Thermal fabric
The staggered arrangement structure and pile fabric formed by the integrated weaving solve the problem of poor interlayer stability in non-filled fabrics, achieving a stable air layer and moisture absorption and warmth retention effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN HUAFENG NEW MATERIALS
- Filing Date
- 2025-06-13
- Publication Date
- 2026-07-14
AI Technical Summary
Existing three-layer filling fabrics that do not require down filling have limited interlayer space and poor stability, resulting in poor warmth retention.
The structure employs multiple first and second weaves formed by one-piece weaving. The first weave has a raised structure that creates an internal warming space, while the second weave has a planar structure that is staggered to enhance stability and improves moisture absorption through napping.
It achieves a stable air layer in the fabric without down filling, improving warmth retention and structural stability, while also possessing moisture-wicking properties.
Smart Images
Figure CN224494476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of woven fabric manufacturing, and in particular to a thermal insulation fabric. Background Technology
[0002] As living standards improve, the warmth of fabrics has become the primary consideration when people choose clothing. Down jackets are the preferred choice for keeping warm in autumn and winter. Their warmth is achieved by filling the space between two layers of fabric with down. However, down jackets can be very bulky when worn and are prone to leaking down.
[0003] To address the aforementioned issues, an existing three-layer filling fabric that does not require down filling incorporates a filling yarn as an interlayer. The outer weft yarns repeatedly pass through this interlayer and interweave with the inner warp yarns, while the inner weft yarns repeatedly pass through the interlayer and interweave with the outer warp yarns. This continuous interweaving process fixes the interlayer within the fabric, achieving a filling effect without down filling. However, the interlayer space in this fabric is very limited, and its thickness is primarily supported by the filling yarn, resulting in poor stability and an inability to form a stable air layer, leading to poor warmth retention. Utility Model Content
[0004] The purpose of this invention is to provide a thermal insulation fabric with excellent thermal insulation properties. The specific technical solution is as follows:
[0005] A thermal insulation fabric includes multiple first structures and multiple second structures formed by integral weaving. The first structures are raised structures with thermal insulation spaces formed inside. The second structures are planar structures used to define the edge parts of the first structures. The first structures and second structures are spaced apart. The multiple second structures are staggered in the warp and / or weft directions. The multiple first structures are also staggered in the warp and / or weft directions to make the overall structure of the fabric stable and have a three-dimensional effect.
[0006] Furthermore, the edge of a portion of the insulation space of the first organization is connected to the insulation spaces of the adjacent and staggered first organization.
[0007] Furthermore, the insulation space of the first organization is rectangular, and the four vertices of the first organization are connected to the four adjacent vertices of the first organization in a staggered arrangement, so that the insulation spaces of multiple first organizations are connected.
[0008] Furthermore, it also includes multiple napping structures, which are fitted together with the first and second structures, and the napping structures have a raised nap structure.
[0009] Furthermore, it includes a first group of warp yarns, a second group of warp yarns, a first group of weft yarns, a second group of weft yarns, and a third group of weft yarns. The first group of warp yarns includes several first warp yarns, the second group of warp yarns includes several second warp yarns, the first group of weft yarns includes several first weft yarns, the second group of weft yarns includes several second weft yarns, and the third group of weft yarns includes several third weft yarns. The first warp yarns and the first weft yarns are inelastic yarns, the second warp yarns and the second weft yarns are elastic yarns, and the third weft yarn is a bulky yarn.
[0010] Furthermore, the second structure includes a fabric outer layer, a fabric inner layer, and a fabric middle layer. The fabric outer layer is formed by interlacing the first weft yarn, the second weft yarn, and the first warp yarn. The fabric inner layer is formed by interlacing the second weft yarn and the second warp yarn. The fabric middle layer includes a third weft yarn. The first weft yarn and the first warp yarn are plain-woven on the fabric outer layer. The second weft yarn is interlaced with the first warp yarn and the second warp yarn respectively. The interlacing points of the second weft yarn and the first warp yarn are staggered to achieve the connection between the fabric outer layer and the fabric inner layer. The second weft yarn can shrink, so that the interval between the multiple first warp yarns connected to it becomes smaller, thereby constraining the third weft yarn between adjacent first warp yarns.
