A kind of gel facial mask and preparation method thereof

Abstract

A gel mask comprises a mask base cloth composed of acetate fiber, chitosan fiber and other fibers, wherein the acetate fiber content is 0-98wt%, the chitosan fiber content is 2-50wt%, and the other fiber content is 0-90wt%. The other fibers include one or two or more of cotton fiber, viscose fiber, cuprammonium fiber and tencel fiber. After the gel mask contacts the skin, the gel process is accelerated. The gelling time of the gel mask after contacting the skin is controllable, ranging from 20-60s. After the gel mask is added with water, the mask temperature drops, so that the contacted skin is cooled. The present invention also discloses a preparation method of the gel mask, which is obtained by positive pressure jet treatment and negative pressure air drying treatment. The gel mask of the present invention is soft to the touch, and only a small amount of water infiltration is required when using it to obtain a soft, transparent, water-locking and moisturizing skin care mask, with good skin fit, convenient to carry and easy to unfold and use.

Description

Technical Field

[0001] The invention belongs to the technical field of facial masks and relates to a gel facial mask and a preparation method thereof. Background Art

[0002] Facial mask is a skin care product that can achieve skin care functions (such as hydration, whitening, anti-aging, oil balance, etc.). With the increase of China's per capita disposable income and consumption level, domestic facial mask consumers are more pursuing the improvement of the quality of facial mask cloth and the upgrading of the efficacy of facial mask products, laying a solid foundation for the mid-to-high-end consumption of the facial mask market. Chitosan is a product of the natural polysaccharide chitosan with some acetyl groups removed. It has multiple physiological functions such as biodegradability, biocompatibility, non-toxicity, and antibacterial properties, and has been used as a high-end facial mask material. Chitosan facial mask has the characteristics of broad-spectrum antibacterial, adsorption and chelation, and can effectively inhibit bacteria, adsorb heavy metals on the skin, and moisturize and protect the skin.

[0003] Chinese invention patent CN201610136154.2 discloses a method for preparing a moisturizing facial mask containing chitosan / collagen microspheres, wherein the solution containing chitosan / collagen microspheres is evenly sprayed onto a blank facial mask and dried. The resulting facial mask has good moisturizing properties and skin contact feeling; Chinese invention patent CN201810644912.0 discloses a facial mask base fabric containing chitosan and bamboo charcoal fiber, wherein the bamboo charcoal fiber base fabric is soaked in a chitosan microsphere solution, and after the base fabric is soaked, it is dried. The above two patents are relatively common methods for preparing chitosan facial masks, but there is a phenomenon that the chitosan is not firmly bonded to the base fabric and falls off.

[0004] Chinese invention patent CN201610523567.6 discloses a method for preparing a chitosan mask, wherein a fruit acid solution is sprayed onto a chitosan mask base fabric, and a chitosan mask is obtained after drying; Chinese invention patent CN201811631314.6 discloses a gel mask material and a method for preparing the same, wherein the gel fiber is a mixture of alginate fiber, carboxymethyl cellulose fiber, and chitosan fiber, or a blend of several thereof. The above two patents use carboxymethyl chitosan, which is a product of carboxymethylation of chitosan, which is relatively expensive, easily soluble in water to form a viscous solution, and is not suitable for processing with spunlace equipment.

[0005] At the same time, the chitosan masks currently on the market mostly use a spraying method to combine chitosan and the mask base cloth, which is prone to chitosan falling off in the gel state, or the chitosan mask base cloth and the essence are placed separately, which is a complicated process. Since the essence has a certain viscosity and the mask base cloth is relatively thin and soft, when the essence completely soaks the mask base cloth, the folded mask base cloth is bonded more tightly under the action of the essence. The folded wet masks stick to each other and are not easy to unfold. At the same time, due to the skin-smooth properties of the essence, the masks need to be separated carefully, which reduces the consumer's usage experience. Summary of the invention

[0006] The object of the present invention is to provide a gel facial mask and a preparation method thereof, so as to overcome the above-mentioned disadvantages of the existing facial masks.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A gel facial mask comprises a facial mask base cloth composed of acetate fiber, chitosan fiber and other fibers, wherein the content of acetate fiber is 5-98wt%, the content of chitosan fiber is 2-50wt%, and the content of other fibers is 25-90wt%.

[0009] Furthermore, the other fibers include one or two or more of cotton fiber, viscose fiber, cuprammonium fiber, and Tencel fiber.

