A fabric for military boots and a method for manufacturing the same

Abstract

The application relates to a fabric for military boots and a preparation method thereof, and relates to the technical field of functional fabrics for military boots. The fabric is interwoven by warp and weft yarns into a double-layer three-dimensional woven structure, contains a first layer of skin-side tissue, a second layer of outer-side tissue and a connecting tissue connecting the two, and the double-layer structure forms periodically arranged rhombic functional units containing a rhombic recessed area, a raised area and a transition connecting area, and a gas storage space is formed between the layers. Yarns are cross hollow warm keeping hetero-yarns and micro-sawtooth flat wet discharge hetero-yarns, the former is arranged in the gas storage space area, and the latter is arranged on the skin side, and the grooves extend along the transition connecting area to form a continuous wet guide path; the heat insulation area and the wet guide path are at least partially dislocated in the thickness direction. The preparation method comprises material selection, tissue design, double-layer weaving, pretreatment, shaping, dyeing and fixing and post-finishing. The fabric simultaneously realizes static warm keeping and dynamic moisture discharge through physical structure partitioning, the function is washable, and the fabric is suitable for long-term wearing of military boots.

Description

Technical Field

[0001] This application relates to the field of functional fabrics for military boots, and in particular to a military boot fabric and its preparation method. Background Technology

[0002] Military boots are used in various scenarios such as long marches, low-temperature garrisons, and wet and muddy conditions, which places much higher demands on the materials than ordinary shoe materials. In addition to basic abrasion resistance and tear resistance, the materials also need to reduce heat loss from the feet when at rest and quickly remove sweat from the skin surface when exercising.

[0003] Currently, Chinese patent application CN113186632A discloses a woven fabric that combines cooling and breathability. This fabric features a textured appearance created by alternating rectangular pore areas and dense areas. The coarser weft yarn is a composite yarn made of fine denier profiled cross-section polyester staple fiber yarn and fine denier profiled cross-section nylon filament, twisted together. The finer warp yarn is a blend of fine denier polyester fiber and bamboo fiber. The rectangular pore areas consist of recessed rectangular grooves formed by weft and warp pore areas, while the dense areas are formed by alternating weft and warp floats arranged laterally and protruding from the fabric surface. This fabric utilizes the bundled and interlocking warp and weft floats to form pores, achieving a cooling sensation and moisture-wicking effect through the thermal conductivity of nylon and the capillary effect of the profiled cross-section fibers.

[0004] However, most existing fabrics employ a single-layer textured structure or porous design, focusing on breathability and heat dissipation, making it difficult to form an effective insulation layer when the fabric is stationary at low temperatures. Furthermore, the use of coatings, composites, and high-density weaving methods sacrifices breathability or comfort while improving a certain performance. Warmth retention relies on a closed, stationary air layer, while moisture removal relies on open capillary channels; it is difficult to simultaneously achieve both functions within the same planar structure. Summary of the Invention

[0005] Therefore, it is necessary to provide a military boot fabric and its preparation method to address the aforementioned technical problems.

[0006] This application provides a military boot fabric, which adopts the following technical solution: it includes warp yarns and weft yarns, which are interwoven by a woven structure to form a double-layer three-dimensional woven structure with a skin-contact side and an outer side. The double-layer three-dimensional woven structure includes a first layer forming the skin-contact side, a second layer forming the outer side, and a connecting structure connecting the first layer and the second layer. The double-layer three-dimensional woven structure forms periodically arranged rhomboid functional units along the warp and weft directions. Each rhomboid functional unit includes a rhomboid recessed area, a rhomboid protruding area surrounding the rhomboid recessed area, and a transition connection area connecting adjacent rhomboid functional units. The first layer and the second layer maintain a predetermined interlayer distance through the bonding structure, and an air storage space with spatial height along the fabric thickness direction is formed between adjacent bonding structures. The warp and weft yarns include at least a cross-shaped hollow thermal insulation yarn and a micro-serrated flat moisture-wicking yarn. The cross-shaped hollow thermal insulation yarn is disposed in the fabric area corresponding to the air storage space, and the micro-serrated flat moisture-wicking yarn is disposed at least in the skin-contact side area of ​​the first layer of the fabric. The micro-serrated flat moisture-wicking yarn has a groove structure extending along the yarn length direction. The groove structure is correspondingly provided with the transition connection area between adjacent diamond-shaped functional units to form a continuous moisture-wicking path located on the skin-contact side. The heat insulation area formed by the cross-shaped hollow thermal insulation yarn and the air storage space is at least partially misaligned with the continuous moisture-wicking path formed by the micro-serrated flat wet-draining yarn in the fabric thickness direction.

[0007] Furthermore, at least a portion of the warp and weft yarns of the first layer are made of the micro-serrated flat wet-discharge yarn, and at least a portion of the warp and weft yarns of the second layer are made of the cross-shaped hollow heat-insulating yarn, so that the micro-serrated flat wet-discharge yarn is mainly located on the skin-contact side, and the cross-shaped hollow heat-insulating yarn is mainly located on the outer side and the fabric area corresponding to the air storage space.

