KR102714336B1 - Cosmetic composition carrier - Google Patents

Abstract

The present specification describes a cosmetic composition carrier. The cosmetic composition carrier can provide a carrier having excellent bonding strength and easy content filling through ultrasonic or thermal bonding, including a carrier having a laminated structure.

Description

Cosmetic composition carrier {Cosmetic composition carrier}

This specification describes a cosmetic composition carrier.

The global market for cushion compact cosmetics, which contain a liquid cosmetic composition in a carrier and are placed in a compact-type container, is expanding. A carrier suitable for such cushion compact cosmetics is required to have the following properties: the cosmetic composition can be easily filled; the composition can be uniformly supported for a long period of time; an appropriate amount of the cosmetic composition can be uniformly discharged when taken from the carrier; and the discharge amount can be uniformly maintained for a long period of time until the contents are used up. In addition, since it is a cosmetic product, aesthetic requirements such as color and design of the appearance must also be satisfied.

In order to satisfy these requirements, it is possible to consider a configuration in which the carrier has a layered structure so that the upper and lower carriers have different properties. However, when a generally known adhesive is used to attach carriers having different materials and/or properties to each other, the actual adhesive-applied and bonded area is small due to the porosity, so that the bonding durability may not be sufficient. In addition, when the adhesive strength is insufficient, a cosmetic composition may be contained inside and the bonded area may fall off when stored for a long time. Furthermore, when a large amount of adhesive is used to achieve sufficient adhesive strength, the porous structure of the carrier may be blocked, which may cause a problem in that the carrier cannot properly perform its function.

Republic of Korea Patent Publication No. 10-1738121

From one perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier capable of homogeneously supporting a cosmetic composition.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier capable of homogeneously supporting a cosmetic composition for a long period of time.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier from which an appropriate amount of the cosmetic composition is discharged when the cosmetic composition is taken out from the carrier.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier that can maintain excellent durability after containing a cosmetic composition therein.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier that can maintain excellent durability for a long period of time even when the cosmetic composition is repeatedly taken out from the carrier.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier capable of discharging a cosmetic composition in a uniform pattern even when the amount of the cosmetic composition contained in the carrier is reduced.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier that is easy to fill with a cosmetic composition.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier having excellent bonding strength of a multilayer structure.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier having an excellent appearance after carrying the cosmetic composition.

From another perspective, the problem that the present invention seeks to solve is to provide a cosmetic composition carrier capable of preventing overflow of the cosmetic composition from the bottom of the carrier.

In one embodiment, the present invention provides a cosmetic composition carrier having a joint formed at an edge,

The carrier comprises a laminated portion in which a plurality of polyurethane foams having different pore sizes, densities, thicknesses, and pore numbers are laminated.

A cosmetic composition carrier is provided.

In one aspect, the present invention can provide a cosmetic composition carrier capable of homogeneously supporting a cosmetic composition.

From another perspective, the present invention can provide a cosmetic composition carrier capable of homogeneously supporting a cosmetic composition for a long period of time.

From another perspective, the present invention can provide a cosmetic composition carrier from which an appropriate amount of the cosmetic composition is discharged when the cosmetic composition is taken out from the carrier.

From another perspective, the present invention can provide a cosmetic composition carrier capable of maintaining excellent durability after containing a cosmetic composition therein.

From another perspective, the present invention can provide a cosmetic composition carrier that can maintain excellent durability for a long period of time even when the cosmetic composition is repeatedly taken out from the carrier.

From another perspective, the present invention can provide a cosmetic composition carrier capable of discharging a cosmetic composition in a uniform pattern even when the amount of the cosmetic composition contained in the carrier is reduced.

From another perspective, the present invention can provide a cosmetic composition carrier that is easy to fill with a cosmetic composition.

From another perspective, the present invention can provide a cosmetic composition carrier having excellent bonding strength of a multilayer structure.

From another perspective, the present invention can provide a cosmetic composition carrier having an excellent appearance after carrying the cosmetic composition.

From another perspective, the present invention can provide a cosmetic composition carrier capable of preventing overflow of the cosmetic composition from the bottom of the carrier.

Figure 1 is a cross-sectional schematic diagram of a carrier according to one embodiment of the present invention.
Figure 2 is a cross-sectional schematic diagram of a carrier according to one embodiment of the present invention.
Figure 3 is a cross-sectional schematic diagram of a carrier according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing the specifications of a carrier according to one embodiment of the present invention.
Figure 5 is a planar schematic diagram of a carrier according to an embodiment of the present invention.
Figure 6 is a cross-sectional photograph of a carrier according to an embodiment of the present invention.
Figure 7 is a comparative photograph of the carrier bonding results of Example 1 and Comparative Example 1.
Figure 8 is a photograph showing the result of filling a cosmetic composition into the carrier of Comparative Example 2 of Test Example 4.
Figure 9 is a photograph comparing the appearance of the carrier after filling with the cosmetic compositions of Example 1 and Comparative Example 3.
Figure 10 is a graph showing the amount of cosmetic product dispensed according to the number of dispenses.
Figure 11 is a photograph of the applicator according to the number of discharges. The number shown in the first picture indicates the number of discharges.
Figure 12 is a photograph of a carrier according to an embodiment of the present invention.
Figure 13 is an external photograph of the carrier of Example 2, in which the carrier is tilted 45 degrees relative to a plane parallel to the layer.
Figure 14 is an external photograph of the carrier of Example 2, taken from the flat side (top) of the carrier.
Figure 15 is a photograph of the appearance of the carrier of Example 2, taken from the side of the carrier.
Figure 16 is an external photograph of the carrier of Example 2, taken from the bottom side of the carrier.
Figure 17 is an external photograph of the carrier of Example 3, in which the carrier is tilted 45 degrees relative to a plane parallel to the layers.
Figure 18 is an external photograph of the carrier of Example 3, taken from the flat side (top) of the carrier.
Figure 19 is a photograph of the appearance of the carrier of Example 3, taken from the side of the carrier.
Figure 20 is an external photograph of the carrier of Example 3, taken from the bottom side of the carrier.
Figure 21 is a photograph of the appearance of the carrier of Example 3, which is a photograph of the carrier cut so that the cross-section is exposed.
Figure 22 is a photograph of the appearance of the carrier of Example 4, which is a photograph of the carrier cut so that the cross-section is exposed.
Figure 23 is a graph showing the amount of cosmetic product dispensed according to the number of dispenses.

Hereinafter, embodiments of the present application will be described in more detail with reference to the attached drawings. However, the technology disclosed in the present application is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments introduced herein are provided so that the disclosed content can be thorough and complete and so that the spirit of the present application can be sufficiently conveyed to those skilled in the art. In order to clearly express each component in the drawings, the size of the component, such as the width or thickness, is somewhat enlarged. In addition, for the convenience of explanation, only a part of the component is illustrated, but those skilled in the art will be able to easily understand the remaining parts of the component. In addition, those skilled in the art will be able to implement the spirit of the present application in various other forms without departing from the technical spirit of the present application.

In this specification, the term “impregnating material” means something that can absorb and contain a cosmetic composition inside, and may also be expressed as “carrier,” “carrier,” or “medium.” In one example, the impregnating material can be used by discharging a substance contained inside it to a separate application port.

In this specification, the term “application tool” means something used to deliver a cosmetic composition to the skin or the like as an application target, and may also be expressed as “application means,” “application sponge,” or “applicator.” In one example, the applicator may include a puff, a tip, a brush, or the like.

In this specification, the viscosity may be measured using a Brookfield Viscometer Model DV3T at a temperature of 30°C, with a spindle of 64 and an rpm of 12 for 1 minute.

