Production device of dry mask sheet, dry mask sheet and preparation method of dry mask sheet

Abstract

The invention discloses a production device of a dry mask sheet, the dry mask sheet and a preparation method of the dry mask sheet, and belongs to the technical field of masks. By improving the position of the feed liquid tank, the rotating speed of the roller and the temperature and controlling the thickness through the roller, rapid and high-quality industrial preparation of the dry mask sheet with the black mud as the main substrate is achieved. The prepared dry mask sheet is uniform, free of air holes, uniform and appropriate in thickness, not obvious in indentation, high in flatness and smooth in surface, and cannot be broken or deformed during uncovering.

Description

Technical Field

[0001] The invention relates to a production device for a facial mask dry sheet, a facial mask dry sheet and a preparation method thereof, and belongs to the technical field of facial masks. Background Art

[0002] With the improvement of living standards, people's demand for skin care products is gradually increasing, and the use of facial masks has become an indispensable part of the skin care process. There are many types of facial masks. At present, they can be divided into stick-type masks, mud-type masks, and peel-off masks according to their materials.

[0003] The mask is a highly concentrated nutrient essence that is adsorbed on a carrier (such as fabric, paper, etc.). It can be applied directly to the face when used. It can quickly replenish the moisture needed by the skin, but due to the fixed shape of the mask, it cannot completely fit everyone's face when used. Mud paste masks are popular among consumers for their deep cleansing and the experience of nourishing the skin with mineral trace elements, but mud pastes are easy to stain clothes during use and are difficult to completely clean. The main ingredients of the tear-off mask are polymers, water and alcohol, which are generally viscous pastes. After applying it evenly on the face for 20 to 30 minutes, a thin film will be formed on the face as the water evaporates. When the film is separated from the face by tearing, the dirt and dandruff on the facial skin will also adhere to the film and be removed together, achieving the effect of cleaning the face. Although the tear-off mask can completely fit the face when used, and has the effect of removing dead skin and oil, the mask feels tight after it dries, and strong tearing can easily cause micro-injuries on the skin surface, and then infection and inflammation.

[0004] Existing dry sheet masks have cracks after being folded, and have problems such as poor toughness, and difficulty in packaging and storage. As a result, the mask packaging will be much larger than the current common mask packaging size, which will lead to higher packaging and transportation costs. At the same time, higher requirements for shelf placement and area during sales will also significantly increase costs. When consumers use it, if there are cracks after folding, it will easily break and cannot be formed, so it cannot be directly applied to the face and the actual function of the mask cannot be achieved.

[0005] On this basis, the inventors have prepared a removable facial mask raw material with black mud as the main matrix (CN115192482A) in the early stage. The dry facial mask sheets prepared by this raw material do not require a mask base, and the dry facial mask can be stored longer than the wet facial mask, is not easy to deteriorate and does not require the addition of preservatives. At the same time, it has excellent toughness, no cracks after folding, and has good oil absorption and moisturizing properties. However, the special ingredients in this raw material result in its high viscosity, making it difficult to achieve industrial production based on existing facial mask production equipment.

[0006] Therefore, developing an apparatus and a preparation method thereof that can quickly and high-quality produce a facial mask raw material with black mud as the main matrix has extremely high practical and economic value. Summary of the invention

[0007] To solve the above problems, the present invention realizes the rapid and high-quality industrial preparation of dry mask sheets with black mud as the main matrix by improving the position of the liquid tank, the speed and temperature of the roller and using a roller to control the thickness. The dry mask sheets prepared by the present invention are uniform, free of pores, and have a uniform and appropriate thickness, with no obvious indentation, and will not break or deform when removed, with high flatness and a smooth surface.

[0008] The first object of the present invention is to provide a production device for a facial mask dry sheet, comprising:

[0009] The liquid tank is located above the drum;

[0010] Roller, used to receive the raw materials of facial mask;

[0011] The first roller is located on the upper side of the drum and is used to control the thickness of the dry mask sheet and block the material to prevent the raw material from overflowing;

[0012] The second roller is located above the drum and below the first roller, and is used to further adjust the thickness of the dry mask sheet and eliminate bubbles;

[0013] The drum, the first roller and the second roller are all placed transversely.

