Formula of skin-friendly moistening mask cloth and preparation method of skin-friendly moistening mask cloth

Abstract

The invention relates to the technical field of mask cloth formulas, in particular to a skin-friendly permeable mask cloth formula and a preparation method thereof.The skin-friendly permeable mask cloth formula comprises a protective layer, a biological cellulose layer, an attaching layer and a base material; the protective layer comprises the following components in percentage by mass: 1%-5% of a nanofiber membrane, 10%-20% of a biodegradable material and 0.1%-1% of an antibacterial agent; the biological cellulose layer comprises the following components: 50-60% of biological cellulose, 5-10% of an additive, 1-5% of a nano material and the like; the fitting layer comprises the following components: 10%-20% of a microporous breathable film, 5%-15% of a biocompatible material and the like; according to the mask cloth, the multi-layer structural design of the protective layer, the biological cellulose layer, the attaching layer and the base material is adopted, each layer has a specific function, the antibacterial function of the protective layer, the moisturizing and nourishing functions of the biological cellulose layer, the elasticity and air permeability of the attaching layer and the supporting function of the base material, and the multi-layer design can more comprehensively meet the requirements of skin; and an all-around skin care effect is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of facial mask cloth formulations, and particularly to a skin-friendly and moisturizing facial mask cloth formulation and a preparation method thereof. Background Art

[0002] Skin-friendly and moisturizing facial mask cloth usually refers to a facial mask cloth made of relatively traditional materials and technologies, aiming to provide moisturizing and hydrating skin care effects. Non-woven fabric is one of the most common materials in traditional facial mask cloth, which is made of chemical fibers and formed into a cloth shape by physical or chemical methods to bond the fibers together.

[0003] However, traditional skin-friendly and moisturizing facial mask cloth mostly uses non-woven fabric or traditional mask cloth, which is soft in texture but has poor fit, skin-friendliness and air permeability. It is often difficult to closely fit the facial contour, resulting in uneven distribution of essence liquid and affecting the skin care effect. Its skin care effect is limited and it is difficult to solve deep-seated skin problems.

[0004] Therefore, aiming at the problems that the above skin-friendly and moisturizing facial mask cloth formulations mostly use non-woven fabric or pure cotton mask cloth and have limitations in terms of fit, essence liquid carrying capacity, air permeability and biocompatibility. Summary of the Invention

[0005] In order to overcome the problems that the skin-friendly and moisturizing facial mask cloth formulations mostly use non-woven fabric or pure cotton mask cloth and have limitations in terms of fit, essence liquid carrying capacity, air permeability and biocompatibility.

[0006] The technical solution of the present invention is: a skin-friendly and moisturizing facial mask cloth formulation, including a protective layer, a biocellulose layer, a fitting layer and a substrate; calculated by mass percentage, the protective layer includes the following components: nanofiber membrane 1% - 5%, biodegradable material 10% - 20%, antibacterial agent 0.1% - 1%;

[0007] The biocellulose layer includes the following components: biocellulose 50% - 60%, additive 5% - 10%, nanomaterial 1% - 5%, plant extract 2% - 10% and moisturizing factor 1% - 2%;

[0008] The fitting layer includes the following components: microporous breathable membrane 10% - 20%, biocompatible material 5% - 15%, elastic fiber 2% - 5% and skin-friendly coating 0.1% - 0.3%.

[0009] Preferably, the antibacterial agent specifically adopts any one of phenoxyethanol or ethylhexylglycerin.

[0010] Preferably, the additive is specifically any one or more of hyaluronic acid, collagen and peptides; the nanomaterial is specifically any one of nanosilver and nanopeal powder or a combination of the two; the plant extract is specifically any one or more of green tea extract, aloe extract and licorice extract; the moisturizing factor is specifically any one or more of sodium hyaluronate, glycerol and propylene glycol.

[0011] Preferably, the biocompatible material is specifically any one of silk and bamboo fiber; the elastic fiber is specifically any one of polyurethane elastic fiber and polyester elastic fiber; the skin-friendly coating is specifically any one of silicone coatings and polyurethane coatings.

