Multifunctional underwear fabric

Abstract

The multifunctional underwear fabric comprises a skin-friendly layer, a breathable buffer layer, a middle warm-keeping layer and an outer layer, the skin-friendly layer is a blended layer, the blended layer is formed by weaving cotton fibers and bamboo fibers, and an antistatic agent film layer is arranged on the surface of the cotton fibers; uniformly distributed air holes are formed in the surface of the air-permeable buffer layer; the middle warm-keeping layer is of an interwoven structure, and the outer layer is formed by weaving antistatic polyester fibers and nano-silver coating polyester fibers. Compared with the prior art, the multifunctional underwear fabric has the advantages that the problem of static electricity in winter can be solved, the air permeability and the sweat absorption rate of the underwear fabric are optimized, and the comfort, the dryness and the practicability in the wearing process in winter are greatly enhanced; the problems that in the prior art, thermal underwear is single in function and poor in comprehensive experience are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of underwear fabric technology, specifically a multifunctional underwear fabric. Background Technology

[0002] In winter, thermal underwear, as a core item of daily clothing for warmth, is increasingly widely used. The core function of this type of clothing is to reduce the conduction and loss of body heat to the external environment through fabric structure design and material selection, maintaining a comfortable body temperature. Current thermal underwear typically uses synthetic and natural fibers with low thermal conductivity and excellent heat retention as the base material, such as polyester and wool. Through the fiber's own loose structure or air-trapping ability, it effectively locks in body heat, reducing the rate of heat loss and thus achieving an ideal warmth retention effect.

[0003] However, existing thermal underwear is not only functionally limited, but also prone to static electricity buildup due to charge transfer caused by friction from body movement during wear. This static electricity can cause shocks and discomfort when the wearer comes into contact with metal objects or other conductors, and the static attraction effect makes the surface of the clothing easily attract dust, hair, and other impurities, reducing comfort and appearance, and severely impacting the user experience.

[0004] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a multifunctional underwear fabric. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multifunctional underwear fabric to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a multifunctional underwear fabric, including a skin-friendly layer (1), a breathable cushioning layer (2), a middle insulating layer (3), and an outer layer (4). The skin-friendly layer (1) is a blended layer, which is woven from cotton fibers (11) and bamboo fibers (12). The surface of the cotton fibers (11) is provided with an antistatic agent film layer (111), and the surface of the bamboo fibers (12) is provided with micropores (121). The micropores (121) on the bamboo fibers (12) are embedded with activated carbon particles (122). The surface of the breathable cushioning layer (2) is provided with uniformly distributed breathable holes. The middle insulating layer (3) is an interwoven structure, which is knitted from modal fibers and polyester fibers (21). The polyester fibers (21) have cavities inside, and the surface of the polyester fibers (21) is covered with a graphene layer (22). The outer layer (4) is woven from antistatic polyester fibers and nano-silver coated polyester fibers.

[0007] In one or more embodiments of this utility model, the antistatic agent film is made of a mixture of polyethylene glycol, quaternary ammonium salt surfactant, glycerol and nano silica.

[0008] In one or more embodiments of this utility model, the ratio of cotton fiber to bamboo fiber in the skin-friendly layer is 4:6, the diameter of the cotton fiber is 12μm-18μm, the diameter of the bamboo fiber is 10μm-15μm, and the thickness of the antistatic agent film layer is 0.5μm-1.5μm.

[0009] In one or more embodiments of this utility model, the surface of the modal fiber has a napped structure, and the ratio of the polyester fiber to the modal fiber is 3:7.

[0010] In one or more embodiments of this utility model, the polyester fibers and modal fibers are distributed in a Y-shape.

[0011] In one or more embodiments of this utility model, the breathable buffer layer (2) is a polylactic acid fiber nonwoven fabric with a thickness of 0.1mm-0.2mm, the pore size of the breathable buffer layer is 3μm-8μm, and the pore density is 80 / cm². 2 -120 / cm 2 .

[0012] In one or more embodiments of this utility model, the ratio of antistatic polyester fiber to nano-silver coating polyester fiber in the outer layer is 4:6, and the thickness of the nano-silver coating is 5nm-15nm.

[0013] In one or more embodiments of this utility model, the skin-friendly layer and the breathable cushioning layer are connected by a hydroentanglement composite method, the breathable cushioning layer and the intermediate thermal insulation layer are connected by a hot melt adhesive composite method, the hot melt adhesive is applied in a dot-matrix coating form, and the intermediate thermal insulation layer and the outer layer are connected by a needle-punching composite method.

