A worsted knitwear spinning process for preventing waviness

Abstract

The application relates to the wool spinning field and particularly discloses a wool worsted knitting yarn spinning process for preventing corrugation, which adopts merino as raw material and comprises the following steps: mixing the raw material once, combing once; gilling; roving, spinning, bobbin winding, and doubling to obtain knitting yarn; the draft multiple of the roving is 9-11 times, the draft multiple of the spinning is 15-17 times, and the spinning gauge is 2.1-2.5 mm. The yarn prepared through the wool worsted knitting yarn spinning process for preventing corrugation is smooth and flat, has no corrugation, and the yarn steaming step is omitted, so that the process is simplified.

Description

Technical Field

[0001] This application relates to the field of wool textiles, and more specifically, it relates to a spinning process for worsted wool knitting to prevent wavy patterns. Background Technology

[0002] A major bottleneck in existing wool spinning technology is the difference in friction coefficients between fibers during the production process of worsted wool yarn. As the fibers are processed into yarn, repeated stress and friction lead to localized stress, internal stress imbalance, and fatigue stress that is difficult to release, or even fiber breakage due to low strength. This results in stress concentration and overall stress imbalance, causing fibers to bear more stress in certain directions, resulting in a wavy and uneven fabric. Wool is malleable, so its internal stress can be quickly released under humid and hot conditions. Current processes use steaming to shape and release internal stress; however, steaming consumes a large amount of energy. To improve yarn quality and respond to the national call for energy conservation and emission reduction, it is an urgent problem to be solved to obtain a smooth, wavy fabric without steaming, based on existing resources and the need to prevent wavy fabric formation. Summary of the Invention

[0003] To address the problems of wavy fabrics and high energy consumption in steaming yarn during wool spinning, this application provides a spinning process for preventing wavy fabrics in worsted wool knitting. The technical solution is as follows: The process includes the following steps: S1: Mixing the raw materials once, combing once to obtain a combed wool sliver, and then combing; S2: roving, spinning, winding, and twisting to obtain knitted yarn; the draft ratio of the roving is 9-11 times, the draft ratio of the spinning yarn is 15-17 times, and the yarn spacing is 2.1-2.5 mm.

[0004] By adopting the above technical solution, this application adjusts the draft ratio from the conventional 20 times or more for fine yarn to the aforementioned range, thereby reducing the internal stress of the yarn. It also adjusts the appropriate draft ratio for roving, working in tandem to achieve effective control of the yarn and prevent wavy patterns. The rollers operate smoothly without generating mechanical waves, ensuring no yarn breaks, producing even and non-loose yarn, reducing the diffusion of floating fibers, increasing density, and resulting in uniform quality. The yarn is reasonably stretched and evenly arranged.

[0005] In one specific feasible implementation, the roller pressure combination for the spinning process is: rear roller 25doN: middle roller 15doN: front roller 20doN.

[0006] By adopting the above technical solution, the pressure combination of conventional rollers is adjusted. Through the adjustment of the above parameters, the rollers have better control over the yarn, ensuring smooth drafting. At the same time, it helps to reduce the load on the equipment, reduce friction between yarns, further reduce internal stress, and prevent the generation of ripples.

[0007] In one specific feasible implementation, the yarn is placed in a balancing room for 23-35 hours before spinning, at a temperature of 28-32°C and a humidity of 78-82%.

[0008] By adopting the above technical solution, the yarn stress is released smoothly in one go, and the resulting roving is more uniform and stable, making the subsequent tensile stress more uniform.

[0009] In one specific feasible implementation, the yarn is placed in a balancing room for 5-7 hours before winding, at a temperature of 28-32°C and a humidity of 78-82%.

[0010] By adopting the above technical solution, the internal stress of the yarn is released a second time before winding, and the yarn is released smoothly by controlling the balance condition parameters.

[0011] In one specific feasible implementation, the yarn is placed in a balance room for 5-7 hours before being doubled, at a temperature of 28-32°C and a humidity of 78-82%.

[0012] By adopting the above technical solution, the yarn undergoes another release before doubling, further releasing the internal stress of the yarn. Through three releases before spinning, winding, and doubling, and by adjusting the reasonable balancing time, temperature, and humidity, the internal stress during the spinning process is smoothly and fully released. This application reduces friction and reasonably releases stress by setting the balancing process, adjusting the drafting process parameters, and adjusting the combination of roller pressure during the spinning process. The final yarn fabric is less prone to ripples, and the steaming step is eliminated, resulting in energy saving and emission reduction.

[0013] In one specific feasible implementation, the raw material includes Merino wool.

[0014] By adopting the above technical solutions, Merino wool fibers are fine and long, which further improves the uniformity of the yarn. The wool in the yarn is evenly arranged, which further reduces the imbalance of local stress. The cohesion is strong and it is not easy to slip off, which further reduces the imbalance of internal stress.

