Composite fabric structure with coolness enhancement

Abstract

The present application discloses a composite fabric structure with cooling enhancement, which comprises a first fabric layer provided with a fluorescent substance and an infrared reflective substance, a film layer provided with a moisture absorbing substance, and a second fabric layer provided with a far infrared substance, wherein the first fabric layer, the film layer and the second fabric layer are sequentially stacked. In this way, the fluorescent substance of the first fabric layer absorbs ultraviolet rays and then converts them into visible light which is beneficial to the skin, while producing an ultraviolet shielding effect. The infrared reflective substance of the first fabric layer can reflect infrared rays in the environment, reducing the penetration of infrared rays to achieve a cooling effect. The moisture absorbing substance of the film layer can absorb moisture to reduce the temperature of the fabric, making the body feel cool, and the far infrared substance of the second fabric layer can absorb part of the infrared rays penetrating the first fabric layer and the body heat energy, producing far infrared rays into the body, improving the functional benefits of the composite fabric structure.

Description

TECHNICAL FIELD

[0001] The present application relates to a fabric structure, in particular to a composite fabric structure. BACKGROUND

[0002] Cooling-related fabrics often use heat-conducting materials to improve the heat conduction of the fabric, thereby achieving the effect of cooling. Such fabrics only have an instant cooling sensation. To prolong the cooling effect, high-hygroscopic materials are often used to achieve the effect of cooling by using the high specific heat of water. Generally, the higher the moisture absorption rate, the better the cooling effect, but the comfort of wearing will decrease, so the use of high-hygroscopic materials in fabrics has its limitations. There are also ways to increase the water content of the fabric by increasing the hydrophilic functional groups on the surface of the resin molecules, but due to the characteristics of high-molecular polymers, the increase in water content is still limited. How to balance the comfort of wearing and improve the cooling performance of the fabric is still a key point in the development of cooling fabrics.

[0003] Prior art such as Chinese Patent No. CN214294790U discloses an "ultraviolet-resistant polyester fiber cooling composite fabric", which includes an ultraviolet-resistant fabric layer, a reflective fabric layer, and an ice-cooling fabric layer. The layers are bonded to form a composite fabric structure by a polyurethane adhesive layer. Chinese Patent No. CN209633957U discloses a "composite woven fabric with cooling function", which has a three-layer structure of a woven base fabric, a heat-conducting film, and a non-woven fabric.

[0004] However, the composite fabrics of the prior art are all stacked and bonded using fabric layers with different functions to form a multi-layer composite fabric. Increasing the number of layers reduces the air permeability of the fabric and the vertical heat conduction from the inside to the outside of the fabric. Although the ice-cooling fabric layer or the heat-conducting film is used in the middle, the heat conduction between the upper and lower layers limits the overall cooling performance and cannot effectively increase it.

[0005] Therefore, how to overcome the above-mentioned deficiencies is the technical problem to be solved by the present application. SUMMARY

[0006] In view of the problems and deficiencies of the prior art, the present application aims to provide a composite fabric structure with enhanced cooling.

[0007] To achieve the above-mentioned purposes, the present application provides a composite fabric structure with enhanced cooling, which comprises:

[0008] a first fabric layer provided with a fluorescent substance and an infrared reflective substance;

[0009] a film layer provided with a hygroscopic substance; and

[0010] a second fabric layer provided with a far-infrared substance, wherein the first fabric layer, the film layer, and the second fabric layer are sequentially stacked.

[0011] The fluorescent substance of the first fabric layer is distributed in the yarn of the first fabric layer.

[0012] The infrared reflective substance of the first fabric layer is distributed in the yarn of the first fabric layer.

[0013] The film layer is provided with a plurality of micropores.

[0014] The far infrared substance is in the form of powder distributed in the yarn of the second fabric layer.

[0015] The fluorescent substance of the first fabric layer is a monoxide fluorescent powder.

[0016] The infrared reflective substance of the first fabric layer is a powder with a refractive index higher than 2.0 and a surface modification.

[0017] The film layer contains a hygroscopic substance, which is silica gel or activated alumina, in addition to polyvinyl alcohol (PVA) resin.

[0018] The film layer contains a thermoplastic polyolefin (TPO) in addition to a hygroscopic substance, which is a super absorbent resin (SAR) or xylose alcohol.

[0019] The far infrared substance of the second fabric layer can be selected from oxides including silicon dioxide (SiO2), titanium dioxide (TiO2), aluminum oxide (Al2O3), and zirconium oxide (ZrO2), or the far infrared substance of the second fabric layer is silicon carbide, zirconium carbide, graphene, carbon powder, carbon tube, tourmaline, or maifanite.

