A double face woollen yarn and its production method

Abstract

The application discloses a double-faced woollen fabric and a preparation method thereof. The weight ratio of the combing noil fiber and the antibacterial nylon fiber in the double-faced woollen fabric is 70:30. The double-faced woollen fabric is composed of a core layer and outer wrapping fibers. The angle between the combing noil fiber and the yarn shaft in the core layer is 10-15 degrees, the angle between the nylon fiber and the yarn shaft in the core layer is 20-30 degrees, the total number of the outer wrapping fibers is 150-200 per meter, and the number of the combing noil fiber in the outer wrapping fibers is 30-50 per meter. The preparation method comprises the following steps: adopting a double combing rotor spinning technology, feeding the combing noil fiber strip and the antibacterial nylon fiber strip into a left feeding roller and a right feeding roller respectively, combing the combing noil fiber strip and the antibacterial nylon fiber strip through a left combing roller and a right combing roller, and feeding the combing noil fiber strip and the antibacterial nylon fiber strip into a rotor through a left fiber outlet of a left fiber conveying channel and a right fiber outlet of a right fiber conveying channel respectively. The application overcomes the limitation that the combing noil fiber cannot be spun into high-grade double-faced woollen fabric in the prior art, and expands the application range of the rotor spinning.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of spinning technology and product technology, and relates to a rotor yarn and a preparation method thereof, in particular to a rotor yarn for double-faced woollens and a preparation method thereof. BACKGROUND

[0002] Double-faced woollens refer to double-faced pure wool or double-faced wool blended fabrics, and the main raw materials include carbonized wool, rabbit hair, cashmere, etc. Double-faced woollens have good warmth retention, lightness, crispness, wearability on both sides, skin-friendliness and other excellent wearable properties. Therefore, consumers prefer double-faced woollen overcoats, and in recent years, the market situation and prospect of double-faced woollens have also presented a situation of supply not meeting demand. With the popularity of double-faced woollen fabrics, the crisis of double-faced woollen fabrics has also broken out, and a situation of wool shortage has appeared.

[0003] At present, the common double-faced woollens on the market are mainly woven from high-quality wool, alpaca, cashmere and other natural fibers or a small amount of chemical fibers. Double-faced woollen fabrics have high requirements for raw materials. In order to make the pile on the surface of the fabric firm and not shed, the fiber needs to be combined firmly in the yarn, and the pile is not easy to fall off after cutting. In order to ensure that the fabric has good raising effect after cutting, the weft yarn used in the double-faced woollen fabric also needs to be fluffy and soft. Since the pile on the surface of the double-faced woollen fabric is generated by the weft yarn after cutting, the raw material used to spin the weft yarn is generally wool or cashmere with a longer fiber length. Wool and cashmere are both natural animal fibers, and cashmere is a kind of precious natural fiber. Cashmere fiber is fine, strong and lustrous, but its yield is low and its price is high. Wool has a high yield and a wide range of fiber length distribution. However, the most obvious difference between wool and cashmere is that the fineness of wool fiber is significantly greater than that of cashmere fiber. The average fineness of wool fiber ranges from 19 to 37 μm, and the average fineness of cashmere fiber ranges from 15 to 18 μm. In particular, the average fineness of wool fiber is much greater than that of cashmere fiber, making it more difficult to spin wool fiber than cashmere fiber under the same length condition. Generally speaking, combed noil belongs to short fibers, and its length is in the same length distribution range as cashmere. The length of combed noil and cashmere is below 38 mm, which belongs to short fiber spinning.

[0004] At present, wool fiber spinning can be divided into three systems of carding, semi-worsted and worsted spinning, wherein worsted spinning is mainly for combing wool with fiber length of 120mm or above, semi-worsted spinning has fiber length of about 55mm, and carding spinning has fiber length of combing wool below 38mm. No matter which system of wool fiber spinning, the spinning method commonly used in the process of spinning yarn is ring spinning or flyer spinning. Especially when ring spinning or flyer spinning is used to spin wool fiber and is used for double face cloth fabric, in order to ensure the firmness of wool on the fabric after cutting and not easy to fall off, and to ensure better raising effect, the fiber length of wool used is usually above 55mm. The reason is that the key to ensure better raising effect of double face cloth fabric after cutting is that wool has a high degree of parallel arrangement in the yarn, and the fiber in the yarn can be exposed to the surface of the fabric after cutting, and the length of the cut wool is uniform and evenly distributed. But at the same time, in order to not fall off after cutting, the fiber in the yarn also requires higher firmness. Because the fiber length of short wool fiber, especially combing wool, is shorter and the fiber diameter is larger, when ring spinning or flyer spinning is used, under the condition of smaller twist, the fiber is not easy to transfer inside and outside, the fiber in the yarn is not firm enough, and it is easy to fall off after cutting, and under the condition of larger twist, the fiber in the yarn is not parallel enough, not easy to cut, and not easy to raise after cutting.

