Cotton, modal and corn fiber blended fabric

Abstract

The invention relates to the technical field of fabric design, and particularly discloses a cotton, modal and corn fiber blended fabric which is prepared by blending the following components in percentage by weight: 38%-42% of cotton fibers, 28%-32% of modal fibers and 28%-32% of corn fibers. Warp yarn and weft yarn of the blended fabric are respectively 40% of JC long stapled cotton, 30% of modal and 30% of corn fiber 9.8 tex, and the blended fabric is made in a compact siro spinning mode. The fabric weave is five warp face satin weave, the warp density is 850 pieces / 10 cm, the weft density is 400 pieces / 10 cm, and the designed breadth is 254 cm. The corn fibers and the modal fibers are selected as core blending components and have the biodegradable characteristic, the corn fibers can be decomposed into harmless substances in the natural environment, the modal fibers are derived from natural raw materials and have no burden on the environment, and the proportion of the two fibers in the fabric is high, so that the whole fabric can be naturally degraded, and the fabric is comfortable to wear. And the environment cannot be polluted after being discarded.

Description

Technical Field

[0001] This invention relates to the field of fabric design technology, specifically to a blended fabric of cotton, modal, and corn fiber. Background Technology

[0002] Corn fiber, a synthetic fiber, is made from starch-based raw materials through fermentation, polymerization, and spinning. It possesses characteristics such as softness, smoothness, good strength, and moisture absorption and breathability. Processed products have a silky luster and a comfortable feel against the skin, while also exhibiting good drape, heat resistance, and UV protection. Furthermore, it is a naturally recyclable fiber, biodegradable, and its waste decomposes into harmless substances in the natural environment. It does not rely on petrochemical raw materials, has a short recycling cycle, and produces minimal pollution and low heat when burned, demonstrating significant advantages in both environmental protection and wearability. However, pure corn fiber still has room for improvement in strength and abrasion resistance, making it difficult to meet the durability requirements of fabrics on its own. It needs to be blended with other fibers to compensate for these shortcomings.

[0003] Modal fiber is a regenerated cellulose fiber that is harmless to the human body. It has vibrant colors, a smooth feel, and superior moisture absorption, breathability, and drape compared to cotton fiber. It also boasts better dimensional stability, and fabrics made from it naturally resist wrinkles and require no ironing. Furthermore, it exhibits good colorfastness, maintaining its vibrant colors and soft feel even after multiple washes. However, Modal fiber is relatively expensive, and fabrics made from it have poor drape when used alone. Therefore, it is usually blended with other fibers to improve drape and control costs.

[0004] Cotton fiber is a commonly used fiber in the fabric industry, but it has obvious shortcomings. Its moisture-wicking properties are poor, and the fabric tends to stick to the skin after the body sweats. Moreover, after repeated washing, it is prone to fading, yellowing, and hardening of the hand, making it difficult to balance the comfort and appearance stability of long-term wear.

[0005] In existing technologies, there has been some research and development on blended fabrics made from corn fiber, but all of them have certain shortcomings: some technical solutions only focus on improving the fabric's UV resistance by setting a UV-resistant coating on the fabric surface or designing a specific yarn arrangement to enhance the function, but neglect the fabric's hand feel, comfort, moisture permeability, durability, and dimensional stability, while failing to control costs reasonably; some technical solutions achieve excellent antibacterial properties and a soft hand feel by blending corn fiber into the base layer and adding a variety of special substances to the fabric layer, but the cost is high, and the excellent properties of the fabric are overly dependent on the materials in the fabric layer. Once the fabric layer wears and fails, its core performance is lost, and its durability and service life are limited; other technical solutions focus on improving the fabric's stiffness by designing a specific stiffening layer structure and yarn combination to enhance the stiffness effect, but the process is complex and only focuses on a single performance, without considering other key wearing performances such as moisture absorption and breathability, antibacterial properties, and UV resistance, thus failing to meet the comprehensive performance requirements of the fabric. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a cotton, modal, and corn fiber blended fabric, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cotton, modal, and corn fiber blended fabric, made of cotton fiber, modal fiber, and corn fiber blend, wherein the weight percentage of cotton fiber is 38%~42%, the weight percentage of modal fiber is 28%~32%, and the weight percentage of corn fiber is 28%~32%;

[0008] The blended fabric is made of 40% JC long-staple cotton, 30% Modal, and 30% 9.8 tex corn fiber in both warp and weft yarns, using a compact Sirospun spinning method.

