Thermal composite fabric
By combining EKS fiber monofilaments and shape memory fiber layers, the problem of poor comfort at high temperatures and discomfort after sweating in existing thermal insulation fabrics is solved. It achieves automatic temperature and sweat distribution adjustment, improving the warmth retention and wearing comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINJIANG SANYIZHONGTAI TECH CO LTD
- Filing Date
- 2026-06-08
- Publication Date
- 2026-07-14
AI Technical Summary
Existing thermal insulation fabrics affect comfort when worn at excessively high temperatures, and become uncomfortable when soaked with sweat and cling to the torso, as they cannot automatically adjust.
It adopts a composite structure of EKS fiber monofilament, moisture-absorbing base layer, heat-storing fiber layer and microporous heat-insulating membrane material, combined with shape memory fiber layer, to achieve automatic adjustment of gaps and sweat redistribution. Temperature and comfort are regulated by heat release and air circulation through EKS fiber monofilament.
It achieves automatic adjustment under different temperature conditions, avoiding the discomfort of overheating and sweat sticking to the torso, thus improving wearing comfort and warmth.
Smart Images
Figure CN224490314U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fabrics, and in particular to a thermal insulation composite fabric. Background Technology
[0002] Composite fabrics are a new type of material made by bonding one or more layers of textile materials, non-woven materials and other functional materials together. Compared with fabrics made of a single material, they can achieve the purpose of warmth and waterproofing through structural design. Its core goal is to achieve the effect of 1+1>2, combining the advantages of each layer of material and making up for their respective shortcomings.
[0003] Existing technologies have developed numerous types of thermal insulation fabrics. However, current thermal insulation fabrics have some drawbacks. First, the wearing temperature is not necessarily better the higher it is. If the fabric continues to generate heat or provide insulation, it may affect wearing comfort, as the fabric cannot automatically adjust according to the situation. Second, when the thermal insulation fabric is soaked with sweat from the wearer's torso, it tends to stick tightly to the torso surface, causing discomfort and affecting the experience. The purpose of this utility model is to propose a new fabric structure to solve the above-mentioned technical problems and promote the technological development in this field. Utility Model Content
[0004] The purpose of this invention is to provide a thermal insulation composite fabric to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes a fabric surface layer, a moisture-absorbing base layer, and a first EKS fiber monofilament. The fabric surface layer has strip-shaped slits. The fabric surface layer refers to the material layer located on top of the composite fabric. The specific material of the fabric used is not a necessary technical feature nor is it the technical content that the applicant wants to protect. Therefore, it will not be disclosed further. In implementation, technicians can select different materials according to actual production needs without having a substantial impact on the technical effect. The moisture-absorbing base fabric layer is folded to form a folded portion, which is formed by folding and hot-pressing the moisture-absorbing base fabric layer. The folded portion is connected to the bottom surface of the fabric surface layer by hot pressing. The hot pressing process can be as shown in the attached figure. Figure 6 The aforementioned hot-press roller structure is realized; The first EKS fiber monofilament connects the fabric surface layer and the moisture-wicking backing layer. The connection structure between the first EKS fiber monofilament and the fabric surface layer and the moisture-wicking backing layer can refer to existing sandwich mesh fabrics (as shown in the attached diagram). Figure 5 As shown), EKS fiber monofilament refers to a thread composed of EKS fiber, which contains a large number of hydrophilic groups (such as amino and carboxyl groups) that can quickly capture and lock water molecules, releasing heat in the process. EKS fiber is existing technology, so its specific working principle and composition will not be further explained.
[0006] To optimize the above technical solution, further measures are taken, including a heat-storing fiber layer and a microporous thermal insulation membrane. The bottom surface of the moisture-absorbing base layer is bonded to the heat-storing fiber layer. The heat-storing fiber layer refers to a material layer woven from existing heat-storing fibers, located on the inner side of the composite fabric and in contact with the wearer's torso. It can absorb heat dissipated by the torso, reducing heat loss and helping to improve the warmth retention of the composite fabric. The microporous thermal insulation membrane is set on the outer surface of the fabric. The microporous thermal insulation membrane refers to a type of thin film material containing micron / nano-scale pores in the prior art. Since air is a poor conductor of heat, the air within the pores is used to limit heat conduction / heat transfer. The microporous insulation membrane material achieves a heat preservation effect by allowing air to flow through the fabric. At the same time, the microporous insulation membrane material also has good breathability and will not affect the air circulation on both sides of the composite fabric. This is existing technology known to those skilled in the art, so its specific composition and working principle will not be further explained. Technical personnel can consider the actual needs such as production process and procurement cost to select different types of microporous insulation membrane materials, such as polyurethane (PU) microporous membrane, expanded polyethylene (ePE), electrospun nanofilm and aerogel composite membrane, etc. The purpose of this design is to prevent sweat from leaving through the strip gaps and adhering to the surface of the fabric for reabsorption, while also blocking rainwater.
