A plant fiber air cotton facial mask fabric and its preparation method

Abstract

The present application relates to the technical field of facial mask cloths, and specifically discloses a plant fiber air cotton facial mask cloth and a preparation method thereof. A plant fiber air cotton facial mask cloth is made of the following raw materials in parts by weight: 80-100 parts of plant fiber air cotton original cloth; 1.2-1.8 parts of sepiolite powder; 5-8 parts of hydroxypropyl cellulose; 2-4 parts of water-soluble plant gum; 10-20 parts of water; its preparation method is: after hydroxypropyl cellulose, water-soluble plant gum and water are stirred and mixed evenly, sepiolite powder is added, and stirring and mixing is continued to obtain a treatment liquid; then after the plant fiber air cotton original cloth is unfolded, the treatment liquid is evenly sprayed on the surface of the plant fiber air cotton original cloth, and hot air is blown during the spraying process. After drying after airing, the plant fiber air cotton facial mask cloth can be obtained. The plant fiber air cotton facial mask cloth of the present application, when used in combination with a facial mask liquid, can have a relatively outstanding and excellent water holding capacity in an environment with a higher temperature, thereby ensuring the stable and excellent performance of the functional ingredients in the facial mask liquid.

Description

Technical Field

[0001] This application relates to the field of facial mask fabric technology, and more specifically, to a plant fiber air cotton facial mask fabric and its preparation method. Background Technology

[0002] A face mask is a common skincare product. It is made by first cutting a mask base fabric, then allowing the cut base fabric to absorb the mask essence and moisture. The mask base fabric is usually made of non-woven fabric, which has good water absorption and high softness.

[0003] Air cotton, also known as air filter cotton, features tightly bonded yet fluffy fibers that effectively block dust particles and other pollutants. It feels soft and supple against the skin and has become increasingly popular in face mask applications in recent years. As is well known, face mask liquid is mostly water, creating a moist environment that promotes the absorption of active ingredients. However, in high ambient temperatures, the unique spatial structure of air cotton causes moisture to evaporate easily. A poorly moist environment can hinder the absorption of active ingredients, resulting in a less effective overall mask application.

[0004] Therefore, there is an urgent need to propose a solution to address the aforementioned technical problems. Summary of the Invention

[0005] In order to improve the water retention capacity of the mask cloth in high-temperature environments, this application provides a plant fiber air cotton mask cloth and its preparation method.

[0006] In a first aspect, this application provides a plant fiber air cotton facial mask cloth, which adopts the following technical solution:

[0007] A plant fiber air-cotton facial mask sheet, made from raw materials comprising the following parts by weight:

[0008] 80-100 parts of plant fiber air-cotton raw fabric;

[0009] 1.2-1.8 parts sepiolite powder;

[0010] 5-8 parts of hydroxypropyl cellulose;

[0011] 2-4 parts of water-soluble plant gum;

[0012] 10-20 parts water.

[0013] By adopting the above technical solution and selecting plant fiber air-cotton fabric, the softness and skin-friendly properties of plant fibers can be utilized to improve the comfort of the mask sheet during use. Furthermore, plant fibers have superior water retention properties, making them suitable for use in high-temperature environments. Based on the selection of plant fiber air-cotton fabric, it has good affinity with water-soluble plant gum. In addition to adhering to the surface of sepiolite powder, the water-soluble plant gum also partially fills the pores of the sepiolite powder particles and, under the action of hydroxypropyl cellulose, adheres to the surface of the plant fiber air-cotton fabric and partially penetrates into the fabric's structure. This allows sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum to exert an excellent synergistic effect on the plant fiber air-cotton fabric, thereby giving the mask sheet outstanding water retention capacity in high-temperature environments. This ensures that the plant fiber air-cotton mask sheet can exert excellent and stable efficacy when used in conjunction with the mask liquid.

[0014] Preferably, the plant fiber air-cotton fabric undergoes alkali treatment before application, and the alkali treatment steps are as follows:

[0015] The plant fiber air-cotton base fabric is soaked in a 7-8% sodium hydroxide solution for 10-12 hours, heated to 80-100℃ for 20-30 minutes, cooled, washed with water until neutral, and dried to obtain the alkali-treated plant fiber air-cotton base fabric.

