Cosmetic product comprising a rubber discharge pad

Abstract

The present invention provides a cosmetic product comprising a rubber discharge pad, the pad comprising radially distributed discharge holes and being made of a rubber material, and the pad discharging the content through the discharge holes. According to the cosmetic product of the present invention, the degree of discharge of the content is properly controlled during use of the content, the radially distributed discharge micro-holes on the surface of the rubber discharge pad have a dispersed discharge function, the content at the bottom of the container is even and easily used due to the elastic property of the rubber discharge pad, thereby minimizing the residual amount, and the content is covered by the rubber discharge pad, thereby enabling the cosmetic product to be carried without the content leaking, and the content is always fresh as if a new product is used due to the isolation from external air and contaminants during use.

Description

Technical Field

[0001] This invention relates to a cosmetic product comprising a rubber discharge pad. More specifically, this invention relates to a cosmetic product comprising a rubber discharge pad having discharge holes and capable of controlling the discharge amount of contents. Background Technology

[0002] When used as traditional cosmetic case products, these products are mostly compressed cosmetic case formulations obtained by compressing powdered contents, or oil-dispersed or emulsified cosmetic case formulations of powder or pressed powder. When using the powdered contents themselves as loose powder or pressed powder formulations, unlike compressed formulations, they have an intermediate structure acting as a mesh (sieve) to allow for controlled application of the contents. Most of these mesh structures have a mesh size of at least 3-5 mm. Because this mesh structure is used to apply a predetermined amount of contents onto the powder puff, it should have a size of at least 3-5 mm.

[0003] Furthermore, traditional cosmetic case products contain liquid cosmetic cases capable of discharging a predetermined amount of liquid contents. This type of traditional product has an airless structure with a single discharge port, releasing a large clump of contents in the form of 0.1-0.4g. Further, this type of liquid cosmetic case product with an airless structure is characterized by limitations on the filling volume and a large amount of residue, resulting in a shortened lifespan. These issues of large discharge and short lifespan lead to consumer dissatisfaction with the effectiveness of cosmetics and the ease of use.

[0004] In these cases, it is recommended to develop a cosmetic product containing contents with a rubber discharge pad structure to enhance the makeup effect through dispersed discharge and to fully utilize the contents. Summary of the Invention

[0005] Technical issues

[0006] The technical problem to be solved by the present invention is to provide a cosmetic product comprising a rubber discharge pad, which can appropriately control the discharge level of the contents through the rubber discharge pad having discharge holes, and can make the contents usable even if they remain at the bottom of the container, thereby minimizing the amount of residue.

[0007] Technical solution

[0008] In one general aspect, the present invention provides a cosmetic product comprising a rubber discharge pad made of a rubber material having radially distributed discharge holes, and capable of discharging contents through said discharge holes.

[0009] According to one embodiment, the rubber may be at least one rubber selected from acrylonitrile-butadiene rubber (NBR), fluorinated NBR, hydrogenated NBR, silicone rubber, NBR-silicone composite rubber, styrene-butadiene rubber (SBR), polychloroprene rubber (CR), isoprene-isobutylene rubber (IIR), butadiene rubber (BR), isoprene rubber (IR), ethylene propylene rubber (EPR), ethylene propylene diene monomer (EPDM) rubber, thermoplastic elastomers, polysulfide rubber, fluororubber, polyurethane rubber, polyester rubber, polyether rubber, chlorosulfonated polyethylene rubber, acrylic acid, and olefins.

[0010] According to another embodiment, the rubber may be at least one rubber selected from acrylonitrile-butadiene rubber (NBR), fluorinated NBR, hydrogenated NBR, silicone rubber, and NBR-silicone composite rubber.

[0011] According to yet another embodiment, the discharge port may have a size of 0.005-2.5 mm.

[0012] According to yet another embodiment, in a unit area of ​​1cm 2 The number of discharge holes present can be 1-50.

[0013] According to yet another embodiment, the discharge hole may be formed by laser perforation.

[0014] According to yet another embodiment, the rubber discharge pad may be circular or polygonal.

[0015] According to yet another embodiment, when the unit area of ​​the rubber discharge pad is 1 cm² 2 When a longitudinal force is applied, the rubber discharge pad can have an elongation of 1%-500%.

