Preparation method of Binchotan cellulose mask cloth

Abstract

The invention discloses a preparation method of Binchotan cellulose mask cloth, and belongs to the field of skincare materials. The preparation method of the binchotan cellulose mask cloth comprises the following steps: opening and mixing binchotan fibers and lignin fibers, and carding to form a fiber net; the fiber net is soaked and pre-wetted through the pre-wetting liquid, and pre-wetted cloth is obtained; spunlace is conducted on the pre-wetted cloth through spunlace liquid, then drying is conducted, and the Binchotan cellulose mask cloth is prepared; the spunlace liquid is formed by compounding silanetriol trehalose ether, a soapberry fruit extract and water. The mask cloth has the advantage that the application effect of the mask cloth containing the binchotan fibers is improved.

Description

Technical Field

[0001] This application relates to the field of cosmetic and skincare materials, and in particular to a method for preparing a binchotan charcoal cellulose facial mask sheet. Background Technology

[0002] A face mask is a skincare product that can be temporarily applied to the face. It helps the skin remove metabolic waste products and accumulated oil from the epidermis. The moisture in the mask penetrates the stratum corneum of the epidermis, improving the skin's softness and leaving it naturally radiant and elastic.

[0003] A face mask typically consists of a mask sheet and a mask liquid soaked in the sheet. The mask sheet acts as a carrier for the mask liquid, which contains skin-care ingredients that provide moisturizing and soothing effects, further enhancing whitening and anti-aging benefits. With the diversification of functions, the mask sheet is no longer just a carrier. For example, adding binchotan fiber to the mask sheet is beneficial. Binchotan fiber is made from tungsten carbide oak and calcined at 1200℃. It releases negative ions, providing a relaxing and stress-relieving effect for the user.

[0004] However, the bonding force between binchotan charcoal fiber and the main fiber of the mask sheet is relatively weak, which affects the overall skin-fitting properties and the ability of the mask sheet to hold the mask liquid, thus reducing the application effect. Summary of the Invention

[0005] In order to improve the application effect of mask cloth containing binchotan charcoal fiber, this application provides a method for preparing binchotan charcoal cellulose mask cloth.

[0006] The preparation method of binchotan charcoal cellulose facial mask cloth provided in this application adopts the following technical solution: A method for preparing binchotan cellulose facial mask fabric includes the following steps: Binchotan charcoal fiber and lignin fiber are loosely mixed and combed to form a fiber web; The fiber web is pre-wetted by impregnating it with a pre-wetting liquid to obtain a pre-wetted fabric; The pre-wetted cloth is hydroentangled with a hydroentangled liquid and then dried to obtain a binchotan cellulose mask cloth. The hydrosol is a compound made from silanetriol trehalose ether, soapberry fruit extract and water.

[0007] By adopting the above technical solution, lignin fiber is selected as the main fiber of the mask cloth. The high porosity and good breathability of lignin fiber can improve the comfort of using the mask cloth. However, the interfacial bonding force between lignocellulose and binchotan fiber is weak, and the uniformity of the fiber network formed is poor, making it difficult to give full play to the effects of lignin fiber and binchotan fiber.

[0008] This method pre-wets the fiber web before hydroentangling, moistening the lignocellulose and binchotan fibers. This facilitates the rapid and even contact of the components in the hydroentangling solution with the lignocellulose and binchotan fibers during the hydroentangling process. The silanetriol trehalose ether provides excellent wetting, while the saponins in the soapberry fruit extract act as natural surfactants. Together, these components improve the interfacial bonding between the lignocellulose and binchotan fibers, promoting further bonding between the lignin and binchotan fibers during hydroentangling. This enhances the effectiveness of both fibers, resulting in a more skin-adherent mask sheet and improved absorption of the mask solution. Furthermore, the short time the hydroentangling solution remains on the pre-wetted cloth during the hydroentangling process effectively prevents excessive retention of the solution components in the mask sheet, thus balancing the structural stability of the mask sheet with its skincare benefits.

