Beauty mask

Abstract

The purpose of the present invention is to provide a beauty mask which maintains an acid and a carbonate in an unreacted stable state before use of the beauty mask and generates carbon dioxide gas with good followability to the uneven shape of the face of a user. A beauty mask 1 according to the present invention comprises: a base sheet 2 formed of a single nonwoven fabric; and an acid and a carbonate. The acid and the carbonate are disposed on the base sheet 2 so as not to overlap each other on an inner surface 1b, which is one main surface of the base sheet 2, and / or an outer surface 1a which is a main surface on the opposite side to the inner surface 1b.

Description

Beauty Mask

[0001] The present invention relates to a beauty mask that generates carbon dioxide gas, which is effective for skin beauty.

[0002] It has been known that carbon dioxide gas has beneficial beauty effects (hereinafter referred to as "beauty effects"). Specifically, carbon dioxide gas acts on cells near the skin, dilating blood vessels and promoting blood flow and oxygen supply to cells. Beauty masks (hereinafter referred to as "beauty masks" or "masks") that generate carbon dioxide gas when worn on the user's face are also known. These masks utilize the beauty effects of carbon dioxide gas while also enhancing the effects of beauty ingredients such as beauty serums.

[0003] In such masks, carbon dioxide gas is generated by the reaction between acid and carbonate, but it is important that the acid and carbonate remain unreacted before use. In this regard, a technique has been proposed in which a mask is made up of three nonwoven fabrics, with the first nonwoven fabric containing an acid and the second nonwoven fabric containing a carbonate, and the third nonwoven fabric is placed between the first and second nonwoven fabrics. When the user impregnates the mask with a beauty serum or the like during use, the acid and carbonate react to generate carbon dioxide gas (see, for example, Patent Document 1).

[0004] Patent No. 5689513

[0005] As in Patent Document 1, by forming a mask using multiple layers of nonwoven fabric, it is possible to prevent the acid and carbonate from reacting and maintain a stable, unreacted state before use. However, using multiple layers of nonwoven fabric makes the mask thicker, which reduces its ability to conform to the contours of the user's face and reduces its adhesion. As a result, the beauty benefits of the carbon dioxide gas and the beauty serum are reduced.

[0006] Based on the above, the present invention provides a beauty mask that generates carbon dioxide gas, which maintains the acid and carbonate in a stable, unreacted state before use and has good conformability to the contours of the user's face.

[0007] The first invention is a beauty mask that generates carbon dioxide gas, and includes a base sheet formed from a single piece of nonwoven fabric, an acid, and a carbonate, wherein the acid and the carbonate are arranged on the base sheet in a manner that they do not overlap each other on the inner surface, which is one of the main surfaces of the base sheet, and / or on the outer surface, which is the main surface opposite the inner surface.

[0008] According to the configuration of the first invention, the acid and carbonate are arranged in a non-overlapping manner on the inner and / or outer surfaces of a base sheet composed of a single nonwoven fabric. Therefore, when a liquid cosmetic composition such as a cosmetic lotion or serum (hereinafter referred to as the "cosmetic composition") is not applied to the base sheet, the acid and carbonate remain in an unreacted, stable state. When a user applies the cosmetic composition to the base sheet, the acid and carbonate react, generating carbon dioxide gas. Because the base sheet of the first invention is composed of a single nonwoven fabric, it is thinner than a cosmetic mask in which the acid and carbonate are arranged on multiple nonwoven fabrics separately. This allows the cosmetic mask to conform well to the contours of the user's face.

[0009] The second invention is a beauty mask having the configuration of the first invention, wherein a blank region in which neither the acid nor the carbonate is disposed is formed on the inner surface and / or the outer surface between an acid region in which the acid is disposed and a carbonate region in which the carbonate is disposed.

[0010] According to the second aspect of the invention, the acid region and the carbonate region are reliably separated by the blank region, so that the carbonate and the acid are reliably maintained in a stable unreacted state.

[0011] A third invention is a cosmetic mask having the configuration of the first invention or the configuration of the second invention, wherein the acid and the carbonate are arranged in relatively larger amounts in positions closer to the inner surface in the thickness direction of the base sheet than in positions farther from the inner surface.

[0012] According to the third aspect of the present invention, the acid and carbonate are disposed in greater amounts closer to the inner surface of the base sheet than further from the inner surface. Therefore, when the cosmetic composition is applied to the inner surface of the base sheet, a large amount of carbon dioxide gas is generated relatively quickly near the user's face. As a result, the cosmetic mask quickly exerts its beauty effects due to the carbon dioxide gas.

[0013] A fourth invention is a cosmetic mask having the configuration of the first invention or the configuration of the second invention, wherein the acid and the carbonate are arranged in relatively larger amounts in positions closer to the outer surface in the thickness direction of the base sheet than in positions farther from the outer surface.

[0014] According to the fourth aspect of the invention, since the acid and carbonate are disposed in large amounts near the outer surface, when the cosmetic composition is applied to the inner surface, the relatively small amount of acid and carbonate disposed farther from the outer surface, i.e., closer to the inner surface, react first to generate a relatively small amount of carbon dioxide, providing a relatively weak stimulus to the user's face and gradually activating the cells near the user's face. Then, after a time delay, when the liquid reaches the position closer to the outer surface, the relatively large amount of acid and carbonate disposed closer to the outer surface react to generate a relatively large amount of carbon dioxide, sufficiently activating the cells near the user's face. In other words, the cosmetic mask can gradually exert its cosmetic effect on the cells near the user's face.

[0015] A fifth invention is a cosmetic mask having the configuration of the first or second invention, in which when the amount of the acid in the proportion for most effectively generating carbon dioxide by the reaction of the acid and the carbonate is defined as a first amount, the amount of the acid placed in the mask is less than the first amount.

[0016] Generally, cosmetic compositions such as lotions and serums are acidic. In this regard, the cosmetic mask of the fifth invention allows the acidic components of the cosmetic composition to have the function of an acid, thereby reducing the amount of acid relative to the theoretically required ratio of acid to carbonate for generating carbon dioxide. This reduces the amount of acid used in the cosmetic mask, contributing to resource conservation and reducing the manufacturing costs of the cosmetic mask.

[0017] The sixth invention is a cosmetic mask having the configuration of the first or second invention, wherein a restricting layer that restricts the passage of liquid and gas is disposed on the outer surface.

[0018] According to the configuration of the sixth invention, carbon dioxide gas is not discharged from the outer surface to the outside, so a relatively large amount of carbon dioxide gas remains between the beauty mask and the user's face, allowing the cells in the vicinity of the user's face to continue to be activated.

[0019] The seventh invention is the first or second invention, in which the time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and in a closed system with a capacity of 1000 milliliters (ml), the total amount of the acid placed in the acid region and the total amount of the carbonate region are calculated. When the concentration of the carbon dioxide gas generated by the total amount of carbonate added is taken as the maximum concentration, and the total area of ​​the acid region and the total area of ​​the carbonate region are constant, the shortest distance between adjacent acid regions and carbonate regions is defined as the distance at which, in measuring the cumulative amount of carbon dioxide gas generated from the cosmetic mask in a closed system, the concentration of the carbon dioxide gas generated from the cosmetic mask reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to be generated until the wearing time t3.

[0020] The inventors of the present invention have come up with a technical idea for controlling the amount of carbon dioxide gas generated over time (time series) from the start of use of a beauty mask to the end of use. Specifically, they have come up with the technical idea of ​​generating a carbon dioxide gas at a concentration close to the maximum concentration at the initial stage (initial time t1) when the user starts using the beauty mask, and then continuing to generate carbon dioxide gas until the end of use. According to the configuration of the seventh invention, the carbon dioxide gas concentration reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and then continues to generate carbon dioxide gas until the wearing time t3, thereby realizing the above technical idea.

[0021] The eighth invention is a method for determining the time series of the first or second invention, in which the time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and the total amount of the acid placed in the acid region and the total amount of the carbonate placed in the carbonate region in a closed system with a volume of 1000 milliliters (ml) is used to determine the time series of the cosmetic composition. When the concentration of the carbon dioxide gas generated is the maximum concentration and the total area of ​​the acid region and the total area of ​​the carbonate region are constant, the shortest distance between adjacent acid regions and carbonate regions is defined as the distance over which the concentration of the carbon dioxide gas generated between the start time t0 and the initial time t1 is 70% to 90% of the maximum concentration (first concentration), the concentration of the carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is 15% to 30% of the maximum concentration (second concentration), the sum of the first concentration and the second concentration is less than 100%, and carbon dioxide gas generation continues until the wearing time t3.

