Warm-keeping yarn, spinning process thereof and warm-keeping fabric

Abstract

The invention provides a warm-keeping yarn, a spinning process thereof and a warm-keeping fabric, and belongs to the technical field of fabric weaving. The spinning process comprises the following steps: an opening and picking procedure: cotton fibers are subjected to plucking, cotton blending, opening, picking, cotton feeding and coiling treatment to obtain cotton rolls; a cotton carding process: feeding the cotton roll into a cotton layer, opening by a licker-in, removing impurities, and carding to obtain card slivers; drawing, namely feeding, combining, drafting, mixing and slivering the card slivers to obtain drawn slivers by drawing the card slivers first and then drawing the card slivers last; roving, wherein the drawn slivers are subjected to feeding, drafting, twisting, winding and forming treatment to be made into roving; in the spinning process, an air rotor device is additionally arranged on the basis of the ring spinning process, rough yarn is subjected to feeding, drafting, twisting, winding and forming treatment and the spooling process, and spun yarn is evenly wound on the surface of a bobbin. The in warm spinning technology is adopted, the heat preservation performance of the fabric is improved from the yarn perspective, and the fabric has the better heat preservation effect under the condition that the fabric reaches the same specification.

Description

Technical Field

[0001] The present invention belongs to the technical field of fabric weaving, and in particular relates to a thermal insulation yarn and a spinning process thereof, and a thermal insulation fabric. Background Art

[0002] With the evolution of fashion and the changes in people's living and working scenes in recent years, people's demand for light and warm base clothing has gradually increased. Since the thermal insulation performance of most thermal insulation materials on the market is closely related to the thickness of the material, good thermal insulation performance may inevitably give people a heavy and restrained feeling. Under the same thermal insulation effect, consumers will tend to choose lighter and thinner clothing. The most common thermal base fabrics on the market are sanded fabrics. This fabric has a significant thermal insulation effect because its sanded structure can retain more air. The fabric is mainly prepared by sanding process. This process is to rub six sand leather rollers, and the cloth surface has dense fluff, which gives the fabric a new style. At the same time, it reduces the thermal conductivity of the sanded fabric and increases the warmth retention and softness. However, this process is a post-processing process, the process is complicated, the sanded strength formed is low, and it is easy to have problems such as pilling.

[0003] In view of this, it is necessary to seek a new process to improve the above-mentioned problems in order to meet consumers' demand for warm base clothing that can be used in multiple scenarios and has the same warmth retention effect and is lighter and thinner. To this end, the present disclosure aims to improve the thermal insulation performance of the fabric from the perspective of yarn, and proposes a method for improving the thermal insulation effect of thermal fabrics through a spinning process. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a warming yarn and its spinning process, and a warming fabric.

[0005] In one aspect of the present disclosure, a spinning process for a warm yarn is provided.

[0006] The process includes:

[0007] In the cotton opening and cleaning process, the cotton fibers are sequentially processed through cotton grabbing, cotton blending, cotton opening, cotton cleaning, cotton feeding, and cotton rolling to obtain cotton rolls;

[0008] In the carding process, the cotton roll is fed into a cotton layer, opened by a licker-in roller, and impurities are removed, and then carded to obtain a uniform sliver;

[0009] The drawing process comprises the following steps: first drawing the head and then the tail, and feeding, drawing, mixing and striping the raw strips to obtain cooked strips;

[0010] The roving process is to feed, draw, twist, wind and shape the sliver to make roving;

[0011] The spinning process is to add an air rotor device to the ring spinning process, feed, draw, twist, wind and shape the roving to obtain the spun yarn;

[0012] The winding process is to evenly wind the spun yarn on the surface of the bobbin in a certain structural form.

[0013] Optionally, the spinning process includes:

[0014] The double rovings are fed into the spinning frame in parallel at a certain distance. The fed rovings are respectively passed through the front traction device to form two slivers. During the traction process, the fiber coagulation area is increased and the two slivers are initially coagulated by airflow.

[0015] The two slivers that have undergone preliminary drafting and cohesion are sent into the air rotor device. The two slivers are gathered and twisted together in the twisting zone of the rotor by the action of airflow to form spun yarn.

[0016] Optionally, in the spinning process, the front roller gauge is 15-20 mm, the rear roller gauge is 35-45 mm, the total drafting multiple is 45-50 times, the rear zone drafting multiple is 1.1-1.5 times, the twist coefficient is 310-320, the spindle speed is 14000-16000 r / min, and the jaw is 2-3 mm.

[0017] Optionally, in the spinning process, the rotor speed is 10000-30000 r / min, the combing roller speed is 4000-5000 r / min, the yarn delivery speed is 20-30 m / min, the feeding speed is 0.40-0.50 m / min, and the twist coefficient is 250-350.

[0018] Optionally, in the spinning process, the rotor speed is 20000 r / min, the combing roller speed is 4500 r / min, the yarn delivery speed is 25 m / min, the feeding speed is 0.42 m / min, and the twist coefficient is 300.

