Composite fiber containing nano natural tea fiber and preparation method and application thereof

Abstract

This invention belongs to the field of fiber material technology, and relates to a composite fiber containing nano-natural tea fiber, its preparation method, and its application. The raw materials for preparing the composite fiber include nano-natural tea fiber and basic fiber pulp, wherein the nano-natural tea fiber is a yerba mate nanofiber microemulsion. This invention integrates nanotechnology into the preparation of natural tea fiber. The microemulsion method allows for the simultaneous and uniform dispersion of multiple effective components from tea leaves in the yerba mate nanofiber microemulsion, effectively showcasing the multifunctionality of the fabric. The microemulsion system exhibits high uniformity and long-term stability, eliminating the need for additional surfactants during spinning to achieve high dispersion of the nano-tea fiber in the spinning solution, ensuring the long-lasting effectiveness of the resulting functional fabric. Furthermore, yerba mate contains abundant tea polyphenols and unique yerba mate alkaloids, which further enhance the overall performance of the composite fiber.

Description

[0001] This application is a divisional application of the invention patent application filed on February 5, 2025, with application number 2025101297403 and titled "A composite fiber containing nano-natural tea fiber and its preparation method and application". Technical Field

[0002] This invention belongs to the field of fiber materials technology, and relates to a composite fiber containing nano-natural tea fiber, its preparation method and application. Background Technology

[0003] Natural tea fiber is a novel functional textile material made by extracting the effective components of tea leaves through a specific process and uniformly dispersing them into textile fibers. The development of tea fiber fabrics can be traced back to the growing demand for healthy, environmentally friendly, and functional textiles. With the improvement of living standards, people are paying more and more attention to health and quality of life. While traditional textiles perform well in terms of comfort and aesthetics, they are insufficient in terms of health functions such as antibacterial, deodorizing, and antioxidant properties. Tea fiber fabrics have received widespread market attention due to their natural antibacterial, deodorizing, and antioxidant properties. At the same time, environmental protection has become a global issue. Traditional textile production processes use large amounts of chemical dyes and auxiliaries, causing serious environmental pollution. Tea fiber fabrics do not require the use of chemical dyes during preparation, are naturally beige-brown, avoid environmental pollution, and conform to the concept of sustainable development.

[0004] Tea fiber fabrics have been widely used in various fields due to their unique functionality and environmental friendliness. In the underwear and sportswear sector, tea fiber fabrics possess excellent antibacterial, deodorizing, and moisture-wicking properties, making them suitable for producing comfortable wear. In bedding and home furnishings, the antibacterial, anti-mite, and antioxidant properties of tea fiber fabrics make them suitable for production, improving sleep quality and overall quality of life. In the medical and nursing care sector, the antibacterial, deodorizing, moisturizing, and antioxidant properties of tea fiber fabrics make them suitable for producing medical and nursing care products such as bandages and dressings, providing better care. Furthermore, continuous innovation in tea fiber fabric manufacturing technology allows for the production of multifunctional tea fiber fabrics, such as those with antibacterial, deodorizing, moisturizing, and antioxidant properties. To regulate the production and market of tea fiber fabrics, relevant standardization organizations and certification bodies have established a series of standards and certification systems to ensure product quality and safety. For example, international standards and certification systems such as ISO and OEKO-TEX provide strong support for the production and application of tea fiber fabrics.

[0005] Despite the excellent performance of tea fiber fabrics in terms of functionality and environmental friendliness, some challenges and problems still exist in practical applications. Ensuring the long-term effectiveness of the functionality of tea fiber fabrics requires uniformly dispersing the active ingredients in tea leaves into the fibers, ensuring their stability and durability within the fabric – a key technical challenge. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention provides a composite fiber containing nano-natural tea fiber, its preparation method, and its application.

[0007] One objective of this invention is achieved through the following technical solution:

[0008] A composite fiber containing nano-natural tea fiber, wherein the raw materials for preparing the composite fiber include nano-natural tea fiber and basic fiber pulp, and the nano-natural tea fiber is yerba mate nanofiber microemulsion.