[0022] According to the eighth aspect of the present invention, the shortest distance between adjacent acid and carbonate regions is set so that the concentration of carbon dioxide gas generated from the beauty mask between the start time t0 and the initial time t1 is between 70% and 90% of the maximum concentration. The distance is set so that the concentration of carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is between 15% and 30% of the maximum concentration. Furthermore, the distance is set so that carbon dioxide gas is continuously generated from the beauty mask until the wearing time t3.

[0023] The ninth invention is a configuration of the first or second invention, wherein the time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the intermediate time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and the amount of the acid placed in the acid region in a closed system with a volume of 1000 milliliters (ml) is When the concentration of the carbon dioxide gas generated by the total amount of the acid and the total amount of the carbonate placed in the carbonate region is taken as the maximum concentration and the shortest distance between the adjacent acid region and carbonate region is constant, the width of the acid region and the width of the carbonate region are defined as the width within which the cumulative concentration of the carbon dioxide gas generated from the cosmetic mask in a closed system reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to be generated until the wearing time t3.

[0024] According to the ninth aspect of the present invention, the amount of carbon dioxide gas generated from the beauty mask can be controlled over time by adjusting the width of the acid region and the width of the carbonate region (hereinafter referred to as "each width"). That is, the carbon dioxide gas concentration in the closed system is set to be 70% to 90% of the maximum concentration between the start time t0 and the initial time t1, and 85% to 95% of the maximum concentration between the initial time and the intermediate time t2. Furthermore, each width is set so that carbon dioxide gas is continuously generated from the beauty mask until the wearing time t3.

[0025] The tenth invention is a method for determining a time series of a cosmetic mask according to the first or second invention, wherein a time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a start time t0, a time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, a time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and a time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and a time series of a cosmetic mask according to the total amount of the acid placed in the acid region and the total amount of the carbonate placed in the carbonate region is determined in a closed system having a volume of 1000 milliliters (ml). the concentration of the carbon dioxide gas generated between the start time t0 and the initial time t1 is 70% to 90% of the maximum concentration (first concentration), the concentration of the carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is 15% to 30% of the maximum concentration (second concentration), the sum of the first concentration and the second concentration is less than 100%, and the width of the acid region and the width of the carbonate region are defined as widths within which the generation of carbon dioxide gas continues until the wearing time t3, when the concentration of the carbon dioxide gas generated between the start time t0 and the initial time t1 is set to a maximum concentration and the shortest distance between the adjacent acid region and the carbonate region is constant.

[0026] According to the configuration of the tenth invention, the concentration of carbon dioxide gas generated from the beauty mask between the start time t0 and the initial time t1 is 70% or more and 90% or less of the maximum concentration, and the concentration of carbon dioxide gas generated from the beauty mask between the initial time t1 and the intermediate time t2 is 15% or more and 30% or less of the maximum concentration, and the width of the acid region and the width of the carbonate region are specified so that carbon dioxide gas is continuously generated thereafter until the wearing time t3.

[0027] The eleventh invention is a configuration of the first or second invention, wherein the time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and the time before being placed in the acid region in a closed system with a volume of 1000 milliliters (ml) is defined as a time when the liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a wearing time t3, the time between the start time t0 and the wearing time t3 is defined as an intermediate time t2 ... When the concentration of the carbon dioxide gas generated by the total amount of the acid and the total amount of the carbonate placed in the carbonate region is defined as the maximum concentration, the shortest distance between the adjacent acid region and the carbonate region, the width of the acid region, and the width of the carbonate region are defined as the width within which the cumulative concentration of the carbon dioxide gas generated from the cosmetic mask in a closed system reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to be generated until the wearing time t3.

[0028] According to the eleventh aspect of the present invention, the width of the acid region, the width of the carbonate region, and the shortest distance between the acid region and the carbonate region are specified as widths that control the manner in which carbon dioxide gas is generated from the cosmetic mask. That is, the widths are specified so that the concentration of carbon dioxide gas generated from the cosmetic mask in a closed system reaches 70% to 90% of the maximum concentration at an initial time t1 and reaches 85% to 95% of the maximum concentration at an intermediate time t2. Furthermore, the widths and shortest distances are specified so that carbon dioxide gas is continuously generated until the wearing time t3 is reached.

[0029] The beauty mask of the present invention can provide a beauty mask that generates carbon dioxide gas, which maintains the acid and carbonate in a stable, unreacted state before use and has good conformability to the uneven shape of the user's face.

[0030] 1 is a diagram showing the outer surface of a cosmetic mask according to a first embodiment of the present invention. FIG. 2 is a diagram showing the inner surface of a cosmetic mask. FIG. 3 is a diagram conceptually showing a cross section of a cosmetic mask. FIG. 4 is a diagram conceptually showing an enlarged portion of the inner surface of a cosmetic mask. FIG. 5 is a diagram showing the manner in which carbon dioxide gas is generated from a cosmetic mask. FIG. 6 is a schematic diagram showing a user's face. FIG. 7 is a schematic diagram showing a state in which a cosmetic mask is worn on a user's face. FIG. 8 is a schematic diagram showing a state in which a cosmetic mask is worn on a user's face. FIG. 9 is a diagram showing a test piece for Experiment 1. FIG. 10 is a diagram showing the test results of Experiment 1. FIG. 11 is a diagram showing a test piece for Experiment 2. FIG. 12 is a diagram showing the test results of Experiment 2. FIG. 13 is a diagram showing a test piece for Experiment 3 according to a second embodiment. FIG. 14 is a diagram showing a test piece for Experiment 3 according to the second embodiment. FIG. 15 is a diagram showing the test results of Experiment 3. FIG. 16 is a diagram showing a test piece for Experiment 4. FIG. 17 is a diagram showing a test piece for Experiment 5 according to a third embodiment. FIG. 18 is a diagram showing the test results of Experiment 5. FIG. 19 is a diagram showing the inner surface of a cosmetic mask according to a fourth embodiment. FIG. 19 is a diagram conceptually showing a cross section of a cosmetic mask. FIG. 19 is a diagram conceptually showing an enlarged portion of the inner surface of a cosmetic mask. FIG. 20 is a diagram showing the inner surface of a cosmetic mask according to a fifth embodiment. FIG. 2 is a conceptual enlarged view of a portion of the inner surface of the cosmetic mask.

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Note that the description will be limited to the basic configuration of the present invention, and will omit explanations of configurations that can be implemented by those skilled in the art.

[0032] First Embodiment A preferred embodiment of the present invention will be described below with reference to the drawings. Note that a description of configurations that can be implemented by a person skilled in the art will be omitted, and only the basic configuration of the present invention will be described.

[0033] As shown in Figures 1 and 2, a cosmetic mask 1 (hereinafter referred to as "mask 1") is formed from a single base sheet 2. The mask 1 is a cosmetic mask for the face of a user 200 (see Figure 6). The base sheet 2 is formed from a single nonwoven fabric. The material of the nonwoven fabric is, for example, polyester, nylon, polyethylene, polypropylene, polyvinyl alcohol, cotton, cupra, rayon, pulp, etc., but is not limited to these. The base sheet 2 has a basis weight (mass of fabric per certain area) within a predetermined range. The basis weight within the predetermined range is, for example, 30 grams per square meter (g / m ２ ) or more than 70 grams (g / m ２ In this embodiment, the nonwoven fabric is made of polyester and has a basis weight of 40 grams per square meter (g / m ２ The specifications of the nonwoven fabric used in all the embodiments described in this specification and in Experiments 1 to 5 described later are the same as those of the base sheet 2 described above.

[0034] The mask 1 does not contain any liquid cosmetic composition such as a beauty serum at the time of completion of manufacturing or sale. The mask 1 is configured to generate carbon dioxide gas by applying, spraying, or impregnating (in this specification, application, spraying, or impregnation are collectively referred to as "application") a cosmetic composition to the mask 1 just before the user puts the mask 1 on their face.