[0012] A method for preparing a skin-friendly and moisturizing facial mask cloth, which includes the skin-friendly and moisturizing facial mask cloth formula as described above, and the steps are as follows:

[0013] S1: Preparation of the protective layer

[0014] S11: Mixing and stirring

[0015] Cut the nanofiber membrane into pieces and add it to a high-speed blender together with the biodegradable material, stir evenly, set the rotation speed to 500 - 800 r / min, stir for 10 - 15 minutes, then slowly add the antibacterial agent and continue to stir for 5 - 8 minutes to ensure that the antibacterial agent is evenly dispersed in the mixture;

[0016] S12: Hot pressing and forming

[0017] Transfer the stirred mixture to a hot press mold, with the temperature between 150 - 180 °C, the pressure between 5 - 8 MPa, and the time controlled at 3 - 5 minutes to form a protective layer with a certain thickness and strength;

[0018] S2: Preparation of the biocellulose layer

[0019] S21: Biocellulose pretreatment

[0020] Soak the biocellulose in deionized water for 2 - 3 hours to make it fully absorb water and swell, then perform dehydration treatment to remove excess water and control its water content between 60% and 70%;

[0021] S22: Mixing and dispersion

[0022] Add the additive, nanomaterial, plant extract and moisturizing factor to an appropriate amount of deionized water in sequence, and use an ultrasonic disperser for dispersion, set the frequency to 40 - 60 kHz, and the dispersion time between 15 - 20 minutes to form a uniform mixed solution;

[0023] S23: Composite treatment

[0024] Put the pretreated biocellulose into the mixed solution and soak it at room temperature for 4 - 6 hours to allow the biocellulose to fully absorb the components in the mixed solution. Then take it out and dry it in an oven at a temperature of 40 - 50°C until the water content is 10% - 15% to form a biocellulose layer.

[0025] S3: Preparation of the bonding layer

[0026] S31: Pretreatment of raw materials

[0027] Corona - treat the microporous breathable membrane to increase its surface activity for facilitating subsequent bonding with other materials, and card the biocompatible material to make its fiber arrangement neat.

[0028] S32: Hybrid weaving

[0029] Hybrid - weave the elastic fiber with the pretreated biocompatible material, and control the weaving density between 80 - 100 fibers per square centimeter to form a base layer with certain elasticity and breathability.

[0030] S33: Coating treatment

[0031] Dissolve the skin - friendly coating material in an organic solvent to make a coating solution with a concentration of 5% - 10%. Spray the coating solution evenly on the surface of the base layer by spraying, control the spraying amount at 10 - 15 g per square meter, and then dry it under the condition of a temperature of 60 - 80°C to form the bonding layer.

[0032] S4: Lamination of the facial mask cloth

[0033] S41: Laminating and bonding

[0034] Place the prepared protective layer, biocellulose layer, and bonding layer in sequence in a laminator, and perform laminating and bonding at a temperature of 100 - 120°C and a pressure of 3 - 5 MPa for 2 - 3 minutes to make the three - layer materials tightly combined into one body.

[0035] S42: Cutting and packaging

[0036] Cut the laminated facial mask cloth according to the required size, and then perform aseptic packaging to obtain the finished product of the skin - friendly and moisturizing facial mask cloth.

[0037] Preferably, in S12, the surface roughness Ra of the hot - press die is controlled at 0.2 - 0.8 μm to ensure good surface flatness of the pressed protective layer. At the same time, during the hot - press process, the heating rate is 5 - 10°C / min, and the cooling rate is 3 - 7°C / min.

[0038] Preferably, the dehydration treatment in S21 adopts centrifugal dehydration. The rotation speed of the centrifuge is 1000 - 2000 r / min, and the dehydration time is 5 - 10 minutes. The water content of the bacterial cellulose is precisely controlled within the range of 60% - 70%.

[0039] Preferably, the soaking process in S23 adopts intermittent stirring. The stirring speed is 30 - 50 r / min, and the stirring time interval is 30 - 60 minutes, which promotes the full absorption of the components of the mixed solution by the bacterial cellulose.

[0040] Preferably, in the mixed weaving of S32, the mixing ratio of the elastic fiber to the biocompatible material is 1:3 - 1:5. By precisely controlling the ratio, the elastic recovery rate of the woven base layer reaches 60% - 80%, and the air permeability is 20 - 30 mm / s.

