A wool / cotton / conductive fiber blended yarn, its preparation method and application

Abstract

This invention belongs to the field of textile technology, specifically relating to a wool / cotton / conductive fiber blended yarn, its preparation method, and its application. The preparation method of the blended yarn includes the following steps: dyeing wool and long-staple cotton separately; conditioning the dyed wool; mixing the conditioning wool with long-staple cotton and conductive fibers to obtain a blend; combing, carding, and drawing the blend to obtain a drawn product; and then processing the drawn product through roving, spinning, winding, drawing, twisting, and steaming to obtain the wool / cotton / conductive fiber blended yarn. This invention improves yarn quality by optimizing the dyeing process and combining it with a semi-fine spinning process. It achieves the goal of ensuring the color purity of the finished fabric, as well as various color fastness properties such as washability, sunlight resistance, and abrasion resistance, while also meeting various indicators such as anti-pilling, anti-abrasion performance, and other properties.

Description

Technical Field

[0001] This invention belongs to the field of textile technology, specifically relating to a wool / cotton / conductive fiber blended yarn, its preparation method, and its application. Background Technology

[0002] Wool is an excellent natural animal fiber textile raw material. Its fibers are soft and elastic, possessing excellent warmth retention, moisture absorption, and a gentle luster, making it suitable for producing mid-to-high-end clothing suitable for all seasons, as well as decorative and industrial fabrics. Xinjiang long-staple cotton, benefiting from the abundant sunshine in its growing region, has high fiber maturity, pure white color, few impurities, and good uniformity in evenness and fineness. These characteristics endow its fabrics with excellent softness, breathability, ease of dyeing, and good colorfastness. However, both fibers also have their limitations. For example, the scaly structure of wool leads to significant shrinkage, and its fiber length is relatively short with lower strength. While cotton fibers are longer and more hydrophilic, they are more rigid. These differences in characteristics make pretreatment and dyeing processes more difficult and complex.

[0003] While blending processes can combine the warmth, elasticity, and drape of wool with the moisture absorption, breathability, dryness, and cost advantages of Xinjiang long-staple cotton, a significant challenge remains. When blended, the ends of Xinjiang long-staple cotton fibers easily snag on wool scales, leading to pilling after wear and friction, and making overall shrinkage difficult to control. Although the addition of Xinjiang long-staple cotton can suppress the shrinkage tendency of wool to some extent, improper handling can actually cause anisotropic shrinkage between the two fibers. Obtaining a wool-Xinjiang long-staple cotton blend fabric with ideal uniformity, colorfastness, dimensional stability, durability, and hand feel, while effectively suppressing pilling and reducing costs, remains the core challenge of wool-Xinjiang long-staple cotton blending. Summary of the Invention

[0004] The purpose of this invention is to provide a wool / cotton / conductive fiber blended yarn, its preparation method, and its application, thereby overcoming the shortcomings of existing technologies. By optimizing the dyeing method and the worsted spinning process, domestic wool, Xinjiang long-staple cotton combed slivers, and conductive fibers are blended to produce a fabric with advantages such as uniform dyeing, high toughness, good resilience, resistance to deformation after prolonged wear, and wear resistance and durability. It maintains a good appearance and performance even after long-term wear. Simultaneously, the prepared fabric has excellent warmth retention and good breathability, allowing moisture to escape from the body and keeping the body dry and comfortable; furthermore, the fabric also has good antistatic properties.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] In a first aspect, the present invention provides a method for preparing a wool / cotton / conductive fiber blended yarn, comprising the following steps:

[0007] Wool and long-staple cotton are dyed separately, and the dyed wool is then treated with a health-preserving process.

[0008] The wool that has been cured is mixed with long-staple cotton and conductive fibers to produce a blended material.

[0009] The mixture is combed, pinned, and drawn to obtain the drawn product.

[0010] After drawing, the product is roving, spinning, winding, doubling, twisting, and steaming to achieve the wool / cotton / conductive fiber blended yarn.

[0011] In some other embodiments, wool, long-staple cotton, and conductive fibers are mixed in a mass ratio of (70-75):(24-30):(1-2). Specifically, the mass ratio of wool, long-staple cotton, and conductive fibers is 70:29:1, or 72:27:1, or 73:25:2, or 75:24:1.

[0012] The average length of the wool is 40-50 mm, and the fineness is 19.5-21.3 μm;

[0013] The average fiber length of long-staple cotton is 35-39 mm, and the fineness is 14-16 μm;

[0014] The conductive fiber is a nylon-based conductive fiber with a specification of 3D×51mm.

[0015] Specifically, the wool selected is domestically produced wool of 66-70S grade, with average lengths of 40, 45, and 50 mm, and average fineness of 19.5, 20, 21, and 21.3 μm. Domestic wool fiber exhibits certain advantages in terms of quality, price, adaptability, resources, warmth retention, and environmental friendliness, making it an indispensable raw material in textile production. These advantages give domestic wool a broad development prospect and strong competitiveness in the market.

[0016] The long-staple cotton is selected from Xinjiang, with average fiber lengths of 35, 36, 37, 38, and 39 mm, and finenesses of 14, 15, and 16 μm. Xinjiang long-staple cotton excels in multiple quality indicators, including fiber length, fineness, strength, luster, drape, durability, wrinkle resistance, stretch, elasticity, and environmental friendliness. Compared to Pima cotton, Xinjiang long-staple cotton has advantages in fiber length and fineness and is less prone to static electricity, making it suitable for producing high-end textiles with higher fiber quality requirements.

[0017] The conductive fiber is made of nylon-based conductive fiber, with a specification of 3D×51 mm. The addition of conductive fiber can effectively improve the static electricity effect of the yarn, making it more comfortable and free to wear.

[0018] In some other embodiments, the wool dyeing process is as follows: Under normal temperature and pressure, auxiliaries and dyes are added to the dyeing vat in sequence and the vat is run; the vat lid is closed, compressed air is injected into the vat for pressurization, and the temperature is raised to 80-85°C at 1.0-1.5°C / min, and the temperature is maintained for 40-70 min before draining; the pH is adjusted to 8.0-8.5 by alkaline washing for 15-25 min, followed by rinsing with warm water for 10-20 min, and then rinsing with cold water until clear.

[0019] The dyeing process for long-staple cotton is as follows: At room temperature and pressure, add Noviclone dye to the dyeing vat and run it; then add pre-dissolved sodium sulfate in batches; close the vat lid, add compressed air to pressurize the vat, and at the same time raise the temperature to 50-55℃ at 2.0℃ / min, keep it at this temperature for 20-30 min, add soda ash in batches, keep it at this temperature for 30-40 min, and then drain the water; add low-temperature soaping agent TF-230HF, soap and wash for 20-30 min, rinse with warm water for 10-20 min, then rinse with cold water until clear, and add environmentally friendly color-fixing agent ECO to fix the color.