[0015] In one specific feasible implementation, wool undergoes a shrink-proofing treatment, the steps of which include: impregnation, chlorination, dechlorination, washing, resin finishing, and drying to obtain shrink-proofed wool.

[0016] By adopting the above technical solution, the scales on the surface of wool are eliminated. When the fiber is subjected to external force, the stress generated by the fiber anisotropy is greatly reduced. At the same time, after the wool is treated with resin, the resin is a high molecular weight compound that fills the local damage of the wool and forms a mesh protective film on the surface of the fiber. The resulting anti-shrink wool is more uniform, further reducing the accumulation of stress. The resulting anti-shrink wool has a soft and smooth feel, further reducing the stress accumulated by the fiber due to friction.

[0017] In one specific feasible implementation, ultrafine silver particles are also added to the resin.

[0018] By adopting the above technical solution, the ultrafine silver particles have a smaller particle size and better conductivity, which reduces the amount of antistatic agent required in the subsequent process. They also have an antibacterial effect. More importantly, the silver particles are spherical in shape. When added to the resin film, the internal stress is reduced. When the fiber is subjected to external force, the stress is dispersed through the spherical silver particles, further reducing the internal stress.

[0019] In one specific feasible implementation, the resin is a cationic resin.

[0020] By adopting the above technical solution and using cationic resin, the extensibility of the resin on negatively charged ionic groups is further improved, thereby enhancing the smoothness and uniformity of the yarn.

[0021] In one specific implementation scheme, the wool is treated with wool oil after shrinkage prevention treatment, and the mass ratio of the wool oil is 10:1:1 for water: antistatic agent: wool oil.

[0022] By adopting the above technical solutions, the wool treated with wool oil is smoother and softer, reducing friction between fibers and between fibers and guide rollers. This further reduces stress imbalance caused by friction and improves fiber bundle cohesion, further reducing internal stress imbalance within the fibers. The fibers exhibit good lubrication and antistatic properties, and the low friction between fibers further reduces internal stress. Furthermore, reducing the concentration of wool oil further reduces friction between fibers, thus minimizing internal stress.

[0023] In summary, this application has the following beneficial effects: 1. This application reduces friction and reasonably releases stress by setting the balance process and adjusting the drafting process parameters, and adjusting the combination of roller pressure in the spinning process. The final yarn fabric is less prone to ripples, and the steaming step is eliminated, thus saving energy and reducing emissions.

[0024] 2. Because the wool used in this application undergoes anti-shrinkage treatment, the strength of the resulting anti-shrinkage wool is increased, the scales are eliminated, and the stress generated by anisotropy is greatly reduced. Simultaneously, after resin finishing, the resulting anti-shrinkage wool is more uniform, further reducing stress accumulation. The resulting anti-shrinkage wool has a soft and smooth feel, further reducing the stress accumulated in the fibers due to friction. The use of cationic resin further enhances the resin's extensibility on negatively charged ionized groups. The addition of ultrafine silver particles to the resin further reduces and disperses stress, resulting in a more uniform and smooth yarn. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the embodiments. The Merino wool in the preparation examples, embodiments and comparative examples is the Merino wool of Nanjing Baiming Wool. The Merino wool in Examples 1-8 is untreated. Unless otherwise specified, the experimental reagents in the preparation examples, embodiments and comparative examples are all commercially available brands or obtained through conventional preparation processes.

[0026] Preparation Example Preparation of shrink-resistant wool Preparation Example 1 S1: Soaking: Immerse the Merino wool in a hydrochloric acid solution with a pH of 3 for 10 minutes; S2: Chlorination: Add 3% sodium hypochlorite (by mass) of hydrochloric acid aqueous solution and react for 15 min; S3: Dechlorination: Add sodium carbonate (5% by mass) and sodium sulfite (5% by mass) of hydrochloric acid-sodium hypochlorite aqueous solution, react at 40℃ for 30 min, and then add calcium carbonate to adjust the pH to 7. S4: Cleaning: Rinse 3 times with pure water; S5: Resin Finishing: Add 0.5% by mass of ultrafine silver particles to a 3% cationic waterborne polyurethane resin (TY-716) aqueous solution, stir evenly, add wool that has been washed with pure water at a temperature of 40℃, and finish the wool.

[0027] S6: Drying: Dry the resin-treated wool at 40℃ to obtain resin-treated wool.