[0014] In one embodiment, the production device further comprises:

[0015] Mold temperature controller, used to heat the roller;

[0016] Winding machine is used to collect the dried and formed facial mask sheets.

[0017] In one embodiment, the angle between the line connecting the center of the first roller and the center of the drum and the diameter of the drum perpendicular to the horizontal is 5 to 30°;

[0018] Preferably, the angle is 10 to 25°;

[0019] The angle between the line connecting the center of the second roller and the center of the drum and the diameter of the drum perpendicular to the horizontal is 15 to 40 degrees;

[0020] Preferably, the angle is 25-40°.

[0021] The first roller is 0.1-1.0 mm away from the drum.

[0022] Preferably, the first roller is 0.3-0.5 mm away from the drum.

[0023] In one embodiment, the first roller and the second roller are located in the rotation direction of the roller, for example: when the roller rotates clockwise, the first roller and the second roller are located above the right side of the roller; when the roller rotates counterclockwise, the first roller and the second roller are located above the left side of the roller.

[0024] In one embodiment, the second roller is 0.1-0.5 mm away from the drum.

[0025] Preferably, the second roller is 0.1-0.3 mm away from the drum.

[0026] In one embodiment, the liquid tank is 10 to 100 mm away from the drum.

[0027] In one embodiment, the length ratio of the liquid tank, the first roller, the second roller and the drum is 0.5-2: 0.5-2.5: 0.5-2.5: 0.5-2.5.

[0028] Preferably, the length ratio of the liquid tank, the first roller, the second roller and the drum is 0.8-2:1-2:1-2:1-2.

[0029] In one embodiment, the diameter ratio of the drum, the first roller and the second roller is 5-15:0.5-1.5:0.5-1.5.

[0030] Preferably, the diameter ratio of the drum, the first roller and the second roller is 8-15:0.8-1.2:0.8-1.2.

[0031] In one embodiment, in the small-scale equipment for producing the facial mask dry sheet, the length of the liquid tank is 280 mm; the length of the first roller and the second roller is 540 mm; and the length of the roller is 320 mm.

[0032] In one embodiment, in the large-scale equipment for producing the facial mask dry sheet, the length of the liquid tank is 1300 mm; the length of the first roller and the second roller is 2000 mm; and the length of the drum is 2000 mm.

[0033] In one embodiment, in the small-scale equipment for producing the facial mask dry sheet, the diameter of the drum is 320 mm; the diameter of the first roller is 30 mm; and the diameter of the second roller is 30 mm.

[0034] In one embodiment, in the large-scale equipment for producing the facial mask dry sheet, the diameter of the drum is 1500 mm; the diameter of the first roller is 100 mm; and the diameter of the second roller is 100 mm.

[0035] In one embodiment, the surfaces of the first roller and the second roller have a special coating material, polytetrafluoroethylene, which can prevent the rollers from sticking to the material body. The effect is that the material body sticks to the rollers without coating, and normal production cannot be performed. The material body sticking to the rollers needs to be removed after 4 hours of production, which greatly improves the production efficiency of dry facial mask sheets.

[0036] In one embodiment, the production device of the facial mask sheet can also have more rollers, which can be 3, 4 or more rollers.

[0037] In one embodiment, the first roller and the second roller in the production device of the facial mask sheet are fixed, or rotatable, or controlled to rotate by a motor to prevent sticking of the material.

[0038] The second object of the present invention is to provide a method for preparing a facial mask dry sheet, comprising the following steps:

[0039] Any of the above-mentioned production devices, wherein the liquid tank is filled with a facial mask matrix;

[0040] The facial mask matrix contacts the roller, the first roller and the second roller in sequence; the roller drives the facial mask matrix, and after being pressed by the first roller and the second roller, the facial mask matrix is ​​flattened into a rectangular shape on the roller; after drying, it is rolled up by the winder to obtain a dry facial mask sheet.

