Spinning method, yarn and fabric

Abstract

The invention discloses a spinning method, yarn and fabric. The spinning method comprises a roving procedure and a spinning procedure, in the spinning procedure, the spun yarn quantitative dry weight is 1.2 g / 100 cm to 1.4 g / 100 cm, the total draft multiple is 38.5 to 48.48, the twist coefficient is 300 to 350, the twist is 73.4 T / 10 cm to 101.4 T / 10 cm, the twist direction is S twist, a leather collar jaw is 2.2 mm to 3.3 mm, the number of spindles is 13,000 r / min to 15,000 r / min, a spinning processing raw material is long stapled cotton, the average grade of the long stapled cotton is 2.5 to 4, the micronaire value is 3.8 to 5.5, the spinnable coefficient is 215 to 245, the maturity is 1.65 to 2.16, and the spinning time is 1.5 to 2.5 hours. And the average length is 34mm to 40mm. The spun yarn quantitative dry weight, the total draft ratio, a leather collar jaw and the number of spindles are matched, so that the softness of the fabric is higher; the twist coefficient and the twist are large, and the twist direction is S twist, so that the dynamic tension generated by the yarn in the spinning process is small, the dynamic tension of the yarn is always smaller than the dynamic strength of the yarn, and the probability of yarn breakage is reduced and the production continuity is improved on the premise of ensuring the high softness of the fabric.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a spinning method, yarn and fabric. Background Art

[0002] As living standards continue to improve, people have higher and higher requirements for the wearing comfort of fabrics. In particular, babies with delicate skin are more concerned about the "softness" of fabrics. In related technologies, in order to improve the softness of fabrics, yarns with smaller twists are used to make fabrics. However, during the spinning process, the dynamic strength of yarns with smaller twists will drop sharply, which will cause the dynamic tension of the yarn to be greater than its dynamic strength, resulting in yarn breakage and difficulty in continuing production.

[0003] Therefore, a new spinning process is urgently needed to reduce the probability of yarn breakage while ensuring the high softness of the fabric. Summary of the invention

[0004] The invention provides a spinning method, yarn and fabric.

[0005] The spinning method of the embodiment of the present invention includes a roving process and a spun yarn process. In the spun yarn process, the quantitative dry weight of the spun yarn is 1.2g / 100cm~1.4g / 100cm, the total draft multiple is 38.5~48.48, the twist coefficient is 300~350, the twist is 73.4T / 10cm~101.4T / 10cm, the twist direction is S twist, the leather ring jaw is 2.2mm~3.3mm, the spindle number is 13000r / min~15000r / min, wherein the spinning processing raw material is long-staple cotton, the average grade of the long-staple cotton is 2.5~4, the micronaire value is 3.8~5.5, the spinnability coefficient is 215~245, the maturity is 1.65~2.16, and the average length is 34mm~40mm.

[0006] In the spinning method of the embodiment of the present invention, the quantitative dry weight of the spun yarn, the total drafting multiple, the leather ring jaws, and the number of spindles are adapted to each other, so that the softness of the fabric is relatively high; and the twist coefficient and twist are relatively large, and the twist direction is S twist. Therefore, the dynamic tension generated by the yarn during the spinning process is relatively small, so that the dynamic tension of the yarn is always less than the dynamic strength of the yarn, thereby reducing the probability of yarn breakage and improving the continuity of production while ensuring the high softness of the fabric.

[0007] In some embodiments, the spinning method also includes a cotton opening and cleaning process, in which the dry weight of the cotton roll is 360g / m2 to 400g / m2, the moisture regain is 6% to 7.5%, the elongation of the cotton roll is 2.3% to 3%, the porcupine beater speed is 580r / min to 620r / min, the cotton roll roller speed is 12r / min to 14r / min, and the combing needle speed is 680r / min to 750r / min.

[0008] In some embodiments, the spinning method also includes a carding process, in which the sliver has a quantitative dry weight of 15 g / 5 m to 25 g / 5 m, a total drafting multiple of 95 to 115, a cylinder speed of 326 r / min to 430 r / min, a licker-in speed of 890 r / min to 1069 r / min, a cover speed of 175 mm / min to 218 mm / min, and a doffer speed of 26.4 r / min to 32.5 r / min.

[0009] In some embodiments, the spinning method also includes a combing process, in which the quantitative dry weight of the raw sliver is 15g / 5m~25g / 5m, the total drafting multiple is 105.3~125, the cylinder speed is 363r / min~396r / min, the brush speed is 980r / min~1265r / min, the roller drafting multiple is 1.25~1.45, and the cotton drop control rate is 15%~18.5%.

[0010] In some embodiments, the spinning method further comprises a drawing process, in which two drawing passes are performed, with 8 yarns being drawn together in each pass.

[0011] In some embodiments, the spinning method also includes a drawing process, in which the quantitative dry weight of the first half-drawn sliver is 15g / 5m~25g / 5m, the total drafting multiple is 5.8~7.5, the drafting multiple in the back zone is 1.6~1.95, and the roller gauge is 7mm×12mm; the quantitative dry weight of the second drawn sliver is 15g / 5m~18g / 5m, the total drafting multiple is 5.6~7.4, the drafting multiple in the back zone is 1.18~1.56, and the roller gauge is 7mm×12mm.

[0012] In certain embodiments, in the roving process, the quantitative dry weight of the roving is 5g / 10m-6g / 10m, the twist coefficient is 100-125, the twist is 4.1T / 10cm-5.1T / 10cm, the roller holding distance is 35, 49, 35, the total drafting multiple is 5.6-7, the jaw spacing is 6mm-7.8mm, and the rear zone drafting multiple is 0.95-1.19.

[0013] In some embodiments, the spinning method further comprises a winding process, in which the vehicle speed is 1100 r / min to 1350 r / min, the tension ring weight is 12.5 g to 16 g, and the drum weight is 1700 g to 1950 g.

[0014] The yarn according to the embodiment of the present invention is made by the spinning method described in any one of the above embodiments.

[0015] The fabric according to the embodiment of the present invention is made of the yarn described in the above embodiment.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0022] The spinning method of the embodiment of the present invention includes a roving process and a spun yarn process. In the spun yarn process, the quantitative dry weight of the spun yarn is 1.2g / 100cm~1.4g / 100cm, the total draft multiple is 38.5~48.48, the twist coefficient is 300~350, the twist is 73.4T / 10cm~101.4T / 10cm, the twist direction is S twist, the leather ring jaw is 2.2mm~3.3mm, the spindle number is 13000r / min~15000r / min, wherein the spinning raw material is long-staple cotton, the average grade of the long-staple cotton is 2.5~4, the micronaire value is 3.8~5.5, the spinnability coefficient is 215~245, the maturity is 1.65~2.16, and the average length is 34mm~40mm.