[0028] Preparation Example 2 S1: Soaking: Immerse the Merino wool in a hydrochloric acid solution with a pH of 3 for 10 minutes; S2: Chlorination: Add 3% sodium hypochlorite (by mass) of hydrochloric acid aqueous solution and react for 15 min; S3: Dechlorination: Add sodium carbonate (5% by mass) and sodium sulfite (5% by mass) of hydrochloric acid-sodium hypochlorite aqueous solution, react at 40℃ for 30 min, and then add calcium carbonate to adjust the pH to 7. S4: Cleaning: Rinse 3 times with pure water; S5: Resin Finishing: The wool, which has been washed with pure water, is immersed in a 3% cationic waterborne polyurethane resin (TY-716) aqueous solution at a water temperature of 40℃ to finish the wool.

[0029] S6: Drying: Dry the resin-treated wool at 40℃ to obtain resin-treated wool.

[0030] Preparation Example 3 S1: Soaking: Immerse the Merino wool in a hydrochloric acid solution with a pH of 3 for 10 minutes; S2: Chlorination: Add 3% sodium hypochlorite (by mass) of hydrochloric acid aqueous solution and react for 15 min; S3: Dechlorination: Add sodium carbonate (5% by mass) and sodium sulfite (5% by mass) of hydrochloric acid-sodium hypochlorite aqueous solution, react at 40℃ for 30 min, and then add calcium carbonate to adjust the pH to 7. S4: Cleaning: Rinse 3 times with pure water; S5: Resin Finishing: The wool, after being washed with pure water, is immersed in 3% Jinda Chemical silicone resin at a water temperature of 40℃ to finish the wool.

[0031] S6: Drying: Dry the resin-treated wool at 40℃ to obtain resin-treated wool.

[0032] Preparation Example 4 Mix 10g of water, 1g of wool oil D-HME, and 1g of sodium dodecylbenzenesulfonate LAS-60 and spray the mixture onto 100g of Merino wool. Let it sit for 15 hours to obtain wool treated with wool oil. The wool has not undergone shrink-proofing treatment.

[0033] Preparation Example 5 10g of water, 1g of D-HME oil, and 1g of sodium dodecylbenzenesulfonate LAS-60 were mixed and sprayed onto 100g of resin-treated wool prepared in Preparation Example 1, and then left to stand for 15 hours to obtain wool treated with D-HME oil. Example

[0034] Example 1 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver combed from the needle comb is stretched 11 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 17 times, spaced 2.3 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0035] Example 2 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber strands combed from the needle are stretched 10 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 16 times, spaced 2.3 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0036] Example 3 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber strands combed from the needle are stretched 9 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 15 times, spaced 2.5 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Twist: The twist of the double-strand semi-finished yarn after winding is increased on a twister to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn. Example 4 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver combed from the needle comb is stretched 11 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 17 times, spaced 2.3 mm, and the pressure combination of the rollers is 25 doN (back): 12 doN (middle): 27 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0037] Example 5 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance room is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0038] Example 6 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0039] Example 7 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 6 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the semi-finished yarn after winding and balancing is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 count double strand and a twist of 690Z / 380S to obtain knitted yarn.

[0040] Example 8 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver combed from the needle comb is stretched 11 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 17 times, spaced 2.3 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 36 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0041] Example 9 S1: The wool sliver from Preparation Example 1 is mixed, combed, and stretched once to obtain a sliver; it is combed once: the sliver is fed into a combing machine to obtain a combed sliver; the combed sliver is pin-combed to obtain a straight and uniform fiber sliver. S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 6 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the semi-finished yarn after winding and balancing is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 count double strand and a twist of 690Z / 380S to obtain knitted yarn.

[0042] Example 10 S1: The wool sliver from Preparation Example 2 is mixed once: combined, combed, and stretched to obtain a sliver; combed once: the sliver is fed into a combing machine to obtain a combed sliver; the combed sliver is pin-combed to obtain a straight and uniform fiber sliver. S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 6 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the semi-finished yarn after winding and balancing is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 count double strand and a twist of 690Z / 380S to obtain knitted yarn.

[0043] Example 11 S1: The wool sliver from Preparation Example 3 is mixed, combed, and stretched once to obtain a sliver; it is combed once: the sliver is fed into a combing machine to obtain a combed sliver; the combed sliver is pin-combed to obtain a straight and uniform fiber sliver. S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 6 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the semi-finished yarn after winding and balancing is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 count double strand and a twist of 690Z / 380S to obtain knitted yarn.

[0044] Example 12 S1: The wool sliver from Preparation Example 4 is mixed, combed, and stretched once to obtain a sliver; it is combed once: the sliver is fed into a combing machine to obtain a combed sliver; the combed sliver is pin-combed to obtain a straight and uniform fiber sliver. S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 6 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the semi-finished yarn after winding and balancing is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 count double strand and a twist of 690Z / 380S to obtain knitted yarn.