[0019] Optionally, in the cotton opening and cleaning process,

[0020] The cotton fibers are picked by an automatic cotton picking machine, wherein the beater speed of the automatic cotton picking machine is 500-800 rpm, the distance of the blade extending out of the rib is 2-5 mm, and the rotation speed of the trolley is 1.1-1.3 rpm;

[0021] The cotton fibers are mixed using a cotton mixing machine, wherein the U-shaped beater speed of the cotton mixing machine is 450-500 rpm, and the porcupine beater speed is 750-800 rpm;

[0022] The cotton fibers are opened by a cotton opener, wherein the beater speed of the cotton opener is 550-650 rpm, and the distances between the blade and the dust bar at the inlet, middle and outlet are 10-15 mm, 8-12 mm and 12-16 mm respectively;

[0023] A cotton feeder is used to feed the cotton fibers, wherein the speed of the corner nail cord of the cotton feeder is 50-70 m / min, the speed of the cotton averaging roller is 250-350 m / min, the speed of the cotton stripping beater is 400-450 m / min, and the speed of the cotton cleaning roller is 380-420 m / min;

[0024] The cotton fibers are rolled using a rolling machine, wherein the beater speed of the rolling machine is 950-980 rpm, and the speed of the rolling roller is 18-19 rpm.

[0025] Optionally, in the carding process, the cotton layer weight is 320-380g / m, the raw sliver weight is 3-4g / m, the speed of the cylinder is 300-350rpm, the speed of the licker-in roller is 650-700rpm, the speed of the cover plate is 70-90rpm, the doffer speed is 20-30rpm, the distance between the cylinder and the cover plate from the inlet to the outlet is 6-10mm, 5-9mm, 5-9mm, 6-10mm respectively, and the sliver output speed is 70-90m / min.

[0026] Optionally, in the drawing process, the speed of the first drawing is 280-320 m / min, and the speed of the last drawing is 220-250 m / min; and / or,

[0027] In the roving process, the total drafting multiple parameter is 8-9 times, the front zone drafting multiple parameter is 7-7.5, the rear zone drafting multiple parameter is 1.1-1.5, the roller spacing is 88*23*29, and the sliver delivery speed is 220-250m / min.

[0028] In another aspect of the present disclosure, a warming yarn is provided, wherein the warming yarn is produced by the spinning process described above.

[0029] Another aspect of the present disclosure provides a thermal insulation fabric, which is woven from the thermal insulation yarn described above.

[0030] The present invention discloses a kind of warm yarn and its spinning process and warm fabric. The spinning process includes: cotton opening and cleaning process, cotton fibers are subjected to cotton grabbing, cotton blending, cotton opening, cotton cleaning, cotton feeding and rolling to obtain cotton rolls; cotton combing process, the cotton rolls are subjected to cotton layer feeding, licker-in roller opening and impurity removal, combing process, to obtain uniform raw sliver; drawing process, the raw slivers are fed, combined, drawn, mixed and striped to obtain cooked slivers by drawing the head first and the end later; roving process, the cooked slivers are fed, drawn, twisted, wound and formed to make roving; spun yarn process, the roving is fed, drawn, twisted, wound and formed by adding an air rotor device on the basis of the ring spinning process, the roving is fed, drawn, twisted, wound and formed, and the winding process, the spun yarn is evenly wound on the surface of the bobbin in a certain structural form. The present invention adopts a new in-warm spinning process to improve the thermal insulation performance of the fabric from the perspective of yarn, so that the fabric can achieve a better warming effect under the same specifications. At the same time, it can also improve the restraint and heavy feeling on the human body without the need for complicated post-processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a flowchart of the spinning process of the warm yarn according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] It should be noted that the current thermal insulation fabrics are mainly made of sanding technology, which requires additional post-processing and is complicated. In view of this, the present embodiment improves the thermal insulation performance of the fabric from the perspective of yarn, so that the fabric can achieve a better warming effect under the same specifications. At the same time, it can also improve the restraint and heavy feeling on the human body, that is, by improving the spinning process, the thermal insulation rate of the yarn can be increased, thereby improving the thermal insulation effect of the fabric.

[0034] It should be understood that the traditional spinning process is cotton cleaning → carding → drawing

[0035] →Roving→Spinning→Winding, among which, in the spinning process, most of the ring spinning technologies such as compact spinning and sirotonic spinning are used. These processes are based on the twisting winding structure as the main core structure, with large process parameters. Higher twist will make the yarn harder and feel worse, and in some application scenarios (such as knitting), it may affect the softness and comfort of the fabric, and cannot achieve special functions such as improving the warmth effect. In addition, during the twisting and winding process, due to the limitations of its mechanical structure and principle, the production speed of this process is slow and the energy consumption is high. In view of this, this embodiment further optimizes other processes such as the spinning process. Please refer to the following records for specific contents.