[0020] In this way, the fluorescent substance of the first fabric layer absorbs ultraviolet light and then converts it into visible light that is beneficial to the skin, while also producing an ultraviolet shielding effect. The infrared reflective substance of the first fabric layer reflects infrared light from the environment, reducing the penetration of infrared light and achieving a cooling effect. The hygroscopic substance of the film layer can absorb moisture, reducing the temperature of the fabric and making the body feel cool. The far infrared substance of the second fabric layer can absorb part of the infrared light that penetrates the first fabric layer and body heat, generating far infrared light that enters the body and improving the functional benefits of the composite fabric structure. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Schematic diagram of the composite fabric structure with enhanced cooling according to the present application.

[0022] Figure 2A schematic diagram showing the distribution of fluorescent substance and infrared reflective substance in the yarn of the first fabric layer in the present application.

[0023] Figure 3 A schematic diagram showing the first fabric layer provided with micropores in the present application.

[0024] Figure 4 A schematic diagram showing the second fabric layer provided with far infrared substance in the present application.

[0025] Figure 5 A schematic diagram showing the temperature rise test of the composite fabric structure with cooling enhancement in the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS 1-First fabric layer; 11-Fluorescent substance; 12-Infrared reflective substance; 2-Thin film layer; 21-Micropore; 3-Second fabric layer; 31-Far infrared substance; A-General PET fabric structure with transparent film; B-Fabric structure of PET with infrared reflective substance and transparent film; C-Fabric structure of PET with infrared reflective substance and thin film containing moisture absorbing substance. DETAILED DESCRIPTION

[0027] The advantages and features of the present application will become more apparent with the description of the specific embodiments. However, these embodiments are only exemplary and do not constitute any limitation on the scope of the present application. Those skilled in the art should understand that the details and forms of the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application, and such modifications and replacements fall within the protection scope of the present application.

[0028] Referring to FIGS. 1-4, Figure 1 and Figure 2 The present application provides a composite fabric structure with cooling enhancement, which comprises a first fabric layer 1, a thin film layer 2 and a second fabric layer 3.

[0029] The first fabric layer 1 is provided with a fluorescent substance 11 and an infrared reflective substance 12. Specifically, the fluorescent substance 11 of the first fabric layer 1 is an oxide fluorescent powder, and the fluorescent substance 11 of the first fabric layer 1 is distributed in the yarn of the first fabric layer 1. The infrared reflective substance 12 of the first fabric layer 1 is a powder with a refractive index higher than 2.0, such as titanium dioxide (TiO2) and its surface modified (Surface Modification) powder. The infrared reflective substance 12 is a powder, and the infrared reflective substance 12 is distributed in the yarn of the first fabric layer 1. The first fabric layer 1 is woven from the yarn containing the fluorescent substance 11 and the yarn containing the infrared reflective substance 12.

[0030] The film layer 2 is provided with a moisture-absorbing substance. Specifically, the film layer 2 is a film, which can contain polyvinyl alcohol (PVA) resin in addition to the moisture-absorbing substance, in which case the moisture-absorbing substance is silica gel or activated alumina. Alternatively, the film layer 2 can contain thermoplastic polyolefin (TPO) in addition to the moisture-absorbing substance, in which case the moisture-absorbing substance is super absorbent resin (SAR) or xylose alcohol, which is a typical functional polymer material capable of absorbing water and having strong water-retaining capacity.

[0031] Referring to FIG. 1, Figure 3 The film layer 2 can be a hydrophilic film having hydrophilic groups, which can adsorb moisture emitted by the human body and in the environment, or the film layer 2 can be a microporous film provided with a plurality of micropores 21, the size of which is much smaller than that of a water droplet but much larger than the diameter of a water molecule, so that the film layer 2 can block the penetration of water even under pressure and allow the moisture emitted by the human body to be discharged, while the water molecules cannot pass through under the action of surface tension, thereby having the effect of preventing water but allowing moisture to pass through. The film layer 2 can be one of a thermoplastic polyurethane (TPU) film and a polyurethane (PU) film.

[0032] Referring to FIG. 1, Figure 4 The second fabric layer 3 is provided with a far-infrared substance 31, and the first fabric layer 1, the film layer 2, and the second fabric layer 3 are sequentially stacked. Specifically, the far-infrared substance refers to a substance that absorbs infrared rays to generate far-infrared rays, and the far-infrared substance 31 can be selected from oxides including silicon dioxide (SiO2), titanium dioxide (TiO2), aluminum oxide (Al2O3), and zirconium oxide (ZrO2). Alternatively, the far-infrared substance 31 can be a carbide such as silicon carbide, zirconium carbide, or graphene, or a carbon material, or a mineral powder such as tourmaline or zeolite, and the far-infrared substance 31 is distributed in the yarn of the second fabric layer 3 in the form of a powder.

[0033] In this way, the fluorescent substance 11 of the first fabric layer 1 absorbs ultraviolet rays and then converts them into visible light that is beneficial to the skin, while also having the effect of shielding ultraviolet rays. The infrared-reflecting substance 12 of the first fabric layer 1 reflects infrared rays in the environment to reduce the penetration of infrared rays and thus achieve cooling. The moisture-absorbing substance of the film layer 2 can adsorb water to reduce the temperature of the fabric, making the body feel cool, and the far-infrared substance 31 of the second fabric layer 3 can absorb part of the infrared rays that have penetrated the first fabric layer 1 and the heat energy of the body to generate far-infrared rays that enter the body, thereby improving the functional benefits of the composite fabric structure.