[0009] Optionally, the hydroentangling process includes four hydroentangling stages: the pressure of the first hydroentangling stage is 80–90 Bar, the pressure of the second hydroentangling stage is 90–110 Bar, the pressure of the third hydroentangling stage is 130–140 Bar, and the pressure of the fourth hydroentangling stage is 190–200 Bar.

[0010] By employing the above technical solution, a hydroentanglement pressure gradient is formed, achieving proper entanglement of lignocellulose and binchotan fibers in the mask fabric. The first two hydroentanglement pressure gradients are small, meeting the requirements for initial fiber entanglement, allowing the hydroentanglement fluid components to gradually penetrate. From the third hydroentanglement onwards, the hydroentanglement pressure gradient increases, deepening the entanglement and improving the structural stability of the mask fabric. Simultaneously, the hydroentanglement fluid modifies the mask fabric structure, improving its skin-fitting properties and enhancing its breathability and moisture permeability, further improving comfort.

[0011] Optionally, the distance between the spunlace head of the first and second hydroentanglement stages and the pre-wetted cloth is 15-20 mm, the distance between the spunlace head of the third hydroentanglement stage and the pre-wetted cloth is 8-10 mm, and the distance between the spunlace head of the fourth hydroentanglement stage and the pre-wetted cloth is 12-15 mm.

[0012] By adopting the above technical solution, the first two hydroentanglement stages belong to the pre-entanglement stage. With the smaller pressure of the first two hydroentanglement stages, the larger hydroentanglement spacing can reduce the occurrence of excessive fiber entanglement and avoid excessive fiber damage. The third hydroentanglement stage reduces the hydroentanglement spacing, which can strengthen the entanglement, improve the strength of the mask fabric, and promote the uniform penetration of the hydroentanglement liquid. The fourth hydroentanglement stage increases the hydroentanglement spacing while increasing the pressure, realizing the combing of the mask fabric surface and improving the breathability and moisture permeability of the mask fabric.

[0013] Optionally, in the first hydroentanglement solution, silanetriol trehalose ether, Sapindus mukorossi fruit extract, and water are compounded in a mass ratio of (0.2–0.6):(0.8–1.2):100; in the second and third hydroentanglement solutions, silanetriol trehalose ether, Sapindus mukorossi fruit extract, and water are compounded in a mass ratio of (3–4):(1.5–2):100; and in the fourth hydroentanglement solution, silanetriol trehalose ether, Sapindus mukorossi fruit extract, and water are compounded in a mass ratio of (1.5–2.5):(1–1.5):100.

[0014] By adopting the above technical solution, and combining the changes in the hydroentangling pressure and spacing of each hydroentangling stage, the proportion of hydroentangling liquid components in each hydroentangling stage is adjusted. This allows for better utilization of the wetting and modification effects of silanetriol trehalose ether and Sapindus mukorossi fruit extract on the fiber surface during the hydroentangling process, promoting the bonding between binchotan charcoal fiber and lignin fiber, and improving the mechanical properties of the mask fabric.

[0015] Optionally, the pre-wetting liquid is prepared by compounding castor oil alcohol polyether and water in a mass ratio of (5-7):100.

[0016] By adopting the above technical solution, the pre-wetting liquid containing castor oil alcohol polyether is used to pre-wet the fiber web, improve the surface activity of binchotan charcoal fiber, synergistically promote the penetration of hydroentanglement components, and improve the interfacial bonding between binchotan charcoal fiber and lignin fiber.

[0017] Optionally, the fineness of the binchotan charcoal fiber is 1.5 to 1.8 dtex and the length is 15 to 25 mm.

[0018] Optionally, the lignin fibers have a length of 4 to 8 mm.

[0019] By adopting the above technical solutions, binchotan charcoal fiber and lignin fiber are used as fiber materials for facial mask sheets. They have the advantages of being skin-friendly and comfortable. In addition, binchotan charcoal fiber can release negative ions, which can have the effect of reducing pressure and soothing.

[0020] Optionally, drying can be performed using hot air penetration.