[0041] Preferably, the sharpness of the cutting tool of the cutting device in S42 is maintained such that the edge wear amount is less than 0.02 mm, ensuring that the cutting edge is neat and free of burrs; the aseptic packaging adopts ethylene oxide sterilization. The sterilization temperature is 37 - 63 °C, and the sterilization time is 4 - 8 hours. The cleanliness of the packaging environment reaches Class 1000.

[0042] Advantages of the present invention: The mask fabric adopts a multi-layer structure design of a protective layer, a bacterial cellulose layer, a fitting layer, and a base material. Each layer undertakes a specific function, including the antibacterial property of the protective layer, the moisturizing and nourishing properties of the bacterial cellulose layer, the elasticity and air permeability of the fitting layer, and the supporting effect of the base material. This multi-layer design enables the mask fabric to more comprehensively meet the needs of the skin and provide an all-round skin care effect. The addition of nano materials and plant extracts further enhances the skin care efficacy of the mask fabric, such as the antibacterial effect of nano silver and the antioxidant effect of green tea extract, etc. The biodegradable material is used in the formula, enabling the mask fabric to be naturally degraded after use, reducing environmental pollution. The fitting layer adopts a biocompatible material and elastic fiber, enabling the mask fabric to closely fit the facial contour and provide a comfortable use experience. The addition of the skin-friendly coating further enhances the smooth touch of the mask fabric and the function of reducing friction. The mask fabric is aseptically packaged after cutting and undergoes ethylene oxide sterilization treatment to ensure the safety and hygiene of the product. This is a very important guarantee for consumers with sensitive skin or vulnerable to infection. Detailed Embodiments

[0043] Embodiment 1

[0044] The present invention will be further described below in conjunction with the embodiments.

[0045] The present invention provides an embodiment: a formula for a skin-friendly and moisturizing facial mask cloth, which includes a protective layer, a biocellulose layer, a fitting layer and a substrate; calculated by mass percentage, the protective layer includes the following components: nanofiber membrane 1%, biodegradable material 10%, antibacterial agent 0.1%, and the antibacterial agent is specifically any one of phenoxyethanol or ethylhexylglycerin;

[0046] The biocellulose layer includes the following components: biocellulose 50%, additive 5%, nanomaterial 1%, plant extract 2% and moisturizing factor 1%. The additive is specifically any one or more of hyaluronic acid, collagen and peptides; the nanomaterial is specifically any one of nanosilver and nanopeal powder or a combination of both; the plant extract is specifically any one or more of green tea extract, aloe extract and licorice extract; the moisturizing factor is specifically any one or more of sodium hyaluronate, glycerin and propylene glycol;

[0047] The fitting layer includes the following components: microporous breathable membrane 10%, biocompatible material 5%, elastic fiber 2% and skin-friendly coating 0.1%. The biocompatible material is specifically any one of silk and bamboo fiber; the elastic fiber is specifically any one of polyurethane elastic fiber and polyester elastic fiber; the skin-friendly coating is specifically any one of silicone coating and polyurethane coating.

[0048] A preparation method of the skin-friendly and moisturizing facial mask cloth, which includes the formula of the skin-friendly and moisturizing facial mask cloth as described above, and the steps are as follows:

[0049] S1: Preparation of the protective layer

[0050] S11: Mixing and stirring

[0051] After cutting the nanofiber membrane into pieces, add it together with the biodegradable material to a high-speed mixer, stir evenly, set the rotation speed to 500 - 800 r / min, stir for 10 - 15 minutes, then slowly add the antibacterial agent, and continue to stir for 5 - 8 minutes to ensure that the antibacterial agent is evenly dispersed in the mixture;

[0052] S12: Hot pressing and forming

[0053] Transfer the stirred mixture to a hot press mold, the temperature is between 150 - 180 °C, the pressure is between 5 - 8 MPa, and the time is controlled within 3 - 5 minutes to make a protective layer with a certain thickness and strength. The surface roughness Ra of the hot press mold is controlled at 0.2 - 0.8 μm to ensure good surface flatness of the pressed protective layer. At the same time, the heating rate during the hot pressing process is 5 - 10 °C / min, and the cooling rate is 3 - 7 °C / min;