[0016] According to yet another embodiment, the rubber discharge pad may have a Shore A hardness of 10A or higher and a Shore D hardness of 75D or lower.

[0017] According to yet another embodiment, the rubber discharge pad may have a thickness of 0.05-2 mm.

[0018] According to yet another embodiment, the rubber discharge pad may have a strength of 20 kg / cm². 2 Tensile strength of 1 or above.

[0019] According to yet another embodiment, the rubber discharge pad may further include a border surrounding it.

[0020] According to yet another embodiment, the contents may have a viscosity of 3,000-100,000 cps.

[0021] Beneficial effects

[0022] One embodiment of the cosmetic product of the present invention can appropriately control the discharge level of the contents when using the contents. It exhibits a dispersible discharge function by means of tiny discharge holes radially formed on the surface of the rubber discharge pad. Even if the contents remain at the bottom of the container, the elasticity of the rubber discharge pad can be used to minimize the amount of residue. The rubber discharge pad covers the contents to prevent them from flowing out and has good portability. Furthermore, it provides the feeling of using a new product by preventing contact with external air and pollutants when using the product. Attached Figure Description

[0023] Figure 1 A schematic diagram of a cosmetic box container including a rubber discharge pad, which is a cosmetic product according to an embodiment of the present invention, is shown.

[0024] Figure 2-5 Schematic diagrams illustrating the rubber pads of a cosmetic product according to an embodiment of the present invention;

[0025] Figure 6 Photographs of the conventional powder compact makeup box (Comparative Example 1) in Table 1;

[0026] Figure 7 Photographs of the cosmetic box containing the sieve (Comparative Example 2) in Table 1;

[0027] Figure 8 Photographs of the airless cosmetic box (Comparative Example 3) in Table 1;

[0028] Figure 9 The image shown is a photograph of the cosmetic case containing the rubber discharge pad (Example 1) in Table 1. Detailed Implementation

[0029] Exemplary embodiments will now be described to enable those skilled in the art to readily implement the present invention.

[0030] On one hand, the present invention provides a cosmetic product comprising a rubber discharge pad made of a rubber material having radially distributed discharge holes, through which contents are discharged.

[0031] The term “cosmetic product” as used herein may refer only to the container itself used to hold the contents (also referred to as a ‘cosmetic composition’ or ‘cosmetic agent’), or it may refer to the combination of the container used to hold the contents and the contents contained therein.

[0032] According to one embodiment, the rubber is not particularly limited to any elastic rubber that exhibits rubber elasticity at room temperature (20-30°C). The rubber may be at least one rubber selected from acrylonitrile-butadiene rubber (NBR), fluorinated NBR, hydrogenated NBR, silicone rubber, NBR-silicone composite rubber, styrene-butadiene rubber (SBR), polychloroprene rubber (CR), isoprene-isobutylene rubber (IIR), butadiene rubber (BR), isoprene rubber (IR), ethylene propylene rubber (EPR), ethylene propylene diene monomer (EPDM) rubber, thermoplastic elastomers, polysulfide rubber, fluororubber, polyurethane rubber, polyester rubber, polyether rubber, chlorosulfonated polyethylene rubber, acrylic acid, and olefins.

[0033] Preferably, the rubber can be at least one substance selected from acrylonitrile-butadiene rubber (NBR), fluorinated NBR, hydrogenated NBR, silicone rubber, and NBR-silicone composite rubber.

[0034] The silicone rubber exhibits excellent elasticity and weather resistance, especially at high temperatures, showing minimal changes in strength and elongation.

[0035] The fluorinated NBR is a rubber with heat resistance and chemical resistance, and the NBR-silicone composite rubber is a composite rubber of NBR with high oil resistance and organosilicon plastic with high weather resistance.

[0036] The hydrogenated NBR (also known as "H-NBR") is produced by hydrogenating NBR, which is commonly used as a rubber with high oil resistance. While retaining the properties of NBR, it exhibits improved heat resistance, as well as improved weather resistance, ozone resistance, and abrasion resistance. Both dry and wet polyurethane rubbers exhibit high elasticity and demonstrate abrasion resistance, aging resistance, and oil resistance.