[0023] For example, the quantitative dry weight of the spun yarn can be 1.2g / 100cm~1.395g / 100cm, 1.265g / 100cm~1.395g / 100cm, 1.336g / 100cm~1.385g / 100cm, 1.385g / 100cm~1.4g / 100cm, 1.395g / 100cm~1.4g / 100cm, etc.; the quantitative dry weight of the spun yarn can be 1.2g / 100cm, 1.265g / 100cm, 1.336g / 100cm, 1.395g / 100cm, 1.4g / 100cm, etc.

[0024] The total draft ratio can be 38.5-48.41, 39.5-47.45, 40.2-45.65, 40.41-45.65, 45.65-48.48, etc.; the total draft ratio can be 38.5, 39.5, 40.2, 40.41, 48.48, etc.

[0025] The twist coefficient can be 300-345, 310-340, 320-335, 320-330, 330-350, etc.; the twist coefficient can be 300, 310, 320, 330, 350, etc.

[0026] The twist can be 73.4T / 10cm~101T / 10cm, 75.5T / 10cm~100.5T / 10cm, 78.5T / 10cm~95.5T / 10cm, 84.5T / 10cm~90T / 10cm, 90T / 10cm~101.4T / 10cm, etc.; the twist can be 73.4T / 10cm, 75.5T / 10cm, 78.5T / 10cm, 84.5T / 10cm, 101.4T / 10cm, etc.

[0027] The leather ring jaws can be 2.2mm~3.2mm, 2.3mm~3.2mm, 2.5mm~3mm, 2.5mm~2.8mm, 2.8mm~3.3mm, etc.; the leather ring jaws can be 2.2mm, 2.3, 2.5mm, 2.8mm, 3.3mm, etc.

[0028] The number of spindles can be 13000r / min~14500r / min, 13500r / min~14500r / min, 14000r / min~14500r / min, 14000r / min~15000r / min, 14500r / min~15000r / min, etc.; the number of spindles can be 13000r / min, 13500r / min, 14000r / min, 14500r / min, 15000r / min, etc.

[0029] In the spinning method of the embodiment of the present invention, the quantitative dry weight of the spun yarn, the total drafting multiple, the leather ring jaws, and the number of spindles are adapted to each other, so that the softness of the fabric is relatively high; and the twist coefficient and twist are relatively large, and the twist direction is S twist. Therefore, the dynamic tension generated by the yarn during the spinning process is relatively small, so that the dynamic tension of the yarn is always less than the dynamic strength of the yarn, thereby reducing the probability of yarn breakage and improving the continuity of production while ensuring the high softness of the fabric.

[0030] The dry weight of the yarn refers to the weight of the yarn per unit length. A larger dry weight of the yarn will lead to an increase in the yarn breakage rate, because the strength of the yarn decreases with the increase of the dry weight of the yarn. Therefore, controlling the range of the dry weight of the yarn can effectively improve the yarn breakage rate.

[0031] The total draft multiple refers to the sum of the draft multiples that the spun yarn is subjected to during the entire drafting process. A larger total draft multiple will lead to an increase in the yarn breakage rate, because the yarn strength decreases with the increase of the total draft multiple. Therefore, controlling the range of the total draft multiple can effectively improve the yarn breakage rate.

[0032] Twist coefficient refers to the twist of the yarn per unit length. A larger twist coefficient will lead to an increase in the yarn breakage rate, because the strength of the yarn decreases with the increase of the twist coefficient. Therefore, controlling the range of the twist coefficient can effectively improve the yarn breakage rate.

[0033] Twist refers to the twist of the yarn. A larger twist will increase the yarn breakage rate because the strength of the yarn decreases with the increase of twist. Therefore, controlling the range of twist can effectively improve the yarn breakage rate. Twist direction refers to the twist direction of the yarn. Different twist directions will have different degrees of influence on the yarn breakage rate.

[0034] The apron jaws refer to the tension of the yarn passing through the aprons in the warp channel. A larger apron jaw will increase the yarn breakage rate because the yarn is easily damaged when passing through the aprons. Therefore, controlling the size of the apron jaws can effectively improve the yarn breakage rate.

[0035] The number of spindles refers to the speed at which the spun yarn rotates on the spinning machine. A larger number of spindles will lead to an increase in the yarn breakage rate, because the yarn is easily damaged when rotating at high speed. Therefore, controlling the number of spindles can effectively improve the yarn breakage rate.

[0036] Long-staple cotton fibers are relatively long, uniform in fineness, and have a good fiber structure. This makes the yarn after spinning more uniform, stable, and of higher quality and strength. In contrast, short-staple cotton fibers are shorter in length and have a relatively poor fiber structure, and the yarn after spinning is prone to quality problems such as breakage and fracture. In addition, long-staple cotton fibers are longer and more uniform, making them easier to spin, and the fiber breakage rate during mechanical operation is lower. This helps to improve spinning production efficiency, reduce downtime and adjustment time caused by breakage, and improve the stability and capacity of the production line.

[0037] The average grade of long-staple cotton can be 2.5-3.5, 2.8-3.5, 3-3.3, 3-4, 3.3-4, etc.; the average grade of long-staple cotton can be 2.5, 2.8, 3, 3.3, 4, etc.

[0038] The micronaire value can be 3.8-5.3, 4-5, 4.3-5, 4.5-4.8, 4.8-5.5, etc.; the micronaire value can be 3.8, 4, 4.3, 4.5, 5.5, etc.

[0039] The spinnability coefficient can be 215-240, 220-240, 225-235, 230-240, 230-245, etc.; the spinnability coefficient can be 215, 220, 225, 230, 245, etc.

[0040] The maturity can be 1.65-2.15, 1.7-2.15, 1.75-2.1, 1.8-2, 1.8-2.16, etc.; the maturity can be 1.65, 1.7, 1.75, 1.8, 2.16, etc.

[0041] The average length can be 34mm~39mm, 35mm~39mm, 36mm~38mm, 36mm~40mm, 38mm~40mm, etc.; the average length can be 34mm, 35mm, 36mm, 38mm, 40mm, etc.