[0020] In some other embodiments, during the dyeing of wool, bromoacrylamide is used as a low-temperature dye, and the ethoxylated fatty acid ammonium derivative ALBEGLA-B is used as a low-temperature leveling agent; Millerland LTD, mainly composed of diethylene glycol and tallow alkyl ethoxyamine, is used as a low-temperature dyeing auxiliary agent. During the dyeing of long-staple cotton, Novilclone is used as the dye, and TF-230HF is used as a low-temperature anti-staining soaping agent; during the dyeing of wool and long-staple cotton, air is injected and pressurized to a pressure of 1.5-1.7 bar, and the temperature of the warm water is 45-50 °C.

[0021] In some other embodiments, the wool conditioning process involves adding wool oil, an antistatic agent, and water to the dyed wool and conditioning for 24-48 hours. Specifically, the wool conditioning process involves adding 2-3% antistatic agent, 0.5-1.0% wool oil, and 10-13% water according to the weight of the dyed wool. The antistatic agent used is not specifically limited; any conventional antistatic agent will suffice. The conditioning process for long-staple cotton combed sliver involves adding water to the long-staple cotton combed sliver and conditioning for 24-48 hours, resulting in a moisture regain of 10-15%. Optionally, the moisture regain can be 10%, 12%, 14%, or 15%. The conditioning process for conductive fibers involves adding an antistatic agent to the dyed conductive fibers and conditioning for 24-48 hours. The type of antistatic agent used is not specifically limited; any conventional antistatic agent will suffice. The conductive fiber is selected from nylon-based conductive fibers with a specification of 3D × 51mm.

[0022] In some other embodiments, the dry weight of the combed sliver is 20 g / 5m-25 g / 5m, the doffer speed is 20 r / min-25 r / min, and the cylinder speed is 250 r / min-280 r / min; the five-point spacing between the cylinder and the flats is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm; and the spacing between the licker-in roller and the feed plate is 0.3-0.5 mm. Specifically, the dry weight of the combed sliver is 20 g / 5m, 22 g / 5m, 24 g / 5m, and 25 g / 5m, the doffer speed is 20, 22, 24, and 25 r / min, and the cylinder speed is 250, 260, 270, and 280 r / min. Cotton fibers are fine and soft, and are prone to forming knots during the combing process. The gap between the cylinder and the flats should be small to avoid the fibers rubbing together and forming a lot of knots. At the same time, the length of the wool must be taken into account. The gap should not be too small, otherwise the fibers will be easily damaged, broken, and the short fiber content will increase, resulting in more wool particles.

[0023] In some other embodiments, the draft ratio of the first pin in the comb is 6-7 times, the dry weight of the sliver is 18.0 g / 5m-20.0 g / 5m, the distance between the pin plate and the front roller is 25-26 mm, and the machine speed is 35-40 m / min. The draft ratio of the second pin is 6-7 times, the dry weight of the sliver is 18.0 g / 5m-20.0 g / 5m, the distance between the pin plate and the front roller is 25-26 mm, and the machine speed is 35-40 m / min. Specifically, the draft ratio of the first pin is 6, 6.5, or 7 times, the dry weight of the sliver is 18.0 g / 5m, 19.0 g / 5m, or 20.0 g / 5m, the distance between the pin plate and the front roller is 25 or 26 mm, and the machine speed is 35, 36, 37, 38, or 40 m / min. The draw ratios for the two needles are 6, 6.5, and 7 times, the dry weights of the finished strips are 18.0 g / 5m, 19.0 g / 5m, and 20.0 g / 5m, the distance between the needle plate and the front roller is 25 and 26 mm, and the machine speeds are 35, 36, 37, 38, and 40 m / min.

[0024] In some other embodiments, the slivers are fed in three ways: one group consists of 6-8 slivers fed together, with a draft ratio of 8.0-8.5, a spacing of 25×30mm, an output weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85 m / min; the second group consists of 7-8 slivers fed together, with a draft ratio of 8.0-8.5, an output weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85 m / min; and the third group consists of 7-8 slivers fed together, with a draft ratio of 8.0-8.5, an output weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85 m / min.

[0025] Specifically, one method involves feeding 6, 7, or 8 strands together, with draw ratios of 8.0, 8.1, and 8.5, a spacing of 25×30 mm, and output weights of 15 g / 5m, 16 g / 5m, 18 g / 5m, and 20 g / 5m, at machine speeds of 80, 82, 84, and 85 m / min; the other method involves feeding 7 or 8 strands together, with draw ratios of 8.0, 8.2, 8.4, and 8.5, and output weights of 15 g / 5m, 16 g / 5m, 18 g / 5m, and 20 g / 5m, at machine speeds of 80, 82, 84, and 85 m / min. m / min; three feeds are fed into 7 or 8 strands, with draw ratios of 8.0, 8.2, 8.4, and 8.5 times, and output weights of 15g / 5m, 16g / 5m, 18g / 5m, and 20g / 5m, and machine speeds of 80, 82, 84, and 85 m / min.

[0026] Preferably, 7 strands are fed in at once; the draft ratio is 8.1 times, the spacing is 25×30 mm, and the output weight is 16g / 5m; after the second and third rounds, 8 strands are fed in each round, the draft ratio is 8.0 times, the output weight is 16g / 5m, and the machine speed is 80 m / min.

[0027] In some other embodiments, the draft ratio of the roving is 6-8.5 times, the sliver weight is 0.4-0.5 g / m, and the machine speed is 9.0-9.5 m / min. Specifically, the draft ratio of the roving is 6, 7, 8, or 8.5 times, the sliver weight is 0.4, 0.45, or 0.5 g / m, and the machine speed is 9.0, 9.1, 9.2, 9.4, or 9.5 m / min.

[0028] The fine yarn is spun using Sirospun yarn, with a draft ratio of 30-35 times and a twist of 680-840 T / M; the machine speed is 10.0-11.0 m / min, and the yarn spacing is (44-47)×(49-53) mm. Specifically, the draft ratios are 30, 32, 34, and 35 times, and the twists are 680, 700, 720, 740, 760, 780, 800, 820, and 840 T / M; the machine speeds are 10.0, 10.3, 10.5, 10.8, and 11.0 m / min.

[0029] The winding speed is 650-750 m / min, the short thick section is 2.40-2.50 cm long, the long thick section is 1.3-1.35 cm long, the long thick section is 30-35 cm long, the thin section is 25.0-30.0 cm long, the thin section is 30-35 cm long, the long offset is -13% to +13% and 12 m, and the short offset is -20% to +20% and 2 m long. Specifically, the winding speeds are 650, 680, 700, 720, 740, and 750 m / min; the short thick section (DS) is 2.40, 2.45, and 2.50 cm; the short thick section length (LS) is 2.0, 2.2, 2.4, and 2.5 cm; the long thick section (DL) is 1.3, 1.31, 1.32, 1.33, 1.34, and 1.35 cm; the long thick section length (LL) is 30, 31, 32, 33, 34, and 35 cm; and the thin section (D) is 25.0, 26, 27, 28, 29, and 30.0 cm; with the thin section length being 30, 31, 32, 33, 34, and 35 cm.