[0008] Furthermore, the cross-section of the cross-shaped hollow thermal insulation yarn has multiple outwardly protruding portions spaced apart circumferentially and inwardly concave portions located between adjacent outwardly protruding portions. The outwardly protruding portions enclose and form a hollow cavity that extends continuously along the fiber length direction. The hollow cavity of the cross-shaped hollow thermal insulation yarn cooperates with the air storage space formed by the double-layer three-dimensional woven structure to form a multi-level air-containing thermal insulation structure distributed along the fiber cross-section direction and the fabric thickness direction.

[0009] Furthermore, the cross-section of the micro-serrated flat wet-discharge yarn is flat, and at least one long side is provided with a plurality of serrated protrusions arranged continuously along the fiber length direction. The groove structure is formed between adjacent serrated protrusions. The groove structure extends continuously along the length direction of the micro-serrated flat wet-discharge yarn, so that liquid water entering the groove structure migrates along the yarn length direction under capillary action.

[0010] Furthermore, the connecting structures are spaced apart along the edges of the rhomboid functional units to maintain the interlayer distance between the first layer and the second layer and to limit the relative displacement between them; the connecting structures, together with the first and second layers, define the spatial boundary of the gas storage space, so that the gas storage spaces corresponding to adjacent rhomboid functional units are independent or partially connected to each other.

[0011] Furthermore, the rhomboid raised area is formed using a floating elongated structure, and the rhomboid recessed area is formed using an interwoven structure with a higher density than the rhomboid raised area, so as to create a height difference between the rhomboid raised area and the rhomboid recessed area; the rhomboid raised area is provided with a breathable gap communicating with the outside air, and the rhomboid recessed area corresponds to the surface area of ​​the gas storage space.

[0012] Furthermore, the micro-serrated flat wet-discharge yarn extends along the transition connection area between adjacent rhomboid functional units to form a first moisture-guiding belt extending in the warp direction and a second moisture-guiding belt extending in the weft direction. The first moisture-guiding belt and the second moisture-guiding belt intersect at the transition connection area to form multiple intersection nodes, thereby constituting a mesh-like moisture-guiding path. The mesh-like moisture-guiding path is connected to the groove structure of the micro-serrated flat wet-discharge yarn.

[0013] In addition, this application also provides a method for preparing military boot fabric, which includes the following steps: S1. Material selection: Select cross-shaped hollow heat-insulating special-shaped yarn and micro-sawtooth flat wet-discharge special-shaped yarn as functional yarns, and adjust the tension of the two functional yarns on the machine respectively. S2. Organizational Design: A double-layer woven structure cycle is established based on the cross-shaped hollow thermal insulation yarn and the micro-serrated flat wet-discharge yarn, forming periodically arranged diamond-shaped functional units in the warp and weft directions, and a connecting structure is set between adjacent diamond-shaped functional units to form an air storage space between the first layer and the second layer. S3, Double-layer three-dimensional weaving: The micro-sawtooth flat wet-discharge anisotropic yarn is arranged in the skin-contact area corresponding to the first layer of the fabric, and the cross-shaped hollow heat-insulating anisotropic yarn is arranged in the fabric area of ​​the second layer of the fabric and the corresponding air-storage space. The double-layer three-dimensional woven fabric with diamond-shaped functional units is formed by the interlacing of warp and weft yarns. S4. Fabric pretreatment: The double-layer three-dimensional woven fabric is refined, degreased and washed to remove oil and weaving auxiliaries from the yarn surface. S5, Pre-shaped: The pre-treated fabric is pre-shaped to maintain the predetermined three-dimensional shape of the rhomboid concave area and rhomboid convex area of ​​the rhomboid functional unit. S6. Dyeing and color fixing: Dye the pre-shaped fabric and then wash, soap, and fix it in sequence. S7. Functional finishing: Perform functional finishing on the dyed and fixed fabric to give the fabric moisture-absorbing, soft and / or stain-resistant properties, and control the adhesion of the finishing agent so that the groove structure on the surface of the micro-serrated flat wet-discharge yarn remains at least partially open. S8. Re-setting and pre-shrinking: The fabric after functional finishing is re-set and pre-shrinked to maintain the three-dimensional shape of the diamond-shaped functional unit and reduce the dimensional changes of the fabric after washing.

[0014] Furthermore, in step S2, the warp density, weft density, float length weave cycle, and distribution position of the splicing weave are adjusted according to the size of the rhomboid functional unit and the predetermined interlayer distance. The interlayer distance between the first layer and the second layer is controlled by the interval arrangement of the splicing weave, so that the gas storage space is continuously or intermittently distributed between adjacent splicing weaves.

[0015] Furthermore, in step S7, the functional finishing process adopts a low-coverage finishing method and controls the degree of adhesion of the finishing agent on the fabric surface, so that the groove structure of the micro-serrated flat wet-discharge anisotropic yarn remains at least partially open, while preventing the finishing agent from entering and filling the air storage space between the first layer and the second layer.

[0016] In summary, this application includes the following beneficial technical effects: 1. This application divides the fabric thickness into sections by configuring cross-shaped hollow thermal insulation yarn and micro-serrated flat moisture-wicking yarn, so that the heat insulation area and the moisture-wicking path do not overlap. When worn statically, the air-storing space formed by the hollow fiber cavity and the double-layer structure locks in still air and reduces heat loss. When sweating during exercise, the serrated grooves on the skin-contact side quickly guide liquid water along the yarn direction and diffuse and evaporate. The two functions perform their respective duties and are independent of each other, solving the problem of mutual restraint between the heat preservation and moisture permeability of traditional fabrics, allowing the same piece of fabric to both statically store heat and dynamically wick away sweat.

