Method and device for down feather treatment of fabric

Abstract

The invention provides a method and a device for down feather treatment of a fabric. The method comprises the following steps: carrying out hairiness treatment of front sanding and back napping on a pretreated fabric; performing bulking treatment of double-sided carding by adopting a carding machine; carrying out ordering treatment on the reverse side by using a shearing machine; and carrying out texturing treatment by adopting a Venturi effect air flapping machine. According to the method, through the synergistic effect of multiple procedures, deep structure transformation of fabric fibers is achieved, the fabric has the bulkiness and the heat retention property similar to those of down feather, and the problems that in the related technology, the fabric is poor in heat retention effect and low in bulkiness are solved.

Description

Technical Field

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

[0002] In the field of textile processing technology, in order to improve the thermal insulation performance of fabrics, a variety of technical means are usually used for processing. Traditional thermal insulation fabric processing methods mainly include natural down filling, chemical fiber filling, and surface raising process treatment.

[0003] Among them, although natural down filling has a good warmth-keeping effect, it has the disadvantages of high cost and possible animal protection issues. Chemical fiber filling, such as polyester fiber, although relatively low cost, is obviously not as warm as natural down.

[0004] Related technologies also include methods of treating the surface of fabrics using a raising process. This method uses mechanical action to form fluff on the surface of the fabric to improve the thermal insulation performance. However, this traditional raising process only focuses on the surface effect of the fabric, and the processing equipment is scattered and the process flow is discontinuous.

[0005] In summary, the traditional raising process can only form a simple fluff effect on the surface of the fabric, and the warmth retention is poor; 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 that the fabrics have poor warmth retention, low fluffiness and easy collapse.

[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 fluffing treatment to obtain a fluffed 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 napping machines, each napping machine being equipped with a preset number of barbed needles;

[0010] The feathered fabric is subjected to surface combing by a combing machine to obtain a fluffy fabric; the surface combing includes reverse side 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 velveted fabric; the velveted fabric undergoes a fiber microstructure change;

[0013] The fleece-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 treated to obtain a uniform fabric;

[0016] The homogenized fabric is subjected to heat treatment to obtain a 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 for shaping to obtain the pretreated fabric.

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

[0021] A carding unit for carding card clothing of a first density 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;

[0022] A middle combing unit with a second density combing card clothing is configured, and the 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 combing is performed using a combing 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 treated with a Venturi effect air beater, comprising:

[0029] Passing the ordered fabric through a venturi tube, and reducing the pressure in the tube under the action of high-speed airflow to cause expansion;

[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 fleece-textured fabric.

[0032] In one embodiment, the ordered fabric is treated with 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 fabric at a second speed at the venturi throat, wherein the second speed is greater than the first speed;

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

[0036] Among them, 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 a sanding treatment by controlling a sanding speed to obtain a front-treated fabric;

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

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

[0041] The fluffed fabric is trimmed by a shearing machine with a specific cutter 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 bulkiness, 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 embodiment of the present disclosure also provides a device for down-feathering fabric, comprising:

[0046] A feathering treatment module is used to obtain a pre-treated fabric; perform a feathering treatment on the pre-treated fabric to obtain a feathered 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 treatment using a plurality of series-connected napping machines, each napping 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 combing machine to obtain a fluffed fabric; the surface combing includes reverse combing;

[0048] An ordering processing module, used for processing 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-treated fabric to obtain a 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 specifically cited below and described in detail with reference to the attached 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 is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used together with the specification 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 ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0056] Figure 1 A schematic diagram of a process for down-feathering a fabric provided in 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 It is a schematic diagram of multi-level 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 The present invention is a block diagram of the module composition of the fabric down processing device in the embodiment of the present invention. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme 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, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings here 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 present disclosure for protection, but merely represents the 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 belong to 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, further definition and explanation thereof is not required in subsequent drawings.