[0005] Therefore, how to spin high-grade double face cloth fabric with combing wool is a problem to be solved. SUMMARY

[0006] The purpose of the present application is to solve the above-mentioned problems existing in the prior art, and to provide a double face cloth use rotor yarn and a preparation method thereof.

[0007] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0008] A double face cloth use rotor yarn is spun by mixing combing wool fiber and antibacterial nylon fiber, and the weight ratio of combing wool fiber and antibacterial nylon fiber in the double face cloth use rotor yarn is 70:30.

[0009] The double-faced woollen fabric is composed of a core layer and outer wrapping fibers, the angle between the carded noil fiber in the core layer and the yarn shaft is 10-15 degrees (the angle between the carded noil fiber in the core layer and the yarn shaft should not be too large or too small, too large angle will affect the parallel arrangement degree of the carded noil fiber in the yarn, too small angle is difficult to realize from the technical means, from the yarn structure angle, the smaller the angle, the lower the fiber combination degree in the yarn, the lower the yarn strength, and it is difficult to meet the requirements of the subsequent weaving when the angle is too small), the angle between the nylon fiber in the core layer and the yarn shaft is 20-30 degrees (the angle between the nylon fiber in the core layer and the yarn shaft affects the strength, hardness and other indexes of the yarn, the overall strength of the yarn is not enough when the angle is too small, the yarn is too hard when the angle is too large, which is not conducive to raising the wool), the total number of the outer wrapping fibers is 150-200 roots / m, the number of the carded noil fiber in the outer wrapping fibers is 30-50 roots / m, and the number of the nylon fiber in the outer wrapping fibers is 120-150 roots / m.

[0010] The most important factor affecting the parallel arrangement degree of the fiber in the yarn is the twisting degree of the fiber in the yarn, and the twist back angle β is the most representative of the twisting degree, which is defined as the yarn cylinder with a twist back and a radius of r is unfolded, and the twist degree of the yarn is Tt (twist / 10cm), and the twist back angle of the yarn can be expressed as tan β = 2πr / h, wherein h is the pitch of the twist back helix. Since the twist back angle and the radius of the yarn are related, the radius of the yarn is not easy to measure, and the twist back angle is not easy to measure. Compared with the ordinary rotor spinning process, the parallel arrangement degree of the fiber in the yarn of the double-faced woollen fabric rotor yarn of the present application is quite different under the same spinning process conditions, especially under the same twist conditions, and it is not direct enough to use the twist back angle, and it is also difficult to measure and calculate. Therefore, the present application uses the angle between the fiber and the yarn shaft to represent the parallel arrangement degree of the fiber in the yarn. The method for measuring the angle between the fiber and the yarn shaft in the present application is to fix the two ends of the yarn, apply a tension of 0.5-1 N, take a picture of the tensioned yarn, and process the obtained yarn image to draw the direction of the yarn shaft along the longitudinal center line of the yarn. Since the fiber is spirally distributed on the surface of the yarn, the direction of the fiber on the yarn body can be drawn along the direction of the spiral line, and the angle between the inclined line and the yarn shaft is the angle between the fiber and the yarn shaft.

[0011] As a preferred technical solution:

[0012] The double-faced woollen fabric rotor yarn as described above, the length of the carded noil fiber is 30-38 mm, and the diameter is 25-35 μm; the length of the antibacterial nylon fiber is 30-38 mm, and the diameter is 4-6 μm.

[0013] The double-faced woollen fabric rotor yarn as described above, the metric number of the double-faced woollen fabric rotor yarn is 15-20 Nm, and the twist is 400-550 twists / m.

[0014] The double-faced worsted yarn has a color of black for the combed noil and a color of white for the antibacterial nylon.

[0015] The application further provides a preparation method of the double-faced worsted yarn.

[0016] The minimum distance between the center point of the left fiber outlet and the center point of the fiber condensation groove is 20-22 mm.

[0017] The diameter of the rotor is 54 mm, the speed of the rotor is 30000-40000 r / min, and the negative pressure of the airflow in the rotor is 4000-5000 Pa.

[0018] The weight of the combed noil fiber strip is 20-25 g / 5 m, and the weight of the antibacterial nylon fiber strip is 20-25 g / 5 m.

[0019] The speed of the left carding roller is 6000-8000 r / min, and the type of the left carding roller is OS21 or a needle planting roller.

[0020] The speed of the right carding roller is 6000-8000 r / min, and the type of the right carding roller is OK61 or OK40.

