, while existing products only meet Class B standards.

[0071] Therefore, the quick-drying antibacterial socks of the present invention are significantly superior to existing conventional products in terms of moisture absorption and quick-drying performance, antibacterial durability, abrasion resistance, and environmental protection performance, thus meeting the needs of users.

[0072] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0073] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A quick-drying antibacterial sock based on composite fibers, characterized in that, The quick-drying antibacterial socks are made of a composite fiber system of organic cotton, recycled Coolmax, recycled nylon, and spandex. They are designed according to functional zones and the raw material composition of each functional zone is as follows, expressed as a percentage by weight: Foot area: Organic cotton 35%-40%, recycled Coolmax 38%-43%, recycled nylon 16%-20%, spandex 2%-4%; Foot area: Organic cotton 25%-29%, recycled Coolmax 42%-52%, recycled nylon 21%-27%, spandex 2%-7%; Sock cuff: Organic cotton 28%-32%, recycled Coolmax 49%-56%, recycled nylon 14%-16%, spandex 2%-7%; Cuff area: Organic cotton 29%-32%, recycled Coolmax 48%-53%, recycled nylon 16%-17%, spandex 2%-8%.

2. The quick-drying antibacterial socks according to claim 1, characterized in that, The quick-drying antibacterial socks have a pre-drilled groove for a miniature humidity sensor in the center of the sole, and the groove is encapsulated with a modified polyurethane elastic breathable film.

3. The quick-drying antibacterial socks according to claim 1, characterized in that, The organic cotton has a count of 16S; the recycled Coolmax has a cross-section with a fineness of 150D / 36F or 100D / 48F; the recycled nylon has a fineness of 70D and a breaking strength of 6.5cN / dtex; and the spandex has a fineness of 20D and a breaking elongation of 800%.

4. A method for preparing quick-drying antibacterial socks according to any one of claims 1-3, characterized in that, Includes the following steps: Step 1, Raw material pretreatment: First, the organic cotton is subjected to environmentally friendly bleaching pretreatment, and then the moisture regain of the organic cotton, recycled Coolmax, recycled nylon, and spandex is adjusted evenly. Step 2: Knitting and forming of each functional area: Set the yarn feeding mechanism parameters according to the raw material ratio of each functional area. The instep area adopts a thin mesh knitting process, the sole area adopts a thickened plain knitting or double-layer thickened knitting process, the sock cuff adopts a longitudinal moisture-wicking channel knitting process, and the sock opening adopts a spiral knitting or gradient pressure knitting process to obtain the fabric blank of each functional area. Step 3, Bio-based Antibacterial Finishing: The fabric blanks of each functional area are subjected to antibacterial treatment using a padding-pre-drying-baking process; Step 4, Cutting: Cut the fabric blanks of each functional area after antibacterial treatment according to the standard to obtain the semi-finished fabric of each functional area. Step 5, Sewing: Sew the semi-finished fabrics of each functional area to obtain the raw socks; Step 6, finishing: The raw socks are subjected to low-temperature ironing and vacuum drying in sequence to obtain the desired quick-drying antibacterial socks.

5. The method for preparing quick-drying antibacterial socks according to claim 4, characterized in that, In step 1, organic cotton, recycled Coolmax, recycled nylon, and spandex are pre-conditioned for 24 hours at a temperature of 25°C and a relative humidity of 65% to ensure uniform moisture regain.

6. The method for preparing quick-drying antibacterial socks according to claim 4, characterized in that, In step 2, when knitting the instep area, the knitting density is 26-28 stitches / 10cm; when knitting the sole area, the knitting density is 32-35 stitches / 10cm; when knitting the sock cuff area, the spacing of the moisture-wicking grooves is set to 0.6-0.8cm; when knitting the sock opening area, the spandex stretch ratio is controlled to 2.5-3.2 times.

7. The method for preparing quick-drying antibacterial socks according to claim 4, characterized in that, In step 3, the antibacterial finishing agent used in the antibacterial treatment includes one of chitosan quaternary ammonium salt antibacterial agent and composite chitosan quaternary ammonium salt-silver ion antibacterial agent, with a concentration of 50-150 g / L; wherein, in the composite chitosan quaternary ammonium salt-silver ion antibacterial agent, chitosan quaternary ammonium salt accounts for 70% and silver salt accounts for 30%.

8. The method for preparing quick-drying antibacterial socks according to claim 4, characterized in that, In step 3, the process parameters for the dip-pre-drying-baking process are as follows: dip temperature 40-45℃, liquor ratio 1:20, roll residue 60-80%; pre-drying temperature 70-90℃, time 2-3 min; baking temperature 130-135℃, time 3-5 min.

9. The method for preparing quick-drying antibacterial socks according to claim 4, characterized in that, In step 5, recycled polyester sewing thread is used to sew the semi-finished fabric of each functional area. The toe and heel are sewn with four-thread overlock stitch with a stitch density of 12-14 stitches / 3cm. The cuff is sewn with elastic binding.

10. The method for preparing quick-drying antibacterial socks according to claim 4, characterized in that, In step 6, the parameters for low-temperature ironing are: temperature 50-80℃, time 10-30s; the parameters for vacuum drying are: temperature 60-90℃, time 0.5-2h.

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