In this specification, an “open cell” refers to a cell contained in a foam, which is entirely open; a “semi-open cell” refers to a cell in which at least a portion of the cell is open; a “closed cell” refers to a cell in which at least a portion of the cell is closed; and a “reticulated structure” refers to a structure formed through a reticulation process that removes cell walls within a closed-cell, semi-open-cell, or open-cell foam, such that the structure has a mesh-like structure with almost no cell walls. The closed cell is a structure in which the cell structure in the state in which the pores are foamed is maintained in the form of small balloons, and thus air is not permeable. The reticulated structure has a structure in which the membrane (wall) of the balloon-shaped pore cells is removed by reticulation after foaming, so that not only air is permeable, but also absorption and discharge of liquids are possible.

In this specification, “polyurethane foam” refers to polyurethane that has been foamed and then solidified, and may also be expressed as “urethane foam.”

In this specification, “pore size” may be the average value of the diameter of the pores, i.e. cells, of the foam as measured using an optical microscope (NIKON ECLIPSE 80i).

In this specification, “pore count” means the number of cells within a unit line of the foam. The pore count refers to the number of pores per inch (ppi) of the foam, and means the number of pores existing within a 1-inch line.

In this specification, the “hardness” of the foam refers to the hardness as measured by an ASKER (manufacturer) DUROMETER HARDNESS measuring instrument (Type F), and means the hardness before the cosmetic composition is impregnated in the foam.

The properties required as an impregnating material include, for example, absorbency, filling capacity, carrying capacity, durability, and discharge capacity.

In this specification, absorbency means that the impregnating material absorbs the cosmetic composition and uniformly carries it throughout the entire interior of the impregnating material. High absorbency means excellent compatibility between the impregnating material and the cosmetic composition, and the higher the absorbency, the more the evaporation of the cosmetic composition can be suppressed when stored under high temperature conditions.

In this specification, the filling ability means that when the cosmetic composition is filled into the impregnating material, the cosmetic composition is easily and uniformly supported throughout the entire interior of the impregnating material. Excellent filling ability means that when the cosmetic composition is filled under the same conditions and pressure, the cosmetic composition is filled uniformly at a fast rate.

In this specification, the carrying capacity refers to the ability of the impregnating agent to hold and maintain a cosmetic composition. Excellent carrying capacity refers to maintaining a state in which the cosmetic composition is uniformly carried for a long period of time. The carrying capacity of the impregnating agent is distinguished from temporarily being taken out to an applicator for delivering a cosmetic composition or temporarily being buried in an applicator.

In this specification, durability includes chemical durability and physical durability. Chemical durability means a property of the impregnating material to maintain its initial state without damage such as melting or tearing or deformation such as expansion when the impregnating material is left at a certain temperature for a certain period of time in a state in which a cosmetic composition is impregnated. Physical durability means a property of withstanding physical stimuli to the impregnating material, for example, pressure and friction applied to the impregnating material when an applicator repeatedly contacts and applies pressure to the impregnating material to extract the cosmetic composition. Therefore, high durability means that the impregnating material can be maintained for a long period of time under certain conditions without deformation or damage in a state in which the cosmetic composition is impregnated, and can maintain its original state without damage or deformation of the impregnating material even when repeatedly subjected to physical friction and pressure by the applicator.

In this specification, the discharge ability means the ability of a cosmetic composition contained within an impregnating agent to be discharged in an appropriate amount when used. For example, the discharge ability can be expressed as the amount of cosmetic composition that is applied to an applicator when the applicator is contacted with the impregnating agent at a certain pressure. If the discharge ability is too high or too low, the cosmetic composition may be excessively applied or only an excessively small amount may be applied, which may be inconvenient to use. Therefore, it is desirable to have an appropriate discharge ability so that an appropriate amount of cosmetic composition can be discharged depending on the pressure applied to the impregnating agent.

A cosmetic composition carrier according to one embodiment of the present invention may include a laminated portion in which a plurality of polyurethane foams are laminated, and may have a joint formed at an edge.

FIG. 1 is a schematic cross-sectional view of a cosmetic composition carrier according to one embodiment of the present invention. The cosmetic composition carrier (100) according to the present embodiment includes a laminated portion including a plurality of polyurethane foams (110, 120), and a joint portion (140) indicated by a hatching at the edge of the foam is formed to integrally join the laminated portion.

The laminate may include two or more polyurethane foams. In one example, the laminate may include a plurality of polyurethane foams laminated one or more having different pore sizes, densities, thicknesses, and pore numbers.

The above polyurethane can be produced by the reaction of a polyol having two or more hydroxyl groups and a polyisocyanate. The polyol can be a polyether polyol, a polyester polyol, a polycarbonate polyol, or a polyolefin polyol, and depending on the polyol used, it is classified into a polyether-based polyurethane foam, a polyester-based polyurethane foam, a polycarbonate-based polyurethane foam, or a polyolefin-based polyurethane foam.

In the case where a single foam having the same properties is included as a carrier, there is a problem that the discharge amount of the cosmetic composition contained therein becomes uneven depending on the time of use. Specifically, the amount decreases as the cosmetic composition contained therein is consumed compared to the initial use, and the discharge amount may drop sharply after the cosmetic composition has consumed about 50% or more by weight of the initial use. In addition, in the case where a single foam is included as a carrier, since the pore size is relatively large, a different amount of the cosmetic composition may be discharged each time the discharge is repeated, and the discharge pattern may not be uniform. In the cosmetic composition according to an embodiment of the present invention, since at least one of pore size, density, thickness, and pore number is different from each other, the discharge amount of the cosmetic composition can be maintained uniformly compared to the case of the single foam described above until 50% or more of the weight of the initial use is used.

The above laminated portion may comprise multiple layers, specifically 2 to 20, more specifically 2 to 10, and even more specifically 2 to 5, of polyurethane foams.

The above laminated portion may include a polycarbonate-based polyurethane foam in the uppermost layer when the surface side, that is, the direction in which the cosmetic composition is discharged from the carrier when used, is referred to as the upper side. In the schematic diagram of Fig. 1, the polyurethane foam (110) and in the schematic diagrams of Figs. 2 to 4, the polyurethane foam (210) correspond to this.

The above polycarbonate-based polyurethane foam can exhibit high physical properties such as chemical resistance and durability compared to polyether-based and polyester-based polyurethane foams. Since it corresponds to a use portion where a cosmetic composition is discharged during use, it can be used for a long period of time without deformation due to its excellent durability even if physical contact is repeated to take out the cosmetic composition.

The above cosmetic composition is impregnated into the pores of the carrier and discharged by an external force. At this time, if the cell structure of the foam in which the pores are formed is a closed cell, impregnation and discharge of the cosmetic composition cannot occur. Therefore, the polycarbonate-based polyurethane foam preferably has an open cell, semi-open cell, or reticular structure, except in the case where it is 100% closed cell, and such a cell structure may include some closed cells depending on the manufacturing method of the foam foam. Most preferably, by using a foam foam having a reticular structure, the absorption capacity, loading capacity, and discharge capacity of the cosmetic composition can be increased. The open cell, semi-open cell, and reticular structure foam can be confirmed by cutting a cross-section and taking a photograph.

