Method and device for down-processing fabric

Abstract

The present disclosure provides a method and apparatus for down-finishing fabrics. The method comprises: performing a down-finishing treatment on the pretreated fabric by sanding the front side and napping the back side; performing a double-sided carding and fluffing treatment using a carding machine; performing a trimming treatment on the back side using a shearing machine; and performing a down-finishing treatment using a Venturi-effect air beater. Through the synergistic effects of multiple steps, this method achieves deep structural transformation of the fabric fibers, imparting down-like fluffiness and warmth to the fabric, addressing the poor warmth retention and low fluffiness issues of fabrics in related technologies.

Description

Technical Field

[0001] The present disclosure relates to the technical field of textile processing, and in particular to a method and device for down-forming fabrics. Background Art

[0002] In the field of textile processing technology, various technical methods are commonly used to improve the thermal insulation performance of fabrics. Traditional thermal insulation fabric processing methods mainly include natural down filling, chemical fiber filling, and surface raising technology.

[0003] While natural down provides excellent warmth, it's also expensive and can raise animal welfare concerns. Chemical fiber filling, such as polyester, is relatively inexpensive but significantly inferior to natural down in terms of warmth.

[0004] Related technologies also include methods for treating the surface of fabrics using a raising process. This method mechanically creates a fuzzy surface to enhance thermal insulation. However, this traditional raising process focuses solely on the surface effect, and the processing equipment is dispersed, resulting in a discontinuous process.

[0005] In summary, the traditional raising process can only form a simple fluffy effect on the surface of the fabric, which has poor warmth retention. In addition, the existing process is difficult to achieve a comprehensive improvement in warmth retention and fluffiness at the same time. Summary of the Invention

[0006] In view of this, the present disclosure provides a method and device for down-feathering fabrics, which solve the problems in the prior art of poor thermal insulation, low fluffiness and easy collapse of fabrics.

[0007] In one aspect, an embodiment of the present disclosure provides a method for down-feathering a fabric, comprising:

[0008] Get pre-treated fabrics;

[0009] The pretreated fabric is subjected to a hair-feathering treatment to obtain a hair-feathered fabric; wherein the front side of the pretreated fabric is subjected to a sanding treatment, and the back side of the pretreated fabric is subjected to a treatment using a plurality of series-connected hair-feathering machines, each hair-feathering machine being equipped with a preset number of barbed needles;

[0010] The feathered fabric is subjected to surface combing by a carding machine to obtain a fluffed fabric; the surface combing includes backside combing;

[0011] Using a shearing machine to process the reverse side of the fluffed fabric to obtain an ordered fabric;

[0012] The ordered fabric is treated with a Venturi effect air beater to obtain a velvet fabric; the velvet fabric undergoes a fiber microstructure change;

[0013] The velvet-treated fabric is subjected to shaping treatment to obtain a finished fabric.

[0014] In one embodiment, obtaining a pretreated fabric includes:

[0015] Performing a mixing tank treatment on the fabric to be processed to obtain a uniform fabric;

[0016] performing heat treatment on the homogenized fabric to obtain heat-treated fabric;

[0017] Performing a pre-forming treatment on the fabric after the heat treatment to obtain a pre-formed fabric;

[0018] Dyeing the pre-shaped fabric to obtain a dyed fabric;

[0019] After the dyed fabric is dehydrated and dried, an auxiliary agent is added to fix the fabric to obtain the pretreated fabric.

[0020] In one embodiment, a double-sided carding process is performed using a carding machine, comprising:

[0021] A carding unit with a first density carding card clothing is configured, and an ultrasonic vibration device is used to assist in performing a first carding treatment on the feathered fabric to obtain a first carded fabric;

[0022] A middle combing unit is provided with a second density carding clothing, and a combing direction and force are controlled at a preset temperature to perform a second combing treatment on the fabric after the first combing to obtain a second combed fabric;

[0023] A combing unit with a third density carding clothing is configured, and combing parameters are adjusted through a precision tension control system to perform precision combing on the fabric after the second combing to obtain the fluffy fabric.

[0024] In one embodiment, a double-sided carding process is performed using a carding machine, comprising:

[0025] The feathered fabric is subjected to hot air flow treatment by a hot air flow treatment unit to obtain a heat-treated fabric, wherein the hot air flow is ejected from an annular nozzle;

[0026] The heat-treated fabric is subjected to cold air flow treatment by a cold air flow treatment unit to obtain cooled fabric, wherein the cold air flow is sprayed at a first pressure;

[0027] A pulse airflow is applied to the cooled fabric through a pulse airflow generator to obtain the fluffed fabric, wherein the peak pressure of the pulse airflow is the second pressure.

[0028] In one embodiment, the ordered fabric is processed using a Venturi effect air beater, comprising:

[0029] Passing the ordered fabric through a venturi tube, whereby the pressure inside the tube is reduced and puffed under the action of high-speed airflow;

[0030] Controlling the fabric to collide with the grid multiple times, so that the fabric yarn and hairiness are bent multiple times;

[0031] Stretching and squeezing are applied to the fabric to deform the fibers, yarns and fabric structure, thereby obtaining the velveted fabric.

[0032] In one embodiment, the ordered fabric is processed using a Venturi effect air beater, comprising:

[0033] conveying the ordered fabric at a first speed at an inlet end of the venturi tube;

[0034] conveying the web at a second velocity through the venturi throat, wherein the second velocity is greater than the first velocity;

[0035] The fabric is conveyed at a third speed at the outlet of the venturi tube and collides with the grid, wherein the third speed is less than the second speed and greater than the first speed;

[0036] The first speed is 5-8 m / min, the second speed is 15-20 m / min, and the third speed is 10-12 m / min.

[0037] In one embodiment, the pretreated fabric is subjected to a hairiness treatment, comprising:

[0038] The front side of the pretreated fabric is subjected to sanding treatment by controlling the sanding speed to obtain a front-treated fabric;

[0039] The back side of the fabric after the front side treatment is subjected to napping treatment by using a plurality of napping machines connected in series with barbed needles to obtain the feathered fabric.