[0016] By adopting the above technical solution, after the plant fiber air cotton base fabric is treated with the above alkali, the plant fibers can swell and the intermediate pores can be enlarged, and the interfacial bonding strength of the plant fibers on the plant fiber air cotton base fabric can be greatly improved. This makes it more conducive for the compounding of sepiolite powder, hydroxypropyl cellulose and water-soluble plant gum on the plant fiber air cotton base fabric to work, thereby greatly improving the water retention capacity of the plant fiber air cotton mask fabric at higher temperatures.

[0017] Preferably, the sepiolite powder is modified before application, and the modification steps are as follows:

[0018] S1. Immerse sepiolite powder in a hydrochloric acid solution with a concentration of 0.6-1.0 mol / L, acidify at 70-80℃ for 20-24 hours, cool, wash with water until neutral, and dry to obtain acidified sepiolite powder.

[0019] S2. Mix the acidified sepiolite powder with sodium hexametaphosphate evenly, add 0.2-0.4% of the weight of the mixture with hexadecyltrimethylammonium bromide, stir at 75-85℃ for 10-12 hours, cool and wash with water until neutral, and dry to obtain the modified sepiolite powder.

[0020] By adopting the above technical solution, the first step is to acidify the sepiolite powder. This not only removes impurities from its surface, enlarges the pores and increases the specific surface area, enhancing its compatibility with hydroxypropyl cellulose and water-soluble plant gums, but also forms a colloidal silica layer on the sepiolite powder surface, facilitating a tighter bond with the plant fiber air-cotton fabric. Subsequent organic treatment improves the dispersibility of the sepiolite powder and its bonding with plant fibers. Furthermore, the modified sepiolite powder, when applied to the alkali-treated plant fiber air-cotton fabric, exhibits a better synergistic effect. Thus, the modified sepiolite powder, after application, further improves the water-holding stability of the plant fiber air-cotton mask fabric at higher temperatures, allowing the active ingredients in the mask liquid to exert their excellent and stable effects.

[0021] Preferably, the particle size of the sepiolite powder is 200-1000 mesh.

[0022] By adopting the above technical solution, the sepiolite powder of the above specifications can stably serve as a carrier for water-soluble plant gum and, together with hydroxypropyl cellulose, stably adhere to the surface of the plant fiber air cotton fabric. Thus, when the plant fiber air cotton mask fabric is used in combination with the mask liquid, the sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum can stably and excellently exert their respective compounding effects, and have superior water retention capacity at higher temperatures.

[0023] Preferably, the plant fiber air-cotton base fabric is either plant fiber air-cotton needle-punched base fabric or plant fiber air-cotton spunlace base fabric.

[0024] By adopting the above technical solution, the compounding of sepiolite powder, hydroxypropyl cellulose and water-soluble plant gum can be stably applied to needle-punched fabric and spunlace fabric, and a high-quality and stable plant fiber air cotton mask fabric can be obtained.

[0025] Preferably, the blended fiber raw material used in the plant fiber air cotton fabric is any one or more of sisal fiber, jute fiber, ramie fiber, flax fiber, bamboo fiber, and cellulose fiber.

[0026] By adopting the above technical solutions, the above-mentioned plant fibers all have good skin-adhesion properties and excellent water retention capacity. They can also be fully and effectively combined with sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gums. The resulting plant fiber air cotton mask cloth can also have excellent and stable water retention capacity at higher temperatures.

[0027] Preferably, the water-soluble plant gum is one or a combination of several of guar gum, konjac gum, locust bean gum, and tamarind gum.

[0028] By adopting the above technical solutions, the above-mentioned water-soluble plant adhesives have good affinity with plant fiber air cotton fabric, and can achieve excellent and stable compounding effects with sepiolite powder and hydroxypropyl cellulose, thus obtaining plant fiber air cotton mask fabrics of excellent and stable quality.

[0029] Secondly, this application provides a method for preparing a plant fiber air-cotton facial mask fabric, using the following technical solution:

[0030] A method for preparing a plant fiber air-cotton facial mask sheet includes the following steps:

[0031] (1) Prepare the raw materials containing plant fiber air cotton fabric, sepiolite powder, hydroxypropyl cellulose, water-soluble plant gum and water according to the formula;

[0032] (2) After mixing the hydroxypropyl cellulose, water-soluble plant gum and water in step (1) evenly, add sepiolite powder and continue to mix evenly to obtain the treatment solution.