The pore size of the above polycarbonate-based polyurethane foam may be 50 ㎛ or more, 55 ㎛ or more, 60 ㎛ or more, 65 ㎛ or more, 70 ㎛ or more, 75 ㎛ or more, 80 ㎛ or more, 85 ㎛ or more, 90 ㎛ or more, 95 ㎛ or more, 100 ㎛ or more, 105 ㎛ or more, or 110 ㎛ or more, and 500 ㎛ or less, 450 ㎛ or less, 400 ㎛ or less, 350 ㎛ or less, 300 ㎛ or less, 250 ㎛ or less, 200 ㎛ or less, 190 ㎛ or less, 180 ㎛ or less, 170 ㎛ or less, 160 ㎛ or less, 150 ㎛ or less, 140 ㎛ or less, 130 ㎛ or less, or 120 ㎛ or less, for example, 50 to 500 ㎛, or 100 to 300 ㎛. The above-mentioned micro pore size can be used to provide excellent holding capacity and discharge capacity. Since the cosmetic composition is disposed on the discharged surface side, the above-mentioned micro pore size can be used to uniformly discharge the cosmetic composition. If the pore size is less than the above-mentioned range, the amount held is insufficient and the discharge capacity is reduced, so that a sufficient amount of the cosmetic composition is not discharged. If the pore size exceeds the above-mentioned range, it is difficult to expect the desired uniform discharge capacity, and the surface of the foam can become rough, so that the feeling of use during the cosmetic extraction process may not be smooth.

In one example, the pore size of the polycarbonate-based polyurethane foam may be smaller than that of the polyurethane foam of the lower layer.

The density of the above polycarbonate-based polyurethane foam is 0.05 g/cm3 or more, 0.06 g/cm3 or more, 0.07 g/cm3 or more, 0.08 g/cm3 or more, 0.09 g/cm3 or more, 0.10 g/cm3 or more, 0.11 g/cm3 or more, 0.12 g/cm3 or more, 0.13 g/cm3 or more, 0.14 g/cm3 or more, 0.15 g/cm3 or more, or 0.16 g/cm3 or more, and 0.25 g/cm3 or less, 0.24 g/cm3 or less, 0.23 g/cm3 or less, 0.22 g/cm3 or less, 0.21 g/cm3 or less, 0.20 g/cm3 or less, 0.19 g/cm3 or less. It may be 0.18 g/cm3 or less, or 0.17 g/cm3 or less, for example, 0.05 to 0.25 g/cm3, or 0.1 to 0.2 g/cm3. If the density is less than the above range, the cosmetic composition may be discharged in too large an amount, which may reduce usability, and if the density is more than the above range, the pores into which the cosmetic composition can be impregnated may be insufficient, making it difficult to fill the cosmetic composition, and the cosmetic composition may not be discharged well.

In one example, the density of the polycarbonate-based polyurethane foam may be greater than that of the polyurethane foam of the lower layer.

The number of pores of the polycarbonate-based polyurethane foam may be 80 ppi or more, 85 ppi or more, 90 ppi or more, 95 ppi or more, 100 ppi or more, 105 ppi or more, 110 ppi or more, 115 ppi or more, or 120 ppi or more, and 170 ppi or less, 165 ppi or less, 160 ppi or less, 155 ppi or less, 150 ppi or less, 145 ppi or less, 140 ppi or less, 135 ppi or less, or 130 ppi or less, for example, 80 to 170 ppi or 110 to 150 ppi. If the number of pores of the foam is less than the above range, the elasticity of the foam is reduced and it is difficult to control the fluidity of the cosmetic composition, and if the number of pores exceeds the above range, the durability may be reduced during use.

In one example, the number of pores in the polycarbonate-based polyurethane foam may be greater than that of the polyurethane foam in the lower layer.

The hardness of the above polycarbonate-based polyurethane foam may be 50 or more, 55 or more, 60 or more, 61 or more, 62 or more, 63 or more, 64 or more, 65 or more, 66 or more, 67 or more, 68 or more, 69 or more, or 70 or more, and 90 or less, 89 or less, 88 or less, 87 or less, 86 or less, or 85 or less, based on the ASKER hardness tester Type F, and may have a hardness of, for example, 50 to 90. If the hardness is less than the above range, the cosmetic composition impregnated in the polyurethane foam may be excessively discharged when taking out the cosmetic composition, and if the hardness exceeds the above range and is too hard, the cosmetic composition may not be easily discharged.

The above polycarbonate-based polyurethane foam may be a wet polycarbonate-based polyurethane foam manufactured by wet foaming.

In one example, the wet method of manufacturing polyurethane foam by wet foaming may include mixing raw materials to become the materials of the polyurethane foam, foaming the mixture to form a foam block, and quenching the foam block. The quenching may include impregnating the foam block in a container filled with a liquid (chemical), and then quenching it through a chemical action.

Polyurethane foam meshed by a wet process exhibits soft characteristics and enables the formation of fine pores, so that a cosmetic composition can be uniformly discharged.

Wet polyurethane foams, which are generally manufactured by a wet process, tend to have low durability, chemical resistance, and chemical resistance, and thus there is a risk of deformation or damage when supporting a cosmetic composition for a long period of time, and there is a risk of physical deformation or damage due to repeated extraction of the cosmetic composition. The carrier according to an embodiment of the present invention uses a polycarbonate-based polyurethane foam in the uppermost layer, and thus has excellent chemical resistance, chemical resistance, and excellent physical durability, and can provide a carrier that has fine pores and is soft, but can be used for a long period of time without deformation or damage.

The above laminated portion may include one or more polyurethane foams below the uppermost layer, which are hereinafter referred to as lower layers. In the schematic diagram of Fig. 1, the polyurethane foam (120) and in the schematic diagrams of Figs. 2 to 4, the polyurethane foam (220) correspond to this.

The above lower layer may include a polyether-based polyurethane foam. The above lower layer can stably support a cosmetic composition and provide excellent elasticity to the entire carrier. In addition, when a cosmetic composition is filled from the lower part, the lower layer can exhibit excellent filling ability, and has excellent absorbency and holding ability for absorbing and retaining a sufficient amount of the cosmetic composition. The polyether-based polyurethane foam is advantageous in terms of absorbency, holding ability and discharge ability as an impregnating material, and has a larger pore size than the polyester-based polyurethane foam, thus increasing air permeability, and providing a softer feel and superior softness, and in addition to having good flexibility and elasticity, it has excellent durability and does not exhibit a phenomenon of breaking or tearing even in an environment with high temperature or large temperature changes.

Polyether-based polyurethane foams have higher compatibility with water-in-oil type cosmetic compositions than polyester-based polyurethane foams, and thus polyether-based polyurethane foams have superior absorption capacity for water-in-oil type cosmetic compositions, so that the cosmetic composition does not easily evaporate, and thus the absorbency, carrying capacity, and durability can be significantly superior to polyester-based polyurethane foams.

The above cosmetic composition is impregnated into the pores of the carrier and discharged by an external force. At this time, if the cell structure of the foam in which the pores are formed is a closed cell, impregnation and discharge of the cosmetic composition cannot occur. Therefore, the polyether-based polyurethane foam preferably has an open cell, semi-open cell, or reticular structure, except in the case where it is 100% closed cell, and such a cell structure may include some closed cells depending on the production of the foam. Most preferably, by using a foam having a reticular structure, the absorption capacity, loading capacity, and discharge capacity of the cosmetic composition can be increased.

The pore size of the above polyether-based polyurethane foam is 200 ㎛ or more, 250 ㎛ or more, 300 ㎛ or more, 310 ㎛ or more, 320 ㎛ or more, 330 ㎛ or more, 340 ㎛ or more, 350 ㎛ or more, 360 ㎛ or more, 370 ㎛ or more, 380 ㎛ or more, 390 ㎛ or more, 400 ㎛ or more, 410 ㎛ or more, 420 ㎛ or more, 430 ㎛ or more, 440 ㎛ or more, or 450 ㎛ or more, and 800 ㎛ or less, 750 ㎛ or less, 700 ㎛ or less, 650 ㎛ or less, 600 ㎛ or less, 590 ㎛ or less, 580 ㎛ or less, 570 ㎛ or less, 560 ㎛ or less, 550 ㎛ or less, 540 ㎛ or less, 530 ㎛ or less, 520 ㎛ or less, 510 ㎛ or less, It may be 500㎛ or less, 490㎛ or less, 480㎛ or less, 470㎛ or less, or 460㎛ or less, and for example, 200 to 800㎛ or 300 to 600㎛. If the pore size is less than the above range, the carrying capacity is reduced, and if it exceeds the above range, it is difficult to stably carry the cosmetic composition for a long time.