[0017] 2. The three-dimensional structure of the diamond-shaped embossed pattern in this application has a raised area composed of a floating elongated structure and a recessed area composed of a tightly interwoven structure. There is a natural height difference between the two, and the upper and lower layers are stably connected at the edges by a bonding structure. This allows the internal air-retaining space of the fabric to maintain its original shape after being squeezed, bent, or repeatedly washed, and it is not easy to collapse or stick together. At the same time, the three-dimensional texture gives the fabric a crisp shape and good resilience, keeping it flat and not loose during long-term wear, thus taking into account both functional stability and appearance.

[0018] 3. The warmth and moisture-wicking properties of the fabric in this application are derived from the physical structure of the fiber cross-section and the weaving structure itself, and are formed in one go during the weaving stage; the micro-serrated grooves and hollow cavities will not be blocked or disappear due to washing, and the finishing is only used to improve the hand feel and assist in stain resistance, and the amount of adhesion is intentionally controlled to retain the functional channels; therefore, the fabric's moisture absorption, perspiration wicking and heat insulation properties have natural washability and remain stable after long-term use, making it more suitable for the continuous wearing needs of military boots in harsh environments such as wet, muddy, and large temperature differences. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the fabric used in this application; Figure 2 This is a schematic diagram of the structure of the first layer of the organization in this application; Figure 3 This is a schematic diagram of the structure of the second-layer organization in this application; Figure 4 This is a schematic diagram of the structure of the rhomboid functional unit in this application; Figure 5 This is a schematic diagram of the cross-shaped hollow thermal insulation yarn of this application; Figure 6 This is a schematic diagram of the structure of the micro-serrated flat wet-discharge anisotropic yarn of this application; Figure 7 This is a flowchart of the fabric preparation method for this application.

[0020] Explanation of reference numerals in the attached drawings: 1. First layer of fabric; 2. Second layer of fabric; 3. Jointing fabric; 4. Rhomboid functional unit; 41. Rhomboid recessed area; 42. Rhomboid raised area; 43. Transition connection area; 5. Air storage space; 6. Cross-shaped hollow thermal insulation yarn; 61. Outer convex part; 62. Inner concave part; 63. Hollow cavity; 7. Micro-serrated flat wet-dissipating yarn; 71. Serrated protrusion; 72. Groove structure. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] This application provides a military boot fabric and its preparation method, see reference. Figures 1 to 6The fabric consists of warp and weft yarns, which are interwoven through a woven structure to form a double-layered three-dimensional woven structure with a skin-contact side and an outer side. The skin-contact side refers to the side of the fabric that is close to the wearer's skin when in use, while the outer side refers to the side of the fabric that is away from the skin and faces the external environment. The double-layered three-dimensional woven structure includes a first layer 1 forming the skin-contact side, a second layer 2 forming the outer side, and a connecting structure 3 connecting the first layer 1 and the second layer 2. The first layer 1 and the second layer 2 maintain a predetermined interlayer distance through the connecting structure 3, thereby forming an air-storing space 5 with a spatial height along the fabric thickness direction between adjacent connecting structures 3. The air-storing space 5 is filled with still air, and the thermal conductivity of still air is much lower than that of the fiber material, which can significantly reduce the heat conduction of the fabric and improve its thermal insulation performance.

[0023] The double-layer three-dimensional woven structure forms periodically arranged diamond-shaped functional units 4 along the warp and weft directions. The overall fabric surface presents a regular three-dimensional texture of concave and convex diamond patterns, with the raised and recessed areas of the diamond pattern alternating. Each diamond-shaped functional unit 4 includes a diamond-shaped recessed area 41, a diamond-shaped raised area 42 surrounding the diamond-shaped recessed area 41, and a transitional connecting area 43 connecting adjacent diamond-shaped functional units 4. The diamond-shaped raised area 42 is located on the periphery of the diamond-shaped functional unit 4, while the diamond-shaped recessed area 41 is located in the central area of ​​the diamond-shaped functional unit 4. There is a height difference between the diamond-shaped raised area 42 and the diamond-shaped recessed area 41 in the fabric thickness direction, thus forming a three-dimensional concave and convex structure. This not only increases the specific surface area of ​​the fabric, which is conducive to heat and moisture exchange with the outside air, but also provides a certain buffer space, improves the fabric's compression resistance and resilience, and makes the fabric crisp and less prone to flattening and deformation.

[0024] The warp and weft yarns include at least cross-shaped hollow insulating yarn 6 and micro-serrated flat moisture-wicking yarn 7. The cross-shaped hollow insulating yarn 6 is disposed in the fabric area corresponding to the air storage space 5, mainly located in the second layer of fabric 2 and the area forming the outer base surface of the second layer of fabric 2, that is, the area corresponding to the rhomboid recessed area 41 and defining the outer boundary of the air storage space 5. The static air inside the hollow fiber and the air storage space 5 formed by the double-layer structure work together to achieve the effect of static air storage and heat retention. The micro-serrated flat moisture-wicking yarn 7 is disposed at least in the skin-contact area of ​​the first layer of fabric 1 and extends along the area corresponding to the transition connection area 43 between the adjacent rhomboid functional units 4 in the first layer of fabric 1. It can also be disposed in the skin-contact surface area corresponding to the rhomboid protrusion area 42, so that the skin-contact area presents a rhomboid grid area on the fabric surface. The micro-serrated flat moisture-wicking yarn 7 uses the groove structure 72 naturally formed on the fiber surface to construct a dynamic channel for moisture wicking. By regularly distributing and rationally configuring two types of differentiated functional yarns in space, the thermal insulation function and the moisture-wicking function are structurally partitioned and functionally layered in the fabric thickness direction.