[0036] like Figure 1 As shown, in one aspect of the present disclosure, a spinning process S100 of a warming yarn is provided, which specifically includes the following steps S110 to S160:

[0037] S110, cotton opening and cleaning process, cotton fibers are sequentially processed through cotton grabbing, cotton blending, cotton opening, cotton cleaning, cotton feeding, and cotton rolling to obtain cotton rolls.

[0038] 1) Use an automatic cotton plucker to grab cotton fibers from the cotton bale. The beater speed of the automatic cotton plucker is 500-800rpm, the distance that the blade extends out of the rib is 2-5mm, and the rotation speed of the trolley is 1.1-1.3rpm. Within this beater speed range, the cotton fibers can be effectively grabbed and the work efficiency is improved. Secondly, the appropriate distance that the blade extends out of the rib is more conducive to the blade grabbing the cotton fibers, while avoiding excessive cutting or damage to the fibers. In addition, the trolley rotation speed in the above range can ensure that the cotton plucker grabs the cotton fibers evenly on the cotton bale.

[0039] Of course, in other preferred embodiments, a pre-cleaning process can be added before the automatic cotton picking machine grabs the cotton fibers. For example, special cleaning equipment is used to perform preliminary treatment on the cotton bales, and larger impurities in the cotton bales, such as cotton seeds and leaf debris, are removed by airflow, mechanical beaters, etc. This can reduce the cleaning burden in the subsequent spinning process and reduce equipment loss.

[0040] In some other preferred embodiments, after the cotton grabbing machine grabs the cotton fibers, a fiber humidification or pretreatment area can be set up. For some cotton fibers that are prone to static electricity or are relatively dry, the humidity of the fibers can be increased by spray humidification, or the fibers can be pretreated with some fiber treatment agents to improve the performance of the fibers, reduce static electricity in the processing process, make the fibers easier to comb and stretch, reduce fiber damage and scattering, and improve the quality of the yarn.

[0041] 2) Use a mixed cotton opener to fully and evenly mix cotton fibers of different components. The speed of the U-shaped beater of the mixed cotton opener is 450-500rpm, and the speed of the porcupine beater is 750-800rpm. The U-shaped beater is mainly responsible for the preliminary opening and mixing of cotton fibers in the mixed cotton opener. When the speed is 450-500rpm, it can treat the cotton fibers more gently, avoiding excessive beating of cotton fibers due to excessive beating speed, reducing fiber damage and short lint.

[0042] 3) Use a cotton opener to further process the cotton fibers to ensure the uniformity of the raw materials and remove impurities, in preparation for subsequent spinning. The beater speed of the cotton opener is 550-650rpm, and the distances between the blade and the dust bar at the inlet, middle and outlet are 10-15mm, 8-12mm and 12-16mm respectively. At the inlet, when the cotton fibers just start to enter the cotton opener, there are more large cotton pieces. When the larger blade is at a distance of 10-15mm from the dust bar, the cotton fibers are allowed to enter the cotton opener more smoothly, preventing the cotton fibers from being blocked due to the small space at the inlet, and ensuring that the cotton fibers can smoothly enter the cotton opener for subsequent processing. During the intermediate processing, the cotton fibers have been loosened to a certain extent. At this time, reducing the distance between the blade and the dust bar (8-12mm) can make the cotton fibers better contact with the dust bar after being hit by the beater, which is conducive to removing impurities in the cotton fibers through the barrier effect of the dust bar during the loosening of the cotton fibers. At the exit, the cotton fibers that have been fully loosened and cleaned need to be discharged smoothly from the cotton opener. The distance between the blade and the dust bar should be appropriately increased (12-16mm) to provide a more spacious discharge space for the cotton fibers. This can prevent the cotton fibers from being squeezed or rubbed again due to the narrow space at the exit, ensuring that the processed cotton fibers are discharged evenly and smoothly.

[0043] In other preferred embodiments, a humidity control device may be installed at the entrance or inside the cotton opener to monitor and adjust the humidity of the cotton fibers entering the cotton opener in real time. Controlling the humidity of the cotton fibers helps to improve the cotton opening effect. Appropriate humidity can make the cotton fibers easier to loosen when hit by the beaters, reducing fiber damage. At the same time, at a certain humidity, the adhesion between impurities and fibers will change, which is more conducive to impurity removal.

[0044] 4) A cotton feeder is used to open, convey, and evenly lay the cotton fibers to form a uniform fiber raw material, wherein the speed of the cotton feeder corner nail cord is 50-70m / min, the speed of the cotton averaging roller is 250-350m / min, the speed of the cotton stripping beater is 400-450m / min, and the speed of the cotton cleaning roller is 380-420m / min.

[0045] 5) A lap machine is used to make cotton laps of a certain weight, length, uniform thickness and good appearance from the preliminarily treated cotton fibers, wherein the beater speed of the lap machine is 950-980rpm and the speed of the lap roller is 18-19rpm.