[0035] Here, the cosmetic composition will be explained. The main component of the cosmetic composition is water, and it further contains at least one of the following beauty ingredients. Examples of the beauty ingredients include human oligopeptide-1, human oligopeptide-13, acetyl hexapeptide-8, palmitoyl pentapeptide-4, water-soluble collagen, hydrolyzed collagen, succinoyl atelocollagen, magnesium ascorbyl phosphate, Saccharomyces (brown sugar, placenta extract) fermentation liquid, sodium hyaluronate, sodium acetyl hyaluronate, sodium hyaluronate crosspolymer, cerebroside, arbutin, magnesium aspartate, glycyrrhizin, and glycerin. The ingredients are dipotassium ricinate, copper gluconate, zinc gluconate, placenta extract, umbilical cord extract, water-soluble proteoglycan, platinum, sake lees extract, Rhodiola rosea root extract, apple fruit cell culture extract, vitamin A oil, tocopherol, Saccharomyces cerevisiae extract, cerebrosides, PCA-Na, natto gum, avocado oil, rosa canina fruit oil, apricot kernel oil, sunflower seed oil, sodium dilauramidoglutamide lysine, aminocaproic acid, and betaine. Cosmetic compositions composed of the above ingredients are generally acidic.

[0036] When the mask 1 is used, the outer surface 1a shown in Fig. 1 faces the outside, and the inner surface 1b shown in Fig. 2 contacts the face of the user 200 (see Fig. 6). The mask 1 is configured to cover the entire face of the user 200 (see Figs. 7 and 8).

[0037] <<Outline of Arrangement of Acid and Carbonate in Base Sheet>> The base sheet 2 contains an acid and a carbonate. As shown in Fig. 2 , the acid and the carbonate are arranged so as not to overlap each other on the inner surface 1b, which is one of the main surfaces of the base sheet 2. The inner surface 1b is the surface that comes into contact with the face of the user 200 when the mask 1 is worn on the face (see Figs. 7 and 8 ).

[0038] For example, the acid is citric acid, and the carbonate is sodium bicarbonate (baking soda). However, the acid and carbonate are not limited to these. For example, the carbonate may be sodium carbonate (soda ash). Unlike this embodiment, the acid and carbonate may be disposed on the outer surface 1a (see FIG. 1), or on both the inner surface 1b and the outer surface 1a.

[0039] 2, on the inner surface 1b, an acid region 30A where an acid is disposed and a carbonate region 30B where a carbonate is disposed are arranged so as not to overlap each other. A blank region 30C where neither an acid nor a carbonate is disposed is formed between the acid region 30A and the carbonate region 30B.

[0040] Fig. 3(a) is a schematic cross-sectional view of the mask 1 taken along line A-A in Fig. 2. Fig. 3(b) is an enlarged conceptual view of the acid region 30A and the carbonate region 30B shown in Fig. 3(a). In Fig. 3(b), acid particles are represented as particles 30Aa, and carbonate particles are represented as particles 30Ba.

[0041] 3(b), in the acid region 30A, the plurality of acid particles 30Aa are arranged in relatively greater amounts at positions closer to the inner surface 1b than at positions farther from the inner surface 1b (positions closer to the outer surface 1a) in the thickness direction of the base sheet 2. Specifically, the closer to the inner surface 1b, the greater the amount of acid particles 30Aa arranged. Similarly, in the carbonate region 30B, the plurality of carbonate particles 30Ba are arranged in relatively greater amounts at positions closer to the inner surface 1b than at positions farther from the inner surface 1b (positions closer to the outer surface 1a) in the thickness direction of the base sheet 2. Specifically, the closer to the inner surface 1b, the greater the amount of carbonate particles 30Ba arranged.

[0042] <<Ratio of Acid to Carbonate>> The acid and carbonate are arranged in a ratio of amounts (hereinafter referred to as the "theoretical ratio") that allows the acid and carbonate to react completely to generate carbon dioxide. For example, when citric acid is used as the acid and baking soda is used as the carbonate, the theoretical ratio is a ratio of 1 to 3 in terms of the number of molecules of acid to carbonate. In other words, the first amount is a ratio of 1 molecule of acid to 3 molecules of carbonate. In terms of mass ratio, for example, the ratio is 2.0 grams (g) of acid to 2.5 grams (g) of carbonate.

[0043] Unlike the present embodiment, when the amount of acid in the theoretical ratio is defined as a first amount, the amount of acid disposed in the mask 1 may be less than the first amount. That is, the amount of acid disposed in the mask 1 may be less than the theoretical ratio in terms of the ratio of the number of molecules, and may also be less than the theoretical ratio in terms of the ratio of masses. The inventors of the present invention have noticed that the cosmetic composition applied to the mask 1 by the user when using the mask 1 exhibits acidity, and have conceived of a configuration in which the cosmetic composition partially compensates for the function of the acid.

[0044] <<Details of Arrangement of Acid and Carbonate on Base Sheet>> Fig. 4 is a conceptual diagram showing an enlarged portion of the inner surface 1b of the mask 1, illustrating the positional relationship between the acid region 30A and the carbonate region 30B. As shown in Fig. 4, the strip-shaped acid region 30A and the strip-shaped carbonate region 30B are arranged with a blank region therebetween, and the positions where they are closest to each other are defined as adjacent positions 30An and 30Bn, respectively.

[0045] When the total amount of acid in all acid regions 30A and the total amount of carbonate in all carbonate regions 30B are constant, the width w30A of the acid regions 30A and the width w30B of the carbonate regions 30B are constant, the acid is disposed in all acid regions 30A at substantially the same mass ratio (mass per unit area), and the carbonate is disposed in all carbonate regions 30B at substantially the same mass ratio (hereinafter referred to as "fixed condition 1"), the characteristics of the mask 1 are defined by the distance L1 between the adjacent positions 30An and 30Bn. It is desirable that the number of acid regions 30A and the number of carbonate regions 30B are the same. However, the number of acid regions 30A and the number of carbonate regions 30B are not limited to being the same.

[0046] The mask 1 is characterized by the manner in which carbon dioxide gas is generated over time after the user 200 applies the cosmetic composition to the mask 1 .

[0047] In this embodiment, the width w30A of the acid region 30A is equal to the width w30B of the carbonate region 30B. The widths w30A and w30B are 10 millimeters (mm). The distance L1 is 10 millimeters (mm).

[0048] <<Generation Mode of Carbon Dioxide Gas>> In the mask 1, under the above-mentioned fixed condition 1, a predetermined generation mode of carbon dioxide gas is realized by defining the above-mentioned distance L1.

[0049] In this specification, the concentration of carbon dioxide gas that can be generated in a sealed region (closed system) by the total amount of acid placed in all acid regions 30A and the total amount of carbonate placed in all carbonate regions 30B is referred to as the “maximum concentration.” Also, in this specification, the sealed region (closed system) is a sealed container having a capacity of 1000 milliliters (ml).

[0050] The concentration of carbon dioxide gas (carbon dioxide concentration) generated from the mask 1 is configured to quickly reach 70% to 95% of the maximum concentration after the user 200 begins using the mask 1. The concentration of carbon dioxide gas quickly generated after the start of use is preferably 70% to 90% of the maximum concentration, and more preferably 70% to 85% of the maximum concentration. This allows a sufficient amount of carbon dioxide gas to quickly act on the face of the user 200, thereby achieving a cosmetic effect. The mask 1 is configured to continuously generate carbon dioxide gas while the user 200 is using the mask 1 to replenish the carbon dioxide gas that is discharged to the outside, thereby maintaining the cosmetic effect.

[0051] 5 is a diagram showing an example of a predetermined carbon dioxide gas generation pattern. In the time series (chronological order), the time when the user 200 applies the cosmetic composition to the inner surface 1b of the mask 1 is defined as start time t0, the time when the user 200 finishes wearing the mask 1 is defined as wearing time t3, the intermediate time between start time t0 and wearing time t3 is defined as intermediate time t2, and the time between start time t0 and intermediate time t2, which is one minute after start time t0, is defined as initial time t1. In this embodiment, the maximum concentration of carbon dioxide gas generated by all acids and carbonates placed in the mask 1 is 6000 ppm. The time when the user 200 finishes wearing the mask 1 (wearing time t3) is defined as 10 minutes after start time t0.

[0052] The above definitions of time and maximum concentration are the same in other embodiments in this specification and in Experiments 1 to 5 described below.

