A silver ion and infrared composite membrane substrate and its preparation process

Abstract

This invention discloses a silver ion and infrared composite membrane material base fabric and its preparation process, comprising a membrane fabric and a silver ion infrared resin slurry printed on the membrane fabric; the silver ion infrared resin slurry comprises the following components: 30%~48% epoxy-modified silicon-containing water-soluble acrylic resin; 5%~15% infrared powder; 0.8%~5% silver ion solution; 2%~5% humectant; and the balance being water. The silver ion and infrared composite membrane material base fabric prepared by this invention utilizes the active redox ability of silver ions, combined with the effect of infrared rays, to remove residual titanium dioxide and other impurities from the skin, deeply cleanse the skin, enhance the skin's self-renewal and metabolic capabilities and nutrient absorption capacity, and provide cleansing and revitalizing care for damaged skin.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic substrates, specifically relating to a silver ion and infrared combined film material base fabric and its preparation process. Background Technology

[0002] Titanium dioxide (TiO2), with its high stability and low cost, has been widely used in the cosmetics industry since the 20th century, becoming one of the main raw materials for cosmetic production. Its primary function is physical concealing, and it is often used in foundation, sunscreen, blush, and face masks. With in-depth medical research on skin cancer and the widespread use of sunscreens, TiO2 has been hailed as the most environmentally friendly sunscreen material. With technological advancements, TiO2 has evolved from micron-scale to nano-scale. Nano-sized TiO2, due to its small particle size and high activity, can both reflect and scatter ultraviolet (UV) radiation, as well as absorb it, thus providing stronger UV blocking capabilities. The smaller the TiO2 particle size, the stronger its concealing ability; existing nano-TiO2 can even absorb infrared light waves. Currently, it is used by major cosmetic brands as a symbol of modern product technology.

[0003] Nanoparticles can penetrate every corner of the skin, but they can also be absorbed into the subcutaneous tissue layer. Once inside the skin, these nano-sized TiO2 particles, due to their strong water-absorbing properties, swell and become trapped, sometimes even adhering to the pore walls, making them difficult for the skin to metabolize and excrete. This can lead to problems such as acne, clogged pores, and even blockages in various cellular biological channels after using cosmetics containing nano-TiO2, including foundation, blush, sunscreen, and concealer, for a period of time. These issues can result in poor skin permeability, dark spots, and a gradual decrease in skin sensitivity to external environmental changes, even hardening of the epidermis, hindering the absorption of moisture and nutrients.

[0004] Existing cosmetic cleansing products mainly use acidic, alkaline, and alcoholic raw materials, which have varying degrees of side effects on the skin. Furthermore, nano-TiO2 is resistant to acids and alkalis, showing little reaction to either, making it difficult to remove from the deep layers of the skin using various facial cleansers or other cleansers. Therefore, there is an urgent need for a deep-cleansing product that can help remove residual TiO2 and other impurities from the skin. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the primary objective of this invention is to provide a silver ion and infrared combined membrane material base cloth that can deeply cleanse the skin, remove residual TiO2 and impurities from the skin, and at the same time play a skin care role.

[0006] Another object of the present invention is to provide a preparation process for the above-mentioned silver ion and infrared combined film material substrate.

[0007] This invention is achieved through the following technical solution:

[0008] A silver ion and infrared composite membrane material base fabric, characterized in that the membrane material base fabric comprises a membrane fabric and a silver ion infrared resin paste printed on the membrane fabric;

[0009] The silver ion infrared resin slurry, by mass percentage, comprises the following components:

[0010] Epoxy-modified silicone-containing water-soluble acrylic resin 30%~48%;

[0011] Infrared powder 5%~15%;

[0012] Silver ion solution 0.8%~5%;

[0013] Moisturizer 2%~5%;

[0014] The remainder is water.

[0015] The epoxy-modified silicon-containing water-soluble acrylic resin has a solid content of 48% to 55%. This epoxy-modified silicon-containing water-soluble acrylic resin exhibits good corrosion resistance, resisting acids, alkalis, and organic solvents such as alcohols. Furthermore, it has good water resistance, maintaining strong adhesion even after water exposure, enabling infrared powder and silver ions to adhere stably to the membrane fabric. On the other hand, the epoxy-modified silicon-containing water-soluble acrylic resin selected in this invention has a curing temperature of 50℃ to 70℃, and it can be cured and set by drying at a lower temperature (below 90℃) (high temperatures will deform or scorch the membrane fabric).