[0041] In one embodiment, the temperature of the drum is maintained at 60-100°C.

[0042] Preferably, the temperature of the drum is maintained at 70-90°C.

[0043] In one embodiment, the rotation speed of the drum is maintained at 0.5-3 rpm.

[0044] Preferably, the rotation speed of the drum is maintained at 0.5-2 rpm.

[0045] In one embodiment, after the facial mask matrix covers the roller, the roller is paused for 0 to 10 minutes, and the dried facial mask sheet is rolled up by a winder.

[0046] In one embodiment, the mask matrix covering the roller refers to the time from when the mask matrix contacts the roller to when the roller carries the mask matrix and rotates one circle (360°).

[0047] In one embodiment, the duration from contacting the roller to rolling up the mask matrix is ​​3 to 7 minutes; wherein, the roller rotation time is 0.33 to 2 minutes, and the roller heating pause time is 3 to 5 minutes.

[0048] The third object of the present invention is to provide a facial mask dry sheet prepared by any of the above-mentioned preparation methods.

[0049] In one embodiment, the thickness of the dry mask sheet prepared by the above preparation method is 0.10 to 0.12 mm;

[0050] Preferably, the thickness of the facial mask sheet is 0.10 mm.

[0051] Beneficial effects of the present invention

[0052] The present invention realizes the rapid and high-quality industrial preparation of a dry mask sheet with black mud as the main matrix by improving the position of the liquid tank, the rotation speed of the drum, the temperature and using a roller to control the thickness. The dry mask sheet prepared by the present invention is uniform, pore-free, and has a uniform and appropriate thickness, with no obvious indentation, and will not break or deform when removed, with high flatness and a smooth surface. Specifically, the dry mask sheet prepared by the present invention has a thickness of 0.1 mm. After 120 minutes of using the dry mask sheet, the increase in skin moisture still reaches 20%, and the reduction in oil and fat reaches 42%, which is better than the dry mask sheet prepared by hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of a production device for a facial mask dry sheet of the present invention.

[0054] Figure 2 This is the dry facial mask sheet prepared in Comparative Example 1.

[0055] Figure 3 This is the facial mask dry sheet prepared in Comparative Example 2.

[0056] Figure 4 This is the facial mask dry sheet prepared in Comparative Example 3.

[0057] Figure 5 This is the facial mask dry sheet prepared in Comparative Example 4.

[0058] Figure 6 This is the dry facial mask sheet prepared in Example 1. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0061] See also Figure 1 The production device 100 of the dry mask sheet used in the embodiment of the present invention includes a liquid tank 200, a roller 300, a first roller 400, a second roller 500, a mold temperature controller 600, a winder 700 and a bracket 800.

[0062] The support 800 includes a support 810, a support 820, a support 830, a support 840, and a support 850; wherein the support 810 supports the liquid tank, the support 820 supports the first roller, the support 830 supports the second roller, the support 840 supports the drum, and the support 850 supports the winder.

[0063] Among them, the liquid tank 200 is located above the drum 300, the first roller 400 is located on the upper side of the drum 300, the second roller 500 is located on the upper side of the drum 300, and the lower side of the first roller 400; the angle between the line connecting the center of the first roller 400 and the center of the drum 300 and the diameter of the drum perpendicular to the horizontal is 20°, and the angle between the line connecting the center of the second roller 500 and the center of the drum 300 and the diameter of the drum perpendicular to the horizontal is 35°.

[0064] The first roller 400 and the second roller 500 are located in the rotation direction of the drum 300, and the drum 300 rotates clockwise, that is, the first roller 400 and the second roller 500 are located on the upper right side of the drum.

[0065] The first roller 400 is 0.4mm away from the drum 300, the second roller 500 is 0.2mm away from the drum 300, the liquid tank 200 is 10mm away from the drum 300, the length of the liquid tank 200 is 280mm, the length of the first roller 400 is 540mm, the length of the second roller 500 is 540mm, and the length of the drum is 320mm.

[0066] The diameter of the roller 300 is 320 mm; the diameter of the first roller 400 is 30 mm; and the diameter of the second roller 500 is 30 mm.