[0037] The styrene-butadiene rubber (SBR) has excellent aging resistance, heat resistance and abrasion resistance.

[0038] The polychloroprene rubber (CR) has high weather resistance, ozone resistance, heat aging resistance and oil resistance, as well as excellent chemical resistance and flame retardancy.

[0039] The isoprene-isobutylene rubber (IIR) exhibits low rebound elasticity but high impact absorption and excellent chemical resistance, weather resistance, heat resistance and ozone resistance.

[0040] The butadiene rubber (BR) exhibits excellent cold resistance and aging resistance due to its high elasticity and low internal heat generation. The ethylene propylene diene monomer (EPDM) rubber has excellent weather resistance, ozone resistance, heat resistance and low-temperature properties, and exhibits high resistance to water vapor, chemicals and durability to temperature and humidity.

[0041] Specific embodiments of the thermoplastic elastomer may include polypropylene / ethylene propylene diene monomer (PP / EPDM), polyamide, etc. The polysulfide rubber exhibits excellent oil resistance, aging resistance, and ozone resistance.

[0042] The polyurethane rubber may include wet polyurethane or dry polyurethane.

[0043] The polyester may include: aliphatic polyester rubbers, including biodegradable resins such as polylactic acid (PLA), poly-β-hydroxybutyrate (PHB), or polycaprolactone (PCL); and aromatic polyester rubbers, including polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polyethylene naphthalate (PEN).

[0044] The chlorosulfonated polyethylene rubber has excellent weather resistance, ozone resistance and chemical resistance.

[0045] The acrylic rubber (AR) has excellent heat resistance, oil resistance, weather resistance and ozone resistance.

[0046] Although there are no restrictions on the vent holes formed in the rubber vent pad, the vent holes can be formed by laser perforation. Laser perforation is used to form micropores.

[0047] Furthermore, the discharge holes formed in the rubber discharge pad are preferably radially distributed from the center of the rubber discharge pad to its edge.

[0048] According to another embodiment, the size of the discharge hole can be 0.005-2.5 mm, preferably 0.01-2.5 mm, and more preferably 0.5-1.0 mm. Here, the size of the discharge hole refers to its diameter or length. When the discharge hole has a size less than 0.005 mm, too small a amount of product will be discharged, resulting in uneven discharge. When the discharge hole has a size greater than 2.5 mm, too much product will be discharged, reducing the dispersing function of the makeup applicator (powder puff or brush), thus leading to insufficient makeup effect. Therefore, since the product is discharged through the discharge hole of the rubber discharge pad, the discharge hole needs to have a size within the aforementioned range to provide the function of controlling an appropriate amount of product.

[0049] According to another embodiment of the present invention, in a unit area of ​​1 cm 2 The number of discharge holes present can be 1-50, preferably 3-50, and more preferably 5-30. When the unit area is 1 cm² 2 When the number of discharge holes inside is less than one, a very small amount of contents will be discharged. When the unit area is 1 cm² 2When the number of discharge holes is greater than 50, excessive contents will be discharged, which may affect the burst strength.

[0050] Figure 2-5 Rubber discharge pads containing discharge holes according to the present invention are shown respectively. Figure 2 An embodiment of a rubber discharge pad with non-circular and generally linear discharge holes of the same discharge hole size is shown. Figure 3 An embodiment of a rubber discharge pad is shown, in which the size of the discharge holes increases from the outside to the inside of the pad. Although the discharge holes shown in the figures have a linear shape, the shape of the discharge holes is not particularly limited to a specific shape, such as a circle, a linear shape, etc. Furthermore, Figure 4 An embodiment is shown where circular discharge holes are radially distributed by a rubber discharge pad. Figure 5 Another embodiment of the circular discharge holes is shown, which are radially distributed by a rubber discharge pad.

[0051] According to another embodiment of the present invention, the rubber discharge pad may have a circular or polygonal shape, such as a triangle, quadrilateral, or pentagon, but is not limited thereto. The rubber discharge pad may have a shape that varies with the shape of the container.