[0010] Preferably, the weight of the mask base fabric is 20-100 g / m 2 , breaking strength is 25-60N, and water absorption rate is 10-60.

[0011] Preferably, after the gel mask contacts the skin, the gelling process is accelerated.

[0012] Preferably, the gelling time of the gel mask after contacting the skin is controllable and ranges from 20 to 60 seconds.

[0013] Preferably, after water is added to the gel mask, the temperature of the mask decreases, thereby cooling the skin it contacts.

[0014] Preferably, the gel mask is obtained through positive pressure jet treatment and negative pressure air drying treatment.

[0015] The preparation method of the gel mask comprises the following steps:

[0016] (1) Mixing acetate fiber, chitosan fiber and other fibers in proportion, and subjecting the mixture to a hydroentanglement treatment to prepare a mask base fabric;

[0017] (2) Make the solution completely and evenly wet the base fabric;

[0018] (3) Remove excess solution and keep the mask base fabric dry.

[0019] The other fibers include but are not limited to one or two or more of cotton fiber, viscose fiber, cuprammonium fiber, chitosan fiber, and tencel fiber, wherein the content of acetate fiber is 5-98wt%, the content of chitosan fiber is 2-50wt%, and the content of other fibers is 25-90wt%;

[0020] Preferably, the weight of the mask base fabric is 20-100 g / m 2 , breaking strength is 25-60N, water absorption rate is 10-60;

[0021] Preferably, step (2) adopts positive pressure jet treatment.

[0022] Preferably, step (3) adopts negative pressure air drying treatment.

[0023] The positive pressure jet treatment uses pressure penetration to make the solution completely and evenly wet the base fabric, so as to ensure the simultaneity and uniformity of the solution penetration.

[0024] Preferably, the pressure range of the positive pressure jet treatment is 0.5-1.0 MPa, which is adjusted accordingly according to the gram weight of the mask base fabric.

[0025] The negative pressure air drying process is to remove excess solution and keep the mask base fabric dry.

[0026] Preferably, the solution components used in the positive pressure jet include: deionized water, the content is 12-25wt%; one or more of glycolic acid, citric acid, caprylhydroxamic acid, lactic acid, polyglutamic acid, acetic acid, the content is 2-10wt%; two or more of sodium hyaluronate, erythritol, anhydrous ethanol, acetone, a-glucan oligosaccharide, nicotinamide, oligofructose, Dendrobium candidum extract, the content is the balance other than the deionized water and acid, in other words, the total content of the deionized water and acid is 100wt%. Deionized water makes the acidic substance evenly dispersed in the solution.

[0027] Preferably, the content of the acidic substance in the solution is 2-10 wt %.

[0028] Preferably, the pressure of the positive pressure jet treatment is 0.5-1.0 MPa.

[0029] Preferably, the jet velocity of the positive pressure jet treatment is 30-40 m / s.

[0030] Preferably, the temperature of the solution used in the positive pressure jet treatment is 30-55°C.

[0031] Preferably, the negative pressure is -0.03 MPa to -0.06 MPa.

[0032] Preferably, the temperature of the negative pressure air drying process is controlled at 20-40°C.

[0033] Due to the adoption of the above technical solution, the beneficial effects of the present invention include:

[0034] Chitosan can undergo physical cross-linking in a weakly acidic environment and is in a gel state, showing good moisture retention and film-forming properties, so it is necessary to create suitable conditions for chitosan to play a better role. The present invention finds that acetate fiber shows a certain weak acidity in water. Although it does not reach the pH condition for chitosan gelation, it has a positive effect on increasing the speed of chitosan gelation. The present invention adjusts the content of acetate fiber and chitosan fiber, and cooperates with positive pressure jet treatment and negative pressure air drying treatment processes to make the time for chitosan to gel controllable, thereby giving the gel mask higher safety and comfort. The gel mask of the present invention feels soft, and only needs to be soaked in a small amount of drinking pure water to obtain a soft, transparent, water-locking and moisturizing skin care mask when used. The mask has good skin adhesion and is easy to carry.

[0035] The mask starts to gel after contacting water, but after contacting the skin, the body temperature accelerates the gelling process. The present invention adjusts the ratio of acetate fiber and chitosan fiber and the parameters of positive pressure jet treatment and negative pressure air drying treatment, so that the gelling time of the mask after contacting the skin is controllable within a range of 20-60 seconds.