[0009] The fabric structure is a five-end warp satin weave, with a warp density of 850 ends / 10cm and a weft density of 400 ends / 10cm. The designed width is 254cm.

[0010] Its preparation process includes the following steps:

[0011] (1) Warping: Divide the 21,600 warp yarns into 2,024 warping beams. Each warping beam has no less than 900 yarns. The warping speed is 500-600 m / min and the tension of a single yarn is 3-15 cN.

[0012] (2) Sizing: A sizing machine equipped with 28 upper and lower double-layer warp beams is used to sizing and dry the yarn of 20 to 24 warp beams simultaneously. The sizing machine has two parallel sizing tanks. Each sizing tank adopts a double-immersion and double-pressure method. The width of the sizing roller is 2200mm. The combined width of the sizing rollers of the two sizing tanks is 4400mm. The sizing coverage coefficient of the sizing tank unit is 57%. The sizing material is a mixture of solid and liquid parts. The solid part accounts for 15±1% by weight. The liquid part is water. The solid part is a mixture of 868 starch, PVA1799, JF999, solid propylene and wax flakes.

[0013] (3) Reed threading: An automated reed threading machine is used to thread the 21,600 yarns on the warp beam after sizing through the stop warp, heddles and reed one by one;

[0014] (4) Weaving: Air-jet looms are used, equipped with 12 to 20 sets of auxiliary nozzles, with 2 auxiliary nozzles in each set controlled by the same control valve, and the auxiliary nozzles are arranged at equal intervals;

[0015] (5) Dyeing and finishing: Disperse reactive dyeing and calendering pre-shrinking process are adopted. The temperature of each process is controlled within 130℃. The width of the finished product is 250~255cm.

[0016] Preferably, the cotton fiber has a weight percentage of 40%, the modal fiber has a weight percentage of 30%, and the corn fiber has a weight percentage of 30%.

[0017] Preferably, in step (1), the number of warping beams is 2024 and the single yarn tension is 315cN.

[0018] Preferably, in step (2), the number of warp beams of the sizing machine is 28, and a double-layer layout is adopted.

[0019] Preferably, the solid portion in step (2) is a mixture of 50 kg of 868 starch, 12 kg of PVA1799, 50 kg of JF999, 5 kg of solid propylene and 2 kg of wax flakes.

[0020] Preferably, in step (2), the slurry temperature is 80-90℃, the cylinder main drying temperature is 100-105℃, the machine speed is 45-50m / min, the slurry tank viscosity is 7.2S, the slurry application rate is 13-15%, and the moisture regain rate is 7%.

[0021] Preferably, the spacing between the auxiliary nozzles in step (4) is 8~12cm.

[0022] Preferably, the process parameters of the air-jet loom in step (4) are: back beam height 6, depth 9; warp stop height 3, depth 6; opening time 290°; weft insertion time 80°; weft arrival time 230°; tension 2800~3000N.

[0023] Preferably, the width of the finished product after dyeing and finishing in step (5) is 250~255cm.

[0024] This invention provides a cotton, modal, and corn fiber blended fabric with the following beneficial effects:

[0025] 1. Significantly green and environmentally friendly characteristics: This invention selects corn fiber and modal fiber as the core blending components. Both have biodegradable properties. Corn fiber can decompose into harmless substances in the natural environment, while modal fiber is derived from natural raw materials and has no burden on the environment. The high proportion of these two fibers in the fabric makes the overall fabric naturally degradable and will not cause pollution to the environment after disposal. This meets the needs of green and environmentally friendly development and avoids the problem of traditional fabrics relying on non-renewable resources or being difficult to degrade.

[0026] 2. Durable and stable UV resistance: This invention fully utilizes the excellent UV resistance of corn fiber itself. Its molecular structure characteristics enable it to effectively block ultraviolet rays. At the same time, a specific structure is adopted in the fabric weave design to further reduce UV transmittance without relying on additional coatings or other auxiliary means. Compared with existing technologies that rely on coatings, the UV resistance of this invention originates from the characteristics of the fiber itself and the fabric structure design. It will not fail due to fabric wear, has a longer service life, and avoids the problems of hand feel and increased cost that coatings may cause.