[0052] According to another embodiment of the present invention, when the unit area of ​​the rubber discharge pad is 1 cm² 2 When a longitudinal force is applied, the rubber discharge pad can have an elongation of 1%-500%, preferably 200-500%. When the rubber discharge pad has an elongation of less than 1%, it exhibits poor flexibility and ease of use. When the rubber discharge pad has an elongation of more than 500%, it exhibits excessive flexibility, which may affect the size of the discharge orifice.

[0053] According to another embodiment of the present invention, the rubber discharge pad may have a Shore A hardness of 10A or higher and a Shore D hardness of 75D or lower. In particular, the rubber discharge pad preferably has a Shore A hardness of 10-100A and a Shore D hardness of 10-75D.

[0054] The hardness was measured using a Type A hardness tester (circumferential) according to ASTM D2240. When the rubber pad has a Type A Shore hardness of less than 10A, it is too soft to provide sufficient elasticity. When the rubber pad has a Type D Shore hardness greater than 75D, it is too hard to apply a sufficient amount of material using an applicator. "Hardness" as used here refers to the resistance of an object to deformation when pressed against another object. Methods for measuring object hardness include Vickers hardness, Brinell hardness, Rockwell hardness, and Shore hardness. This invention uses a method for measuring Shore hardness, where a higher number before the Shore hardness mark indicates higher hardness. Shore types are classified based on the indenter as A, B, C, D, DO, O, OO, OOO, and M. The measurement principle involves marking the degree of rebound after piercing the object with various types of indenters as the hardness value. Type A Shore, using a blunt indenter, is applied to soft materials. Type D Shore, using a pointed indenter, is applied to hard materials.

[0055] In the cosmetic product of the present invention, the pressure applied to the rubber release pad by an applicator (such as a powder puff or brush) as a secondary material for applying the contents is approximately 300 g.f to 1.5 kg.f. Typically, the pressure applied to the rubber release pad by the powder puff is approximately 300-600 g.f. When the pressure is slightly stronger, the pressure is approximately 1-1.5 kg.f.

[0056] According to another embodiment of the present invention, the rubber discharge pad may have a thickness of 0.05-2 mm, preferably 0.5-1 mm. When the thickness of the rubber discharge pad is less than 0.05 mm, it is too thin to provide good rubber properties. When the thickness of the rubber discharge pad is greater than 2 mm, it is too thick to provide a container with sufficient locking capability.

[0057] According to another embodiment of the present invention, the rubber discharge pad may have a strength of 20 kg / cm². 2 Tensile strength of 20-100 kg / cm or higher is preferred. 2 More preferably 50-90 kg / cm 2 When the rubber discharge pad has a strength of less than 20 kg / cm² 2 When the tensile strength is low, it is too fragile to be used as a padding material.

[0058] According to yet another embodiment of the invention, the rubber discharge pad may further include a border surrounding it.

[0059] The cosmetic product of the present invention releases its contents through the discharge hole of the rubber discharge pad, thereby controlling the discharge amount by adjusting the size of the discharge hole. The contents are picked up by contacting the applicator with the contents released through the discharge hole, and then the applicator coated with the contents is brought into contact with the skin to apply the cosmetic product of the present invention.

[0060] According to another embodiment of the invention, the contents may have a viscosity of 3,000-100,000 cps, preferably 8,000-25,000 cps. This wide range of viscosity indicates that the cosmetic products of the present invention can use various types of contents. The viscosity of the contents can be measured using a viscometer. For example, according to one embodiment, the viscosity can be measured using an LVDV II+PRO or RVDV III ULTRA, a 29-axis shaft, and a speed of 5 rpm or 12 rpm, but is not limited thereto.

[0061] The contents of the cosmetic product of the present invention are not particularly limited. For example, the contents may include at least one selected from toners, lotions, astringents, nourishing lotions, moisturizing lotions, nourishing lotions, massage creams, nourishing creams, moisturizing creams, foundations, primers, eyeshadows, and blushes containing colorants, and may also be sunscreens used in the above formulations. Furthermore, the contents may be in liquid, cream, semi-solid, solid, or powder form.

[0062] Furthermore, the liquid contents can be a water-dispersible liquid, an oil-dispersible liquid, a water-in-oil (W / O) liquid, or an oil-in-water (O / W) liquid.

