Multi-layer structure far infrared ray enhancement type electromagnetic wave protection cloth

Abstract

The invention provides a multi-layer structure far infrared ray enhancement type electromagnetic wave protection fabric which comprises a base layer, a far infrared ray enhancement layer and a functional inner layer which are mutually combined through at least one mode of lamination, flocking or hot pressing technologies. The base layer comprises a nylon fleece and an electromagnetic wave shielding layer, and the electromagnetic wave shielding layer contains stainless steel fibers and is arranged on the nylon fleece to provide an electromagnetic wave protection effect. The far infrared ray enhancement layer comprises a flocking cotton cloth layer and a far infrared ray polyester fiber layer, the flocking cotton cloth layer contains far infrared ray mineral powder, and the far infrared ray polyester fiber layer contains far infrared ray functional minerals, so that the far infrared ray release efficiency is improved. The functional inner layer comprises a knitted fabric layer and a polar fleece layer, the knitted fabric layer contains far infrared functional ores, and the polar fleece layer is arranged on the knitted fabric layer. The fabric can effectively provide electromagnetic wave shielding and far infrared ray enhancing functions, and is suitable for personal protective clothing, medical health care products and intelligent health clothing.

Description

Technical Field

[0001] The present invention relates to the technical field of textile materials, and particularly to a protective fabric having a multi-layer structure, enhanced far-infrared rays, and capable of shielding electromagnetic waves. Background Art

[0002] In the prior art, electromagnetic wave shielding materials and far-infrared functional fabrics have been respectively applied to different fields. However, most of these technologies only focus on a single function, such as anti-electromagnetic wave interference or the thermal effect of far-infrared rays, lacking a composite fabric that can simultaneously possess the effects of electromagnetic wave protection and far-infrared enhancement. In addition, the existing shielding fabrics often affect breathability and comfort due to the poor use mode of metal fibers, while the far-infrared functional fabrics may affect the effect due to the uneven distribution of far-infrared releasing materials. Therefore, there is still room for technical improvement.

[0003] The existing electromagnetic wave shielding fabrics mainly use metal fibers, conductive coatings, or coating technologies to reduce electromagnetic interference (EMI, Electromagnetic Interference). For example, some technologies weave stainless steel fibers or silver fibers into the fabric to make it conductive, so as to absorb and reflect electromagnetic waves. However, the main problems of such fabrics are as follows: First, the distribution of metal fibers in the fabric is prone to structural changes due to stretching or washing, resulting in a decrease in shielding effect; Second, metal fibers may reduce the softness and comfort of the fabric, restricting the application range. In addition, the technologies using coating or coating methods to increase the shielding effect can improve the conductivity of the fabric, but the coating is prone to peeling off due to long-term use or washing, making the protection effect unable to last. Therefore, the existing electromagnetic wave shielding fabrics on the market still have problems of insufficient durability and comfort.

[0004] On the other hand, far-infrared fabrics mainly enhance the far-infrared releasing ability of the fabric by adding far-infrared functional materials, such as germanium stone, zirconia, or silicate, to textile fibers. These far-infrared materials can absorb the energy in the environment and re-radiate it in the form of far-infrared rays, which helps to promote blood circulation, keep warm, and improve physiological functions. However, most of the far-infrared fabrics in the prior art are manufactured by single-layer or simple blending methods, and the far-infrared functional materials may be affected by the processing method and their uniform distribution is affected, resulting in unstable far-infrared release. In addition, after long-term use or washing, the functional coating of some far-infrared coated fabrics may fall off, resulting in a decrease in the far-infrared release effect. Therefore, the durability and functional stability of the existing far-infrared fabrics still need to be improved.

[0005] Although there are already some fabrics combining electromagnetic wave shielding and far-infrared functions on the market, most of these technologies only laminate or mix the two types of materials, without considering the impact of the bonding method between materials on the fabric performance. For example, some technologies directly bond the electromagnetic wave shielding layer with the far-infrared functional fabric. However, this laminated structure may cause delamination due to fabric bending, friction or washing, resulting in a decline in its functional effect. In addition, some technologies attempt to combine the two functions through double-sided knitting technology, but due to different material selection and processing methods, the breathability and softness of the fabric are limited. Therefore, the existing electromagnetic wave protection and far-infrared fabrics still have technical bottlenecks and have not been able to simultaneously possess high performance, comfort and durability.

