A heat-accumulating, warm-keeping, moisture-absorbing and sweat-releasing plush fabric and a preparation method thereof

By using a three-layer integrated weave structure and napping process, the problem of reduced warmth retention and poor moisture absorption and wicking capacity caused by the wear and tear of fleece fabric during wearing and washing is solved. This achieves lightweight heat retention and moisture absorption and wicking performance, improving the durability and comfort of the fabric.

CN122428443APending Publication Date: 2026-07-21MODERN TEXTILE TECH INNOVATION CENT (JIANHU LAB)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MODERN TEXTILE TECH INNOVATION CENT (JIANHU LAB)
Filing Date
2026-06-02
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing fleece fabrics suffer from reduced warmth due to wear and tear of the fleece during wearing and washing. They are also heavy, have poor moisture absorption and wicking capabilities, and current improvement methods lack functional durability.

Method used

It adopts a three-layer integrated weave structure, including an outer layer, an inner layer and a middle layer. The outer layer is a hydrophilic polyester openwork weave, the inner layer is a heat-retaining, warm, moisture-wicking and quick-drying yarn plain knit or textured weave, and the middle layer is a polyester high-elastic yarn loop or tufted structure. Through loop or tufted knitting, air bridges and napping processes are formed to create high-speed transmission channels and microporous structures. Combined with a high-roll napping machine, a uniform napping layer is formed.

Benefits of technology

It achieves lightweight heat retention and moisture wicking properties, improving the fabric's durability and comfort, making it suitable for close-fitting wear in autumn and winter and as an inner layer for outdoor sportswear.

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Abstract

The application provides a heat-storing, warm-keeping, moisture-absorbing and sweat-releasing plush fabric and a preparation method, and belongs to the technical field of functional textiles. The fabric comprises a surface layer, a middle layer and a back layer which are integrally woven in three layers. The surface layer is composed of a hollow structure of hydrophilic polyester. The back layer is composed of a plain stitch or a texture stitch of heat-storing, warm-keeping, moisture-absorbing and quick-drying yarn. A pile layer is arranged on the side of the back layer away from the middle layer. The middle layer is formed by forming loops or tuck stitches of polyester high-elasticity filaments connected between the back layer and the middle layer. The fabric has the functions of heat storage, warm keeping, moisture absorption and sweat release, and can be used as close-fitting wear in autumn and winter, and can also be used as the inner plush fabric of outdoor sports, hiking and skiing clothes.
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Description

Technical Field

[0001] This application relates to a heat-retaining, warmth-insulating, moisture-wicking fleece fabric and its preparation method, belonging to the field of functional textile technology. Background Technology

[0002] The warmth of fleece fabric is achieved by trapping a layer of stagnant air within the fluffy pile on the fabric surface, forming an insulating / warming layer. With increasing wear and washing, continuous friction and detergent washing cause the pile to wear down, break, pill, and gradually thin. The thinner the pile layer, the less air it traps, and the more severe the decrease in warmth retention. The lightweight, warm, and breathable fabric provided by CN120818941A employs a double-sided fleece structure with interwoven pile yarns and a central mesh support layer, supplemented by a fusion bonding process with fusible yarns. This significantly improves its resistance to shedding and durability, overcoming the problems of traditional fleece fabrics such as heaviness, low warmth retention, or loose and easily damaged structure. However, the presence of fusible yarns affects the fabric's feel, and the durability of its performance after washing is uncertain.

[0003] Furthermore, fleece fabric can generally be used as a thermal layer with outer clothing, or worn independently as a close-fitting fleece garment in autumn and winter. Therefore, it has specific requirements regarding weight and moisture-wicking capacity. However, existing fleece fabrics tend to have high weight, poor moisture-wicking capacity, and a tendency to feel stuffy and damp. Therefore, the industry generally addresses the moisture-wicking performance of fleece fabrics through the following three methods: Method 1: Developing polyester and nylon with irregular cross-sections to utilize their capillary effect to improve moisture absorption; Method 2: Employing double-knitted or spaced-weave structures, combined with unidirectional moisture-wicking finishing technology, to guide sweat flow in a specific direction; Method 3: Using chemical auxiliaries in finishing processes, but this method lacks sufficient functional durability. Summary of the Invention

[0004] In view of this, this application firstly provides a heat-retaining, warmth-insulating, moisture-wicking fleece fabric that combines the properties of heat retention and warmth-insulating and moisture-wicking. It can be used as a close-fitting garment in autumn and winter, or as the inner fleece fabric for outdoor sports, hiking, and skiing clothing.