[0067] The mask matrix is ​​loaded into the liquid tank 100, the roller 300 is heated to 80°C, the speed of the roller 300 is adjusted to 1rpm, the roller 300 drives the mask matrix, and passes through the first roller 400 and the second roller 500 in sequence, and the mask matrix is ​​flattened into a rectangular shape on the roller 300; after the mask matrix covers the roller, the roller is paused, and waits for 5 minutes. After the mask matrix is ​​dried, a mask dry sheet with moderate toughness, uniform thickness and smooth surface is obtained, and the dried mask dry sheet is rolled up by the winder 700.

[0068] Furthermore, the surfaces of the first roller 400 and the second roller 500 have a special coating material, polytetrafluoroethylene, which can prevent the rollers from sticking to the material body. The effect is that the material body sticks to the rollers without coating, and normal production cannot be performed. The material body sticking to the rollers only needs to be removed after 4 hours of production, which greatly improves the production efficiency of facial mask sheets.

[0069] Furthermore, the facial mask dry sheet production device 100 may also have more rollers, which may be 3, 4 or more rollers;

[0070] Furthermore, the first roller 400 and the second roller 500 in the facial mask sheet production device 100 are fixed, or rotatable, or controlled to rotate by a motor to prevent sticking of the material.

[0071] Raw materials used in the present invention:

[0072] The raw materials (mask matrix) used in this application have been disclosed in patent CN115192482A, and the formula is shown in Table 1:

[0073] Table 1 Raw material composition

[0074]

[0075]

[0076] Its preparation process is:

[0077] (1) First, add the film-forming agents (polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP)) in phase A to half the amount of water for pre-dissolution.

[0078] (2) Mix the remaining ingredients in phase A with the other half of the water, heat and stir until completely dissolved, add the above part (1), and then slowly add phase B under high-speed stirring until it is evenly dispersed in the system, and maintain stirring at a temperature of 80-85°C for 30 minutes.

[0079] (3) After mixing and dissolving the components of phase C, heat to 80-85°C.

[0080] (4) Add the above (3) into (2), stir rapidly for 30 minutes, and homogenize until the system is evenly dispersed.

[0081] (5) When the temperature drops to 50°C, add phase D and continue stirring to cool to obtain the mask base.

[0082] Detection Methods

[0083] The skin moisture and oil content were tested using the MC 750 skin tester from the German CK company.

[0084] The MC 750 skin tester from German CK company is a multi-performance skin testing platform that can be connected to the moisture test probe (Corneometer CM825) and the oil test probe (Sebumeter SM 815) to quantify the moisture content and oil secretion of the stratum corneum of the skin, assign weights to obtain skin performance data. The specific testing method is as follows:

[0085] 1. Determination of stratum corneum water content

[0086] 1.1 Test Principle

[0087] This method uses the capacitance method to test the moisture content of the stratum corneum of human skin. Its principle is based on the significant difference in the dielectric constants of water and other substances. According to the different water content of the skin, the measured capacitance value of the skin is different. The observed parameters can represent the moisture value of the skin.

[0088] 1.2 Test Method

[0089] This time, 30 volunteers were selected, aged 18-30 years old. Three areas of 3 cm × 3 cm were drawn on the inner side of the arm, and the moisture content of the stratum corneum of the skin was evaluated for the blank sample (no sample was used), the comparative sample (the mask dry sheets obtained in comparative examples 1 to 4 and the mask dry sheets of the same thickness prepared manually) and the example sample (the mask dry sheets obtained in example 1) respectively. Each sample was measured 3 times and the average value was taken to calculate the percentage of moisture content increment for relevant evaluation, as follows:

[0090] (1) The test subjects were selected to have healthy skin and were aged 18-30 years old. After the test subjects were informed and agreed, the water content of the inner side of the arm was measured as the initial value after the test subjects cleaned their arms for 15 minutes.