[0025] Specifically, at least a portion of the warp and weft yarns of the first layer 1 utilize micro-serrated flat wet-wicking yarn 7, while at least a portion of the warp and weft yarns of the second layer 2 utilize cross-cut hollow insulating yarn 6. This results in the micro-serrated flat wet-wicking yarn 7 primarily located on the skin-contact side and in the diamond-patterned raised area, while the cross-cut hollow insulating yarn 6 primarily located on the outer base surface and in the corresponding air-retaining space 5 fabric area. In this way, the micro-serrated flat wet-wicking yarn 7 on the skin-contact side can quickly absorb and conduct sweat, while the cross-cut hollow insulating yarn 6 on the outer side and in the air-retaining space 5 area primarily functions as a heat-insulating agent. The two functional yarns are staggered in the fabric thickness direction to avoid functional interference.

[0026] The micro-serrated flat moisture-wicking yarn 7 has a groove structure 72 extending along the yarn length. The micro-serrated flat moisture-wicking yarn 7 is positioned in the first layer of fabric 1 at the warp and weft yarn positions corresponding to the transition connection area 43 between adjacent rhomboid functional units 4, so that the extension direction of the groove structure 72 is consistent with the extension direction of the transition connection area 43. Since the groove structure 72 extends continuously along the yarn length, a continuous moisture-wicking path is formed along the transition connection area 43 on the skin-contact side. Specifically, the micro-serrated flat moisture-wicking yarn 7 extends along the transition connection area 43 between adjacent rhomboid functional units 4, forming a first moisture-wicking band extending in the warp direction and a second moisture-wicking band extending in the weft direction. The first and second moisture-wicking bands intersect at the transition connection area 43, forming multiple intersection nodes, thus constituting a mesh-like moisture-wicking path. This mesh-like moisture-wicking path communicates with the groove structure 72 of the micro-serrated flat moisture-wicking yarn 7, allowing liquid water to migrate rapidly along the groove structure 72 under capillary action, achieving efficient moisture absorption and wicking function.

[0027] The heat insulation area formed by the cross-shaped hollow insulating yarn 6 and the air storage space 5, and the continuous moisture-wicking path formed by the micro-serrated flat moisture-wicking yarn 7, are at least partially offset in the fabric thickness direction. That is, the heat insulation area is mainly concentrated in the air storage space 5 and near the base surface of the second layer 2, while the moisture-wicking path is mainly concentrated on the skin-contact side of the first layer 1, the diamond-patterned area, and the transition connection area 43. The projections of the two in the thickness direction do not overlap at least partially, thereby preventing the still air in the heat insulation area from being destroyed by liquid water or water vapor in the moisture-wicking path, and also preventing the moisture-wicking path from being obstructed by the heat insulation area. This achieves a synergistic effect of heat insulation and moisture wicking, resulting in a dual-effect fabric with complementary performance.

[0028] In one embodiment of this application, the cross-section of the cross-shaped hollow thermal insulation yarn 6 has multiple outwardly protruding portions 61 spaced apart circumferentially and inwardly recessed portions 62 located between adjacent outwardly protruding portions 61. The outwardly protruding portions 61 enclose and form a hollow cavity 63 that extends continuously along the fiber length direction. The hollow cavity 63 is filled with still air, further reducing the thermal conductivity of the fiber. The hollow cavity 63 of the cross-shaped hollow thermal insulation yarn 6 cooperates with the air storage space 5 formed by the double-layer three-dimensional woven structure to form a multi-level air-containing thermal insulation structure distributed along the fiber cross-section direction and the fabric thickness direction. This multi-level air-containing thermal insulation structure can effectively block the conduction and convection of heat, significantly improving the thermal insulation performance of the fabric. At the same time, due to the presence of the hollow structure, the fiber density is reduced, which is beneficial to the lightweighting of the fabric. The skin-contacting surface utilizes hollow fibers to stably trap and seal still thermal insulation air, which can effectively block the outflow of human body heat and achieve a "still warm" lightweight and static thermal insulation effect.

[0029] In one embodiment of this application, the cross-section of the micro-serrated flat moisture-wicking yarn 7 is flat, and at least one long side is provided with a plurality of serrated protrusions 71 continuously arranged along the fiber length direction, with a groove structure 72 formed between adjacent serrated protrusions 71. The groove structure 72 extends continuously along the length direction of the micro-serrated flat moisture-wicking yarn 7, allowing liquid water entering the groove structure 72 to migrate along the yarn length direction under capillary action. The micro-serrated flat moisture-wicking yarn 7 is a core material for dynamic moisture wicking and breathability. The yarn surface has three-dimensional serrated gaps and longitudinal continuous groove structure 72, forming natural multi-dimensional capillary channels. The flat cross-section increases the surface area of ​​the fiber, which is conducive to the rapid absorption of sweat; the serrated protrusions 71 and the groove structure 72 provide continuous capillary channels, which can quickly guide sweat to the non-skin-contact area or evaporation area of ​​the fabric. When the body sweats and generates heat during exercise, the moisture-wicking channels quickly remove and diffuse the sweat from the skin, preventing heat buildup, stuffiness, and stickiness, keeping the wearer dry throughout the process.