[0011] Furthermore, the first structure includes a fabric surface layer, a fabric inner layer, and a fabric middle layer. The fabric surface layer is formed by interlacing the first warp yarn and the first weft yarn, the fabric inner layer is formed by interlacing the second warp yarn and the second weft yarn, and the fabric middle layer includes a third weft yarn. The fabric surface layer forms a protrusion, the fabric middle layer forms a heat-insulating space, and the third weft yarn supports the heat-insulating space. The adjacent second structure can achieve a locking effect on the heat-insulating space inside the first structure.
[0012] Furthermore, it also includes a fourth group of weft yarns, which consists of several fourth weft yarns located below the second weft yarns. The pile structure is formed by the interlacing of the fourth weft yarns and the second warp yarns. The number of interlacing points between the fourth weft yarns and the second warp yarns is less than the number of uninterlaced points. The fourth weft yarns are broken between adjacent interlacing points of the second warp yarns and the fourth weft yarns.
[0013] Furthermore, the fourth weft yarn has an irregular cross-section, a D value of less than 0.3, and a high fiber count to enhance the nap of the pile structure.
[0014] Furthermore, in the second weft yarn, the ratio of the number of interlacing points to the number of non-interlacing points of the second weft yarn and the first warp yarn is 1:3, and the ratio of the number of interlacing points to the number of non-interlacing points of the second weft yarn and the second warp yarn is 3:1. The first warp yarn, the second warp yarn, the first weft yarn, the second weft yarn, the third weft yarn, and the fourth weft yarn are woven together to form a warm fabric, making the fabric structure stable and having a warm and moisture-wicking effect.
[0015] This utility model discloses a thermal insulation fabric comprising a first structure, a second structure, and a pile structure formed integrally by weaving. The first structure forms protrusions on the fabric surface, creating internal thermal insulation spaces supported by expanded yarns to form stable air layers, thereby achieving a thermal insulation effect. The outer and inner layers of the second structure are connected together, and the second structure is staggered from the first structure on the fabric, allowing the second structure to limit the thermal insulation spaces within the first structure and simultaneously improving the overall structural stability of the fabric. Furthermore, the pile structure is closely fitted to the first and second structures. When the pile structure is positioned on the side of the fabric closest to the skin, stable air layers can be formed in both the pile structure and the gaps between adjacent pile structures, enhancing the overall moisture absorption and thermal insulation effect of the fabric. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the surface structure of the thermal insulation fabric in this utility model.
[0017] Figure 2 This is a schematic diagram of the structure inside the thermal insulation fabric of this utility model.
[0018] Figure 3 This is a schematic diagram of the specific structure of the interlacing of warp and weft yarns in the thermal insulation fabric of this utility model. Detailed Implementation
[0019] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a detailed description of the imitation heddle woven fabric and woven shoe upper of this utility model.
[0020] like Figures 1 to 3 As shown, the thermal insulation fabric of this utility model includes multiple first structures 1 and multiple second structures 2 integrally woven. The first structures 1 are raised structures with internal thermal insulation spaces, while the second structures 2 are planar structures used to define the edges of the first structures 1. The first structures 1 have a raised effect compared to the second structures 2. Furthermore, the first structures 1 can be block-shaped, and the second structures 2 can be strip-shaped. The first structures 1 and second structures 2 are spaced apart, with the multiple second structures 2 arranged in a staggered manner in the warp and / or weft directions, and the multiple first structures 1 also arranged in a staggered manner in the warp and / or weft directions. This arrangement ensures the overall structural stability of the thermal insulation fabric while giving it a regular and three-dimensional visual effect.
[0021] Furthermore, a portion of the edge of the insulating space of the first structure 1 is connected to the adjacent insulating spaces of the first structure 1, which are arranged in a staggered manner. This increases the insulating space of the fabric while ensuring the stability of the fabric structure, thereby improving the fabric's insulating effect. Specifically, such as... Figure 1As shown, the insulation space of the first organization 1 is rectangular, and the four vertices of the first organization 1 are connected to the four adjacent vertices of the first organization 1 that are staggered, so that the insulation spaces of multiple first organizations 1 are connected.
[0022] The thermal insulation fabric of this invention also includes a plurality of napping structures 5. These napping structures form the napped area of the fabric. The napping structures 5 are fitted together with the first structure 1 and the second structure 2, and the napping structures 5 have a raised nap structure. Preferably, the napping structures 5 are located on the side of the fabric closest to the skin, so that when the napping structures 5 come into contact with the skin, they can achieve moisture absorption.