[0046] Of course, it should be understood that in other preferred embodiments, cleaning and combing equipment can also be used to directly connect the cotton opening and cleaning and combing processes to achieve integrated production. The cotton flow after the cotton opening and cleaning process is directly transported to the carding machine through a pipeline conveying system, avoiding the production of cotton rolls. The air flow is used to transport cotton fibers, and there is a corresponding cotton leveling device in the feeding part of the carding machine, which reduces fiber damage and uneven cotton rolls in the process of cotton roll production. The rolling and unwinding links are omitted, reducing the downtime caused by operations such as roll changing, thereby improving the production efficiency of the entire spinning process.

[0047] S120, a carding process, wherein the cotton roll is fed into a cotton layer, opened by a licker-in roller, and impurities are removed, and carded to obtain a uniform raw sliver.

[0048] Specifically, the cotton roll is placed on the cotton roll rack of the carding machine. The cotton layer of the cotton roll is guided by the cotton guide device so that it can smoothly enter the cotton feeding roller. The fed cotton layer reaches the licker-in area. The licker-in surface has a large number of saw teeth, which rotate at high speed. When the cotton layer contacts the licker-in, the saw teeth penetrate the cotton layer, and the high-speed rotation of the licker-in is used to tear the cotton block apart, breaking the tight cotton layer into small fiber bundles. The fibers opened by the licker-in enter the cylinder-doffer combing area, and the cylinder contacts the fibers sent by the licker-in. The needle cloth combs the fibers to further straighten and parallelize the fibers, and at the same time, the fiber bundles are broken into single fiber states. Among them, the cotton layer weight is 320-380g / m, the raw sliver weight is 3-4g / m, the speed of the cylinder is 300-350rpm, the speed of the licker-in roller is 650-700rpm, the speed of the cover plate is 70-90rpm, the doffer speed is 20-30rpm, the distance between the cylinder and the cover plate from the inlet to the outlet is 6-10mm, 5-9mm, 5-9mm, 6-10mm respectively, and the sliver output speed is 70-90m / min.

[0049] This embodiment adopts the process principle of "light weight, slow speed, small spacing, and strong combing" to comb the cotton roll into a single fiber state, and further remove impurities and non-spinnable short fibers, so that the fibers are parallel and straightened to produce cotton fiber strips that meet the requirements.

[0050] In other preferred embodiments, during the combing process, the thickness and uniformity of the cotton strips can be monitored in real time. If the cotton strips are uneven, the uniformity of the output cotton strips can be ensured by adjusting the device, so that the uniformity index of the cotton strips output by the combing process is reduced.

[0051] S130, the drawing process, adopts the method of drawing the head first and the end later, and feeds, draws, mixes, and forms the raw strips into strips to obtain cooked strips.

[0052] Specifically, the multiple raw strips obtained in step S120 are combined and fed into the drawing machine to form a cotton strip, the unevenness of the long segments of the strips is improved, and then the small cotton bundles are further separated into single fibers by drawing the strips to their original length and thinning them to their original length. The single fibers are then mixed by repeated combining to ensure that the mixed cotton components of the strips are uniform and the yarn quality is stable. After that, the cotton strips made by the drawing machine are regularly circled in the cotton strip barrel for use in the next process, so that the small cotton bundles are further separated into single fibers. In the drawing process, the first drawing is first and the last drawing is then adopted. The speed of the first drawing is 280-320m / min, and the speed of the last drawing is 220-250m / min. The first drawing is for mixing and forming, and the strip dryness is not guaranteed; the second drawing speed is slowed down, which helps to improve the parallelism and dryness of the noodles.

[0053] It should be understood that occasional uneven tension may occur when processing the raw sliver, resulting in slight inconsistent stretching of the raw sliver during the feeding process. To this end, in some preferred embodiments, rubber-coated rollers can be used to increase the uniformity of friction between the rollers and the raw sliver, ensuring that the raw sliver can be fed into the machine smoothly and evenly.

[0054] S140, roving process, feeding, drawing, twisting, winding and forming the sliver to make roving.

[0055] Specifically, the process principle of "light weight, slow speed, large gauge, heavy pressure" is adopted, and a part of the sliver obtained in the drawing process is made into a roving intermediate by drafting and twisting using a roving frame, and then the remaining sliver and the roving intermediate are fed into the roving frame together to make roving. Among them, the total drafting multiple parameter is 8-9 times, the front zone drafting multiple parameter is 7-7.5, the rear zone drafting multiple parameter is 1.1-1.5, the roller gauge is 88*23*29, and the sliver delivery speed is 220-250m / min.

[0056] S150, a spinning process, adopts an air rotor device added to the ring spinning process, and feeds, draws, twists, winds and forms the roving to obtain spun yarn.