[0030] The connecting structures 3 are spaced along the edges of the rhomboid functional units 4 to maintain the interlayer distance between the first layer 1 and the second layer 2 and to limit their relative displacement. The connecting structures 3, together with the first and second layers 1, define the spatial boundary of the air-storage spaces 5, allowing the air-storage spaces 5 corresponding to adjacent rhomboid functional units 4 to be independent or partially connected. By adjusting the distribution and spacing of the connecting structures 3, the size and connectivity of the air-storage spaces 5 can be controlled, thereby adjusting the fabric's insulation and breathability. When the air-storage spaces 5 are independent, still air is confined within their respective spaces, resulting in better insulation; when the air-storage spaces 5 are partially connected, air circulation and moisture removal are facilitated, leading to better breathability.

[0031] The rhomboid raised area 42 is formed using a floating weave, while the rhomboid recessed area 41 is formed using a weave with a higher density than the raised area 42, creating a height difference between them. A floating weave refers to a weave where yarns float continuously above several yarns without interlacing, resulting in fewer interlacing points, less yarn crimp, and a relatively fluffy, raised fabric surface. Conversely, a tightly woven weave has more interlacing points, resulting in a denser, more recessed fabric. Therefore, the combination of the floating and tightly woven weaves creates a distinct three-dimensional raised / recessed effect. The rhomboid raised area 42 has breathable gaps connecting to the outside air, while the rhomboid recessed area 41 corresponds to the surface area of ​​the air storage space 5. These breathable gaps allow outside air to enter the fabric and exchange with the still air in the air storage space 5, ensuring a certain level of warmth while preventing excessive stuffiness. The regular distribution of the rhomboid raised / recessed pattern ensures a stable overall fabric structure, a durable three-dimensional texture, and prevents flattening and deformation due to wearing and washing.

[0032] This application also provides a method for preparing the above-mentioned military boot fabric, see reference. Figures 1 to 7 This includes the following steps: S1. Material Selection: Select cross-cut hollow insulating special-shaped yarn 6 and micro-serrated flat wet-laid special-shaped yarn 7 as functional yarns, and adjust the tension of each yarn on the loom. The tension adjustment should be based on the yarn's linear density, breaking strength, and elongation to ensure uniform yarn tension during weaving and avoid yarn breakage. For example, the cross-cut hollow insulating special-shaped yarn 6 can be made of polyester-based hollow fiber yarn with a linear density of 150D-300D, and the tension on the loom should be controlled at 0.2-0.5 cN / dtex; the micro-serrated flat wet-laid special-shaped yarn 7 can be made of polyester or nylon yarn with a linear density of 100D-200D and the tension on the loom should be controlled at 0.15-0.4 cN / dtex.

[0033] S2. Weave Design: A double-layer woven weave cycle is established based on the cross-shaped hollow insulating yarn 6 and the micro-serrated flat wet-discharge yarn 7. Periodically arranged diamond-shaped functional units 4 are formed in the warp and weft directions, and connecting structures 3 are set between adjacent diamond-shaped functional units 4 to form an air-storage space 5 between the first layer weave 1 and the second layer weave 2. During weave design, the warp density, weft density, float length weave cycle, and the distribution position of the connecting structures 3 are adjusted according to the size of the diamond-shaped functional units 4 and the predetermined interlayer distance. For example, the side length of the diamond-shaped functional unit 4 can be 5-20mm, the interlayer distance can be controlled at 0.5-3mm, the warp density can be 200-400 yarns / 10cm, and the weft density can be 180-350 yarns / 10cm. The interval of the connecting structures 3 can be adjusted according to the size of the air-storage space 5; for example, a connecting point can be set every 2-8 yarns. By controlling the interlayer distance between the first layer organization 1 and the second layer organization 2 through the interval arrangement of the connecting organization 3, the gas storage space 5 can be continuously or intermittently distributed between adjacent connecting organizations 3.

[0034] S3. Double-layer three-dimensional weaving: Micro-serrated flat wet-drying yarn 7 is placed in the skin-contact area and diamond-pattern area of ​​the first layer 1, while cross-hollow insulating yarn 6 is placed on the base surface of the second layer 2 and in the corresponding air-storage space 5. The warp and weft yarns interweave to form a double-layer three-dimensional woven fabric with diamond-shaped functional units 4. During weaving, the two functional yarns are distributed according to the weave design, so that the diamond-pattern area is composed of micro-serrated flat wet-drying yarn 7, and the base surface area is composed of cross-hollow insulating yarn 6, forming a regularly distributed concave-convex diamond-pattern three-dimensional texture and stable air storage and breathable moisture-wicking channels. During weaving, double-beam weaving or single-beam weaving with different warp feed rates can be used to control the warp tension difference between the first layer 1 and the second layer 2, thereby forming a stable interlayer distance and three-dimensional structure. Rapier looms or air-jet looms can be used to adapt to the weaving requirements of different yarns.