[0006] Based on the above technical problems, the present invention proposes a multi-layer structure far-infrared enhanced electromagnetic wave protection fabric, which ensures the bonding strength between each functional layer through lamination, flocking or hot pressing technology, so that the fabric can still maintain stable electromagnetic wave shielding performance and far-infrared release effect after long-term use and washing. In addition, the fabric adopts a specific composite layer design to ensure breathability and wearing comfort, enabling it to be applied in the fields of personal protection, healthcare and intelligent health clothing, and solving many problems of the existing technology. Summary of the Invention

[0007] Therefore, the object of the present invention is to provide a multi-layer structure far-infrared enhanced electromagnetic wave protection fabric, which includes a base layer, a far-infrared enhancement layer and a functional inner layer, and is combined with each other through at least one of lamination, flocking or hot pressing technology. The base layer includes a nylon fleece fabric and an electromagnetic wave shielding layer, and the electromagnetic wave shielding layer is set on the nylon fleece fabric and contains stainless steel fibers to provide electromagnetic wave shielding function. The far-infrared enhancement layer includes a flocked cotton fabric layer and a far-infrared polyester fiber layer, the flocked cotton fabric layer is set on the far-infrared polyester fiber layer, the flocked cotton fabric layer contains far-infrared ore powder, and the far-infrared polyester fiber layer contains far-infrared functional minerals to enhance the far-infrared release performance. The functional inner layer includes a knitted fabric layer and a polar fleece fabric layer, the knitted fabric layer contains far-infrared functional ore, and the polar fleece fabric layer is set on the knitted fabric layer to enhance the wearing comfort and functional stability of the fabric.

[0008] Among them, the nylon fleece fabric is made of a blend of polyamide and polyurethane, so that the base layer has good elasticity and wear resistance, and improves the durability and adaptability of the fabric.

[0009] Among them, the electromagnetic wave shielding layer is a conductive textile layer containing stainless steel fibers, and the content of the stainless steel fibers is 5% to 40% of the total weight of the fabric, ensuring that the electromagnetic wave shielding layer can maintain stable electromagnetic wave shielding performance and provide good anti-interference performance.

[0010] Among them, the far-infrared ore powder contained in the flocked cotton cloth layer is selected from germanite, zircon, silicate, igneous rock or a combination thereof, and has a far-infrared emissivity of more than 80%, so as to enhance the far-infrared release effect of the cloth and promote the physiological comfort of the user.

[0011] Among them, the fibers of the far-infrared polyester fiber layer contain far-infrared functional ceramic powder, and the particle size range of the ceramic powder is 0.1μm to 10μm, so as to ensure the stable release of far-infrared rays and improve the absorption efficiency of far-infrared rays.

[0012] Among them, the knitting structure of the knitted cloth layer is a double-sided knitting structure, and it contains compound far-infrared ore powder, so as to enhance the durability and breathability of the functional inner layer, and make the cloth have both functionality and comfort.

[0013] Among them, the thickness of the polar fleece cloth layer is between 0.3mm and 1.5mm, so as to ensure the warmth retention effect of the cloth, and while providing appropriate comfort, maintain a good soft touch.

[0014] Among them, the flocked cotton cloth layer and the far-infrared polyester fiber layer of the far-infrared enhancement layer are fixed through at least one of the methods of polymer gluing technology, melt bonding technology or needle punching processing technology, so as to improve the structural stability and service durability of the far-infrared enhancement layer.

[0015] Among them, the cloth is applicable to personal protective clothing, electromagnetic shielding clothing, healthcare products or intelligent health clothing, so as to ensure that the cloth can play its functionality in different application fields and enhance the market competitiveness.

[0016] Among them, the cloth can be further coated with an antibacterial coating, and the antibacterial coating contains nano silver, zinc oxide or a combination thereof, so as to provide additional antibacterial and odor prevention functions and enhance the hygienic properties and long-term use safety of the cloth. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of a multi-layer structure far-infrared enhanced electromagnetic wave protection cloth proposed by the present invention. Detailed Embodiments

[0018] In order to make the purpose, technical solutions and advantages of the disclosure of the present invention clearer and more understandable, the following further details the disclosure in combination with specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should have the ordinary meanings understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar words used in one or more embodiments of this specification do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the components or objects appearing before this word cover the components or objects listed after this word and their equivalents, without excluding other components or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0020] Refer to Figure 1 , a multi-layer structure far-infrared enhanced electromagnetic wave protection fabric 10 proposed by the present invention, which is characterized in that it is composed of a base layer 11, a far-infrared enhancement layer 12 and a functional inner layer 13.