[0021] The principle of the application is as follows:

[0022] The degree of parallel arrangement of fibers in yarn can be represented by the angle between the fiber and the yarn axis. The smaller the angle between the fiber and the yarn axis, the greater the degree of parallel arrangement of fibers in the yarn. In addition to the influence of twist, different spinning methods will also affect the degree of parallel arrangement of fibers in the yarn. Studies have shown that under the same twist factor conditions, the degree of parallel arrangement of fibers in yarn spun by the mule spinning method is the largest, followed by ring spinning, and the degree of parallel arrangement of fibers in yarn spun by the rotor spinning method is the worst due to the influence of airflow. Therefore, when developing double-faced cloth yarns using the rotor spinning method, the yarns usually need to have a low twist factor in order to improve the degree of parallel arrangement of fibers in the yarn. However, a decrease in twist factor will reduce the strength of the yarn, and in particular, when used as double-faced cloth yarns, the yarns are prone to linting. Therefore, in order to improve the strength of the yarn while ensuring the degree of parallel arrangement of fibers in the yarn, the raw material used to spin double-faced cloth yarns using the rotor spinning method is generally wool with a fiber length of more than 55 mm or cashmere with a fiber fineness of 15-18 μm.

[0023] In addition to the influence of twist on the degree of parallel arrangement of fibers in yarn, the distance between the fiber outlet of the fiber conveying channel and the fiber slip surface and the distance between the fiber outlet of the fiber conveying channel and the fiber condensation groove are also important influencing factors when spinning using the rotor spinning method. The principle is as follows: when spinning using the rotor spinning method, the fibers are fed from the fiber outlet of the fiber conveying channel under the action of airflow, and first pass through the fiber slip surface (or the inner wall of the rotor) before reaching the fiber condensation groove. Since the surface speed of the fiber slip surface is much higher than the speed of the airflow in the fiber conveying channel, there is a certain speed difference between the fiber slip surface and the fiber. When the fiber hits the fiber slip surface, it is stretched straight in the longitudinal direction, allowing the fiber to be arranged in parallel in the rotor condensation groove. At the same time, since the fiber is affected by the spiral negative pressure airflow in the rotor during its movement from the fiber outlet to the fiber slip surface, part of the fiber is wrapped around the outer surface of the yarn during spinning, forming wrapped fibers. Therefore, the rotor yarn has a layered structure with a core layer and an outer wrapped layer. The distance between the fiber outlet and the fiber slip surface, the speed of the rotor, the condition and size of the negative pressure airflow in the rotor will directly affect the degree of parallel arrangement of fibers in the core layer and the number of wrapped fibers.

[0024] Double comb rotor spinning technology is a rotor spinning technology developed in recent years. The principle of double comb rotor spinning is to feed the same or different raw materials by two different feed rollers, carding by two different left and right comb rollers, and feeding into the rotor to form yarn by two different fiber conveying channels. Double comb rotor spinning technology has great advantages in spinning colored yarn, slub yarn, blended yarn and other fancy yarns. The uniform distribution and state of fibers fed by different fiber conveying channels in the yarn are different from traditional rotor spinning, and the structure of the yarn is also different. The fiber outlets of the two fiber conveying channels used in the existing double comb rotor spinning technology have a certain angle between them, but the distance between the different fiber outlets and the fiber condensation groove and the fiber slip surface is the same as that of the traditional rotor spinning technology, and there is little difference. The uniformity of the distribution of fibers fed by different fiber conveying channels in the transverse and longitudinal directions of the yarn is different, and the degree of parallel arrangement of the two fibers in the longitudinal direction of the yarn and the number of outer wrapping fibers are not much different. Therefore, compared with traditional rotor spinning technology, although the distribution of fibers in the yarn and the structure of the yarn are different, the degree of straightness of the fibers in the yarn is not much different. It is verified by experiments that under the experimental conditions of rotor speed 40000r / min, rotor diameter 54mm, spinning 10sp, twist 450twist / m, the minimum distance between the center point of the fiber outlet of the fiber conveying channel of the traditional rotor spinning technology and the fiber slip surface is a, and the minimum distance between the center line of the fiber condensation groove is b. By changing the position of the fiber outlet of the double comb and the traditional rotor spinning, the overall distribution range of the angle between the fibers and the yarn axis in the spun rotor yarn and the range of the number of outer wrapping fibers are shown in the following table:

[0025]

[0026]

[0027] From the experimental data in the above table, it can be seen that for both traditional rotor spinning and double comb rotor spinning, the distance between the fiber outlet and the fiber slip surface and the fiber condensation groove can affect the parallel arrangement of the fibers in the yarn and the number of wrapping fibers, and the law of the influence is consistent. When the distance a is small, the parallel arrangement of the fibers is high, and the number of outer wrapping fibers is relatively small, so that the spun rotor yarn is softer and more fluffy, but the strength is low, and when used to weave double face fabric, it is easy to break, and the combination of fibers in the fabric after cutting is small, and easy to shed; when the distance a is large, the parallel arrangement of the fibers in the yarn is small, and the number of outer wrapping fibers is large, although the strength of the yarn is improved, but the yarn is hard and stiff, and it is not easy to raise after cutting.