[0053] The distance L1 is specified for the mask 1 so that carbon dioxide gas generated from the mask 1 in a closed system will be generated in a predetermined manner. Specifically, in measurement of the cumulative amount of carbon dioxide gas generated from the mask 1 in a closed system, the distance L1 is specified as the distance at which the concentration of carbon dioxide gas generated from the mask 1 reaches 65% to 95% of the maximum concentration at the initial time t1, reaches 75% to 95% of the maximum concentration at the intermediate time t2, and carbon dioxide gas generation continues until the wearing time t3. However, the maximum concentration at the initial time t1 is smaller than the maximum concentration at the intermediate time t2.

[0054] Preferably, the distance L1 is defined as the distance at which the concentration of carbon dioxide gas generated from the mask 1 reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide gas until the wearing time t3.

[0055] More preferably, the distance L1 is defined as the distance at which the concentration of carbon dioxide gas generated from the mask 1 reaches 70% or more and 85% or less of the maximum concentration at the initial time t1, reaches 85% or more and 90% or less of the maximum concentration at the intermediate time t2, and carbon dioxide gas generation continues until the wearing time t3.

[0056] For example, as shown in Figure 5, when a cosmetic composition is applied to a mask 1, the carbon dioxide concentration at the initial time t1 is 4600 ppm, which is approximately 77% of the maximum concentration. Although the carbon dioxide concentration does not reach the maximum concentration at the initial time t1, a sufficient cosmetic effect can be achieved. Furthermore, the carbon dioxide concentration at the intermediate time t2 is approximately 5600 ppm, which is approximately 93% of the maximum concentration.

[0057] In terms of the concentration of carbon dioxide gas generated within a specified time, apart from the cumulative amount of carbon dioxide gas, distance L1 is defined as the distance over which the concentration of carbon dioxide gas generated between the start time t0 and the initial time t1 is 70% or more and 95% or less of the maximum concentration, preferably 70% or more and 90% or less, and more preferably 70% or more and 85% or less (first concentration), and the concentration of carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is 15% or more and 35% or less of the maximum concentration, preferably 15% or more and 30% or less, and more preferably 20% or more and 30% or less (second concentration), the sum of the first concentration and the second concentration is less than 100%, and carbon dioxide gas generation continues until the wearing time t3.

[0058] The mask 1 provides sufficient cosmetic benefits at the initial time t1, and can maintain the cosmetic benefits thereafter by continuously generating carbon dioxide gas. Note that in Experiments 1 to 5 described later in this specification, no correction was made to exclude the carbon dioxide concentration in the external environment (approximately 400 ppm). If correction were made, it would be sufficient to subtract 400 ppm from the carbon dioxide concentration in Experiments 1 to 5.

[0059] <<Manufacturing Process of Cosmetic Mask>> In order to manufacture the cosmetic mask 1, the following steps are carried out.

[0060] In the first step, a solution of acid particles 30Aa (see FIG. 3(b)) (hereinafter referred to as "acid solution") is dripped or printed onto the inner surface 1b of the base sheet 2 (nonwoven fabric) before it is formed into the shape of the mask 1. In the case of printing, silk printing (silk screen) or gravure printing is used. Note that, unlike this embodiment, the base sheet 2 may be formed into the shape of the mask 1 in the first step.

[0061] In the second step, the acid solution is dried to remove the liquid component, leaving only the particles 30Aa on the base sheet 2.

[0062] In the third step, a solution of carbonate particles 30Ba (see FIG. 3B) (hereinafter referred to as "carbonate solution") is dropped or printed onto the inner surface 1b.

[0063] In the fourth step, the carbonate solution is dried to remove the liquid component. Upon completion of the fourth step, the acid particles 30Aa and carbonate particles 30Ba remain on the base sheet 2, and as shown in FIG. 3(b), the acid particles 30Aa and carbonate particles 30Ba are more abundant near the inner surface 1b.

[0064] In the fifth step, the base sheet 2 is cut into the shape of the mask 1 .

[0065] 1 and 2 , the base sheet 2 is formed with eyelid portions 4A and 4B, a nose portion 20, a mouth opening 8, a chin portion 14, side slits 16A and 16B, and protrusions 18 for indicating the up / down, left / right, and front / back directions of the mask 1. A linear horizontal slit 6 is formed below the nose portion 20. The portion of the base sheet 2 that comes into contact with the forehead of the user 200 is referred to as a forehead portion 19.

[0066] The human face is three-dimensional and has concaves and convexes. The state of the concaves and convexes varies depending on the area of ​​the face, with relatively high areas being convex and relatively low areas being concave. The concaves and convexes are most pronounced in the area around the nose. The nose section 20 of the mask 1 is the part that comes into contact with the user's nose.

[0067] Once the mask 1 is impregnated with the cosmetic composition, it is attached to the face of the user 200 (see FIG. 6) (see FIGS. 7 and 8). When wearing the mask 1, the user first places it in contact with the forehead, eyes, nose, etc., and then fits it to the shape of the face, including the cheeks, mouth, and chin. The mask 1 is made larger than the average human face.

[0068] Generally, when a flat face mask is fitted to the three-dimensional shape of the face, wrinkles and sagging parts occur in the face mask, which can cause the face mask to peel off or float from the face. To address the problem of peeling or floating, it is necessary to fine-tune the fit of the face mask. To fine-tune the fit of the face mask, it is necessary to slide the attached face mask over the face, or to grasp a part of the face mask and remove it, and then move it.

[0069] In this regard, the mask 1 is made of a single base sheet 2, so it is thinner and more easily conforms to the shape of the face than masks made of multiple base sheets. Moreover, the mask 1 has side slits 16A and the like that prevent the mask 1 from wrinkling or sagging, while allowing for easy adjustment after initial placement and effective wearing on the face.

[0070] <<Actions and Effects of Mask 1>> Mask 1 is formed from base sheet 2, which is a single piece of nonwoven fabric, and because the acid and carbonate are disposed on base sheet 2 as described above and formed into the shape described above, mask 1 can conform to and fit closely to the uneven shape of the face of user 200. Then, while mask 1 is in a state of conforming to and fitting closely to the uneven shape of the face of user 200, it generates carbon dioxide gas, thereby achieving a sufficient beauty effect on the face of user 200.

[0071] <<Experiment 1 and Description>> Below, an experiment conducted by the inventor of the present invention will be described. The inventor of the present invention discovered through the experiment described below that the characteristics of the mask 1 can be defined by the distance L1 under the above-mentioned fixing condition 1. Figures 9 to 11 are diagrams for explaining Experiment 1 on the mask 1. Experiment 1 and Experiments 2 to 5 described below were conducted in a state where the nonwoven fabric before constructing the mask 1 was cut into a rectangle.

[0072] 9 and 10, test pieces 500A to 500D were prepared, each having a different distance between the acid region 30A and the carbonate region 30B. The distance between the acid region 30A and the carbonate region 30B was the width w3A to w3D of the blank region 30C.

[0073] In the test pieces 500A to 500D, the acid region 30A and the carbonate region 30B are formed in a strip shape on the nonwoven fabric, and are arranged with a blank region 30C sandwiched between them. The width w1 of the acid region 30A and the width w2 of the carbonate region 30B are equal. The widths w1 and w2 were 1 centimeter (cm). The total area of ​​the acid region 30A was 20 square centimeters (cm ２ ), and the total area of ​​the carbonate region 30B is 30 square centimeters (cm ２ ) was.

[0074] For each of the test pieces 500A to 500D, the acids and carbonates were arranged as follows:

[0075] A 30% citric acid solution (w / w) was prepared and 20 microliters (μL) of each solution was applied to the strip-shaped area forming the acid region 30A using a micropipette. The strip was then dried at 40°C in a dryer. The weight after drying (hereinafter referred to as the "first post-drying weight") was measured and compared with the weight before the citric acid was applied to calculate the amount of citric acid applied. The amount of citric acid applied was 0.24 grams (g).

[0076] Next, a 20% soda ash solution (w / w) was prepared, and 20 microliters (μL) of each solution was applied to the band-shaped area forming the carbonate region 30B using a micropipette. The sample was then dried at 40°C in a dryer. The post-drying weight (hereinafter referred to as the "second post-drying weight") was measured, and the amount of soda ash applied was calculated by comparing it with the first post-drying weight described above. The amount of soda ash applied was 0.28 grams (g).

[0077] After placing citric acid and soda ash on the test pieces 500A to 500D as described above, 20 square centimeters (cm ２ ) was injected with 1 milliliter (mL) of water per 100 ml of water, and the concentration of carbon dioxide (carbonic acid gas) in the closed system was measured at predetermined time intervals.