In one example, the polyether-based polyurethane foam may have a larger pore size than the top layer. Through this differentiation in pore size, a cosmetic composition can be stably supported in a sufficient amount in the lower layer, while the cosmetic composition can be uniformly and appropriately discharged in the top layer.

The density of the above polyether-based polyurethane foam may be 0.015 g/cm3 or more, 0.020 g/cm3 or more, or 0.025 g/cm3 or more, and 0.05 g/cm3 or less, 0.045 g/cm3 or less, 0.040 g/cm3 or less, or 0.035 g/cm3 or less, for example, 0.01 to 0.05 g/cm3, or 0.02 to 0.04 g/cm3. When the density is less than the above range, it is difficult to stably support the cosmetic composition, and when the density exceeds the above range, the filling of the cosmetic composition may not be easily achieved.

In one example, the polyether-based polyurethane foam may have a lower density than the top layer. Due to this difference in density, the cosmetic composition can be easily filled in the lower layer, and the cosmetic composition can be stably supported in a sufficient amount, while the amount of cosmetic composition discharged can be appropriately controlled in the top layer.

The pore number of the polyether-based polyurethane foam may be 40 ppi or more, 45 ppi or more, 50 ppi or more, 55 ppi or more, 60 ppi or more, 65 ppi or more, 70 ppi or more, or 75 ppi or more, and 120 ppi or less, 115 ppi or less, 110 ppi or less, 105 ppi or less, 100 ppi or less, 95 ppi or less, 90 ppi or less, 85 ppi or less, or 80 ppi or less, for example, 40 to 120 ppi or 60 to 100 ppi. If the pore number of the foam is less than the above range, the elasticity of the foam is reduced and it is difficult to control the fluidity of the cosmetic composition, and if the pore number exceeds the above range, the durability may be reduced during use.

In one example, the polyether-based polyurethane foam may have a smaller number of pores than the top layer. By means of a multilayer structure having such a difference in the number of pores, a sufficient amount of cosmetic composition can be stably supported in the lower layer while providing appropriate elasticity to the carrier, and the amount of cosmetic composition discharged can be appropriately controlled in the top layer.

The hardness of the above polyether-based polyurethane foam may be 50 or more, 55 or more, 60 or more, 61 or more, 62 or more, 63 or more, 64 or more, 65 or more, 66 or more, 67 or more, 68 or more, 69 or more, 70 or more, 71 or more, 72 or more, or 73 or more, and 90 or less, 89 or less, 88 or less, 87 or less, 86 or less, 85 or less, 84 or less, 83 or less, 82 or less, 81 or less, 80 or less, 79 or less, 78 or less, or 77 or less, based on the ASKER hardness tester Type F, and may have a hardness of, for example, 50 to 90. If the hardness is below the above range, the cosmetic composition impregnated in the polyurethane foam may be excessively discharged when the cosmetic composition is taken out, and if the hardness is too hard exceeding the above range, the cosmetic composition may not be easily discharged.

The above polyether-based polyurethane foam may be a dry polyether-based polyurethane foam manufactured by dry foaming.

In one example, the dry method of manufacturing polyurethane foam by dry foaming may include mixing raw materials to become the materials of the polyurethane foam, foaming the mixture to form a foam block, and injecting gas into the foam block to form a mesh.

Polyether-based polyurethane foams meshed by a dry process have larger pore sizes than those meshed by a wet process. In addition, the surface properties of dry polyether-based polyurethane foams exhibit lipophilicity.

In one specific example, the dry method and the wet method may include the following processes.

1. Prepare raw materials and set up raw materials

This is the process of preparing the necessary raw materials after setting the raw materials and formulation that are suitable for the characteristics of the product to be produced. Typically, 10 to 40 raw materials are added depending on the characteristics of the product. This is a process that requires precision because the properties of the product vary depending on the extremely small differences in the input amounts of each raw material.

2. Mixing and discharging of set raw materials

This is the process in which the set raw materials are mixed in the calculated quantity in each tank in a mixer (mixing head) and then discharged, and requires the precise input amount of the raw materials mentioned above and the mixing process (time).

3. Foaming and maturation of the discharged mixture

This is the process in which the mixture discharged from the mixer (mixing head) to the tray (foaming shelf) is foamed and matured. The discharged mixture is foamed into a block of a planned size over a period of about 2 to 3 minutes, and the outer surface (more than 3 sides) of the formed block is sliced (the process of removing the hardened outer surface) for the maturation process. This is the process to discharge the internal heat and gas created by the chemical reaction during the foaming process, and it takes about 18 hours. This is because if the complete maturation process is not completed, the internal cell structure and size may become deformed.

4. Reticulation of the completed foam block

The foam completed through the aging process can be sold as a finished product in a closed-cell/semi-open cell form, and depending on the use, it is molded into an open-cell product through a reticulation process. This is a process that bursts the cell surface of the foam so that only the frame remains, making it an easy "reticulation" process. Generally, the reticulation method is divided into the gas explosion (zapping) method and the quenching method, and these are usually classified as "dry sponge" and "wet sponge".

4-1. The gas blasting (zapping) method can be used to manufacture dry polyurethane foam by placing a foam block in a gas chamber, injecting gas, and then blasting it to form a mesh.

4-2. Quenching is a process mainly used in the production of soft foam products, where foam blocks are immersed in a container filled with liquid (chemical) and then quenched through chemical action.

That is, the above-described impregnation network method comprises the steps of mixing a mixture containing as main components a water-curable polyurethane, a solvent, a water-soluble inorganic salt granule, and a surfactant to obtain a mixed material, defoaming the mixed material to obtain a defoamed mixed material, molding the defoamed mixed material to obtain a molded material, putting the molded material into water or an aqueous solution and then solidifying it to form a coagulated material, dissolving the inorganic salt from the coagulated material into water to form a coagulated material, dissolving and removing the inorganic salt from the coagulated material, and drying the resulting solution, thereby obtaining a polyurethane foam having a membrane structure. In addition, depending on whether a surfactant is used, a polyurethane foam having a network structure is obtained.

Because the liquid used varies depending on the characteristics of the foam material (polycarbonate, formulation, etc.), it can be seen as a very expensive process, and can only be produced for a very small number of soft products.

In one embodiment, the carrier may further include a mesh-structured fiber layer on the back side, that is, the lower side of the laminated portion, that is, the opposite side to the surface side from which the cosmetic composition is discharged. FIG. 2 shows a cross-sectional schematic diagram of a carrier according to the present embodiment. The cosmetic composition carrier (200) according to the present embodiment includes a laminated portion including a plurality of polyurethane foams (210, 220) and a mesh-structured fiber layer (230), and a joint portion (240) indicated by hatching at the edge of the foam is formed so as to integrally join the laminated portion and the mesh-structured fiber layer.

The above mesh structure fiber layer can provide excellent bonding strength when bonded with the above laminated portion, thereby providing a carrier with excellent durability and chemical durability over time against physical contact or repeated use.

In one example, the mesh-structured fiber layer has a coarse mesh structure that enhances bonding strength when placed at the bottom, and does not hinder absorption of the cosmetic composition when the cosmetic composition is filled from below, unlike a porous foam, thereby facilitating filling of the cosmetic composition in the lower layer.