[0091] (2) No sample was used on the blank area of ​​the subject's arm. The skin of the comparative sample area and the example sample area was wetted with pure water, and then the comparative sample and example mask dry sheets were applied to the skin in an area of ​​3 cm × 3 cm. After the mask was completely dry for 20 minutes, it was gently peeled off and then waited for another 10 minutes. The moisture content of the three areas was measured respectively, and the test was conducted every 30 minutes for 2 hours;

[0092] (3) Test environment: Test environment temperature T = 20 ° C, humidity H = 50;

[0093] (4) Test time: Clean the arm before the test, test the initial moisture content for 15 minutes, and test the moisture content data for 30 minutes, 60 minutes, and 120 minutes respectively;

[0094] (5) Test area: The test area on the arm marked with blank sample, comparative sample, and embodiment sample.

[0095] 1.3 Evaluation of moisturizing effect

[0096] W%=(W2-W1) / W1*100%

[0097] Wherein, W1 is the moisture content of the skin before use; W2 is the moisture content of the skin after use; W% is the percentage increase of the moisture content of the skin before and after use.

[0098] 2. Determination of oil content

[0099] 2.1 Test Principle

[0100] The German CK skin oil tester Sebumeter SM815 was used to evaluate the effectiveness of the oil absorbing paper. The oil content test uses the world-recognized SEBUMETER method, which is based on the principle of photometry. After a 0.1mm thick special matte tape absorbs the oil on the human skin, it will become a translucent tape, and its light transmittance will change. The more oil it absorbs, the greater the light transmittance will be, so the skin oil content can be measured. The biggest advantage is that the test probe is small in size and easy to use, and can be used to test any part of the skin. This is an indirect measurement method for oil gland secretions. The results can be used to distinguish different skin types, making it possible to accurately understand oil changes caused by internal and external reasons.

[0101] 2.2 Test Method

[0102] Thirty volunteers aged 18-30 were selected. Three 3 cm × 3 cm areas were drawn on the forehead, and the skin oil content of the blank sample (no sample was used), the comparative sample (the mask dry sheets obtained in comparative examples 1 to 4 and the mask dry sheets of the same thickness prepared manually) and the example sample (the mask dry sheet obtained in example 1) were evaluated. Each sample was measured 3 times and the average value was taken to calculate the percentage of oil content reduction for relevant evaluation.

[0103] (1) The selected test subjects had healthy skin and were aged 18-30 years old. After the test subjects were informed and agreed, the oil content on their foreheads was measured as the initial value after the test subjects cleansed their faces for 15 minutes.

[0104] (2) No sample was used on the blank area of ​​the subject's forehead. After the skin on the arm was wetted with pure water in the comparative sample area and the example sample area, the comparative sample and the example mask dry sheets were applied to the skin in an area of ​​3 cm × 3 cm. After the mask was completely dry for 20 minutes, it was gently peeled off and then waited for another 10 minutes. The oil content of the three areas was measured respectively, and the test was conducted every 30 minutes for 2 hours;

[0105] (3) Test environment: Test environment temperature T = 20 ° C, humidity H = 50;

[0106] (4) Test time: Cleanse the face before the test, test the initial oil content after 15 minutes, and test the oil content data after 30 minutes, 60 minutes, and 120 minutes respectively;

[0107] (5) Test area: The test area marked with blank, comparative sample, and embodiment sample on the forehead.

[0108] 2.3. Evaluation of oil control effect

[0109] a%=(a0-a1) / a0×100%;

[0110] Wherein, a0-skin oil content before use; a1-skin oil content after use; a%-percentage of reduction in oil content.

[0111] Example 1

[0112] Take 35g of the homogenized mask matrix and put it into the liquid tank, heat the roller to 80℃, adjust the roller speed to 1rpm, and drive the mask matrix through the first roller and the second roller in turn. The mask matrix is ​​flattened into a rectangular shape on the roller; when the mask matrix covers the roller, pause the roller and wait for 5 minutes. After the mask matrix is ​​dried, it is rolled up by a winder to obtain a dry mask sheet with moderate toughness, uniform thickness and smooth surface.

[0113] After testing, the moisture content of the dry mask sheet is 10% to 15%, and the thickness is 0.1mm.