[0014] Compared with existing technologies, the multifunctional underwear fabric of this invention not only solves the problem of static electricity in winter, but also optimizes the breathability and sweat absorption rate of the underwear fabric, greatly enhancing the comfort, dryness and practicality during winter wear, and effectively solving the problem of single function and poor overall experience of thermal underwear in existing technologies. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a multifunctional underwear fabric in one embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of cotton fibers in a multifunctional underwear fabric according to one embodiment of the present invention.

[0018] Figure 3 This is a cross-sectional view of bamboo fiber in a multifunctional underwear fabric according to one embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional view of polyester fibers in a multifunctional underwear fabric according to one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Skin-friendly layer; 11. Cotton fiber; 111. Antistatic agent film layer; 12. Bamboo fiber; 121. Micropores; 122. Activated carbon microparticles; 2. Breathable cushioning layer; 21. Polyester fiber; 22. Graphene layer; 3. Middle insulation layer; 4. Outer layer. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0023] Example 1

[0024] like Figures 1 to 4 As shown, a multifunctional underwear fabric in one embodiment of this utility model adopts a four-layer composite structure design, consisting of a skin-friendly layer 1, a breathable cushioning layer 2, a middle warming layer 3, and an outer layer 4 from the inside out. Each layer is tightly connected through a specific composite process to achieve multifunctional integration such as skin-friendliness, antistatic properties, breathability, warmth, and antibacterial properties.

[0025] The skin-friendly layer 1 is a blended woven layer of cotton fiber 11 and bamboo fiber 12, wherein the ratio of cotton fiber 11 to bamboo fiber 12 is 4:6.

[0026] Specifically, cotton fiber 11 uses natural cotton fiber with a diameter of 12μm as the base material. After plasma surface treatment, an antistatic agent film 111 is formed on its surface through impregnation and drying processes. The antistatic agent film 111 is made by mixing polyethylene glycol, quaternary ammonium salt surfactant, glycerin, and nano silica in a mass ratio of 3:2:1:0.5, and the film thickness is 0.5μm. This film reduces the surface resistivity of the fiber through the conductivity of the quaternary ammonium salt surfactant, and the polyethylene glycol and glycerin form a moisture-absorbing and moisturizing network. Combined with the dispersion stability of nano silica, it achieves a dual effect of long-lasting antistatic and skin-friendly moisturizing.

[0027] Bamboo fiber 12 is made of bamboo fiber with a diameter of 10μm. Micropores 121 are formed on the fiber surface through an etching process. Activated carbon microparticles 122 are embedded in the micropores 121. The activated carbon microparticles 122 remove odor molecules produced by sweat metabolism through physical adsorption, while the micropores 121 increase the specific surface area of ​​the fiber, improving its sweat absorption and breathability, while retaining the natural antibacterial properties of bamboo fiber itself.

[0028] Cotton fiber 11 and bamboo fiber 12 are interwoven in a plain weave to ensure that the skin-friendly layer 1 is soft and fits the skin, while leaving small gaps to facilitate the conduction of sweat.

[0029] The breathable buffer layer 2 is made of polylactic acid fiber nonwoven fabric, using short polylactic acid fibers with a diameter of 8μm, manufactured through carding, web laying, and hydroentangling reinforcement processes. The nonwoven fabric thickness is 0.1mm. During the hydroentangling process, uniformly distributed air pores are formed by pressing with a template. The pore size is 3μm, and the distribution density is 80 pores / cm². 2 Polylactic acid fiber itself has good biocompatibility and breathability. Combined with a breathable pore design with specific pore size and density, it can quickly conduct sweat that has penetrated the skin-friendly layer 1, and form an air buffer layer through the loose structure of the fiber, reducing the direct contact of cold air from the outside with the middle insulation layer 3, thus improving the stability of warmth retention.

[0030] The middle insulating layer 3 is a knitted interweaving structure of modal fiber and polyester fiber 21, with a ratio of 7:3. During weaving, a Y-shaped interweaving method is used to create a three-dimensional, fluffy structure. The surface of the modal fiber is mechanically napped to form a 0.5mm long pile structure. Tiny air cavities are formed between the pile, enhancing heat retention. Simultaneously, the high moisture absorption of modal fiber quickly absorbs sweat conducted by the breathable cushioning layer, preventing moisture buildup.

[0031] Polyester fiber 21 is made of polyester filament with a hollow cavity inside, the cavity diameter being 1 / 3 of the fiber diameter. Its surface is covered with a graphene layer 22 with a thickness of 5nm through a chemical deposition process. The hollow cavity can trap stagnant air and reduce heat conduction efficiency; the graphene layer 22 has excellent heat conduction properties, which can make the heat on the human body surface evenly distributed, avoiding local overheating or overcooling, while enhancing the mechanical strength of the fiber.