[0027] 3. Enhanced Moisture Absorption, Breathability, and Comfort: This invention utilizes a blend design of corn fiber, modal fiber, and cotton fiber to achieve complementary advantages in the moisture absorption and breathability of these three fibers. Corn fiber possesses excellent wicking properties, while modal fiber has superior moisture absorption capacity compared to cotton fiber. Together, they significantly improve the poor moisture wicking properties of cotton fiber, effectively preventing the fabric from clinging to the skin after sweating and greatly enhancing the dryness and comfort of the fabric during wear.

[0028] 4. Optimized Durability and Appearance Stability: The colorfastness and wrinkle-resistant properties of Modal fiber are fully utilized in the blend, compensating for the shortcomings of cotton fiber, such as easy fading and yellowing after repeated washing and hardening of the hand. This allows the fabric to maintain its bright color and soft hand feel even after repeated washing, improving its washability. At the same time, the wrinkle-resistant and wrinkle-resistant properties of Modal fiber give the fabric a certain degree of wrinkle resistance, reducing wrinkles during wear and resulting in better appearance stability. In addition, the core performance of this invention originates from the inherent characteristics of the fiber and the blend structure, rather than relying on surface additives. Even if the fabric surface experiences slight wear, the core performance can still be maintained, and the durability and service life are significantly better than existing technical solutions that rely on surface additives.

[0029] 5. Balance between cost and performance: This invention, through a reasonable fiber blending design, introduces modal and corn fibers to improve performance while controlling overall cost with the reasonable combination of cotton fibers, avoiding the problem of excessively high prices caused by using only high-cost fibers; at the same time, it simplifies the production process by eliminating the need for complex coating processes or multi-layer structure designs, further reducing costs, and achieving a balance between the overall performance and cost of the fabric, making it easier to meet the market's demand for high-performance, cost-effective fabrics.

[0030] 6. Comprehensive performance: Existing technologies mostly focus on improving a single fabric performance, while this invention achieves performance improvements in multiple aspects such as environmental protection, UV resistance, moisture absorption and breathability, durability, and appearance stability through complementary fiber characteristics and fabric structure design. It does not require sacrificing one performance to enhance another, thus meeting the fabric's demand for comprehensive performance and making it applicable to a wider range of scenarios. Attached Figure Description

[0031] Figure 1This is a compositional diagram of a cotton, modal, and corn fiber blended fabric according to the present invention.

[0032] Figure 2 This is a fabric structure diagram illustrating the cotton, modal, and corn fiber blended fabric described in this invention. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-2 As shown, the present invention provides a technical solution: This embodiment provides a specific implementation scheme for a cotton, modal, and corn fiber blended fabric. By clarifying the fiber ratio, yarn specifications, fabric structure, and preparation process parameters, the fabric performance is ensured to be stable and controllable. The following is a detailed description.

[0035] The blended fabric of this embodiment uses cotton fiber, modal fiber, and corn fiber as core raw materials, and achieves complementary advantages of each fiber performance through scientific proportioning and precise process.

[0036] Fiber composition: The fabric contains 38%–42% cotton fiber by weight, 28%–32% modal fiber by weight, and 28%–32% corn fiber by weight. To further optimize the overall performance of the fabric, the preferred scheme uses a balanced ratio of the three fibers by weight: 40% cotton fiber, 30% modal fiber, and 30% corn fiber. This ratio achieves the best balance between moisture absorption and breathability, cost control, and durability.

[0037] Yarn specifications: The warp and weft yarns of the blended fabric are uniformly composed of 40% JC long-staple cotton, 30% Modal, and 30% corn fiber, with a yarn fineness of 9.8 tex and a compact Sirospun spinning method. The compact Sirospun process results in a denser yarn structure, reduces hairiness, and improves yarn strength and abrasion resistance, laying the foundation for the superior performance of the subsequent fabric.

[0038] The blended fabric of this embodiment employs a specific fabric structure and density design to ensure the fabric's appearance, texture, and performance. The fabric structure uses a five-end warp satin weave, which gives the fabric a delicate satin sheen and a smooth feel. The warp density is set at 850 ends / 10cm, and the weft density at 400 ends / 10cm. This high warp and weft density provides the fabric with good tightness and wrinkle resistance. The fabric's design width is 254cm, balancing ease of production and processing with subsequent cutting and use requirements.