The above mesh-structured fiber layer may include a mesh-structured fiber fabric forming holes with fibers. For example, the fiber may include at least one of natural fibers or synthetic fibers. The fiber may be provided as a natural fiber, but is not limited thereto, and may include at least one of antibacterial cellulose, natural pulp, loofah, ramie, ramie (plant), ayate (rough skin of agave or palm tree), algae, bamboo, sisal, sisal terry (sisal terry, a fabric woven with sisal to absorb moisture well like a towel), konjac, Tencel (TM) fiber fabric (Tencel fiber with natural antibacterial function made from eucalyptus tree), cotton, and abaca fiber.

Synthetic fibers may include, but are not limited to, at least one of nylon, spandex, polyester, polyacetate, cashmere fiber (a synthetic fiber whose main component is acrylonitrile CH2=CH-CN fiber, i.e., acrylic fiber), comfort fiber, polytrimethylene terephthalate fiber, polyethylene, polypropylene, polyacrylate, PLA (polylactic acid), and polylactic acid-based composite fiber (eco-friendly and biodegradable).

The hole shape of the above mesh structure fiber layer may be circular, triangular, square, pentagonal, hexagonal, etc., but is not limited thereto.

The hole size of the above mesh structure fiber layer may be 0.3 mm or more, 0.4 mm or more, 0.5 mm or more, 0.6 mm or more, 0.7 mm or more, 0.8 mm or more, 0.9 mm or more, or 1.0 mm or more, and 1.8 mm or less, 1.7 mm or less, 1.6 mm or less, 1.5 mm or less, 1.4 mm or less, or 1.3 mm or less, for example, 0.3 to 1.8 mm or 0.5 to 1.5 mm. The hole size may be an average value of the longest diameters of single holes. When the hole size is less than the above range, it is not easy to fill the cosmetic from the bottom, and when it exceeds the above range, the bonding of the edge joint may not be formed or the bonding strength may be weakened.

The fiber thickness of the fiber layer of the above mesh structure is 10 denier or more, 15 denier or more, 20 denier or more, 25 denier or more, 30 denier or more, 35 denier or more, 40 denier or more, 45 denier or more, 50 denier or more, 55 denier or more, 60 denier or more, 65 denier or more, or 70 denier or more, and 200 denier or less, 190 denier or less, 180 denier or less, 170 denier or less, 160 denier or less, 150 denier or less, 140 denier or less, 130 denier or less, 120 denier or less, 110 denier or less, 100 denier or less, 95 denier or less, 90 denier or less, 85 denier or less, 80 denier or less, or 85 denier or less, for example, 10 to 200 denier, For example, it can be 20 to 100 denier.

The thickness (t3) of the above mesh structure fiber layer may be 0.1 mm or more, 0.15 mm or more, 0.2 mm or more, 0.25 mm or more, or 0.3 mm or more, and 0.5 mm or less, 0.45 mm or less, 0.4 mm or less, or 0.35 mm or less, for example, 0.1 to 0.5 mm, specifically, 0.2 to 0.4 mm. Within the above range, the filling of the cosmetic composition can be facilitated while achieving the bonding strength of the bonding portion. Fig. 4 illustrates the thickness (t3) of the mesh structure fiber layer.

The carrier may include a bonding member (140, 240, 340) that bonds a layer included in the carrier to an edge.

Figure 3 is another cross-sectional schematic diagram of a cosmetic composition carrier according to one embodiment of the present invention. As an example, a structure including a mesh-structured fiber layer (230) is described, but is not limited thereto. The cosmetic composition carrier (200) according to the present embodiment may have a form in which a joint portion (240) indicated by a diagonal line formed at the edge of the foam is compressed compared to the central portion due to the joint.

FIG. 5 is a planar schematic diagram of a cosmetic composition carrier (300) according to one embodiment of the present invention, showing a joint portion (340) of an edge indicated by hatching.

In one specific example, the bonding can be performed by ultrasonic bonding. By means of the ultrasonic bonding, the disadvantages of using adhesives can be eliminated, and excellent durability can be exhibited through stable bonding of a multilayer structure.

In one specific example, the ultrasonic bonding may have remarkably excellent bonding strength by including the mesh structure fiber layer described above.

In one specific example, the bonding can be performed by thermal bonding. By means of the thermal bonding, the disadvantages of using an adhesive can be eliminated, and excellent durability can be exhibited through stable bonding of a multilayer structure.

In one specific example, the thermal bonding may have remarkably excellent bonding strength by including the mesh structure fiber layer described above.

The above joint may be formed at the edge of the carrier, and the width (Wd) of the joint may be 0.05 mm or more, 0.10 mm or more, 0.15 mm or more, 0.20 mm or more, 0.25 mm or more, 0.30 mm or more, 0.35 mm or more, 0.40 mm or more, 0.45 mm or more, 0.50 mm or more, 0.55 mm or more, 0.60 mm or more, 0.65 mm or more, 0.70 mm or more, 0.75 mm or more, 0.80 mm or more, 0.85 mm or more, 0.90 mm or more, 0.95 mm or more, or 0.10 or more, and 5.0 mm or less, 4.5 mm or less, 4.0 mm or less, 3.5 mm or less, 3.0 mm or less, 2.5 mm or less, 2.0 mm or less, or 1.5 mm or less, for example. It can be 0.05 to 5 mm, or 0.1 to 3 mm. If the width of the joint is less than the above range, the bonding strength may be weak, and if the width of the joint is more than the above range, the capacity to hold the cosmetic composition is small, so the product has no value.

The above joint can form a wing-like structure at the edge by joining, as exemplarily shown in FIG. 6 and FIG. 12, etc. When a cosmetic composition is placed in a container and a carrier is then placed in the container to absorb the cosmetic composition from the bottom of the carrier and fill it, the gap between the container wall and the carrier can be sealed by the joint to prevent or improve an overflow phenomenon in which the cosmetic composition that is not absorbed from the bottom overflows to the top of the carrier.

Fig. 4 illustrates the specifications of a carrier according to an embodiment of the present invention. The thickness of the foam may be measured as a layer thickness based on the bonding of the joint. The layer structure of Fig. 4 is illustrated as a structure including a mesh structure fiber layer (230) in order to comprehensively illustrate the carrier of embodiments of the present invention, but is not limited thereto.

In one example, if the thickness of the polycarbonate-based polyurethane foam used in the uppermost layer is too thick, the effect of the presence of the lower layer may be reduced, thereby lowering the effect of the present invention according to the multilayer structure of the laminated portion. In addition, since the uppermost layer has a greater effect on the discharge capacity of the carrier, it may be important to control the thickness of the upper layer.

The thickness (t1) of the above polycarbonate-based polyurethane foam is 0.1 mm or more, 0.2 mm or more, 0.3 mm or more, 0.4 mm or more, 0.5 mm or more, 0.6 mm or more, 0.7 mm or more, 0.8 mm or more, or 0.9 mm or more, or 1.0 mm or more, and may be 5.0 mm or less, 4.5 mm or less, 4.0 mm or less, 3.5 mm or less, 3.0 mm or less, 2.5 mm or less, 2.0 mm or less, or 1.5 mm or less, for example, 0.1 to 5 mm, or 0.5 to 2 mm. When the thickness is less than 0.1 mm, it is difficult to expect the desired uniform discharge power, and there may be a problem with durability, and when it exceeds 5 mm, it may be difficult to discharge the cosmetic, and the effects of stable loading in the lower layer and imparting elasticity and softness may be reduced by half.

In one example, the thickness (t1) of the polycarbonate-based polyurethane foam may be thinner than the thickness (t2) of the polyurethane foam of the lower layer.