[0054] S2: Preparation of the biocellulose layer

[0055] S21: Pretreatment of Biocellulose

[0056] Soak the biocellulose in deionized water for 2 - 3 hours to allow it to fully absorb water and swell, then perform dehydration treatment to remove excess water and control its water content between 60% and 70%. The dehydration treatment uses centrifugal dehydration, with the centrifuge speed at 1000 - 2000 r / min and the dehydration time at 5 - 10 minutes, precisely controlling the water content of the biocellulose within the range of 60% - 70%;

[0057] S22: Mixing and Dispersion

[0058] Add additives, nanomaterials, plant extracts, and moisturizing factors to an appropriate amount of deionized water in sequence, and use an ultrasonic disperser for dispersion. Set the frequency to 40 - 60 kHz and the dispersion time between 15 - 20 minutes to form a uniform mixed solution;

[0059] S23: Composite Treatment

[0060] Put the pretreated biocellulose into the mixed solution and soak it at room temperature for 4 - 6 hours to allow the biocellulose to fully absorb the components in the mixed solution, then take it out and dry it in an oven at a temperature of 40 - 50°C until the water content is 10% - 15% to make a biocellulose layer. During the soaking process, use intermittent stirring, with the stirring speed at 30 - 50 r / min and the stirring time interval at 30 - 60 minutes to promote the full absorption of the components of the mixed solution by the biocellulose;

[0061] S3: Preparation of the Laminating Layer

[0062] S31: Pretreatment of Raw Materials

[0063] Perform corona treatment on the microporous breathable membrane to increase its surface activity for subsequent lamination with other materials, and card the biocompatible material to make its fiber arrangement neat;

[0064] S32: Mixing and Weaving

[0065] Mix and weave elastic fibers with the pretreated biocompatible material, controlling the weaving density between 80 - 100 fibers per square centimeter to form a base layer with certain elasticity and breathability. During the mixing and weaving, the mixing ratio of elastic fibers to biocompatible material is 1:3 - 1:5. By precisely controlling the ratio, the elastic recovery rate of the woven base layer reaches 60% - 80%, and the breathability is 20 - 30 mm / s;

[0066] S33: Coating Treatment

[0067] Dissolve the skin-friendly coating material in an organic solvent to make a coating solution with a concentration of 5%-10%. Spray the coating solution evenly on the surface of the base layer by spraying, and control the spraying amount at 10-15 g per square meter. Then dry it at a temperature of 60-80 °C to form a fitting layer.

[0068] S4: Mask cloth lamination

[0069] S41: Laminating and fitting

[0070] Place the prepared protective layer, biocellulose layer and fitting layer in the laminator in sequence, and perform laminating and fitting at a temperature of 100-120 °C and a pressure of 3-5 MPa for 2-3 minutes to tightly combine the three layers of materials into one body.

[0071] S42: Cutting and packaging

[0072] Cut the laminated mask cloth according to the required size, and then perform aseptic packaging to obtain the finished skin-friendly and moisturizing mask cloth. The sharpness of the cutting tool of the cutting equipment is maintained at an edge wear of less than 0.02 mm to ensure that the cutting edge is neat and there are no burrs; the aseptic packaging uses ethylene oxide sterilization, the sterilization temperature is 37-63 °C, the sterilization time is 4-8 hours, and the cleanliness of the packaging environment reaches 1000 class.

[0073] Example 2

[0074] The present invention will be further described below in conjunction with the embodiments.

[0075] The present invention provides an embodiment: a skin-friendly and moisturizing mask cloth formula, including a protective layer, a biocellulose layer, a fitting layer and a substrate; in terms of mass percentage, the protective layer includes the following components: 5% nanofiber membrane, 20% biodegradable material, 1% antibacterial agent, and the antibacterial agent specifically adopts any one of phenoxyethanol or ethylhexylglycerin;

[0076] The biocellulose layer includes the following components: 60% biocellulose, 10% additive, 5% nanomaterial, 10% plant extract and 2% moisturizing factor. The additive specifically adopts any one or more of hyaluronic acid, collagen and peptides; the nanomaterial specifically adopts any one or a combination of nanosilver and nanopeal powder; the plant extract specifically adopts any one or more of green tea extract, aloe extract and licorice extract; the moisturizing factor specifically adopts any one or more of sodium hyaluronate, glycerin and propylene glycol;