[0016] The infrared powder is selected from any one or more of far-infrared nanoparticles, far-infrared ceramic powder, or tourmaline powder. The infrared powder emits infrared wavelengths from 1.5μm to 1500μm, with an emissivity of 78% to 92%; the infrared powder has a mesh size of 1200 to 2500 mesh. Current research by dermatologists worldwide indicates that 1.5μm to 400μm is the most suitable wavelength range for skin absorption, promoting skin health; impurities in the skin primarily absorb infrared radiation above 400μm; the light absorption capacity of TiO2 is related to its surface area, and nano-sized TiO2 can generally absorb infrared wavelengths above 500μm.

[0017] The silver ion solution has a silver ion concentration of 4000 ppm to 6000 ppm; the silver ion is Ag. + Ag 2+ or Ag 3+ Preferably, the silver ion solution is Ag. 2+ Solution. Ag 2+The reduction potential at 25℃ is 1.987V, indicating a high-valence silver ion reduction potential, making it an active silver ion. The silver ion solution extracted by high-temperature electrolysis is colorless, odorless, transparent, and free of impurities, and can be directly applied to skin and mucous membranes in contact with the human body.

[0018] Nanoscale titanium dioxide can absorb ultraviolet and far-infrared rays. Titanium dioxide residue in the skin absorbs moisture, causing structural changes on its surface. Under infrared light irradiation, the valence band electrons of TiO2 are excited to the conduction band, and electrons and holes migrate to the TiO2 surface, creating electron-hole pairs and forming a surface-charged TiO2. Simultaneously, with the action of infrared light, active silver ions rapidly penetrate the skin and react with the surface-charged TiO2, forming an active oxide layer on the TiO2 surface. Infrared rays also heat skin cells, dilate capillaries, accelerate blood circulation, and enhance the skin's self-metabolism. Driven by silver ions, the skin can quickly excrete titanium dioxide residue and other oxidized peroxides.

[0019] To achieve better cleaning of residual titanium dioxide and other impurities on the skin, preferably, based on the total mass of the silver ion infrared resin slurry, the infrared powder is 6%~9.5% and the silver ion solution is 3.5%~4.5%.

[0020] The moisturizer is selected from any one or more of alcohol-based moisturizers, natural moisturizing factors, or amino acid-based moisturizers; preferably, the moisturizer is selected from alcohol-based moisturizers; the alcohol-based moisturizer is selected from any one or more of glycerol, butylene glycol, polyethylene glycol, propylene glycol, ethylene glycol, xylitol, polypropylene glycol, and sorbitol.

[0021] Depending on the color requirements of the product pattern, the silver ion infrared resin paste, by weight percentage, also includes 5% to 10% colorant; the colorant is 500 to 800 mesh. This invention allows for the selection of different colors of colorant, such as red, gold, or silver, as needed. The colorant can be environmentally friendly.

[0022] The membrane fabric is a non-woven fabric, a knitted fabric, or a woven fabric; the water is deionized water.

[0023] This invention also provides a process for preparing the above-mentioned silver ion and infrared combined film substrate, comprising the following steps:

[0024] (1) Weigh each component according to the ratio, add epoxy-modified silicon-containing water-soluble acrylic resin to water, and stir at 80~100℃ for 1~2.5 hours; stirring speed is 900~1200 rpm;

[0025] (2) Add infrared powder and humectant, and stir at 50~80℃ for 20~30 minutes; stirring speed is 900~1200 rpm;

[0026] (3) Add silver ion solution slowly while stirring, and stir for 20-30 minutes to obtain silver ion infrared resin slurry; stirring speed is 600-1000 rpm;

[0027] (4) The silver ion infrared resin paste obtained in step (3) is printed on the film cloth using a rotary screen printing process; the rotary screen mold is 600~1200 mesh and the thickness is 1mm~1.2mm;

[0028] (5) Dry at a temperature of 60~90℃ to obtain a silver ion and infrared composite film base.

[0029] The preparation process can be carried out by stirring with a high-speed disperser; the steps (1) and (2) can be carried out by stirring and mixing in an electrically heated reactor; the rotary screen printing process generally uses a nickel screen mold.