The thickness (t2) of the above polyether-based polyurethane foam may be 3 mm or more, 4 mm or more, 5 mm or more, 6 mm or more, or 7 mm or more, and 15 mm or less, 14 mm or less, 13 mm or less, 12 mm or less, 11 mm or less, 10 mm or less, or 9 mm or less, for example, 3 to 15 mm, or 5 to 10 mm. If the thickness is less than the above range, the capacity capable of containing the cosmetic composition is small, so the product has no value, and if it exceeds the above range, the container becomes thick, which reduces the convenience of carrying, and it is difficult to use the cosmetic composition until the end, so that a large amount of the cosmetic composition may remain.

In one example, the thickness (t2) of the polyurethane foam of the lower layer may be thicker than the thickness (t1) of the upper layer. Due to the difference in thickness, a sufficient amount of cosmetic composition may be stably supported in the lower layer, and appropriate elasticity and soft feeling may be imparted to the entire carrier, while appropriate discharge control of the upper layer may be implemented to maximize the effectiveness as a multilayer structure.

In one example, the carrier may further include a primer layer disposed between one or more layers of the laminate and between the laminate and the mesh-structured fiber layer.

The above primer layer may include at least one of a hot melt nonwoven web, a hot melt mesh, a spray adhesive layer, an oil-based adhesive layer, and a water-based adhesive layer. When a hot melt film is used, it may block the pores of the carrier and inhibit absorption or discharge of the cosmetic composition, so a nonwoven hot melt web is suitable. The material of the hot melt web may be at least one of polyester, polyethylene, and polyurethane, and the melting temperature may be 80°C to 120°C. If melting occurs below the above range, the high-temperature stability of the product may be affected in the future, and if it exceeds the above range, the laminated portion and the mesh-structured fiber layer of the carrier may be subjected to heat stress during the hot melt process, resulting in physicochemical deformation. In one example, the oil-based adhesive may be a mixture of a urethane-based adhesive and acetic acid as a solvent, and the water-based adhesive may be a urethane-based adhesive, but is not limited thereto.

The thickness of the above primer layer may be 0.01 to 1.0 mm. Within the above range, the interlayer bonding strength can be improved without impeding absorption and discharge of the cosmetic composition.

In one example, the diameter (Wt) and the total thickness (T) of the carrier may vary depending on the cosmetic container. The diameter (Wt) of the carrier may be 30 mm to 70 mm or 40 mm to 60 mm, and the discharge amount of the impregnated cosmetic composition may be appropriate within the above range. The total thickness (T) of the carrier may be 1 mm to 50 mm, for example, 5 mm to 30 mm, 6 mm to 29 mm, 7 mm to 28 mm, 8 mm to 27 mm, 9 mm to 26 mm, or 10 mm to 25 mm. If the thickness is less than the above range, the amount of the cosmetic composition supported may be small, and if it exceeds the above range, it may be difficult to discharge the contents without a residual amount of the contents when used.

In one example, the carrier may further include a cutout inside. For example, the cutout may be formed in a plane parallel to the layer of the carrier. For example, the cutout may be formed in a plane perpendicular to the thickness direction of the carrier. For example, the cutout may be formed in a form parallel to the layer of the carrier so that an internal void is formed.

In this specification, the cut portion may be formed by cutting a portion of the carrier, or may be formed by non-bonded laminated layers, and the expression “cut portion” is not intended to limit the forming method to cutting.

Fig. 22 is a photograph of an example of a carrier according to the present embodiment. Specifically, Fig. 22 is a photograph of a carrier including a cut portion according to the present embodiment cut to expose a cross-section, and it can be confirmed that a cavity is formed inside the carrier.

In one specific embodiment, the cutout may be formed in a laminate comprising a plurality of polyurethane foams among the carriers. For example, the cutout may be formed in one or more of the interior of the foam in the uppermost layer, the interior of the foam in the lower layer, between the plurality of foams in the uppermost layer, between the plurality of foams in the lower layer, or between the foams in the uppermost layer and the lower layer.

In one specific example, the cut portion may be formed with a length excluding the joint portion (Wd) from the diameter (Wt) based on the cross-section of the carrier. The length may be expressed as the diameter of the area where the cut portion is formed based on the cross-section with reference to FIG. 3.

In one specific embodiment, the cut portion may serve to store and/or retain the cosmetic composition carried by the carrier. A large amount of the cosmetic composition may be carried in the cavity of the cut portion. The cosmetic composition may be more stably discharged from the carrier by including the cut portion. The amount of the cosmetic composition carried and/or discharged in the carrier of the cosmetic composition may be controlled by including the cut portion. The discharge amount of the cosmetic composition may be controlled to be appropriate within a desired range by including the cut portion. For example, the discharge amount of the cosmetic composition may be increased by including the cut portion compared to when the cut portion is not present.

In one specific embodiment, the incision may include an air layer by the cavity.

In one specific example, the carrier includes a cut portion so that when pressure is applied to the carrier and then the pressure is removed, the compressed carrier can recover more slowly. In this way, the cut portion can affect the elasticity felt when pressing and using the carrier, thereby providing a soft cushioning feeling.

The above cosmetic composition carrier may be for impregnating and supporting a flowable cosmetic composition.

In one specific embodiment, the cosmetic composition carrier has a viscosity of 5000 cps or more, 6000 cps or more, 7000 cps or more, 8000 cps or more, 9000 cps or more, 10000 cps or more, 11000 cps or more, 12000 cps or more, 13000 cps or more, 14000 cps or more, 15000 cps or more, 16000 cps or more, 17000 cps or more, 18000 cps or more, 19000 cps or more, or 20000 cps or more, and 30000 cps or less, 29000 cps or less, 28000 cps or less, 27000 cps or less, 26000 cps or less, 25000 cps or less, 24000 cps or less, It may be a carrier for a cosmetic composition having a viscosity of 23,000 cps or less, 22,000 cps or less, or 21,000 cps or less. For example, the composition may exhibit a viscosity of 5,000 cps to 30,000 cps, or 8,000 cps to 25,000 cps.

In one example, the cosmetic composition may be an emulsified composition, specifically a water-in-oil-in-water (W/O/W) emulsified composition, an oil-in-water-in-oil (O/W/O) emulsified composition, a water-in-oil (W/O) emulsified composition, an oil-in-water (O/W) emulsified composition, a dispersion composition, or specifically an oil-in-water or water-dispersed composition.

In one specific example, the composition according to the present embodiment may be a water-in-oil (W/O) type emulsified composition. The cosmetic composition may be applied to various types of cosmetics having flowability in the water-in-oil type, such as makeup primers, makeup bases, skin covers, foundations, lipsticks, lip glosses, liquid eye shadows, eyebrows, liquid concealers, and liquid blushers. In one example, the cosmetic composition may be delivered to the skin as an application target through hands or an applicator.

The above-described water-in-oil type emulsifying composition can be prepared by any emulsifying method used in the art. In one specific example, the emulsifying may include preparing an oil phase and an aqueous phase and mixing them. The mixing is not particularly limited, but a common mixer, homogenizer, homogenizer, or high-pressure homogenizer used in the cosmetics manufacturing field can be used. The stirring speed during the mixing can be variously changed depending on the device used and the composition content.

In one embodiment of the present invention, a cosmetic comprising a cosmetic composition carrier according to one embodiment of the present invention described above and a cosmetic composition impregnated in the carrier can be provided.

The above cosmetic may further include a container for storing a carrier impregnated with the above cosmetic composition. The container may be a compact-type container.

The carrier may be separable from the container, and the user may fill the cosmetic composition as desired into the container from which the carrier has been separated, and then combine the carrier to use it. In addition, the user may use it by replacing only the carrier.

The above cosmetic may further include a carrier and a separate applicator.

In one specific embodiment, the container can accommodate the carrier and the applicator.