[0114] Example 2

[0115] On the basis of Example 1, the heating roller was changed to 75° C., the roller speed was 2 rpm, and the waiting time was 8 min. The remaining conditions and steps were consistent with Example 1 to prepare a dry facial mask sheet.

[0116] After testing, the water content of the dry mask sheet is 10% to 15%.

[0117] Comparative Example 1

[0118] On the basis of Example 1, the temperature was changed to 70° C., and the remaining conditions and steps were consistent with Example 1 to prepare a dry facial mask sheet.

[0119] Comparative Example 2

[0120] On the basis of Example 1, the temperature was changed to 90° C., and the other conditions and steps were consistent with Example 1 to prepare a dry facial mask sheet.

[0121] Comparative Example 3

[0122] On the basis of Example 1, the rotation speed of the drum was changed to 0.25 rpm, and the other conditions and steps were consistent with Example 1 to prepare a dry facial mask sheet.

[0123] Comparative Example 4

[0124] On the basis of Example 1, the rotating speed of the drum was changed to 10 rpm, and the other conditions and steps were consistent with those of Example 1 to prepare a dry facial mask sheet.

[0125] Comparative Example 5

[0126] On the basis of Example 1, the liquid tank is placed under the drum, and the remaining conditions and steps are consistent with Example 1 to prepare a dry mask sheet.

[0127] The results show that if the mask sheet is too thin, it will easily cause holes when it is torn off from the mask machine; secondly, when the mask sheet is in use, it is easy to dissolve on the face after spraying water (the mask sheet will not take shape on the face, see the trial experience in the picture below), and it cannot be easily removed later.

[0128] Example 3

[0129] The quality of the dry mask sheets prepared in Example 1 (the quality of the dry mask sheets prepared in Example 1 and Example 2 is the same, and Example 1 is used as an example here) and the dry mask sheets prepared in Comparative Examples 1 to 5 were tested.

[0130] The results of Comparative Example 1 are as follows Figure 2 As shown, the results show that when the temperature is 70℃, if the temperature is too low, the mask sheet will dry too slowly, the mask matrix will flow, the material on the surface of the mask machine will be uneven, and it will appear as vertical stripes of liquid. After roller rolling, it will affect the forming of the dry sheet, resulting in an uneven surface of the mask sheet with small bubbles.

[0131] The results of Comparative Example 2 are as follows Figure 3 As shown, the results show that when the temperature is 90°C, the moisture in the mask will evaporate quickly when the temperature is too high, and bubbles will continue to appear on the surface of the mask. Before the bubbles are completely eliminated, the mask sheet is completely dry and has not completely passed through the roller. In the end, a mask with many pores and an uneven surface will be obtained, resulting in many large and dense pores on the surface of the mask sheet, and it is very uneven.

[0132] The result of comparative example 3 is as follows Figure 4 As shown, the results show that if the rotation speed is too slow (<0.5rpm), the surface of the mask matrix will be dry before it completely passes through the roller, making it impossible for the roller to evenly flatten the mask matrix and control the thickness, resulting in a very thick dry mask sheet with a rough and uneven surface.

[0133] The results of Comparative Example 4 are as follows Figure 5 As shown, the results show that if the rotation speed is too fast, before the material body is dried, the excessively fast rotation speed may have a certain throwing force on the mask matrix, affecting the shape of the mask dry sheet, resulting in the roller rolling the mask for too short a time during the rotation process, and the mask has not yet formed a certain thickness, thereby forming irregular strip indentations. In the end, the mask may be too thin or have obvious indentations. In this way, when the mask is torn off from the mask machine, it is easy to be torn or broken because the mask is too thin. When the rotation speed is 10rpm, the mask dry sheet is still very thin and has obvious indentations. It is not easy to break when torn and the flatness is improved, but the mask will be deformed and leave marks.

[0134] The results of Example 1 are as follows Figure 6 As shown, the results show that the surface of the dry mask sheet is dried very evenly without producing pores, and the thickness is uniform and appropriate, the indentation is not obvious, it will not break or deform when torn, and it has high flatness and a smooth surface.