[0007] As a further improvement to the above technical solution: the moisture-absorbing base layer has better moisture absorption than the heat-retaining fiber layer. Due to the difference in moisture absorption between the moisture-absorbing base layer and the heat-retaining fiber layer, the sweat oozing from the wearer's torso will be absorbed after contact with the heat-retaining fiber layer. Subsequently, due to the difference in moisture absorption, the sweat will migrate to the moisture-absorbing base layer to achieve sweat redistribution. This can prevent the heat-retaining fiber layer from fully absorbing sweat and sticking tightly to the wearer's torso surface, which helps to improve wearing comfort. At the same time, the sweat absorbed by the moisture-absorbing base layer can act on the first EKS fiber monofilament, promoting the first EKS fiber monofilament to generate heat and thus achieving a heat preservation effect.
[0008] As a further improvement to the technical solution, it also includes a second EKS fiber monofilament, one end of which is connected to the moisture-absorbing base layer. The length of the second EKS fiber monofilament is shorter than that of the first EKS fiber monofilament. The second EKS fiber monofilament is fixed at one end and its length is shorter than that of the first EKS fiber monofilament. Its flexibility is superior to that of the first EKS fiber monofilament, and it can effectively capture the sweat vapor that is free between the first EKS fiber monofilaments. The two EKS fiber monofilaments work together to achieve a good heat preservation effect.
[0009] As an improvement to the aforementioned technical solution: the strip-shaped gap is long and narrow, and a shape memory fiber layer is sewn onto the edge of the strip-shaped gap. The shape memory fiber layer is made of polymer memory fiber. Technicians can adjust its phase change temperature by changing the composition and proportion of the polymer memory fiber. When the temperature of the composite fabric is lower than the phase change temperature, the shape memory fiber is straight, which closes the strip-shaped gap. When the temperature of the composite fabric is higher than the phase change temperature, the shape memory fiber is deformed and twisted, which makes the two sides of the strip-shaped gap staggered. This helps the air to circulate inside and outside, promotes sweat evaporation, and avoids the moisture-absorbing bottom layer from swelling. When the air flows, the second EKS fiber monofilament can swing during the air flow, which helps the sweat on the second EKS fiber monofilament to separate from the second EKS fiber monofilament.
[0010] Furthermore, the projection of the strip-shaped gap onto the moisture-absorbing base layer is offset from and does not contact the fold. This design aims to prevent the fold from blocking the strip-shaped gap and affecting the airflow in the strip-shaped gap area.
[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: A. By combining automatically adjustable strip-shaped gaps with highly staggered first and second EKS fiber monofilaments, the composite fabric can keep warm while avoiding overheating and causing discomfort to the wearer. B. Based on the difference in hygroscopicity, sweat redistribution is achieved, which can prevent sweat from soaking the composite fabric and sticking to the torso surface, causing discomfort to the wearer. C. The first and second EKS fiber monofilaments have differences in height and flexibility, which can effectively capture sweat vapor and ensure stable heat generation of both the first and second EKS fiber monofilaments. Attached Figure Description
[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention (Example 1); Figure 2 This is a schematic diagram of the connection structure of the present invention (Example 1); Figure 3 This is a three-dimensional structural diagram of the present invention (Example 2); Figure 4 This is a schematic diagram of the connection structure of the present invention (Example 2); Figure 5 This is a schematic diagram of an existing sandwich mesh structure; Figure 6 This is a schematic diagram of the hot-press roller structure; In the diagram: Fabric surface layer - 100, strip seam - 101, shape memory fiber layer - 102, moisture-wicking base layer - 200, folded section - 201, first EKS fiber monofilament - 300, heat-retaining fiber layer - 400, microporous thermal insulation membrane - 500, second EKS fiber monofilament - 600 Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1
[0014] Please see Figure 1 and Figure 2 This utility model provides a thermal insulation composite fabric, including a fabric surface layer 100, a moisture-absorbing base layer 200, a first EKS fiber monofilament 300, and a second EKS fiber monofilament 600. The fabric surface layer 100 has a strip-shaped slit 101, which is long and narrow. A shape memory fiber layer 102 is sewn along the edge of the strip-shaped slit 101. The moisture-absorbing base fabric layer 200 is folded to form a folded portion 201. The folded portion 201 is formed by folding the moisture-absorbing base fabric layer 200 and is connected to the fabric surface layer 100. The orthographic projection of the strip-shaped gap 101 on the moisture-absorbing base fabric layer 200 is offset from and does not contact the folded portion 201. The first EKS fiber monofilament 300 connects the fabric surface layer 100 and the moisture-absorbing base layer 200; One end of the second EKS fiber monofilament 600 is connected to the moisture-absorbing base fabric layer 200, and the length of the second EKS fiber monofilament 600 is less than that of the first EKS fiber monofilament 300. Example 2