[0036] The gel mask of the present invention has the following characteristics during use: after adding drinking pure water, the acidic substances in the mask are released to form a weakly acidic environment. In the weakly acidic environment, the chitosan fiber absorbs water and swells, and this process is the dissolution process of the chitosan substance. The dissolution process of the substance needs to absorb heat, which has the effect of cooling the skin;

[0037] When in use, the mask fits the facial skin tightly, and the temperature of the human skin promotes further lubrication and absorption of the gel in the mask. It should be noted that the mask of the present invention will gel in large quantities only after contacting the skin, and there is no sticky liquid in the process from folding to unfolding, the separation process is smoother, and the use is more convenient, which greatly improves the consumer experience.

[0038] In addition, the gel mask of the present invention is positively charged and bio-electric, and exhibits strong adsorption to facial residues such as makeup when used. When pure water is added, part of the water can be reduced to small molecules, making the mask more effective in locking water and skin absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram for comparing the Y-shaped and R-shaped cross sections of acetate fiber according to an embodiment of the present invention.

[0040] Figure 2 The present invention is a schematic diagram of the production process of the gel mask. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0042] Example 1

[0043] (1) The cross section of acetate fiber is R-shaped, the fiber length is 38mm, the fineness is 1.3dtex, and the content is 20wt%; the chitosan fiber length is 38mm, the fineness is 2.0dtex, and the content is 15wt%; the tencel fiber length is 38mm, the fineness is 1.7dtex, and the content is 65wt%. The above fibers are weighed in proportion, opened and mixed, carded into a web, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 23.6g / m 2 , breaking strength 32.4N, water absorption rate 23.9.

[0044] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained. The pressure used in the positive pressure jet treatment is 0.6MPa, and the positive pressure jet treatment allows the acidic solution to penetrate into the mask base fabric evenly and simultaneously. The solution composition used is: 25wt% deionized water, 2.8wt% glycolic acid, and 72.2wt% anhydrous ethanol; the solution temperature used is 30°C, and the solution jet flow rate is 35m / s; the temperature of the negative pressure air drying treatment is 40°C, and the negative pressure of the equipment is controlled at -0.04MPa. After adding water to the gel mask, it takes 30s to completely gel.

[0045] Example 2

[0046] (1) The cross section of acetate fiber is Y-shaped, the fiber length is 38mm, the fineness is 1.8dtex, and the content is 5.0wt%; the chitosan fiber length is 38mm, the fineness is 2.0dtex, and the content is 5.0wt%; the cuprammonium fiber length is 38mm, the fineness is 1.4dtex, and the content is 15wt%; the viscose fiber length is 38mm, the fineness is 1.6dtex, and the content is 75wt%. After the above fibers are weighed in proportion, they are opened and mixed, combed into a web, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 30.4g / m 2 , breaking strength 36.7N, water absorption rate 15.9.

[0047] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained, wherein the pressure used for the positive pressure jet treatment is 0.6 MPa, and the solution composition used for the positive pressure jet treatment is: 24.5wt% deionized water, 0.5wt% citric acid, 1.0wt% sodium hyaluronate, 0.5wt% a-glucan oligosaccharide, 73.5wt% anhydrous ethanol; the solution temperature used is 40°C, and the solution jet flow rate is 30m / s; wherein the temperature for the negative pressure air drying treatment is 38°C, and the negative pressure of the equipment is controlled at -0.05MPa. After adding water to the gel mask, the time for complete gelation is 52s.

[0048] Example 3

[0049] (1) The cross section of acetate fiber is Y-shaped, the fiber length is 38mm, the fineness is 1.8dtex, and the content is 15wt%; the chitosan fiber length is 38mm, the fineness is 2.0dtex, and the content is 15wt%; the cotton fiber is Xinjiang long-staple cotton, and the content is 70wt%. The above fibers are weighed in proportion, opened and mixed, combed, web-formed, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 35.5g / m 2 , breaking strength 38.2N, water absorption rate 18.3.

[0050] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained, wherein the pressure used for the positive pressure jet treatment is 0.7 MPa, and the solution composition used for the positive pressure jet treatment is: deionized water 22.5wt%, polyglutamic acid 3.2wt%, sodium hyaluronate 2.0wt%, niacinamide 2.0wt%, oligofructose 2.0wt%, anhydrous ethanol 67.5wt%, octanoyl hydroxamic acid 0.8wt%; the solution temperature used is 45°C, the solution jet flow rate is 40m / s, the temperature of the negative pressure air drying treatment is 35°C, and the negative pressure of the equipment is controlled at -0.04MPa. After adding water to the gel mask, the time for complete gelation is 28s.