[0063] The term "and / or" herein only describes an association relationship, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C may represent including 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 a fabric, comprising the following steps:

[0065] S101: Obtain pre-treated fabric.

[0066] In the disclosed embodiment, the purpose of the pretreatment stage is to provide a fabric foundation with uniform texture and stable performance for the subsequent down treatment.

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

[0068] S1.1: Perform mixing treatment on the fabric to be treated to obtain a uniform fabric.

[0069] Here, the mixing process is the basic process of fabric processing, and its purpose is to improve the uniformity of the fabric. In this step, the appropriate mixing process parameters are selected according to the specific composition and characteristics of the fabric. By adjusting the bath ratio, temperature and mechanical force, impurities and oil stains in the fabric are removed, and the fabric obtains uniform physical properties. During the mixing process, special attention should 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 treatment to obtain a heat treated fabric.

[0071] Here, hot steam treatment is a special heat and moisture treatment process, the main purpose of which is to improve the internal structure of the fabric. In this step, under the action of high-temperature steam, the fiber molecular chains of the fabric gain a certain degree of mobility, which is conducive to releasing the internal stress of the fabric. This process is of great significance for improving the effect of subsequent down treatment, because it can make the fiber more plastic.

[0072] Specifically, the heat treatment can choose a high temperature treatment environment of 80℃, which can make the fabric achieve specific effects during the treatment process. On the one hand, for some fabric treatments that require specific chemical reactions or physical changes, 80℃ can provide appropriate energy for the relevant reactions and promote the interaction between additives and fabric fibers. On the other hand, this temperature can make the moisture or other volatile substances in the fabric evaporate or volatilize at a suitable rate, while not causing damage to the fabric due to excessive temperature, such as fiber deformation, color change, etc. The treatment time can be set to 30 minutes. Maintaining the temperature of 80℃ for 30 minutes is to allow the fabric to have enough time to complete the corresponding treatment process under this temperature environment. During these 30 minutes, the additive can fully penetrate into the fabric fiber or act on the fiber surface, such as making the fabric feel softer and obtaining better anti-wrinkle performance. If the time is too short, the additive may not be able to fully play its role and fail to achieve the expected treatment effect; if the time is too long, it may cause the fabric to be over-treated, resulting in some undesirable phenomena, such as reduced fabric strength and poor hand 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. In 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 treatment effect. For example, the pre-setting can be carried out 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 chaotic 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 for thermal movement and rearrangement, thereby achieving the effect of pre-setting.

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

[0076] In practice, the dyeing process not only gives the fabric the desired color, but also further improves the internal structure of the fabric. During the dyeing process, the penetration of dye molecules will affect the microstructure of the fiber, and this influence needs to be considered in subsequent processes. At the same time, the selection of dyeing technology needs to take into account the requirements of subsequent down treatment, and avoid the use of dyes and auxiliaries that may affect the down effect.

[0077] In addition, according to research, when dyeing acrylic wool fabrics, the temperature of the dyeing environment can be controlled at 95°C. This temperature helps the dye molecules to better combine with acrylic wool fibers, because higher temperatures can intensify the movement of fiber molecular segments and increase the gaps inside the fibers, providing more channels and space for the entry of dye molecules, thereby improving the dyeing effect and dyeing fastness. The dyeing process can maintain a temperature of 95°C and last for 30 minutes. During this period of time, the dye molecules have enough time to diffuse into the fiber and undergo a series of reactions with the fiber, such as adsorption, diffusion, and fixation, so that the dye is evenly attached to the fiber to achieve a good dyeing effect. If the time is too short, the dye may not be able to fully dye the fiber, resulting in unsaturated color and uneven dyeing; if the time is too long, it may damage the fiber and affect the performance of the fabric.