[0005] Specifically, this application is implemented through the following scheme: A heat-retaining, moisture-wicking, and perspiration-absorbing fleece fabric includes a three-layer integrated woven outer layer, a middle layer, and an inner layer. The outer layer is a hollowed-out structure made of hydrophilic polyester, and the inner layer is a plain knit or textured structure made of heat-retaining, moisture-wicking, and quick-drying yarn. A pile layer is provided on the side of the inner layer away from the middle layer. The middle layer is a looped or tucked structure formed by high-elastic polyester yarns connecting the inner layer and the middle layer.

[0006] This application presents a heat-retaining, warmth-insulating, moisture-wicking fleece fabric. Between the inner and outer layers, air bridges are formed through a looped or gathered structure, creating high-speed channels for moisture transport. The perforated structure of the outer layer imparts a microporous structure, accelerating sweat evaporation. The inner layer, composed of heat-retaining, warmth-insulating, moisture-wicking, and quick-drying yarns in a plain or textured knit, works in conjunction with the fleece layer to achieve heat retention. This combination of heat retention and moisture wicking allows the fleece fabric to have a wider range of applications and more ideal effects.

[0007] Furthermore, as a preferred option: The fineness of the heat-retaining, moisture-wicking, and quick-drying yarn is 75–120D / 36–96F, and the fineness of the hydrophilic polyester is 50–120D / 72–144F. In the yarn composition of the inner and outer layers, the F number of the outer layer yarn is controlled to be greater than that of the inner layer yarn. When the inner layer yarn comes into contact with sweat, due to the special setting of the F number, a capillary effect is formed between the outer and inner layers, and moisture or water is conducted from the inner layer with a lower F number to the outer layer with a higher F number, accelerating diffusion and allowing sweat to be quickly discharged.

[0008] In the structure of the surface layer, the openwork structure adopts a jacquard openwork structure. More preferably, the openwork structure is round holes, square holes, strip holes, etc. The openwork structure is formed by the needles of the jacquard machine through alternating structures such as looping, gathering, and floating threads, which is more conducive to heat dissipation and moisture permeability.

[0009] In the inner layer structure, the heat-retaining, moisture-absorbing, and quick-drying yarn is composed of fibers with various cross-sectional shapes, arranged in a parallel configuration. More preferably, the cross-sectional shapes include hollow and multi-leaf shapes, with multi-leaf shapes including trilobal (Y), quadrilobal (+), and hexalobal (*) cross-sections. The proportion of hollow fibers is 1 / 3-1 / 2, and the proportion of multi-leaf fibers is 1 / 2-2 / 3. More preferably, the ratio of hollow fibers to multi-leaf fibers is 1:1 or 1:2. Preferred: The hollow fiber has a hollowness of 15-30%, and the hollow shape can be C-shaped, sandwich-shaped, etc. The hollow fiber has a heat storage function. The control of shape and hollowness can achieve the best balance between static air retention and heat preservation.

[0010] The width-to-length ratio of the multi-leaf fiber is 1:3 to 6. The depth and opening angle of the multi-leaf shape are key considerations, designed to maximize the fiber's specific surface area, creating a capillary effect that facilitates rapid moisture diffusion and evaporation. To ensure the filament's cross-sectional shape, the width of the slits in the irregularly shaped holes must be as small as possible, with a width-to-length ratio of 1:3 to 6, preferably 1:4 to 6. A trilobal cross-sectional shape is preferred, achieving a good balance between moisture conductivity and spinning stability.

[0011] As a specific example, when the total number of holes in the heat-storing, heat-insulating, moisture-absorbing, and quick-drying yarn is controlled at 72 holes, hollow fibers and multi-leaf fibers are configured in a 1:1 ratio, or hollow fibers and multi-leaf fibers are configured in a 1:2 ratio. In this case, the multi-leaf fibers can be of various shapes.

[0012] The texture organization is a regular texture organization such as square, wave, and circle.

[0013] The pile height of the pile layer is 0.2 to 1.2 mm.

[0014] The napping layer has a nap coverage of 40-85% on the inner layer.

[0015] When the inner layer uses a plain knit weave, the corresponding napped layer evenly covers the inner layer; when the inner layer uses a textured weave, the corresponding napped layer covers the shape of the textured weave.