[0030] Preferably, the vehicle speed is 700 m / min, the short thick section DS: 2.40, LS: 2.2cm, the long thick section DL: 1.32, LL: 30cm, the thin section D: 25.00, L: 30 cm.

[0031] The spinning speed is 450-500 m / min. Specifically, the spinning process requires controlling the yarn tension and shaping, and the spinning speed is 450, 480, or 500 m / min. Preferably, the speed is 480 m / min.

[0032] The spindle speed of the twisting wire is 5000-6000 r / min, the designed twist is 450-480 T / M, and the twist direction is S. Specifically, the spindle speed of the twisting wire is 5000, 5200, 5400, 5500, or 6000 r / min, and the designed twist is 450, 460, 470, or 480 T / M. Preferably, the spindle speed is 5500 r / min and the designed twist is 460 T / M.

[0033] The steaming temperature is 60-70℃, the holding time is 25-35 min, and the pressure is 120-180 mb. Specifically, the steaming temperatures are 60, 65, and 70℃, the holding times are 25, 30, and 35 min, and the pressures are 120, 140, 150, 160, and 180 mb. Preferably, high-temperature steaming is used, with a temperature of 65℃, a holding time of 30 min, and a pressure of 150 mb.

[0034] In a second aspect, the present invention provides a wool / cotton / conductive fiber blended yarn prepared by the method for preparing the wool / cotton / conductive fiber blended yarn described in the first aspect.

[0035] This garment is made from a blend of domestically produced wool, Xinjiang long-staple cotton combed slivers, and conductive fibers, fully embodying the use of domestically sourced textile materials. The fabric boasts high toughness, excellent resilience, and resists deformation even after prolonged wear. It is wear-resistant and durable, maintaining its excellent appearance and performance even after extended use. It offers superior warmth retention while maintaining good breathability, allowing moisture to escape and keeping the body dry and comfortable.

[0036] Thirdly, the present invention provides the application of the wool / cotton / conductive fiber blended yarn described in the second aspect in clothing.

[0037] This invention employs a special fiber combination and structural design to allow air to circulate inside the garment, promptly expelling sweat and moisture and keeping the body dry, thereby meeting the garment's requirements for breathability and moisture absorption.

[0038] The beneficial effects of this invention are:

[0039] (1) This invention uses a mixture of wool, long-staple cotton, and conductive fibers as raw materials, making full use of the high strength of long-staple cotton and the characteristics of wool to overcome the contradiction between strength and elongation in traditional blended yarns. The addition of conductive fibers constructs a charge dissipation network, improving the static electricity effect of the yarn. By optimizing the dyeing process and combining it with the worsted spinning process, the advantages of wool worsted spinning and cotton spinning are fully utilized to improve the quality of the yarn. This invention achieves the goal of ensuring the color purity of the finished fabric and the color fastness of the fabric to various conditions such as washability, sun resistance, and abrasion resistance, while also meeting the requirements of the finished fabric for anti-pilling, abrasion resistance, and other indicators.

[0040] (2) Among the raw materials used in this invention, domestic wool fiber has advantages in quality, price, adaptability, resources, warmth retention, and environmental protection; Xinjiang long-staple cotton has good fiber maturity, whiteness, and impurities due to the long sunshine hours in its production area, and good fiber uniformity and fineness, which makes the fabric have good softness and breathability, easy to dye and good color fastness. Blending wool and Xinjiang long-staple cotton can make full use of the advantages of both, ensuring comfort and environmental protection. At the same time, the addition of conductive fibers further improves the static electricity effect of the yarn, making the wearer more comfortable and free, and meeting people's increasingly higher consumption requirements with high-quality, high-tech products.

[0041] (3) The high-pressure low-temperature dyeing process of this invention compensates for the deficiency of low temperature by pressure, achieving efficient dyeing while protecting the fibers. It is especially suitable for high-end natural fibers and textiles with strict environmental protection requirements. The purpose of saving steam and reducing energy consumption is achieved by lowering the temperature. At the same time, the hand feel and fluffiness of wool and long-staple cotton after dyeing are significantly improved compared with traditional dyeing. The yarn is dry and uniform, and the yarn garments are fluffy, full and elastic.

[0042] (4) The wool / cotton / conductive fiber blended yarn obtained by this invention meets the standard requirements for clothing products in terms of color fastness, pilling, and dimensional stability. Clothing products made from domestically produced textile raw materials have high fabric toughness, good resilience, are not easily deformed after long-term wear, are wear-resistant and durable, and can maintain good appearance and performance even after long-term wear. They have excellent warmth retention and good breathability, can expel moisture from the body, keep the body dry and comfortable, and have good antistatic properties, making them the first choice for clothing. Attached Figure Description

[0043] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0044] Figure 1 This is a flowchart of the preparation method of the wool / long-staple cotton / conductive fiber blended yarn in Embodiment 1 of the present invention;

[0045] Figure 2 The flowcharts are for wool dyeing processes in Embodiment 1 and Comparative Example 1 of the present invention; where a represents the process in Embodiment 1 and b represents the process in Comparative Example 1.

[0046] Figure 3 The following is a flowchart of the dyeing process in long-staple cotton in Comparative Example 1 of the present invention; wherein, a is the process in Example 1 and b is the process in Comparative Example 1. Detailed Implementation

[0047] The product of this invention is a blend of wool, cotton, and conductive fibers, used as yarn for police uniforms and jackets. Due to the dark color of this fabric, ensuring the purity of the finished fabric's color, its colorfastness to washing, sunlight, and abrasion, as well as its resistance to pilling, abrasion, and other performance indicators, has been a persistent technical challenge in the industry.

[0048] This invention provides a method for preparing wool / cotton / conductive fiber blended yarn, comprising the following steps:

[0049] Wool and long-staple cotton are dyed separately, and the dyed wool is then treated with a health-preserving process.

[0050] The wool that has been cured is mixed with long-staple cotton and conductive fibers to produce a blended material.

[0051] The mixture is combed, pinned, and drawn to obtain the drawn product.

[0052] After the product is drawn, it is roving, spinning, winding, doubling, twisting, and steaming to obtain wool / cotton / conductive fiber blended yarn.

[0053] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to specific embodiments and comparative examples.

[0054] Example 1

[0055] A wool / cotton / conductive fiber blended yarn and its preparation method, such as Figure 1 As shown, it includes the following steps:

[0056] I. Raw Material Specifications: The product in this embodiment is a wool / cotton / conductive fiber blended yarn, composed of wool, long-staple cotton, and conductive fiber in a mass ratio of 70:29:1. Specifically, the wool is domestic 66-70S wool with a length of 45 mm and a fineness of 20 μm; the long-staple cotton is Xinjiang long-staple cotton with a fiber length of 36 mm and a fineness of 15 μm; and the conductive fiber is nylon-based conductive fiber with a specification of 3D×51mm.