[0135] Example 4

[0136] The facial mask sheets prepared in Example 1 and Comparative Examples 1 to 4 were taken, and the MC 750 skin tester of German CK Company was used to measure the water content and oil secretion of the stratum corneum of the test parts of the subjects before and after using the facial mask sheets, so as to evaluate the moisturizing and oil control effects. A manually prepared facial mask sheet with uniform thickness was used as a control. The results are shown in Table 2.

[0137] Table 2 Effect of dry mask sheet

[0138]

[0139] The results show that the moisturizing and oil-controlling effects of the dry mask sheet prepared in Example 1 are significantly better than those of Comparative Examples 1 to 4, and are also slightly better than those of the dry mask sheet prepared manually. It can be seen that the method for preparing the dry mask sheet in Example 1 has both excellent moisturizing and oil-controlling effects and is suitable for industrial mechanical production.

[0140] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A production device for dry facial mask sheets, characterized in that: include: The liquid tank is located above the drum; Roller, used to receive the raw materials of facial mask; The first roller is located on the upper side of the drum and is used to control the thickness of the dry mask sheet and block the material to prevent the raw material from overflowing; The second roller is located above the drum and below the first roller, and is used to further adjust the thickness of the dry mask sheet and eliminate bubbles; The drum, the first roller and the second roller are all placed transversely.

2. The production device according to claim 1, characterized in that: The production device also includes: Mold temperature controller, used to heat the roller; Winding machine is used to collect the dried and formed facial mask sheets.

3. The production device according to claim 1, characterized in that: The angle between the line connecting the center of the first roller and the center of the drum and the diameter of the drum perpendicular to the horizontal is 5 to 30 degrees; Preferably, the angle is 10 to 25°; The angle between the line connecting the center of the second roller and the center of the drum and the diameter of the drum perpendicular to the horizontal is 15 to 40 degrees; Preferably, the angle is 25 to 40°; The first roller is 0.1-1.0 mm away from the drum; Preferably, the first roller is 0.3-0.5 mm away from the drum; The second roller is 0.1 to 0.5 mm away from the drum; Preferably, the second roller is 0.1-0.3 mm away from the cylinder.

4. The production device according to claim 1, characterized in that: The liquid tank is 10 to 100 mm away from the drum.

5. The production device according to claim 1, characterized in that: The length ratio of the liquid tank, the first roller, the second roller and the drum is 0.5-2: 0.5-2.5: 0.5-2.5: 0.5-2.5; Preferably, the length ratio of the liquid tank, the first roller, the second roller and the drum is 0.8-2:1-2:1-2:1-2.

6. The production device according to claim 1, characterized in that: The diameter ratio of the roller, the first roller and the second roller is 5 to 15: 0.5～1.5：0.5～1.5； Preferably, the diameter ratio of the drum, the first roller and the second roller is 8 to 15: 0.8～1.2：0.8～1.2。 7. A method for preparing a dry facial mask sheet, characterized in that: The steps include: A production device according to any one of claims 1 to 6 is provided, wherein the liquid tank is filled with a facial mask matrix; The facial mask matrix contacts the roller, the first roller and the second roller in sequence; the roller drives the facial mask matrix, and after being pressed by the first roller and the second roller, the facial mask matrix is ​​flattened into a rectangular shape on the roller; after drying, it is rolled up by the winder to obtain a dry facial mask sheet.

8. The preparation method according to claim 7, characterized in that: Maintaining the temperature of the drum at 60-100° C.; Preferably, the temperature of the drum is maintained at 70-90°C; Maintaining the rotation speed of the drum at 0.5-3 rpm; Preferably, the rotation speed of the drum is maintained at 0.5-2 rpm.

9. The preparation method according to claim 7, characterized in that: After the facial mask matrix covers the roller, the roller is paused for 0 to 10 minutes, and the dried facial mask sheet is rolled up by a winder.

10. The dry facial mask sheet prepared by the preparation method according to any one of claims 7 to 9.

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