[0021] The base layer 11 includes a nylon fleece fabric 111 and an electromagnetic wave shielding layer 112. The electromagnetic wave shielding layer 112 is disposed on the nylon fleece fabric 111. The electromagnetic wave shielding layer 112 contains stainless steel fibers. Among them, the nylon fleece fabric 111 can be at least composed of a blend of polyamide and polyurethane. In one embodiment, the nylon fleece fabric 111 is composed of a blend of 50% to 90% content of polyamide and 10% to 50% content of polyurethane, and it can be woven by warp knitting, weft knitting or brushing treatment technology.

[0022] A far-infrared enhancement layer 12 is disposed on the base layer 11. The far-infrared enhancement layer 12 includes a flocked cotton fabric layer 121 and a far-infrared polyester fiber layer 122. The flocked cotton fabric layer 121 is disposed on the far-infrared polyester fiber layer 122. The flocked cotton fabric layer 121 contains far-infrared ore powder. The far-infrared polyester fiber layer 122 contains far-infrared functional minerals. Among them, the far-infrared functional minerals are fixed inside the fibers by melt spinning or polymer gluing technology to improve the washability and functional stability of the far-infrared polyester fiber layer 122. And the flocked cotton fabric layer 121 makes the far-infrared ore powder evenly distributed on the fabric surface through electrostatic flocking technology, and is subjected to heat treatment or high-pressure penetration processing to improve the adhesion and far-infrared release efficiency of the far-infrared ore powder.

[0023] A functional inner layer 13 is disposed on the far-infrared enhancement layer 12. The functional inner layer 13 includes a knitted fabric layer 131 and a polar fleece layer 132. The knitted fabric layer 131 contains far-infrared functional ore. The polar fleece layer 132 is disposed on the knitted fabric layer 131. Among them, the knitted fabric layer 131 contains far-infrared functional ore. The far-infrared functional ore is selected from germanium stone, zircon, silicate, igneous rock or a combination thereof, and its particle size range is preferably between 0.1 μm and 10 μm. In addition, the far-infrared functional ore is uniformly dispersed in the fibers of the knitted fabric layer 131 in the form of nano-scale powder and fixed on the fiber surface through melt spinning or coating technology to improve the washability and functional stability of the knitted fabric layer 131.

[0024] The knitting structure of the knitted fabric layer 131 can be a double-sided knitting structure, and a porous breathable structure is formed through high-density knitting technology to improve the durability and breathability of the functional inner layer 13. The polar fleece layer 132 is disposed on the knitted fabric layer 131 and fixed by at least one of lamination, melt bonding or needle punching processing technology to ensure the structural stability and durability of the functional inner layer 13.

[0025] Among them, the base layer 11, the far-infrared enhancement layer 12 and the functional inner layer 13 are combined with each other by at least one of lamination, flocking or hot pressing technology. And the lamination technology includes high-temperature high-pressure lamination, cold pressing lamination or hot melt lamination. The flocking technology includes electrostatic flocking or wet flocking. The hot pressing technology includes hot melt adhesive lamination or ultrasonic hot pressing. The lamination technology is applicable to the pressing of multi-layer composite materials. The flocking technology is applicable to the uniform attachment of functional particles. The hot pressing technology is applicable to the fixation of heat-melting fibers, making the structures of the base layer 11, the far-infrared enhancement layer 12 and the functional inner layer 13 stable, and selecting the applicable combination method according to the compatibility of different materials. Among them, the lamination technology is applicable to the combination of polymer substrates. The flocking technology is applicable to the fixation of far-infrared powder. The hot pressing technology is applicable to the composite of high-melting-point and low-melting-point fibers. The fabric can still maintain the interlayer bonding strength after being washed more than 100 times and keep the electromagnetic wave shielding efficiency and far-infrared releasing ability.