[0033] (3) After unfolding the plant fiber air cotton fabric in (1), spray the treatment liquid evenly on the surface of the plant fiber air cotton fabric. During the spraying process, blow it with hot air and dry it after airing to obtain the plant fiber air cotton mask fabric.

[0034] By adopting the above technical solution, the above preparation steps are relatively simple and suitable for large-scale industrial production. The process involves uniformly spraying the treatment liquid onto the surface of the plant fiber air cotton fabric, which is more efficient. The use of hot air to blow during the spraying process helps to better combine the sepiolite powder, hydroxypropyl cellulose, water-soluble plant gum and the plant fiber air cotton fabric, thereby obtaining a plant fiber air cotton mask fabric with excellent and stable quality.

[0035] In summary, this application has the following beneficial effects:

[0036] 1. Based on the selection of plant fiber air cotton base fabric, this application uses a compounding of sepiolite powder, hydroxypropyl cellulose and water-soluble plant gum on the plant fiber air cotton base fabric. The resulting plant fiber air cotton mask fabric, when used in combination with mask liquid, has a superior water retention capacity in high-temperature environments, thereby ensuring the stable performance of the active ingredients.

[0037] 2. This application improves the water retention capacity of plant fiber air cotton mask fabric at higher temperatures by alkali treatment of the original plant fiber air cotton fabric and modification of sepiolite powder. At the same time, the modified sepiolite powder acts on the alkali-treated original plant fiber air cotton fabric, and the synergy between them can exert a greater improvement effect, resulting in a plant fiber air cotton mask fabric with better water retention capacity at higher temperatures. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the embodiments.

[0039] Unless otherwise specified, all raw materials used in the preparation examples and embodiments of this application are commercially available.

[0040] Both the plant fiber air-cotton needle-punched and plant fiber air-cotton spunlace fabrics are supplied by Dongguan Kangchuang Nonwoven Technology Co., Ltd., with a thickness of 0.5cm, a width of 200cm, and a weight of 500g / m². 2 The plant fiber used has a diameter of 1.5d.

[0041] Preparation examples of raw materials and / or intermediates

[0042] Preparation Example 1

[0043] An alkali-treated plant fiber air-cotton base fabric is prepared by the following steps:

[0044] The plant fiber air-cotton base fabric is soaked in a 7.5% sodium hydroxide solution for 11 hours, heated to 90℃ for 25 minutes, cooled, washed with water until neutral, and dried to obtain the alkali-treated plant fiber air-cotton base fabric.

[0045] Preparation Example 2

[0046] An alkali-treated plant fiber air-cotton base fabric is prepared by the following steps:

[0047] The plant fiber air-cotton base fabric is soaked in a 7% sodium hydroxide solution for 12 hours, heated to 80℃ for 30 minutes, cooled, washed with water until neutral, and dried to obtain the alkali-treated plant fiber air-cotton base fabric.

[0048] Preparation Example 3

[0049] An alkali-treated plant fiber air-cotton base fabric is prepared by the following steps:

[0050] The plant fiber air-cotton base fabric is soaked in an 8% sodium hydroxide solution for 10 hours, heated to 100℃ for 20 minutes, cooled, washed with water until neutral, and dried to obtain the alkali-treated plant fiber air-cotton base fabric.

[0051] Preparation Example 4

[0052] A modified sepiolite powder is prepared by the following steps:

[0053] S1. Immerse sepiolite powder in a 0.8 mol / L hydrochloric acid solution, acidify at 75°C for 22 h, cool, wash with water until neutral, and dry to obtain acidified sepiolite powder.

[0054] S2. Mix the acidified sepiolite powder with 5% sodium hexametaphosphate at a weight ratio of 1:2.8. Add 0.3% hexadecyltrimethylammonium bromide by weight of the mixture. Stir at 80°C for 11 hours. After cooling, wash with water until neutral. After drying, the modified sepiolite powder can be obtained.

[0055] Note: The particle size of the sepiolite powder used in the above steps is 600 mesh.