[0016] In the structure of the intermediate layer, the polyester high-elastic yarn is formed by looping or tufting to form the intermediate layer, which regularly and fixedly connects the outer layer and the inner layer, while the unconnected areas form a gap layer. The loops form the support area, and the tufts and floats form the hollow area. Together with the inner layer and the intermediate layer, they form a three-layer integrated fabric structure. 100% polyester DTY high-elastic yarn 75-100D / 36-96F.

[0017] The weight of the heat-retaining, warmth-insulating, moisture-wicking fleece fabric is 250–300 g / cm³. 2 .

[0018] The applicant's second objective was to provide the aforementioned heat-retaining, moisture-wicking fleece fabric, and the steps are as follows: Step 1: A three-layer integrated woven structure is formed by using a double-sided jacquard machine. In this structure, the cylinder needles alternately form a regular outer layer through looping, tucking, and floating yarns. The disc needles form the inner layer. The polyester high-elastic yarn is woven by looping or tucking to regularly and securely connect the outer jacquard structure with the inner layer. The unconnected areas form an intermediate gap layer. The tucking and floating yarn structures form the hollow areas, and the looping structures form the support areas, thus obtaining the three-layer integrated woven fabric. Step two: Use a high-roller napping machine, configured with a combination of straight and curved needles. The high-roller napping machine has 12 to 36 napping rollers, and the ratio of straight to curved needles is 1:2 to 2:1. Straight needles account for 30 to 60% of the total number of needles, and curved needles account for 40 to 70%. The single napping pressure is controlled at 20 to 50% of the rated pressure, and the number of napping passes is 4 to 9. The napping machine roller speed is controlled at 3 to 12 m / min. The above pressure and napping parameters, while forming a napped layer on the side of the inner layer away from the middle layer, maintain the stability of the middle layer structure, thereby completing the napping treatment of the greige fabric.

[0019] Step 3: Shaping, washing, pre-shrinking, and finishing to obtain the heat-retaining, moisture-wicking fleece fabric.

[0020] Preferably, the shaping temperature is 160-170°C, and the overfeed rate is 10-12%.

[0021] Compared with existing technologies, the fleece fabric with heat-retaining, warmth-insulating, moisture-wicking, and perspiration-wicking functions of this application adopts a three-layer integrated knitting structure, which includes an outer layer, a middle layer, and an inner layer. The inner layer is composed of heat-retaining, warmth-insulating, moisture-wicking, and quick-drying yarns, and through a napping process, the fiber ends are effectively combed and napped to form a full, uniform napped layer with good moisture-wicking properties. The middle layer is located between the outer layer and the inner layer, and is formed by loop or tuck knitting to create air bridges, serving as a high-speed transmission channel for moisture or water. The outer layer is made of hydrophilic polyester, and through jacquard openwork weave, it is given a microporous structure, which is conducive to accelerating sweat evaporation and heat dissipation. Using heat-retaining, moisture-wicking, and quick-drying yarns, the fabric's heat-retaining efficiency is improved from the raw yarn itself, and the fabric weight is effectively reduced, resulting in lightweight construction. This also solves the problem of poor moisture-wicking and quick-drying properties caused by the thickness of fleece fabrics. Compared to three-layer bonded fabrics, the one-piece weaving process and single-sided napping of the inner layer improves the resistance to shedding, enhances durability, and ensures a soft hand feel. As a result, it has the characteristics of heat retention, moisture wicking, comfort, and lightweight construction. It can be used as a close-fitting garment in autumn and winter, and can also be used as the inner fleece fabric for outdoor sports, hiking, and skiing clothing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application.

[0023] Figure 1 Here is the weaving parameter table for Example 1, where ∨ - needle plate loop formation, ∪ - needle plate gathering; ∧ - needle cylinder loop formation, — - float yarn.

[0024] Figure 2 The image shows the appearance of the fabric prepared in Example 1, where part A is the outer layer and part B is the inner layer.

[0025] Figure 3 Here is the knitting parameter table for the needle cylinder in Example 2, where ∧-needle cylinder loop, —-float yarn. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the technical solutions in the embodiments of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit the technical solutions of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0027] Example 1

[0028] This embodiment provides a heat-retaining, warmth-insulating, moisture-wicking fleece fabric, which can be simply summarized as a three-layer integrated fabric consisting of a long twill openwork outer layer and a square-patterned fleece inner layer.

[0029] Inner layer: The heat-retaining, moisture-wicking and quick-drying yarn has a specification of 100D / 72f. The yarn contains three types of cross-section fibers, namely hollow, trilobal (Y), and quadrilobal (T), in a ratio of 1:1:1.