[0023] The thermal insulation fabric of this invention is woven from at least two sets of warp yarns and at least four sets of weft yarns. The first set of warp yarns includes several first warp yarns 31, the second set of warp yarns includes second warp yarns 32, the first set of weft yarns includes first weft yarns 41, the second set of weft yarns includes second weft yarns 42, the third set of weft yarns includes third weft yarns 43, and the fourth set of weft yarns includes fourth weft yarns 44. Among them, the first warp yarns 31 and first weft yarns 41 are inelastic yarns, the second warp yarns 32 and second weft yarns 42 are elastic yarns, the third weft yarn 43 is a bulky yarn, and the fourth weft yarn 44 is a moisture-absorbing yarn.
[0024] like Figure 3 As shown, the fabric structure of the thermal insulation fabric of this utility model includes a fabric outer layer, a fabric middle layer, and a fabric inner layer. The four sets of lines in the figure, from top to bottom, represent the first weft yarn 41, the third weft yarn 43, the second weft yarn 42, and the fourth weft yarn 44, respectively. It can be understood that each set of lines represents several weft yarns of the corresponding type.
[0025] Specifically, the fabric surface layer is formed by interlacing the first warp yarns 31 and the first weft yarns 41. Specifically, the first warp yarns 31 and the first weft yarns 41 in the fabric surface layer are tightly interlaced to give the fabric surface layer a compact fabric structure.
[0026] The inner layer of the fabric is made of the second warp yarn 32 and the second weft yarn 42 interwoven together. Some of the second weft yarns 42 also interweave with the first warp yarns 31 in the outer layer of the fabric, and at this position, the interweaving point of the second weft yarn 42 and the first warp yarn 31 is staggered with the interweaving point of the second weft yarn 42 and the second warp yarn 32, so as to connect the outer layer of the fabric and the inner layer of the fabric together.
[0027] Furthermore, a portion of the second weft yarn 42 interweaves with the first warp yarn 31 to form a second structure 2. Each adjacent second structure 2 includes at least one insulating space, which the second structure 2 can limit. Specifically, both the second warp yarn 32 and the second weft yarn 42 are elastic yarns. After dyeing and finishing, the second warp yarn 32 and the second weft yarn 42 shrink, while the first warp yarn 31 and the first weft yarn 41 are inelastic yarns. The lengths of the first warp yarn 31 and the first weft yarn 41 do not change significantly. That is, under the combined shrinkage of adjacent second structures 2, the distance between adjacent second structures 2 decreases, causing a bulge to form on the fabric surface between adjacent second structures 2. This increases the volume of the middle layer of the fabric, creating a structurally stable insulating space within the fabric and accumulating more still air.
[0028] Preferably, in the second structure 2, the number of interlacing points between the second weft yarn 42 and the first warp yarn 31 is 3, and every 10 second weft yarns 42 interlace with the first warp yarn 31 along the same interlacing trajectory, so that the outer layer of the fabric and the inner layer of the fabric form a stable connection.
[0029] Furthermore, the intermediate layer of the fabric includes a third weft yarn 43. After subsequent dyeing and finishing, the interlacing of the second weft yarn 42 with the first warp yarn 31 can constrain the third weft yarn 43. Specifically, in the second structure 2, the second weft yarn 42 can shrink, thereby reducing the spacing between the multiple first warp yarns 3 connected to it, so as to constrain the third weft yarn 3 between adjacent first warp yarns 3.
[0030] Furthermore, between adjacent second structures 2, the inner layer of the fabric shrinks while the outer layer does not shrink. The outer layer of the fabric forms a bulge under the action of the inner layer. The third weft yarn 43 is a bulky yarn, which is a yarn with a fluffy structure. The third weft yarn 43 with a fluffy structure fills the space in the middle layer of the fabric, so that the warm space formed after the fabric surface bulges will not collapse, and a stable air layer is formed in the warm space to enable the fabric to achieve a warming effect.
[0031] like Figure 3 As shown, the fourth weft yarn 44 is located below the second weft yarn 42, and the fourth weft yarn 44 and the second warp yarn 32 interweave with each other. Furthermore, the fourth weft yarn 44 and the second warp yarn 32 interweave alternately, with the fourth weft yarn 44 breaking between adjacent interlacing points of the second warp yarn 32 and the fourth weft yarn 44. After a napping treatment, a napped structure 5 is formed. Furthermore, the fourth weft yarn 44 is a moisture-wicking yarn, so the napped structure 5 also has a moisture-wicking effect.