[0056] Preparation Example 5

[0057] A modified sepiolite powder is prepared by the following steps:

[0058] S1. Immerse sepiolite powder in a 0.6 mol / L hydrochloric acid solution, acidify at 80°C for 20 h, cool, wash with water until neutral, and dry to obtain acidified sepiolite powder.

[0059] S2. Mix the acidified sepiolite powder with 5% sodium hexametaphosphate at a weight ratio of 1:2.8. Add 0.2% hexadecyltrimethylammonium bromide by weight of the mixture. Stir at 85°C for 10 hours. After cooling, wash with water until neutral. After drying, the modified sepiolite powder can be obtained.

[0060] Preparation Example 6

[0061] A modified sepiolite powder is prepared by the following steps:

[0062] S1. Immerse sepiolite powder in a 1.0 mol / L hydrochloric acid solution, acidify at 70°C for 24 hours, cool, wash with water until neutral, and dry to obtain acidified sepiolite powder.

[0063] S2. Mix the acidified sepiolite powder with 5% sodium hexametaphosphate at a weight ratio of 1:2.8. Add 0.4% hexadecyltrimethylammonium bromide by weight of the mixture. Stir at 75°C for 10 hours. After cooling, wash with water until neutral. After drying, the modified sepiolite powder can be obtained.

[0064] Example

[0065] Example 1

[0066] A plant fiber air-cotton facial mask cloth, the raw materials and their corresponding weights of which are shown in Table 1, is prepared by the following steps:

[0067] (1) Prepare the raw materials containing plant fiber air cotton fabric, sepiolite powder, hydroxypropyl cellulose, water-soluble plant gum and water according to the formula;

[0068] (2) After mixing the hydroxypropyl cellulose, water-soluble plant gum and water in step (1) at 300r / min for 5min, add sepiolite powder and continue to mix for 5min to obtain the treatment solution.

[0069] (3) After unfolding the plant fiber air cotton cloth in (1), spray the treatment liquid evenly on the surface of the plant fiber air cotton cloth. During the spraying process, blow hot air at a temperature of 80°C for 5 minutes. After drying at room temperature of 25°C for 5 minutes, the plant fiber air cotton mask cloth can be obtained.

[0070] Note: The plant fiber air cotton fabric mentioned in the above steps is plant fiber air cotton needle-punched fabric, and the blended fiber raw material used is sisal fiber; the water-soluble plant gum is tamarind gum; and the particle size of the sepiolite powder is 600 mesh.

[0071] Example 2-3

[0072] A plant fiber air cotton facial mask cloth differs from Example 1 in that the raw materials used and their corresponding weights are shown in Table 1.

[0073] Table 1. Raw materials and their weight parts (parts / kg) for each component in Examples 1-3

[0074]

[0075] Example 4

[0076] A plant fiber air cotton mask fabric, which differs from Example 1 in that the plant fiber air cotton base fabric is a plant fiber air cotton spunlace base fabric.

[0077] Example 5

[0078] A plant fiber air cotton mask fabric differs from Example 1 in that the blended fiber raw material used in the plant fiber air cotton fabric is bamboo fiber.

[0079] Example 6

[0080] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the water-soluble plant gum is guar gum.

[0081] Example 7

[0082] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder has a particle size of 200 mesh.

[0083] Example 8

[0084] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder has a particle size of 1000 mesh.

[0085] Example 9

[0086] A plant fiber air cotton mask cloth differs from Example 1 in that the same mass of the plant fiber air cotton cloth is replaced with the alkali-treated plant fiber air cotton cloth in Preparation Example 1.

[0087] Example 10

[0088] A plant fiber air cotton mask cloth differs from Example 1 in that the same mass of the plant fiber air cotton cloth is replaced with the alkali-treated plant fiber air cotton cloth in Preparation Example 2.

[0089] Example 11

[0090] A plant fiber air cotton mask cloth differs from Example 1 in that the same mass of the plant fiber air cotton original cloth is replaced with the alkali-treated plant fiber air cotton original cloth in Preparation Example 3.

[0091] Example 12

[0092] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder is replaced by the modified sepiolite powder in Preparation Example 4.

[0093] Example 13

[0094] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder is replaced by the modified sepiolite powder in Preparation Example 5.

[0095] Example 14

[0096] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder is replaced by the modified sepiolite powder in Preparation Example 6.