[0040] In one embodiment, the back side of the fluffed fabric is processed using a shearing machine, comprising:

[0041] The fluffed fabric is sheared by a shearing machine with a specific blade spacing and cutting angle set, and the shearing height is controlled to obtain the ordered fabric.

[0042] In one embodiment, after obtaining the finished fabric, the method further comprises:

[0043] Collecting test data of the finished fabric, the test data including data on bulk, warmth retention, hand feel, and appearance uniformity;

[0044] The test data is compared and analyzed with the preset quality standards to generate quality inspection results.

[0045] On the other hand, the present disclosure also provides a device for down-feathering fabrics, comprising:

[0046] A hairiness treatment module is used to obtain a pre-treated fabric; perform a hairiness treatment on the pre-treated fabric to obtain a hairiness-treated fabric; wherein the front side of the pre-treated fabric is subjected to a sanding treatment, and the back side of the pre-treated fabric is subjected to a plurality of series-connected hair-pulling machines, each hair-pulling machine being equipped with a preset number of barbed needles;

[0047] A fluffing treatment module is used to comb the surface of the feathered fabric using a carding machine to obtain a fluffed fabric; the surface combing includes back combing;

[0048] An ordering processing module, configured to process the reverse side of the fluffed fabric using a shearing machine to obtain an ordered fabric;

[0049] A velveting treatment module is used to treat the ordered fabric with a Venturi effect air beater to obtain a velveted fabric; the velveted fabric undergoes a fiber microstructure change;

[0050] The post-finishing module is used to perform shaping treatment on the fleece-finished fabric to obtain finished fabric.

[0051] By adopting any of the above aspects or any implementation methods of any aspect provided by the embodiments of the present disclosure, the deep structural transformation of the fabric fibers is achieved through the synergistic effect of multiple processes, thereby improving the fluffiness and warmth retention of the fabric; in addition, a Venturi effect air beating machine is used for air beating to obtain a three-dimensional fluff effect.

[0052] In addition, by precisely controlling the parameters of each process, the stability and consistency of product quality are ensured; and the embodiment of the present disclosure establishes a complete process flow system to achieve continuous production.

[0053] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the technical solutions of the present disclosure.

[0054] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. The drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to illustrate the technical solutions of the present disclosure. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without inventive effort.

[0056] Figure 1 A schematic diagram of a process for down-feathering a fabric according to an embodiment of the present disclosure;

[0057] Figure 2 Detailed flowchart of the pre-processing stage in the embodiment of the present disclosure;

[0058] Figure 3 Schematic diagram of multi-stage combing in an embodiment of the present disclosure;

[0059] Figure 4 A schematic diagram of composite airflow processing in an embodiment of the present disclosure;

[0060] Figure 5 This is a block diagram of the module composition of the fabric down processing device in the embodiment of the present disclosure. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the disclosure for which protection is sought, but merely represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0062] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0063] The term "and / or" herein simply describes an association relationship, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, and the existence of B alone. In addition, the term "at least one" herein refers to any combination of at least two of any one or more of a plurality of items. For example, "at least one of A, B, and C" can represent any one or more elements selected from the set consisting of A, B, and C.

[0064] like Figure 1 As shown, the embodiment of the present disclosure provides a method for down-feathering fabric, comprising the following steps:

[0065] S101: Obtain pre-treated fabric.

[0066] In the embodiment of the present disclosure, the purpose of the pretreatment stage is to provide a fabric foundation with uniform texture and stable performance for the subsequent down-feathering process.

[0067] Specifically, if Figure 2 As shown, pre-processing may include the following steps:

[0068] S1.1: The fabric to be processed is subjected to a mixing tank treatment to obtain a uniform fabric.

[0069] Here, bath preparation is a fundamental step in fabric processing, aimed at improving fabric uniformity. In this step, appropriate bath preparation parameters are selected based on the specific composition and characteristics of the fabric. By adjusting the bath ratio, temperature, and mechanical force, impurities and oil stains are removed from the fabric while achieving uniform physical properties. During the bath preparation process, special attention must be paid to controlling the intensity of the mechanical force to avoid damage to the fabric.

[0070] S1.2: subjecting the homogenized fabric to a heat-treated fabric.

[0071] Here, steaming is a special heat-moisture treatment process primarily designed to improve the fabric's internal structure. During this step, the high-temperature steam imparts a degree of mobility to the fiber's molecular chains, helping to release internal stress. This process is crucial for enhancing the subsequent down-finishing process by enhancing the fiber's plasticity.

[0072] Specifically, heat treatment can be performed at a high temperature of 80°C, which is ideal for achieving specific effects on fabrics during the treatment process. For fabric treatments requiring specific chemical reactions or physical changes, 80°C provides the appropriate energy for these reactions, promoting interaction between the additive and the fabric fibers. Furthermore, this temperature allows moisture and other volatile substances in the fabric to evaporate or volatilize at an appropriate rate, while preventing damage to the fabric caused by excessive temperatures, such as fiber deformation or color change. The treatment duration can be set to 30 minutes. Maintaining the temperature at 80°C for 30 minutes allows the fabric sufficient time to complete the treatment process. During this 30-minute period, the additive can fully penetrate the fabric fibers or take effect on the surface, resulting in, for example, a softer feel and improved wrinkle resistance. If the treatment duration is too short, the additive may not fully function, failing to achieve the desired treatment effect. However, if the treatment duration is too long, the fabric may be over-treated, leading to undesirable effects such as reduced strength and a poorer feel.

[0073] S1.3: performing a pre-forming treatment on the fabric after the heat treatment to obtain a pre-formed fabric.

[0074] Here, the purpose of pre-setting is to stabilize the size of the fabric and provide a stable process basis for subsequent processing. During the pre-setting process, the fabric obtains initial morphological stability through the combined action of thermal energy and mechanical force. It should be noted that the temperature and time parameters of pre-setting can be adjusted according to the specific composition of the fabric to obtain the best processing effect. For example, pre-setting can be performed at a temperature of 195°C. At such a high temperature, the fiber molecular segments in the fabric obtain enough energy to start violent movement, and the originally disordered molecular chains can be rearranged to a certain extent. The speed of the fabric running in the pre-setting equipment can be controlled at 20m / min. At this speed, the fabric can stay in the high temperature area for a suitable time, so that the fiber molecules have enough time to undergo thermal movement and rearrangement, thereby achieving the pre-setting effect.