[0042] Among them, the average grade of long-staple cotton is an assessment of the quality and purity of cotton fibers. A higher average grade indicates better quality cotton fibers, fewer impurities and inferior fibers, which helps reduce the yarn breakage rate. The micronaire value is an indicator of the length of cotton fibers. A higher micronaire value indicates that the cotton fibers are longer and the bonds between the fibers are more firmly, which helps reduce the risk of yarn breakage. The spinnability coefficient refers to the spinnability of cotton fibers.

[0043] A higher spinnability coefficient means that cotton fibers are easier to spin and have better bonding between fibers, which helps reduce the yarn breakage rate. The maturity of cotton fibers refers to the maturity of the fibers inside. Higher maturity means a more complete fiber structure and higher fiber strength, which helps reduce the probability of yarn breakage. The average length of long-staple cotton has a direct impact on the yarn breakage rate. Longer fiber length is conducive to the mutual bonding between fibers during spinning, improving the stability and strength of the yarn, thereby reducing the risk of yarn breakage.

[0044] Specifically, the spinning method may include a cotton opening and cleaning process, a cotton combing process, a drawing process, a combing process, a roving process, a spun spinning process, and a winding process.

[0045] Among them, cotton cleaning is the first step in the spinning process, and its purpose is to process raw cotton, remove impurities, particles and other non-woven materials in the raw cotton, so that the cotton fibers used in the spinning process are cleaner and purer. The cotton cleaning process usually includes steps such as cotton unloading, grading, dust removal, impurity removal and quality inspection. In the cotton cleaning process, the opening, mixing and uniform processing requirements of raw cotton can be gradually achieved through the interaction of each single machine. The principle of "taking more bales, fine cotton grasping, full mixing, gradual opening, more loosening and less beating, early falling and less breaking, free beating and less fiber damage" should be adopted.

[0046] In certain embodiments, in the cotton opening and cleaning process, the dry basis weight of the cotton roll is 360 g / m2 to 400 g / m2, the moisture regain is 6% to 7.5%, the elongation of the cotton roll is 2.3% to 3%, the porcupine beater speed is 580 r / min to 620 r / min, the cotton roll roller speed is 12 r / min to 14 r / min, and the combing needle speed is 680 r / min to 750 r / min.

[0047] For example, the dry weight of the cotton roll can be 370g / m~398g / m, 370g / m~395g / m, 380g / m~390g / m, 385g / m~395g / m, 390g / m~400g / m, etc.; the dry weight of the cotton roll can be 360g / m, 370g / m, 380g / m, 385g / m, 400g / m, etc.

[0048] The moisture regain can be 6% to 7.5%, 6.5% to 7.0%, 6.8% to 7.0%, 6.9% to 7.3%, 7.0% to 7.5%, etc.; the moisture regain can be 6%, 6.5%, 6.8%, 7.0%, 7.5%, etc.

[0049] The elongation of the cotton roll can be 2.3% to 2.9%, 2.5% to 2.9%, 2.5% to 2.8%, 2.6% to 2.8%, 2.5% to 3%, etc.; the elongation of the cotton roll can be 2.3%, 2.5%, 2.7%, 2.9%, 3.0%, etc.

[0050] The speed of the porcupine beater can be 590r / min~610r / min, 590r / min~605r / min, 595r / min~600r / min, 600r / min~610r / min, 605r / min~620r / min, etc.; the speed of the porcupine beater can be 590r / min, 595r / min, 600r / min, 605r / min, 620r / min, etc.

[0051] The lap roller speed can be 12r / min~13.7r / min, 12.5r / min~13.5r / min, 12.6r / min~13.5r / min, 13r / min~13.2r / min, 13r / min~14r / min, etc.; the lap roller speed can be 12r / min, 12.5r / min, 13r / min, 13.5r / min, 14r / min, etc.

[0052] The combing speed can be 690r / min~740r / min, 695r / min~740r / min, 700r / min~740r / min, 700r / min~720r / min, 720r / min~750r / min, etc.; the combing speed can be 690r / min, 695r / min, 700r / min, 705r / min, 750r / min, etc.

[0053] Within these parameter ranges, the cotton fibers are uniform in thickness and can be straightened and arranged according to design requirements, which is conducive to subsequent processing and is not prone to undesirable phenomena such as breakage.

[0054] Among them, the dry weight of a cotton roll refers to the weight of cotton fiber per unit length, usually expressed in grams per meter. The smaller the dry weight of a cotton roll, the finer the cotton fiber is, because for cotton fibers of the same length, the smaller the weight and the smaller the diameter, the softer the yarn is. This is because fine fibers are softer, and the smaller the dry weight of a cotton roll, the smaller the friction between the fibers, and the softer the yarn is. When the dry weight of a cotton roll is large, the thickness of the cotton fibers is uneven, and it is easy to form details of varying thickness, which leads to an increase in the yarn breakage rate. Therefore, in order to reduce the yarn breakage rate, the dry weight of the cotton roll needs to be controlled within an appropriate range.

[0055] Moisture regain refers to the ability of cotton fibers to absorb moisture. When the moisture regain is high, the moisture absorbed by the cotton fibers will cause the strength of the yarn to decrease, thereby increasing the yarn breakage rate. Therefore, in order to reduce the yarn breakage rate, the moisture regain needs to be controlled within an appropriate range.

[0056] The elongation of the cotton lap refers to the degree of deformation of the cotton fiber during the stretching process. When the elongation of the cotton lap is large, the cotton fiber is prone to breakage, which leads to an increase in the yarn breakage rate. Therefore, in order to reduce the yarn breakage rate, the elongation of the cotton lap needs to be controlled within an appropriate range.

[0057] The porcupine beater speed, lap roller speed and combing needle speed are three key parameters in the process. When these speeds are too fast, the fibers are prone to breakage, resulting in an increase in the yarn breakage rate. Therefore, in order to reduce the yarn breakage rate, these speeds need to be controlled within a suitable range.

[0058] Carding is a process of further processing cotton fibers after opening and cleaning. In this process, a carding machine is used to straighten and arrange the cotton fibers through rotating comb teeth, while removing short fibers and other impurities, making the fibers more parallel and neat. The carding process implements the principle of "meticulous carding", with tight spacing, strong carding, slow speed, and light weight to reduce the generation of short fibers and remove short fibers and fine impurities. The carding machine in the carding process can be a carding machine sold on the market or a customized carding machine. Optionally, the carding machine model is FA201.