[0009] Preferably, the preparation method of the yerba mate nanofiber microemulsion includes the following steps:

[0010] (1) Extract the effective components from yerba mate tea leaves to obtain yerba mate nanofiber liquid;

[0011] (2) Add surfactant and co-surfactant to oil phase and stir to obtain preemulsion, then add yerba mate nanofiber liquid to preemulsion and continue stirring to disperse it evenly to obtain yerba mate nanofiber emulsion.

[0012] (3) Add the yerba mate nanofiber emulsion to the aqueous phase and homogenize it under pressure. Then, sonicate and adjust the pH to obtain the yerba mate nanofiber microemulsion.

[0013] Preferably, step (1) of extracting effective components from yerba mate includes the following steps: pre-crushing yerba mate to obtain yerba mate pre-crushed powder; adding the yerba mate pre-crushed powder to an extractant for extraction to obtain yerba mate fiber solution; rotary evaporating to concentrate the yerba mate fiber solution, and ball milling the concentrated yerba mate fiber solution using a nanoball mill to obtain yerba mate nanofiber solution.

[0014] Preferably, the pre-crushed yerba mate powder has a particle size of 1–100 μm.

[0015] Preferably, the extractant includes one or more of water, ethanol, methanol, isopropanol, n-butanol, and propanol.

[0016] Preferably, the ratio of the pre-crushed yerba mate powder to the extractant is (1-100)g:(10-1000)ml.

[0017] Preferably, the extraction temperature is 60–100°C and the extraction time is 1–20 h.

[0018] Preferably, the rotary evaporation concentrates the yerba mate fiber stock solution to 5-30 wt% of its initial mass.

[0019] Preferably, the ball milling temperature is 5–30°C and the ball milling time is 3–10 h.

[0020] Preferably, the yerba mate nanofiber liquid is a mixture containing nano-sized yerba mate fibers, wherein the nano-sized yerba mate fibers have a particle size of 10–90 nm.

[0021] Preferably, in step (2), the surfactant includes one or more of nonionic surfactants, anionic surfactants, cationic surfactants, and double-chain ionic surfactants.

[0022] Further preferably, in step (2), the surfactant includes one or more of the following: polyoxyethylene sorbitan monostearate (Tween 80), sodium dodecyl sulfate (SDS), sodium dodecylbenzene sulfonate (SDBS), hexadecyltrimethylammonium bromide (CTAB), and sodium dioctyl succinate sulfonate (AOT).

[0023] Preferably, in step (2), the co-surfactant includes one or more of n-propanol, isobutanol, n-pentanol, isopentanol, 1-hexanol, 2-hexanol, 1-octanol, 2-octanol, fusel oil, and p-nonylphenol.

[0024] Preferably, in step (2), the oil phase includes one or more of cyclohexane, n-hexane, paraffin oil, cyclopentane, isooctane, epoxidized soybean oil, epoxidized sunflower oil, dimethyl silicone oil, polydimethylsiloxane, and white mineral oil.

[0025] Preferably, in step (2), the mass ratio of surfactant, co-surfactant, oil phase and yerba mate nanofiber liquid extract is (10-20): (1-15): (10-30): (10-20).

[0026] Preferably, in step (3), the pressure is increased to 0.1-10 MPa, the homogenization speed is 1000-10000 rpm, and the time is 1-20 min.

[0027] Preferably, in step (3), the ultrasonic time is 30–60 min, and the pH is adjusted to 4.0–7.0. Within this pH range, the stability of the active ingredients in tea fiber in the microemulsion can be significantly improved.

[0028] Preferably, the base fiber pulp includes one or more of cotton fiber pulp, silk fiber pulp, bamboo fiber pulp, flax fiber pulp, and hemp fiber pulp.

[0029] The second objective of this invention is achieved through the following technical solution:

[0030] A method for preparing a composite fiber containing nano-natural tea fiber, the method comprising the following steps: impregnating, pressing, crushing, xanthating, dissolving, filtering and defoaming a base fiber pulp to obtain a fiber viscose spinning solution; then injecting yerba mate nanofiber microemulsion into the base fiber pulp before spinning and mixing it evenly to obtain a composite fiber spinning solution; and then performing spinning and post-treatment to obtain a composite fiber containing nano-natural tea fiber.

[0031] Preferably, the mass ratio of the yerba mate nanofiber microemulsion to the fiber viscose spinning solution is (1-5):(5-10).