[0078] In addition, for the dyeing of 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 in which dyes bind are also different. A temperature of 60°C can not only effectively combine dye molecules with cotton fibers, but also avoid damage to cotton fibers caused by excessively high temperatures, while also ensuring the economy and efficiency of the dyeing process. Specifically, dyeing can be performed at 60°C for 60 minutes. Since the dyeing process of cotton fibers is relatively complicated, a longer time is required to ensure that the dye fully penetrates into the fiber and completes the color fixation process. A dyeing time of 60 minutes allows the dye to achieve better adsorption and fixation effects on cotton fibers, thereby obtaining uniform and bright colors.

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

[0080] Here, dehydration and drying treatments are carried out, and the additives are added for shaping. The key to this step is to control the moisture content and internal stress state of the fabric. During the dehydration process, it is necessary to avoid deformation of the fabric caused by excessive extrusion. During the drying process, attention should be paid to the uniformity of temperature to prevent local overheating. When adding additives for shaping, the selected additives should be compatible with the subsequent down treatment and have good durability. Through these treatments, the fabric obtains ideal physical and chemical properties, laying the foundation for the subsequent down treatment. In specific implementation, the drying temperature can be set to 130°C, and the speed of the fabric running in the drying equipment can be 25 meters / min. When using additives for shaping, the shaping temperature can be set to 130°C, at which temperature the additives can play a better role. The running speed of the fabric in the additive shaping equipment can be set to 25m / min. The appropriate speed can ensure that the fabric and the additives have sufficient contact and reaction time, so that the additives act evenly on the fabric.

[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 series-connected napping machines, each of which is equipped with a preset number of barbed needles.

[0082] Here, the hairiness treatment is the key initial step of the present invention to achieve the down effect of the fabric, and its core lies in forming a hairiness structure with a specific orientation and distribution through different treatment methods on the front and back sides. The treatment adopts a combination of front side sanding and back side napping to achieve precise modification of the fabric surface structure through two different mechanical actions.

[0083] As an embodiment, the process of performing the hairiness 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] In the frontal sanding treatment, the fabric is treated with a sanding machine with a speed of 1000 rpm. The surface of the sanding machine is equipped with a special emery cloth. The roughness and distribution of the emery cloth are optimized to effectively separate the fiber ends from the yarn structure without damaging the fabric base fabric. By controlling the sanding speed, the size of the mechanical force can be adjusted, thereby controlling the amount and length of the hairiness generated. During the sanding process, the running speed of the fabric is maintained at 15m / min. This speed ensures sufficient processing time while avoiding strength loss caused by overtreatment.

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

[0086] In the reverse napping treatment, four series-connected napping machines are used for continuous treatment, and the fabric can pass through the napping machines at a speed of 15m / min. Each napping machine is equipped with 11 million barbed needles, which have a special design: the barb angle and size of the needle tip are optimized to accurately control the force of hooking out the fiber. Through the series configuration, the fabric can be processed in a progressive manner. The first napping machine is mainly responsible for the initial fiber separation, and the subsequent napping machines gradually refine the shape of the feathers. This progressive treatment can significantly reduce the damage to the fabric base fabric and improve the uniformity of the feather distribution.

[0087] The arrangement of the napping needles is also an important technical point. The barb needles are arranged in a special staggered manner on the card clothing, which ensures full coverage of the fabric and avoids untreated dead corners. At the same time, the arrangement of the card clothing of the napping machines at different stations is slightly different. This differentiated design helps to form a multi-layered feather structure.

[0088] During the entire hairiness treatment process, fabric tension control is critical. Too much tension will lead to insufficient hairiness, while too little tension may cause the fabric to wrinkle or deform. Therefore, a precise tension control system is equipped during the front and back treatment process to monitor and adjust the fabric tension in real time to ensure that it always remains within the optimal range.

[0089] Through this method of front and back coordinated treatment, a three-dimensional hairiness structure can be formed on the surface of the fabric. The front side sanding treatment is mainly used to form a shorter and uniform down layer, providing a basis for subsequent treatment; the back side napping treatment focuses on forming longer directional hairiness, which will become the main carrier for achieving the down effect after subsequent processing. The combination of the two treatment methods enables the fabric to obtain an ideal three-dimensional down structure, laying a good foundation for subsequent fluffing and down treatment.