[0030] Surface layer: The yarn is hydrophilic polyester DTY yarn with a specification of 75D / 96f.

[0031] Middle layer: Yarn is 100% polyester DTY high elastic yarn 75D / 36f.

[0032] Weaving equipment: 34-inch, 28G double-sided circular knitting machine.

[0033] The weaving parameters of the above-mentioned heat-retaining, warmth-insulating, moisture-wicking fleece fabric are shown in the table below. Figure 1 As shown: The outer layer of the cylinder fabric features a long twill jacquard openwork structure. Computer-controlled needle selection ensures that, within a complete cycle, the needles at the edge of the long twill weave form loops, supporting the perforated walls. The needles in the inner area are floated, with the cylinder floats forming a 1-point wide, 5-point long diagonal openwork from stitch 2 of track 1, stitch 3 of track 2, stitch 4 of track 3, stitch 5 of track 4, and stitch 1 of track 5. This long twill openwork design facilitates heat dissipation and moisture permeability. The remaining areas consist of a loop-knitted base fabric.

[0034] The inner layer is knitted with a needle plate to form a grid pattern, with a size of 5*5mm. The grid is surrounded by a circle to diffuse sweat and moisture. The needle plate is arranged in rows 1 / 5 on the left and right, rows 2 / 4 on the top and bottom, and row 3 at the center point to form a regular grid pattern that comes into contact with the skin to absorb moisture.

[0035] High-elastic polyester yarn is woven together in the outer and inner layers to form fixed points. A set of connection points is set for every 5 weaves to ensure that the three-layer structure fits tightly.

[0036] The woven fabric is raised using a 24-roll napping machine with a straight needle to curved needle ratio of 1:2. The single napping pressure is controlled at 35% of the rated pressure, and the napping is performed in 6 passes. The napping machine speed is controlled at 6 m / min to form a short pile layer in the inner layer, with the pile height controlled at 0.3-0.5 mm and the grid outline clear. Fine-toothed combing rollers are used at a speed of 600 r / min to shear the pile until the pile surface is uniform and the height is 0.2-0.3 mm.

[0037] The greige fabric after napping is shaped and washed. The shaped temperature is controlled at around 168℃ for 30 seconds, with an overfeed of about 12%. A neutral detergent is used, and the washing temperature is 40℃ for 15 minutes to remove residual sizing agents, oil stains and other impurities from the weaving and finishing processes, resulting in the finished heat-retaining, warm, moisture-wicking fleece fabric.

[0038] Statistical analysis of multiple batches shows that the heat-retaining, moisture-wicking fleece fabric obtained by the above method has a width of 160-165cm and a weight of 250-260g / cm². 2 Its appearance is shown in the photos. Figure 2 As shown: The surface of the heat-retaining, warmth-insulating, moisture-wicking fleece fabric has a uniform long twill openwork structure (see...). Figure 2 Part A of the text); while the inner layer has a square napped pattern on both sides, with the napped layer located at the shape of the texture (see Part A of the text). Figure 2 Part B of the document.

[0039] Example 2

[0040] This embodiment provides a heat-retaining, warmth-insulating, moisture-wicking fleece fabric, which can be simply summarized as a three-layer integrated fabric consisting of a circular hollowed-out outer layer and a plain knit fully piled inner layer.

[0041] Inner layer: The heat-retaining, moisture-wicking and quick-drying yarn has a specification of 100D / 72f. The yarn contains three types of cross-section fibers, namely hollow, trilobal (Y), and quadrilobal (T), in a ratio of 1:1:1.

[0042] Surface layer: The yarn is hydrophilic polyester DTY yarn with a specification of 75D / 96f.

[0043] Middle layer: Yarn is 100% polyester DTY high elastic yarn 75D / 36f.

[0044] Weaving equipment: 24-inch, 28G double-sided circular knitting machine.

[0045] The weaving parameters of the above-mentioned heat-retaining, warmth-insulating, moisture-wicking fleece fabric are shown in the table below. Figure 3 As shown: The surface layer uses a circular grid jacquard weave. Computer-controlled needle selection manages the knitting process, and within a complete knitting cycle, the edge areas of the circular cutouts are knitted in loops to form ring-shaped support walls, ensuring the circular cutout structure is resistant to deformation and has smooth edges. The inner areas are knitted with float yarn, forming 5mm diameter circular cutouts through a closed-loop float yarn path. The non-cutout areas use a plain weave, ensuring surface abrasion resistance and structural integrity. The needle configuration is AABCDDCBAA.