[0057] Specifically, the process principle of "large gauge, heavy pressure, and large draft" is adopted to combine the compact siro spinning process with the rotor spinning process, and an air rotor device is added. The double roving is fed into the spinning frame in parallel at a certain distance. The double roving passes through the front traction device through the "large draft" process principle to draft the roving into two whiskers. During the traction process, the fiber condensation area is increased, and the whiskers are initially condensed by airflow, so that the fibers are close to each other and arranged to a certain extent, which is similar to the siro spinning process. The two whiskers that have been initially drafted and condensed are sent to the air rotor device. The two whiskers are converged and twisted together in the twisting zone of the air rotor device by the action of airflow. In the twisting zone of the air rotor device, the two whiskers are converged and twisted together by the action of airflow. The high-speed rotating airflow inside the rotor drives the whiskers to rotate, realize twisting, and form improved yarn, that is, spun yarn. In this process, the process principle of "large gauge and heavy pressure" helps to better control the movement and twisting effect of the fibers. After that, the twisted spun yarn is wound and formed. The spun yarn is regularly wound on the bobbin through the winding mechanism of the spinning frame to form a suitable package shape.

[0058] In some preferred embodiments, in the spinning process, the front roller gauge is 15-20 mm, the rear roller gauge is 35-45 mm, the total drafting multiple is 45-50 times, the rear zone drafting multiple is 1.1-1.5 times, the twist coefficient is 310-320, the spindle speed is 14000-16000 r / min, and the jaw is 2-3 mm.

[0059] In other preferred embodiments, in the spinning process, the rotor speed is 10000-30000 r / min, the combing roller speed is 4000-5000 r / min, the yarn delivery speed is 20-30 m / min, the feeding speed is 0.40-0.50 m / min, and the twist coefficient is 250-350.

[0060] As a further preferred scheme, in the spinning process, the rotor speed is 15000r / min, 20000r / min, 25000r / min, etc., the combing roller speed is 4000r / min, 4500r / min, 5000r / min, the yarn delivery speed is 20m / min, 25m / min, 30m / min, the feeding speed is 0.42m / min, 0.45m / min, 0.50m / min, and the twist coefficient is 250, 270, 300, 350, etc.

[0061] In this embodiment, a process combining compact siro spinning and rotor spinning is adopted, and the double roving is fully drawn and coagulated, so that the arrangement of the fibers in the yarn is more compact and orderly. The two slivers are twisted together, which increases the fiber cohesion of the yarn, thereby significantly improving the strength of the yarn.

[0062] It should be understood that compact siro spinning is a new type of ring spinning, which processes yarn by strengthening twisting. Siro yarn has a structure similar to ply yarn, with less hairiness, making the finished fabric have a smooth appearance, smooth hand feel, soft and elastic. Based on this, the present embodiment also adds a rotor spinning process on the basis of ring spinning, that is, a new air rotor device is added, thereby increasing the air content in the yarn, thereby achieving the effect of improving the thermal insulation effect. Based on this, the rotor speed, combing roller speed, yarn drawing speed, feeding speed, twist coefficient and other parameters of the present embodiment are lower than the currently used rotor spinning process parameters.

[0063] In this embodiment, the rotor device in the rotor spinning is used to increase the twist through air, and its rotor parameters are only half of the conventional parameters of the rotor spinning. This special parameter setting can make the airflow in the rotor more stable and uniform, so as to better control the coagulation and twisting process of the fiber. Smaller rotor parameters can reduce the speed and pressure of the airflow, reduce the damage of the fiber during the twisting process, and also improve the coagulation effect of the fiber. In addition, the high-speed airflow in the rotor runs in the opposite direction to the whisker, so that the cotton fiber can be further stretched, coagulated and twisted, and at the same time, the contact conditions and contact area between the air and the whisker are increased to ensure that the air content in the whisker is increased while twisting appropriately, so as to achieve the effect of ensuring both the air content of the yarn and the strength of the yarn. When the whisker enters the rotor, the reverse action of the high-speed airflow and the whisker can increase the friction and cohesion between the fibers, so that the fibers are more closely combined. At the same time, the reverse airflow can also make the fibers stay in the rotor for a longer time, so as to obtain more sufficient stretching and coagulation.

[0064] S160, winding process, the spun yarn is evenly wound on the surface of the bobbin in a certain structural form.

[0065] Specifically, the yarn quality is improved by splicing, winding, applying tension, removing impurities, etc. In this process, it is necessary to control the yarn CV value, cotton knots, details, etc., improve the single yarn strength, ensure the yarn wear resistance, reduce bad hairiness, make the yarn smoother, the fabric quality is high, the yarn quality is excellent, the structure is compact, and reach the excellent level of similar yarns.

[0066] In this embodiment, in-warm spinning technology is used to improve the thermal insulation of thermal fabrics, and an air rotor device is added on the basis of ring spinning. In this way, during the spinning process, the air content in the yarn is increased, thereby increasing the twist, thereby achieving the effect of ensuring both the air content and the strength of the yarn, thereby further improving the thermal insulation rate of the fabric.