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

[0091] The surface combing here at least includes back combing, that is, combing the messy hair on the back after napping through a carding machine to make the hair on the surface of the fabric fluffy. The surface combing here can also refer to double-sided combing, that is, the surface combing is performed on both the front and back sides. In a specific implementation, the running speed of the fabric on the carding machine can be 15m / min, that is, the fabric can pass through the carding machine at a speed of 15m / min.

[0092] In one embodiment, a multi-stage combing system can be used; the multi-stage combing system is the core equipment to achieve the fluffy effect of the fabric. Its design concept is to achieve precise combing and orientation of the hairiness through progressive processing in three stages: rough combing, medium combing and fine combing. This multi-stage combing method can maximize the fluffy characteristics of the fiber while ensuring the integrity of the fiber.

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

[0094] S3.1: A carding unit for carding card clothing of a first density 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 rough 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 2, the metal needles on the surface of the card clothing are arranged at a specific angle. This stage is equipped with an ultrasonic vibration device, and its vibration frequency is controlled in the range of 20-40kHz. The introduction of ultrasonic vibration is of great significance: first, ultrasonic energy can reduce the friction between fibers, making it easier to separate the fibers; second, the vibration effect can prevent the fibers from entanglement and ensure the uniformity of the combing effect; finally, ultrasound can also activate the fibers on a microscopic scale and improve the plasticity of the fibers. The main goal of the rough carding stage is to achieve the initial separation of the fibers and create conditions for subsequent more refined processing.

[0096] S3.2: configuring a middle combing unit of a second density combing card clothing, and controlling the combing direction and force at a preset temperature, performing 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 combing direction and strength at a preset temperature. The temperature control system maintains the processing environment temperature in 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 movement of the middle combing unit adopts a two-way reciprocating mode with an adjustable reciprocating frequency. This movement mode helps to evenly disperse the fibers. At the same time, by adjusting the working angle of the card clothing, the combing strength of the fiber can be controlled to achieve an ideal dispersion effect on the fiber.

[0098] S3.3: configuring a combing unit with a third density combing card clothing, and adjusting combing parameters through a precision tension control system to perform precision combing on 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 can monitor and adjust the tension state of the fabric in real time. The tension control system adopts a closed-loop feedback mechanism, collects fabric tension data in real time through multi-point sensors, and dynamically adjusts the combing parameters based on the feedback results. During the combing process, the movement trajectory of the card clothing is specially designed to achieve precise orientation of the fiber. By adjusting the feeding speed and working angle of the card clothing, the combing degree of the fiber can be controlled, thereby obtaining a uniform and fluffy fiber structure.

[0100] During the entire multi-stage combing process, the conveying speed of the fabric needs to be adjusted according to the processing requirements of different stages. Generally speaking, the conveying speed of the fabric is gradually reduced from the rough combing to the fine combing stage to ensure sufficient processing time. At the same time, a tension compensation device is set between each combing unit to eliminate the tension fluctuation of the fabric during the transmission process.

[0101] Through the cooperation of this three-stage combing system, the hairiness can be fully combed. The rough combing stage focuses on solving the fiber separation problem, the medium combing stage focuses on improving the fiber distribution, and the combing stage is responsible for the final orientation of the fibers. The synergistic effect of the three stages ensures that the fabric obtains the ideal fluffy effect. This progressive treatment method not only improves processing efficiency, but also protects the integrity of the fiber to the greatest extent, laying a good foundation for the subsequent velveting treatment.

[0102] In another embodiment, the composite airflow treatment system is another innovative solution for achieving fabric fluffing. The system achieves the fluffing effect of fibers without causing mechanical damage through the synergistic effect of hot airflow, cold airflow and pulse airflow. This treatment method makes full use of the characteristics of different types of airflows and achieves fine adjustment of the fiber structure through precise control of temperature and pressure.