[0057] II. Preparation methods, such as Figure 1 As shown, it includes the following steps

[0058] 1. The dyeing process specifically includes the following steps:

[0059] The dyeing raw materials are low-temperature lanazine dye, acetic acid 3.5 wt% (adjust pH=4.5), Abaco B 1.5 g / L, Abaco FFA-01 0.5 g / L. The amount of low-temperature lanazine dye is adjusted according to the color depth. Generally, the amount used for light colors is 0.01 wt%, and the amount used for dark colors is 6 wt%.

[0060] At room temperature and pressure, add Abercrombie & FFA (penetrating defoamer), Millerland LTD (low-temperature auxiliary agent), and Abercrombie & B (amphoteric auxiliary agent for leveling and deepening dyeing) in sequence, run for 5 minutes, then add dye and run for 10 minutes; close the vat lid, inject compressed air into the vat and pressurize to 1.5 bar, while simultaneously raising the temperature to 85 ℃ at 1.5 ℃ / min, keep at this temperature for 60 minutes, and then drain; wash with alkaline solution at 80 ℃ (pH 8.0) for 20 minutes, rinse with warm water (50 ℃) for 15 minutes, and then rinse with cold water until clear.

[0061] Bromoacrylamide is used as a low-temperature dye for wool dyeing. By adjusting dyeing parameters such as dyeing temperature, holding time, and heating rate, and using the hydroxyethylated fatty acid ammonium derivative ALBEGLA-B as a low-temperature leveling agent, the wool cuticle layer is fully expanded, facilitating dye penetration. Wool reactive dyes form covalent bonds with the amino or hydroxyl groups on the wool fibers through nucleophilic addition or substitution reactions of their active groups, thus firmly binding to the fibers. This process improves dye absorption while reducing surface dye aggregation on the wool fibers, and enhances color fastness during washing and rubbing.

[0062] Long-staple cotton is dyed using a high-pressure, low-temperature process, such as... Figure 3 As shown in section a, the specific steps include:

[0063] The dyeing materials are Novilone dye (model X), high-concentration penetrant FJ-103 1g / L, sodium sulfate 60 g / L, soda ash 15 g / L, and low-temperature anti-stain soaping agent TF-230HF 2 g / L.

[0064] At room temperature and pressure, add Novallon dye to the dyeing vat and run for 10 min; then add pre-dissolved sodium sulfate in three batches (1 / 3 of the amount added each time), and run for 10 min; close the vat lid, add compressed air to pressurize to 1.5 bar, and simultaneously raise the temperature to 55 ℃ at 2.0 ℃ / min, and keep it at that temperature for 30 min; add soda ash in three batches (1 / 3 of the amount added each time), and keep it at that temperature for 30 min, then drain the water; add low-temperature soaping agent TF-230HF, soap at 80 ℃ for 20 min, rinse with warm water (50 ℃) for 15 min, then rinse with cold water until clear, and add environmentally friendly color-fixing agent Abai Gu ECO for color fixing.

[0065] When dyeing Xinjiang long-staple cotton, the post-treatment temperature was adjusted from 65 ℃ to 55 ℃. After draining the foot water, a second soaping process was carried out using the same method (the low-temperature anti-staining soaping agent is a polyol-grade polymer synthesized from anionic and nonionic surfactants, and the low-temperature anti-staining soaping agent is TF-230HF). At the same time, after multiple experiments, the dosage of hydrophilic softener TF-4865A (3.0 wt%) and environmentally friendly fastness enhancer ECO (2.0 wt%) was selected. According to the pioneer test, all indicators met or exceeded the industry standard (see Table 1).

[0066] 2. Finishing: After the dyed wool is opened by a finishing machine, 2.5% antistatic agent, 1.0% finishing oil, and 12% water are added according to the weight of the raw materials, and the wool is cured for 24 hours. The cured wool is then mixed with long-staple cotton and conductive fibers and finished for use in spinning.

[0067] 3. Combing: The wool, long-staple cotton and conductive fiber mixture after combing is fed into the combing machine. The output weight is 20 g / 5m, the doffer speed is 20 r / min, and the cylinder speed is 260 r / min. The distance between the cylinder and the cover plate is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm and 0.32 mm.

[0068] 4. Pin Comb: Six pins are combined to form a sliver. The specific process and parameters are as follows: First Pin: Select a draft ratio of 6.5, a sliver weight of 18.5 g / 5m, a distance from the pin plate to the front roller of 26 mm, and a machine speed of 35 m / min; Second Pin: Select a draft ratio of 6.5, a sliver weight of 18.5 g / 5m, a distance from the pin plate to the front roller of 26 mm, and a machine speed of 35 m / min.

[0069] 5. Sliver rolling: First rolling: 7 slivers fed in; draft 8.1 times, spacing 25×30 mm, output weight 16 g / 5m; Second rolling: 8 slivers fed in; draft 8.0 times; sliver weight 16 g / 5m; machine speed 80 m / min; Third rolling: 8 slivers fed in; draft 8.0 times; sliver weight 16 g / 5m; machine speed 80 m / min.

[0070] 6. Roving: Select a draft of 6-8.5 times, with an output weight of 0.45 g / m; machine speed of 9.2 m / min; minimize the number of thick and thin rovings to avoid accidental elongation during drafting, increase pressure and reduce speed to reduce yarn breakage and static electricity.

[0071] 7. Spinning: Sirospinning is used to improve yarn smoothness. A draft ratio of 30-35 times and a twist of 680-840 T / M are selected; the spinning speed is 10.8 m / min. Since the length difference between wool and cotton fibers in the roving is relatively large, the yarn spacing is 46×48 mm to improve yarn uniformity.

[0072] 8. Winding speed: 700 m / min; short thick section DS: 2.40, LS: 2.2 cm; long thick section DL: 1.32, LL: 30 cm; thin section D: 25.00, L: 30 cm; long offset branch 12 m, short offset branch 2 m.

[0073] 9. Yarn doubling: Yarn doubling requires controlling the yarn tension and shaping, with a machine speed of 480 m / min.

[0074] 10. Twisting: Spindle speed 5500 r / min, design twist 460T / M, S-twist direction.

[0075] 11. Steaming: High-temperature steaming is used, with a temperature of 65 ℃, a holding time of 30 min, and a pressure of 150 mb.

[0076] 12. Finished product inspection: evenness 16.5%, fineness 0 per kilometer, coarseness 5 per kilometer, neps 18 per kilometer, strength 350 CN, strength 7.2%, twist 4.0%.

[0077] Example 2

[0078] Unlike Example 1, the product of this example is a wool / cotton / conductive fiber blended yarn, which is made of wool, long-staple cotton and conductive fiber in a mass ratio of 75:24:1. Specifically, the wool is domestic 66-70S wool with a length of 50mm and a fineness of 19.5 μm; the long-staple cotton is Xinjiang long-staple cotton with a fiber length of 35mm and a fineness of 14 μm; and the conductive fiber is nylon-based conductive fiber with a specification of 3D×51mm.

[0079] 1. Dyeing process:

[0080] The wool is dyed using a high-pressure, low-temperature process, which includes the following steps:

[0081] The dyeing raw materials are low-temperature lanazine dye, acetic acid 3 wt% (adjust pH=4.5), Abaco B 1.0 g / L, Abaco FFA-01 0.5 g / L. The amount of low-temperature lanazine dye used is adjusted according to the color depth. Generally, the amount used for light colors is 0.01 wt%, and the amount used for dark colors is 6 wt%.