In one specific example, the cosmetic can be used by applying the cosmetic composition impregnated in the carrier to the application target by applying it to the applicator. In this case, the cosmetic composition does not get on the hands when applied, making it convenient to use and hygienic.

The material and shape of the applicator are not limited, but when applying the cosmetic composition to the skin, it should be applied smoothly without leaving marks such as lines or dots, so it is preferable that the pores are fine, and it is soft and cushiony because it comes into direct contact with the skin. In one example, the applicator may use a foam material. When applying the cosmetic composition to the skin with the applicator, the applicator may temporarily hold the cosmetic composition, which may cause a damp and uncomfortable feeling when applied, and there is a possibility that the cosmetic composition that was temporarily absorbed into the applicator and exposed to the outside may be applied to the skin again. Therefore, it is advantageous that the applicator does not excessively absorb the cosmetic composition, and it is preferable that the material of the applicator does not expand when the cosmetic composition is applied. In addition, the applicator needs to be able to easily take out the cosmetic composition impregnated in the carrier, be easily applied to the skin, and exhibit excellent usability when applied to the skin.

In one specific embodiment, the applicator may be a foam made of one or more selected from the group consisting of acrylonitrile butadiene rubber (NBR), styrene butadiene rubber (SBR), natural rubber (NR), polyvinyl chloride, polyethylene, ethylene-vinylacetate butyl rubber (EVA), latex, silicone, styrene-isoprene-styrene (SIS), styrene-ethylene-butylene-styrene (SEBS), polyvinyl alcohol (PVA), nitrile rubber, butyl rubber, chloroprene rubber (Neoprene®), polyolefin, and polyurethane.

Hereinafter, the present invention will be described in detail with reference to examples, comparative examples, and test examples. These are presented only as examples to more specifically explain the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples, comparative examples, and test examples.

[Experimental Example 1] Preparation of water-in-oil (W/O) type emulsion composition

A W/O emulsion composition for foundation was prepared using a conventional method in the art with the composition shown in Table 1 below and used in the carrier experiment of the present invention. The viscosity of the prepared cosmetic composition was 12,500 cps.

division function Raw material name Content Paid Emollient Cyclopentasiloxane*Cyclohexasiloxane Remaining amount Emollient Phenyl trimethicone 7 Sunscreen Ethylhexyl methoxycinnamate 7 Emulsifier PEG-10 Dimethicone 4 Emulsifier Lauryl PEG-9 polydimethylsiloxyethyl dimethicone 2 Dispersant Acrylates/Ethylhexyl Acrylate/Dimethicone Methacrylate Copolymer 4 Powder phase Thickener Disteardimonium hectorite 0.7 coloring agent Titanium dioxide*Zinc oxide*Iron oxide*Methyl methacrylate crosspolymer 20 premier solvent Purified water 30 Moisturizer Butylene glycol 5 Ion sequestering agent Disodium EDTA 0.05 Emulsion stabilizer Sodium chloride 0.8 Preservative Phenoxyethanol 0.3

[Test Example 2] Preparation of cosmetic composition carrier

1. Wet polycarbonate polyurethane foam

Wet polycarbonate-based polyurethane foam was purchased as Grade 256-W1 from Technoporous Korea Co., Ltd. The characteristics of the wet polycarbonate-based polyurethane foam used in the manufacture of the carrier are described below.

Top floor Pore size (㎛) 110 Density (g/cm3) 0.17 Pore count (ppi) 120 Hardness (ASKER type F) 70 Diameter (mm) 55 Thickness (mm) 1

2. Dry polyether polyurethane foam

Dry polyether polyurethane foam was purchased and used as Foamtec's EZ93N grade. The characteristics of the dry polyether polyurethane foam used in the production of the carrier are described below.

Lower floor Pore size (㎛) 450 Density (g/cm3) 0.03 Pore count (ppi) 80 Hardness (ASKER type F) 75 Diameter (mm) 55 Thickness (mm) 8

3. Mesh structure fiber layer

The mesh structure fiber layer was purchased from Ilsongtex Co., Ltd. and used fabric with the following characteristics.

mesh 1 mesh 2 mesh 3 Item No. IST-1363 IST-1250 IST-1436 texture 85% Nylon, 15% Spandex 83% Nylon, 17% Spandex 100% Polyester Hole size (mm) 1 2 0.1 Fiber thickness (denier) 70 100 50 Diameter (mm) 55 55 55 Thickness (mm) 0.3 0.4 0.2

Using the foam and fiber layers of Tables 2 to 4 above, wet polycarbonate-based polyurethane foam, dry polyether-based polyurethane foam, and mesh-structured fiber layer were sequentially laminated from the upper layer, and the edges were bonded at a frequency of 26.5 to 39 kHz using an ultrasonic device from Kyungil Ultrasonic Industry Co., Ltd. to manufacture a cosmetic composition carrier according to Table 5 below. Example 1-1 is a carrier including wet polycarbonate-based polyurethane foam and dry polyether-based polyurethane foam from the upper layer without a mesh-structured fiber layer. The wet polycarbonate-based polyurethane foam and the dry polyether-based polyurethane foam were bonded using an oil-based adhesive (urethane + acetic acid (solvent)).

Comparative Example 3 used a single layer of dry polyether-based polyurethane foam of Test Example 2 without a layer structure.

Example 1 Example 1-1 Comparative Example 1 Comparative Example 2 Comparative Example 3 (top floor)
Wet polycarbonate polyurethane foam Top floor Top floor Top floor Top floor
(No layer structure)
(Lower layer)
Dry polyether polyurethane foam Lower floor Lower floor Lower floor Lower floor Mesh structure fiber layer mesh 1 mesh 2 mesh 3

[ Exam example 3] mesh structure The fiber layer Joint evaluation according to hole size

The cosmetic composition carrier of Example 1 was manufactured using a mesh-structured fiber layer with a hole size of 1 mm, whereas Comparative Example 1 was manufactured using a mesh-structured fiber layer with a hole size of 2 mm. A photograph of the cosmetic composition carrier is shown in Fig. 6.

As shown in Fig. 7, if the mesh hole size becomes larger than 2 mm, the area to be bonded during edge ultrasonic bonding becomes smaller, so the bonding is not done properly and the bonded area easily falls off.

[Test Example 4] Evaluation of filling of cosmetic composition

15 g of the cosmetic prepared in Test Example 1 was placed in a container having a thickness of 10 mm and a diameter of 54 mm, the carrier of Comparative Example 2 was placed on top of the container, and the cosmetic composition was filled using a cylinder-type moisture absorption tool.

As shown in Fig. 8, if the mesh hole size is too small, such as 0.1 mm, a problem occurs in which the cosmetic composition is not properly filled from the bottom.

[Test Example 5] Evaluation of the appearance of a carrier containing a cosmetic composition

A cosmetic was manufactured by filling 15 g of the cosmetic manufactured in Test Example 1 into the carrier of Example 1 and Comparative Example 3.

As shown in Fig. 9, in Comparative Example 3, the pores appear shaded due to the large pore size, making the surface appear unsmooth, whereas in Example 1, the pore size is small, reducing the shade effect, making the color of the cosmetic composition appear brighter and more vivid.

[Example 6] Sensory evaluation

As in the above Test Example 5, the cosmetics of Example 1 and Comparative Example 3 filled with the cosmetic composition were taken out and used by 20 women aged 25 to 35 using an air cell (wet polyurethane foam) puff, and the preference for the appearance, whether it felt soft when taken out, and the appropriateness of the amount discharged were evaluated on a 5-point scale (1 point: very bad to 5 points: very good). The average values are shown in Table 6 below.

Appearance preference Softness when pulled out Emission Adequacy Example 1 4.6 4.7 4.5 Comparative Example 3 1.8 2.4 2.9

According to the above results, it can be confirmed that the carrier according to the present invention not only improves the preference for a bright appearance, but also exhibits excellent effects in terms of usability, such as a soft take-out feeling and an appropriate amount of cosmetic composition being discharged.