[0067] Another aspect of the present disclosure provides a warm yarn, which is produced by the spinning process described above. For the specific process, please refer to the above description and will not be repeated here.

[0068] Another aspect of the present disclosure provides a thermal insulation fabric, which is woven from the yarn given above.

[0069] It should be understood that the present embodiment does not specifically limit the thermal insulation fabric, and it can be the fabric of thermal insulation clothing, for example, autumn and winter base clothing, or autumn and winter coats.

[0070] The spinning process of the warm yarn will be further described below in conjunction with specific embodiments:

[0071] Example 1

[0072] This example provides a spinning process for a warm yarn, including the following steps:

[0073] S1. Cotton opening and cleaning process: The cotton fibers are processed in sequence using an automatic cotton grabber, a mixed cotton opener, a cotton opener, a cotton feeder, and a lap forming machine.

[0074] ① The automatic plucking machine ensures uniform plucking, the beater speed is 700rpm, the distance of the blade extending from the rib is 4mm, and the rotation speed of the trolley is 1.125rpm;

[0075] ② The U-shaped beater speed of the mixed cotton opener is 490rpm, and the porcupine beater speed is 780rpm;

[0076] ③ The beater speed of the cotton opener is 600rpm, and the distances between the blade and the dust bar at the inlet, middle and outlet are 12mm, 10mm and 14mm respectively;

[0077] ④ Cotton feeding machine: can process cotton and chemical fiber, corner nail cord speed is 60m / min, cotton averaging roller speed is 300m / min, cotton stripping beater speed is 420m / min, cotton cleaning roller speed is 400m / min;

[0078] ⑤ The beater speed of the lap machine is 960rpm, and the speed of the lap roller is 18.54rpm.

[0079] S2. Combing process: the process principle of "light weight, slow speed, small gauge and strong combing" is adopted. The weight of the cotton layer is 360g / m, the weight of the raw sliver is 3.5g / m, the speed of the cylinder is 330rpm, the speed of the licker-in roller is 688rpm, the speed of the cover is 80rpm, the speed of the doffer is 26rpm, the gauges of the cylinder and the cover from inlet to outlet are 8mm, 7mm, 7mm and 8mm respectively, and the sliver output speed is 80m / min.

[0080] S3, drawing process: the raw noodles obtained in step S2 are first drawn at the head and then at the tail. The speed of drawing at the head is 300m / min, and the speed of drawing at the tail is 230m / min. The drawing at the head is for mixing and forming, and the dryness of the noodles is not guaranteed. Slowing down the speed of the second drawing helps to improve the parallelism and dryness of the noodles.

[0081] S4, roving process: adopt the process principle of "light weight, slow speed, large gauge, heavy pressure", total draft 8.5 times, front zone draft 7.02, back zone draft 1.21, roller gauge 88*23*29, jaw 4.5, and sliver delivery speed 232m / min.

[0082] S5. Spinning process: adopt the process principle of "large gauge, heavy pressure, and large draft", the front roller gauge is 18mm, the rear roller gauge is 40mm, the total draft is 48 times, the rear zone draft is 1.21 times, the twist coefficient is 316, the spindle speed is 15000r / min, the jaw is 2.5mm, and in the spinning process, add a rotor device in the rotor spinning, set the rotor speed to 20000r / min, the combing roller speed to 4500r / min, the yarn delivery speed to 25m / min, the feeding speed to 0.42m / min, and the twist coefficient to 300.

[0083] S6. Winding process: Control the CV value, cotton knots and details of the yarn, improve the strength of single yarn, ensure the wear resistance of yarn, reduce bad hairiness, make the yarn smoother, the fabric quality is high, the yarn quality is excellent, the structure is tight, and it reaches the excellent level of similar yarns.

[0084] Furthermore, the yarn prepared in this embodiment 1 is used as warp and weft to cross-weave to form a fabric, and the fabric formed in this embodiment 1 and a cotton jersey with the same gram weight are tested according to GB / T 11048-1989[A] test method for thermal insulation performance of textiles. The results show that the thermal insulation rate test value of the fabric in this embodiment 1 is about 24%, and the thermal insulation rate test value of the cotton jersey with the same gram weight is about 20%. Compared with the cotton jersey, the thermal insulation rate of the fabric obtained in this embodiment 1 is increased by about 4%.

[0085] Example 2

[0086] This example provides a spinning process for a warm yarn, including the following steps:

[0087] S1. Cotton opening and cleaning process: using an automatic cotton plucker, a mixed cotton opener, a cotton opener, a cotton feeder, and a lap forming machine in sequence, the process is the same as that of Example 1.

[0088] S2, carding process, this process is the same as that in Example 1.

[0089] S3, drawing process, this process is the same as that in Example 1.