[0028] The double-faced woollen fabric use rotor yarn is spun by the double combing rotor spinning technology, the combing noil and the antibacterial nylon are fed into the different feed rollers of the double combing rotor spinning device respectively, and are combed and transported into the rotor respectively, wherein the distance between the fiber outlet of the fiber conveying channel through which the combing noil passes and the fiber sliding surface in the rotor is small, is 3-5mm, and the distance between the fiber outlet and the fiber condensation groove is large, is 20-22mm; the distance between the fiber outlet of the fiber conveying channel through which the antibacterial nylon passes and the fiber sliding surface in the rotor is large, is 8-10mm, and the distance between the fiber outlet and the fiber condensation groove is small, is 15-17mm. The distance between the fiber outlet through which the combing noil passes and the fiber sliding surface is small, the combing noil fiber is subjected to the acceleration of the fiber sliding surface in advance, and the acceleration time is long, so that the combing noil fiber has good straightening parallelism in the fiber condensation groove, and because the distance between the fiber outlet of the combing noil and the fiber sliding surface is small, most of the combing noil in the yarn is distributed in the core layer of the yarn in parallel with the yarn shaft, the included angle between the combing noil in the core layer and the yarn shaft is distributed in the range of 10-15 degrees as a whole, the number of the combing noil fibers in the wrapped state is small, the number of the combing noil fibers in the wrapped state is 30-50 roots / m; the distance between the fiber outlet through which the antibacterial nylon passes and the rotor sliding surface is large, the spiral degree of the antibacterial nylon in the yarn is large, the included angle between the antibacterial nylon and the yarn shaft in the core layer of the yarn is distributed in the range of 20-30 degrees as a whole, and the number of the antibacterial nylon fibers in the wrapped state is large, is 120-150 roots / m. Therefore, the combing noil and the antibacterial nylon rotor yarn spun by the spinning method of the double-faced woollen fabric use rotor yarn has high parallel arrangement degree of the combing noil in the yarn, can meet the requirements of the weft yarn of the double-faced woollen fabric, and the antibacterial nylon provides necessary strength for the spun rotor yarn, the wrapped fibers also make the bonding strength between the combing noil fibers and the antibacterial nylon fibers high, so that the spinning method of the double-faced woollen fabric use rotor yarn solves the problem that the combing noil cannot be used to spin the double-faced woollen fabric use rotor yarn by the existing traditional rotor spinning technology or the double combing rotor spinning technology.

[0029] The double-faced woollen fabric use rotor yarn of the application uses the combing noil and the antibacterial nylon as raw materials, has low raw material cost, high parallel arrangement degree of the combing noil fibers in the yarn, and high bonding strength of the fibers in the yarn, can fully meet the requirements of the weft yarn of the double-faced woollen fabric, has good raising effect after cutting and is not easy to shed, and because it is the blending of the wool and the antibacterial nylon, has good antibacterial effect, can effectively solve the problem that the wool fabric is easy to breed bacteria. The preparation method of the double-faced woollen fabric use rotor yarn of the application is realized by the double combing rotor spinning technology, has simple spinning process and is easy to realize, has high yarn output, overcomes the limitation that the combing noil cannot be used to spin high-grade double-faced woollen fabric by the existing ring spinning or flyer spinning technology, expands the application range of the rotor spinning, and enhances the enterprise benefit.

[0030] Advantages

[0031] (1) The preparation method of the double-faced woollen yarn of the present application is realized by adopting the double combing rotor spinning technology, the spinning process is simple and easy to realize, and the yarn yield is high, which overcomes the limitation that the existing ring spinning or flyer spinning technology cannot spin the combed noil into high-grade double-faced woollen yarn, expands the application range of the rotor spinning, and enhances the enterprise benefits;

[0032] (2) The double-faced woollen yarn of the present application, which is made of combed noil and antibacterial nylon, has low raw material cost, high parallel arrangement degree of the combed noil fiber in the yarn, and high fiber bonding strength in the yarn, which can fully meet the requirements of the weft yarn for double-faced woollen fabric, has good pile cutting and raising effect, is not easy to shed, and has good antibacterial effect due to the blending of wool and antibacterial nylon, which can effectively solve the problem of easy bacterial growth of wool fabric. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a schematic diagram of the fiber conveying channel position of the present application;

[0034] In the figure: 1 - left fiber conveying channel, 2 - right fiber conveying channel, 3 - left fiber outlet, 4 - right fiber outlet, 5 - fiber sliding surface, 6 - fiber condensation groove. DETAILED DESCRIPTION

[0035] The present application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application. In addition, it should be understood that those skilled in the art can make various modifications or changes to the present application after reading the content taught by the present application, and these equivalent forms also fall within the scope defined by the claims attached hereto.