[0097] Example 15

[0098] A plant fiber air cotton mask cloth differs from Example 1 in that the original plant fiber air cotton cloth is replaced by the alkali-treated plant fiber air cotton cloth in Preparation Example 1; and the sepiolite powder is replaced by the modified sepiolite powder in Preparation Example 4.

[0099] Example 16

[0100] A plant fiber air cotton mask cloth, which differs from Example 1, is specifically set as follows: after unfolding the plant fiber air cotton cloth in (1), the treatment liquid is evenly sprayed on the surface of the plant fiber air cotton cloth, and dried after being left to stand at room temperature of 25°C for 5 minutes, the plant fiber air cotton mask cloth can be obtained.

[0101] Example 17

[0102] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder has a particle size of 150 mesh.

[0103] Example 18

[0104] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the sepiolite powder has a particle size of 1100 mesh.

[0105] Comparative Example

[0106] Comparative Example 1

[0107] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that it does not use sepiolite powder in the raw materials.

[0108] Comparative Example 2

[0109] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that hydroxypropyl cellulose is not used in the raw materials.

[0110] Comparative Example 3

[0111] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that water-soluble plant gum is not used in the raw materials.

[0112] Comparative Example 4

[0113] A plant fiber air cotton mask cloth, which differs from Example 1 in that the surface of the original plant fiber air cotton cloth contains only sepiolite powder.

[0114] Comparative Example 5

[0115] A plant fiber air cotton mask cloth, which differs from Example 1 in that the surface of the plant fiber air cotton cloth contains only hydroxypropyl cellulose.

[0116] Comparative Example 6

[0117] A plant fiber air cotton mask cloth, which differs from Example 1 in that the surface of the plant fiber air cotton cloth contains only water-soluble plant glue.

[0118] Comparative Example 7

[0119] A plant fiber air cotton facial mask cloth, which differs from Example 1 in that the plant fiber air cotton original cloth is the plant fiber air cotton facial mask cloth.

[0120] Comparative Example 8

[0121] A plant fiber air cotton mask fabric differs from Example 1 in that the blended fiber raw material used in the plant fiber air cotton fabric is polyester fiber.

[0122] Comparative Example 9

[0123] A plant fiber air cotton mask cloth differs from Comparative Example 7 in that the blended fiber raw material used in the air cotton cloth is polyester fiber.

[0124] Performance testing test samples: The plant fiber air cotton mask fabrics obtained in Examples 1-18 were used as test samples 1-18, and the plant fiber air cotton mask fabrics obtained in Comparative Examples 1-9 were used as control samples 1-9.

[0125] Experimental Method: Test samples 1-18 and control samples 1-9 were cut into 3cm × 3cm films, and their initial weight was measured. The films were then immersed in deionized water at 45℃ for 5 minutes until fully absorbed, at which point they were removed to obtain wet films. The weight of the wet films was then measured and subtracted from the initial weight to obtain the water absorption capacity of each film, denoted as G1. Next, the wet films were placed in a 70℃ oven for 5 minutes, and their weight was measured again and subtracted from the initial weight to obtain the water absorption capacity of each film after high-temperature treatment, denoted as G2. Finally, the water change rate (%) was calculated as: Water change rate (%) = (G1 - G2) / G1. A smaller water change rate indicates better water retention performance of the mask fabric at high temperatures after absorption.

[0126] Table 2 Test results of test samples 1-18 and control samples 1-9

[0127]

[0128]

[0129] Combining Example 1 and Comparative Examples 1-7 with Table 2, it can be seen that the compounding effect of sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum on the plant fiber air-cotton fabric enables the resulting plant fiber air-cotton fabric to exhibit excellent water-holding performance in high-temperature environments. While applying any one or two of sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum to the plant fiber air-cotton fabric results in an improved rate of change in tested water volume compared to the original fabric, the improvement is limited or merely a cumulative effect. This indicates that sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum can exert a superior synergistic effect, leading to a higher quality plant fiber air-cotton mask fabric. Combined with Comparative Examples 8-9 and Table 2, it can be seen that replacing plant fibers with polyester fibers results in a significant loss of the effect of the combination of sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum on the air cotton base fabric. Thus, it is evident that air cotton base fabric made from plant fibers is more suitable for combining sepiolite powder, hydroxypropyl cellulose, and water-soluble plant gum and can play a prominent role, resulting in a plant fiber air cotton mask fabric with outstanding water retention capacity at higher temperatures.