[0075] S1.4: Dyeing the pre-shaped fabric to obtain a dyed fabric.

[0076] In practice, the dyeing process not only imparts the desired color to the fabric but also further improves its internal structure. During the dyeing process, the penetration of dye molecules affects the fiber's microstructure, an influence that needs to be accounted for in subsequent steps. Furthermore, the dyeing process should be tailored to the requirements of subsequent down-finishing, avoiding the use of dyes and auxiliaries that could affect the down-finishing effect.

[0077] Furthermore, research has shown that when dyeing acrylic wool fabrics, the dyeing environment temperature can be controlled at 95°C. This temperature helps the dye molecules better bond with acrylic wool fibers because higher temperatures intensify the movement of fiber molecular segments and increase the voids within the fibers, providing more channels and space for the dye molecules to enter, thereby improving the dyeing effect and color fastness. The dyeing process can be maintained at 95°C for 30 minutes. During this time, the dye molecules have ample time to diffuse into the fiber and undergo a series of reactions with the fiber, including adsorption, diffusion, and fixation, resulting in uniform dye adhesion and achieving a good dyeing effect. If the time is too short, the dye may not fully dye the fiber, resulting in a dull and uneven color. If the time is too long, it may damage the fiber and affect the performance of the fabric.

[0078] In addition, for dyeing cotton fabrics, the temperature can be set to 60°C. This is because the structure and properties of cotton fibers are different from those of acrylic wool, and their sensitivity to temperature and the way they bind to dyes are also different. A temperature of 60°C can not only effectively combine the dye molecules with the cotton fibers, but also avoid damage to the cotton fibers caused by excessively high temperatures, while also ensuring the economy and efficiency of the dyeing process. Specifically, dyeing can be carried out at 60°C for 60 minutes. Because the dyeing process of cotton fibers is relatively complex, a longer time is required to ensure that the dye fully penetrates the interior of the fiber and completes the color fixation process. A dyeing time of 60 minutes can achieve better adsorption and fixation of the dye on the cotton fibers, thereby obtaining a uniform and bright color.

[0079] S1.5: After dehydrating and drying the dyed fabric, an auxiliary agent is added to shape the fabric to obtain the pretreated fabric.

[0080] Here, dehydration and drying are performed, and the fabric is then shaped with additives. The key to this step is controlling the fabric's moisture content and internal stress. During dehydration, excessive compression that could cause deformation of the fabric is crucial. During the drying process, temperature uniformity is crucial to prevent local overheating. When adding additives to shape the fabric, the selected additives should be compatible with the subsequent down-forming process and exhibit good durability. Through these treatments, the fabric achieves ideal physical and chemical properties, laying the foundation for subsequent down-forming. Specifically, the drying temperature can be set at 130°C, and the fabric can travel at a speed of 25 m / min in the drying equipment. When using additives to shape the fabric, the setting temperature can be set at 130°C, as this temperature allows the additives to function optimally. The fabric can travel at a speed of 25 m / min in the additive-setting equipment. This appropriate speed ensures sufficient contact and reaction time between the fabric and the additives, ensuring uniform application of the additives.

[0081] S102: performing a feathering treatment on the pretreated fabric to obtain a feathered fabric; wherein, the front side of the pretreated fabric is subjected to a sanding treatment, and the back side of the pretreated fabric is subjected to a treatment using a plurality of napping machines connected in series, each napping machine being equipped with a preset number of barbed needles.

[0082] The hairing treatment is a key initial step in achieving the down-like effect in this disclosure. Its core is to create a hair structure with a specific orientation and distribution by treating the front and back surfaces differently. This treatment combines front-side sanding with back-side napping, achieving precise modification of the fabric's surface structure through two distinct mechanical actions.

[0083] As an embodiment, the process of performing the feathering treatment may include: firstly performing a sanding treatment on the front side of the pretreated fabric by controlling the sanding speed to obtain the fabric after the front side treatment.

[0084] During the front-side sanding process, the fabric is treated using a sanding machine operating at 1000 rpm. The sanding machine is equipped with a specially designed abrasive cloth with an optimized roughness and distribution to effectively separate fiber ends from the yarn structure without damaging the base fabric. By controlling the sanding speed, the mechanical force can be adjusted, thereby controlling the amount and length of hairiness generated. During the sanding process, the fabric is kept at a speed of 15 m / min, ensuring sufficient processing time while avoiding strength loss due to overtreatment.

[0085] Then, the back side of the fabric after the front side treatment is subjected to napping treatment by using a plurality of napping machines connected in series with barbed needles to obtain the feathered fabric.

[0086] The reverse-side napping treatment utilizes four serially connected napping machines, allowing the fabric to pass through the machines at a speed of 15 m / min. Each napping machine is equipped with 11 million barbed needles. These needles feature a special design: the angle and size of the barbs at the needle tips are optimized to precisely control the force with which the fibers are extracted. This serial arrangement allows for progressive treatment of the fabric. The first napping machine primarily performs initial fiber separation, while subsequent napping machines gradually refine the hairiness. This progressive treatment significantly reduces damage to the base fabric while improving the uniformity of hairiness distribution.

[0087] The arrangement of the hairpin needles is also a crucial technical consideration. The barbed needles are arranged in a unique staggered pattern on the card clothing, ensuring full coverage of the fabric and avoiding untreated corners. Furthermore, the arrangement of the card clothing on the hairpin machines at different stations varies slightly, and this differentiated design helps create a multi-layered hairiness structure.

[0088] Throughout the hairiness treatment process, controlling fabric tension is crucial. Excessive tension will result in insufficient hairiness, while insufficient tension can cause wrinkling or deformation. Therefore, a sophisticated tension control system is employed throughout the front and back treatment processes to monitor and adjust fabric tension in real time, ensuring it remains within the optimal range.