[0090] S4, roving process, this process is the same as that in Example 1.

[0091] S5, spinning process: the front roller gauge is 15mm, the rear roller gauge is 35mm, the total drafting multiple is 45 times, the rear zone drafting multiple is 1.1 times, the twist coefficient is 310, the spindle speed is 14000r / min, the jaw is 2mm, and in the spinning process, add a rotor device in the rotor spinning, set the rotor speed to 10000r / min, the combing roller speed to 4000r / min, the yarn delivery speed to 20m / min, the feeding speed to 0.40m / min, and the twist coefficient to 250.

[0092] S6, winding process: the same as in Example 1.

[0093] Furthermore, the yarn prepared in this embodiment 1 is used as warp and weft to cross-weave to form a fabric, and the fabric formed in this embodiment 2 and the cotton jersey with the same gram weight are tested according to GB / T 11048-1989[A] test method for thermal insulation performance of textiles. The results show that the test value of the thermal insulation rate of the fabric in this embodiment 2 is about 25%, and the test value of the thermal insulation rate of the cotton jersey with the same gram weight is about 20%. Compared with the cotton jersey, the thermal insulation rate of the fabric obtained in this embodiment 1 is increased by about 5%.

[0094] Example 3

[0095] This example provides a spinning process for a warm yarn, including the following steps:

[0096] S1. Cotton opening and cleaning process: using an automatic cotton plucker, a mixed cotton opener, a cotton opener, a cotton feeder, and a lap forming machine in sequence, the process is the same as that of Example 1.

[0097] S2, carding process, this process is the same as that in Example 1.

[0098] S3, drawing process, this process is the same as that in Example 1.

[0099] S4, roving process, this process is the same as that in Example 1.

[0100] S5, spinning process: the front roller gauge is 20mm, the rear roller gauge is 45mm, the total drafting multiple is 50 times, the rear zone drafting multiple is 1.5 times, the twist coefficient is 320, the spindle speed is 16000r / min, the jaw is 3mm, and, in the spinning process, add a rotor device in the rotor spinning, set the rotor speed to 20000r / min, the combing roller speed to 5000r / min, the yarn delivery speed to 30m / min, the feeding speed to 0.50m / min, and the twist coefficient to 350.

[0101] S6, winding process: the same as in Example 1.

[0102] Furthermore, the yarn prepared in this embodiment 1 is used as warp and weft to cross-weave to form a fabric, and the fabric formed in this embodiment 3 and the cotton jersey with the same gram weight are tested according to GB / T 11048-1989[A] test method for thermal insulation performance of textiles. The results show that the thermal insulation rate test value of the fabric in this embodiment 3 is about 22%, and the thermal insulation rate test value of the cotton jersey with the same gram weight is about 20%. Compared with the cotton jersey, the thermal insulation rate of the fabric obtained in this embodiment 1 is increased by about 2%.

[0103] Comparative Example 1

[0104] This example provides a spinning process for a warm yarn, including the following steps:

[0105] S1. Cotton opening and cleaning process: using an automatic cotton plucker, a mixed cotton opener, a cotton opener, a cotton feeder, and a lap forming machine in sequence, the process is the same as that of Example 1.

[0106] S2, carding process, this process is the same as that in Example 1.

[0107] S3, drawing process, this process is the same as that in Example 1.

[0108] S4, roving process, this process is the same as that in Example 1.

[0109] S5, spinning process: This process is the same as that of Example 1, except that the air rotor device is not added.

[0110] S6, winding process: the same as in Example 1.

[0111] Furthermore, the yarn prepared in Example 1 is used as warp and weft to cross-weave to form a fabric, and the fabric formed in this comparative example 1 is tested according to GB / T 11048-1989[A] test method for thermal insulation performance of textiles. The results show that the test value of the thermal insulation rate of the fabric in this comparative example 1 is about 20%, which is close to the test value of the thermal insulation rate of the cotton jersey with the same gram weight.

[0112] In summary, the thermal insulation rate of the fabrics of Examples 1-3 is higher than that of the fabric of Comparative Example 1, and is also higher than the thermal insulation rate of the cotton jersey with the same gram weight. In addition, the thermal insulation rate of the fabric of Example 2 is better than that of Example 1, and the thermal insulation rate of the fabric of Example 3 is worse than that of Example 1.

[0113] The present disclosure provides a warm yarn and a spinning process thereof, and a warm fabric, which have the following beneficial effects compared with the prior art:

[0114] First, the in-warm technology used in the present disclosure is to increase the air content in the yarn during the spinning and twisting process, that is, in the yarn twisting process, by slowly adding air, the air content in the gaps between the fibers is effectively increased, thereby improving the warmth retention of the fabric;

[0115] Second, increasing the air content between yarns when weaving fabrics helps to improve the fluffiness of the fabric. Under the same fabric specifications, fabrics treated with the in warm yarn process are warmer; and under the same warmth conditions, fabrics treated with the in warm yarn process are lighter and thinner.