[0130] Combining Examples 1 and 7-8 with Table 2, it can be seen that sepiolite powder with a particle size of 200-1000 mesh exhibits excellent and stable compounding effects with hydroxypropyl cellulose and water-soluble plant gums during application, resulting in a plant fiber air-cotton mask fabric with superior water-holding capacity at higher temperatures. Furthermore, combining Examples 17-18 with Table 2, it can be seen that when the particle size of the sepiolite powder is lower or higher than the above range, the rate of change in water content increases significantly, indicating a significant reduction in the compounding effect between sepiolite powder and hydroxypropyl cellulose and water-soluble plant gums. Therefore, a sepiolite powder particle size of 200-1000 mesh is more suitable for producing a higher quality plant fiber air-cotton mask fabric.

[0131] As can be seen from Examples 1 and 9-11 and Table 2, alkali treatment of the plant fiber air-cotton fabric can further reduce the water change rate measured in the plant fiber air-cotton mask fabric test. As can be seen from Examples 1 and 12-14 and Table 2, modification of sepiolite powder can further reduce the water change rate measured in the plant fiber air-cotton mask fabric test. Furthermore, as can be seen from Example 15 and Table 2, the modified sepiolite powder and the alkali-treated plant fiber air-cotton fabric can exert a synergistic effect, greatly improving the water retention capacity of the plant fiber air-cotton mask fabric at higher temperatures.

[0132] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A plant fiber air-cotton facial mask cloth, characterized in that, Made from the following ingredients in parts by weight: 80-100 parts of plant fiber air-cotton raw fabric; 1.2-1.8 parts sepiolite powder; 5-8 parts of hydroxypropyl cellulose; 2-4 parts of water-soluble plant gum; 10-20 parts water; The plant fiber air-cotton fabric undergoes alkali treatment before application, and the alkali treatment steps are as follows: The plant fiber air cotton fabric is soaked in a 7-8% sodium hydroxide solution for 10-12 hours, heated to 80-100℃ for 20-30 minutes, cooled, washed with water until neutral, and dried to obtain the alkali-treated plant fiber air cotton fabric. The sepiolite powder is modified before application, and the modification steps are as follows: S1. Immerse sepiolite powder in a hydrochloric acid solution with a concentration of 0.6-1.0 mol / L, acidify at 70-80℃ for 20-24 hours, cool, wash with water until neutral, and dry to obtain acidified sepiolite powder. S2. Mix the acidified sepiolite powder with sodium hexametaphosphate evenly, add 0.2-0.4% of the weight of the mixture with hexadecyltrimethylammonium bromide, stir at 75-85℃ for 10-12 hours, cool and wash with water until neutral, and dry to obtain the modified sepiolite powder. The sepiolite powder has a particle size of 200-1000 mesh.

2. The plant fiber air-cotton facial mask fabric according to claim 1, characterized in that: The plant fiber air-cotton base fabric is either plant fiber air-cotton needle-punched base fabric or plant fiber air-cotton spunlace base fabric.

3. The plant fiber air-cotton facial mask fabric according to claim 1, characterized in that: The blended fiber raw materials used in the plant fiber air cotton fabric are any one or more of sisal fiber, jute fiber, ramie fiber, flax fiber, bamboo fiber, and cellulose fiber.

4. The plant fiber air-cotton facial mask fabric according to claim 1, characterized in that: The water-soluble plant gum is one or a combination of several of guar gum, konjac gum, locust bean gum, and tamarind gum.

5. The method for preparing the plant fiber air-cotton facial mask fabric according to claim 1, characterized in that, Includes the following steps: (1) Prepare raw materials containing plant fiber air cotton fabric, sepiolite powder, hydroxypropyl cellulose, water-soluble plant gum and water according to the formula; (2) After mixing the hydroxypropyl cellulose, water-soluble plant gum and water in step (1) evenly, add sepiolite powder and continue to mix evenly to obtain the treatment solution; (3) After unfolding the plant fiber air cotton fabric in (1), spray the treatment liquid evenly on the surface of the plant fiber air cotton fabric. During the spraying process, blow it with hot air and dry it after airing to obtain the plant fiber air cotton mask fabric.

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