[0059] In certain embodiments, in the carding process, the sliver has a dry weight of 15 g / 5 m to 25 g / 5 m, a total drafting multiple of 95 to 115, a cylinder speed of 326 r / min to 430 r / min, a licker-in speed of 890 r / min to 1069 r / min, a cover speed of 175 mm / min to 218 mm / min, and a doffer speed of 26.4 r / min to 32.5 r / min.

[0060] For example, the quantitative dry weight of the raw strips can be 15g / 5m~24g / 5m, 18g / 5m~23g / 5m, 19g / 5m~23g / 5m, 20g / 5m~23g / 5m, 20g / 5m~25g / 5m, etc.; the quantitative dry weight of the raw strips can be 16g / 5m, 18g / 5m, 19g / 5m, 20g / 5m, 25g / 5m, etc.

[0061] The total draft ratio can be 95-110, 97.5-110, 100-105.5, 105.5-110, 100-115, etc.; the total draft ratio can be 95, 97.5, 100, 105.5, 115, etc.

[0062] The cylinder speed can be 326r / min~429r / min, 328r / min~425r / min, 330r / min~420r / min, 359r / min~400r / min, 400r / min~430r / min, etc.; the cylinder speed can be 326r / min, 330r / min, 359r / min, 400r / min, 430r / min, etc.

[0063] The licker-in speed can be 895r / min~1066r / min, 900r / min~1060r / min, 910r / min~1050r / min, 930r / min~1050r / min, 1050r / min~1069r / min, etc.; the licker-in speed can be 895r / min, 900r / min, 930r / min, 1050r / min, 1069r / min, etc.

[0064] The cover speed can be 175mm / min~215mm / min, 188mm / min~215mm / min, 190mm / min~210mm / min, 200mm / min~205mm / min, 200mm / min~218mm / min, etc.; the cover speed can be 175mm / min, 188mm / min, 190mm / min, 200mm / min, 218mm / min, etc.

[0065] The doffer speed can be 26.4r / min~31.5r / min, 26.7r / min~31.5r / min, 26.8r / min~30.5r / min, 28.4r / min~29r / min, 26.4r / min~32.5r / min, etc.; the doffer speed can be 26.4r / min, 26.7r / min, 29r / min, 29.5r / min, 32.5r / min, etc.

[0066] Within these parameter ranges, the fiber drafting degree and fiber strength are large, so the yarn is not prone to breakage during the manufacturing process.

[0067] The dry weight of raw sliver refers to the weight of raw cotton per unit length, usually in grams per meter. The larger the dry weight of raw sliver, the longer the fiber length, the higher the fiber strength, and the lower the yarn breakage rate. Therefore, in order to reduce the yarn breakage rate, raw materials with a larger dry weight of raw sliver should be selected.

[0068] The total draft ratio refers to the product of the draft ratios before and after the carding machine. The greater the total draft ratio, the greater the tension on the fiber, and the fiber structure and performance will change, thus affecting the yarn breakage rate.

[0069] Cylinder speed refers to the rotation speed of the carding machine cylinder. The higher the cylinder speed, the greater the fiber draft, the fiber structure and properties will change, thus affecting the yarn breakage rate.

[0070] The licker-in speed refers to the rotation speed of the licker-in roller of the carding machine. The higher the licker-in speed, the greater the degree of fiber drafting, the fiber structure and properties will change, thus affecting the yarn breakage rate.

[0071] Flat speed refers to the movement speed of the carding machine flat. The higher the flat speed, the greater the degree of fiber drafting, the fiber structure and properties will change, thus affecting the yarn breakage rate.

[0072] Doffer speed refers to the movement speed of the doffer of the carding machine. The higher the doffer speed, the greater the degree of fiber drafting, the fiber structure and performance will change, thus affecting the yarn breakage rate.

[0073] The drawing process is to combine the single fibers produced by the carding machine to form a drawing frame. The drawing process is usually completed using a drawing frame, which combines the single fibers output by multiple carding machines into a thicker fiber bundle to provide better raw materials for subsequent processes. The drawing frame in the drawing process can be a commercially available drawing frame or a customized drawing frame. Optionally, the model of the drawing frame is FA306.

[0074] In certain embodiments, in the drawing process, two drawing passes are performed, and 8 strands are drawn together in each pass.

[0075] In this way, through two-pass drawing, multiple single yarns are combined into a 16-strand yarn, making the thickness of the yarn more uniform, which can improve the strength and quality of the yarn and make it more durable; in the drawing process, the single yarns will be stretched and compressed, making the yarn smoother, reducing the gaps in the yarn and improving the quality of the yarn; in addition, by combining multiple single yarns at one time, the number of yarn interlacing can be reduced, the spinning efficiency can be improved, and the production cost can be reduced.

[0076] Two-pass drawing means that in the spinning process, 8 single yarns are drawn in the first pass and then in the second pass to be combined into a 16-ply yarn. Each pass 8-ply drawing means that in the first and second pass drawing, the number of single yarns drawn each time is 8.

[0077] In the second drawing process, the draft distribution of "forward draft" can be used to improve the dryness of the sliver. The draft distribution of "forward draft" means that in the drawing process, the draft is distributed to each roller from front to back, that is, the draft is first distributed to the front roller and then to the back roller.

[0078] The draft distribution method of "forward draft" can make the draft force evenly distributed on each roller. If other distribution methods are used, such as random distribution or reverse distribution, the draft force on some rollers will be too large, while the draft force on other rollers will be too small, thus affecting the dryness level of the sliver. The draft distribution method of "forward draft" can reduce the fluctuation of the draft force. During the drawing process, the fluctuation of the draft force will affect the draft uniformity of the yarn, thereby affecting the dryness level of the sliver. The draft distribution method of "forward draft" can reduce the fluctuation of the draft force, thereby improving the dryness level of the sliver.

[0079] In certain embodiments, in the drawing process, the quantitative dry weight of the first half-done strips is 15g / 5m-25g / 5m, the total drafting ratio is 5.8-7.5, the drafting ratio in the rear zone is 1.6-1.95, and the roller gauge is 7mm×12mm; the quantitative dry weight of the second-done strips is 15g / 5m-18g / 5m, the total drafting ratio is 5.6-7.4, the drafting ratio in the rear zone is 1.18-1.56, and the roller gauge is 7mm×12mm.