[0089] This coordinated treatment of both the front and back surfaces creates a three-dimensional down structure on the fabric surface. The front sanding treatment primarily creates a short, uniform down layer, providing a foundation for subsequent finishing. The back brushing treatment focuses on forming longer, directional hairs, which, in subsequent processing steps, become the primary carrier for achieving the down effect. The combination of these two treatments creates an ideal three-dimensional down structure, laying a solid foundation for subsequent bulking and down-finishing processes.

[0090] S103: combing the surface of the feathered fabric with a carding machine to obtain a fluffy fabric.

[0091] Surface combing here includes at least back-side combing, which involves combing the messy hairs on the back surface after napping through a carding machine to make the hairs on the fabric surface fluffy. Surface combing here can also refer to double-sided combing, which involves combing both the front and back surfaces. In a specific implementation, the fabric can be run on the carding machine at a speed of 15 m / min, meaning the fabric can pass through the carding machine at a speed of 15 m / min.

[0092] In one embodiment, a multi-stage combing system can be used. This system is the core equipment for achieving the fabric's fluffiness. Its design concept is to achieve precise combing and orientation of the hairiness through a three-stage progressive treatment process: coarse carding, medium carding, and fine carding. This multi-stage combing method can maximize the fiber's fluffiness while maintaining fiber integrity.

[0093] like Figure 3 As shown, an implementation of S103 includes:

[0094] S3.1: A carding unit with a first density carding card clothing is configured, and an ultrasonic vibration device is used to assist in performing a first carding treatment on the hairy fabric to obtain a first carded fabric.

[0095] In the carding stage, the carding wire with the first density is used for preliminary carding. The needle density of the card wire is 80 needles / cm 2The metal needles on the surface of the card clothing are arranged at a specific angle. This stage is equipped with an ultrasonic vibration device, whose vibration frequency is controlled within the range of 20-40kHz. The introduction of ultrasonic vibration has important significance: first, ultrasonic energy reduces friction between fibers, making them easier to separate; second, the vibration prevents fiber entanglement and ensures uniform carding; finally, ultrasound activates fibers at a microscopic scale, improving their plasticity. The main goal of the carding stage is to achieve initial fiber separation, creating conditions for subsequent more refined processing.

[0096] S3.2: configuring a middle combing unit with a second density carding clothing, and controlling the combing direction and force at a preset temperature to perform a second combing treatment on the fabric after the first combing to obtain a second combed fabric.

[0097] The second density card clothing is used in the middle carding stage, and the needle density is increased to 120 needles / cm 2 This stage is characterized by precise control of the combing direction and force at a preset temperature. The temperature control system maintains the processing environment temperature within the range of 45-55°C. This temperature range can improve the flexibility of the fiber while avoiding thermal damage to the fiber. The card clothing of the combing unit adopts a bidirectional reciprocating motion with an adjustable reciprocating frequency. This motion mode helps to evenly disperse the fibers. At the same time, by adjusting the working angle of the card clothing, the combing force on the fibers can be controlled to achieve an ideal dispersion effect on the fibers.

[0098] S3.3: configuring a combing unit with a third density carding clothing, and adjusting the combing parameters through a precision tension control system to precisely comb the fabric after the second combing to obtain the fluffy fabric.

[0099] The combing stage is the key to the entire combing process. The third density card clothing is used, and the needle density reaches 200 needles / cm 2 This stage is equipped with a precision tension control system that monitors and adjusts the fabric tension in real time. This tension control system utilizes a closed-loop feedback mechanism, collecting fabric tension data in real time through multiple sensors and dynamically adjusting combing parameters based on the feedback. During the combing process, the motion trajectory of the card clothing is specially designed to precisely orient the fibers. By adjusting the card clothing's feed speed and working angle, the degree of fiber combing can be controlled, resulting in a uniform, fluffy fiber structure.

[0100] Throughout the multi-stage combing process, the fabric conveying speed needs to be adjusted according to the processing requirements of each stage. Generally speaking, the fabric conveying speed is gradually reduced from the roughing to the combing stage to ensure sufficient processing time. At the same time, tension compensation devices are installed between each combing unit to eliminate tension fluctuations during the fabric conveying process.

[0101] This three-stage combing system achieves comprehensive combing of the hairiness. The carding stage focuses on fiber separation, the medium carding stage improves fiber distribution, and the fine carding stage provides final fiber orientation. The synergistic effect of these three stages ensures the fabric achieves the desired fluffiness. This progressive approach not only improves processing efficiency but also maximizes fiber integrity, laying a solid foundation for subsequent velveting.

[0102] In another embodiment, a composite airflow treatment system is another innovative solution for achieving fabric bulking. This system uses the synergistic effects of hot, cold, and pulsed airflow to achieve a fluffy effect on fibers without causing mechanical damage. This treatment method fully utilizes the characteristics of different airflow types, achieving fine-tuning of fiber structure through precise control of temperature and pressure.

[0103] like Figure 4 As shown, in another embodiment, S103 may specifically include:

[0104] S3.4: The hairy fabric is subjected to hot air flow treatment by a hot air flow treatment unit to obtain a heat-treated fabric, wherein the hot air flow is ejected from an annular nozzle.

[0105] Hot air flow treatment is the first step of the entire air flow treatment system. The treatment unit adopts an annular nozzle design with a nozzle diameter of 0.8-1.2mm, which is evenly distributed along the circumference. The temperature of the hot air flow is controlled in the range of 120-150℃. This temperature range can soften the fibers without causing damage. The special design of the annular nozzle ensures the uniformity of the air flow and avoids local overheating. The hot air flow is sprayed in a spiral manner with an adjustable spray angle. This three-dimensional treatment method can fully penetrate or penetrate into the fabric structure. At the same time, the speed of the hot air flow is controlled in the range of 15-20m / s. This speed can ensure sufficient heat transfer without causing excessive impact on the fibers.

[0106] S3.5: The heat-treated fabric is subjected to cold airflow treatment by a cold airflow treatment unit to obtain a cooled fabric, wherein the cold airflow is sprayed at a first pressure.