[0082] At room temperature and pressure, add Abercrombie & FFA (penetrating defoamer), Millerland LTD (low-temperature auxiliary agent), and Abercrombie & B (amphoteric auxiliary agent for leveling and deepening dyeing) in sequence, run for 5 minutes, then add dye and run for 10 minutes; close the vat lid, inject compressed air into the vat and pressurize to 1.5 bar, while simultaneously raising the temperature to 85 ℃ at 1.0 ℃ / min, keep at this temperature for 60 minutes, and then drain; wash with alkaline solution at 85 ℃ (pH 8.0) for 10 minutes, rinse with warm water (50 ℃) for 10 minutes, and then rinse with cold water until clear.

[0083] Long-staple cotton is dyed using a high-pressure, low-temperature process, which includes the following steps:

[0084] The dyeing raw materials are Novilone dye (model X), high-concentration penetrant FJ-103 at 1g / L, sodium sulfate at 20g / L, soda ash at 15g / L, and low-temperature anti-stain soaping agent TF-230HF at 2g / L.

[0085] At room temperature and pressure, add Novallon dye to the dyeing vat and run for 10 min; then add pre-dissolved sodium sulfate in three batches (1 / 3 of the amount added each time) and run for 10 min; close the vat lid, pressurize the vat with compressed air to 1.7 bar, and simultaneously raise the temperature to 50 ℃ at 2.0 ℃ / min and hold for 20 min; add soda ash in three batches (1 / 3 of the amount added each time) and hold for 340 min, then drain; add low-temperature soaping agent TF-230HF, soap at 80 ℃ for 20 min, rinse with warm water (50 ℃) for 10 min, then rinse with cold water until clear, and add environmentally friendly color-fixing agent Abai Gu ECO for color fixing.

[0086] When dyeing Xinjiang long-staple cotton, the post-treatment temperature was adjusted from 65 ℃ to 50 ℃. After draining the foot water, a second soaping process was carried out using the same method (the low-temperature anti-staining soaping agent is a polyol-grade polymer synthesized from anionic and nonionic surfactants, and the low-temperature anti-staining soaping agent is TF-230HF). At the same time, after multiple experiments, the hydrophilic softener TF-4865A (3.0 wt%) and the environmentally friendly fastness enhancer ECO (2.0 wt%) were selected.

[0087] 2. Finishing: After the dyed wool is opened by a finishing machine, 2% antistatic agent, 0.5% finishing oil, and 10% water are added according to the weight of the raw materials, and the wool is cured for 48 hours. The cured wool is then mixed with long-staple cotton and conductive fibers and finished for use in spinning.

[0088] 3. Combing: The wool, long-staple cotton and conductive fiber mixture after combing is fed into the combing machine. The output weight is 25 g / 5m, the doffer speed is 25 r / min, and the cylinder speed is 250 r / min. The distance between the cylinder and the cover plate is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm and 0.32 mm.

[0089] 4. Needle comb: Six combs are combined and made into strips. The specific process and parameters are as follows:

[0090] First needle: Select a draft ratio of 6.0, a strip quantity of 20 g / 5m, a needle plate to front roller distance of 25 mm, and a machine speed of 40 m / min; Second needle: Select a draft ratio of 6.0, a strip quantity of 20 g / 5m, a needle plate to front roller distance of 25 mm, and a machine speed of 40 m / min.

[0091] 5. Sliver rolling: First rolling: 8 slivers fed in; draft 8.5 times, spacing 25×30 mm, output weight 20 g / 5m; Second rolling: 7 slivers fed in; draft 8.5 times, sliver weight 20 g / 5m, machine speed 85 m / min; Third rolling: 7 slivers fed in; draft 8.5 times, sliver weight 20 g / 5m, machine speed 85 m / min.

[0092] 6. Roving: Select a draft of 8.5 times, sliver weight of 0.5 g / m; machine speed of 9.5 m / min; minimize the number of thick and thin rovings to avoid accidental elongation during drafting, increase pressure and reduce speed to reduce breakage and static electricity.

[0093] 7. Spinning: Sirospun yarn is used to improve yarn smoothness. A draft ratio of 35 and a twist of 840 T / M are selected; the spinning speed is 10.8 m / min. Since the length difference between wool and cotton fibers in the roving is relatively large, the yarn spacing is 46×48 mm to improve yarn uniformity.

[0094] 8. Winding: Speed ​​750 m / min, short thick section DS: 2.50, LS: 2.5 cm, long thick section DL: 1.35, LL: 35 cm. Detail D: 30.00, L: 35 cm. Long offset +13%, 12 m, short offset +20%, 2 m.

[0095] 9. Yarn doubling: Yarn doubling requires controlling the yarn tension and shaping, with a machine speed of 500 m / min.

[0096] 10. Twisting: Spindle speed 6000 r / min, design twist 480 T / M, S twist direction.

[0097] 11. Steaming: High-temperature steaming is used, with a temperature of 70 ℃, a holding time of 35 min, and a pressure of 180 mb.

[0098] Example 3

[0099] Unlike Example 1, the product of this example is a wool / cotton / conductive fiber blended yarn, which is made of wool, long-staple cotton and conductive fiber in a mass ratio of 73:25:2. Specifically, the wool is domestic 66-70S wool with a length of 40mm and a fineness of 21.3 μm; the long-staple cotton is Xinjiang long-staple cotton with a fiber length of 39mm and a fineness of 16 μm; and the conductive fiber is nylon-based conductive fiber with a specification of 3D×51mm.

[0100] 1. Dyeing process:

[0101] The wool is dyed using a high-pressure, low-temperature process, which includes the following steps:

[0102] The dyeing raw materials are low-temperature Lanazon dye, acetic acid 5 wt% (adjusting pH=4), Abercrombie & FLA B 1.2 g / L, and Abercrombie & FLA-01 0.6 g / L. The amount of low-temperature Lanazon dye is adjusted according to the color depth, generally 0.01 wt% for light colors and 8 wt% for dark colors. Under normal temperature and pressure, Abercrombie & FLA (penetrating defoamer), Millerland LTD (low-temperature auxiliary agent), and Abercrombie & FLA B (amphotericidal auxiliary agent for leveling and deepening) are added sequentially and run for 10 min. Then, the dye is added and run for 15 min. The dyeing tank is closed, and compressed air is injected into the tank to pressurize it to 1.7 bar. At the same time, the temperature is increased to 80 ℃ at 1.5 ℃ / min and kept at this temperature for 40 min before draining. Alkali washing (pH 8.0) is performed at 80 ℃ for 20 min, followed by rinsing with warm water (50 ℃) for 20 min, and then rinsing with cold water until clear.