[0015] Please see Figure 3 and Figure 4 This utility model provides a thermal insulation composite fabric, including a fabric surface layer 100, a moisture-absorbing base layer 200, a first EKS fiber monofilament 300, a heat-storing fiber layer 400, a microporous thermal insulation membrane 500, and a second EKS fiber monofilament 600. The fabric surface layer 100 has a strip-shaped slit 101, which is long and narrow. A shape memory fiber layer 102 is sewn along the edge of the strip-shaped slit 101. A folded portion 201 is formed by folding the moisture-absorbing base fabric layer 200. The folded portion 201 is formed by folding the moisture-absorbing base fabric layer 200 and is connected to the fabric surface layer 100. The orthographic projection of the strip-shaped gap 101 on the moisture-absorbing base fabric layer 200 is offset from and does not contact the folded portion 201. The first EKS fiber monofilament 300 connects the fabric surface layer 100 and the moisture-absorbing base layer 200. The bottom surface of the moisture-absorbing base fabric layer 200 is bonded to the heat-storing fiber layer 400. The moisture-absorbing base fabric layer 200 has better moisture absorption than the heat-storing fiber layer 400. The microporous heat-insulating membrane material 500 is set on the top surface of the fabric surface layer 100. One end of the second EKS fiber monofilament 600 is connected to the moisture-absorbing base fabric layer 200, and the length of the second EKS fiber monofilament 600 is less than that of the first EKS fiber monofilament 300.
[0016] Working principle: For Examples 1 and 2, the sweat exuded by the wearer's torso can be absorbed by the moisture-absorbing base layer 200. Under the action of sweat, the first EKS fiber monofilament 300 and the second EKS fiber monofilament 600 will generate heat, thereby making the composite fabric play a heat-insulating role.
[0017] When the temperature of the composite fabric is lower than the phase transition temperature of the shape memory fiber layer 102, the shape memory fiber layer 102 is straight, which closes the strip gap 101 and restricts the flow of air in the strip gap 101. When the temperature of the composite fabric is higher than the phase transition temperature of the shape memory fiber layer 102, the shape memory fiber layer 102 is twisted and deformed, which helps air to flow between the fabric surface layer 100 and the moisture-absorbing base layer 200 through the strip gap 101. This helps to dissipate heat and avoid overheating, which can cause discomfort to the wearer. At the same time, the flowing air can promote the evaporation of sweat and improve the drying efficiency of the first EKS fiber monofilament 300 and the second EKS fiber monofilament 600, ensuring continuous heat generation and giving the composite fabric a heat-insulating effect.
[0018] The main difference between Example 2 and Example 1 is that the bottom surface of the moisture-absorbing base layer 200 is provided with a heat-retaining fiber layer 400 and a microporous heat-insulating membrane 500 provided on the outer side of the fabric surface layer 100. The heat-retaining fiber layer 400 can accumulate heat and reduce heat loss. At the same time, due to the difference in hygroscopicity between the heat-retaining fiber layer 400 and the moisture-absorbing base layer 200, sweat can migrate to the moisture-absorbing base layer 200, which can realize the redistribution of sweat and avoid the sweat soaking the heat-retaining fiber layer 400 and sticking to the wearer's torso, causing discomfort.
[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A thermal insulation composite fabric, characterized in that, include: The fabric surface layer (100) has a strip-shaped slit (101) on it. The strip-shaped slit (101) is long and the edge of the strip-shaped slit (101) is sewn with a shape memory fiber layer (102). A moisture-absorbing base fabric layer (200) is folded to form a folded portion (201), the folded portion (201) is formed by folding the moisture-absorbing base fabric layer (200) and the folded portion (201) is connected to the fabric surface layer (100); First EKS fiber monofilament (300), the first EKS fiber monofilament (300) connects the fabric surface layer (100) and the moisture-wicking backing layer (200). The second EKS fiber monofilament (600) is connected at one end to the moisture-absorbing base layer (200), and the length of the second EKS fiber monofilament (600) is less than that of the first EKS fiber monofilament (300).
2. The thermal insulation composite fabric according to claim 1, characterized in that: It also includes a heat-storing fiber layer (400) and a microporous heat-insulating membrane (500), wherein the bottom surface of the moisture-absorbing base layer (200) is bonded to the heat-storing fiber layer (400), and the microporous heat-insulating membrane (500) is disposed on the outside of the fabric surface layer (100).
3. The thermal insulation composite fabric according to claim 2, characterized in that: The moisture-absorbing base layer (200) has better moisture absorption than the heat-storing fiber layer (400).
4. A thermal insulation composite fabric according to any one of claims 1-3, characterized in that: The orthographic projection of the strip-shaped slit (101) onto the moisture-absorbing base fabric layer (200) is offset from and does not contact the fold (201).