[0030] The present invention also provides the application of the above-mentioned silver ion and infrared combined film material base cloth, specifically for use in face masks, eye masks or body patches.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] This invention produces a silver ion and infrared composite membrane material base fabric by printing a paste comprising infrared powder, silver ions, and epoxy-modified silicon-containing water-soluble acrylic resin components onto a membrane fabric. Utilizing the active redox capabilities of silver ions, combined with the effect of infrared rays, it can remove residual titanium dioxide and other impurities from the skin; deeply cleanse the skin, enhance the skin's self-renewal and metabolic capabilities and nutrient absorption capacity, and provide cleansing and revitalizing care for damaged skin.

[0033] Skin care products such as face masks and eye masks made from the silver ion and infrared combined membrane material base fabric of the present invention do not require the addition of any special cleansing formula or essence formula with special effects. They can be used simply by soaking them in water, while achieving the required skin care and cleansing effects. They are convenient to use and save on production costs. Detailed Implementation

[0034] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0035] The raw materials used in the embodiments and comparative examples are described below, but are not limited to these materials. All the following raw materials are commercially available:

[0036] Epoxy-modified silicone-containing water-soluble acrylic resin: solid content 52%;

[0037] Infrared powder: Far-infrared nano powder, 1500 mesh;

[0038] Silver ion solution: Ag 2+ The concentration is 5000 ppm;

[0039] Moisturizer: Glycerol;

[0040] Pigment: Red environmentally friendly pigment, 600 mesh;

[0041] Water: Deionized water.

[0042] Preparation process of the examples and comparative examples:

[0043] (1) Weigh each component according to the proportions in Table 1, add epoxy-modified silicon-containing water-soluble acrylic resin and deionized water to an electrically heated reactor, stir at 100°C for 1 hour; stirring speed 1000 rpm; cool down to 30~50°C;

[0044] (2) Add infrared powder, humectant and colorant, and stir at 50°C for 20 minutes; stir at 1000 rpm; then put the material into a large bucket;

[0045] (3) Using a high-speed disperser, slowly add silver ion solution while stirring, and stir for 20 minutes to obtain silver ion infrared resin slurry; stirring speed is 900 rpm;

[0046] (4) The silver ion infrared resin paste obtained in step (3) is printed on the non-woven fabric using a rotary screen printing process; the rotary screen mold is 1000 mesh and a nickel screen with a thickness of 1 mm is used.

[0047] (5) Dry at 60°C to obtain a silver ion and infrared composite membrane base.

[0048] The silver ion and infrared composite membrane material base fabric obtained above was used to prepare a facial mask product, and efficacy tests were conducted. The specific testing methods are as follows:

[0049] (1) Test population: volunteers who have been using mid-to-high-end cosmetics and sunscreens from brands such as Guerlain, Estée Lauder, Lancôme, Dior, and Shiseido for many years; volunteers were randomly selected to form 8 test groups, namely: Example 1 membrane cloth group, Example 2 membrane cloth group, Example 3 membrane cloth group, Example 4 membrane cloth group, Example 5 membrane cloth group, Comparative Example 1 membrane cloth group, Comparative Example 2 membrane cloth group, and blank membrane cloth group, with 20 people in each group.

[0050] (2) Testing cycle: 1 month 4 weeks, once a week. Based on the skin regeneration cycle of 28 to 30 days, a 1-month testing cycle was set. After weekly mask cleansing tests, the skin health was finally evaluated based on the test results.

[0051] (3) Test method: First, clean the surface skin of the face with pure water, then use a mask sheet to apply pure water to the face for 10-15 minutes to deeply cleanse the face. After the cleansing mask is applied, wait for 5 minutes and use the Antera skin tester to test.

[0052] (4) Testing Instrument: The tester used was the Antera handheld testing device manufactured in Ireland. The handheld probe of the testing device emitted different wavelengths of light. Under white light, it could clearly distinguish various wrinkles and pores; under UV light, it could clearly see deep pigmentation and the presence of various nutrients such as collagen and elastin; under red light, it could clearly see blood vessel morphology and detect sensitive skin. This testing device could irradiate the skin with light sources of different wavelengths, and then obtain various skin data through software data analysis:

[0053] Epidermal water loss (TEWL): This reflects the skin's moisturizing effect and reveals the state of repair or damage to the skin's protective barrier. The TEWL value of healthy skin ranges from 5 to 10 g / m². 2 When the skin is damaged, the TEWL value will increase.

[0054] Electrical conductivity: Electrical conductivity is used to assess the moisture content of the skin. The purer the moisture in the skin, the lower the electrical conductivity.

[0055] Skin surface pH value: The pH range of healthy skin is 4.0~5.7.