[0021] By adopting the above technical solution, hot air can penetrate the spunlace fiber nonwoven material, which can achieve rapid drying of the mask cloth.

[0022] In summary, this application has the following beneficial effects: 1. This application selects lignin fiber as the main fiber of the mask fabric. Lignin fiber has high porosity and good breathability, which can improve the comfort of using the mask fabric. However, the interfacial bonding force between lignocellulose and binchotan charcoal fiber is weak, resulting in poor uniformity of the fiber network and making it difficult to fully utilize the effects of lignocellulose and binchotan charcoal fiber. In addition, pre-wetting the fiber network before hydroentangling helps the components in the hydroentangling solution to quickly and evenly contact the lignocellulose and binchotan charcoal fiber during the hydroentangling process. Among them, silanetriol trehalose ether has a good wetting effect, and the saponins contained in Sapindus mukorossi fruit extract are natural surfactants. The two work together to improve the interfacial bonding force between lignocellulose and binchotan charcoal fiber, thereby promoting further bonding between binchotan charcoal fiber and lignin fiber during the hydroentangling process, maximizing the effects of lignocellulose and binchotan charcoal fiber, making the mask fabric more skin-friendly, and improving the capacity of the mask solution to be absorbed. Furthermore, the hydro-spunlace solution remains on the pre-wetted cloth for a short time during the hydro-spunlace process, effectively preventing excessive retention of the hydro-spunlace solution components in the mask cloth, thereby balancing the structural stability of the mask cloth and the skincare effect.

[0023] 2. By controlling the hydroentangling pressure, hydroentangling spacing, and hydroentangling solution concentration at each stage of the hydroentangling process, the fiber network structure of the mask fabric is further modified to improve the structural strength of the mask fabric, while also enhancing its breathability and moisture permeability, thus improving user comfort. Detailed Implementation

[0024] The following provides a further detailed description of this application.

[0025] Example 1 A method for preparing binchotan cellulose facial mask fabric includes the following steps: S1. Open and mix binchotan charcoal fiber and lignin fiber, wherein the fineness of binchotan charcoal fiber is 1.5 dtex and the length is 25 mm, the length of lignin fiber is 8 mm, and the mass ratio of binchotan charcoal fiber to lignin fiber is 1:1.

[0026] The mixed fibers enter the carding machine and are carded to form a fiber web.

[0027] S2. The fiber web is pre-wetted by impregnating it with a pre-wetting liquid to obtain a pre-wetted fabric.

[0028] The pre-wetting solution is a mixture of castor oil alcohol polyether-40 and water in a mass ratio of 5:100.

[0029] S3. The pre-wetted cloth is hydroentangled with a hydroentangled liquid.

[0030] The water-jetting process involves four water jets.

[0031] The pressure of the first hydroentanglement stage is 80 Bar, the distance between the hydroentanglement head of the first hydroentanglement stage and the pre-wetted cloth is 15 mm, and the hydroentanglement solution of the first hydroentanglement stage contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 0.6:1.2:100.

[0032] The pressure of the second hydroentanglement is 90 Bar, the distance between the hydroentanglement head of the second hydroentanglement and the pre-wetted cloth is 15 mm, and the hydroentanglement solution of the second hydroentanglement is compounded with silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 3:1.5:100.

[0033] The pressure of the third hydroentanglement is 130 Bar, the distance between the hydroentanglement head of the third hydroentanglement and the pre-wetted cloth is 8 mm, and the hydroentanglement solution of the third hydroentanglement contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 3:1.5:100.

[0034] The pressure of the fourth hydroentanglement is 190 Bar, the distance between the hydroentanglement head of the fourth hydroentanglement and the pre-wetted cloth is 12 mm, and the hydroentanglement solution of the fourth hydroentanglement is compounded with silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 1.5:1:100.

[0035] Then, the fabric is dried using hot air penetration to obtain binchotan cellulose facial mask cloth.