[0045] Example 13 S1: The wool sliver from Preparation Example 5 is mixed, combed, and stretched once to obtain a sliver; it is combed once: the sliver is fed into a combing machine to obtain a combed sliver; the combed sliver is pin-combed to obtain a straight and uniform fiber sliver. S2: Roving: The fiber sliver from the comb is stretched 11 times to obtain roving; the roving is placed in a balance room for 24 hours at a temperature of 30°C and a humidity of 80% to obtain balance room treated roving. Fine yarn: The roving treated in the balance chamber is fed into the spinning machine, with a draft of 17 times, a spacing of 2.3 mm, and a roller pressure combination of 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; the fine yarn is placed in the balance chamber for 6 hours at a temperature of 30℃ and a humidity of 80% to obtain fine yarn treated in the balance chamber. Winding: Cutting away harmful fuzz, foreign fibers, coarse and fine details from the fine yarn to obtain semi-finished yarn; placing the semi-finished yarn in a balance room for 6 hours at a temperature of 30°C and a humidity of 80% to obtain balance room-treated semi-finished yarn. Double twisting: The twist of the semi-finished yarn after winding and balancing is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 count double strand and a twist of 690Z / 380S to obtain knitted yarn.

[0046] Comparative Example Comparative Example 1 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver combed from the needle comb is stretched 13 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 17 times, spaced 2.3 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0047] Comparative Example 2 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver combed from the needle comb is stretched 11 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 21 times, spaced 2.3 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0048] Comparative Example 3 S1: Merino wool is blended once: blended, combed, and stretched to obtain wool tops; combed once: the wool tops are fed into a combing machine to obtain combed wool tops; the combed wool tops are pin-combed: to obtain straight and uniform fiber strands; S2: Roving: The fiber sliver combed from the needle comb is stretched 11 times to obtain roving; Fine yarn: The roving is fed into the spinning machine, drafted 17 times, spaced 4.5 mm, and the pressure combination of the rollers is 25 doN (back): 15 doN (middle): 20 doN (front) to obtain fine yarn; Winding: The process of removing harmful fuzz, foreign fibers, and thick and thin parts from fine yarn to obtain semi-finished yarn; Double twisting: The twist of the double-strand semi-finished yarn after winding is increased on a double twisting machine to make the yarn more stable. The double yarn uses a metric count of 60 and a twist of 690Z / 380S to obtain knitted yarn.

[0049] Performance testing Test 1: The knitted yarns obtained in Examples 1-13 and Comparative Examples 1-3 were sequentially spun into fabrics using a compact Sirospun process, and their smoothness was tested according to GB / T 13769-2009. The test results are shown in Table 1.

[0050] Table 1 As can be seen from Examples 1-3 and Comparative Examples 1-3 and Table 1, this application produces knitted yarns that are very smooth when woven into fabrics by reasonably setting the draft ratio and spacing of the roving and yarn.

[0051] As can be seen from Examples 1 and 4 and Table 1, this application achieves a smoother knitted yarn after it is woven into fabric by reasonably setting the pressure of the rollers in the spinning process.

[0052] As can be seen from Examples 1 and 5-8 and Table 1, this application achieves uniform stress release and prevents stress accumulation by performing three balancing chamber treatments on the yarn step by step. The resulting knitted yarn is smoother when woven into fabric, and avoids the large energy consumption of the steaming process.

[0053] As can be seen from Examples 7, 9-13 and Table 1, this application further improves the smoothness of the knitted yarn after it is woven into fabric by treating the yarn with anti-shrinkage treatment and then with wool oil.

[0054] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A spinning process for preventing wavy patterns in worsted wool knitting, characterized in that: Includes the following steps: S1: Mix the raw materials once, comb them once to obtain combed wool strips and a pin comb; S2: Roving, spinning, winding, and twisting to obtain knitted yarn; the draft ratio of the roving is 11 times, the draft ratio of the spinning is 17 times, and the spacing of the spinning is 2.3 mm. The roller pressure combination for the spinning process is: rear roller 25doN: middle roller 15doN: front roller 20doN; The raw materials include Merino wool; The Merino wool undergoes a shrink-proof treatment, which includes the following steps: soaking, chlorination, dechlorination, washing, resin finishing, and drying to obtain the shrink-proof wool. The resin also contains ultrafine silver particles; The resin is a cationic resin; After the wool undergoes anti-shrinkage treatment, it is treated with wool-smoothing oil, which includes an antistatic agent, namely sodium dodecylbenzene sulfonate LAS-60. The yarn was placed in a balance room for 24 hours before spinning, at a temperature of 30°C and a humidity of 80%. Before winding, the yarn is placed in a balance room for 6 hours at a temperature of 30°C and a humidity of 80%. Before the yarn is doubled, it is placed in a balance room for 6 hours at a temperature of 30°C and a humidity of 80%.

2. The spinning process for preventing wavy texture in worsted wool knitting according to claim 1, characterized in that: The mass ratio of the crude oil to water is 10:1:1: the antistatic agent is 10:1:1.

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