[0032] The outer layer 4 is a woven layer of antistatic polyester fiber and nano-silver coated polyester fiber, with a ratio of 4:6. The antistatic polyester fiber is made of polyester fiber with added permanent antistatic masterbatch, through a blending spinning process to ensure that the outer layer 4 has basic antistatic properties.

[0033] The nano-silver coated polyester fiber uses 15μm diameter polyester fiber as the base material, and a 5nm thick nano-silver coating is formed on its surface using a vacuum sputtering process. The nano-silver particles achieve a broad-spectrum antibacterial effect by disrupting the bacterial cell membrane structure, with an antibacterial rate of ≥99% against Escherichia coli and Staphylococcus aureus. Both fibers are woven in a twill weave to form a dense structure, which not only blocks the intrusion of cold air from the outside, but also forms a dual antistatic system through the antistatic polyester fiber and the antistatic agent film layer 111 of the skin-friendly layer 1, completely solving the problem of static electricity accumulation.

[0034] The skin-friendly layer 1 and the breathable cushioning layer 2 are bonded together using a hydroentangling process. High-pressure water jets embed some fibers from the skin-friendly layer 1 into the fiber network of the breathable cushioning layer 2, achieving adhesive-free bonding and maintaining the softness and breathability of the laminated fabric. The breathable cushioning layer 2 and the intermediate insulating layer 3 are bonded together using a hot-melt adhesive process. Low-melting-point polyamide hot-melt adhesive is applied to the surface of the breathable cushioning layer 2 in a dotted pattern, with adhesive dots of 0.3mm in diameter and 1mm spacing, ensuring composite strength while preventing the adhesive layer from clogging the breathable pores. The intermediate insulating layer 3 and the outer layer 4 are bonded together using a needle-punching process. Steel needles from a needle-punching machine insert some fibers from the outer layer 4 into the fluffy structure of the intermediate insulating layer 3, forming mechanical entanglement, enhancing interlayer bonding, and preserving the fluffiness of the intermediate insulating layer 3.

[0035] Example 2

[0036] Unlike Example 1, this example precisely optimizes the fabric's structural process and functional parameters. By adjusting the core weaving method and key structural dimensions, the overall performance and user experience of the fabric are further improved. Specifically, the skin-friendly layer 1 abandons the plain weave method of Example 1 and adopts a twill weave process for interweaving. Twill weave changes the interlacing angle of the warp and weft fibers to about 45°, creating longer floats and a tighter cohesion between the fibers. Compared to the vertical interlacing structure of plain weave, twill weave effectively disperses the friction on the fabric surface, reducing local fiber shedding and pilling caused by friction, thereby significantly improving the abrasion resistance of the skin-friendly layer 1. Tests show that its abrasion resistance is more than 40% higher than that of Example 1. At the same time, while enhancing abrasion resistance, the twill weave still maintains the soft and comfortable properties required for the skin-friendly layer 1. The natural diagonal weave formed on the fabric surface not only enhances the texture of the fabric, but also leaves more reasonable fiber gaps to ensure that the sweat absorption and breathability functions are not affected, and avoids sacrificing skin-friendly comfort in pursuit of abrasion resistance.

[0037] In the structural design of the intermediate insulation layer 3, this embodiment optimizes and upgrades the surface treatment and interweaving structure parameters of the modal fibers. Specifically, the nap length of the modal fiber surface is increased from 0.5mm in Example 1 to 0.8mm. The longer nap structure forms a thicker nap layer on the fiber surface, which further expands the trapping space for still air, reducing heat loss through convection. Simultaneously, the extended nap enhances the cushioning effect between the fabric and the skin, improving the soft feel when worn. Furthermore, the Y-shaped interweaving structure of modal fibers and polyester fibers 21 in the intermediate insulation layer 3 has its loft height increased from 1.0mm in Example 1 to 1.2mm. This increased loft height makes the three-dimensional network structure formed by the Y-shaped interweaving more supportive and elastic, effectively preventing the insulation layer from compacting and collapsing during wear or washing, ensuring that it maintains good loft even after long-term use. This structural optimization increases the air trapping capacity of the intermediate insulation layer 3 by 25% compared to Example 1, further enhancing the fabric's warmth retention performance. At the same time, the uniform thermal conductivity of polyester fiber 21 works synergistically with the optimized fluffy structure to achieve a more efficient and uniform distribution of body surface temperature, avoiding discomfort from localized overheating or overcooling.