[0046] The inner layer is knitted using a full nap design. A finishing process creates a uniformly distributed short nap layer, enhancing heat retention and tactile comfort when in direct contact with the skin. Simultaneously, the capillary effect of the composite yarn quickly absorbs sweat from the skin's surface. The needle length is ∨-∨∪ for the first section and ∨∪∨ for the second section.

[0047] High-elastic polyester yarn is woven together in the outer and inner layers to form fixed points. A set of connection points is set for every 6 weaves to ensure that the three-layer structure fits tightly and avoids delamination, arching or failure of the air layer during wear.

[0048] The woven fabric is raised using a 24-roll napping machine with a straight needle to curved needle ratio of 1:2. The single napping pressure is controlled at 42% of the rated pressure, and the napping is performed in 8 passes. The napping machine speed is controlled at 6 m / min to form a short pile layer in the inner layer, with a pile height of 0.4–0.6 mm and a pile coverage of ≥99%, with no obvious exposed base material. The fabric is then combed twice using fine-tooth combing rollers at 800 r / min, and the pile is sheared until the pile is uniform and the height is 0.3–0.5 mm.

[0049] The greige fabric after napping is shaped and washed. The shaped temperature is controlled at around 168℃ for 35 seconds, with an overfeed of about 12%. A neutral detergent is used, and the washing temperature is 40℃ for 15 minutes to remove residual sizing agents, oil stains and other impurities from the weaving and finishing processes, resulting in the finished heat-retaining, moisture-wicking fleece fabric.

[0050] Statistical analysis of multiple batches shows that the heat-retaining, moisture-wicking fleece fabric obtained by the above method has a width of 160–165 cm and a weight of 270–285 g / cm². 2 The heat-retaining, warmth-insulating, moisture-wicking fleece fabric has a uniform circular perforated structure on the surface, with the nap layer evenly distributed in the inner layer.

[0051] Example 3

[0052] This embodiment has the same setup as Embodiment 1, except that: The outer layer yarn is hydrophilic polyester DTY yarn with a specification of 100D / 96f.

[0053] The outer layer uses a plain knit weave, fully knitted to create a smooth surface; the inner layer is a square pile fabric, resulting in a three-layer integrated fabric with a plain knit outer layer and a square pile inner layer. The width is 160–165cm, and the weight is 280–290g / cm². 2 .

[0054] Example 4

[0055] The setup in this embodiment is the same as in embodiment 2, except that: The outer layer yarn is hydrophilic polyester DTY yarn with a specification of 100D / 96f.

[0056] The outer layer uses a plain knit weave, fully knitted to create a smooth surface; the inner layer is a plain knit pile layer, resulting in a three-layer integrated fabric with a plain knit outer layer and a fully piled plain knit inner layer. The fabric width is 160–165cm, and the weight is 320–330g / cm². 2 .

[0057] Example 5

[0058] The setup in this embodiment is the same as in embodiment 2, except that: Inner layer: The heat-retaining, moisture-wicking, and quick-drying yarn has a specification of 75D / 72f. The yarn contains two types of cross-section fibers: hollow and four-leaf (cross-shaped) fibers in a 1:2 ratio, resulting in a three-layer integrated fabric with a circular openwork outer layer and a plain knit fully piled inner layer. The width is 160-165cm, and the weight is 275-290g / cm². 2 .

[0059] Comparative Example 1

[0060] The setup of this comparative example is the same as that of Example 2, except that: the inner layer uses polyester yarn with a cross-section of "+", and the yarn specification is 75D / 72f; the outer layer uses hydrophilic polyester DTY yarn, with a specification of 75D / 96f. The outer layer uses a plain knit weave, with the entire cylinder knitted to form a smooth surface; the inner layer is a square-patterned fleece, resulting in a common quick-drying square-patterned fleece fabric with a width of 160-165cm and a weight of 320-330g / cm². 2 .

[0061] Comparative Example 2

[0062] This comparative example has the same setup as Example 2, except that the inner layer uses polyester yarn with a cross-section of 75D / 72f and the outer layer uses hydrophilic polyester DTY yarn with a specification of 75D / 96f, resulting in a common quick-drying jacquard fleece fabric with a width of 160-165cm and a weight of 280-290g / cm². 2 .

[0063] The fabrics obtained from the above schemes were subjected to performance testing. The testing indicators and requirements are shown in Table 1, and the test results are shown in Table 2.

[0064] Table 1: Fabric Testing Indicators and Requirements .

[0065] Table 2: Comparison of fabric testing results under different methods .