[0051] Example 4

[0052] (1) The cross section of acetate fiber is R-shaped, the fiber length is 38mm, the fineness is 1.3dtex, and the content is 28wt%; the chitosan fiber length is 38mm, the fineness is 2.0dtex, and the content is 2wt%; the cotton fiber is Xinjiang long-staple cotton, and the content is 70wt%. The above fibers are weighed in proportion, opened and mixed, combed, web-formed, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 40.3g / m 2 , breaking strength is 40.5N, and water absorption rate is 18.7.

[0053] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained, wherein the pressure used for the positive pressure jet treatment is 0.8 MPa, and the solution composition used for the positive pressure jet treatment is 23.2 wt% deionized water, 1.5 wt% polyglutamic acid, 0.8 wt% a-glucan oligosaccharide, 0.2 wt% Dendrobium officinale extract, 1.5 wt% sodium hyaluronate, 72.3 wt% acetone, and 0.5 wt% lactic acid; the solution temperature used is 45°C, the solution jet flow rate is 40 m / s, the temperature of the negative pressure air drying treatment is 28°C, and the negative pressure of the equipment is controlled at -0.03 MPa. After adding water to the gel mask, the time for complete gelation is 52 s.

[0054] Example 5

[0055] (1) The cross section of the acetate fiber is R-shaped, the fiber length is 38 mm, the fineness is 1.3 dtex, and the content is 98 wt%; the chitosan fiber length is 38 mm, the fineness is 1.8 dtex, and the content is 2 wt%. The above fibers are weighed in proportion, opened and mixed, combed, web-formed, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 20 g / m 2 , breaking strength is 20N, and water absorption rate is 10.

[0056] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained, wherein the pressure used for the positive pressure jet treatment is 0.5 MPa, and the solution composition used for the positive pressure jet treatment is: 24.6 wt% deionized water, 1.4 wt% salicylic acid, 0.8 wt% octanoyl hydroxamic acid, 73 wt% acetone, 0.2 wt% erythritol; the solution temperature used is 40°C, the solution jet flow rate is 40 m / s, the temperature of the negative pressure air drying treatment is 35°C, and the negative pressure of the equipment is controlled at -0.06 MPa. After the gel mask is added with drinking purified water, the time for complete gelation is 29 seconds.

[0057] Example 6

[0058] (1) The cross section of acetate fiber is R-shaped, the fiber length is 38 mm, the fineness is 1.3 dtex, and the content is 45 wt%; the chitosan fiber length is 38 mm, the fineness is 2.0 dtex, and the content is 15 wt%; the tencel fiber length is 38 mm, the fineness is 1.5 dtex, and the content is 40 wt%. The above fibers are weighed in proportion, opened and mixed, combed, web-formed, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 100 g / m 2 , breaking strength is 60N, and water absorption rate is 60.

[0059] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained, wherein the pressure used for the positive pressure jet treatment is 1.0 MPa, and the solution composition used for the positive pressure jet treatment is: 12 wt% deionized water, 4.8 wt% glycolic acid, 2.4 wt% sodium hyaluronate, 5.2 wt% caprylhydroxamic acid, 75.6 wt% anhydrous ethanol, 0.2 wt% erythritol; the solution temperature used is 40°C, the solution jet flow rate is 40 m / s, the temperature of the negative pressure air drying treatment is 40°C, and the negative pressure of the equipment is controlled at -0.04 MPa. After adding water to the gel mask, the time for complete gelation is 60 seconds.

[0060] Example 7

[0061] (1) The cross section of acetate fiber is Y-shaped, the fiber length is 38mm, the fineness is 1.6dtex, and the content is 30wt%; the chitosan fiber length is 38mm, the fineness is 2.0dtex, and the content is 50wt%; the tencel fiber length is 38mm, the fineness is 1.5dtex, and the content is 25wt%. The above fibers are weighed in proportion, opened and mixed, combed, web-formed, and hydroentangled to obtain a mask base fabric. The weight of the mask base fabric is 45g / m 2 , breaking strength is 49N, and water absorption rate is 25.

[0062] (2) After positive pressure jet treatment and negative pressure air drying treatment, a gel mask is obtained, wherein the pressure used for the positive pressure jet treatment is 0.5 MPa, and the solution composition used for the positive pressure jet treatment is: 21wt% deionized water, 2.5wt% citric acid, 0.5wt% a-glucan oligosaccharide, 0.5wt% nicotinamide, 75wt% anhydrous ethanol, and 0.5wt% oligofructose. The solution temperature used is 35°C, the solution jet flow rate is 35m / s, the temperature of the negative pressure air drying treatment is 40°C, and the negative pressure of the equipment is controlled at -0.05MPa. After adding water to the gel mask, the time for complete gelation is 65s.