[0080] For example, the quantitative dry weight of the first and half-cooked strips can be 15g / 5m~24g / 5m, 16g / 5m~24g / 5m, 17g / 5m~22g / 5m, 17g / 5m~20g / 5m, 20g / 5m~25g / 5m, etc.; the quantitative dry weight of the first and half-cooked strips can be 15g / 5m, 16g / 5m, 17g / 5m, 20g / 5m, 25g / 5m, etc.

[0081] The total draft ratio can be 5.8-7.35, 6-7.2, 6.35-7, 6.35-6.6, 6.5-7.5, etc.; the total draft ratio can be 5.8, 6, 6.35, 6.35, 6.5, etc.

[0082] The drafting multiples in the rear zone can be 1.6-1.9, 1.65-1.9, 1.7-1.8, 1.75-1.85, 1.75-1.95, etc.; the drafting multiples in the rear zone can be 1.6, 1.65, 1.7, 1.75, 1.95, etc.

[0083] The quantitative dry weight of the two-combined cooked strips can be 15g / 5m~17.5g / 5m, 16g / 5m~17.5g / 5m, 16.5g / 5m~17.5g / 5m, 16.5g / 5m~17g / 5m, 16.5g / 5m~18g / 5m, etc.; the quantitative dry weight of the two-combined cooked strips can be 15g / 5m, 16g / 5m, 16.5g / 5m, 16.5g / 5m, 16.5g / 5m, 16.5g / 5m, etc.

[0084] The total draft ratio can be 5.6-7.15, 5.8-7.1, 5.9-6.85, 6-6.18, 6.18-7.4, etc.; the total draft ratio can be 5.6, 5.8, 5.9, 6.18, 7.4, etc.

[0085] The drafting multiples in the rear zone can be 1.18-1.55, 1.20-1.55, 1.25-1.5, 1.3-1.5, 1.35-1.56, etc.; the drafting multiples in the rear zone can be 1.18, 1.20, 1.25, 1.3, 1.56, etc.

[0086] Within these parameter ranges, the density and stretching of the yarn are small, so the yarn is less likely to break during the manufacturing process.

[0087] Among them, the quantitative dry weight of the semi-rough yarn refers to the weight per unit length of the semi-rough yarn, which determines the density of the yarn and has a great influence on the yarn breakage rate. When the quantitative dry weight of the semi-rough yarn is too large, the yarn density will increase and the yarn breakage rate will also increase; on the contrary, when the quantitative dry weight of the semi-rough yarn is too small, the yarn density will decrease and the yarn breakage rate will also decrease.

[0088] The total drafting multiple refers to the drafting multiple in the entire drafting process from drawing to cone forming, which also has a certain influence on the yarn breakage rate. When the total drafting multiple is too large, the yarn stretching degree will increase, and the yarn breakage rate will also increase; on the contrary, when the total drafting multiple is too small, the yarn stretching degree will decrease, and the yarn breakage rate will also decrease.

[0089] The back-zone drafting multiple refers to the drafting multiple in the second half of the drafting process from drawing to cone formation, which also has a certain influence on the yarn breakage rate. When the back-zone drafting multiple is too large, the yarn stretching degree will increase, and the yarn breakage rate will also increase; on the contrary, when the back-zone drafting multiple is too small, the yarn stretching degree will decrease, and the yarn breakage rate will also decrease.

[0090] Roller gauge refers to the distance between two adjacent rollers during the drafting process from drawing to bobbin formation, which also has a certain impact on the yarn breakage rate. When the roller gauge is too large, the yarn drafting degree will be uneven, and the yarn breakage rate will increase accordingly; on the contrary, when the roller gauge is too small, the yarn drafting degree will be more uniform, and the yarn breakage rate will decrease accordingly.

[0091] Parameters such as the quantitative dry weight of the half-ripened sliver, the total drafting ratio, and the drafting ratio of the back zone will also affect the yarn breakage rate. The influencing mechanism is similar to that of the parameters such as the quantitative dry weight of the first and semi-ripened sliver, the total drafting ratio, and the drafting ratio of the back zone, so they will not be repeated here.

[0092] Combing is a further treatment of the drawing to obtain finer and longer fibers. In the combing process, the short fibers and impurities in the drawing are further removed by using a combing machine, and the fibers are straightened and arranged to produce fiber bundles with more uniform fiber fineness and longer length. The combing process should focus on removing short fibers and impurities, while taking other factors into consideration. The even number principle must be followed, and a large number of hook fibers should be "properly" fed into the combing machine in the forward hook direction. The combing machine in the combing process can be a combing machine sold on the market or a customized combing machine. Optionally, the model of the combing machine is FA269.

[0093] In certain embodiments, in the combing process, the sliver quantitative dry weight is 15g / 5m~25g / 5m, the total drafting multiple is 105.3~125, the cylinder speed is 363r / min~396r / min, the brush speed is 980r / min~1265r / min, the roller drafting multiple is 1.25~1.45, and the cotton drop control rate is 15%~18.5%.

[0094] For example, the quantitative dry weight of the raw strips can be 15g / 5m~23g / 5m, 16g / 5m~23g / 5m, 18g / 5m~22g / 5m, 18g / 5m~20g / 5m, 20g / 5m~25g / 5m, etc.; the quantitative dry weight of the raw strips can be 15g / 5m, 16g / 5m, 18g / 5m, 20g / 5m, 25g / 5m, etc.

[0095] The total drafting multiple can be 105.3-124.5, 108.5-124, 110.6-120, 115.7-120, 120-125, etc.; the total drafting multiple can be 105.3, 108.5, 110.6, 115.7, 125, etc.

[0096] The cylinder speed can be 363r / min~395r / min, 365r / min~390r / min, 370r / min~385r / min, 380r / min~385r / min, 385r / min~396r / min, etc.; the cylinder speed can be 363r / min, 365r / min, 370r / min, 380r / min, 385r / min, etc.

[0097] The brush speed can be 980r / min~1260r / min, 985r / min~1260r / min, 1000r / min~1250r / min, 1100r / min~1250r / min, 1100r / min~1265r / min, etc.; the brush speed can be 980r / min, 985r / min, 1000r / min, 1100r / min, 1265r / min, etc.

[0098] The roller drafting multiples can be 1.25-1.40, 1.30-1.40, 1.31-1.40, 1.31-1.35, 1.35-1.45, etc.; the roller drafting multiples can be 1.25, 1.30, 1.31, 1.35, 1.45, etc.