[0036] Example 2 A method for preparing binchotan cellulose facial mask fabric includes the following steps: S1. Open and mix binchotan charcoal fiber and lignin fiber, wherein the fineness of binchotan charcoal fiber is 1.8 dtex and the length is 15 mm, the length of lignin fiber is 4 mm, and the mass ratio of binchotan charcoal fiber to lignin fiber is 1:1.

[0037] The mixed fibers enter the carding machine and are carded to form a fiber web.

[0038] S2. The fiber web is pre-wetted by impregnating it with a pre-wetting liquid to obtain a pre-wetted fabric.

[0039] The pre-wetting solution is a mixture of castor oil alcohol polyether-40 and water in a mass ratio of 7:100.

[0040] S3. The pre-wetted cloth is hydroentangled with a hydroentangled liquid.

[0041] The water-jetting process involves four water jets.

[0042] The pressure of the first hydroentanglement is 90 Bar, the distance between the hydroentanglement head of the first hydroentanglement and the pre-wetted cloth is 20 mm, and the hydroentanglement solution of the first hydroentanglement contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 0.2:0.8:100.

[0043] The pressure of the second hydroentanglement is 110 Bar, the distance between the hydroentanglement head of the second hydroentanglement and the pre-wetted cloth is 20 mm, and the hydroentanglement solution of the second hydroentanglement contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 4:2:100.

[0044] The pressure of the third hydroentanglement is 140 Bar, the distance between the hydroentanglement head of the third hydroentanglement and the pre-wetted cloth is 10 mm, and the hydroentanglement solution of the third hydroentanglement contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 4:2:100.

[0045] The pressure of the fourth hydroentanglement is 200 Bar, the distance between the hydroentanglement head of the fourth hydroentanglement and the pre-wetted cloth is 15 mm, and the hydroentanglement solution of the fourth hydroentanglement is compounded with silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 2.5:1.5:100.

[0046] Then, the fabric is dried using hot air penetration to obtain binchotan cellulose facial mask cloth.

[0047] Example 3 A method for preparing binchotan cellulose facial mask cloth. The difference between this embodiment and embodiment 1 is that in step S3, three hydroentangling steps are set.

[0048] The pressure of the first hydroentanglement stage is 80 Bar, the distance between the hydroentanglement head of the first hydroentanglement stage and the pre-wetted cloth is 15 mm, and the hydroentanglement solution of the first hydroentanglement stage contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 0.6:1.2:100.

[0049] The pressure of the second hydroentanglement is 90 Bar, the distance between the hydroentanglement head of the second hydroentanglement and the pre-wetted cloth is 15 mm, and the hydroentanglement solution of the second hydroentanglement is compounded with silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 3:1.5:100.

[0050] The pressure of the third hydroentanglement is 130 Bar, the distance between the hydroentanglement head of the third hydroentanglement and the pre-wetted cloth is 8 mm, and the hydroentanglement solution of the third hydroentanglement contains silanetriol trehalose ether, soapberry fruit extract and water in a mass ratio of 3:1.5:100.

[0051] Example 4 A method for preparing binchotan cellulose facial mask cloth. The difference between this embodiment and embodiment 1 is that the hydroentangling pressure in step S3 is different.

[0052] The pressure of the first water jet is 80 Bar, the pressure of the second water jet is 130 Bar, the pressure of the third water jet is 150 Bar, and the pressure of the fourth water jet is 170 Bar.

[0053] Example 5 A method for preparing binchotan cellulose facial mask fabric. The difference between this embodiment and Embodiment 1 is that in step S3, the hydroentanglement spacing is different.

[0054] The distance between the first hydroentangled head and the pre-wetted cloth is 15mm, the distance between the second hydroentangled head and the pre-wetted cloth is 15mm, the distance between the third hydroentangled head and the pre-wetted cloth is 12mm, and the distance between the fourth hydroentangled head and the pre-wetted cloth is 8mm.

[0055] Example 6 A method for preparing binchotan cellulose facial mask cloth. The difference between this embodiment and Example 1 is that the concentration of the hydroentanglement solution in the hydroentanglement step is different in S3.