[0036] Example 1

[0037] A preparation method of a double-faced woollen yarn, specifically as follows:

[0038] (1) Adopting the double combing rotor spinning technology, first feeding the black combed noil fiber strip and the white antibacterial nylon fiber strip into the left feed roller and the right feed roller respectively;

[0039] Among them, the length of the combed noil fiber is 30mm, and the diameter is 35μm; the length of the antibacterial nylon fiber is 35mm, and the diameter is 4μm; the basis weight of the combed noil fiber strip is 20g / 5m, and the basis weight of the antibacterial nylon fiber strip is 25g / 5m;

[0040] (2) The materials (combed noil fiber and antibacterial nylon fiber) in step (1) are combed by left combing roller (rotating speed is 6000r / min, model is OS21) and right combing roller (rotating speed is 6000r / min, model is OK61) respectively;

[0041] (3) Figure 1 As shown, the material combed in step (2) is fed into a 54mm diameter rotating cup through the left fiber outlet 3 of the left fiber feeding channel 1 and the right fiber outlet 4 of the right fiber feeding channel 2.

[0042] Among them, the minimum distance of the line drawn from the center point of the left fiber outlet 3 along the direction parallel to the bottom of the cup to the fiber sliding surface 5 is 3mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber condensation tank 6 is 22mm, the minimum distance of the line drawn from the center point of the right fiber outlet 4 along the direction parallel to the bottom of the cup to the fiber sliding surface 5 is 8mm, and the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber condensation tank 6 is 17mm;

[0043] (4) The material in step (3) is spun in the rotor to obtain a double-faced fabric rotor yarn with a metric count of 15 Nm and a twist of 400 twists / m.

[0044] The speed of the rotating cup is 30,000 r / min, and the negative pressure of the airflow inside the rotating cup is 5,000 Pa.

[0045] The double-faced wool rotor yarn produced consists of a core layer and an outer wrapping fiber; the weight ratio of combed wool fibers and antibacterial nylon fibers in the double-faced wool rotor yarn is 70:30; the angle between the combed wool fibers and the yarn beam in the core layer is 10-12 degrees, and the angle between the nylon fibers and the yarn beam in the core layer is 20-25 degrees; the total number of outer wrapping fibers is 180 fibers / m, the number of combed wool fibers in the outer wrapping fibers is 40 fibers / m, and the number of nylon fibers in the outer wrapping fibers is 140 fibers / m.

[0046] Comparative Example 1

[0047] A method for preparing rotor yarn, the specific steps are basically the same as in Example 1, the difference being that in step (3), the minimum distance of the line drawn from the center point of the left fiber outlet 3 along the direction parallel to the bottom of the cup to the fiber sliding surface 5 is 8mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber cohesion groove 6 is 17mm, the minimum distance of the line drawn from the center point of the right fiber outlet 4 along the direction parallel to the bottom of the cup to the fiber sliding surface 5 is 8mm, and the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber cohesion groove 6 is 17mm.

[0048] The prepared rotor yarn is composed of a core layer and outer wrapping fibers; the weight ratio of the carded noil fiber and the antibacterial nylon fiber in the rotor yarn is 70:30; the included angle between the carded noil fiber and the yarn shaft in the core layer is 20-25 degrees, and the included angle between the nylon fiber and the yarn shaft in the core layer is 20-25 degrees; the total number of the outer wrapping fibers is 200 roots / m, the number of the carded noil fiber in the outer wrapping fibers is 60 roots / m, and the number of the nylon fiber in the outer wrapping fibers is 140 roots / m.

[0049] Comparing Example 1 with Comparative Example 1, it can be seen that the included angle between the carded noil fiber and the yarn shaft in the core layer of the rotor yarn of Comparative Example 1 is greater than that of Example 1, the straightness and parallelism of the carded noil fiber in the yarn is not as good as that of Example 1, and the number of the carded noil fiber in the outer wrapping fibers is more than that of Example 1, so that the combination between the carded noil fiber and the antibacterial nylon fiber of Comparative Example 1 is more compact, the spun yarn is harder, is not easy to cut pile, and is not easy to raise pile after cutting pile, and is not suitable for spinning double-faced wool fabric.

[0050] Example 2

[0051] A method for preparing a rotor yarn for double-faced wool, specifically as follows:

[0052] (1) using double combing rotor spinning technology, first feeding the black carded noil fiber strip and the white antibacterial nylon fiber strip into the left feeding roller and the right feeding roller respectively;

[0053] wherein the length of the carded noil fiber is 38 mm, and the diameter is 25 μm; the length of the antibacterial nylon fiber is 38 mm, and the diameter is 5 μm; the basis weight of the carded noil fiber strip is 25 g / 5 m, and the basis weight of the antibacterial nylon fiber strip is 20 g / 5 m;

[0054] (2) then combing the materials (carded noil fiber and antibacterial nylon fiber) in step (1) through the left combing roller (rotating speed is 8000 r / min, model is OS21) and the right combing roller (rotating speed is 8000 r / min, model is OK61);