[0032] Furthermore, the number of interlacing points between the fourth weft yarn 44 and the second warp yarn 32 is less than the number of non-interlacing points between the fourth weft yarn 44 and the second warp yarn 32, providing space for the pile cutting and allowing the pile structure 5 to have sufficient length to protrude from the inner layer of the fabric. When the pile structure 5 protrudes and is positioned on the side closest to human skin, the pile structure 5 is in contact with the skin, providing a soft touch, and the pile structure 5 can hold and gather a large amount of air, thus preventing heat loss with the flowing air and further enhancing the warmth retention effect.
[0033] Furthermore, the fourth weft yarn has a D value of less than 0.3 and a high fiber count, giving the napped structure 5 a delicate and soft feel. A high fiber count refers to the large number of fibers contained in the cross-section of the yarn. The fourth weft yarn 44 has a high density, a soft touch, and strong moisture absorption. The napped structure 5 is formed by cutting and brushing the fourth weft yarn 44, resulting in a good nap effect and the formation of a stable air layer to prevent heat loss with airflow, further improving warmth retention.
[0034] The D value mentioned above represents denier, a unit describing the thickness of yarn. Specifically, the D value is expressed by converting the weight (in grams) of 9000 meters of yarn at standard moisture regain into a numerical value.
[0035] Furthermore, the fourth weft yarn 44 has an irregular cross-section to increase the contact area between the fourth weft yarn 44 and the skin, which is beneficial for moisture absorption. Here, the irregular cross-section is defined as the cross-sectional shape of a single fiber in the fourth yarn not being a traditional circle, but being designed into a specific geometric shape through a special process, preferably a grid shape or an asterisk shape.
[0036] Furthermore, the pile structure 5 can have different structural shapes, such as square, hexagonal, etc. The specific structural features of the pile structure 5 are achieved by changing the specific positions of the interlacing points of the fourth weft yarn 44 and the second warp yarn 32, as well as the value of the uninterlacing points between them. Furthermore, there are gaps between adjacent pile structures 5 to form a warming space between adjacent pile structures 5, thereby improving the overall warmth retention of the fabric.
[0037] Furthermore, at the intervals between adjacent pile structures 5, the fourth weft yarn 44 and the second warp yarn 32 interweave with each other. Specifically, the interweaving method of the fourth weft yarn 44 and the second warp yarn 32 is plain weave or interlaced weave. The number of uninterlaced points when the fourth weft yarn 44 and the second warp yarn 32 interlaced at the intervals between adjacent pile structures 5 is less than the number of uninterlaced points when the fourth weft yarn 44 and the second warp yarn 32 interlaced in the pile structure 5, so as to achieve the moisture absorption and warmth retention effect while ensuring the stability of its structure.
[0038] The following explanation is provided in conjunction with the various structures on the fabric.
[0039] The first weave 1 comprises a lining layer, a surface layer, and a middle layer. The surface layer is composed of inelastic first warp yarns 31 and first weft yarns 41 interwoven together. The lining layer is composed of elastic second warp yarns 32 and second weft yarns 42 interwoven together. The middle layer includes a third weft yarn 43. The surface layer of the first weave 1 forms protrusions to create insulating spaces within the middle layer. These insulating spaces are supported by the third weft yarn 43 to prevent deformation that could affect the insulating effect.
[0040] The second structure 2 includes a fabric outer layer, a fabric inner layer, and a fabric middle layer. The fabric outer layer is formed by interlacing the first weft yarn 41, the second weft yarn 42, and the first warp yarn 31; the fabric inner layer is formed by interlacing the second weft yarn 42 and the second warp yarn 32; and the fabric middle layer includes a third weft yarn 43.
[0041] Specifically, in the second weft 2, the first weft yarn 41 and the first warp yarn 31 interweave in a plain weave pattern on the fabric surface to form a tight fabric structure. The second weft yarn 42 interweaves with both the first and second warp yarns 31 and 32, respectively. The interweaving points of the second weft yarn 42 and the first warp yarn 31 are staggered with those of the second weft yarn 42 and the second warp yarn 32 to connect the fabric surface and the fabric lining. Furthermore, the number of interweaving points between the second weft yarn 42 and the second warp yarn 32 is greater than the number of uninterweaving points, while the number of interweaving points between the second weft yarn 42 and the first warp yarn 31 is less than the number of uninterweaving points. This connects the fabric surface and the fabric lining while providing space for subsequent dyeing and finishing, making the structure of the second weft 2 even tighter.