[0056] In the first hydrospinning solution, silanetriol trehalose, Sapindus mukorossi fruit extract, and water were blended in a mass ratio of 3:2:100. In the second hydrospinning solution, silanetriol trehalose, Sapindus mukorossi fruit extract, and water were blended in a mass ratio of 3:1.5:100. In the third hydrospinning solution, silanetriol trehalose, Sapindus mukorossi fruit extract, and water were blended in a mass ratio of 3:1.5:100. In the fourth hydrospinning solution, silanetriol trehalose, Sapindus mukorossi fruit extract, and water were blended in a mass ratio of 0.2:0.8:100.

[0057] Example 7 A method for preparing binchotan cellulose facial mask cloth, the difference between this embodiment and embodiment 1 is that in S2, the pre-wetting liquid is pure water.

[0058] Comparative Example 1 A method for preparing binchotan cellulose facial mask cloth. The difference between this comparative example and Example 1 is that in S3, the hydroentanglement solution is pure water.

[0059] Comparative Example 2 A method for preparing binchotan cellulose facial mask cloth. The difference between this comparative example and Example 1 is that in S3, the composition of the hydroentanglement solution is different.

[0060] In the first hydrospinning solution, Sapindus mukorossi fruit extract and water were mixed at a mass ratio of 1.8:100. In the second hydrospinning solution, Sapindus mukorossi fruit extract and water were mixed at a mass ratio of 4.5:100. In the third hydrospinning solution, Sapindus mukorossi fruit extract and water were mixed at a mass ratio of 4.5:100. In the fourth hydrospinning solution, Sapindus mukorossi fruit extract and water were mixed at a mass ratio of 2.5:100.

[0061] Comparative Example 3 A method for preparing binchotan cellulose facial mask cloth. The difference between this comparative example and Example 1 is that in S3, the composition of the hydroentanglement solution is different.

[0062] In the first hydroentangling solution, silanetriol trehalose ether and water are blended at a mass ratio of 1.8:100. In the second hydroentangling solution, silanetriol trehalose ether and water are blended at a mass ratio of 4.5:100. In the third hydroentangling solution, silanetriol trehalose ether and water are blended at a mass ratio of 4.5:100. In the fourth hydroentangling solution, silanetriol trehalose ether and water are blended at a mass ratio of 2.5:100.

[0063] Performance Test: Water Absorption Rate: The water absorption rate of the mask sheet is tested to evaluate its ability to hold the mask liquid. Cut individual 3cm x 3cm samples of the mask sheet, weigh them on a balance, and place them in a beaker of water. After 10 minutes, remove and weigh them again, calculating the water absorption rate. Water Absorption Rate = (Mass of the mask sheet after water absorption - Mass of the mask sheet before water absorption) / Mass of the mask sheet before water absorption × 100%.

[0064] Tensile strength: determined according to GB / T 24218.3-2010 "Textiles - Test methods for nonwoven fabrics - Part 3: Determination of tensile strength and tensile productivity (strip method)".

[0065] The test results are shown in Table 1.

[0066] Comfort: The comfort of the face mask fabric was evaluated by testing its air permeability and moisture permeability. Air permeability was determined according to GB / T 5453-1997 "Textiles - Determination of Air Permeability of Fabrics" using a YG461H fully automatic air permeability meter at a pressure of 100 MPa. The face mask fabric was cut into 20cm pieces. 2 The area of ​​the area; the moisture permeability was tested according to standard GB / T 12704-1991 using the positive cup method, with test conditions of 38℃ and 90% humidity.

[0067] Skin fit: The softness of the mask fabric is evaluated by testing its bending properties. Sufficient softness allows the mask fabric to fit the face more closely, resulting in better skin fit. The test is conducted according to the method specified in GB / T 18318.1-2009 "Determination of bending properties of textiles - Part 1: Inclined plane method".

[0068] The test results are shown in Table 2.