[0032] Preferably, the pressing pressure is 0.5-1.5 MPa, the particle size is 1-5 mm, the CS2 dosage during xanthation is 20-50 wt%, and the xanthation temperature is 20-40 °C.

[0033] Preferably, the post-processing operations include washing, drying, and shaping.

[0034] The third objective of this invention is achieved through the following technical solution:

[0035] A composite fiber fabric containing nano-natural tea fibers is obtained by processing the aforementioned composite fiber containing nano-natural tea fibers.

[0036] The fourth objective of this invention is achieved through the following technical solution:

[0037] Application of a composite fiber fabric containing nano-natural tea fiber in the preparation of clothing and home furnishings.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. This invention provides a composite fiber containing nano-natural tea fibers, integrating nanotechnology into the preparation of natural tea fibers. These nano-natural tea fibers can be uniformly dispersed in the spinning solution, ensuring the uniform distribution of effective components in the tea fibers. The small size and high surface area of ​​the nanoscale fibers make them more stable in the spinning solution, less prone to aggregation, thereby improving the uniformity and consistency of the fibers. Specifically, the small size allows the effective components to penetrate the skin more easily, improving their bioavailability and thus enhancing the fabric's antibacterial, deodorizing, and antioxidant effects; the high surface area facilitates contact between the effective components and the skin, increasing their absorption rate and improving the fabric's skin-care effects. Furthermore, the addition of nano-natural tea fibers can also improve the mechanical properties of the fibers, increasing their strength and toughness, making the fabric more durable, and improving the fabric's feel and comfort.

[0040] 2. This invention provides a composite fiber containing nano-natural tea fibers. Using a microemulsion method, multiple soluble and insoluble active ingredients from tea leaves can be simultaneously and uniformly dispersed in a yerba mate nanofiber microemulsion, effectively showcasing the fabric's multi-functionality. The microemulsion system exhibits high uniformity and long-term stability. During the spinning process of the composite fiber, no additional surfactants are needed to achieve high dispersion of the nano-tea fibers in the spinning solution, ensuring the long-lasting effectiveness of the resulting functional fabric. The preparation process of this yerba mate nanofiber microemulsion is simple, can be seamlessly integrated with spinning processes, improves production efficiency, and is suitable for large-scale industrial production, meeting market demands.

[0041] 3. This invention provides a composite fiber containing nano-natural tea fibers, wherein the nano-natural tea fibers are made from yerba mate nanofiber microemulsion. Yerba mate is rich in various tea polyphenols, including catechins and flavonoids. It also contains theaflavins, saponins, and unique yerba mate alkaloids. Applying yerba mate to fibers to create fabrics suitable for close contact with the skin offers significant advantages in terms of health, environmental protection, and comfort. Specifically, various components in yerba mate can effectively inhibit bacterial growth and extend the lifespan of the fabric. Tea polyphenols can also adsorb and decompose odor molecules, reducing odors caused by sweat and bacterial metabolism. Secondly, tea polyphenols, theaflavins, and yerba mate alkaloids have excellent moisturizing properties, absorbing and locking in moisture to keep the skin hydrated and soft, reducing dryness and roughness. In addition, the antioxidants in yerba mate can reduce the production of free radicals, protect the skin from oxidative damage, help delay skin aging, and maintain healthy and youthful skin.

[0042] 4. This invention provides a composite fiber containing nano-natural tea fibers, incorporating yerba mate nanofiber microemulsion. This microemulsion contains a unique yerba mate alkaloid, a natural alkaloid similar to caffeine but with different physiological effects. The application of yerba mate in natural tea fibers can bring various benefits, particularly in antibacterial, deodorizing, energizing, and stress-relieving properties. On one hand, it can synergize with tea polyphenols to further enhance the antibacterial effect; on the other hand, yerba mate can stimulate the central nervous system, improving alertness and concentration. Wearing tea fiber fabric containing yerba mate can provide a certain degree of energizing effect, making one feel refreshed. While yerba mate has an energizing effect, compared to caffeine, its effect is milder and will not cause excessive excitement or anxiety. It can help relieve stress and provide a feeling of ease and relaxation. Detailed Implementation

[0043] The technical solution of the present invention will be further described below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various modifications or alterations to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0044] Example 1