[0042] Furthermore, the second weft yarn 42 and the second warp yarn 32 are elastic yarns. After dyeing and finishing, both the second warp yarn 32 and the second weft yarn 42 will shrink significantly, reducing the distance between the interlacing points of the second weft yarn 42 and the first warp yarn 31. Meanwhile, the first warp yarn 31 and the first weft yarn 41 on the fabric surface are non-elastic yarns and will not deform. That is, under the action of the second weft yarn 42, on the one hand, the interlacing points of the second weft yarn 42 and the first warp yarn 31 in the second structure 2 are tightened, making the connection between the fabric surface and the fabric inner layer more stable. On the other hand, each adjacent second structure 2 includes at least one first structure 1. Adjacent second structures 2 can achieve a sealing effect on the insulating space within at least one first structure 1, thus ensuring fabric structural stability and insulation.
[0043] Furthermore, after the subsequent dyeing and finishing process, the interweaving of the second weft yarn 42 and the first warp yarn 31 in the second structure 2 can also constrain the third weft yarn 43. Specifically, after the subsequent dyeing and finishing process, the second weft yarn 42 shrinks, which reduces the spacing between the multiple first warp yarns 3 connected to it, thereby constraining the third weft yarn 3 between adjacent first warp yarns 3.
[0044] Preferably, in the second weft yarn 42 and the first warp yarn 31, the ratio of the number of interlacing points to the number of non-interlacing points is 1:3, and the ratio of the number of interlacing points to the number of non-interlacing points of the second weft yarn 42 and the second warp yarn 32 is 3:1.
[0045] Through the above fabric structure design, the second structure 2 has a tight fabric structure, realizing the connection between the outer and inner layers of the fabric. The adjacent second structure 2 can also achieve the edge locking effect of the insulation space of the first structure 1, so as to improve the overall warmth and structural stability of the fabric.
[0046] like Figure 3 As shown, the napping structure 5 is formed by the interlacing of the fourth weft yarn 44 and the second warp yarn 32. In the napping structure 5, the fourth weft yarn 44 and the second warp yarn 32 interlace alternately, and the number of interlacing points of the fourth weft yarn 44 and the second warp yarn 32 is less than the number of non-interlacing points. The fourth weft yarn 44 breaks between adjacent interlacing points of the fourth weft yarn 44 and the second warp yarn 32 and is treated with napping to give the napping structure 5 a napping effect.
[0047] When the napped structure 5 is located in the inner layer of the fabric, it comes into contact with the skin, feels soft and has a strong nap, which is conducive to moisture absorption. The napped structure 5 can also form a stable air layer that can hold and gather a large amount of air, thus preventing heat from being lost with the airflow and further enhancing the warmth retention effect.
[0048] The thermal insulation fabric of this utility model includes a first structure 1, a second structure 2, and a pile structure 5, all formed by integrally weaving at least two sets of warp yarns and at least four sets of weft yarns. The first structure 1 forms a protrusion on the fabric surface, and a thermal insulation space is formed inside the first structure 1. The thermal insulation space is supported by a third weft yarn 43, which is an expanding yarn, so that the thermal insulation space in the first structure 1 has a stable structure. That is, the middle layer of the fabric in the first structure 1 will not collapse after it bulges up, and the fabric can form a stable air layer in the space to achieve the thermal insulation effect.
[0049] Furthermore, the outer and inner layers of the second fabric structure 2 are connected together, and the second fabric structure 2 is staggered with the first fabric structure 1 on the fabric. This allows the second fabric structure 2 to limit the heat-insulating space inside the first fabric structure 1, while also improving the overall structural stability of the fabric. Furthermore, the pile structure 5 is fitted closely to the first fabric structure 1 and the second fabric structure 2. The pile structure 5 has both pile-forming and moisture-wicking effects. When the pile structure 5 is positioned on the side of the fabric closest to the skin, the gaps between the pile structure 5 and adjacent pile structures 5 can accommodate and gather a large amount of air, preventing heat loss with the flowing air and forming a stable air layer to improve the overall moisture-wicking and heat-insulating effect of the fabric.
[0050] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific descriptions herein should not be construed as limiting the substance and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention. The various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. Therefore, if those skilled in the art design similar structures and embodiments without departing from the inventive spirit of the present invention, they should all fall within the protection scope of the present invention.