[0038] Regarding the weaving process of the outer layer 4, this embodiment replaces the twill weave of Embodiment 1 with a satin weave. Satin weave, through its one-up-three-down or one-up-four-down warp and weft interlacing pattern, creates continuous floating threads on the fabric surface. Compared to twill weave, satin weave results in a smoother, flatter fabric surface with a more tightly and orderly fiber arrangement. This effectively reduces the phenomenon of fibers standing up and tangling due to friction, forming pills and significantly improving the anti-pilling performance of the outer layer 4. Simultaneously, the smooth surface of satin weave enhances the appearance and texture of the outer layer 4, giving the fabric a soft luster and improving the roughness and wrinkling issues of traditional thermal underwear outer layers 4. This allows the product to not only possess practical functionality but also better meet consumers' demands for a clean and aesthetically pleasing appearance. Furthermore, the tight structure of satin weave does not affect the breathability of the outer layer 4; its reasonable fiber spacing still allows for rapid sweat wicking in conjunction with the breathable cushioning layer 2, ensuring that the fabric's breathability and moisture-wicking function remain unaffected.

[0039] Compared with existing technologies, this utility model provides a multifunctional underwear fabric that solves the problems of static electricity accumulation and electric shock in winter through a dual design of a skin-friendly layer 1, an antistatic agent film layer 111, and an outer layer of antistatic polyester fiber 4. The Y-shaped fluffy structure of the middle insulating layer 3, the hollow cavity of the polyester fiber 21, and the graphene layer 22 work synergistically to improve the warmth retention performance of ordinary thermal underwear fabrics by more than 15%. The activated carbon particles 122 of the bamboo fiber 12 and the breathable pore design of the breathable cushioning layer 2 improve the fabric's breathability and sweat absorption rate, effectively keeping the skin dry.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A multi-functional underwear fabric, characterized by, Include: Skin-friendly layer (1), the skin-friendly layer (1) is a blended layer, which is knitted by cotton fibers (11) and bamboo fibers (12), the surface of the cotton fibers (11) is provided with an antistatic agent film layer (111), the surface of the bamboo fibers (12) is provided with micropores (121), and the micropores (121) on the bamboo fibers (12) are embedded with activated carbon particles (122); The air-permeable buffer layer (2) is provided with uniformly distributed air-permeable holes on the surface; The intermediate warm layer (3) is an interwoven structure, which is knitted by modal fibers and polyester fibers (21), the polyester fibers (21) have cavities inside, and the surface of the polyester fibers (21) is covered with a graphene layer (22); The outer layer (4) is knitted by antistatic polyester fibers and nano-silver plated polyester fibers.

2. A multi-functional underwear fabric according to claim 1, characterized in that, The number ratio of the cotton fibers (11) to the bamboo fibers (12) in the skin-friendly layer (1) is 4:6, the diameter of the cotton fibers (11) is 12-18 μm, the diameter of the bamboo fibers (12) is 10-15 μm, and the thickness of the antistatic agent film layer (111) is 0.5-1.5 μm.

3. The multi-functional underwear fabric according to claim 1, wherein The modal fibers have a rough structure on the surface, and the number ratio of the polyester fibers (21) to the modal fibers is 3:

7.

4. A multi-functional underwear fabric according to claim 3, characterized in that, The polyester fibers (21) and the modal fibers are distributed in Y shape.

5. The multi-functional underwear fabric according to claim 1, wherein The air-permeable cushion layer (2) is a polylactic acid fiber non-woven fabric, the thickness of the polylactic acid fiber non-woven fabric is 0.1mm-0.2mm, the air-permeable hole on the air-permeable cushion layer has a hole diameter of 3μm-8μm, and the distribution density of the air-permeable hole is 80 / cm 2 -120 / cm 2 .

6. The multi-functional underwear fabric according to claim 1, wherein The number ratio of the antistatic polyester fibers to the nano-silver plated polyester fibers in the outer layer (4) is 4:6, and the thickness of the nano-silver plating layer is 5-15 nm.

7. The multi-functional underwear fabric according to claim 1, wherein The skin-friendly layer (1) and the air-permeable buffer layer (2) are connected by a hydroentangled composite method, the air-permeable buffer layer (2) and the intermediate warm layer (3) are connected by a hot melt adhesive composite method, the hot melt adhesive is in a dot-shaped coating form, and the intermediate warm layer (3) and the outer layer (4) are connected by a needle punching composite method.

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