[0107] Cold air flow treatment is the second key step. The temperature of the cold air flow is controlled at 15-20°C and is sprayed at a first pressure (usually 0.3-0.4MPa). The cold air flow treatment unit adopts a multi-row nozzle design, and the arrangement of the nozzles is optimized to achieve the staggered effect of airflow. The purpose of this design is to quickly cool the fiber while further improving the fluffiness of the fiber through the mechanical force of the airflow. The effect of the cold air flow can not only fix the morphology of the fiber obtained during heat treatment, but also promote the micro-curling of the fiber through the temperature gradient effect. This sudden temperature change is of great significance for improving the thermal insulation performance of the fabric.

[0108] S3.6: Applying a pulsed airflow to the cooled fabric through a pulsed airflow generator to obtain a fluffed fabric, wherein the peak pressure of the pulsed airflow is the second pressure.

[0109] Pulsed airflow is the most distinctive part of the entire airflow processing system. The pulsed airflow generator can generate intermittent airflow with a peak pressure of the second pressure (usually 0.5-0.6MPa). The pulse frequency can be adjusted within the range of 5-10Hz. This frequency range has been optimized to produce a resonance effect with the natural vibration frequency of the fiber. The mechanism of action of the pulsed airflow is to change the spatial arrangement of the fibers at the microscopic level through periodic impact force, so that the fibers obtain a larger specific surface area. At the same time, the intermittent nature of the pulsed airflow can avoid the fiber orientation problems that may be caused by continuous airflow, helping to form a more fluffy three-dimensional structure.

[0110] Throughout the entire airflow process, the fabric conveying system is also specially designed. A multi-point suspension conveyor ensures that the fabric maintains appropriate tension under the airflow while also providing ample exposure to the airflow. The conveying speed is adjustable based on the fabric's characteristics, typically within a range of 8-12 m / min. Furthermore, the entire processing system is equipped with an intelligent control unit that automatically adjusts various process parameters based on the fabric's real-time status.

[0111] The advantages of this three-stage airflow treatment are: first, it avoids the fiber damage that can occur with traditional mechanical combing; second, through precise control of temperature and pressure, the fiber structure can be regulated at the microscopic level; and finally, the process is more continuous and controllable than traditional methods. Through the sequential treatment of hot, cold, and pulsed airflow, the fabric can obtain a fluffy, uniform, and stable pile structure, which is an important foundation for achieving excellent thermal insulation.

[0112] S104: using a shearing machine to process the reverse side of the fluffed fabric to obtain an ordered fabric.

[0113] Shearing is a critical step in the down-forming process. Its goal is to achieve a uniform height and orderly arrangement of the hairs on the surface of the fluffed fabric through precise mechanical cutting. This process requires not only cutting accuracy but also careful consideration of the fabric's underlying structure, ensuring the ideal shape and distribution of the hairs after shearing. In practice, the fabric can be run through the shearing machine at a speed of 15 m / min.

[0114] In a specific implementation, the fluffed fabric can be trimmed by a shearing machine with a specific blade spacing and cutting angle set, and the shearing height can be controlled to obtain the ordered fabric.

[0115] The core component of the shearing machine is a specially designed spiral cutting tool assembly. Made from high-speed steel, the blades feature a special surface treatment for exceptional wear resistance and sharpness. The tools are arranged in a staggered double-helix design with a helix angle of 28-32 degrees, ensuring a continuous and uniform cutting process. The spacing between adjacent tools is precisely controlled within a range of 0.8-1.2 mm, optimized to ensure uniform cutting without causing over-cutting.

[0116] The cutting angle setting is a key factor influencing shearing results. The primary cutting tool is positioned at an angle of 35-40 degrees to the horizontal plane for optimal cutting results. Simultaneously, the secondary cutting tool intersects the primary cutting tool at a 60-65 degree angle. This cross-cutting pattern prevents hairiness from becoming tangled or falling during the cutting process. Precisely controlling the relative position and motion of the two sets of cutting tools ensures stable and controllable cutting.

[0117] The shearing height is controlled using a precision motor drive system, enabling precise adjustment to the 0.1mm level. Depending on the characteristics of the fabric, the shearing height is typically controlled within a range of 2-4mm. The height control system is equipped with a real-time monitoring device that continuously monitors hairiness height using a photoelectric sensor and automatically adjusts cutting parameters based on this feedback. This closed-loop control ensures consistent shearing height across the entire fabric.

[0118] During the shearing process, fabric conveying speed and tension control are also important factors. Conveyor speed is typically controlled within the range of 10-15 m / min to ensure sufficient cutting time. The tension control system utilizes multi-point detection to adjust the position of the compensating roller to maintain appropriate fabric tension throughout the shearing process. Excessive tension will result in uneven cutting, while too little tension may cause wrinkling in the fabric, affecting the cutting effect.

[0119] To improve the uniformity of shearing, the entire shearing system is equipped with auxiliary devices, including a pre-finishing unit for pre-orienting the hair before cutting; a suction device for promptly removing fiber debris generated during cutting to prevent it from affecting cutting quality; and a post-finishing unit for combing the cut hair to achieve better directionality.

[0120] This precise shearing process not only achieves a uniform height of hair on the fabric surface, but also forms an orderly arrangement. This structural characteristic lays the foundation for the subsequent velveting process and is a key step in ensuring the final product has a good appearance and feel. The sheared hair exhibits a regular distribution at the microscopic level, and this regularity helps improve the fabric's warmth retention and wearing comfort.

[0121] S105: using a Venturi effect air beater to treat the ordered fabric to obtain a velvet fabric; the velvet fabric undergoes a fiber microstructure change.

[0122] Research has shown that the fabric's speed in the Venturi-effect air beater can be controlled to approximately 10 m / min and the temperature to approximately 130°C. The 130°C high-temperature air can, on the one hand, make the fibers in the fabric more plastic, especially thermoplastic fibers, which are more easily deformed and adjusted. On the other hand, the high temperature can accelerate processes such as water evaporation, helping to remove moisture from the fabric. The 10 m / min speed determines the duration and frequency of the fabric's air beating within the Venturi tube. A suitable speed ensures that the fabric is adequately beaten and treated by the hot air and the air pressure differential. If the speed is too fast, the fabric may not have enough time to absorb the heat and receive sufficient air beating. If the speed is too slow, the treatment efficiency may be low and the fabric may even be damaged by excessive heating or beating.