[0103] Long-staple cotton is dyed using a high-pressure, low-temperature process, which includes the following steps:

[0104] The dyeing raw materials are Novilone dye, high-concentration penetrant FJ-103 at 1 g / L, sodium sulfate at 80 g / L, soda ash at 20 g / L, and low-temperature anti-stain soaping agent TF-230HF at 3 g / L. At room temperature and pressure, add Novallon dye to the dyeing vat and run for 15 minutes; then add pre-dissolved sodium sulfate in three batches (1 / 3 of the amount added each time) and run for 15 minutes; close the vat lid, pressurize the vat with compressed air to 1.6 bar, and simultaneously raise the temperature to 46 ℃ at 2.0 ℃ / min and hold for 15 minutes; add soda ash in three batches (1 / 3 of the amount added each time) and hold for 350 minutes, then drain; add low-temperature soaping agent TF-230HF, soap at 80 ℃ for 15 minutes, rinse with warm water (50 ℃) for 15 minutes, then rinse with cold water until clear, and add environmentally friendly color-fixing agent Abai Gu ECO for color fixing.

[0105] When dyeing Xinjiang long-staple cotton, the post-treatment temperature was adjusted from 65 ℃ to 50 ℃. After draining the foot water, a second soaping process was carried out using the same method (the low-temperature anti-staining soaping agent is a polyol-grade polymer synthesized from anionic and nonionic surfactants, and the low-temperature anti-staining soaping agent is TF-230HF). At the same time, after multiple experiments, the hydrophilic softener TF-4865A (3.0 wt%) and the environmentally friendly fastness enhancer ECO (2.0 wt%) were selected.

[0106] 2. Finishing: After the dyed wool is opened by a finishing machine, 2% antistatic agent, 0.5% finishing oil, and 10% water are added according to the weight of the raw materials, and the wool is cured for 30 hours. The cured wool is then mixed with long-staple cotton and conductive fibers for finishing, and is ready for spinning.

[0107] 3. Combing: The wool, long-staple cotton and conductive fiber mixture after combing is fed into the combing machine. The output weight is 22 g / 5m, the doffer speed is 22 r / min, and the cylinder speed is 260 r / min. The distance between the cylinder and the cover plate is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm and 0.32 mm.

[0108] 4. Needle comb: Seven combs are combined and made into strips. The specific process and parameters are as follows:

[0109] First needle: Select a draft ratio of 7.0, a strip quantity of 19 g / 5m, a needle plate to front roller distance of 26 mm, and a machine speed of 38 m / min; Second needle: Select a draft ratio of 7.0, a strip quantity of 19 g / 5m, a needle plate to front roller distance of 26 mm, and a machine speed of 38 m / min.

[0110] 5. Sliver rolling: First rolling: 7 slivers fed in; draft 8.2 times, spacing 25×30 mm, output weight 18 g / 5m; Second rolling: 8 slivers fed in; draft 8.2 times; sliver weight 18 g / 5m; machine speed 82 m / min; Third rolling: 7 slivers fed in; draft 8.2 times; sliver weight 18 g / 5m; machine speed 82 m / min.

[0111] 6. Roving: Select a draft of 7.5 times, sliver weight of 0.4 g / m; machine speed of 9.2 m / min; minimize the number of thick and thin rovings to avoid accidental elongation during drafting, increase pressure and reduce speed to reduce breakage and static electricity.

[0112] 7. Spinning: Sirospun yarn is used to improve yarn smoothness. A draft ratio of 33 and a twist of 740 T / M are selected; the spinning speed is 11 m / min. Since the length difference between wool and cotton fibers in the roving is relatively large, the yarn spacing is 46×48 mm to improve yarn uniformity.

[0113] 8. Winding: Speed ​​750 m / min, short thick section DS: 2.40, LS: 2.3 cm, long thick section DL: 1.32, LL: 32 cm. Detail D: 28.00, L: 32 cm. Long offset -13%, 12 m, short offset -20%, 2 m.

[0114] 9. Yarn doubling: Yarn doubling requires controlling the yarn tension and shaping, with a machine speed of 500 m / min.

[0115] 10. Twisting: Spindle speed 5000 r / min, design twist 480 T / M, S twist direction.

[0116] 11. Steaming: High-temperature steaming is used, with a temperature of 60 ℃, a holding time of 25 min, and a pressure of 150 mb.

[0117] Comparative Example 1

[0118] A wool / cotton / conductive fiber blended yarn and its preparation method

[0119] Unlike Example 1, the dyeing process in this preparation method employs existing dyeing techniques, wherein the wool dyeing process is as follows: Figure 2 As shown in b, the specific steps include:

[0120] The dyeing materials are low-temperature lanazine dye, 3.5 g / L acetic acid (adjusted to pH 4.5), 1.5 g / L Abaco B, and 0.5 g / L Abaco FFA-01. The amount of low-temperature lanazine dye used is adjusted according to the color depth; generally, the amount used for light colors is 0.01 wt%, and the amount used for dark colors is 6 wt%. Under normal temperature and pressure, the dye and auxiliaries are added to the dyeing vat sequentially and run for 15 min; the temperature is increased to 98 ℃ at 1.5 ℃ / min, held for 60 min, and then drained; alkaline washing at 80 ℃ (adjusting pH to 8.0) is performed for 20 min, followed by rinsing with warm water (50 ℃) for 15 min, and then rinsing with cold water until clear.

[0121] The dyeing process of long-staple cotton is as follows Figure 3 As shown in b, the specific steps include:

[0122] The dyeing raw materials were Novilone dye, high-concentration penetrant FJ-103 (1 g / L), sodium sulfate (60.0 g / L), soda ash (15.0 g / L), and conventional soaping agent (TF-230HF) (2.0 g / L). At room temperature and pressure, Novilone dye and auxiliaries were added sequentially to the dyeing vat and run for 10 min. Then, pre-dissolved sodium sulfate was added in portions (1 / 3 of the amount each time), and the vat was run for 10 min. Compressed air was added to the vat to pressurize it, while the temperature was increased to 55 ℃ at 2.0 ℃ / min and maintained for 30 min. Soda ash was added in three portions (1 / 3 of the amount each time), and the vat was maintained for 35 min before draining. Then, the vat was soaped at 98 ℃ for 20 min, rinsed with warm water (50 ℃) for 15 min, and rinsed with cold water until clear.

[0123] Comparative Example 2

[0124] Unlike Example 1, this example uses only 70% wool and 30% long-staple cotton, while the other preparation methods are the same as in Example 1.

[0125] Comparative Example 3

[0126] Unlike Example 1, only 50% wool and 50% long-staple cotton were used, while the other preparation methods were the same as in Example 1.

[0127] Comparative Example 4

[0128] Unlike Example 1, the raw material mixing method is changed from material mixing to strip mixing. For details, please refer to the strip mixing process in patent CN118029030A. The specific strip mixing process is as follows:

[0129] 1. Wool combing: Dry weight of sliver is 20 g / 5m, doffer speed is 20 r / min, cylinder speed is 200 r / min; the five-point spacing between cylinder and flats is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm; the spacing between licker-in roller and feed plate is 0.3 mm.