[0063] The rubber discharge pad used in this invention has the following characteristics:

[0064] 1) Chemical resistance: The rubber discharge pad will not react with chemicals (alcohols, oils, etc.) and cause swelling, erosion, deformation, pigment leaching, etc.

[0065] 2) Contents compatibility: When cosmetic agents are present, the rubber discharge pad will not cause swelling, deformation, pigment leaching, dissolution, or cosmetic agent precipitation.

[0066] 3) Abrasion resistance: The rubber pad will not be corroded or permanently deformed by friction with an applicator such as a brush or powder puff.

[0067] 4) Anti-toxicity: The rubber discharge pad does not contain substances harmful to the environment, such as heavy metals or phthalates.

[0068] According to another aspect of the invention, the cosmetic product of the invention can be a container comprising the rubber discharge pad, wherein the container can subsequently contain contents.

[0069] According to another aspect of the invention, the cosmetic product of the invention can be a container comprising the rubber discharge pad, wherein the container further comprises contents beneath the rubber discharge pad.

[0070] The cosmetic products of the present invention can be in the form of a cosmetic box, a jar, an airless form, a blown form, a tube, a bottle, etc., but are not limited thereto.

[0071] The cosmetic product of the present invention controls the discharge of contents to an appropriate amount through the discharge hole size of the rubber discharge pad, thereby maximizing the use of residual contents by utilizing the elasticity of the cosmetic product. Furthermore, the portion of the rubber discharge pad other than the discharge hole is sealed from the outside, thus providing a feeling of using a new product throughout use. The invention will be further illustrated below with examples. These examples and experiments are for illustrative purposes only and do not limit the scope of the invention.

[0072]

Example 1

[0073] The rubber discharge pad of the present invention uses hydrogenated NBR (H-NBR) and is a circular pad with a thickness of 0.5 mm, as shown in the images in Table 1 below. The rubber discharge pad has discharge holes radially distributed from the center to the edge, wherein the number of discharge holes is 20 per unit area of ​​1 cm². 2 The discharge port has a size of 0.7 mm.

[0074] A cosmetic case using the rubber discharge pad of the present invention, a conventional powder compact cosmetic case with similar usability, a cosmetic case containing a sieve, and an airless cosmetic case were compared, and then pay-off dispersibility and post-use residue were measured. The results are shown in Table 1. The pay-off dispersibility was measured as follows: when the powder puff, acting as a cosmetic applicator, contacts the contents and takes them up, how evenly the contents are dispersed on the powder puff is measured. The post-use residue was measured as follows: after the powder puff, acting as a cosmetic applicator, takes up the contents to the maximum extent, the amount of contents remaining in the container is measured, and then the ratio of the residue to the initial packaged amount of the contents is calculated. Comparative Example 1 is a powder compact sample with a hardness of 60 as measured by a Type D ASKER hardness tester, and Comparative Example 2 is a powder compact sample with a hardness of 250 as measured by a SunRheo meter CR-200D with an adapter diameter of 10 cm. The viscosities of Comparative Example 3 and Example 1 were determined using Brookfield Viscometer Model DV-II+ and shaft 29, respectively.

[0075] Table 1

[0076]

[0077] As shown in Table 1, the rubber discharge pad provides the highest dispersibility of the contents on the powder puff when the contents are picked up with the powder puff. Furthermore, the rubber discharge pad exhibits a reduced residue level after use compared to Comparative Examples 1, 2, and 3.

[0078] When the contents are picked up with a powder puff, compared to Examples 1, 2, and 3, the contents are clump-like, resulting in lower feed dispersion. Furthermore, when the contents are applied to the skin in clumps using the skin applicator, additional time is required for the contents to spread evenly. Conversely, when using the cosmetic case of the present invention, which includes a rubber discharge pad (H-NBR), high feed dispersion is exhibited, and the contents are evenly applied to the skin without clumping. Regarding the amount of residue after use, the conventional cosmetic case, the cosmetic case with a sieve, and the airless cosmetic case exhibit 30% and 60% residue, respectively. Therefore, the conventional cosmetic case and the cosmetic case with a sieve leave the contents on the edges of their respective containers, which are difficult to use. When using the airless cosmetic case, due to its structural characteristics, a certain amount of residual contents is retained within the cosmetic case structure. Conversely, the cosmetic case of the present invention, which includes a rubber discharge pad (H-NBR), can easily use the residual contents left on the edge of the container by means of the pull of the rubber, thus leaving less residue.