[0103] like Figure 4 As shown, in another implementation manner, 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 a ring 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℃, which can soften the fiber without causing damage. The special design of the ring 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, which can ensure sufficient heat transfer without causing excessive impact on the fiber.

[0106] S3.5: performing cold air flow treatment on the heat-treated fabric through a cold air flow treatment unit to obtain a cooled fabric, wherein the cold air flow 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 warmth retention performance of the fabric.

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

[0109] Pulse airflow is the most distinctive part of the entire airflow processing system. The pulse 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 in 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 pulse airflow is to change the spatial arrangement of the fiber at the microscopic level through periodic impact force, so that the fiber obtains a larger specific surface area. At the same time, the intermittent characteristics of the pulse airflow can avoid the fiber orientation problem that may be caused by continuous airflow, and help to form a more fluffy three-dimensional structure.

[0110] During the entire airflow treatment process, the fabric conveying system is also specially designed. A multi-point suspension conveying device is used to ensure that the fabric maintains moderate tension under the action of the airflow while being fully exposed to the airflow. The conveying speed can be adjusted according to the characteristics of the fabric, generally controlled within the range of 8-12m / min. At the same time, the entire processing system is equipped with an intelligent control unit, which can automatically adjust various process parameters according to the real-time status of the fabric.

[0111] The advantages of this three-stage airflow treatment are: first, it avoids fiber damage that may be caused by traditional mechanical combing; second, through the precise control of temperature and pressure, the fiber structure can be regulated at the micro level; finally, the continuity and controllability of the treatment process are better than traditional processes. Through the sequential treatment of hot air flow, cold air flow and pulse air flow, the fabric can obtain a fluffy, uniform and stable fluff structure, which is an important basis for achieving good warmth retention.

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

[0113] The shearing process is a key step in the process of down-feathering fabrics. Its purpose is to achieve uniform height and orderly arrangement of the hair on the surface of the fluffed fabric through precise mechanical cutting. This process not only needs to consider the cutting accuracy, but also pay attention to protecting the basic structure of the fabric to ensure that the hair after cutting has an ideal shape and distribution. In specific implementation, the running speed of the fabric on the shearing machine can be 15m / min, that is, the fabric can pass through the shearing machine at a speed of 15m / min.

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

[0115] The core component of the shearing machine is a special spiral cutting tool set. The tool is made of high-speed steel, and the blade has undergone special surface treatment, which has excellent wear resistance and sharpness. The arrangement of the tools adopts a double-helix staggered design with a spiral angle of 28-32 degrees. This design can ensure the continuity and uniformity of the cutting process. The spacing between adjacent tools is precisely controlled within the range of 0.8-1.2mm. This spacing has been optimized to ensure uniform cutting without causing local over-cutting.

[0116] The setting of cutting angle is a key factor affecting the shearing effect. The angle between the main cutting tool and the horizontal plane is set between 35-40 degrees, which can achieve the best cutting effect. At the same time, the auxiliary cutting tool forms a 60-65 degree cross angle with the main cutting tool. This cross cutting method can prevent the hair from getting tangled or falling during the cutting process. By accurately controlling the relative position and movement trajectory of the two sets of tools, the stability and controllability of the cutting process can be ensured.

[0117] The shearing height is controlled by a precision motor drive system, which can achieve precise adjustment at the level of 0.1mm. According to the characteristics of different fabrics, the shearing height is generally controlled within the range of 2-4mm. The height control system is equipped with a real-time monitoring device, which continuously monitors the hairiness height through a photoelectric sensor and automatically adjusts the cutting parameters based on the feedback data. This closed-loop control method ensures that the shearing height of the entire fabric remains consistent.