[0039] The blended fabric preparation process of this embodiment includes five core steps in sequence: warping, sizing, reed threading, weaving, and dyeing and finishing. The specific parameters and operating specifications for each step are as follows:

[0040] 1. Warping Process: The core of the warping process is to arrange the warp yarns in an orderly manner to ensure uniform warp tension in subsequent weaving. During operation, the 21,600 warp yarns are divided into 20-24 warping beams according to the principle of uniform distribution. Each warping beam contains no less than 900 yarns to ensure balanced stress on the yarns during warping. The warping speed is controlled at 500-600 m / min, and the single yarn tension is set at 3-15 cN. In the preferred scheme, the number of warping beams is 20-24, and the single yarn tension is maintained at 3-15 cN. This combination of parameters can effectively reduce warp breakage and improve warping efficiency.

[0041] 2. Sizing Process: The sizing process aims to enhance the abrasion resistance and cohesion of the yarn, providing a stable guarantee for the weaving process. This process uses a sizing machine equipped with 28 upper and lower double-layered warp beams to simultaneously sizing and dry the yarn from 20 to 24 warp beams. The double-layered warp beam design can increase the yarn throughput and optimize production efficiency.

[0042] The sizing machine is equipped with two sizing tanks arranged side by side. Each sizing tank adopts a double-immersion and double-pressure sizing method to ensure uniform sizing of the yarn. The width of the sizing roller in a single sizing tank is 2200mm, and the combined width of the sizing rollers in the two sizing tanks reaches 4400mm. The sizing coverage coefficient per sizing tank unit is 57%. This structural design can adapt to the production needs of wide-width fabrics.

[0043] The sizing agent is made by mixing a solid component with a liquid component. The liquid component is water, and the solid component is added to the liquid at a weight ratio of 15 ± 1%. The specific formula for the solid component is: 50 kg of 868 starch, 12 kg of PVA1799, 50 kg of JF999, 5 kg of solid propylene, and 2 kg of wax flakes. This formula can form a uniform and tough sizing film on the yarn surface while ensuring the softness of the yarn.

[0044] The key process parameters for sizing are as follows: sizing temperature is 80~90℃, cylinder drying temperature is 100~105℃, sizing machine speed is 45~50m / min, sizing tank viscosity is maintained at 7.2S, sizing rate is controlled at 13~15%, and yarn moisture regain is stabilized at 7%. By precisely controlling these parameters, over-sizing or under-sizing of the yarn can be avoided, ensuring the quality of sizing.

[0045] 3. Reed threading process: To ensure orderly warp arrangement during weaving, this process uses an automated reed threading machine to precisely thread the 21,600 yarns on the sized warp beam one by one through the stop warp, heddles, and reed. The application of automated equipment can greatly improve reed threading efficiency, reduce errors caused by manual operation, and ensure clear warp opening.

[0046] 4. Weaving process: This process uses an air-jet loom for weaving. The loom is equipped with 12 to 20 sets of auxiliary nozzles. Each set of auxiliary nozzles contains two nozzles controlled by the same control valve. The auxiliary nozzles are arranged at equal intervals of 8 to 12 cm. This configuration can ensure that the weft yarn flies smoothly during the weaving process and improve the efficiency and quality of weft insertion.

[0047] The specific process parameters for the air-jet loom are set as follows: back beam height 6, depth 9; warp stop height 3, depth 6; shedding time 290°; weft insertion time 80°; weft arrival time 230°; warp tension controlled at 2800~3000N. By optimizing these parameters, the weaving requirements of five-end warp satin weave can be adapted to ensure the stability of the fabric structure and the smoothness of the surface.

[0048] 5. Dyeing and Finishing Process: The dyeing and finishing process combines disperse reactive dyeing with calendering and pre-shrinking. During the dyeing process, the temperature is controlled below 130℃ at each stage to prevent damage to the fiber properties. After dyeing and finishing, the finished fabric width is stable at 250~255cm, meeting design and usage requirements. Simultaneously, the calendering and pre-shrinking treatment improves the fabric's luster and dimensional stability, reducing shrinkage and deformation during subsequent use.

[0049] Through the synergistic effect of the above fiber ratio, yarn specifications and preparation process, the prepared cotton, modal and corn fiber blended fabric can give full play to the advantages of each raw material and has good moisture absorption and breathability, durability and environmental protection performance.

[0050] This embodiment provides a specific implementation scheme for a cotton, modal, and corn fiber blended fabric. By clearly defining the fiber ratio, yarn specifications, fabric structure, and preparation process parameters, the fabric performance is ensured to be stable and controllable. The following description is based on examples and performance test data.