[Test Example 7] Evaluation of the emission pattern of cosmetic composition

An air cell (wet polyurethane foam) applicator (puff) was placed on the carrier of Example 1 and Comparative Example 3, which were manufactured by filling the cosmetic composition in the above Test Example 5, and a press machine (push-pull gauge) was used to press at 1.0 kgf/cm2 for 3 seconds so that the composition was discharged through the puff.

The results of comparing the discharge amount using a scale are shown in Figure 9.

As shown in the results of Fig. 10, in the case of Comparative Example 3, there is a large deviation depending on the number of discharges, whereas in the case of Example 1, a uniform discharge pattern is observed.

In addition, Fig. 11 shows pictures of puffs according to the number of discharges. As can be seen from the pictures of Fig. 11, it can be seen that the composition discharged through the carrier of Example 1 is evenly applied to a wider area of the applicator than that of Comparative Example 3 on the surface of the discharged applicator. From this, it can be seen that the carrier according to the embodiment of the present invention exhibits a uniform discharge pattern not only in the discharge amount of the composition but also in the discharged surface, thereby exhibiting the effect of enabling uniform application when used.

[Test Example 8] Preparation of cosmetic composition carrier

Using the same materials as Example 1 of the above Test Example 2, wet polycarbonate-based polyurethane foam, dry polyether-based polyurethane foam, and mesh-structured fiber layer were laminated in that order from the upper layer, and the edges were bonded at a frequency of 26.5 to 39 kHz using an ultrasonic device from Kyungil Ultrasonic Industry Co., Ltd., to manufacture a cosmetic composition carrier of Example 2. The appearance of the manufactured carrier of Example 2 is shown in FIGS. 13 to 16.

Example 3 was manufactured using the same materials as Example 1 of Test Example 2, except that the thickness of the dry polyether-based polyurethane foam was 6 mm, and the wet polycarbonate-based polyurethane foam and the dry polyether-based polyurethane foam were bonded to each other using an oil-based adhesive (urethane + acetic acid (solvent)). Specifically, the wet polycarbonate-based polyurethane foam, the dry polyether-based polyurethane foam, and the mesh-structured fiber layer were laminated in that order from the upper layer, and the edge was heat-bonded at 0.3 mm using an advanced precision hydraulic press (heating) under the conditions of a hydraulic pressure of 60 to 100 kg/cm2 and a temperature of 180 to 200°C, thereby manufacturing the cosmetic composition carrier of Example 3. The appearance of the manufactured carrier of Example 3 is shown in FIGS. 17 to 20. FIG. 21 is a photograph showing the carrier of Example 3 cut to expose its cross-section.

Example 4 was manufactured in the same manner as Example 3, except that two layers of 3 mm thick dry polyether-based polyurethane foam were laminated. The appearance of the manufactured carrier of Example 4 is shown in Fig. 22, which is an image of the carrier cut to expose its cross-section, and it can be seen that a cut portion has been formed inside.

[Test Example 9] Evaluation of the emission pattern of cosmetic composition

Cosmetics were manufactured by filling 15 g of the cosmetic manufactured in Test Example 1 into the carriers of Examples 3 and 4.

An air cell (wet polyurethane foam) applicator (puff) was placed on the carrier, and a press machine (push-pull gauge) was used to press at 1.0 kgf/cm2 for 3 seconds so that the composition was discharged through the puff. The results of comparing the discharge amount using a scale are shown in Table 7 and Fig. 23.

From the results in Table 7 and Fig. 23, it can be confirmed that a larger amount is evenly discharged in the case of the carrier including the incision of Example 4.

Number of discharges Discharge (g) Example 3 Example 4 1 0.4 0.52 2 0.24 0.36 3 0.26 0.26 4 0.32 0.32 5 0.22 0.24 6 0.18 0.22 7 0.16 0.2 8 0.14 0.18 9 0.1 0.14 10 0.1 0.14 11 0.08 0.14 12 0.08 0.06 13 0.06 0.08 14 0.08 0.06 15 0.04 0.08 16 0.04 0.1 17 0.06 0.1 18 0.08 0.06 19 0.04 0.04 20 0.02 0.04

Claims (17)

As a cosmetic composition carrier having a joint formed at the edge,
The above carrier is,
A laminate comprising a plurality of polyurethane foams having different pore sizes, densities, thicknesses, and pore counts,
The carrier further comprises a mesh-structured fiber layer,
Cosmetic composition carrier. In the first paragraph,
A cosmetic composition carrier, wherein the above-mentioned joint is formed by ultrasonic bonding or thermal bonding the edge of the cosmetic composition carrier. In the first paragraph,
A cosmetic composition carrier having a width (Wd) of the above joint of 0.05 to 5 mm. In the first paragraph,
A cosmetic composition carrier, wherein the laminated portion comprises a wet polycarbonate-based polyurethane foam in the uppermost layer. In the first paragraph,
The above laminated portion includes a top layer and a lower layer disposed below the top layer,
A cosmetic composition carrier, wherein the lower layer comprises a dry polyether-based polyurethane foam. In the first paragraph,
A cosmetic composition carrier, wherein the polyurethane foam of the uppermost layer of the above laminated portion has a pore size of 50 to 500 μm. In the first paragraph,
A cosmetic composition carrier, wherein the polyurethane foam of the above laminated portion has a network-like structure. In the first paragraph,
The above laminated portion includes a top layer and a lower layer disposed below the top layer,
The polyurethane foam of the uppermost and lower layers is a cosmetic composition carrier that satisfies at least one of the conditions (a) to (d) below:
(a) the polyurethane foam of the uppermost layer has a smaller pore size than the polyurethane foam of the lower layer,
(b) the polyurethane foam of the uppermost layer has a higher density than the polyurethane foam of the lower layer, or
(c) the polyurethane foam of the uppermost layer is thinner than the polyurethane foam of the lower layer,
(d) The polyurethane foam of the top layer has a greater number of pores per inch (ppi) than the polyurethane foam of the lower layer. delete In the first paragraph,
A cosmetic composition carrier, wherein the mesh structure fiber layer is arranged at the lower part of the laminated portion. In the first paragraph,
A cosmetic composition carrier, wherein the mesh-structured fiber layer comprises at least one fiber selected from the group consisting of antibacterial cellulose, natural pulp, loofah, ramie, ramie (plant), ayate, algae, bamboo, sisal, sisal terry, konjac, Tencel (TM) fiber fabric, cotton, abaca fiber, nylon, spandex, polyester, polyacetate, cashmere fiber, comfort fiber, polytrimethylene terephthalate fiber, polyethylene, polypropylene, polyacrylate, PLA (polylactic acid), and polylactic acid-based composite fiber (eco-friendly biodegradable). In the first paragraph,
A cosmetic composition carrier, wherein the mesh structure fiber layer has a hole size of 0.3 mm to 1.8 mm. In the first paragraph,
A cosmetic composition carrier, wherein the mesh structure fiber layer has a fiber thickness of 10 to 200 denier. In the first paragraph,
A cosmetic composition carrier, wherein the carrier further includes a cut portion forming an internal void in a direction parallel to the layers of the carrier. In the first paragraph,
A cosmetic composition carrier, wherein the carrier further includes a primer layer disposed between at least one of the layers of the laminated portion and between the laminated portion and the mesh-structured fiber layer. In Article 15,
A cosmetic composition carrier, wherein the primer layer comprises at least one of a hot melt nonwoven web, a hot melt mesh, and a spray adhesive layer. In the first paragraph,
The cosmetic composition carrier is an emulsified composition.

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