[0035] S4. Fabric Pretreatment: The double-layer three-dimensional woven fabric undergoes scouring, degreasing, and washing to remove oils and weaving auxiliaries from the yarn surface. Scouring can be performed using alkaline solution or scouring agents at 80-95℃ for 20-40 minutes. Degreasing can be done using non-ionic degreasing agents. Washing can be done using multi-tank continuous washing to ensure the cleanliness of the fabric surface, laying the foundation for subsequent dyeing and finishing.

[0036] S5. Pre-setting: The pre-treated fabric is pre-set to maintain the predetermined three-dimensional shape of the diamond-shaped recessed areas 41 and diamond-shaped raised areas 42. The pre-setting temperature can be determined according to the fiber type. For example, for polyester-based fibers, the pre-setting temperature can be controlled at 180-200℃ for 30-60 seconds, and the width can be set according to the finished product requirements. Pre-setting not only fixes the three-dimensional shape but also improves the dimensional stability of the fabric, ensuring the diamond-patterned texture is maintained for a long time.

[0037] S6. Dyeing and Fixation: The pre-shaped greige fabric is dyed, followed by washing, soaping, and fixation treatments. Dyeing can be performed using high-temperature, high-pressure dyeing or hot-melt dyeing, selecting appropriate dyes based on the fiber type. For example, if the cross-cut hollow thermal insulation yarn 6 and the micro-serrated flat wet-laid yarn 7 are polyester-based, disperse dyes can be used at 130-135℃; if they are nylon-based, acid or neutral dyes can be used. After dyeing, the fabric is washed and soaped to remove excess dye, followed by fixation treatment to improve colorfastness.

[0038] S7. Functional Finishing: The dyed and fixed fabric undergoes functional finishing to impart moisture-wicking, softness, and / or stain-resistant properties. The adhesion of the finishing agent is controlled to ensure that the groove structure 72 on the surface of the micro-serrated flat wet-wicking yarn 7 remains at least partially open. Functional finishing can employ low-coverage finishing methods, such as foam finishing, spray finishing, or single-sided finishing, to prevent the finishing agent from excessively filling the groove structure 72 and air-retaining space 5. Finishing agents can include hydrophilic amino silicone softeners, moisture-wicking finishing agents, and stain-resistant finishing agents. The adhesion of the finishing agent to the fabric surface is controlled to ensure that the groove structure 72 of the micro-serrated flat wet-wicking yarn 7 remains at least partially open, while preventing the finishing agent from entering and filling the air-retaining space 5 between the first layer of fabric 1 and the second layer of fabric 2. For example, the liquid content in foam finishing can be controlled at 15%-30%, and spray finishing can use a low-pressure spray method to ensure that the finishing agent only adheres to the fiber surface without clogging the grooves. The moisture-guiding channel and air-storage space 5 of this application are mainly formed in one go during the weaving stage by the fiber irregular cross section and the woven structure. They are permanent physical structures, and the finishing is only used as an auxiliary function. Therefore, the fabric is washable and durable.

[0039] S8. Resetting and Pre-shrinking: The greige fabric after functional finishing undergoes resetting and pre-shrinking treatment to maintain the three-dimensional shape of the diamond-shaped functional units 4 and reduce dimensional changes after washing. The resetting temperature is slightly lower than the presetting temperature; for example, the resetting temperature for polyester-based fabrics can be controlled at 160-180℃ for 40-60 seconds. Pre-shrinking can be performed mechanically or by steam pre-shrinking to control the shrinkage rate of the fabric in the warp and weft directions to within 3%, improving the fabric's stability in use.

[0040] To further illustrate this application, specific embodiments are provided below.

[0041] Example 1 This embodiment provides a military boot fabric, in which both the warp and weft yarns comprise cross-shaped hollow insulating yarn 6 and micro-serrated flat wet-drying yarn 7. The cross-shaped hollow insulating yarn 6 is a polyester-based cross-shaped hollow fiber yarn with a linear density of 200D / 96F and a fiber hollowness of 20%. The fiber cross-section has four outward protrusions 61 and four inward concave portions 62, with continuously extending hollow cavities 63. The micro-serrated flat wet-drying yarn 7 is a polyester-based flat profile yarn with a linear density of 150D / 72F. The fiber cross-section is flat, with continuous serrated protrusions 71 along its long side, forming groove structures 72 with a depth of approximately 2-5 μm between adjacent serrated protrusions 71.

[0042] In the double-layer three-dimensional woven structure, the warp and weft yarns of the first layer 1 (skin-contact side) are all made of micro-serrated flat wet-laid special-shaped yarn 7, while the warp and weft yarns of the second layer 2 (outer base surface) are all made of cross-shaped hollow heat-insulating special-shaped yarn 6. The bonding structure 3 adopts a warp bonding method, which is set at intervals along the edge of the diamond-shaped functional unit 4, with a bonding point set every 4 yarns. The side length of the diamond-shaped functional unit 4 is 10mm. The diamond-shaped raised area 42 adopts a 5-end satin float weave, the diamond-shaped recessed area 41 adopts a plain weave, the interlayer distance is 1.5mm, and the air storage space 5 is about 1.2mm high.