[0077] The adhering layer comprises the following components: microporous breathable film 20%, biocompatible material 15%, elastic fiber 5% and skin-friendly coating 0.3%. The biocompatible material is specifically any one of silk and bamboo fiber; the elastic fiber is specifically any one of polyurethane elastic fiber and polyester elastic fiber; the skin-friendly coating is specifically any one of silicone coating and polyurethane coating.

[0078] The preparation method of the skin-friendly and moisturizing facial mask cloth, which comprises the skin-friendly and moisturizing facial mask cloth formula as described above, and the steps are as follows:

[0079] S1: Preparation of the protective layer

[0080] S11: Mixing and stirring

[0081] Cut the nanofiber membrane into pieces and add it together with the biodegradable material into a high-speed mixer, stir evenly, set the rotation speed to 500 - 800 r / min, stir for 10 - 15 minutes, then slowly add the antibacterial agent and continue to stir for 5 - 8 minutes to ensure that the antibacterial agent is evenly dispersed in the mixture;

[0082] S12: Hot pressing and forming

[0083] Transfer the stirred mixture to the hot press mold, with the temperature between 150 - 180 °C, the pressure between 5 - 8 MPa, and the time controlled within 3 - 5 minutes to form a protective layer with a certain thickness and strength. The surface roughness Ra of the hot press mold is controlled within 0.2 - 0.8 μm to ensure good surface flatness of the pressed protective layer. At the same time, the heating rate during the hot pressing process is 5 - 10 °C / min, and the cooling rate is 3 - 7 °C / min;

[0084] S2: Preparation of the biocellulose layer

[0085] S21: Pretreatment of biocellulose

[0086] Soak the biocellulose in deionized water for 2 - 3 hours to make it fully absorb water and swell, then perform dehydration treatment to remove excess water and control its water content within 60% - 70%. The dehydration treatment adopts centrifugal dehydration, with the centrifuge rotation speed of 1000 - 2000 r / min and the dehydration time of 5 - 10 minutes, precisely controlling the water content of the biocellulose within the range of 60% - 70%;

[0087] S22: Mixing and dispersion

[0088] Add the additive, nanomaterial, plant extract and moisturizing factor to an appropriate amount of deionized water in sequence, and use an ultrasonic disperser for dispersion, with the frequency set to 40 - 60 kHz and the dispersion time between 15 - 20 minutes to form a uniform mixed solution;

[0089] S23: Composite treatment

[0090] Put the pretreated biocellulose into the mixed solution, soak it at room temperature for 4 - 6 hours to allow the biocellulose to fully absorb the components in the mixed solution, then take it out and dry it in an oven at a temperature of 40 - 50°C until the water content is 10% - 15% to form a biocellulose layer. During the soaking process, intermittent stirring is used, the stirring speed is 30 - 50 r / min, and the stirring time interval is 30 - 60 minutes to promote the full absorption of the components of the mixed solution by the biocellulose;

[0091] S3: Preparation of the bonding layer

[0092] S31: Raw material pretreatment

[0093] Corona treat the microporous breathable membrane to increase its surface activity for subsequent bonding with other materials, and card the biocompatible material to make its fiber arrangement neat;

[0094] S32: Mixed weaving

[0095] Mix and weave elastic fibers with the pretreated biocompatible material, control the weaving density between 80 - 100 fibers per square centimeter to form a base layer with certain elasticity and breathability. During the mixed weaving, the mixing ratio of elastic fibers to biocompatible material is 1:3 - 1:5. By precisely controlling the ratio, the elastic recovery rate of the woven base layer reaches 60% - 80%, and the breathability is 20 - 30 mm / s;

[0096] S33: Coating treatment

[0097] Dissolve the skin-friendly coating material in an organic solvent to make a coating solution with a concentration of 5% - 10%. Spray the coating solution evenly on the surface of the base layer by spraying, control the spraying amount at 10 - 15 g per square meter, and then dry it at a temperature of 60 - 80°C to form the bonding layer;