[0078] The carbon dioxide concentration was measured as follows. First, a 1000 milliliter (mL) sealed container was prepared, and a 20 square centimeter (cm ２The samples were soaked in 1 milliliter (mL) of water per 100ml of water and immediately placed in a sealed container. The carbon dioxide concentration in the closed system was then measured at predetermined intervals using a gas aspirator and a gas detector. The gas aspirator used was a Gastec GSP-300FT-2 (https: / / www.gastec.co.jp / files / topics / 2127_ext_14_1.pdf). The gas detector used was a Gastec carbon dioxide detector tube 2LL (https: / / www.gastec.co.jp / product / detail / id=1786).

[0079] The above-described fixing condition 1 is applied to the test pieces 500A to 500D, and the widths of the blank area 30C are different. The width w3A of the blank area 30C of the test piece 500A is 5 millimeters (mm), the width w3B of the blank area 30C of the test piece 500B is 10 millimeters (mm), the width w3C of the blank area 30C of the test piece 500C is 15 millimeters (mm), and the width w3D of the blank area 30C of the test piece 500D is 20 millimeters (mm).

[0080] The change in the cumulative value of the carbon dioxide concentration over time in a closed system was measured for each of the test pieces 500A to 500D, and the results shown in FIG. 11 were obtained.

[0081] 11, in the test piece 500C, the carbon dioxide concentration substantially reaches its maximum at the attachment time t3. However, at the initial time t1, the concentration is approximately 2900 ppm, which is less than 50% of the maximum concentration. Also, at the intermediate time t2, the concentration is approximately 4600 ppm, which is less than 80% of the maximum concentration.

[0082] For test piece 500D, the concentration was approximately 2200 PPM at the initial time t1, which was less than 50% of the maximum concentration, and approximately 4100 PPM at the intermediate time t2, which was less than 70% of the maximum concentration.

[0083] In this embodiment, the cases where the carbon dioxide concentration does not reach 70% of the maximum concentration at the initial time t1, as in test pieces 500C and 500D, and the cases where the carbon dioxide concentration does not reach 85% of the maximum concentration at the intermediate time t2 are excluded.

[0084] In the test strip 500A, the carbon dioxide concentration substantially reaches its maximum at the initial time t1. However, there is almost no increase in the carbon dioxide concentration after the initial time t1. Therefore, when the test strip 500A is applied to the mask 1, the user 200 can quickly receive the beauty effect of the maximum concentration of carbon dioxide when placing the cosmetic mask 1 on their face, but no new carbon dioxide is replenished thereafter. For this reason, the present embodiment excludes the test strip 500A.

[0085] In the test strip 500B, the carbon dioxide concentration at the initial time t1 is approximately 4600 PPM, which is approximately 77% of the maximum concentration. The carbon dioxide concentration at the intermediate time t2 is approximately 5500 PPM, which is approximately 92% of the maximum concentration. At the wearing time t3, the carbon dioxide concentration is essentially the maximum concentration of 6000 PPM. The carbon dioxide concentration continuously increases between the start time t0 and the wearing time t3. The test strip 500B exhibits a sufficient cosmetic effect at the initial time t1, and the cosmetic effect can be maintained thereafter. In this embodiment, an aspect such as the test strip 500B is adopted.

[0086] <<Experiment 2 and Description>> Experiment 2 will be described with reference to Figures 12 and 13. Explanation of matters common to Experiment 1 will be omitted, and differences from Experiment 1 will be mainly described.

[0087] 12 is a diagram showing test pieces 501A to 501E used in Experiment 2. In test pieces 501A to 501E, the width w1 of the acid region 30A and the width w2 of the carbonate region 30B were equal. The widths w1 and w2 were set to 5 millimeters (mm). In test pieces 501A to 501E, the total amount of acid in the acid region 30A and the total amount of carbonate in the carbonate region 30B were the same as in Experiment 1.

[0088] The width w3x of the blank area 30C varies among the test specimens 501A to 501E: the width w3x of the blank area 30C is 5 millimeters (mm) for the test specimen 501A, 7.5 millimeters (mm) for the test specimen 501B, 10 millimeters (mm) for the test specimen 501C, 15 millimeters (mm) for the test specimen 501D, and 20 millimeters (mm) for the test specimen 501E.

[0089] For each of the test pieces 501A to 501E, an experiment similar to that of Experiment 1 was conducted to measure the carbon dioxide generation. However, while Experiment 1 measured the carbon dioxide concentration as a cumulative value of carbon dioxide, Experiment 2 measured the concentration of carbon dioxide generated within a predetermined time. Specifically, the measurements were conducted as follows. For each of the test pieces 501A to 501E, a 20 square centimeter (cm ２ One milliliter (mL) of water was poured into each container (capacity 1 liter) and placed in a sealed container. The carbon dioxide concentration in the sealed container was measured after one minute (initial time t1). The sealed container was then released, the carbon dioxide accumulated up to the initial time t1 was removed, and the sealed container was re-established. The carbon dioxide concentration in the sealed container was measured after four minutes (intermediate time t2). The sealed container was then released, the carbon dioxide accumulated up to the intermediate time t2 was removed, and the sealed container was re-established. The carbon dioxide concentration in the sealed container was measured after seven minutes (second half time t2.5). The sealed container was then released, the carbon dioxide accumulated up to the second half time t2.5 was removed, and the sealed container was re-established. The carbon dioxide concentration in the sealed container was measured after 10 minutes (wearing time t3). In other words, the concentration of carbon dioxide (carbonic acid gas) generated over a predetermined time interval was measured.

[0090] The carbon oxide concentration was measured for each of the test pieces 501A to 501E at predetermined time intervals, and the results shown in FIG. 13 were obtained.

[0091] As shown in FIG. 13, the carbon dioxide concentrations at the initial time t1 were approximately 3200 PPM, approximately 2700 PPM, and approximately 2000 PPM for the test pieces 501C, 501D, and 501E, respectively, and did not reach 60% of the maximum concentration.

[0092] When the test pieces 501C, 501D, and 501E are applied to the mask 1, the carbon dioxide concentration generated at the initial time t1 does not reach 60% of the maximum concentration, and therefore sufficient cosmetic effects cannot be achieved. In this embodiment, the test pieces 501C, 501D, and 501E are excluded.

[0093] In the test pieces 501A and 501B, the carbon dioxide concentrations are approximately 5700 PPM and approximately 4300 PPM, respectively, at the initial time t1, which are 70% of the maximum concentration.

[0094] For test strip 501A, the carbon dioxide concentration at intermediate time t2 was approximately 800 ppm, which was less than 15% of the maximum concentration. In other words, when test strip 501A is applied to mask 1, the carbon dioxide concentration generated at initial time t1 is sufficient to achieve a cosmetic effect, but the concentration of carbon dioxide generated thereafter drops sharply by intermediate time t2, making it impossible to replenish a sufficient amount of carbon dioxide. For this reason, this embodiment excludes test strip 501A.

[0095] In the test strip 501B, the carbon dioxide concentration was approximately 1500 ppm at the intermediate time t2, which was 25% of the maximum concentration. Therefore, the carbon dioxide concentration generated at the initial time t1 was sufficient to achieve a cosmetic effect, and a sufficient amount of carbon dioxide gas could be replenished thereafter. In this embodiment, an embodiment such as the test strip 501B is adopted.

[0096] Second Embodiment A mask 1A (see FIGS. 1 and 2) of a second embodiment will be described with reference to FIGS. 14 to 18. Explanations of features common to the first embodiment will be omitted, and differences from the first embodiment will be mainly described. The basic configuration of the mask 1A is the same as that of the mask 1 of the first embodiment. However, the method of defining the acid region 30A and the carbonate region 30B differs. In the second embodiment, the features of the mask 1A are realized by defining the widths of the acid region 30A and the carbonate region 30B.

[0097] When the total amount of acid in all acid regions 30A and the total amount of carbonate in all carbonate regions 30B are constant, acid is arranged in all acid regions 30A in substantially the same mass proportion, carbonate is arranged in all carbonate regions 30B in substantially the same mass proportion, and the distance between adjacent acid regions 30A and carbonate regions 30B (the width of blank region 30C) is constant (hereinafter referred to as "fixed condition 2"), the characteristics of mask 1A are determined by the width of the acid regions and the width of the carbonate regions.