[0043] The preparation method follows steps S1-S8 as described above. In S1, the cross-shaped hollow thermal insulation yarn 6 has a tension of 0.35 cN / dtex, and the micro-serrated flat wet-wicking yarn 7 has a tension of 0.25 cN / dtex. In S2, the warp density is 320 ends / 10cm, and the weft density is 280 ends / 10cm. S3 is woven using a double-beam rapier loom. S4 pretreatment: scouring at 90℃ for 30 minutes, treatment with a nonionic degreasing agent, and multiple water washing. S5 pre-setting: 190℃ for 45 seconds. S6 dyeing: dyeing with disperse dye at 130℃ for 60 minutes, followed by washing, soaping, and color fixing. S7 finishing: using a foam finishing method with a liquid retention rate of 20%, the finishing agent is a compound of hydrophilic amino silicone oil softener and moisture-wicking finishing agent. S8 re-setting: 170℃ for 50 seconds, mechanical pre-shrinking to ensure a shrinkage rate of ≤2%.

[0044] Comparative Example 1 For comparison, a fabric made of conventional polyester filaments with a high-density plain weave was treated with a polyurethane coating.

[0045] The fabrics of Example 1 and Comparative Example 1 were subjected to performance tests. Moisture absorption and quick-drying properties were tested according to GB / T 21655.1-2023, including water absorption rate, drip diffusion time, wicking height, and drying rate. Tests were conducted in both the initial and post-wash states. Thermal insulation properties were tested according to GB / T 11048-2008 Method B, including thermal insulation rate, clo value, heat transfer coefficient, and thermal resistance. The fabric's weight per unit area and tear strength were also tested. The test results are shown in Tables 1 and 2.

[0046] Table 1: Results of moisture absorption, quick-drying properties, and heat retention tests In the table, "after washing" refers to the test results after washing according to the 4N×5 hanging drying method specified in GB / T 21655.1-2023.

[0047] Table 2: Physical Performance Test Results As shown in Tables 1 and 2, the fabric of Example 1 is significantly superior to that of Comparative Example 1 in terms of moisture absorption rate, water droplet diffusion time, wicking height, and drying rate. Furthermore, these moisture absorption and drying indicators actually increase after washing, indicating that the moisture-wicking channels in this application are permanent physical structures with excellent functional durability. Regarding thermal insulation, Example 1 achieves a thermal insulation rate of 21.4% and a Clo value of 0.237, significantly better than Comparative Example 1's 14.2% and 0.105, demonstrating that this application achieves effective static thermal insulation under lightweight conditions. Simultaneously, the fabric of Example 1 has a lower unit area weight (285 g / m²). 2 For 380g / m 2 It has higher tear resistance (95N vs. 75N), achieving a synergistic effect of warmth and moisture wicking, and the fabric is lightweight, structurally stable, and has a crisp shape.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A military boot fabric, characterized in that, It includes warp and weft yarns, which are interwoven by a woven structure to form a double-layer three-dimensional woven structure with a skin-contact side and an outer side. The double-layer three-dimensional woven structure includes a first layer (1) forming the skin-contact side, a second layer (2) forming the outer side, and a connecting structure (3) connecting the first layer (1) and the second layer (2). The double-layer three-dimensional woven structure forms periodically arranged rhomboid functional units (4) along the warp and weft directions. The rhomboid functional unit (4) includes a rhomboid recessed area (41), a rhomboid protruding area (42) surrounding the rhomboid recessed area (41), and a transition connection area (43) connecting adjacent rhomboid functional units. The first layer (1) and the second layer (2) maintain a predetermined interlayer distance through the bonding structure (3), and form an air storage space (5) with spatial height along the fabric thickness direction between adjacent bonding structures (3). The warp and weft yarns include at least a cross-shaped hollow thermal insulation yarn (6) and a micro-serrated flat moisture-wicking yarn (7). The cross-shaped hollow thermal insulation yarn (6) is disposed in the fabric area corresponding to the air storage space (5), and the micro-serrated flat moisture-wicking yarn (7) is disposed at least in the skin-contact side area of ​​the first layer of fabric (1). The micro-serrated flat moisture-wicking yarn (7) has a groove structure (72) extending along the yarn length direction. The groove structure (72) is correspondingly provided with a transition connection area (43) between adjacent diamond functional units (4) to form a continuous moisture-wicking path located on the skin-contact side. Among them, the heat insulation area formed by the cross-shaped hollow heat-insulating anisotropic yarn (6) and the air storage space (5) is at least partially misaligned with the continuous moisture-guiding path formed by the micro-serrated flat wet-draining anisotropic yarn (7) in the fabric thickness direction.

2. The military boot fabric according to claim 1, characterized in that, The first layer of the fabric (1) uses at least a portion of the micro-serrated flat wet-drying yarn (7) in its warp and weft yarns, and at least a portion of the cross-shaped hollow heat-insulating yarn (6) in its warp and weft yarns, so that the micro-serrated flat wet-drying yarn (7) is mainly located on the skin-contact side, and the cross-shaped hollow heat-insulating yarn (6) is mainly located on the outer side and in the fabric area corresponding to the air storage space (5).

3. The military boot fabric according to claim 1, characterized in that, The cross-section of the hollow thermal insulation yarn (6) has multiple outward protrusions (61) spaced apart circumferentially and inward concave portions (62) located between adjacent outward protrusions (61). The outward protrusions (61) enclose and form a hollow cavity (63) that extends continuously along the fiber length direction. The hollow cavity (63) of the hollow thermal insulation yarn (6) cooperates with the air storage space (5) formed by the double-layer three-dimensional woven structure to form a multi-level air-containing thermal insulation structure distributed along the fiber cross-section direction and the fabric thickness direction.