[0051] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
Claims
1. A thermal insulation fabric, characterized in that, It includes multiple first structures and multiple second structures formed by one-piece woven fabric. The first structure is a raised structure with a heat-insulating space inside. The second structure is a planar structure used to define the edge of the first structure. The first structure and the second structure are spaced apart. The multiple second structures are staggered in the warp and / or weft directions. The multiple first structures are also staggered in the warp and / or weft directions to make the overall structure of the fabric stable and have a three-dimensional effect.
2. The thermal insulation fabric as described in claim 1, characterized in that, The edge of a portion of the insulation space of the first organization is connected to the insulation spaces of the first organization that are adjacent to it and arranged in a staggered manner.
3. The thermal insulation fabric as described in claim 2, characterized in that, The insulation space of the first organization is rectangular. The four vertices of the first organization are connected to the four adjacent vertices of the first organization in a staggered arrangement, so that the insulation spaces of multiple first organizations are connected.
4. The thermal insulation fabric as described in claim 1, characterized in that, It also includes multiple napping structures, which are fitted together with the first and second structures, and the napping structures are raised nap structures.
5. The thermal insulation fabric as described in any one of claims 1 to 4, characterized in that, It includes a first group of warp yarns, a second group of warp yarns, a first group of weft yarns, a second group of weft yarns, and a third group of weft yarns. The first group of warp yarns includes several first warp yarns, the second group of warp yarns includes several second warp yarns, the first group of weft yarns includes several first weft yarns, the second group of weft yarns includes several second weft yarns, and the third group of weft yarns includes several third weft yarns. The first warp yarns and the first weft yarns are inelastic yarns, the second warp yarns and the second weft yarns are elastic yarns, and the third weft yarn is bulky yarn.
6. The thermal insulation fabric as described in claim 5, characterized in that, The second structure includes a fabric outer layer, a fabric inner layer, and a fabric middle layer. The fabric outer layer is made of a first weft yarn, a second weft yarn, and a first warp yarn interwoven together. The fabric inner layer is made of a second weft yarn and a second warp yarn interwoven together. The fabric middle layer includes a third weft yarn. The first weft yarn and the first warp yarn are plain-weave interwoven on the fabric outer layer. The second weft yarn is interwoven with the first warp yarn and the second warp yarn respectively. The interlacing points of the second weft yarn and the first warp yarn are staggered to achieve the connection between the fabric outer layer and the fabric inner layer. The second weft yarn can shrink, so that the interval between the multiple first warp yarns connected to it becomes smaller, thereby constraining the third weft yarn between adjacent first warp yarns.
7. The thermal insulation fabric as described in claim 6, characterized in that, The first structure includes a fabric outer layer, a fabric inner layer, and a fabric middle layer. The fabric outer layer is made of a first warp yarn and a first weft yarn interwoven together. The fabric inner layer is made of a second warp yarn and a second weft yarn interwoven together. The fabric middle layer includes a third weft yarn. The fabric outer layer forms a protrusion, and the fabric middle layer forms a warming space. The third weft yarn supports the warming space. The adjacent second structure can achieve a locking effect on the warming space inside the first structure.
8. The thermal insulation fabric as described in claim 7, characterized in that, It also includes a fourth weft yarn, which consists of several fourth weft yarns located below the second weft yarn. The pile structure is formed by the interlacing of the fourth weft yarn and the second warp yarn. The number of interlacing points between the fourth weft yarn and the second warp yarn is less than the number of uninterlaced points. The fourth weft yarn breaks between adjacent interlacing points of the second warp yarn and the fourth weft yarn.
9. The thermal insulation fabric as described in claim 8, characterized in that, The fourth weft yarn has an irregular cross-section, a D value of less than 0.3, and a high fiber count to enhance the nap of the pile structure.
10. The thermal insulation fabric as described in claim 8, characterized in that, In the second weft yarn, the ratio of the number of interlacing points of the second weft yarn to the number of non-interlacing points is 1:3, and the ratio of the number of interlacing points of the second weft yarn to the number of non-interlacing points of the second warp yarn is 3:
1. The first warp yarn, the second warp yarn, the first weft yarn, the second weft yarn, the third weft yarn, and the fourth weft yarn are woven together to form a warm fabric, making the fabric structure stable and having a warm and moisture-wicking effect.