[0056] Skin mechanical properties (skin elasticity): Using a handheld Antera instrument with a probe bearing a weight of 360 grams, the skin's rebound and firmness were tested. A faster rebound time indicates better skin elasticity; a greater rebound force indicates healthier skin. The elasticity range of healthy skin is 0.0005~0.001 N / cm / second.

[0057] Skin color: The color analyzer uses the L*A*B* color space method to measure skin color.

[0058] L* has a color range of white to black, including various impurities and natural skin pigments;

[0059] A* has a color range of red to green, representing substances such as capillaries and proteins in the skin;

[0060] B* covers a range from blue to yellow, and includes shadows caused by deep skin lesions and allergies, such as erythema.

[0061] (5) Test data analysis: Record the data of each group for each test, and perform statistical analysis after one test cycle.

[0062] TEWL value, conductivity, and skin surface pH: are the average values ​​of test data from 20 people in each group;

[0063] Skin elasticity: The range based on statistical data from tests conducted on 20 individuals in each group;

[0064] Skin color: The range after statistical analysis of test data from 20 people in each group;

[0065] Based on the test data, the skin health was evaluated, and the number of people in each test group with excellent skin health was counted to evaluate the effectiveness of the mask sheet product.

[0066] Table 1: Slurry Formulation Components of Examples and Comparative Examples, by Mass Percentage

[0067] Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Epoxy-modified silicone-containing water-soluble acrylic resin 48% 47% 39% 34.5% 36% 34.5% 34.5% Infrared powder 15% 12.5% 10% 7.5% 5% 7.5% - Silver ion solution 0.8% 1.5% 3% 4% 5% - 4% Moisturizer 5% 4% 3% 2% 2% 2% 2% Pigment 5% 5% 5% 5% 5% 5% 5% water 26.2% 30% 40% 47% 47% 51% 54.5% Percentage sum 100% 100% 100% 100% 100% 100% 100%

[0068] The membrane base fabrics prepared from the formulations in Table 1 (examples and comparative examples) were used to prepare facial mask products for efficacy testing. Blank membrane fabrics (non-woven fabrics without infrared silver ion resin paste) were used for comparison. Based on the test data, the skin health was evaluated, and the number of people with excellent skin health in each test group was counted. The test results are shown in Table 2.

[0069] Table 2: Test data of Examples 1-5, Comparative Examples 1-2 and blank membrane fabric group

[0070] Example 1 Example 2 Example 3 Example 4 <![CDATA[TEWL value (g / m 2 ).]]> 8 7.5 7.2 7 Electrical conductivity (μs / m) 90 80 50 30 skin surface pH 5.2 5 5 4.8 Skin elasticity (N / cm / second) 0.0004~0.0005 0.0006~0.0008 0.0008~0.001 0.0008~0.0012 Skin tone L* 30~35% 22~32% 19~28% 15~22% Skin tone A* 23~25% 25~32% 22~30% 23~38% Skin tone B* 5~8% 4~7% 3~6% 3~5% The number of people in the test group with excellent and healthy skin 12 people 12 people 16 people 18 people

[0071] See Table 2:

[0072] Example 5 Comparative Example 1 Comparative Example 2 Blank membrane cloth <![CDATA[TEWL value (g / m 2 ).]]> 8 8.5 8 15 Electrical conductivity (μs / m) 60 20000 5000 50000 skin surface pH 4.5 5 5 6.5 Skin elasticity (N / cm / second) 0.0006~0.0008 0.0005~0.0007 0.0005~0.0007 0.0001~0.0002 Skin tone L* 17~25% 25~32% 20~28% 35~48% Skin tone A* 23~35% 20~28% 22~30% 10~18% Skin tone B* 6~9% 5~8% 5~8% 12~15% The number of people in the test group with excellent and healthy skin 15 people 8 people 9 people 5 people

[0073] Comparing Examples 1-5 with the blank mask sheet group, it is evident that the skin conductivity significantly decreased after using the mask sheet formulated in this invention. This indicates that by combining infrared rays and silver ions in the mask sheet, this invention effectively cleanses residual titanium dioxide and other impurities from the skin, providing deep cleansing. Furthermore, it was observed that using the mask sheet formulated in this invention significantly reduced epidermal moisture loss, brought the skin's surface pH to a healthy range, enhanced skin elasticity, and reduced pigmentation, demonstrating that the mask sheet of this invention can simultaneously repair and improve the skin environment. The test results show that the number of individuals achieving excellent skin health in the examples was significantly higher than in the blank mask sheet group.