4. The military boot fabric according to claim 1, characterized in that, The cross-section of the micro-serrated flat wet-discharge yarn (7) is flat, and at least one long side is provided with a plurality of serrated protrusions (71) arranged continuously along the fiber length direction. The groove structure (72) is formed between adjacent serrated protrusions (71). The groove structure (72) extends continuously along the length direction of the micro-serrated flat wet-discharge yarn (7) so that liquid water entering the groove structure (72) migrates along the yarn length direction under capillary action.

5. The military boot fabric according to claim 1, characterized in that, The connecting structure (3) is spaced along the edge of the rhomboid functional unit (4) to maintain the interlayer distance between the first layer structure (1) and the second layer structure (2) and to limit the relative displacement between them; the connecting structure (3), together with the first layer structure (1) and the second layer structure (2), defines the spatial boundary of the gas storage space (5), so that the gas storage spaces (5) corresponding to adjacent rhomboid functional units (4) are independent of each other or partially connected.

6. The military boot fabric according to claim 1, characterized in that, The rhomboid raised area (42) is formed by a floating elongated structure, and the rhomboid recessed area (41) is formed by an interwoven structure with a higher density than the rhomboid raised area (42), so that a height difference is formed between the rhomboid raised area (42) and the rhomboid recessed area (41); the rhomboid raised area (42) is provided with a breathable gap that communicates with the outside air, and the rhomboid recessed area (41) corresponds to the surface area of ​​the gas storage space (5).

7. The military boot fabric according to claim 1, characterized in that, The micro-serrated flat wet-dissipating yarn (7) extends along the transition connection area (43) between adjacent rhomboid functional units (4) to form a first moisture-guiding belt extending in the warp direction and a second moisture-guiding belt extending in the weft direction. The first moisture-guiding belt and the second moisture-guiding belt intersect at the transition connection area (43) to form multiple intersection nodes to constitute a mesh moisture-guiding path. The mesh moisture-guiding path is connected to the groove structure (72) of the micro-serrated flat wet-dissipating yarn (7).

8. A method for preparing military boot fabric, used to prepare the military boot fabric as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Material selection: Select cross-shaped hollow heat-insulating special yarn (6) and micro-sawtooth flat wet-discharge special yarn (7) as functional yarns, and adjust the tension of the two functional yarns on the machine respectively; S2, Organization Design: Based on the cross-shaped hollow heat-insulating yarn (6) and the micro-serrated flat wet-discharge yarn (7), a double-layer woven organization cycle is established, forming periodically arranged rhomboid functional units (4) in the warp and weft directions, and a connecting organization (3) is set between adjacent rhomboid functional units (4) to form an air storage space (5) between the first layer organization (1) and the second layer organization (2); S3, Double-layer three-dimensional weaving: The micro-sawtooth flat wet-discharge heterogeneous yarn (7) is placed in the skin-contact area of ​​the first layer of the fabric (1), and the cross-shaped hollow heat-insulating heterogeneous yarn (6) is placed in the fabric area of ​​the second layer of the fabric (2) and the corresponding air storage space (5). The double-layer three-dimensional woven fabric with diamond-shaped functional units (4) is formed by the interlacing of warp and weft yarns. S4. Fabric pretreatment: The double-layer three-dimensional woven fabric is refined, degreased and washed to remove oil and weaving auxiliaries from the yarn surface. S5, Pre-shaped: The pre-treated fabric is pre-shaped so that the rhomboid recessed area (41) and rhomboid protruding area (42) of the rhomboid functional unit (4) maintain the predetermined three-dimensional shape; S6. Dyeing and color fixing: Dye the pre-shaped fabric and then wash, soap, and fix it in sequence. S7. Functional finishing: Perform functional finishing on the dyed and fixed fabric to give the fabric moisture-absorbing, soft and / or stain-resistant properties, and control the degree of adhesion of the finishing agent so that the groove structure (72) on the surface of the micro-serrated flat wet-dissipating yarn (7) remains at least partially open. S8. Re-shaping and pre-shrinking: The fabric after functional finishing is re-shaped and pre-shrinked to maintain the three-dimensional shape of the rhomboid functional unit (4) and reduce the dimensional changes of the fabric after washing.

9. The method for preparing a military boot fabric according to claim 8, characterized in that, In step S2, the warp density, weft density, floating length structure cycle and the distribution position of the splicing structure (3) are adjusted according to the size of the rhomboid functional unit (4) and the predetermined interlayer distance. The interlayer distance between the first layer structure (1) and the second layer structure (2) is controlled by the interval arrangement of the splicing structure, so that the gas storage space (5) is continuously or intermittently distributed between adjacent splicing structures (3).

10. The method for preparing a military boot fabric according to claim 8, characterized in that, In step S7, the functional finishing process adopts a low coverage finishing method and controls the degree of adhesion of the finishing agent on the fabric surface, so that the groove structure (72) of the micro-serrated flat wet-discharge anisotropic yarn (7) remains at least partially open, while preventing the finishing agent from entering and filling the air storage space (5) between the first layer of the fabric (1) and the second layer of the fabric (2).

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