[0045] The preparation method of the yerba mate nanofiber microemulsion in this embodiment includes the following steps:

[0046] (1) 10g of yerba mate tea leaves were pulverized using a fluidized bed airflow ultrafine pulverizer to obtain yerba mate tea pre-pulverized powder with a particle size of 100μm. The yerba mate tea pre-pulverized powder was added to 100ml of ethanol and extracted at 80℃ for 5h to obtain yerba mate tea fiber solution. The yerba mate tea fiber solution was concentrated to 15% of the initial mass by rotary evaporation. Then, the concentrated yerba mate tea fiber solution was ball-milled using a nanoball mill to make the particle size of the nano-sized yerba mate tea fibers 60nm, thus obtaining yerba mate tea nanofiber solution.

[0047] (2) Add 15g of polyoxyethylene dehydrated sorbitan monostearate and 10g of n-propanol to 20g of cyclohexane and stir to obtain a pre-emulsion. Then add 20g of yerba mate nanofiber liquid and continue stirring to disperse it evenly to obtain yerba mate nanofiber emulsion.

[0048] (3) Add the yerba mate nanofiber emulsion to water, homogenize at 0.1 MPa and 5000 rpm for 5 min, then sonicate for 45 min and adjust the pH to 6.0 to obtain the yerba mate nanofiber microemulsion.

[0049] The preparation method of the above-mentioned composite fiber containing nano-natural tea fiber includes the following steps: 200g of cotton fiber pulp is soaked in 18g / L NaOH solution at 35℃ for 2h; pressed at 1MPa until the water content is 50wt%; pulverized to an average particle size of 3mm; 50g of CS2 is added at 30℃ for xanthation for 1h; the xanthation product is added to 10wt% NaOH solution and dissolved and matured at 20℃ for 3h; then filtered and vacuum degassed to obtain a fiber viscose spinning solution; then 30g of yerba mate nanofiber microemulsion is added by injection before spinning and mixed evenly to obtain a composite fiber spinning solution; then spinning and post-treatment are performed to obtain a composite fiber containing nano-natural tea fiber.

[0050] Example 2

[0051] The preparation method of the yerba mate nanofiber microemulsion in this embodiment includes the following steps:

[0052] (1) 15g of yerba mate tea leaves were pulverized using a fluidized bed airflow ultrafine pulverizer to obtain yerba mate tea pre-pulverized powder with a particle size of 100μm. The yerba mate tea pre-pulverized powder was added to 250ml of water and extracted at 80℃ for 5h to obtain yerba mate tea fiber solution. The yerba mate tea fiber solution was concentrated to 15% of the initial mass by rotary evaporation. Then, the concentrated yerba mate tea fiber solution was ball-milled using a nanoball mill to make the particle size of the nano-sized yerba mate tea fibers 60nm, thus obtaining yerba mate tea nanofiber liquid.

[0053] (2) Add 18g sodium dodecyl sulfate and 15g isobutanol to 30g paraffin oil and stir to obtain a pre-emulsion. Then add 20g yerba mate nanofiber liquid and continue stirring to disperse it evenly to obtain yerba mate nanofiber emulsion.

[0054] (3) Add yerba mate nanofiber emulsion to water and stir for 30 min, homogenize at 1 MPa and 5000 rpm for 3 min, then sonicate for 30 min and adjust pH to 6.0 to obtain yerba mate nanofiber microemulsion.

[0055] The preparation method of the composite fiber containing nano-natural tea fiber in this embodiment is the same as that in Example 1.

[0056] Comparative Example 1

[0057] The difference between this comparative example and Example 1 is that yerba mate fiber solution is used instead of yerba mate nanofiber microemulsion in the composite fiber raw material, otherwise it is the same as Example 1.

[0058] The preparation method of the yerba mate fiber extract includes the following steps: 10g of yerba mate tea leaves are pulverized using a fluidized bed airflow ultrafine pulverizer to obtain yerba mate tea pre-pulverized powder with a particle size of 100μm. The yerba mate tea pre-pulverized powder is added to 100ml of ethanol and extracted at 80℃ for 5h to obtain yerba mate fiber stock solution.