[0074] As can be seen from the comparison between Example 4 and Comparative Examples 1 and 2, the conductivity of Comparative Examples 1 and 2, which added infrared powder or silver ion solution alone, was still relatively high and could not achieve the required cleaning effect; moreover, the number of people with skin that achieved excellent health was significantly less than that of the Example group.

Claims

1. A silver ion and infrared ray combined film material base cloth for removing residual titanium dioxide in the skin, characterized by, The membrane material base fabric includes a membrane fabric and a silver ion infrared resin paste printed on the membrane fabric; The silver ion infrared resin slurry, by mass percentage, comprises the following components: Epoxy-modified silicone-containing water-soluble acrylic resin 30%~48%; Infrared powder 5%~15%; Silver ion solution 0.8%~5%; Moisturizer 2%~5%; The remainder is water; The infrared powder is of 1200~2500 mesh; The silver ion is Ag + , Ag 2+ , or Ag 3+ .

2. The silver ion and infrared ray combined film material base cloth for removing residual titanium dioxide in the skin according to claim 1, characterized in that, The curing temperature of the epoxy-modified silicon-containing water-soluble acrylic resin is 50℃~70℃; the solid content of the epoxy-modified silicon-containing water-soluble acrylic resin is 48%~55%.

3. The silver ion and infrared ray combined film material base cloth for removing residual titanium dioxide in the skin according to claim 1, characterized in that, The infrared powder is selected from any one or more of far-infrared nanopowder, far-infrared ceramic powder, or tourmaline powder.

4. The silver ion and infrared ray combined film material base cloth for removing residual titanium dioxide in the skin according to claim 1, characterized in that, The infrared powder emits infrared wavelengths of 1.5μm to 1500μm and has an emissivity of 78% to 92%.

5. The silver ion and infrared ray combined film material base cloth for removing residual titanium dioxide in the skin according to claim 1, characterized by, The silver ion solution has a silver ion concentration of 4000ppm to 6000ppm.

6. The silver ion and infrared combined membrane base fabric for removing residual titanium dioxide from the skin according to claim 1, characterized in that, The silver ion is Ag 2+ .

7. The silver ion and infrared combined membrane base fabric for removing residual titanium dioxide from the skin according to claim 1, characterized in that, Based on the total mass of the silver ion infrared resin slurry, the infrared powder accounts for 6% to 9.5%, and the silver ion solution accounts for 3.5% to 4.5%.

8. The silver ion and infrared combined membrane base fabric for removing residual titanium dioxide from the skin according to claim 1, characterized in that, The moisturizer is selected from any one or more of alcohol-based moisturizers, natural moisturizing factors, or amino acid-based moisturizers.

9. The silver ion and infrared combined membrane base fabric for removing residual titanium dioxide from the skin according to claim 8, characterized in that, The humectant is selected from alcohol-based humectants, wherein the alcohol-based humectant is selected from any one or more of glycerol, butylene glycol, polyethylene glycol, propylene glycol, hexanediol, xylitol, polypropylene glycol, and sorbitol.

10. The silver ion and infrared combined membrane base fabric for removing residual titanium dioxide from the skin according to claim 1, characterized in that, The silver ion infrared resin slurry, by mass percentage, also includes 5% to 10% colorant; the colorant is 500 to 800 mesh.

11. The silver ion and infrared combined membrane base fabric for removing residual titanium dioxide from the skin according to claim 1, characterized in that, The membrane fabric is a non-woven fabric, a knitted fabric, or a woven fabric; the water is deionized water.

12. The preparation process of the silver ion and infrared combined membrane substrate for removing residual titanium dioxide from the skin according to any one of claims 1 to 11, characterized in that, Includes the following steps: (1) Weigh each component according to the ratio, add epoxy-modified silicon-containing water-soluble acrylic resin to water, and stir at 80~100℃ for 1~2.5 hours; stirring speed is 900~1200 rpm; (2) Add infrared powder and humectant, and stir at 50~80℃ for 20~30 minutes; stirring speed is 900~1200 rpm; (3) Add silver ion solution slowly while stirring, and stir for 20-30 minutes to obtain silver ion infrared resin slurry; stirring speed is 600-1000 rpm; (4) The silver ion infrared resin paste obtained in step (3) is printed on the film cloth using a rotary screen printing process; the rotary screen mold is 600~1200 mesh and the thickness is 1mm~1.2mm; (5) Dry at a temperature of 60~90℃; to obtain a silver ion and infrared combined membrane base for removing residual titanium dioxide from the skin.