[0118] During the shearing process, the conveying speed and tension control of the fabric are also important factors. The conveying speed is usually controlled within the range of 10-15m / min, which can ensure sufficient cutting time. The tension control system adopts a multi-point detection method to keep the fabric in a moderate tension state throughout the shearing process by adjusting the position of the compensation roller. Excessive tension will lead to uneven cutting, while too little tension may cause the fabric to wrinkle and affect the cutting effect.

[0119] In order to improve the uniformity of shearing, the entire shearing system is also equipped with auxiliary devices, including a pre-finishing unit for pre-directional treatment of hairiness before cutting; a suction device for timely removal of fiber scraps generated by cutting to prevent it from affecting the cutting quality; and a post-finishing unit for combing the hairiness after cutting to obtain better directionality.

[0120] Through this precise shearing process, the hairiness on the surface of the fabric not only obtains a uniform height, but also forms an orderly arrangement structure. This structural characteristic lays the foundation for the subsequent velveting treatment, and is also a key step to ensure that the final product has a good appearance and feel. The hairiness after cutting presents a regular distribution at the microscopic level, and this regularity helps to improve the warmth retention effect and wearing comfort of the fabric.

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

[0122] Here, after research, it is found that the fabric can be controlled to run at a speed of about 10m / min and a temperature of about 130℃ in the Venturi effect air beating machine. On the one hand, the high temperature air of 130℃ can make the fibers in the fabric more plastic, especially for thermoplastic fibers, which can be better deformed and adjusted; on the other hand, high temperature can accelerate processes such as water evaporation, which helps to remove moisture from the fabric. The running speed of 10m / min determines the time and frequency of the fabric being beaten by air in the Venturi tube. The appropriate running speed can ensure that the fabric is fully beaten and processed under the action of hot air and air pressure difference. If the running speed is too fast, the fabric may not have enough time to fully absorb heat and receive enough air beating; if the running speed is too slow, it may lead to low processing efficiency, and may even cause the fabric to be damaged by excessive heating or beating.

[0123] In one implementation, 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 to produce expansion under the action of high-speed airflow; the fabric is controlled to collide with the grid multiple times, so that the fabric yarn and hairiness are bent multiple times; the fabric is stretched and squeezed to deform the fibers, yarns and fabric tissues to obtain the velveted fabric.

[0125] Velveting is a key step in the entire processing technology. In this step, the fabric is treated with a Venturi effect air beater, and the deep modification of the fabric fiber is achieved through the synergistic effect of high-speed airflow and mechanical impact.

[0126] In practice, the fabric first enters the Venturi tube. Under the action of high-speed airflow of 80-120m / s, the pressure inside the tube can be reduced to 0.6-0.8 standard atmospheric pressure. This pressure change will cause the yarn structure to expand. When the fabric comes out of the Venturi tube, it will collide with a special grid, and the impact frequency can be controlled at 200-300 times / minute. This high-frequency impact causes the yarn and feather of the fabric to bend multiple times, significantly increasing the free space inside the yarn and improving the ability to store air, thereby improving the warmth retention performance of the fabric.

[0127] During the whole processing, the fiber will be subjected to repeated stretching and squeezing. This mechanical action will cause the fiber, yarn and fabric structure to produce "stretching fatigue" deformation that cannot be self-recovered, breaking the original plastic compaction state. This deep structural change is the key to the fabric's soft feel. At the same time, this change also makes the fabric have a lasting fluffy effect and is not easy to restore to the original tight state.

[0128] In summary, after the fabric has gone through the previous process of S105, the fabric surface has hairiness, but the hairiness at this time is somewhat straight and hard. At this time, the fabric is processed by an air beater. In the Venturi tube of the beater, under the action of high-speed airflow, the pressure inside the tube is reduced, resulting in puffing. When coming out of the Venturi tube, the fabric collides with the grid many times. The yarn itself and the hairiness generated by the previous process are bent many times, and the free space inside the yarn is increased, which can store more air and increase warmth retention. At the same time, the structural tightness of the yarn itself is reduced, and the fiber will be stretched and squeezed during the bending process, and the "stretching fatigue" deformation that cannot be self-recovered in the fiber, yarn, and fabric structure is eliminated. Its plastic compaction forms a soft feel.