[0123] In one embodiment, S105 may be implemented by the following steps:

[0124] The ordered fabric is passed through a Venturi tube, and the pressure in the tube is reduced under the action of high-speed airflow to cause expansion; the fabric is controlled to collide with the grid multiple times, so that the fabric yarn and feathers are bent multiple times; the fabric is stretched and squeezed, so that the fibers, yarns and fabric structure are deformed to obtain the velveted fabric.

[0125] Velveting is a key step in the entire manufacturing process. In this step, the fabric is treated with a Venturi-effect air beating machine, which achieves deep modification of the fabric fibers through the synergistic effect of high-speed airflow and mechanical impact.

[0126] In practice, the fabric first enters a Venturi tube. High-speed airflow at 80-120 m / s reduces the pressure inside the tube to 0.6-0.8 standard atmospheres. This pressure change causes the yarn structure to expand. As the fabric emerges from the Venturi tube, it collides with a specially designed grid at a controlled frequency of 200-300 times per minute. This high-frequency impact causes the yarn and hairiness of the fabric to bend multiple times, significantly increasing the free space within the yarn and enhancing its ability to store air, thereby improving the fabric's thermal insulation.

[0127] Throughout the entire processing process, fibers are subjected to repeated stretching and compression. This mechanical action causes irreversible "tensile fatigue" deformation in the fibers, yarns, and fabric structure, disrupting their original plastic bond. This profound structural change is key to the fabric's soft feel. It also imparts a lasting, fluffier effect, making it difficult to return to its original, compact state.

[0128] In summary, after the fabric has undergone the preceding steps of S105, it develops hairiness, but this hairiness is somewhat straight and stiff. The fabric is then passed through an air beater. Within the beater's Venturi tube, high-speed airflow reduces pressure, causing puffing. Upon exiting the Venturi tube, the fabric collides with the grid multiple times. The yarn itself, as well as the hairiness generated by the preceding steps, undergoes multiple bends, increasing the free space within the yarn, allowing for more air to accumulate and enhancing warmth. This also reduces the yarn's structural tension. The bending process, in turn, creates a stretching-compression effect on the fibers, resulting in irreversible "tensile fatigue" deformation within the fibers, yarn, and fabric structure, eliminating plastic compaction and creating a soft hand.

[0129] As another embodiment, the ordered fabric may be treated using a Venturi effect air beater by the following treatment process:

[0130] The ordered fabric is conveyed at a first speed at the inlet end of the venturi tube; the fabric is conveyed at a second speed at the throat of the venturi tube, wherein the second speed is greater than the first speed; the fabric is conveyed at a third speed at the outlet end of the venturi tube and collides with the grid, wherein the third speed is less than the second speed and greater than the first speed; wherein the first speed is 5-8 m / min, the second speed is 15-20 m / min, and the third speed is 10-12 m / min.

[0131] Specifically, controlling the fabric's conveying speed is a key factor in the Venturi-effect air flapping process. At the inlet of the Venturi tube, the fabric is conveyed at a relatively low speed of 5-8 m / min. This speed helps the fabric enter the treatment area evenly. As the fabric enters the throat of the Venturi tube, the airflow speed increases significantly due to the contraction of the tube diameter, increasing the fabric's conveying speed to 15-20 m / min. This sudden change in speed causes instantaneous stretching in the fabric structure, which helps relax the yarn structure.

[0132] As the fabric exits the Venturi throat and enters the outlet section, the expanded tube diameter slows the fabric speed to 10-12 m / min. This change in speed, combined with changes in airflow pressure, produces more significant structural changes at the yarn and fiber level. Simultaneously, the fabric impacts the grid at the outlet, a collision that, at specific speeds, is more conducive to achieving the desired fiber bending effect.

[0133] This three-stage speed control, combined with the pressure changes generated by the Venturi effect, effectively achieves a velveting effect on the fabric. The treated fabric not only has excellent loft, but also feels soft and has significantly improved thermal insulation. The advantage of this treatment method is that it maximizes the Venturi effect while protecting the basic structure of the fabric.

[0134] S106: performing shaping treatment on the velveted fabric to obtain a finished fabric.

[0135] Finishing the finished product is the final step of the entire processing process. Its purpose is to stabilize the size and performance of the fabric and ensure the consistency of product quality. When finalizing the fabric, a temperature of 130°C and a running speed of 25m / min can be used.

[0136] In one embodiment, the shaping process is performed using an intelligent shaping machine, and the entire process is divided into three stages: preheating, shaping, and cooling. The preheating stage is controlled at a temperature of 100-110°C for 20-30 seconds to evenly heat the fabric. The shaping stage is controlled at a temperature of 130-160°C for 60-90 seconds, a temperature and time combination that maximizes the shaping effect. The cooling stage uses cold air circulation, gradually lowering the temperature to room temperature for 30-40 seconds. Throughout the shaping process, the fabric tension needs to be precisely controlled within the range of 200-220N / m to ensure that the fabric remains flat and does not deform.

[0137] Through the combined action of the above-mentioned processes, the fabric has a structure similar to down, and to a considerable extent has the characteristics of warmth retention and softness similar to down, that is, it has achieved comprehensive "downization".

[0138] In addition, during implementation, after obtaining the finished fabric, the following processing can be further performed:

[0139] A1: Collecting test data of the finished fabric, including data on bulk, warmth retention, hand feel, and appearance uniformity;

[0140] Quality testing of finished fabrics is crucial for ensuring product performance. Utilizing standardized methods and advanced equipment, this testing primarily assesses four key aspects: bulk, warmth retention, hand feel, and uniform appearance. Random samples are taken from each batch, representing no less than 5% of the total batch, to ensure representative results.

[0141] The fill power test utilizes the compression-rebound method, using a professional fill power tester. During the test, a pressure of 500 Pa is applied to the sample, maintained for 30 seconds, and then released. The initial thickness, compressed thickness, and rebound thickness of the sample are recorded. The fill power specification requires an initial thickness of at least 8 mm and a rebound rate of at least 85%. The ambient temperature during testing is maintained at 20 ± 2°C, and the relative humidity is controlled at 65 ± 5%.