[0099] The cotton drop control rate can be 15% to 18%, 16% to 18%, 17% to 17.5%, 17% to 17.2%, 17.5% to 18.5%, etc.; the cotton drop control rate can be 15%, 16%, 17%, 17.2%, 18.5%, etc.

[0100] Within these parameter ranges, the yarn is uniform in thickness and is subjected to less force when being stretched, so the yarn is less likely to break during the manufacturing process.

[0101] Among them, the sliver weight refers to the weight of the sliver per unit length, which affects the thickness of the yarn. If the sliver weight is too large, the yarn will be too thick and easy to break. If the sliver weight is too small, the yarn will be too thin and easy to break. Therefore, the sliver weight needs to be controlled within an appropriate range to obtain a lower breakage rate.

[0102] The total draft ratio refers to the total number of times the sliver is drafted in the combing process. If the total draft ratio is too large, the fiber will be overstretched, the strength of the yarn will decrease, and the yarn will be easily broken. If the total draft ratio is too small, the fiber will be tightened, the softness of the yarn will decrease, and the yarn will also be easily broken. Therefore, the total draft ratio also needs to be controlled within an appropriate range.

[0103] Cylinder speed refers to the rotation speed of the combing machine cylinder. If the cylinder speed is too fast, the fiber will be overstressed during drafting, the strength of the yarn will decrease, and it will be easy to break. If the cylinder speed is too slow, the fiber will be tightened, the softness of the yarn will decrease, and it will also be easy to break. Therefore, the cylinder speed also needs to be controlled within an appropriate range.

[0104] Brush speed refers to the rotation speed of the combing machine brush. If the brush speed is too fast, the fiber will be overstressed during drafting, the strength of the yarn will decrease, and the yarn will break easily. If the brush speed is too slow, the fiber will be tightened, the softness of the yarn will decrease, and the yarn will also break easily. Therefore, the brush speed also needs to be controlled within an appropriate range.

[0105] The roller draft ratio refers to the draft ratio of the yarn after it passes through the rollers in the combing process. If the roller draft ratio is too large, the fiber will be overstretched, the strength of the yarn will decrease, and it will be easy to break. If the roller draft ratio is too small, the fiber will be tightened, the softness of the yarn will decrease, and it will also be easy to break. Therefore, the roller draft ratio also needs to be controlled within an appropriate range.

[0106] The cotton drop control rate refers to the frequency of the cotton dropper controlling the cotton slivers to fall into the rollers. A cotton drop control rate that is too low will cause the cotton slivers to fall into the rollers unstably, affecting the drafting multiple and strength of the yarn, and making it easy to break the yarn. A cotton drop control rate that is too high will cause the cotton slivers to fall into the rollers excessively drafted, reducing the strength of the yarn and making it easy to break the yarn. Therefore, the cotton drop control rate also needs to be controlled within an appropriate range.

[0107] The roving process is to further process the fiber bundles that have passed the combing process to form roving. In the roving process, the fiber bundles are gradually thinned and elongated through the rotation and processing of the spinning machine. At the same time, spinning aids can be added and twisted to form a spinning line of a certain specification and strength. The roving frame in the roving process can be a roving frame sold on the market or a customized roving frame. Optionally, the model of the roving frame is TJFA458A.

[0108] In certain embodiments, in the roving process, the quantitative dry weight of the roving is 5g / 10m-6g / 10m, the twist coefficient is 100-125, the twist is 4.1T / 10cm-5.1T / 10cm, the roller holding distance is 35, 49, 35, the total drafting multiple is 5.6-7, the jaw spacing is 6mm-7.8mm, and the rear zone drafting multiple is 0.95-1.19.

[0109] For example, the quantitative dry weight of the roving can be 5g / 10m-5.9g / 10m, 5.2g / 10m-5.8g / 10m, 5.5g / 10m-5.8g / 10m, 5.5g / 10m-5.6g / 10m, 5.6g / 10m-6g / 10m, etc.; the quantitative dry weight of the roving can be 5g / 10m, 5.2g / 10m, 5.5g / 10m, 5.6g / 10m, 6g / 10m, etc.

[0110] The twist coefficient can be 100-120, 105-120, 110-115, 115-125, 110-125, etc.; the twist coefficient can be 100, 105, 110, 115, 125, etc.

[0111] The twist can be 4.1T / 10cm~5.0T / 10cm, 4.25T / 10cm~5.0T / 10cm, 4.35T / 10cm~4.85T / 10cm, 4.55T / 10cm~4.8T / 10cm, 4.65T / 10cm~5.1T / 10cm, etc.; the twist can be 4.1T / 10cm, 4.25T / 10cm, 4.35T / 10cm, 4.55T / 10cm, 5.1T / 10cm, etc.

[0112] The total draft ratio can be 5.6-6.95, 5.7-6.65, 5.9-6.3, 6-6.11, 6.11-7, etc.; the total draft ratio can be 5.6, 5.7, 5.9, 6.11, 7, etc.

[0113] The jaw spacing can be 6mm~7.5mm, 6.4mm~7.5mm, 6.5mm~7.2mm, 6.8mm~7mm, 7mm~7.8mm, etc.; the jaw spacing can be 6mm, 6.4mm, 6.5mm, 7mm, 7.8mm, etc.

[0114] The drafting multiples in the rear zone can be 0.95-1.15, 0.98-1.15, 1-1.12, 1.05-1.1, 1.1-1.19, etc.; the drafting multiples in the rear zone can be 0.95, 0.98, 1, 1.05, 1.19, etc.

[0115] Within these parameter ranges, the yarn drafting degree is small, so the yarn is not prone to breakage during the manufacturing process.

[0116] Among them, the quantitative dry weight of roving refers to the weight per unit length of roving. When the quantitative dry weight of roving is too large, the density of yarn will increase and the yarn breakage rate will also increase accordingly; on the contrary, when the quantitative dry weight of roving is too small, the density of yarn will decrease and the yarn breakage rate will also decrease accordingly.

[0117] Twist coefficient refers to the number of twists of yarn per unit length. When the twist coefficient is too large, the twist of the yarn will increase and the yarn breakage rate will also increase accordingly; on the contrary, when the twist coefficient is too small, the twist of the yarn will decrease and the yarn breakage rate will also decrease accordingly.