[0129] As another embodiment, the ordered fabric is treated by a Venturi effect air beater and the following treatment process can be adopted:

[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 grille, 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, in the process of Venturi effect air flapping treatment, the control of fabric conveying speed is one of the key factors. At the inlet end of the Venturi tube, the fabric is conveyed at a speed of 5-8m / min. This relatively low speed helps the fabric to enter the treatment area evenly. When the fabric enters the throat of the Venturi tube, the air flow speed increases significantly due to the contraction of the tube diameter, and the fabric conveying speed increases accordingly to 15-20m / min. This sudden change in speed will cause instantaneous stretching of the fabric structure, which helps to relax the yarn structure.

[0132] When the fabric leaves the throat of the venturi tube and enters the outlet section, the fabric speed is reduced to 10-12m / min due to the expansion of the tube diameter. This change in speed, combined with the change in air flow pressure, can produce more significant structural changes at the yarn and fiber level. At the same time, the fabric collides with the grid at the outlet end, and this collision is more conducive to the formation of an ideal fiber bending effect at a specific speed.

[0133] Through this three-stage speed control, combined with the pressure change caused by the Venturi effect, the fabric can be more effectively velveted. The treated fabric not only has good fluffiness, but also feels soft and has significantly improved warmth retention. The advantage of this treatment method is that it can maximize the Venturi effect while protecting the basic structure of the fabric.

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

[0135] Finished product shaping is the final step of the entire processing technology, and 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 carried out by an intelligent shaping machine, and the whole process is divided into three stages: preheating, shaping and cooling. The temperature in the preheating stage is controlled at 100-110°C for 20-30 seconds, in order to evenly heat up the fabric; the temperature in the shaping stage is controlled at 130-160°C for 60-90 seconds, and this temperature and time combination can give full play to the shaping effect; the cooling stage adopts cold air circulation, and the temperature gradually drops to room temperature for 30-40 seconds. During the entire shaping process, the tension of the fabric needs to be precisely controlled within the range of 200-220N / m, and this tension can ensure that the fabric is flat and not deformed.

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

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

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

[0140] The quality inspection of finished fabrics is an important part of ensuring product performance. The inspection adopts standardized inspection methods and advanced inspection equipment, mainly including four aspects of index evaluation: bulkiness, warmth retention, feel and appearance uniformity. Samples are randomly selected from each batch for inspection, and the number of samples is not less than 5% of the total to ensure the representativeness of the test results.

[0141] The bulkiness test adopts the compression-rebound method and uses a professional bulkiness tester for measurement. During the test, a pressure of 500Pa is applied to the sample, maintained for 30 seconds and then released, and the initial thickness, compression thickness and rebound thickness of the sample are recorded. The bulkiness index requires that the initial thickness is not less than 8mm and the rebound rate is more than 85%. During the test, the ambient temperature is maintained at 20±2℃ and the relative humidity is controlled at 65±5%.

[0142] The thermal resistance test is conducted using 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 steady state is reached 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 includes two parts: subjective evaluation and objective measurement. The subjective evaluation is scored by experienced evaluators according to a standard scale, and the evaluation items include softness, fluffiness and surface smoothness. The objective measurement uses a fabric feel meter to measure parameters such as compression work and surface friction coefficient. The hand feel index requires that the compression work is less than 50gf·cm and the friction coefficient is in the range of 0.2-0.3.

[0144] The appearance uniformity test adopts image analysis method, uses high-resolution digital camera system to shoot, and uses professional software to analyze the distribution of villi. The detection area is not less than 100cm 2 , with no less than 10 sampling points. The uniformity is evaluated by calculating the coefficient of variation, which is required to be no more than 8%. At the same time, a visual inspection is also required to ensure that there are no obvious appearance defects such as color difference and streaks.