[0130] 2. Carding of long-staple cotton and conductive fiber blend: dry weight of sliver is 20g / 5m, doffer speed is 20r / min, cylinder speed is 250r / min; the five-point spacing between cylinder and flats is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm; the spacing between licker-in roller and feed plate is 0.3 mm.

[0131] 3. Wool combing: The draft ratio of the first comb is 6-7 times, the dry weight of the sliver is 18.0 g / 5m, the distance between the comb plate and the front roller is 27 mm, and the machine speed is 35m / min; the draft ratio of the second comb is 6 times, the dry weight of the sliver is 18.0 g / 5m, the distance between the comb plate and the front roller is 27-30 mm, and the machine speed is 35m / min.

[0132] 4. Long-staple cotton and conductive fiber blend comb: The draft ratio of the first comb is 6 times, the dry weight of the sliver is 18.0 g / 5m, the distance between the comb plate and the front roller is 25 mm, and the machine speed is 40 m / min; the draft ratio of the second comb is 6 times, the dry weight of the sliver is 18.0 g / 5m, the distance between the comb plate and the front roller is 25 mm, and the machine speed is 40 m / min.

[0133] 5. Sliver Consolidation: First Consolidation: 8 slivers (6 A slivers + 2 B slivers) are fed in, with a draft ratio of 8.0, a spacing of 25×30 mm, an output weight of 18 g / 5m, and a machine speed of 80 m / min; Second Consolidation: 7 slivers are fed in, with a draft ratio of 8.0, a spacing of 25×30 mm, an output weight of 18 g / 5m, and a machine speed of 80 m / min; Third Consolidation: 7 slivers are fed in, with a draft ratio of 8.0, a spacing of 25×30 mm, an output weight of 18 g / 5m, and a machine speed of 80 m / min.

[0134] 6. Roving: Draft ratio is 6 times, sliver weight is 0.4 g / m; machine speed is 9.0 m / min.

[0135] 7. Spinning: Siro spinning is adopted, with a draft ratio of 30 and a twist of 680T / M; machine speed is 10.0m / min, and the yarn spacing is (44-47)×(49-53)mm.

[0136] 8. Winding speed: 650 m / min, short thick section is 2.40 cm long, long thick section is 2.0 cm long, long thick section is 1.3 cm long, long thick section is 30 cm long, thin section is 25.0 cm long, thin section is 30 cm long, long misalignment is -13% and 12 m, short misalignment is -20% and 2 m long.

[0137] 9. Lane change: Speed ​​450 m / min.

[0138] 10. Twisting: Spindle speed 5000 r / min, design twist 450T / M, S twist direction.

[0139] 11. Steaming: Temperature 60 ℃, holding time 25 min, pressure 120 mb.

[0140] Performance testing

[0141] 1. Dyeing process effect

[0142] The fastness results of three samples obtained from the two dyeing processes of Example 1 and Comparative Example 1 are compared in Table 1. The test methods for dry rubbing fastness, washing fastness, light fastness, and perspiration fastness are based on GB / T 3920-2008, GB / T 3921-2008, GB / T 8427-2019, and GB / T 3922-2013, respectively. The fastness grades for dry rubbing fastness, washing fastness, light fastness, and perspiration fastness are all expressed numerically, with 1 indicating the worst result and 5 indicating the best result.

[0143] Table 1. Effects of dyeing process

[0144]

[0145] As can be seen from Table 1, the dyeing fastness of all three aspects of this method is significantly improved compared to the original conventional process. This is because in the dyeing process of wool and long-staple cotton of this invention, compressed air is added to the dyeing vat, increasing the pressure by 1.5 bar compared to the ambient temperature and pressure dyeing vat in Comparative Example 1. The increased pressure accelerates the opening of the wool scale layer on top of the effect of temperature, allowing the cotton fibers to fully expand and enabling the dye molecules to fully bond with the covalent bonds of wool and cotton fibers, thereby increasing the dyeing rate and further improving the fastness. By selecting low-temperature dyes (α-bromoacrylamide, Lanners wool reactive dye) and auxiliaries (low-temperature soaping agent TF-230HF), the dyeing temperature and the soaping temperature of long-staple cotton are reduced, saving steam consumption and energy, which is in line with green and clean production.

[0146] 2. The performance of the fabric after the yarn is made into clothing.

[0147] The pilling test is graded according to GB / T 4802.3-2008 "Textiles - Determination of pilling properties of fabrics - Part 3: Pilling box method".

[0148] Rating conditions: Rating should be conducted under a standard light source box (such as a D65 light source) or natural light, with uniform lighting and avoidance of external interference. During rating, the sample should be compared with a standard sample, and the observation angle should be 45°±10°.

[0149] Rating criteria: The visual description comparison method is used to compare the tested samples with standard samples to evaluate the pilling level.

[0150] Grade Classification: Typically divided into 5 levels (Level 1 is the worst, Level 5 is the best): Level 5: No surface change, almost no pilling. Level 4: Slight pilling or a small amount of pilling (fine fuzz). Level 3: Moderate pilling, fuzz is noticeable but of medium density. Level 2: Severe pilling, fuzz is dense and large. Level 1: Extremely severe pilling, surface covered with a large number of fuzz or damaged areas.

[0151] Table 2. Wearability of fabrics made from yarn

[0152]

[0153] As shown in Table 2, Example 1 used a low-temperature dyeing auxiliary agent to replace the original auxiliary agent, which lowered the dyeing temperature and ensured that the pH value of the dye bath was between 4 and 5, which is basically consistent with the isoelectric point of wool fibers. This reduced fiber damage and improved pilling and fuzzing by 1-2 grades, maximizing the hand feel and condition of the wool and further improving the performance of the fabric made from this type of yarn. The reason for the performance difference between Example 1 and Comparative Example 1 is that the low-temperature dyeing technology reduced fiber damage during the dyeing process, ensured fiber length, and reduced the generation of short fibers during combing, thereby reducing surface fuzz and improving pilling and fuzzing effects.

[0154] Table 3 shows the properties of fabrics made from the raw materials of Example 1 and Comparative Example 2.

[0155] Table 3 Performance of Example 1 and Comparative Example 2

[0156]

[0157] As shown in Table 3, removing 1% of the conductive fibers from the raw materials significantly reduces the conductivity. Clothing made from the fabric produced by this invention is designed for groups with a wide range of motion. In Example 1, adding conductive fibers effectively eliminates static electricity. In Comparative Example 2, after removing the conductive fibers, the wool fibers easily generate static electricity during friction, and there is a lack of effective static electricity leakage pathways, leading to static electricity accumulation. The decrease in antistatic properties can cause discomfort such as electric shocks and clothing adhesion during wear.

[0158] Table 4 shows the properties of fabrics made from the raw materials of Comparative Example 1 and Comparative Example 3.

[0159] Table 4 shows the properties of fabrics made from the raw materials of Comparative Example 1 and Comparative Example 3.