[0118] Twist refers to the degree of twisting of the yarn. When the twist is too large, the twist of the yarn will increase, and the yarn breakage rate will also increase accordingly; on the contrary, when the twist is too small, the twist of the yarn will decrease, and the yarn breakage rate will also decrease accordingly.

[0119] The roller holding distance refers to the distance between two adjacent rollers. When the roller holding distance is too large, the yarn drafting degree will be uneven and the yarn breakage rate will increase accordingly; on the contrary, when the roller holding distance is too small, the yarn drafting degree will be more uniform and the yarn breakage rate will decrease accordingly.

[0120] The total drafting ratio refers to the drafting ratio in the entire drafting process from roving to bobbin. When the total drafting ratio is too large, the stretching degree of the yarn will increase and the yarn breakage rate will also increase accordingly; on the contrary, when the total drafting ratio is too small, the stretching degree of the yarn will decrease and the yarn breakage rate will also decrease accordingly.

[0121] The jaw gauge refers to the distance between two adjacent jaws. When the jaw gauge is too large, the yarn drafting degree will be uneven and the yarn breakage rate will increase accordingly; on the contrary, when the jaw gauge is too small, the yarn drafting degree will be more uniform and the yarn breakage rate will decrease accordingly.

[0122] The drafting multiple in the back zone refers to the drafting multiple in the second half of the drafting process from roving to bobbin. When the drafting multiple in the back zone is too large, the stretching degree of the yarn will increase and the yarn breakage rate will also increase accordingly; on the contrary, when the drafting multiple in the back zone is too small, the stretching degree of the yarn will decrease and the yarn breakage rate will also decrease accordingly.

[0123] In order to make the roving uniform, compact and well-formed to facilitate the processing of fine yarn, the roving process adopts the technology of "larger twist coefficient and small jaws". While ensuring the normal drafting of the fine yarn, the twist coefficient of the roving is controlled to be larger, so that the roving does not have hard ends. This is beneficial to the control of floating fibers during the drafting process of the fine yarn and reduces accidental drafting during the unwinding of the roving.

[0124] The process of "larger twist coefficient, small jaw" refers to the process of twisting the fiber bundle, stretching and twisting it in the process of pressing it with the jaws, so that the fiber bundle becomes yarn. Among them, "larger twist coefficient" means that during the twisting process, a larger torsional force is given to the fiber bundle, so that the fibers in the fiber bundle are entangled with each other, thus forming yarn. And "small jaw" means that during the stretching and twisting process, the width of the jaws is smaller, so that the fiber bundle can be stretched and twisted more evenly, thus forming a uniform yarn.

[0125] The spinning process is to further process the roving to obtain a finer yarn. In the spinning process, the roving is further thinned by the rotation and stretching movement of the spinning frame, reducing the diameter of the yarn and improving the uniformity and quality of the yarn. The roving frame in the spinning process can be a spinning frame sold on the market or a customized spinning frame. Optionally, the model of the spinning frame is G32.

[0126] In the spinning process, attention must be paid to the reasonable allocation of each drafting zone so that the pressure, roller spacing, apron, jaw spacing and drafting force are adapted to each other, and the spindle speed is reasonably selected to reduce the hairiness of the spinning and the breakage of the yarn.

[0127] Among them, each drafting zone refers to the various parts that the yarn passes through on the drafting machine, including the front drafting zone, the middle drafting zone and the rear drafting zone. The reasonable allocation of each drafting zone means that in the spinning process, the drafting multiple of each drafting zone needs to be reasonably allocated according to the characteristics of the yarn and the process requirements to achieve the ideal spinning quality.

[0128] Pressurization refers to controlling the drafting multiple of the yarn on the drafting machine by adjusting the pressure of the drafting machine. Reasonable pressurization can make the yarn reach the ideal drafting multiple on the drafting machine, thereby obtaining the ideal spinning quality.

[0129] Roller gauge refers to the control of the yarn drafting multiple on the drafting machine by adjusting the roller spacing on the drafting machine. Reasonable roller gauge can make the yarn reach the ideal drafting multiple on the drafting machine, thus obtaining the ideal spinning quality.

[0130] The apron jaw gauge refers to the control of the yarn drafting multiple on the drafting machine by adjusting the distance between the apron and the jaws. Reasonable apron jaw gauge can make the yarn reach the ideal drafting multiple on the drafting machine, thus obtaining the ideal spinning quality.

[0131] Draft force adaptation means that in the spinning process, the draft force of the drafting machine needs to be reasonably selected according to the characteristics of the yarn and process requirements in order to achieve the ideal spinning quality.

[0132] The winding process is to wind the yarn that has passed the spinning process onto a spinning bobbin or other bobbin. Through the winding process, the yarn can be wound and stored according to a certain length and specification, which is convenient for use and processing in subsequent processes. In the winding process, a reasonable winding tension should be used, the drum speed should be appropriately reduced, and the yarn channel should be kept unobstructed and in good mechanical condition to reduce the impact of the winding process on the yarn quality. The winding machine in the winding process can be a winding machine sold on the market or a customized winding machine. Optionally, the model of the winding machine is an ORION M full-brake winding machine with an anti-twist device.

[0133] In the winding process, the yarn passes through a series of transmission devices from the spindle and is finally wound into a tube, namely the spinning tube. In this process, if the yarn tension is unreasonable, the drum speed is too fast or the channel is not smooth, it will have an adverse effect on the quality of the yarn, such as broken ends, hairiness, etc. Therefore, a series of measures need to be taken to minimize the impact of the winding process on the yarn quality.

[0134] Reasonable winding tension means that in the winding process, it is necessary to select the appropriate winding tension according to the characteristics of the yarn and the process requirements. This can ensure that the yarn will not break or have hairiness during winding into a spun yarn, thereby obtaining ideal yarn quality.

[0135] Appropriately reducing the speed of the drum means that in the winding process, the speed of the drum needs to be reasonably adjusted according to the characteristics of the yarn and process requirements. Appropriately reducing the speed of the drum can reduce the tension of the yarn during the winding process, thereby reducing the occurrence of problems such as yarn breakage and hairiness.

[0136] Keeping the yarn channel unobstructed means that in the winding process, the yarn channel needs to be kept unobstructed to avoid problems such as yarn jamming and squeezing in the channel. This can be achieved by regularly cleaning the channel and adjusting the channel design.

[0137] In certain embodiments, in the winding process, the machine speed is 1100 r / min to 1350 r / min, the weight of the tension ring is 12.5 g to 16 g, and the weight of the cone is 1700 g to 1950 g.