[0026] Among them, the aforementioned nylon fleece cloth 111 is made of a blend of polyamide and polyurethane, mainly providing the elasticity and wear resistance of the base layer 11.

[0027] A multilayer far-infrared enhanced electromagnetic wave shielding fabric 10, wherein the electromagnetic wave shielding layer 112 is a conductive textile layer containing stainless steel fibers, the content of the stainless steel fibers is 5% to 40% of the total weight of the fabric, the diameter range of the stainless steel fibers is 1μm to 40μm, and it is selected from 316L or 304 stainless steel alloys. The stainless steel fibers are arranged in the conductive textile layer by plain weaving, twill weaving or shuttle weaving techniques to ensure the uniformity and shielding efficiency of the electromagnetic wave shielding layer 112. The electromagnetic wave shielding efficiency of the electromagnetic wave shielding layer 112 in the frequency range of 1MHz to 10GHz reaches 20dB to 60dB, and after more than 100 washes, the attenuation rate of its electromagnetic wave shielding efficiency does not exceed 10%, supplemented in the implementation manner: to ensure that the electromagnetic wave shielding layer 112 has a stable electromagnetic wave shielding efficiency.

[0028] Among them, the far-infrared ore powder contained in the flocked cotton cloth layer 121 is selected from germanium stone, zircon, silicate, igneous rock or a combination thereof, the particle size range of the far-infrared ore powder is 0.1μm to 10μm, and it is evenly distributed on the surface of the flocked cotton cloth layer 121 and fixed inside the fabric through electrostatic flocking technology or high-pressure penetration technology to improve the stability of far-infrared radiation. After more than 100 washes, the far-infrared emissivity of the far-infrared ore powder remains above 80%, and the far-infrared emissivity is obtained according to the JISL1951 or ASTMC1371 standard test.

[0029] Among them, the fibers of the far-infrared polyester fiber layer 122 contain far-infrared functional ceramic powder, and the particle size range of the ceramic powder is 0.1μm to 10μm to improve the far-infrared release efficiency.

[0030] Among them, the knitting structure of the knitted fabric layer 131 is a double-sided knitting structure and contains compound far-infrared ore powder to improve the durability and breathability of the functional inner layer 13.

[0031] Among them, the thickness of the polar fleece layer 132 is between 0.3mm and 1.5mm to provide appropriate warmth and comfort. The polar fleece layer 132 is made of at least 80% polyester fiber or blended far-infrared functional fiber and is manufactured through double-sided brushing or high-density weft knitting technology to improve the warmth and softness of the layer. The fluff structure of the polar fleece layer 132 is treated by electrostatic flocking to form a porous air layer to enhance the heat insulation effect and maintain appropriate breathability.

[0032] Among them, between the flocked cotton cloth layer 121 and the far-infrared polyester fiber layer 122 of the far-infrared enhancement layer 12 is fixed through at least one of polymer gluing technology, melt bonding technology or needle punching processing technology to improve the structural stability and service durability of the far-infrared enhancement layer 12.

[0033] Among them, the fabric 10 is applicable to personal protective clothing, electromagnetic shielding clothing, healthcare products or intelligent health clothing. Specifically, the fabric 10 can be applied to personal protective clothing, including protective clothing for workers in electromagnetic wave environments, electromagnetic protective clothing for pregnant women, and protective clothing for those who use electronic devices for a long time; it can also be applied to electromagnetic shielding clothing, such as electromagnetic wave protective clothing for special operators, invisible reconnaissance work clothing, and anti-detection protective clothing for military or intelligence personnel. In addition, the fabric 10 can be applied to healthcare products, including far-infrared protectors that can assist in improving blood circulation (such as lumbar protectors, knee protectors, and wrist protectors), far-infrared physiotherapy blankets for long-term bedridden patients, and antibacterial electromagnetic protective clothing for patients. On the other hand, the fabric 10 can be applied to intelligent health clothing, such as sports clothing with built-in electromagnetic protection and far-infrared blood circulation promotion functions, home health monitoring clothing, far-infrared intelligent sleep clothing with electromagnetic shielding functions, or health sensing underwear.