[0098] S4: Mask cloth composite

[0099] S41: Laminating and bonding

[0100] Place the prepared protective layer, biocellulose layer and bonding layer in sequence in a laminator, and perform laminating and bonding at a temperature of 100 - 120°C and a pressure of 3 - 5 MPa for 2 - 3 minutes to make the three-layer materials tightly combined into one;

[0101] S42: Cutting and packaging

[0102] The compounded facial mask fabric is cut according to the required size and then subjected to aseptic packaging, thus obtaining the finished product of the skin-friendly and moisturizing facial mask fabric. The sharpness of the cutting tool of the cutting equipment is maintained such that the edge wear amount is less than 0.02 mm to ensure that the cutting edge is neat and free of burrs; the aseptic packaging uses ethylene oxide sterilization, the sterilization temperature is 37 - 63 °C, the sterilization time is 4 - 8 hours, and the cleanliness of the packaging environment reaches Class 1000.

[0103] Experimental Example

[0104] The skin-friendly and moisturizing facial mask fabrics produced in Example 1 and Example 2 and the honeycomb doughs produced from traditional non-woven fabrics or traditional fabric membranes are respectively set as one group, for a total of three groups, and each group of experiments is repeated 3 - 5 times. The following are the data obtained from the experiments:

[0105] It is evaluated by measuring the percentage of the contact area between the facial mask fabric and the facial skin;

[0106] The air permeability rate of the facial mask fabric is measured using an air permeability tester;

[0107] The moisturizing property is measured by measuring the change in the moisture content of the skin 2 hours after applying the facial mask;

[0108] The antibacterial property is evaluated by culturing the bacteria on the facial mask fabric and calculating the percentage reduction in the number of colonies;

[0109] The essence liquid carrying capacity is evaluated by measuring the amount of essence liquid that the facial mask fabric can adsorb;

[0110] The elastic recovery rate is evaluated by measuring the recovery ability of the facial mask fabric after stretching;

[0111] The results of the above experimental data are as follows:

[0112]

Claims

1. The formula of skin-friendly and moisturizing facial mask cloth is characterized by: It includes a protective layer, a biocellulose layer, a bonding layer and a substrate; the protective layer includes the following components by mass percentage: 1% to 5% of a nanofiber membrane, 10% to 20% of a biodegradable material, and 0.1% to 1% of an antibacterial agent; The biocellulose layer comprises the following components: 50% to 60% of biocellulose, 5% to 10% of additives, 1% to 5% of nanomaterials, 2% to 10% of plant extracts and 1% to 2% of moisturizing factors; The fitting layer comprises the following components: 10% to 20% of microporous breathable film, 5% to 15% of biocompatible material, 2% to 5% of elastic fiber and 0.1% to 0.3% of skin-friendly coating.

2. The skin-friendly and moisturizing facial mask cloth formula according to claim 1, characterized in that: The antibacterial agent may be phenoxyethanol or ethylhexylglycerin.

3. The skin-friendly and moisturizing facial mask cloth formula according to claim 1, characterized in that: The additives specifically include any one or more of hyaluronic acid, collagen and peptides; the nanomaterials specifically include any one or a combination of nanosilver and nano pearl powder; the plant extracts specifically include any one or more of green tea extract, aloe extract and licorice extract; the moisturizing factors specifically include any one or more of sodium hyaluronate, glycerin and propylene glycol.

4. The skin-friendly and moisturizing facial mask cloth formula according to claim 1, characterized in that: The biocompatible material specifically adopts any one of silk and bamboo fiber; the elastic fiber specifically adopts any one of polyurethane elastic fiber and polyester elastic fiber; the skin-friendly coating specifically adopts any one of silicone coating and polyurethane coating.