[0116] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A spinning process for a warm yarn, characterized in that: The spinning process comprises: In the cotton opening and cleaning process, the cotton fibers are sequentially processed through cotton grabbing, cotton blending, cotton opening, cotton cleaning, cotton feeding, and cotton rolling to obtain cotton rolls; In the carding process, the cotton roll is fed into a cotton layer, opened by a licker-in roller, and impurities are removed, and then carded to obtain a uniform sliver; The drawing process comprises the following steps: first drawing the head and then the tail, and feeding, drawing, mixing and striping the raw strips to obtain cooked strips; The roving process is to feed, draw, twist, wind and shape the sliver to make roving; The spinning process is to add an air rotor device to the ring spinning process, feed, draw, twist, wind and shape the roving to obtain the spun yarn; In the winding process, the spun yarn is evenly wound on the surface of the bobbin in a certain structural form.

2. The spinning process of the warm yarn according to claim 1, characterized in that: The spinning process comprises: The double rovings are fed into the spinning frame in parallel at a certain distance. The fed rovings are respectively passed through the front traction device to form two slivers. During the traction process, the fiber coagulation area is increased and the two slivers are initially coagulated by airflow. The two slivers that have undergone preliminary drafting and cohesion are sent into the air rotor device. The two slivers are gathered and twisted together in the twisting zone of the rotor by the action of airflow to form spun yarn.

3. The spinning process of the warm yarn according to claim 2, characterized in that: In the spinning process, the front roller gauge is 15-20mm, the rear roller gauge is 35-45mm, the total drafting multiple is 45-50 times, the rear zone drafting multiple is 1.1-1.5 times, the twist coefficient is 310-320, the spindle speed is 14000-16000r / min, and the jaw is 2-3mm.

4. The spinning process of the warm yarn according to claim 2, characterized in that: In the spinning process, the rotor speed is 10000-30000 r / min, the combing roller speed is 4000-5000 r / min, the yarn delivery speed is 20-30 m / min, the feeding speed is 0.40-0.50 m / min, and the twist coefficient is 250-350.

5. The spinning process of the warm yarn according to claim 4, characterized in that: In the spinning process, the rotor speed is 20000 r / min, the combing roller speed is 4500 r / min, the yarn delivery speed is 25 m / min, the feeding speed is 0.42 m / min, and the twist coefficient is 300.

6. The spinning process of the warm yarn according to claim 1, characterized in that: In the cotton opening and cleaning process, The cotton fibers are picked by an automatic cotton picking machine, wherein the beater speed of the automatic cotton picking machine is 500-800 rpm, the distance of the blade extending out of the rib is 2-5 mm, and the rotation speed of the trolley is 1.1-1.3 rpm; The cotton fibers are mixed using a cotton mixing machine, wherein the U-shaped beater speed of the cotton mixing machine is 450-500 rpm, and the porcupine beater speed is 750-800 rpm; The cotton fibers are opened by a cotton opener, wherein the beater speed of the cotton opener is 550-650 rpm, and the distances between the blade and the dust bar at the inlet, middle and outlet are 10-15 mm, 8-12 mm and 12-16 mm respectively; A cotton feeder is used to feed the cotton fibers, wherein the speed of the corner nail cord of the cotton feeder is 50-70 m / min, the speed of the cotton averaging roller is 250-350 m / min, the speed of the cotton stripping beater is 400-450 m / min, and the speed of the cotton cleaning roller is 380-420 m / min; The cotton fibers are rolled using a rolling machine, wherein the beater speed of the rolling machine is 950-980 rpm, and the speed of the rolling roller is 18-19 rpm.

7. The spinning process of the warm yarn according to claim 1, characterized in that: In the carding process, the cotton layer weight is 320-380g / m, the raw sliver weight is 3-4g / m, the speed of the cylinder is 300-350rpm, the speed of the licker-in roller is 650-700rpm, the speed of the cover plate is 70-90rpm, the doffer speed is 20-30rpm, the distance between the cylinder and the cover plate from the inlet to the outlet is 6-10mm, 5-9mm, 5-9mm, 6-10mm respectively, and the sliver output speed is 70-90m / min.

8. The spinning process of the warm yarn according to claim 1, characterized in that: In the drawing process, the speed of the first drawing is 280-320 m / min, and the speed of the last drawing is 220-250 m / min; and / or, In the roving process, the total drafting multiple parameter is 8-9 times, the front zone drafting multiple parameter is 7-7.5, the rear zone drafting multiple parameter is 1.1-1.5, the roller spacing is 88*23*29, and the sliver delivery speed is 220-250m / min.

9. A warm yarn, characterized in that: The warm yarn is produced by the spinning process described in any one of claims 1-8.

10. A thermal insulation fabric, characterized in that: The thermal insulation fabric is woven from the thermal insulation yarn described in claim 9.

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