[0055] (3) as shown in Figure 1 , feeding the materials combed in step (2) into the rotor cup with a diameter of 54 mm through the left fiber outlet 3 of the left fiber conveying channel 1 and the right fiber outlet 4 of the right fiber conveying channel 2 respectively;

[0056] Wherein, the minimum distance of the line made by the center point of the left fiber outlet 3 to the fiber sliding surface 5 in the direction parallel to the cup bottom is 5mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber condensation groove 6 is 20mm, the minimum distance of the line made by the center point of the right fiber outlet 4 to the fiber sliding surface 5 in the direction parallel to the cup bottom is 10mm, the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber condensation groove 6 is 15mm;

[0057] (4) Spinning the material in step (3) in the rotor cup to obtain the rotor yarn for double face woollen fabric with 18Nm of metric number and 450 twists / m of twist;

[0058] Wherein, the speed of the rotor cup is 40000r / min, and the negative pressure of the airflow in the rotor cup is 4000Pa.

[0059] The obtained rotor yarn for double face woollen fabric is composed of a core layer and outer wrapping fibers; the weight ratio of the carded noil fiber and the antibacterial nylon fiber in the rotor yarn for double face woollen fabric is 70:30; the included angle between the carded noil fiber and the yarn axis in the core layer is 10-14 degrees, and the included angle between the nylon fiber and the yarn axis in the core layer is 23-28 degrees; the total number of the outer wrapping fibers is 170 roots / m, the number of the carded noil fiber in the outer wrapping fibers is 35 roots / m, and the number of the nylon fiber in the outer wrapping fibers is 135 roots / m.

[0060] Example 3

[0061] A preparation method of a rotor yarn for double face woollen fabric, specifically as follows:

[0062] (1) Using double combing rotor spinning technology, first, feeding the black carded noil fiber strip and the white antibacterial nylon fiber strip into the left feed roller and the right feed roller respectively;

[0063] Wherein, the length of the carded noil fiber is 32mm, and the diameter is 32μm; the length of the antibacterial nylon fiber is 30mm, and the diameter is 6μm; the basis weight of the carded noil fiber strip is 21g / 5m, and the basis weight of the antibacterial nylon fiber strip is 21g / 5m;

[0064] (2) Then, combing the materials (carded noil fiber and antibacterial nylon fiber) in step (1) through the left combing roller (rotating speed is 6500r / min, model is OS21) and the right combing roller (rotating speed is 6500r / min, model is OK61) respectively;

[0065] (3) As shown in Figure 1 , feeding the materials combed in step (2) into the rotor cup with a diameter of 54mm through the left fiber outlet 3 of the left fiber conveying channel 1 and the right fiber outlet 4 of the right fiber conveying channel 2 respectively;

[0066] Wherein, the minimum distance of the line made by the center point of the left fiber outlet 3 to the fiber sliding surface 5 in the direction parallel to the cup bottom is 3.5mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber condensation groove 6 is 20.5mm, the minimum distance of the line made by the center point of the right fiber outlet 4 to the fiber sliding surface 5 in the direction parallel to the cup bottom is 9.5mm, the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber condensation groove 6 is 15.5mm;

[0067] (4) Spinning the material in step (3) in the rotor cup to obtain the rotor yarn for double face woollen fabric with 16Nm of metric number and 420 twists / m of twist;

[0068] Wherein, the speed of the rotor cup is 38000r / min, and the negative pressure of the airflow in the rotor cup is 4200Pa.

[0069] The obtained rotor yarn for double face woollen fabric is composed of a core layer and outer wrapping fibers; the weight ratio of the combed noil fiber and the antibacterial nylon fiber in the rotor yarn for double face woollen fabric is 70:30; the included angle between the combed noil fiber and the yarn axis in the core layer is 11-13 degrees, and the included angle between the nylon fiber and the yarn axis in the core layer is 22-26 degrees; the total number of the outer wrapping fibers is 175 roots / m, the number of the combed noil fiber in the outer wrapping fibers is 38 roots / m, and the number of the nylon fiber in the outer wrapping fibers is 137 roots / m.

[0070] Example 4

[0071] A method for preparing a rotor yarn for double face woollen fabric, specifically as follows:

[0072] (1) Using the double combing rotor spinning technology, first feeding the black combed noil fiber strip and the white antibacterial nylon fiber strip into the left feeding roller and the right feeding roller respectively;

[0073] Wherein, the length of the combed noil fiber is 34mm, and the diameter is 30μm; the length of the antibacterial nylon fiber is 32mm, and the diameter is 5.5μm; the basis weight of the combed noil fiber strip is 23g / 5m, and the basis weight of the antibacterial nylon fiber strip is 23g / 5m;

[0074] (2) Then, combing the materials (combed noil fiber and antibacterial nylon fiber) in step (1) through the left combing roller (rotating speed is 7500r / min, model is needle roller) and the right combing roller (rotating speed is 7500r / min, model is OK40) respectively;