[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 special 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 fluffiness index must reach Class A (rebound rate ≥ 85%); the warmth retention 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 the test results do not meet the quality standards, the system will automatically generate an abnormal alarm and provide a detailed analysis report, pointing out the specific problem points and possible causes. This information can help the production department adjust the process parameters in a timely manner to ensure continuous improvement of product quality. At the same time, all test data will be archived for product quality traceability and process optimization reference.

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

[0149] The hairiness treatment module 51 is used to obtain a pre-treated fabric; perform 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 treatment using a plurality of series-connected hair-pulling machines, each of which is 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 combing 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] The 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 fiber microstructure change;

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

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

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

[0156] The homogenized fabric is subjected to heat treatment to obtain a 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 for shaping to obtain the pretreated fabric.

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

[0161] A carding unit for carding card clothing of a first density 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;

[0162] A middle combing unit with a second density combing card clothing is configured, and the 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, and reducing the pressure in the tube under the action of high-speed airflow to cause expansion;

[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 structures, thereby obtaining the fleece-treated 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 fabric at a second speed at the venturi throat, wherein the second speed is greater than the first speed;

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

[0176] Among them, 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 treatment module 51 can be used to:

[0178] The front side of the pretreated fabric is subjected to a 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 a napping treatment by using a plurality of serially connected napping machines in cooperation with barbed needles to obtain the fabric after the feathering.

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

[0181] The fluffed fabric is trimmed by a shearing machine with a specific cutter 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, the inspection data 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 effect 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 simplicity of description, the specific working process of the above-described equipment and devices can refer to the corresponding process in the aforementioned method embodiment, 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 separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[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 a computer device (which can be a personal computer, a server, or a network device, etc.) to perform 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 protection scope of the present disclosure is not limited thereto. Although the present disclosure is described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present disclosure, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A method for down-feathering fabric, characterized in that: include: Get pre-treated fabrics; 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; The feathered fabric is subjected to surface combing by a combing machine to obtain a fluffed fabric; the surface combing includes reverse side 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 velveted fabric; the velveted fabric undergoes a fiber microstructure change; The fleece-treated fabric is subjected to shaping treatment to obtain a finished fabric.

2. The method according to claim 1, characterized in that Get pre-treated fabrics, including: Performing a mixing tank treatment on the fabric to be processed to obtain a uniform fabric; The homogenized fabric is subjected to heat treatment to obtain a heat treated fabric; Performing a pre-setting treatment on the fabric after the heat treatment to obtain a pre-set 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.

3. The method according to claim 1, characterized in that Surface combing is performed using a combing machine, including: A carding unit with a first density carding 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 with a second density combing card clothing is configured, and the 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.

4. The method according to claim 1, characterized in that: Surface combing is performed using a combing machine, including: 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.

5. The method according to claim 1, characterized in that The ordered fabric is processed by using a Venturi effect air beating machine, including: Passing the ordered fabric through a venturi tube, and reducing the pressure in the tube under the action of high-speed airflow to cause expansion; 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 fleece-textured fabric.

6. The method according to claim 1, characterized in that The ordered fabric is processed by 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 fabric at a second speed at the venturi throat, wherein the second speed is greater than the first speed; The fabric is conveyed at a third speed at the outlet of the venturi tube and collides with the grille, wherein the third speed is less than the second speed and greater than the first speed; Among them, 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.

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

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

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

10. A device for down-feathering fabrics, characterized in that: include: A feathering treatment module for obtaining pre-treated fabrics; 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: A fluffing treatment module is used to comb the surface of the feathered fabric using a combing machine to obtain a fluffed fabric; the surface combing includes reverse combing; An ordering processing module, used for processing the reverse side of the fluffed fabric using a shearing machine to obtain an ordered fabric; 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; The post-finishing module is used to perform shaping treatment on the fleece-treated fabric to obtain a finished fabric.

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