[0069] Table 1 Table 2 Air permeability (mm / s) Moisture permeability (g / (m2·d)) Bending stiffness (mN·cm) Example 1 2057 1185 0.60 Example 2 1996 1137 0.66 Example 3 1563 977 0.82 Example 4 1597 1034 0.77 Example 5 1662 1069 0.75 Example 6 1708 1032 0.78 Example 7 1549 993 0.86 Comparative Example 1 1328 850 1.17 Comparative Example 2 1486 914 1.02 Comparative Example 3 1455 903 0.95 As can be seen from Tables 1 and 2, compared with the hydroentangled liquid which uses pure water, the hydroentangled liquid is composed of silanetriol trehalose ether, soapberry fruit extract and water, which improves the surface properties of the fibers and plays a regulatory role in the hydroentanglement process of the mask cloth. While ensuring the strength of the mask cloth, it improves the uniformity of the fiber network and allows for a certain degree of free displacement. Thus, hydroentanglement can effectively improve the water absorption rate of the mask cloth and reduce the bending stiffness, improve the mask cloth's ability to carry mask liquid and its skin-fitting properties, and enhance the overall experience.

[0070] As can be seen from Examples 1 and 3-6, the hydroentangling pressure, hydroentangling spacing, and hydroentangling liquid concentration in each hydroentangling step all affect the performance of the mask fabric. When properly controlled, these factors can also improve the tensile strength of the mask fabric, making it less prone to tearing, and increase breathability and moisture permeability, resulting in better breathability and sweat-wicking effect and further enhancing comfort.

[0071] 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 specific 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 method for preparing a binchotan cellulose facial mask sheet, characterized in that: Includes the following steps: Binchotan charcoal fiber and lignin fiber are loosely mixed and combed to form a fiber web; The fiber web is pre-wetted by impregnating it with a pre-wetting liquid to obtain a pre-wetted fabric; The pre-wetted cloth is hydroentangled with a hydroentangled liquid and then dried to obtain a binchotan cellulose mask cloth. The hydrosol is a compound made from silanetriol trehalose ether, soapberry fruit extract and water.

2. The method for preparing a binchotan cellulose facial mask fabric according to claim 1, characterized in that: The hydroentangling process involves four hydroentangling stages. The pressure of the first hydroentangling stage is 80-90 Bar, the pressure of the second hydroentangling stage is 90-110 Bar, the pressure of the third hydroentangling stage is 130-140 Bar, and the pressure of the fourth hydroentangling stage is 190-200 Bar.

3. The method for preparing a binchotan cellulose facial mask fabric according to claim 2, characterized in that: The distance between the spunlace head of the first and second hydroentangled layer and the pre-wetted cloth is 15-20 mm, the distance between the spunlace head of the third hydroentangled layer and the pre-wetted cloth is 8-10 mm, and the distance between the spunlace head of the fourth hydroentangled layer and the pre-wetted cloth is 12-15 mm.

4. The method for preparing a binchotan cellulose facial mask fabric according to claim 2, characterized in that: In the first hydrospinning solution, silanetriol trehalose ether, Sapindus mukorossi fruit extract, and water are mixed in a mass ratio of (0.2~0.6):(0.8~1.2):100; in the second and third hydrospinning solutions, silanetriol trehalose ether, Sapindus mukorossi fruit extract, and water are mixed in a mass ratio of (3~4):(1.5~2):100; in the fourth hydrospinning solution, silanetriol trehalose ether, Sapindus mukorossi fruit extract, and water are mixed in a mass ratio of (1.5~2.5):(1~1.5):

100.

5. The method for preparing a binchotan cellulose facial mask fabric according to claim 1, characterized in that: The pre-wetting solution is prepared by mixing castor oil alcohol polyether and water in a mass ratio of (5~7):

100.

6. The method for preparing a binchotan cellulose facial mask fabric according to claim 1, characterized in that: The binchotan charcoal fiber has a fineness of 1.5~1.8 dtex and a length of 15~25 mm.

7. The method for preparing a binchotan cellulose facial mask fabric according to claim 1, characterized in that: The length of the lignin fiber is 4~8mm.

8. The method for preparing a binchotan cellulose facial mask fabric according to claim 1, characterized in that: Drying is carried out using hot air penetration.

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