[0063] Based on the usability and stability of the facial mask to satisfy consumers, the present invention compares the gel effects of different chitosan facial mask base fabrics.

[0064] Comparison of gel effects of different chitosan mask base fabrics

[0065]

[0066]

[0067] Generally, after the chitosan mask comes into contact with essence or water, it will turn into a gel state within 5-10 seconds, with a soft and smooth surface and significant moisturizing effect.

[0068] Conventional freeze-dried masks are made by dipping to completely wet the mask base fabric, and then freeze-dried to obtain the mask. During the development of the present invention, the mask base fabric was treated by dipping, and the mask felt harder and gelled quickly after adding water, but the gel fell off, the mask strength decreased, and holes appeared during the application process. After repeated studies, it was finally found that it was most ideal to treat the mask base fabric by combining positive pressure jet treatment and negative pressure air drying treatment, and it was found during the treatment process that adjusting the solution temperature and the temperature of the negative pressure air drying treatment would make the mask present different effects.

[0069] The present invention uses the combination of acetate fiber and chitosan, as well as positive pressure jet treatment and negative pressure air drying treatment processes, to enable the gel mask to start secondary gelation after being applied to the skin, greatly improving the user experience. After adding water to the mask of the present invention, the acidic substances in the mask are released, forming a weak acid environment, and the chitosan fiber begins to gel. After being applied to the skin, the temperature of the skin accelerates the release and movement speed of the acidic substances in the acetate fiber, thereby enhancing the acidic environment, shortening the gelation time, and obtaining unexpected results.

[0070] The above-mentioned related explanations and descriptions of the embodiments are for the convenience of those skilled in the art to understand and apply the present invention. It is obvious that those familiar with the art can easily make various modifications to these contents and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above-mentioned related explanations and descriptions of the embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A gel mask, characterized in that: After contacting the skin, the gelling process is accelerated and the gelling time is controllable. The gelling time of the gel mask after contacting the skin is in the range of 20-60s. The gel mask is obtained by positive pressure jet treatment and negative pressure air drying treatment; A facial mask base fabric comprising acetate fiber, chitosan fiber and other fibers, wherein the acetate fiber content is 5-98wt%, the chitosan fiber content is 2-50wt%, and the other fibers content is 25-90wt%; The gel mask is prepared by the following steps: (1) Mixing acetate fiber, chitosan fiber and other fibers in proportion, and subjecting the mixture to a hydroentanglement treatment to prepare a mask base fabric; (2) Make the solution completely and evenly wet the base fabric; (3) removing excess solution to keep the mask base fabric dry; The solution components used in the positive pressure jet include: deionized water, the content is 12-25wt%; one or more of glycolic acid, citric acid, caprylhydroxamic acid, lactic acid, polyglutamic acid, acetic acid, the content is 2-10wt%; two or more of sodium hyaluronate, erythritol, anhydrous ethanol, acetone, a-glucan oligosaccharide, nicotinamide, oligofructose, Dendrobium officinale extract, the content is the balance other than the deionized water and acid; The pressure of the positive pressure jet treatment is 0.5-1.0MPa; The jet velocity of the positive pressure jet treatment is 30-40m / s; The temperature of the solution used in the positive pressure jet treatment is 30-55°C; The negative pressure is -0.03MPa to -0.06MPa; The temperature of the negative pressure air drying process is controlled at 20-40°C; The other fibers include one or more of cotton fiber, viscose fiber, cuprammonium fiber and tencel fiber.

2. The gel mask according to claim 1, characterized in that: The weight of the mask base fabric is 20-100 g / m 2 , breaking strength is 25-60N, and water absorption rate is 10-60.

3. The method for preparing the gel mask according to claim 1, characterized in that: The following steps are involved: (1) Mixing acetate fiber, chitosan fiber and other fibers in proportion, and subjecting the mixture to a hydroentanglement treatment to prepare a mask base fabric; (2) Make the solution completely and evenly wet the base fabric; (3) Remove excess solution and keep the mask base fabric dry.

4. The method for preparing the gel mask according to claim 3, characterized in that: Step (2) uses positive pressure jet treatment.

5. The method for preparing the gel mask according to claim 3, characterized in that: Step (3) uses negative pressure air drying.

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