[0098] The width of the acid region 30A and the width of the carbonate region 30B (hereinafter referred to as "each width") are defined as the width within which, in measuring the cumulative amount of carbon dioxide gas generated from the mask 1A in a closed system, the concentration of carbon dioxide gas generated from the mask 1A reaches 65% to 95% of the maximum concentration at the initial time t1, reaches 75% to 95% of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide gas until the wearing time t3.

[0099] Preferably, each range is defined as a range in which the concentration of carbon dioxide gas generated from the mask 1A reaches 70% or more and 90% or less of the maximum concentration at the initial time t1, reaches 85% or more and 95% or less of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide gas until the wearing time t3.

[0100] More preferably, each range is defined as a range in which the concentration of carbon dioxide gas generated from the mask 1A reaches 70% or more and 85% or less of the maximum concentration at the initial time t1, reaches 85% or more and 90% or less of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide gas until the wearing time t3.

[0101] In terms of the concentration of carbon dioxide gas generated within a specified time, each width is defined as a distance over which the concentration of carbon dioxide gas generated between the start time t0 and the initial time t1 is 70% or more and 95% or less of the maximum concentration, preferably 70% or more and 90% or less, and more preferably 70% or more and 85% or less (first concentration), and the concentration of carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is 15% or more and 35% or less of the maximum concentration, preferably 15% or more and 30% or less, and more preferably 20% or more and 30% or less (second concentration), the sum of the first concentration and the second concentration is less than 100%, and carbon dioxide gas generation continues until the wearing time t3.

[0102] <<Experiment 3>> Experiment 3 will be described with reference to Figures 14 to 16. Explanation of matters common to Experiments 1 and 2 will be omitted, and differences from Experiments 1 and 2 will be mainly described.

[0103] 14 and 15 are diagrams showing test pieces 502A to 502D used in Experiment 3. In test pieces 502A to 502D, the width w3e of the blank region 30C was constant. The width w3e was set to 10 millimeters (mm). In test pieces 502A to 502D, the width of the acid region 30A and the width of the carbonate region 30B were different. The total amount of acid in the acid region 30A and the total amount of carbonate in the carbonate region 30B were the same as in Experiment 1 and were the same for test pieces 502A to 502D. The maximum concentration was also the same as in Experiment 1, at 6,000 ppm.

[0104] The width w1e of the acid region 30A and the width w2e of the carbonate region 30B of the test specimen 502A are 5 millimeters (mm). The width w1f of the acid region 30A and the width w2f of the carbonate region 30B of the test specimen 502B are 10 millimeters (mm). The width w1g of the acid region 30A and the width w2g of the carbonate region 30B of the test specimen 502C are 15 millimeters (mm). The width w1h of the acid region 30A and the width w2h of the carbonate region 30B of the test specimen 502D are 20 millimeters (mm).

[0105] An experiment on the generation of carbon dioxide was carried out for each of the test pieces 502A to 502D in the same manner as in Experiment 1. As a result, the results shown in FIG. 16 were obtained.

[0106] As shown in FIG. 16, in the test pieces 502C and 502D, at the initial time t1, the carbon dioxide concentrations were approximately 2400 PPM and approximately 1600 PPM, respectively, which did not reach 50% of the maximum concentration.

[0107] When the test pieces 502C and 502D are applied to the mask 1A, the concentration of carbon dioxide generated at the initial time t1 is insufficient to provide a cosmetic effect to the face of the user 100.

[0108] In the test pieces 502A and 502B, at the initial time t1, the carbon dioxide concentrations are approximately 5000 PPM and approximately 4200 PPM, respectively, which are 70% of the maximum concentration.

[0109] When the test pieces 502A and 502B are applied to the mask 1A, the concentration of carbon dioxide generated from the start time t0 to the initial time t1 provides a sufficient cosmetic effect.

[0110] The carbon dioxide concentration at intermediate time t2 for test strip 502A was approximately 5600 PPM, which was more than 90% of the maximum concentration. For test strip 502B, it was approximately 5200 PPM, which was more than 85% of the maximum concentration. The carbon dioxide concentration for test strips 502A and 502B continued to increase until wearing time t3. Therefore, when test strips 502A and 502B are applied to mask 1A, the carbon dioxide gas generated from initial time t0 to initial time t1 provides a sufficient cosmetic effect, and the cosmetic effect is maintained by newly generated carbon dioxide gas thereafter.

[0111] <<Experiment 4>> Experiment 4 will be described with reference to Figures 17 and 18. Explanation of matters common to Experiments 1 to 3 will be omitted, and differences from Experiments 1 to 3 will be mainly described.

[0112] 17 is a diagram showing test pieces 504A to 504E used in Experiment 4. In the test pieces 504A to 504E, the width w3 of the blank area 30C is constant and set to 5 millimeters (mm).

[0113] The width w1x of the acid region 30A and the width w2x of the carbonate region 30B are equal, but vary in size for each of the test specimens 504A-504E: width w1x, width w2x are 5 millimeters (mm), 7.5 millimeters (mm), 10 millimeters (mm), 15 millimeters (mm), and 20 millimeters (mm), respectively, for the test specimens 504A-504E.

[0114] The following experiments were performed on each of the test pieces 504D to 504E. ２ One milliliter (mL) of water was poured into each container (capacity 1 liter) and placed in a sealed container. The carbon dioxide concentration in the sealed container was measured after one minute (initial time t1). The sealed container was then released, the carbon dioxide accumulated up to the initial time t1 was removed, and the sealed container was re-established. The carbon dioxide concentration in the sealed container was measured after four minutes (intermediate time t2). The sealed container was then released, the carbon dioxide accumulated up to the intermediate time t2 was removed, and the sealed container was re-established. The carbon dioxide concentration in the sealed container was measured after seven minutes (second half time t2.5). The sealed container was then released, the carbon dioxide accumulated up to the second half time t2.5 was removed, and the sealed container was re-established. The carbon dioxide concentration in the sealed container was measured after 10 minutes (wearing time t3). Specifically, the concentration of carbon dioxide (carbonic acid gas) generated over a predetermined time interval was measured, and the results shown in FIG. 18 were obtained.

[0115] 18, the carbon dioxide concentration at the initial time t1 is approximately 2500 PPM for test piece 504D, which is less than 50% of the maximum concentration, and approximately 1600 PPM for test piece 504E, which is less than 40% of the maximum concentration.

[0116] For the test pieces 504A, 504B, and 504C, the carbon dioxide concentrations at the initial time t1 were approximately 5700 PPM, approximately 4600 PPM, and approximately 4200 PPM, respectively, all of which reached 70% of the maximum concentration.

[0117] For test piece 504A, the carbon dioxide concentration at intermediate time t2 was approximately 800 ppm, which was less than 15% of the maximum concentration. Therefore, when test piece 504A is applied to mask 1A, the carbon dioxide gas generated between initial time t1 and intermediate time t2 is insufficient to replenish the carbon dioxide gas discharged to the outside.

[0118] At the intermediate time t2, the carbon dioxide concentrations of test strips 504B and 504C were approximately 1500 PPM and 1600 PPM, respectively, which reached 25% of the maximum concentration. Then, by the second half time t2.5, the carbon dioxide concentration generated from test strip 504B was approximately 800 PPM, which reached 10% of the maximum concentration. Also, by the second half time t2.5, the carbon dioxide concentration generated from test strip 504C was approximately 1400 PPM, which reached 20% of the maximum concentration. Test strips 504B and 504C continued to generate carbon dioxide until the wearing time t3.

[0119] When the test strips 504B and 504C are applied to the mask 1A, a sufficient cosmetic effect can be achieved at the initial time t1, the cosmetic effect can be maintained at the intermediate time t2, and a suitable cosmetic effect can be achieved up to the wearing time t3. The test strip 504C generates carbon dioxide at a maximum concentration of 15% or more even between the intermediate time t2 and the latter half time t2.5, so that the carbon dioxide gas discharged to the outside can be sufficiently replenished. The mask 1A employs the test strip 504B or 504C as the base sheet 2.