[0075] (3) As shown in Figure 1 , feeding the materials combed in step (2) into the rotor cup with a diameter of 54mm through the left fiber outlet 3 of the left fiber conveying channel 1 and the right fiber outlet 4 of the right fiber conveying channel 2 respectively;

[0076] wherein the minimum distance of the straight line made from the center point of the left fiber outlet 3 to the fiber sliding surface 5 in the direction parallel to the bottom of the cup is 4.5mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber condensing groove 6 is 21.5mm, the minimum distance of the straight line made from the center point of the right fiber outlet 4 to the fiber sliding surface 5 in the direction parallel to the bottom of the cup is 8.5mm, and the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber condensing groove 6 is 16mm;

[0077] (4) spinning the material in the rotor cup in step (3) to obtain the rotor yarn for double face woollen fabric with 20Nm of metric number and 550 twist / m of twist;

[0078] wherein the speed of the rotor cup is 32000r / min, and the negative pressure of the airflow in the rotor cup is 4800Pa.

[0079] The obtained rotor yarn for double face woollen fabric is composed of a core layer and outer wrapping fibers; the weight ratio of the carded noil fiber and the antibacterial nylon fiber in the rotor yarn for double face woollen fabric is 70:30; the included angle between the carded noil fiber and the yarn axis in the core layer is 13-15 degrees, and the included angle between the nylon fiber and the yarn axis in the core layer is 25-30 degrees; the total number of the outer wrapping fibers is 190 roots / m, the number of the carded noil fiber in the outer wrapping fibers is 40 roots / m, and the number of the nylon fiber in the outer wrapping fibers is 150 roots / m.

[0080] Example 5

[0081] A method for preparing a rotor yarn for double face woollen fabric, specifically as follows:

[0082] (1) using double combing rotor spinning technology, first feeding the black carded noil fiber strip and the white antibacterial nylon fiber strip into the left feed roller and the right feed roller respectively;

[0083] wherein the length of the carded noil fiber is 35mm, and the diameter is 28μm; the length of the antibacterial nylon fiber is 35mm, and the diameter is 4.8μm; the basis weight of the carded noil fiber strip is 24g / 5m, and the basis weight of the antibacterial nylon fiber strip is 24g / 5m;

[0084] (2) then combing the material (carded noil fiber and antibacterial nylon fiber) in step (1) through the left combing roller (rotating speed is 7800r / min, model is needle roller) and the right combing roller (rotating speed is 7800r / min, model is OK40) respectively;

[0085] (3) as shown in Figure 1 , feeding the material combed in step (2) into the rotor cup with a diameter of 54mm through the left fiber outlet 3 of the left fiber conveying channel 1 and the right fiber outlet 4 of the right fiber conveying channel 2 respectively;

[0086] wherein the minimum distance of the straight line made from the center point of the left fiber outlet 3 to the fiber sliding surface 5 in the direction parallel to the bottom of the cup is 4mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber condensation groove 6 is 21mm, the minimum distance of the straight line made from the center point of the right fiber outlet 4 to the fiber sliding surface 5 in the direction parallel to the bottom of the cup is 9mm, and the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber condensation groove 6 is 16mm;

[0087] (4) spinning the material in the rotor cup in step (3) to obtain the rotor yarn for double face woollen fabric with the metric number of 17Nm and the twist of 440 twists / m;

[0088] wherein the speed of the rotor cup is 35000r / min, and the negative pressure of the airflow in the rotor cup is 4500Pa.

[0089] The obtained rotor yarn for double face woollen fabric is composed of a core layer and outer wrapping fibers; the weight ratio of the carded noil fiber and the antibacterial nylon fiber in the rotor yarn for double face woollen fabric is 70:30; the included angle between the carded noil fiber and the yarn axis in the core layer is 10-14 degrees, and the included angle between the nylon fiber and the yarn axis in the core layer is 23-28 degrees; the total number of the outer wrapping fibers is 190 roots / m, the number of the carded noil fiber in the outer wrapping fibers is 50 roots / m, and the number of the nylon fiber in the outer wrapping fibers is 140 roots / m.