[0079]

Example 2

[0080] Different materials were used to provide rubber discharge pads to determine the recovery force and expansion strain rate of each material (Examples 1-14): silicone rubber, fluorinated NBR, NBR-silicone composite rubber, H-NBR, wet polyurethane rubber, dry polyurethane rubber, polysulfide rubber, styrene-butadiene rubber (SBR), chloroprene rubber (CR), butadiene rubber (BR), isoprene-isobutylene rubber (IIR), ethylene propylene rubber (EPR), chlorosulfonated polyethylene rubber (HYPALON rubber (CSM)), and acrylic (AR). The recovery force was determined as follows: a rubber discharge pad was mounted on a container, and a circular applicator (applying device) with a diameter of 4 cm was pressed into the center of the rubber sheet to a depth of 1 cm and held for 10 seconds. The time required for the pad to return to its initial shape was then measured. Furthermore, the expansion strain rate refers to the strain rate caused by the expansion of the rubber pad material due to the cosmetic agent. The expansion strain rate was determined as follows: each rubber pad was immersed in 20 g of cosmetic agent, and the rubber pad material was placed at 55°C for a predetermined time. The weight change was then measured. The results are shown in Tables 2 and 3 below.

[0081] Table 2

[0082]

[0083] Table 3

[0084]

[0085] Among these rubber emission pad materials, silicone rubber, fluorinated NBR, NBR-silicone composite rubber, and H-NBR exhibit high resilience, maximizing the use of the container's contents and thus reducing residue levels. Furthermore, silicone rubber, fluorinated NBR, NBR-silicone composite rubber, and H-NBR demonstrate good expansion strain rates. Therefore, silicone rubber, fluorinated NBR, NBR-silicone composite rubber, or H-NBR are more suitable for controlling emissions and reducing residue levels.

Claims

1. A cosmetic product comprising: Rubber discharge pads; and The contents beneath the rubber discharge pad, in, The rubber discharge pad is made of rubber material with discharge holes, through which the contents below the rubber discharge pad are discharged, and the portion of the rubber discharge pad other than the discharge holes is sealed from the outside. The rubber discharge pad has a thickness of 0.05-2 mm, and The rubber is selected from at least one rubber chosen from fluorinated acrylonitrile-butadiene rubber (fluorinated NBR), hydrogenated NBR, silicone rubber, and NBR-silicone composite rubber. The discharge port has a size of 0.005-2.5 mm, and When the unit area of ​​the rubber discharge pad is 1cm 2 When a longitudinal force is applied, the rubber discharge pad has an elongation of 200%-500%, and the rubber discharge pad has a Shore A hardness of 10A or higher and a Shore D hardness of 75D or lower.

2. The cosmetic product according to claim 1, characterized in that, The discharge hole has a unit area of ​​1 cm². 2 The memory capacity is between 1 and 50.

3. The cosmetic product according to claim 1, characterized in that, The discharge hole is formed by laser perforation.

4. The cosmetic product according to claim 1, characterized in that, The rubber discharge pad has a circular or polygonal shape.

5. The cosmetic product according to claim 1, characterized in that, The rubber discharge pad has a strength of 20 kg / cm². 2 Tensile strength of 1 or above.

6. The cosmetic product according to claim 1, characterized in that, The rubber discharge pad further includes a border surrounding it.

7. The cosmetic product according to claim 1, characterized in that, The contents have a viscosity of 3,000-100,000 cps.

8. The cosmetic product according to claim 1, characterized in that, The cosmetic product further comprises liquid, cream, semi-solid, solid, or powder contents.

9. The cosmetic product according to claim 1, characterized in that, The contents include at least one selected from toners, lotions, astringents, nourishing lotions, moisturizing lotions, nourishing lotions, massage creams, nourishing creams, moisturizing creams, foundations containing colorants, primers, eyeshadows, and blushes.

10. The cosmetic product according to claim 1, characterized in that, The cosmetic products are provided in the form of cosmetic boxes, jars, airless forms, blow forms, tubes, or bottles.

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