[0066] The above test results confirm that, compared to three-layer laminated fabrics, the above preparation method uses an integrated weaving process and single-sided napping of the inner layer, which improves shedding resistance, increases durability, and ensures a soft hand feel, thus possessing characteristics such as heat retention, moisture wicking, and comfort. Its heat retention rate is above 54%, demonstrating excellent heat retention performance. Comparing the water absorption rate and wicking height difference before and after washing shows that, compared to ordinary moisture-wicking and quick-drying fabrics, this application has a heat-retaining and warming effect; compared to fleece fabrics, it has better moisture wicking performance. Most existing technologies achieve moisture wicking and heat retention functions through three-layer lamination with a membrane in the middle layer. Compared to these fabrics, this invention has the advantages of comfort, softness, and no impact on performance after washing. The moisture wicking and quick-drying performance of the fabric in this application is also superior to ordinary quick-drying fabrics, effectively solving the problem of poor moisture wicking and quick-drying performance caused by the thickness of fleece fabrics. It can be used as a close-fitting garment in autumn and winter, and can also be applied to the inner fleece fabric of outdoor sports, hiking, and skiing clothing.

[0067] The above-described embodiments are merely illustrative of several feasible implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present invention, nor are the embodiments intended to limit the scope of protection in the claims of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention. All equivalent implementations or changes that do not depart from the present invention should be included in the technology of the present invention.

Claims

1. A heat-retaining, warmth-insulating, moisture-wicking fleece fabric, characterized in that: It includes a three-layer integrated woven outer layer, middle layer and inner layer. The outer layer is a hollowed-out structure made of hydrophilic polyester. The inner layer is a plain knit or textured structure made of heat-retaining, warm, moisture-absorbing and quick-drying yarn. A napped layer is provided on the side of the inner layer away from the middle layer. The middle layer is a looped or tucked structure formed by high-elastic polyester yarn connecting the inner layer and the middle layer.

2. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 1, characterized in that: The F-number of the heat-retaining, moisture-absorbing, and quick-drying yarn is greater than that of the hydrophilic polyester.

3. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 1, characterized in that: The fineness of the heat-retaining, moisture-absorbing, and quick-drying yarn is 75-120D / 36-96F, and the fineness of the hydrophilic polyester is 50-120D / 72-144F.

4. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 1, characterized in that: In the structure of the surface layer, the openwork structure adopts a jacquard openwork structure.

5. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 1, characterized in that: In the inner layer structure, the heat-storing, heat-insulating, moisture-absorbing, and quick-drying yarn is composed of fibers with different cross-sectional shapes, and these fibers are arranged in a parallel manner.

6. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 5, characterized in that: The cross-sectional shape includes hollow and multi-leaf shapes. The multi-leaf shape can be any one of three-leaf, four-leaf, or six-leaf shapes. The ratio of hollow fibers to multi-leaf fibers is 1:1 to 2.

7. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 5, characterized in that: The hollowness of the hollow fiber is controlled at 15-30%, and the leaf width to leaf length ratio of the multi-leaf yarn is 1:3-6.

8. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 1, characterized in that: The pile height of the pile layer is 0.2 to 1.2 mm.

9. The heat-retaining, warmth-insulating, moisture-wicking fleece fabric according to claim 1, characterized in that: The weight of the heat-retaining, warmth-insulating, moisture-wicking fleece fabric is 250–300 g / cm³. 2 .

10. A method for preparing the heat-retaining, warmth-insulating, moisture-wicking fleece fabric as described in claim 1, characterized in that, The steps are as follows: Step 1: A three-layer integrated woven structure is formed by using a double-sided jacquard machine. In this structure, the cylinder needles alternate between at least two of the following: looping, tucking, and floats to form a regular outer layer. The disc needles knit to form the inner layer. The polyester high-elastic yarn is knitted by looping or tucking to connect the outer jacquard structure with the inner layer. The unconnected areas form an intermediate gap layer. The tucking and float structures form the hollow area, and the looping structure forms the support area, resulting in a three-layer integrated woven fabric. Step 2: Use a high-roller napping machine with a combination of straight and curved needles. The number of napping rollers on the high-roller napping machine is 12 to 36, the roller speed is 3 to 12 m / min, the ratio of straight needles to curved needles is 1:2 to 2:1, and the number of straight needles accounts for 30 to 60% of the total number of needles. The single-pass napping pressure is controlled at 20 to 50% of the rated pressure to obtain a heat-retaining, warm, moisture-wicking fleece fabric.