[0051] Fiber blending range: The weight percentage of cotton fiber in the fabric is 38%~42%, modal fiber is 28%~32%, and corn fiber is 28%~32%; the preferred blending ratio is 40% cotton fiber, 30% modal fiber, and 30% corn fiber.

[0052] Basic process parameters: Yarn specifications: both warp and weft yarns are 40% JC long-staple cotton / 30% Modal / 30% corn fiber 9.8tex, compact Sirospun yarn; Fabric structure: five-end warp satin weave, warp density 850 ends / 10cm, weft density 400 ends / 10cm, designed width 254cm; General process: warping speed 500-600m / min, sizing solids content 15±1%, dyeing and finishing temperature ≤130℃, finished width 250-255cm.

[0053] Examples and Comparative Examples: Example (variables: fiber ratio, key process parameters): Table 1 is shown below:

[0054] Group Fiber ratio (cotton / modal / corn) Number of warping axes (pieces) Sizing temperature (°C) Number of auxiliary nozzles (sets) Auxiliary nozzle spacing (cm) Example 1 40% / 30% / 30% (preferred ratio) 22 85 16 10 Example 2 38% / 32% / 30% 20 80 14 8 Example 3 42% / 28% / 30% 24 90 18 12 Example 4 40% / 30% / 30% 22 85 20 10

[0055] Comparative examples (comparison dimensions: fiber composition, process simplification);

[0056] Table 2 is shown below:

[0057] Group Fiber ratio (cotton / modal / corn) Key Differences Explanation Comparative Example 1 50% / 50% / 0% (No corn fiber) Remove corn fibers, retain only cotton and modal fibers, and follow the same process as in Example 1. Comparative Example 2 50% / 0% / 50% (No Modal fiber) Modal fibers were removed, and only cotton and corn fibers were retained. The process was the same as in Example 1. Comparative Example 3 100% cotton (pure cotton fabric) Traditional pure cotton fabrics are made using conventional ring spinning and plain weave, with process parameters adapted to the characteristics of pure cotton. Comparative Example 4 Existing technology fabrics 75 parts of urethane-type polyester fiber and 25 parts of quaternary ammonium salt-type ramie fiber were prepared according to existing technology.

[0058] Preparation steps (taking Example 1 as an example):

[0059] Warping process: The 21,600 warp yarns are evenly divided into 22 warping beams, with 982 yarns per warping beam (21,600 ÷ 22 ≈ 982). The warping speed is 550 m / min, and the single yarn tension is 8 cN to ensure uniform warp yarn tension.

[0060] Sizing process: A sizing machine equipped with 28 upper and lower double-layer warp beams is used to sizing and dry the yarns of 22 warp beams simultaneously; the sizing machine is equipped with 2 parallel sizing tanks (double immersion and double pressure), the sizing roller has a single tank width of 2200mm, a combined width of 4400mm, and a coverage coefficient of 57%.

[0061] Slurry formulation: solids (50kg 868 starch, 12kg PVA1799, 50kg JF999, 5kg solid propylene, 2kg wax flakes) and water, with solids accounting for 15%;

[0062] Process parameters: slurry temperature 85℃, cylinder main drying temperature 102℃, machine speed 48m / min, slurry tank viscosity 7.2S, slurry application rate 14%, moisture regain 7%.

[0063] Reed threading process: Through an automated reed threading machine, the 21,600 yarns on the warp beam after sizing are threaded one by one through the stop warp, heddles and reed, ensuring that the warp yarns are arranged in an orderly manner.

[0064] Weaving process: An air-jet loom is used, equipped with 16 sets of auxiliary nozzles (2 in each set, controlled by the same control valve), with a nozzle spacing of 10cm; Loom parameters: back beam height 6, depth 9, warp stop height 3, depth 6, shedding time 290°, weft insertion time 80°, weft arrival time 230°, tension 2900N, and woven into a greige fabric with a width of 270cm.

[0065] Dyeing and finishing process: Disperse reactive dyeing + calendering and pre-shrinking process is adopted. The temperature of each process is controlled at 125℃. After desizing, degreasing, mercerizing, dyeing and finishing, the finished product width is 252cm.