[0120] Third Embodiment A mask 1B (see FIGS. 1 and 2) of a third embodiment will be described with reference to FIGS. 19 and 20. Explanations of features common to the first and second embodiments will be omitted, and differences will be mainly described. The basic configuration of the mask 1B is similar to that of the mask 1 of the first embodiment and the mask 1A of the second embodiment. However, the method of defining the acid region 30A, carbonate region 30B, and blank region 30C differs. In the third embodiment, the total amount of acid and the total amount of carbonate in the acid region 30A and carbonate region 30B are the same as those in the first and second embodiments. However, in the mask 1B of the third embodiment, the widths of the blank region 30C, the acid region 30A, and the carbonate region 30B are specified so that, in measuring the cumulative amount of carbon dioxide gas generated from the mask 1B in a closed system, the concentration of carbon dioxide gas generated from the mask 1B reaches 65% to 95% of the maximum concentration at the initial time t1, reaches 75% to 95% of the maximum concentration at the intermediate time t2, and continues to be generated until the wearing time t3, where the concentration of carbon dioxide gas at the initial time t1 is lower than the concentration of carbon dioxide gas at the intermediate time t2.

[0121] Preferably, the widths of the blank region 30C, the acid region 30A, and the carbonate region 30B are specified so that the concentration of carbon dioxide gas generated from the mask 1B reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to be generated until the wearing time t3, where the concentration of carbon dioxide gas at the initial time t1 is lower than the concentration of carbon dioxide gas at the intermediate time t2.

[0122] More preferably, the widths of the blank region 30C, the acid region 30A, and the carbonate region 30B are specified so that the concentration of carbon dioxide gas generated from the mask 1B reaches 70% to 85% of the maximum concentration at the initial time t1, reaches 85% to 90% of the maximum concentration at the intermediate time t2, and continues to be generated until the wearing time t3, where the concentration of carbon dioxide gas at the initial time t1 is lower than the concentration of carbon dioxide gas at the intermediate time t2.

[0123] 19(a) shows test specimens 506A to 506E according to the reference embodiment. In each of the test specimens 506A to 506E, the width w3 of the blank region 30C is constant at 5 millimeters (mm). In contrast, the width w1x of the acid region 30A and the width w2x of the carbonate region 30B are equal but different in each of the test specimens 506A to 506E. The width w1x of the acid region 30A and the width w2x of the carbonate region 30B are 5 millimeters (mm), 7.5 millimeters (mm), 10 millimeters (mm), 15 millimeters (mm), and 20 millimeters (mm), respectively.

[0124] 19B is a diagram showing a test specimen 508 according to the third embodiment. The total amount of acid in the acid region 30A and the total amount of carbonate in the carbonate region 30B of the test specimen 508 are the same as those of the test specimens 506A to 506E.

[0125] Test piece 508 includes acid region 30A1 and acid region 30A2. The width w1A of acid region 30A1 is 5 millimeters (mm), and the width w1B of acid region 30A2 is 10 millimeters (mm). Test piece 508 also includes carbonate region 30B1 and carbonate region 30B2. The width w2A of carbonate region 30B1 is 5 millimeters (mm), and the width w2B of carbonate region 30B2 is 10 millimeters (mm). Test piece 508 also includes blank region 30C1 and blank region 30C2. The width w3k1 of blank region 30C1 is 5 millimeters (mm), and the width w3k2 of blank region 30C2 is 10 millimeters (mm).

[0126] The cumulative concentration of carbon dioxide in the closed system was measured for each of the test pieces 506A to 506E and 508, and the results shown in FIG. 20 were obtained.

[0127] 20, in test pieces 506D and 506E, the carbon dioxide concentrations at initial time t1 were approximately 2500 PPM and approximately 1600 PPM, respectively, which did not reach 50% of the maximum concentration. In test piece 506C, the carbon dioxide concentration at initial time t1 was approximately 4000 PPM, which did not reach 70% of the maximum concentration.

[0128] In the test pieces 506A, 506B, and 508, the carbon dioxide concentrations at the initial time t1 were approximately 5000 PPM, approximately 4500 PPM, and approximately 4700 PPM, respectively, which reached 70% of the maximum concentration.

[0129] For test piece 506A, the carbon dioxide concentration is approximately 5800 ppm at intermediate time t2, but thereafter shows almost no increase until wearing time t3. This indicates that for test piece 506A, almost no new carbon dioxide is generated after intermediate time t2. For test piece 506B, almost no new carbon dioxide is generated after intermediate time t2. This indicates that when test piece 506A or 506B is applied to mask 1B, the carbon dioxide gas discharged to the outside is not replenished after intermediate time t2.

[0130] In the test piece 508, the carbon dioxide concentration at the intermediate time t2 is approximately 5500 ppm, which is 90% of the maximum concentration. Furthermore, in the test piece 508, the carbon dioxide concentration increases thereafter until the wearing time t3.

[0131] 21 to 23, a mask 1C according to a fourth embodiment will be described. Explanation of matters common to the first embodiment will be omitted, and the explanation will focus on matters different from the first embodiment.

[0132] 21, in the base sheet 2C of the mask 1C, the acid regions 31A and the carbonate regions 31B are arranged in a grid pattern. Each side of the grid is 10 millimeters (mm). A blank region 30C is formed between the acid regions 31A and the carbonate regions 31B.

[0133] 22(a), the acid region 31A and the carbonate region 31B are biased toward the outer surface 1a. A limiting layer 40, which is a layer for limiting the passage of liquids and gases, is disposed on the outer surface 1a. The limiting layer 40 is made of, for example, aluminum foil.

[0134] As shown in FIG. 22( b), in the acid region 31A and the carbonate region 31B, the acid particles 31Aa and carbonate particles 31Ba are arranged in greater amounts closer to the outer surface 1a than further from the outer surface 1a (i.e., closer to the inner surface 1b) in the thickness direction of the base sheet 2. In this case, when the user 200 applies a cosmetic composition to the inner surface 1b of the mask 1C during use, a relatively small amount of carbon dioxide is generated by the reaction of the acid and carbonate near the inner surface 1b in the initial stage, resulting in a weak cosmetic effect. Over time, the relatively large amount of carbon dioxide generated near the outer surface 1a is restricted from being released to the outside by the restriction layer 40 and directed toward the inner surface 1b, resulting in a delayed release from the inner surface 1b, resulting in a gradually increasing cosmetic effect. In this way, by varying the amount of carbon dioxide in multiple stages, the intensity of the cosmetic effect can be gradually increased.

[0135] <<Distance Between Acid Region and Carbonate Region in Mask 1C>> As shown in FIG. 23 , the shortest distance between the proximity positions 31An and 31Bn of the acid region 31A and carbonate region 31B is defined as distance L1. Distance L1 is 10 millimeters, the same as that of the mask 1 (test piece 500B) of the first embodiment. However, in mask 1, the acid region 30A and carbonate region 30B are formed in a strip shape, and the acid region 30A and carbonate region 30B face each other in at most two locations. In contrast, in mask 1C, the acid region 31A and carbonate region 31B face each other in at most four locations, along the four sides of the square. Note that the widths of the acid region, carbonate region, and blank region in the first to third embodiments are the minimum widths of the acid region, carbonate region, and blank region, respectively, in the fourth embodiment.

[0136] Therefore, when a liquid cosmetic composition is applied to the mask 1C during use, the concentration of carbon dioxide gas increases more quickly than when the acid and carbonate regions are arranged in strips as in the mask 1C.

[0137] This means that in mask 1C, in order to achieve a predetermined carbon dioxide gas generation pattern, the distance L1 can be made greater than 10 millimeters compared to when an acid region and a carbonate region are arranged as in mask 1. Increasing the distance L1 makes it possible to more reliably maintain the acid and carbonate in an unreacted state when mask 1C is not in use.

[0138] <<Manufacturing Process for Mask 1C>> The following steps are performed to arrange acid and carbonate in the base sheet 2C. In a first step, a solution of acid particles 31Aa (see FIG. 22(b)) (hereinafter referred to as the "acid solution") is dripped or printed onto the outer surface 1a of a nonwoven fabric before it is shaped into the mask 1C. In a second step, the acid solution is dried to remove the liquid component, leaving only the particles 31Aa remaining on the base sheet 2A. In a third step, a solution of carbonate particles 31Ba (see FIG. 22(b)) (hereinafter referred to as the "carbonate solution") is dripped or printed onto the outer surface 1a. In a fourth step, the carbonate solution is dried to remove the liquid component. Upon completion of the fourth step, the acid particles 31Aa and carbonate particles 31Ba remain on the base sheet 2C, and as shown in FIG. 22(b), the closer to the outer surface 1a, the greater the amount of the acid particles 31Aa and carbonate particles 31Ba that are arranged. In a fifth step, a limiting layer 40 is arranged on the outer surface 1a. In the fifth step, the nonwoven fabric is formed into the shape of the mask 1C.