[0059] Comparative Example 2

[0060] The difference between this comparative example and Example 1 is that green tea nanofiber microemulsion is used instead of yerba mate nanofiber microemulsion in the composite fiber raw material; otherwise, it is the same as in Example 1.

[0061] The preparation method of the green tea nanofiber microemulsion includes the following steps:

[0062] (1) 10g of green tea leaves were pulverized using a fluidized bed airflow ultrafine pulverizer to obtain green tea leaf pre-pulverized powder with a particle size of 100μm. The green tea leaf pre-pulverized powder was added to 100ml of ethanol and extracted at 80℃ for 5h to obtain green tea fiber stock solution. The green tea fiber stock solution was concentrated by rotary evaporation to 15% of the initial mass. Then, the concentrated green tea fiber stock solution was ball-milled using a nanoball mill to make the particle size of the nano-sized green tea fibers in it 60nm, thus obtaining green tea nanofiber liquid.

[0063] (2) Add 15g of polyoxyethylene dehydrated sorbitan monostearate and 10g of n-propanol to 20g of cyclohexane and stir to obtain a pre-emulsion. Then add 20g of green tea fiber extract and continue stirring to disperse it evenly to obtain green tea nanofiber emulsion.

[0064] (3) Add green tea nanofiber emulsion to water, homogenize at 0.1 MPa and 5000 rpm for 5 min, then sonicate for 45 min and adjust pH to 6.0 to obtain green tea nanofiber microemulsion.

[0065] Comparative Example 3

[0066] The difference between this comparative example and Example 1 is that yerba mate nanofiber microemulsion was not added to the raw materials, and conventional cotton fibers were used for subsequent tests.

[0067] The composite fibers from the above embodiments and comparative examples were processed through carding, spinning, and weaving to obtain composite fiber fabrics. The resulting fabrics were then subjected to relevant performance tests, the specific test standards of which are as follows:

[0068] Elongation at break was determined according to ISO 13934-1 standard;

[0069] The odor-proof performance was tested according to ISO 17299-1 standard. The sample was placed in a sealed container containing odorous gas for 24 hours, and the concentration of odorous gas in the container was measured using a gas chromatograph.

[0070] Moisture retention and hygroscopic properties were determined according to ASTM D2258 standard;

[0071] Air permeability was measured according to ISO 9237 standard;

[0072] The sensory evaluation of the fabric was conducted by trained technicians on a scale of 1 to 5, where 1 indicates very rough and 5 indicates very comfortable.

[0073] The specific measurement results are shown in Table 1.

[0074] Table 1. Performance test results of the examples and comparative examples.

[0075]

[0076] The obtained fabric was subjected to antibacterial performance testing, and the inhibition rate of Escherichia coli and Staphylococcus aureus was determined according to ISO 20743 standard.

[0077] The obtained fabric was subjected to antioxidant performance testing, and the free radical scavenging rate was determined by spectrophotometry according to the DPPH analysis method.

[0078] The specific test results are shown in Table 2.

[0079] Table 2. Antibacterial performance test results of the examples and comparative examples.

[0080]

[0081] As shown in Tables 1 and 2, the composite fibers containing nano-natural tea fibers prepared using the technical solution of this invention exhibit excellent moisturizing and wicking effects, breathability, deodorizing effects, antibacterial effects, and antioxidant effects when applied to fabrics. The introduction of nano-tea fiber microemulsions can also enhance the mechanical properties of the fibers. Composite with base fibers can effectively increase the smoothness of the fabric and improve its skin-friendly effect, making it suitable for preparing functional skin-friendly products. This sufficiently demonstrates that the composite fibers containing nano-natural tea fibers of this invention have broad application prospects as functional textile materials and are expected to become an important part of the future textile market.

[0082] All aspects, embodiments, and features of this invention should be considered illustrative in all respects and not limiting of the invention; the scope of the invention is defined only by the claims. Other embodiments, modifications, and uses will become apparent to those skilled in the art without departing from the spirit and scope of the invention as claimed.

[0083] In the preparation method of this invention, the order of the steps is not limited to the listed order. For those skilled in the art, variations in the order of the steps without creative effort are also within the scope of protection of this invention. Furthermore, two or more steps or actions can be performed simultaneously.