[0160]

[0161] Because wool fibers have large crimps and excellent elasticity, they can deform and quickly recover under external force. They have a fluffy and soft feel and good warmth retention. Reducing the wool content decreases the bulk of the yarn and fabric, making them feel stiffer and less warm; the elasticity and resilience of the yarn also decrease significantly. Reduced elasticity may cause the yarn to wrinkle easily during wear and is difficult to restore its smoothness, resulting in poor dimensional stability. Compared to Example 1, Comparative Example 3 changed the blending ratio of wool and long-staple cotton, reducing the wool content and increasing the long-staple cotton content. Table 4 shows that Example 1, compared to Comparative Example 3, shows improvements in yarn strength, elongation, and fluffiness. Its electrical conductivity also increases with increasing wool content.

[0162] The raw material mixing method in Example 1 was changed from material mixing to the strip mixing process of Comparative Example 4, which altered the mixing and arrangement of fibers within the yarn. The performance of Examples 1 and Comparative Example 4 is shown in Table 5.

[0163] Table 5 Performance of Example 1 and Comparative Example 4

[0164]

[0165] As shown in Table 5, the yarn properties, evenness, and strength of Comparative Example 4 were all lower than those of Example 1. However, Example 1, which used a blending method of raw wool, combed long-staple cotton slivers, and conductive fibers, met the standard requirements for clothing products in terms of property stability.

[0166] 3. Comparison of yarn properties with standard data

[0167] Table 6 shows a comparison of yarn properties with standard data in Example 1, including relaxation dimensional change, felting dimensional change, color fastness to washing (grade), color fastness to rubbing (grade), color fastness to perspiration (grade), color fastness to water (grade), and color fastness to light (grade).

[0168] Table 6 Comparison of yarn properties with standard data in Example 1

[0169]

[0170] As can be seen from the comparison in Table 6, Example 1 of this invention uses a blend of 66S domestic wool, Xinjiang long-staple cotton combed slivers, and conductive fiber-spun Sirospun yarn, which meets the standard requirements for clothing products in terms of color fastness, pilling, and dimensional stability. Clothing products made from domestically produced textile raw materials have high fabric toughness, good resilience, are not easily deformed after prolonged wear, are wear-resistant and durable, and maintain good appearance and performance even after long-term wear. They also have excellent warmth retention and good breathability, allowing moisture to escape from the body, keeping the body dry and comfortable, and have good anti-static properties, making them a top choice for clothing.

[0171] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for preparing a wool / cotton / conductive fiber blended yarn, characterized in that, Includes the following steps: Wool and long-staple cotton are dyed separately, and the dyed wool is then treated with a health-preserving process. The wool that has been cured is mixed with long-staple cotton and conductive fibers to produce a blended material. The mixture is combed, pinned, and drawn to obtain the drawn product. After the product is drawn, it is roving, spinning, winding, doubling, twisting, and steaming to obtain wool / cotton / conductive fiber blended yarn. The wool has an average length of 45-50 mm and an average fineness of 19.5-21.3 μm. The average length of the long-staple cotton fibers is 35-39 mm, and the average fineness is 14-16 μm. The dyeing process for wool is as follows: Add the auxiliaries and dyes to the dyeing vat in sequence and run the vat; close the vat lid, inject air into the vat to pressurize it, and at the same time raise the temperature to 80-85℃ at 1-1.5℃ / min, keep it at this temperature for 40-60 min, and then drain the water; add alkali to adjust the pH to 8.0-8.5, rinse with warm water for 10-20 min, and then rinse with water again. The dyeing process for long-staple cotton is as follows: Add dye to the dyeing vat and run it; then add pre-dissolved sodium sulfate in batches; close the vat lid, inject air into the vat to pressurize it, and at the same time raise the temperature to 50-55℃ at 1.0-2.0℃ / min, keep it at that temperature for 20-30 min, add soda ash in batches, keep it at that temperature for 30-40 min, and then drain the water; add low-temperature soaping agent, soap and wash for 20-30 min, rinse with warm water for 10-20 min, then rinse with cold water, and add environmentally friendly color-fixing agent; During the dyeing process of wool and long-staple cotton, air is injected and pressurized to a pressure of 1.5-1.7 bar, and the temperature of warm water is 45-50℃.

2. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that, The wool, long-staple cotton, and conductive fiber are mixed in a mass ratio of (70-75):(24-30):(1-2); The conductive fiber is a nylon-based conductive fiber.

3. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that, The conditioning process involves adding wool oil, antistatic agent, and water to the dyed wool and conditioning it for 24-48 hours. The dry weight of the combed sliver is 20 g / 5m-25 g / 5m, the doffer speed is 20 r / min-25 r / min, and the cylinder speed is 250 r / min-280 r / min; the five-point spacing between the cylinder and the flat plate is 0.32 mm, 0.28 mm, 0.28 mm, 0.28 mm, and 0.32 mm; and the spacing between the licker-in roller and the feed plate is 0.3-0.5 mm.

4. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that, The draw ratio of the head needles in the comb is 6-7 times, the dry weight of the output sliver is 18.0 g / 5m-20.0 g / 5m, the distance between the needle plate and the front roller is 25-26 mm, and the machine speed is 35-40 m / min. The draft ratio of the two needles is 6-7 times, the dry weight of the sliver is 18.0 g / 5m-20.0 g / 5m, the distance between the needle plate and the front roller is 25-26 mm, and the machine speed is 35-40 m / min.

5. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that, The drawing process involves feeding 6-8 slivers together, with a draw ratio of 8.0-8.5, a spacing of 25×30mm, an output weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85 m / min. Two feeds are fed into the machine in groups of 7-8, with a draw ratio of 8.0-8.5 times, an output weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85m / min; Three feeds are fed into a batch of 7-8 strands, with a draw ratio of 8.0-8.5 times, an output weight of 15 g / 5m-20 g / 5m, and a machine speed of 80-85m / min.

6. The method for preparing wool / cotton / conductive fiber blended yarn according to claim 1, characterized in that, The roving has a draft ratio of 6-8.5 times and an output weight of 0.4-0.5 g / m; the machine speed is 9.0-9.5 m / min. The yarn is spun using Sirospun yarn, with a draft ratio of 30-35 times and a twist of 680-840 T / M; the machine speed is 10.0-11.0 m / min, and the yarn spacing is (44-47)×(49-53) mm. The winding speed is 650-750 m / min, the short thick section is 2.40-2.50 cm long, the long thick section is 1.3-1.35 cm long, the long thick section is 30-35 cm long, the thin section is 25.0-30.0 cm long, the thin section is 30-35 cm long, the long offset is -13% to +13% and 12 m, and the short offset is -20% to +20% and 2 m. The speed at which the vehicle merges into the lane is 450-500 m / min; The spindle speed of the twisted yarn is 5000-6000 r / min, the designed twist is 450-480 T / M, and the twist direction is S. The temperature of the steamed yarn is 60-70 ℃, the holding time is 25-35 min, and the pressure is 120-180 mb.

7. A wool / cotton / conductive fiber blended yarn prepared by the method of any one of claims 1-6.

8. The application of the wool / cotton / conductive fiber blended yarn of claim 7 in clothing.

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