[0139] <Modification of the Fourth Embodiment> In a modification of the fourth embodiment, the limiting layer 40 is not formed on the base sheet 2C. As a result, some of the carbon dioxide generated near the outer surface 1a of the base sheet 2A is discharged to the outside. As a result, the amount of carbon dioxide that reaches the face of the user 200 is reduced compared to the fourth embodiment, and a softer cosmetic effect can be achieved.

[0140] Fifth Embodiment A mask 1D according to a fifth embodiment will be described with reference to Figures 24 and 25. Explanation of matters common to the first embodiment will be omitted, and the following will focus on matters different from the first embodiment.

[0141] 24 and 25 , in a mask 1D, acid regions 32A and carbonate regions 32B are arranged as a number of circular dots on the inner surface 1b of a base sheet 2D. The regions inside the circular shapes are the acid regions 32A and the carbonate regions 32B, respectively. The diameter of the circular dots is, for example, 5 millimeters (mm).

[0142] As shown in FIG. 25 , the shortest distance between the acid region 32A and the carbonate region 32B is distance L1. Because the acid region 32A and the carbonate region 32B are small and circular, the area of ​​the blank region 32C can be made larger than in the first embodiment. Furthermore, each acid region 32A faces four carbonate regions 32B, and each carbonate region 32B faces four acid regions 32A. Therefore, when a cosmetic composition is applied to the mask 1D, the time it takes for the carbon dioxide concentration to increase is shorter than in the mask 1 of the first embodiment. Furthermore, because carbon dioxide is generated relatively uniformly at each position on the inner surface 1b of the mask 1D, a relatively uniform cosmetic effect can be achieved at each position on the user's face 200.

[0143] In addition, the width of the acid region, the width of the carbonate region, and the width of the blank region in the first to third embodiments are the minimum width of the acid region, the minimum width of the carbonate region, and the minimum width of the blank region, respectively, in the fifth embodiment.

[0144] The cosmetic container of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Furthermore, the above-described embodiments can be combined as appropriate as long as no technical contradiction occurs.

[0145] 1, 1A, 1B, 1C, 1D Beauty mask 2, 2A, 2B, 2C, 2D Base material sheet 4A, 4B Eyelid 6 Notch 8 Mouth opening 19 Forehead 14 Jaw 16A, 16B Side notch 20 Nose 30A, 31A, 32A Acid area 30B, 31B, 32B carbonate region

Claims

1. A beauty mask that generates carbon dioxide gas, comprising a base sheet formed from a single piece of nonwoven fabric, an acid, and a carbonate, the acid and the carbonate being arranged on the base sheet in a manner that they do not overlap each other on the inner surface, which is one of the main surfaces of the base sheet, and / or on the outer surface, which is the main surface opposite the inner surface.

2. The cosmetic mask according to claim 1, wherein a blank region in which neither the acid nor the carbonate is disposed is formed between an acid region in which the acid is disposed and a carbonate region in which the carbonate is disposed on the inner surface and / or the outer surface.

3. A cosmetic mask according to claim 1 or claim 2, wherein the acid and the carbonate are arranged in relatively larger amounts in positions closer to the inner surface than in positions farther from the inner surface in the thickness direction of the base sheet.

4. A cosmetic mask according to claim 1 or claim 2, wherein the acid and the carbonate are arranged in relatively larger amounts in positions closer to the outer surface than in positions farther from the outer surface in the thickness direction of the base sheet.

5. The cosmetic mask according to claim 1 or 2, wherein when the amount of the acid in the proportion for most effectively generating carbon dioxide by the reaction of the acid and the carbonate is a first amount, the amount of the acid disposed in the mask is less than the first amount.

6. The cosmetic mask according to claim 1 or 2, wherein a restricting layer is disposed on the outer surface to restrict the passage of liquids and gases.

7. In a time series, the time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as start time t0, the time when the user finishes wearing the cosmetic mask is defined as wearing time t3, the intermediate time between the start time t0 and the wearing time t3 is defined as intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as initial time t1. In a closed system with a capacity of 1000 milliliters (ml), the total amount of acid placed in the acid region and the total amount of carbonate placed in the carbonate region are used to calculate the amount of acid generated. The cosmetic mask according to claim 1 or 2, wherein, when the concentration of carbon dioxide is the maximum concentration and the total area of ​​the acid region and the total area of ​​the carbonate region are constant, the shortest distance between adjacent acid regions and carbonate regions is defined as the distance at which, in measuring the cumulative amount of carbon dioxide generated from the cosmetic mask in a closed system, the concentration of carbon dioxide generated from the cosmetic mask reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide until the wearing time t3.

8. In a time series, the time when the liquid cosmetic composition is applied to the inner surface of the cosmetic mask by the user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the intermediate time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and the concentration of the carbon dioxide gas generated by the total amount of the acid placed in the acid region and the total amount of the carbonate placed in the carbonate region in a closed system with a capacity of 1000 milliliters (ml) is defined as a maximum concentration. and when the total area of ​​the acid region and the total area of ​​the carbonate region are constant, the shortest distance between adjacent acid regions and carbonate regions is defined as the distance at which the concentration of carbon dioxide gas generated between the start time t0 and the initial time t1 is 70% or more and 90% or less of the maximum concentration (first concentration), the concentration of carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is 15% or more and 30% or less of the maximum concentration (second concentration), the sum of the first concentration and the second concentration is less than 100%, and carbon dioxide gas generation continues until the wearing time t3.

9. In a time series, the time when the liquid cosmetic composition is applied to the inner surface of the cosmetic mask by the user is defined as start time t0, the time when the user finishes wearing the cosmetic mask is defined as wearing time t3, the intermediate time between the start time t0 and the wearing time t3 is defined as intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as initial time t1. In a closed system with a capacity of 1000 milliliters (ml), the total amount of the acid placed in the acid region and the amount of the carbonate placed in the carbonate region are calculated. The beauty mask according to claim 1 or 2, wherein, when the concentration of the carbon dioxide gas generated by the total amount of salt is the maximum concentration and the shortest distance between the adjacent acid region and carbonate region is constant, the width of the acid region and the width of the carbonate region are defined as a width within which the cumulative concentration of carbon dioxide gas generated from the beauty mask in a closed system reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide gas until the wearing time t3.

10. In a time series, the time when the liquid cosmetic composition is applied to the inner surface of the cosmetic mask by the user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the intermediate time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1, and the concentration of the carbon dioxide gas generated by the total amount of the acid placed in the acid region and the total amount of the carbonate placed in the carbonate region in a closed system with a capacity of 1000 milliliters (ml) is defined as a maximum concentration.

3. The beauty mask according to claim 1 or 2, wherein, when the minimum distance between the adjacent acid region and carbonate region is constant, the width of the acid region and the width of the carbonate region are defined as widths within which the concentration of carbon dioxide gas generated between the start time t0 and the initial time t1 is 70% or more and 90% or less of the maximum concentration (first concentration), the concentration of carbon dioxide gas generated between the initial time t1 and the intermediate time t2 is 15% or more and 30% or less of the maximum concentration (second concentration), the sum of the first concentration and the second concentration is less than 100%, and carbon dioxide gas generation continues until the wearing time t3.

11. In a time series, the time when a liquid cosmetic composition is applied to the inner surface of the cosmetic mask by a user is defined as a start time t0, the time when the user finishes wearing the cosmetic mask is defined as a wearing time t3, the intermediate time between the start time t0 and the wearing time t3 is defined as an intermediate time t2, and the time between the start time t0 and the intermediate time t2, which is one minute after the start time t0, is defined as an initial time t1. In a closed system with a capacity of 1000 milliliters (ml), the total amount of acid placed in the acid region and the amount of acid before being placed in the carbonate region are calculated. The beauty mask according to claim 1 or 2, wherein, when the concentration of the carbon dioxide gas generated by the total amount of carbonate is defined as the maximum concentration, the shortest distance between the adjacent acid region and carbonate region, the width of the acid region, and the width of the carbonate region are defined as a range within which the cumulative concentration of carbon dioxide gas generated from the beauty mask in a closed system reaches 70% to 90% of the maximum concentration at the initial time t1, reaches 85% to 95% of the maximum concentration at the intermediate time t2, and continues to generate carbon dioxide gas until the wearing time t3.

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