[0090] Example 6

[0091] A method for preparing a rotor yarn for double face woollen fabric, specifically as follows:

[0092] (1) using the double combing rotor spinning technology, first feeding the black carded noil fiber strip and the white antibacterial nylon fiber strip into the left feed roller and the right feed roller respectively;

[0093] wherein the length of the carded noil fiber is 36mm, and the diameter is 26μm; the length of the antibacterial nylon fiber is 36mm, and the diameter is 5.2μm; the basis weight of the carded noil fiber strip is 22g / 5m, and the basis weight of the antibacterial nylon fiber strip is 22g / 5m;

[0094] (2) then combing the material (carded noil fiber and antibacterial nylon fiber) in step (1) through the left combing roller (rotating speed is 7000r / min, model is needle roller) and the right combing roller (rotating speed is 7000r / min, model is OK40) respectively;

[0095] (3) as shown in Figure 1 , feeding the material combed in step (2) into the rotor cup with a diameter of 54mm through the left fiber outlet 3 of the left fiber conveying channel 1 and the right fiber outlet 4 of the right fiber conveying channel 2 respectively;

[0096] Wherein, the minimum distance of the line made from the center point of the left fiber outlet 3 to the fiber sliding surface 5 in the direction parallel to the bottom of the cup is 4mm, the minimum distance between the center point of the left fiber outlet 3 and the center point of the fiber condensation groove 6 is 21mm, the minimum distance of the line made from the center point of the right fiber outlet 4 to the fiber sliding surface 5 in the direction parallel to the bottom of the cup is 9mm, the minimum distance between the center point of the right fiber outlet 4 and the center point of the fiber condensation groove 6 is 16.5mm;

[0097] (4) Spinning the material in step (3) in the rotor cup to obtain the rotor yarn for double face cloth with 19Nm of metric number and 500 twist / m of twist;

[0098] Wherein, the speed of the rotor cup is 36000r / min, and the negative pressure of the airflow in the rotor cup is 4600Pa.

[0099] The obtained rotor yarn for double face cloth is composed of a core layer and outer wrapping fibers; the weight ratio of the combed noil fibers and the antibacterial nylon fibers in the rotor yarn for double face cloth is 70:30; the angle between the combed noil fibers and the yarn axis in the core layer is 12-14 degrees, and the angle between the nylon fibers and the yarn axis in the core layer is 24-30 degrees; the total number of the outer wrapping fibers is 195 / m, the number of the combed noil fibers in the outer wrapping fibers is 45 / m, and the number of the nylon fibers in the outer wrapping fibers is 150 / m.

Claims

1. A two-faced hosiery spun yarn, characterized in that: The double-faced cloth is spun by mixing combing noil fibers and antibacterial nylon fibers, and the weight ratio of the combing noil fibers and the antibacterial nylon fibers in the double-faced cloth is 70:30; The double-faced cloth is spun by mixing combing noil fibers and antibacterial nylon fibers, and the weight ratio of the combing noil fibers and the antibacterial nylon fibers in the double-faced cloth is 70:30; The length of the combing noil fibers is 30-38 mm, and the diameter is 25-35 μm; the length of the antibacterial nylon fibers is 30-38 mm, and the diameter is 4-6 μm. The preparation method of the double-faced cloth is as follows: combing noil fiber strips and antibacterial nylon fiber strips are respectively fed into left feeding rollers and right feeding rollers by using double combing rotor spinning technology, and then the combing noil fiber strips and the antibacterial nylon fiber strips are respectively fed into a rotor through left fiber outlet and right fiber outlet after being combed by left combing rollers and right combing rollers, so that the double-faced cloth is spun. The minimum distance of the center point of the left fiber outlet to the fiber sliding surface is 3-5 mm, and the minimum distance between the center point of the left fiber outlet and the center point of the fiber condensation groove is 20-22 mm; the minimum distance of the center point of the right fiber outlet to the fiber sliding surface is 8-10 mm, and the minimum distance between the center point of the right fiber outlet and the center point of the fiber condensation groove is 15-17 mm. The diameter of the rotor is 54 mm, the speed of the rotor is 30000-40000 r / min, and the negative pressure of the airflow in the rotor is 4000-5000 Pa.

2. A double face hosiery yarn according to claim 1, characterized in that, The metric number of the double-faced cloth is 15-20 Nm, and the twist is 400-550 twists / m.

3. A double face hosiery yarn according to claim 1, characterized in that, The color of the combing noil is black, and the color of the antibacterial nylon is white.

4. A method of producing a double-sided woollen spun yarn for a tweed according to any one of claims 1 to 3, characterized in that, The preparation method of the double-faced cloth is as follows: combing noil fiber strips and antibacterial nylon fiber strips are respectively fed into left feeding rollers and right feeding rollers by using double combing rotor spinning technology, and then the combing noil fiber strips and the antibacterial nylon fiber strips are respectively fed into a rotor through left fiber outlet and right fiber outlet after being combed by left combing rollers and right combing rollers, so that the double-faced cloth is spun.

5. A method of producing a double face worsted yarn according to claim 4, characterized in that, The weight of the combing noil fiber strips is 20-25 g / 5 m, and the weight of the antibacterial nylon fiber strips is 20-25 g / 5 m.

6. A method of producing a double face worsted yarn according to claim 4, characterized in that, The speed of the left combing roller is 6000-8000 r / min, and the model of the left combing roller is OS21.

7. A method of producing a double face worsted yarn according to claim 4, characterized in that, The speed of the right combing roller is 6000-8000 r / min, and the model of the right combing roller is OK61 or OK40.

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