[0034] Please see Figure 1 and Figure 5 As shown, the cooling effect of the composite fabric structure was understood through a temperature rise test. A 300W infrared lamp was used as the heat source, and the composite fabric structure was placed 30 cm away from the heat source. The temperature sensor was covered by the composite fabric structure to measure the temperature change on its back side. The results are as follows. Figure 5 As shown, to compare the heating effect, curve A represents a typical polyethylene terephthalate (PET) fabric structure with a transparent film, curve B represents a PET fabric structure with an infrared reflective material and a transparent film, and curve C represents a PET fabric structure with an infrared reflective material and a film containing a moisture-absorbing material. After a 5-minute heating test, the temperature of curve B decreased by 1.6°C compared to curve A, indicating that the infrared reflective material 12 can indeed achieve a cooling effect. Similarly, after a 5-minute test, the temperature of curve C decreased by 3.6°C compared to curve A, indicating that in addition to the infrared reflective material 12, the moisture absorbed by the moisture-absorbing material in the film layer 2 can block infrared penetration, and the high specific heat of water leads to a temperature decrease. Therefore, the results show that the infrared reflective material 12 of the first fabric layer 1 and the moisture-absorbing material of the film layer 2 in this invention can effectively achieve a cooling effect.

[0035] Please refer to Table 1:

[0036] Table 1

[0037]

[0038] Table 1 shows the UV protection coefficient test results of fabrics containing fluorescent substance 11 and those without. Note: Fluorescent substance 11 can be blue or red fluorescent powder. This fluorescent substance 11 can absorb ultraviolet light and then convert it into visible light that is beneficial to the skin, effectively increasing the blocking of ultraviolet light and thus improving the UV shielding effect. Blue fluorescent powder has a higher absorption rate, so its shielding effect is better than that of red fluorescent powder. Table 1 shows that adding this fluorescent substance 11 can increase the absorption of ultraviolet light, thereby improving the UV protection effect.

[0039] In summary, the fluorescent material 11 of the first fabric layer 1 absorbs ultraviolet light and converts it into visible light that is beneficial to the skin, while also providing ultraviolet shielding. The infrared reflective material 12 of the first fabric layer 1 reflects infrared rays from the environment, reducing infrared penetration and achieving a cooling effect. The moisture-absorbing material of the thin film layer 2 absorbs moisture, lowering the fabric temperature and making the body feel cool. The far-infrared material 31 of the second fabric layer 3 absorbs some of the infrared rays and body heat that penetrate the first fabric layer 1, generating far-infrared rays that enter the body, thus improving the functional benefits of the composite fabric structure.

Claims

1. A composite fabric structure with enhanced cooling, characterized by, It comprises: a first fabric layer provided with a fluorescent substance and an infrared reflective substance; a film layer provided with a moisture absorbing substance; and a second fabric layer provided with a far infrared substance, wherein the first fabric layer, the film layer and the second fabric layer are sequentially stacked.

2. The composite fabric structure with coolness enhancement of claim 1, wherein: The fluorescent substance of the first fabric layer is distributed in the yarn of the first fabric layer.

3. The composite fabric structure with coolness enhancement of claim 1, wherein: The infrared reflective substance of the first fabric layer is distributed in the yarn of the first fabric layer.

4. The composite fabric structure with coolness enhancement of claim 1, wherein: The film layer is provided with a plurality of micropores.

5. The composite fabric structure with coolness enhancement of claim 1, wherein: The far infrared substance is in the form of powder distributed in the yarn of the second fabric layer.

6. The composite fabric structure with coolness enhancement of claim 1, wherein: The fluorescent substance of the first fabric layer is an oxide fluorescent powder.

7. The composite fabric structure with coolness enhancement of claim 1, wherein: The infrared reflective substance of the first fabric layer is a powder with a refractive index higher than 2.0 and a surface modification.

8. The composite fabric structure with coolness enhancement of claim 1, wherein: The film layer contains polyvinyl alcohol resin in addition to the moisture absorbing substance, which is silica gel or activated alumina.

9. The composite fabric structure with coolness enhancement of claim 1, wherein: The film layer contains thermoplastic polyolefin in addition to the moisture absorbing substance, which is superabsorbent resin or xyloglucan.

10. The composite fabric structure with coolness enhancement of claim 1, wherein: The far infrared substance of the second fabric layer can be selected from oxides including silicon dioxide, titanium dioxide, aluminum oxide, and zirconium oxide, or the far infrared substance of the second fabric layer is silicon carbide, zirconium carbide, graphene, carbon powder, carbon nanotube, tourmaline, or maifanite.

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