[0142] The thermal insulation test uses the thermal resistance method and a thermal resistance tester. The test conditions are: hot plate temperature 35°C, cold plate temperature 20°C, and pressure 100Pa. The heat flux density and temperature difference when reaching steady state are recorded, and the thermal resistance value is calculated. The standard requires that the thermal resistance value should not be less than 0.15m 2 K / W. At the same time, dynamic warmth retention tests are also conducted to simulate the warmth retention effect under actual wearing conditions.

[0143] The hand feel test consists of both subjective evaluation and objective measurement. The subjective evaluation is scored by experienced evaluators using a standard scale, assessing softness, bulk, and surface smoothness. Objective measurements are performed using a fabric feel meter, measuring parameters such as compression work and surface friction coefficient. The hand feel index requires a compression work of less than 50 gf·cm and a friction coefficient within the range of 0.2-0.3.

[0144] Appearance uniformity inspection uses image analysis method, using a high-resolution digital camera system to shoot, and professional software to analyze the distribution of the hair. The inspection area is not less than 100cm 2 , with no fewer than 10 sampling points. Uniformity is assessed by calculating the coefficient of variation, which is required to be no more than 8%. Visual inspection is also required to ensure there are no obvious color differences, streaks, or other cosmetic defects.

[0145] A2: Compare and analyze the test data with the preset quality standards to generate quality inspection results.

[0146] After the test data is collected, it is analyzed through a dedicated quality management system. The system compares the test results with the preset quality standards and generates a detailed quality inspection report. The quality standards include: the bulkiness index must reach Class A (rebound rate ≥ 85%); the warmth index must reach Class B or above (thermal resistance value ≥ 0.15m 2 ·K / W); the hand feel index is required to reach the excellent level (comprehensive score ≥90 points); the appearance uniformity is required to reach the first-class standard (coefficient of variation ≤8%).

[0147] If test results fail to meet quality standards, the system automatically generates an abnormality alert and provides a detailed analysis report, identifying the specific problem points and possible causes. This information helps production departments adjust process parameters in a timely manner to ensure continuous improvement in product quality. Furthermore, all test data is archived for product quality traceability and process optimization.

[0148] like Figure 5 As shown, the embodiment of the present disclosure also provides a device for down-feathering fabrics, comprising:

[0149] The hairiness treatment module 51 is used to obtain a pre-treated fabric; perform a hairiness treatment on the pre-treated fabric to obtain a hairiness-treated fabric; wherein the front side of the pre-treated fabric is subjected to a sanding treatment, and the back side of the pre-treated fabric is subjected to a plurality of series-connected hair-pulling machines, each hair-pulling machine being equipped with a preset number of barbed needles;

[0150] A fluffing processing module 52 is used to perform double-sided combing on the feathered fabric using a carding machine to obtain a fluffed fabric;

[0151] An ordering processing module 53 is used to process the reverse side of the fluffed fabric using a shearing machine to obtain an ordered fabric;

[0152] Velveting treatment module 54 is used to treat the ordered fabric with a Venturi effect air beater to obtain a velveted fabric; the velveted fabric undergoes a change in fiber microstructure;

[0153] The post-finishing module 55 is used to perform shaping treatment on the velvet-treated fabric to obtain a finished fabric.

[0154] In one embodiment, the hairiness processing module 51 can be used to:

[0155] Performing a mixing tank treatment on the fabric to be processed to obtain a uniform fabric;

[0156] performing heat treatment on the homogenized fabric to obtain heat-treated fabric;

[0157] Performing a pre-forming treatment on the fabric after the heat treatment to obtain a pre-formed fabric;

[0158] Dyeing the pre-shaped fabric to obtain a dyed fabric;

[0159] After the dyed fabric is dehydrated and dried, an auxiliary agent is added to fix the fabric to obtain the pretreated fabric.

[0160] In one embodiment, the fluffing module 52 can be used to:

[0161] A carding unit with a first density carding card clothing is configured, and an ultrasonic vibration device is used to assist in performing a first carding treatment on the feathered fabric to obtain a first carded fabric;

[0162] A middle combing unit is provided with a second density carding clothing, and a combing direction and force are controlled at a preset temperature to perform a second combing treatment on the fabric after the first combing to obtain a second combed fabric;

[0163] A combing unit with a third density carding clothing is configured, and combing parameters are adjusted through a precision tension control system to perform precision combing on the fabric after the second combing to obtain the fluffy fabric.

[0164] In one embodiment, the fluffing module 52 can be used to:

[0165] The feathered fabric is subjected to hot air flow treatment by a hot air flow treatment unit to obtain a heat-treated fabric, wherein the hot air flow is ejected from an annular nozzle;

[0166] The heat-treated fabric is subjected to cold air flow treatment by a cold air flow treatment unit to obtain cooled fabric, wherein the cold air flow is sprayed at a first pressure;

[0167] A pulse airflow is applied to the cooled fabric through a pulse airflow generator to obtain the fluffed fabric, wherein the peak pressure of the pulse airflow is the second pressure.

[0168] In one embodiment, the texturing module 54 can be used to:

[0169] Passing the ordered fabric through a venturi tube, whereby the pressure inside the tube is reduced and puffed under the action of high-speed airflow;

[0170] Controlling the fabric to collide with the grid multiple times, so that the fabric yarn and hairiness are bent multiple times;

[0171] Stretching and squeezing are applied to the fabric to deform the fibers, yarns and fabric structure, thereby obtaining the velveted fabric.

[0172] In one embodiment, the texturing module 54 can be used to:

[0173] conveying the ordered fabric at a first speed at an inlet end of the venturi tube;

[0174] conveying the web at a second velocity through the venturi throat, wherein the second velocity is greater than the first velocity;

[0175] The fabric is conveyed at a third speed at the outlet of the venturi tube and collides with the grid, wherein the third speed is less than the second speed and greater than the first speed;

[0176] The first speed is 5-8 m / min, the second speed is 15-20 m / min, and the third speed is 10-12 m / min.

[0177] In one embodiment, the hairiness processing module 51 can be used to:

[0178] The front side of the pretreated fabric is subjected to sanding treatment by controlling the sanding speed to obtain a front-treated fabric;

[0179] The back side of the fabric after the front side treatment is subjected to napping treatment by using a plurality of napping machines connected in series with barbed needles to obtain the feathered fabric.