[0138] For example, the vehicle speed can be 1100r / min~1300r / min, 1150r / min~1300r / min, 1200r / min~1300r / min, 1200r / min~1250r / min, 1250r / min~1350r / min, etc.; the vehicle speed can be 1100r / min, 1150r / min, 1200r / min, 1250r / min, 1350r / min, etc.

[0139] The weight of the tension ring can be 12.5g~15.5g, 13.5g~15g, 14g~15g, 14g~16g, 15g~16g, etc.; the weight of the tension ring can be 12.5g, 13.5g, 14g, 15g, 16g, etc.

[0140] The cylinder weight can be 1700g~1900g, 1750g~1900g, 1780g~1890g, 1780g~1950g, 1890g~1950g, etc.; the cylinder weight can be 1700g, 1750g, 1780g, 1890g, 1950g, etc.

[0141] Within these parameter ranges, the yarn is less stretched when being wound on the bobbin, so the yarn is less likely to break during the manufacturing process.

[0142] The speed refers to the speed at which the yarn is wound around the bobbin on the winding machine. When the speed is too slow, the yarn will be overstretched when winding, thereby increasing the yarn breakage rate. When the speed is too fast, the yarn will be overtightened when winding, which will also increase the yarn breakage rate. Therefore, in order to control the yarn breakage rate, the speed needs to be controlled within an appropriate range.

[0143] The tension ring weight refers to the weight of the tension ring wound on the yarn bobbin. When the tension ring weight is too light, the yarn will be overstretched when winding the bobbin, thereby increasing the yarn breakage rate. When the tension ring weight is too heavy, the yarn will be too tight when winding the bobbin, which will also increase the yarn breakage rate. Therefore, in order to control the yarn breakage rate, the tension ring weight needs to be controlled within an appropriate range.

[0144] The bobbin weight refers to the sum of the weight of the yarn and the tension ring wound on the yarn bobbin. When the bobbin weight is too light, the yarn will be overstretched when winding the bobbin, thereby increasing the yarn breakage rate. When the bobbin weight is too heavy, the yarn will be too tight when winding the bobbin, which will also increase the yarn breakage rate. Therefore, in order to control the yarn breakage rate, the bobbin weight needs to be controlled within an appropriate range.

[0145] The yarn of the embodiment of the present invention is made by the spinning method of any of the above embodiments. Since suitable parameters are selected in the roving and spun yarn processes, the yarn is made softer and the yarn breakage rate in the yarn manufacturing process is reduced.

[0146] The fabric of the embodiment of the present invention is made of the yarn of the above embodiment. Since the yarn is relatively soft and the yarn breakage rate during the manufacturing process is relatively low, the fabric obtained is relatively soft and the manufacturing efficiency of the fabric is relatively high.

[0147] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0148] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spinning method, characterized in that: The invention comprises a roving process and a spun yarn process. In the spun yarn process, the quantitative dry weight of the spun yarn is 1.2 g / 100 cm2-1.4 g / 100 cm2, the total drafting multiple is 38.5-48.48, the twist coefficient is 300-350, the twist is 73.4 T / 10 cm2-101.4 T / 10 cm2, the twist direction is S twist, the apron jaw is 2.2 mm-3.3 mm, the number of spindles is 13000 r / min-15000 r / min, wherein the spinning raw material is long-staple cotton, the average grade of the long-staple cotton is 2.5-4, the micronaire value is 3.8-5.5, the spinnability coefficient is 215-245, the maturity is 1.65-2.16, and the average length is 34 mm-40 mm.

2. The spinning method according to claim 1, characterized in that: The spinning method also includes a cotton opening and cleaning process. In the cotton opening and cleaning process, the dry weight of the cotton roll is 360g / m2 to 400g / m2, the moisture regain is 6% to 7.5%, the elongation of the cotton roll is 2.3% to 3%, the porcupine beater speed is 580r / min to 620r / min, the cotton roll roller speed is 12r / min to 14r / min, and the combing needle speed is 680r / min to 750r / min.

3. The spinning method according to claim 1, characterized in that: The spinning method also includes a carding process, in which the sliver has a quantitative dry weight of 15 g / 5 m to 25 g / 5 m, a total drafting multiple of 95 to 115, a cylinder speed of 326 r / min to 430 r / min, a licker-in speed of 890 r / min to 1069 r / min, a cover speed of 175 mm / min to 218 mm / min, and a doffer speed of 26.4 r / min to 32.5 r / min.

4. The spinning method according to claim 1, characterized in that: The spinning method also includes a combing process, in which the quantitative dry weight of the raw sliver is 15g / 5m~25g / 5m, the total drafting multiple is 105.3~125, the cylinder speed is 363r / min~396r / min, the brush speed is 980r / min~1265r / min, the roller drafting multiple is 1.25~1.45, and the cotton drop control rate is 15%~18.5%.

5. The spinning method according to claim 1, characterized in that: The spinning method further comprises a drawing process, in which two drawing passes are performed, with 8 yarns being drawn together in each pass.

6. The spinning method according to claim 5, characterized in that: The spinning method also includes a drawing process, in which the quantitative dry weight of the first half-drawn sliver is 15g / 5m-25g / 5m, the total drafting multiple is 5.8-7.5, the drafting multiple in the rear zone is 1.6-1.95, and the roller gauge is 7mm×12mm; the quantitative dry weight of the second-drawn sliver is 15g / 5m-18g / 5m, the total drafting multiple is 5.6-7.4, the drafting multiple in the rear zone is 1.18-1.56, and the roller gauge is 7mm×12mm.

7. The spinning method according to claim 1, characterized in that: In the roving process, the quantitative dry weight of the roving is 5g / 10m~6g / 10m, the twist coefficient is 100~125, the twist is 4.1T / 10cm~5.1T / 10cm, the roller holding distance is 35, 49, and 35, the total drafting multiple is 5.6~7, the jaw spacing is 6mm~7.8mm, and the rear zone drafting multiple is 0.95~1.

19.

8. The spinning method according to claim 1, characterized in that: The spinning method further comprises a winding process, in which the machine speed is 1100 r / min to 1350 r / min, the weight of the tension ring is 12.5 g to 16 g, and the weight of the cone is 1700 g to 1950 g.

9. A yarn, characterized in that: The yarn is produced by the spinning method according to any one of claims 1 to 8.

10. A fabric, characterized in that: The fabric is made from the yarn of claim 9.