[0034] Among them, the fabric 10 can be further coated with an antibacterial coating, which contains nano silver, zinc oxide or a combination thereof. The particle size range of the nano silver is 1nm to 100nm, and the particle size range of the zinc oxide is 10nm to 500nm. The antibacterial coating can be applied to the surface or internal fiber structure of the fabric 10 through dip coating, spray coating or sol-gel technology. The antibacterial coating has been tested by ISO22196 or ASTME2149, and its antibacterial rate reaches more than 99%. Moreover, after being washed more than 50 times, its antibacterial rate remains above 95%.

[0035] However, the above are only embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. All simple equivalent changes and modifications made according to the claims of the present invention application and the content of the patent specification still fall within the scope covered by the present invention patent.

[0036] Symbol Explanation

[0037] Fabric 10

[0038] Base layer 11

[0039] Nylon fleece 111

[0040] Electromagnetic wave shielding layer 112

[0041] Far-infrared enhancement layer 12

[0042] Flocked cotton fabric layer 121

[0043] Far-infrared polyester fiber layer 122

[0044] Functional inner layer 13

[0045] Knitted fabric layer 131

[0046] Polar fleece fabric layer 132

Claims

1. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10), characterized in that: include: A base layer (11), the base layer (11) comprising: a nylon raised cloth (111) and an electromagnetic wave shielding layer (112), the electromagnetic wave shielding layer (112) being set on the nylon raised cloth (111), and the electromagnetic wave shielding layer (112) containing stainless steel fibers; a far-infrared enhancement layer (12), the far-infrared enhancement layer (12) being set on the base layer (11), the far-infrared enhancement layer (12) comprising: a flocked cotton cloth layer (121) and a far-infrared polyester fiber layer (122), the flocked cotton cloth layer (121) being set on the far-infrared polyester fiber layer (122), the flocked cotton cloth layer (121) containing far-infrared mineral powder, and the far-infrared polyester fiber layer (122) containing far-infrared functional minerals; a functional inner layer (13), the functional inner layer (13) being disposed on the far-infrared enhancement layer (12), the functional inner layer (13) comprising a knitted fabric layer (131) and a polar fleece fabric layer (132), the knitted fabric layer (131) containing far-infrared functional minerals, the polar fleece fabric layer (132) being disposed on the knitted fabric layer (131); The base layer (11), the far infrared enhancement layer (12) and the functional inner layer (13) are combined with each other through at least one of lamination, flocking or heat pressing technology.

2. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10) according to claim 1, wherein the nylon raised fabric (111) is a blend of polyamide (Nylon) and polyurethane (Spandex).

3. A multi-layered far-infrared enhanced electromagnetic wave protection fabric (10) according to claim 1, wherein the electromagnetic wave shielding layer (112) is a conductive textile layer containing stainless steel fibers, and the content of the stainless steel fibers is 5% to 40% of the total weight of the fabric.

4. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10) according to claim 1, wherein the far-infrared mineral powder contained in the flocked cotton fabric layer (121) is selected from germanium, zircon, silicate, igneous rock or a combination thereof, and has a far-infrared emissivity of more than 80%.

5. A multi-layered far-infrared enhanced electromagnetic wave shielding fabric (10) according to claim 1, wherein the fibers of the far-infrared polyester fiber layer (122) contain far-infrared functional ceramic powder, and the particle size range of the ceramic powder is 0.1μm to 10μm, so as to improve the far-infrared release efficiency.

6. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10) according to claim 1, wherein the knitted fabric layer (131) has a double-sided knitted structure and contains compound far-infrared mineral powder.

7. A multi-layer structured far-infrared enhanced electromagnetic wave shielding fabric (10) according to claim 1, wherein the thickness of the polar fleece fabric layer (132) is between 0.3 mm and 1.5 mm.

8. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10) according to claim 1, wherein the flocked cotton cloth layer (121) of the far-infrared enhanced layer (12) and the far-infrared polyester fiber layer (122) are fixed by at least one of polymer bonding technology, melt bonding technology or needle punching technology.

9. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10) according to claim 1, wherein the fabric (10) is suitable for personal protective clothing, electromagnetic shielding clothing, medical care products or smart health clothing.

10. A multi-layered far-infrared enhanced electromagnetic wave protective fabric (10) according to claim 1, wherein the fabric (10) can be further added with an antibacterial coating, and the antibacterial coating comprises nanosilver, zinc oxide or a combination thereof.

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