5. A method for preparing a skin-friendly and moisturizing facial mask cloth, characterized in that The method comprises the skin-friendly and moisturizing facial mask cloth formula according to claims 1 to 4, and the steps are as follows: S1: Preparation of protective layer S11: Mixing Cut the nanofiber membrane into pieces and add them together with the biodegradable material into a high-speed mixer, stir evenly, set the speed to 500-800r / min, stir for 10-15 minutes, then slowly add the antibacterial agent, continue stirring for 5-8 minutes, and ensure that the antibacterial agent is evenly dispersed in the mixture; S12: Hot Press Forming The stirred mixture is transferred to a hot press mold, the temperature is between 150-180°C, the pressure is between 5-8MPa, and the time is controlled within 3-5 minutes to form a protective layer with a certain thickness and strength; S2: Preparation of biocellulose layer S21: Biocellulose pretreatment The biocellulose is soaked in deionized water for 2-3 hours to allow it to fully absorb water and swell, and then dehydrated to remove excess water so that its water content is controlled between 60% and 70%; S22: Mixing and dispersion Add additives, nanomaterials, plant extracts and moisturizing factors to an appropriate amount of deionized water in sequence, and disperse them using an ultrasonic disperser with a frequency set to 40-60kHz and a dispersion time of 15-20 minutes to form a uniform mixed solution; S23: Composite Processing The pretreated biocellulose is placed in the mixed solution and soaked at room temperature for 4-6 hours to allow the biocellulose to fully absorb the components in the mixed solution, then taken out and dried in an oven at a temperature of 40-50°C to a moisture content of 10%-15% to form a biocellulose layer; S3: Preparation of lamination layer S31: Raw material pretreatment The microporous breathable membrane is subjected to corona treatment to increase its surface activity to facilitate subsequent bonding with other materials, and the biocompatible material is combed to arrange its fibers neatly; S32: Mixed Braid The elastic fibers are mixed with the pretreated biocompatible materials and the weaving density is controlled between 80-100 fibers per square centimeter to form a base layer with certain elasticity and air permeability; S33: Coating treatment The skin-friendly coating material is dissolved in an organic solvent to prepare a coating solution with a concentration of 5%-10%, and the coating solution is evenly sprayed on the surface of the base layer by spraying, and the spraying amount is controlled at 10-15g per square meter, and then dried at a temperature of 60-80°C to form a bonding layer; S4: Mask cloth composite S41: Lamination Place the prepared protective layer, biocellulose layer and laminating layer in a laminating machine in order, and perform lamination and lamination at a temperature of 100-120°C and a pressure of 3-5MPa for 2-3 minutes to tightly combine the three layers of materials into one; S42: Cutting and Packaging The composited mask cloth is cut into required sizes and then aseptically packaged to obtain a finished skin-friendly and moisturizing mask cloth.

6. The method for preparing the skin-friendly and moisturizing facial mask cloth according to claim 5, characterized in that: The surface roughness Ra of the hot press mold in S12 is controlled at 0.2-0.8μm to ensure that the surface flatness of the pressed protective layer is good. At the same time, the heating rate during the hot pressing process is 5-10℃ / min, and the cooling rate is 3-7℃ / min.

7. The method for preparing the skin-friendly and moisturizing facial mask cloth according to claim 5, characterized in that: The dehydration treatment in S21 adopts a centrifugal dehydration method, the centrifuge speed is 1000-2000r / min, the dehydration time is 5-10 minutes, and the water content of the biocellulose is accurately controlled within the range of 60%-70%.

8. The method for preparing the skin-friendly and moisturizing facial mask cloth according to claim 5, characterized in that: The soaking process in S23 adopts intermittent stirring, with a stirring speed of 30-50 r / min and a stirring time interval of 30-60 minutes, so as to promote the full absorption of the mixed solution components by the biocellulose.

9. The method for preparing the skin-friendly and moisturizing facial mask cloth according to claim 5, characterized in that: In the mixed weaving of S32, the mixing ratio of elastic fiber and biocompatible material is 1:3-1:

5. By precisely controlling the ratio, the elastic recovery rate of the woven base layer reaches 60%-80%, and the air permeability is 20-30mm / s.

10. The method for preparing the skin-friendly and moisturizing facial mask cloth according to claim 5, characterized in that: The sharpness of the cutting tool in S42 is maintained at a blade wear of less than 0.02mm, ensuring that the cutting edges are neat and free of burrs; sterile packaging is sterilized by ethylene oxide at a sterilization temperature of 37-63°C and a sterilization time of 4-8 hours. The cleanliness of the packaging environment reaches Class 1000.

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