[0084] Finally, it should be noted that the specific embodiments described herein are merely illustrative examples of the invention and are not intended to limit the implementation of the invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them; it is neither necessary nor possible to exemplify all embodiments here. However, these obvious variations or modifications derived from the essential spirit of the invention still fall within the scope of protection of the invention, and interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A composite fiber containing nano-natural tea fiber, characterized in that, The raw materials for preparing the composite fiber include yerba mate nanofiber microemulsion and fiber viscose spinning solution. The preparation method of the yerba mate nanofiber microemulsion includes the following steps: (1) Extract the active ingredients from yerba mate tea leaves to obtain yerba mate nanofiber liquid; (2) Add the surfactant and co-surfactant to the oil phase and stir to obtain a pre-emulsion. Then add the yerba mate nanofiber liquid to the pre-emulsion and continue stirring to disperse it evenly to obtain the yerba mate nanofiber emulsion. (3) Add the yerba mate nanofiber emulsion to the aqueous phase and homogenize it under pressure. Then, sonicate and adjust the pH to obtain the yerba mate nanofiber microemulsion.

2. The composite fiber containing nano-natural tea fiber according to claim 1, characterized in that, In step (1), the extraction of effective components from yerba mate tea leaves includes the following steps: pre-crushing yerba mate tea leaves to obtain yerba mate tea pre-crushed powder; adding the yerba mate tea pre-crushed powder to an extractant for extraction to obtain yerba mate tea fiber solution; rotary evaporating to concentrate the yerba mate tea fiber solution, and using a nanoball mill to ball mill the concentrated yerba mate tea fiber solution to obtain yerba mate tea nanofiber solution.

3. The composite fiber containing nano-natural tea fiber according to claim 2, characterized in that, The particle size of the pre-crushed yerba mate powder is 1~100μm; The extractant includes one or more of water, ethanol, methanol, isopropanol, n-butanol, and propanol; The ratio of the pre-pulverized yerba mate powder to the extract is (1~100) g : (10~1000) ml; The extraction temperature is 60~100℃, and the extraction time is 1~20h; Concentrate the yerba mate fiber concentrate to 5-30 wt% of its initial weight by rotary evaporation. The ball milling temperature is 5~30℃, and the ball milling time is 3~10h; The yerba mate nanofiber liquid is a mixture containing nano-sized yerba mate fibers, the nano-sized yerba mate fibers having a particle size of 10~90nm.

4. The composite fiber containing nano-natural tea fiber according to claim 1, characterized in that, In step (2), the surfactant includes one or more of nonionic surfactants, anionic surfactants, cationic surfactants, and double-chain ionic surfactants. In step (2), the co-surfactant includes one or more of the following: n-propanol, isobutanol, n-pentanol, isopentanol, 1-hexanol, 2-hexanol, 1-octanol, 2-octanol, fusel oil, and p-nonylphenol. In step (2), the oil phase includes one or more of cyclohexane, n-hexane, paraffin oil, cyclopentane, isooctane, epoxidized soybean oil, epoxidized sunflower oil, polydimethylsiloxane, and white mineral oil. In step (2), the mass ratio of surfactant, co-surfactant, oil phase and yerba mate fiber extract is (10~20):(1~15):(10~30):(10~20). In step (3), the pressure is increased to 0.1~10 MPa, the homogenization speed is 1000~10000 rpm, and the time is 1~20 min; In step (3), the ultrasonic time is 30-60 min, and the pH is adjusted to 4.0-7.

0.

5. The composite fiber containing nano-natural tea fiber according to claim 1, characterized in that, The fiber viscose spinning solution is obtained from basic fiber pulp through impregnation, pressing, crushing, xanthation, dissolution, filtration and defoaming processes; The basic fiber pulp includes one or more of cotton fiber pulp, bamboo fiber pulp, and hemp fiber pulp; The mass ratio of the yerba mate nanofiber microemulsion to the fiber viscose spinning solution is (1~5):(5~10).

6. A composite fiber fabric containing nano-natural tea fibers, characterized in that, It is obtained by processing composite fibers containing nano-natural tea fibers as described in any one of claims 1-5.

7. The application of a composite fiber fabric containing nano-natural tea fiber as described in claim 6 in the preparation of clothing and home furnishings.

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