[0066] Other examples and comparative examples:

[0067] Examples 2-4 only adjusted the variable parameters in Table 1, and the rest of the process was the same as in Example 1; Comparative Examples 1-3 were prepared according to the corresponding fiber ratio and the appropriate process, and Comparative Example 4 was prepared strictly according to the process steps disclosed in the prior art.

[0068] Performance testing and results analysis:

[0069] The fabrics of each embodiment and comparative example were subjected to performance testing in accordance with the standards. The test items included moisture absorption and breathability, UV resistance, color fastness, abrasion resistance, antibacterial properties, and environmental friendliness. The specific standards are as follows:

[0070] Water absorption rate: GB / T21655.1-2008 "Evaluation of the moisture absorption and quick-drying properties of textiles - Part 1: Single-item combination test method";

[0071] Air permeability: GB / T5453-1997 "Determination of air permeability of textile fabrics" (100 Pa pressure, 20 ° C temperature, 65% relative humidity);

[0072] UV protection performance (UPF value): GB / T18830-2009 "Evaluation of UV protection performance of textiles";

[0073] Color fastness to washing: GB / T3921-2013 "Textiles - Tests for color fastness to soaping" (40℃, 5 washes);

[0074] Abrasion resistance: GB / T21196.3-2007 "Textiles - Martindale method for determination of abrasion resistance - Part 3: Determination of mass loss";

[0075] Antibacterial rate: GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles - Part 3: Shaking method" (Test strains: Staphylococcus aureus, Escherichia coli);

[0076] Biodegradation rate: GB / T20197-2006 "Definition, classification, marking and degradation performance requirements of degradable plastics" (6 months of soil burial).

[0077] Test results: Table 3 is shown below:

[0078] Testing items Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Water absorption rate (%) 286.5 278.3 272.6 289.1 225.4 201.7 142.3 269.3 Air permeability (mm / s) 328 315 308 335 296 282 254 302 UV protection UPF value 50+ 48 46 50+ 23 45 18 28 Colorfastness to washing (grade) 4-5 4 4 4-5 3-4 3 2-3 4 Abrasion resistance (Martindale, times) 28600 27500 26800 29200 21300 20500 15800 23600 Antibacterial rate - Staphylococcus aureus (%) 95.8 94.2 93.6 96.3 82.5 92.8 71.3 98.6 Antibacterial rate - Escherichia coli (%) 94.6 93.1 92.5 95.2 80.7 91.5 69.8 97.3 Biodegradation rate (6 months, %) 86.3 84.7 83.2 87.1 62.5 81.6 45.8 32.7

[0079] Results analysis:

[0080] Moisture absorption and breathability: The water absorption rate (272.6% - 289.1%) and air permeability (308335 mm / s) of Example 14 were both better than those of Comparative Example 13 and slightly higher than those of Comparative Example 4. The core reason is that the wicking properties of corn fiber and the high moisture absorption capacity of modal fiber work synergistically to compensate for the insufficient moisture wicking of cotton fiber, while the compact Siro-spun and five-end satin weave further optimizes the breathability structure.

[0081] UV resistance: Examples 1 and 4 achieved UPF values ​​of 50+ (the highest level), and Examples 2 and 3 also had values ​​of ≥46, which were significantly better than Comparative Examples 1 (23), 3 (18), and 4 (28). This is due to the UV-resistant molecular structure of corn fiber itself, combined with the physical barrier effect of the high warp density satin weave, which can achieve a long-lasting and stable UV resistance effect without the need for additional coating.

[0082] Durability and appearance stability: The color fastness to washing (grade 44-5) and abrasion resistance (26,800-29,200 cycles) of the examples are superior to those of the comparative examples, especially comparative example 3 (pure cotton fabric). The color fastness advantage of modal fiber and the reinforcing effect of blending the three fibers solve the problems of easy fading, stiffening of the hand feel, and poor abrasion resistance of pure cotton fabric.

[0083] Antibacterial properties: The antibacterial rates against Staphylococcus aureus and Escherichia coli in the examples were ≥92.5%, which was slightly lower than that of Comparative Example 4 (which relied on quaternary ammonium salt ramie fiber modification). However, no chemical modification of the fiber was required, and the antibacterial properties were derived from the characteristics of the fiber itself, which is more environmentally friendly and durable, avoiding the risk of skin irritation that may be caused by chemical modification.