[0180] In one embodiment, the ordering processing module 53 may be used to:

[0181] The fluffed fabric is sheared by a shearing machine with a specific blade spacing and cutting angle set, and the shearing height is controlled to obtain the ordered fabric.

[0182] In one embodiment, the device may further include:

[0183] The quality inspection module 56 is used to collect the inspection data of the finished fabric, including the bulkiness, warmth retention, hand feel and appearance uniformity data; compare and analyze the inspection data with the preset quality standards to generate quality inspection results.

[0184] The specific implementation and effects of the above-mentioned fabric down treatment device can be found in the description of the above-mentioned method, which will not be repeated here.

[0185] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described equipment and devices can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. In the several embodiments provided in the present disclosure, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0186] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0187] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0188] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0189] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than to limit them. The scope of protection of the present disclosure is not limited thereto. Although the present disclosure has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-mentioned embodiments within the technical scope disclosed in the present disclosure, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for down-feathering fabrics, characterized in that: include: Get pre-treated fabrics; Performing a feathering treatment on the pretreated fabric to obtain a feathered fabric; The feathering treatment process includes applying a sanding treatment to the front side of the pre-treated fabric and applying a plurality of napping machines connected in series to the back side of the pre-treated fabric, each napping machine being equipped with a preset number of barbed needles; The feathered fabric is subjected to surface combing by a carding machine to obtain a fluffed fabric; the surface combing includes backside combing; Using a shearing machine to process the reverse side of the fluffed fabric to obtain an ordered fabric; The ordered fabric is treated with a Venturi effect air beater to obtain a velvet fabric; the velvet fabric undergoes a fiber microstructure change; Performing shaping treatment on the velveted fabric to obtain a finished fabric; Wherein, the surface combing is performed using a combing machine, comprising: A carding unit with a first density carding card clothing is configured, and an ultrasonic vibration device is used to assist in performing a first carding treatment on the feathered fabric to obtain a first carded fabric; A middle combing unit is provided with a second density carding clothing, and a combing direction and force are controlled at a preset temperature to perform a second combing treatment on the fabric after the first combing to obtain a second combed fabric; A combing unit with a third density carding clothing is configured, and combing parameters are adjusted through a precision tension control system to perform precision combing on the fabric after the second combing to obtain the fluffy fabric.

2. A method for down-feathering fabrics, characterized in that: include: Get pre-treated fabrics; Performing a feathering treatment on the pretreated fabric to obtain a feathered fabric; The feathering treatment process includes applying a sanding treatment to the front side of the pre-treated fabric and applying a plurality of napping machines connected in series to the back side of the pre-treated fabric, each napping machine being equipped with a preset number of barbed needles; The feathered fabric is subjected to surface combing by a carding machine to obtain a fluffed fabric; the surface combing includes backside combing; Using a shearing machine to process the reverse side of the fluffed fabric to obtain an ordered fabric; The ordered fabric is treated with a Venturi effect air beater to obtain a velvet fabric; the velvet fabric undergoes a fiber microstructure change; Performing shaping treatment on the velveted fabric to obtain a finished fabric; Wherein, the surface combing is performed using a combing machine, comprising: The feathered fabric is subjected to hot air flow treatment by a hot air flow treatment unit to obtain a heat-treated fabric, wherein the hot air flow is ejected from an annular nozzle; The heat-treated fabric is subjected to cold air flow treatment by a cold air flow treatment unit to obtain cooled fabric, wherein the cold air flow is sprayed at a first pressure; A pulse airflow is applied to the cooled fabric through a pulse airflow generator to obtain the fluffed fabric, wherein the peak pressure of the pulse airflow is the second pressure.

3. The method according to claim 1 or 2, characterized in that Get pre-treated fabrics, including: The fabric to be processed is processed in a mixing tank to obtain a uniform fabric; performing heat treatment on the homogenized fabric to obtain heat-treated fabric; Performing a pre-forming treatment on the fabric after the heat treatment to obtain a pre-formed fabric; Dyeing the pre-shaped fabric to obtain a dyed fabric; After the dyed fabric is dehydrated and dried, an auxiliary agent is added for shaping to obtain the pretreated fabric.

4. The method according to claim 1 or 2, characterized in that The ordered fabric is processed using a Venturi effect air beating machine, including: Passing the ordered fabric through a venturi tube, whereby the pressure inside the tube is reduced and puffed under the action of high-speed airflow; Controlling the fabric to collide with the grid multiple times, so that the fabric yarn and hairiness are bent multiple times; Stretching and squeezing are applied to the fabric to deform the fibers, yarns and fabric structure, thereby obtaining the velveted fabric.

5. The method according to claim 1 or 2, characterized in that The ordered fabric is processed using a Venturi effect air beating machine, including: conveying the ordered fabric at a first speed at an inlet end of the venturi tube; conveying the web at a second velocity through the venturi throat, wherein the second velocity is greater than the first velocity; The fabric is conveyed at a third speed at the outlet of the venturi tube and collides with the grid, wherein the third speed is less than the second speed and greater than the first speed; The first speed is 5-8 m / min, the second speed is 15-20 m / min, and the third speed is 10-12 m / min.

6. The method according to claim 1 or 2, characterized in that The pretreated fabric is subjected to a hairiness treatment, comprising: The front side of the pretreated fabric is subjected to sanding treatment by controlling the sanding speed to obtain a fabric after the front side is treated; The back side of the fabric after the front side treatment is subjected to napping treatment by using a plurality of napping machines connected in series with barbed needles to obtain the feathered fabric.

7. The method according to claim 1 or 2, characterized in that The reverse side of the fluffed fabric is processed using a shearing machine, including: The fluffed fabric is sheared by a shearing machine with a specific blade spacing and cutting angle set, and the shearing height is controlled to obtain the ordered fabric.

8. The method according to claim 1 or 2, characterized in that After obtaining the finished fabric, it also includes: Collecting test data of the finished fabric, the test data including data on bulk, warmth retention, hand feel, and appearance uniformity; The test data is compared and analyzed with the preset quality standards to generate quality inspection results.

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