[0084] Environmental performance: The biodegradability rate of the example (83.2%~87.1%) is much higher than that of Comparative Example 4 (32.7%) and Comparative Example 1 (62.5%). This is because both corn fiber and modal fiber are biodegradable materials and account for 60% of the total. They do not burden the environment after disposal and meet the needs of green and environmentally friendly development.

[0085] In summary, this invention achieves a synergistic improvement in moisture absorption and breathability, UV resistance, durability, antibacterial properties, and environmental friendliness through the scientific ratio of cotton, modal, and corn fiber and precise process design. Its overall performance is superior to traditional pure cotton fabrics, binary blended fabrics, and existing modified fabrics.

[0086] 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 cotton, modal, and corn fiber blended fabric, characterized in that, It is made of a blend of cotton fiber, modal fiber, and corn fiber, wherein the weight percentage of cotton fiber is 38%~42%, the weight percentage of modal fiber is 28%~32%, and the weight percentage of corn fiber is 28%~32%. The blended fabric is made of 40% JC long-staple cotton, 30% Modal, and 30% 9.8 tex corn fiber in both warp and weft yarns, using a compact Sirospun spinning method. The fabric structure is a five-end warp satin weave, with a warp density of 850 ends / 10cm and a weft density of 400 ends / 10cm. The designed width is 254cm. Its preparation process includes the following steps: (1) Warping: Divide the 21,600 warp yarns into 2,024 warping beams. Each warping beam has no less than 900 yarns. The warping speed is 500-600 m / min and the tension of a single yarn is 3-15 cN. (2) Sizing: A sizing machine equipped with 28 upper and lower double-layer warp beams is used to sizing and dry the yarn of 20 to 24 warp beams simultaneously. The sizing machine has two parallel sizing tanks. Each sizing tank adopts a double-immersion and double-pressure method. The width of the sizing roller is 2200mm. The combined width of the sizing rollers of the two sizing tanks is 4400mm. The sizing coverage coefficient of the sizing tank unit is 57%. The sizing material is a mixture of solid and liquid parts. The solid part accounts for 15±1% by weight. The liquid part is water. The solid part is a mixture of 868 starch, PVA1799, JF999, solid propylene and wax flakes. (3) Reed threading: An automated reed threading machine is used to thread the 21,600 yarns on the warp beam after sizing through the stop warp, heddles and reed one by one; (4) Weaving: Air-jet looms are used, equipped with 12 to 20 sets of auxiliary nozzles, with 2 auxiliary nozzles in each set controlled by the same control valve, and the auxiliary nozzles are arranged at equal intervals; (5) Dyeing and finishing: Disperse reactive dyeing and calendering pre-shrinking process are adopted. The temperature of each process is controlled within 130℃. The width of the finished product is 250~255cm.

2. The cotton, modal, and corn fiber blended fabric according to claim 1, characterized in that, The weight percentage of cotton fiber is 40%, modal fiber is 30%, and corn fiber is 30%.

3. The cotton, modal, and corn fiber blended fabric according to claim 2, characterized in that, In step (1), the number of warping beams is 2024 and the tension of a single yarn is 315cN.

4. The cotton, modal, and corn fiber blended fabric according to claim 3, characterized in that, In step (2), the number of warp beams of the sizing machine is 28, and a double-layer layout is adopted.

5. The cotton, modal, and corn fiber blended fabric according to claim 4, characterized in that, In step (2), the solid part is composed of 50 kg of 868 starch, 12 kg of PVA1799, 50 kg of JF999, 5 kg of solid propylene and 2 kg of wax flakes.

6. The cotton, modal, and corn fiber blended fabric according to claim 5, characterized in that, In step (2), the slurry temperature is 80-90℃, the cylinder drying temperature is 100-105℃, the machine speed is 45-50m / min, the slurry tank viscosity is 7.2S, the slurry application rate is 13-15%, and the moisture regain rate is 7%.

7. The cotton, modal, and corn fiber blended fabric according to claim 6, characterized in that, In step (4), the spacing between the auxiliary nozzles is 8~12cm.

8. The cotton, modal, and corn fiber blended fabric according to claim 7, characterized in that, The process parameters of the air-jet loom in step (4) are: back beam height 6, depth 9; warp stop height 3, depth 6; shedding time 290°; weft insertion time 80°; weft arrival time 230°; tension 2800~3000N.

9. A cotton, modal, and corn fiber blended fabric according to claim 8, characterized in that, In step (5), the width of the finished product after dyeing and finishing is 250~255cm.

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