CN111867421A

CN111867421A - Sponge for impregnating a cosmetic composition provided with through-hole channels

Info

Publication number: CN111867421A
Application number: CN201980001013.1A
Authority: CN
Inventors: 安叡喜; 朴星美; 李和映; 朴明三; 金熙溶
Original assignee: Cosmax Inc
Current assignee: Cosmax Inc
Priority date: 2019-02-26
Filing date: 2019-03-26
Publication date: 2020-10-30
Also published as: KR102286122B1; KR20200103999A; WO2020175730A1

Abstract

The object of the present invention is to provide a sponge block for impregnating a liquid-phase cosmetic composition, which provides good fluidity when impregnating and discharging the cosmetic composition. The present invention provides a sponge block of a reticulated cell structure for impregnation with a liquid-phase cosmetic composition, which has foam cell channels and includes a plurality of through-hole channels that vertically penetrate the sponge block.

Description

Sponge for impregnating a cosmetic composition provided with through-hole channels

Technical Field

The present invention relates to an impregnated material comprising a liquid phase cosmetic composition. More particularly, the present invention relates to a porous impregnated sponge formed with through-holes.

Background

Generally, cosmetic products have limitations in applying their contents due to the limitations of the container. In particular, for a cosmetic product in a liquid phase, there is a limitation in providing a feeling of use when selecting a viscosity according to the type of container.

For example, in the case of a foundation for air foundation (cushionfoundation), the role of the impregnating material is very important, and therefore a cosmetic composition having a suitable fluidity range is selected. The viscosity of the cosmetic composition having fluidity capable of impregnating or promoting discharge in such air-cushion foundation is about 5,000 to 15,000cps, which is very limited.

For this reason, in order to change the sense of use of the product, new attempts have been made to change the configuration of the container or of the infusion material.

Therefore, more research into containers capable of realizing a sense of use according to the preference of consumers is required.

Detailed description of the invention

Technical problem

In order to solve the above-mentioned problems of the prior art, it is an object of the present invention to provide a sponge block for impregnating a liquid-phase cosmetic composition, which provides good fluidity when impregnating and discharging the cosmetic composition.

Further, it is an object of the present invention to provide a cosmetic product having the above sponge block.

Means for solving the problems

In order to solve the above technical problems, the present invention provides a sponge block of a reticulated cell structure for impregnation with a liquid-phase cosmetic composition, which has foam cell channels and includes a plurality of through-hole channels vertically penetrating the sponge block.

In the present invention, it is preferable that the sponge block has a number of holes of 70 to 120 ppi. Further, preferably, the sponge block has a density of 1.0 to 3.0 pcf.

Further, in the present invention, it is preferable that the diameter of the through-hole passage is 0.7 to 2mm, and the density of the through-hole passage per unit area of the sponge block is 0.5 to 3.3 units/cm²。

In the present invention, at least a portion of the plurality of through-hole passages of the sponge block may have a length greater than a thickness of the sponge block. At this time, it is preferable that the length of the through-hole passage of the sponge block is at least 1 to 13% greater than the thickness of the sponge block.

Further, in the present invention, the center axis of at least a part of the plurality of through-hole passages of the sponge block may be inclined with respect to the center axis of the sponge block. At this time, it is preferable that the central axis of at least a part of the through-hole passage of the sponge block has an inclination angle of 1 to 30 ° with respect to the central axis of the sponge block.

In the present invention, the sponge block may be foamed polyurethane or foamed rubber.

Further, the present invention provides a cosmetic product comprising a cosmetic composition container body; and a sponge block of a reticular cell structure impregnated with a liquid-phase cosmetic composition and having a foaming porous channel mounted on the container body, wherein the cosmetic product is provided with a plurality of through-hole channels vertically penetrating the sponge block, and wherein the viscosity of the liquid-phase cosmetic composition is 15,000 to 40,000 cps.

Technical effects of the invention

According to the present invention, the present invention can provide a sponge block for impregnating a liquid-phase cosmetic composition, which provides good fluidity when impregnating and discharging the cosmetic composition.

Brief description of the drawings

FIG. 1 is a schematic illustration of a cosmetic product according to one embodiment of the present invention;

fig. 2(a) is a perspective view schematically showing the appearance of a sponge block according to an embodiment of the present invention, and fig. 2(b) is a schematic view schematically showing a cross section of the sponge block;

FIG. 3 is a schematic view showing a sponge block according to another embodiment of the present invention;

FIG. 4 is a view showing a force applied to the through-hole passage when the sponge block is pressurized; and

fig. 5(a) to (c) are photographs of sponge blocks having various patterns of through-hole passages fabricated according to embodiments of the present invention.

Best Mode for Carrying Out The Invention

Hereinafter, the present invention will be described by explaining preferred embodiments of the invention with reference to the accompanying drawings.

Fig. 1 is a schematic view showing a cosmetic product according to one embodiment of the present invention.

As shown, the cosmetic product 10 includes a container body 11 for containing a liquid-phase cosmetic composition. The container body 11 contains a sponge block 100 for impregnating a liquid-phase cosmetic composition. As an example of the sponge block, the drawing shows a cylindrical block having a predetermined thickness and flat top and bottom surfaces, but the present invention is not limited thereto. Further, in the present invention, the sponge block may have a thickness of 5 to 30mm and 20 to 50cm³But the invention is not limited thereto.

In the present invention, the cosmetic product may include an inner cover 13 and/or an outer cover 15 to prevent the liquid phase cosmetic composition from leaking from the sponge block 100. Further, although not shown in the drawings, in order to prevent the separation of the sponge block, the cosmetic product may further include a fixing member for fixing the plurality of layers of the foaming impregnation material. This will be explained separately below.

In the present invention, the cosmetic composition may be a water-in-oil (W/O) type or oil-in-water (O/W) type emulsified or oil-dispersed cosmetic composition.

In the case where the cosmetic composition is an emulsified cosmetic composition, the cosmetic composition may have a viscosity of 5,000 to 40,000 cps. When the viscosity of the cosmetic composition is less than 5,000cps, the oil phase is separated from the water phase immediately after the emulsified product is prepared, and thus it is difficult to impregnate the composition in the form of a uniform composition in the sponge block. Preferably, the present invention provides a sponge block suitable for impregnating a cosmetic composition having a viscosity of 15,000 to 40,000 cps. This will be explained below.

Meanwhile, in the present invention, an airtight container may be used as the container body. The airtight container means a container having a sealing force. That is, the airtight container means a container having an improved sealing force, which prevents air from being introduced from the outside and prevents loss of internal volatile substances due to evaporation, so that external air is not introduced into the container, thereby preventing the lip product from being deteriorated or hardened due to the external air. For cosmetic products such as moisturizing foundations, moisturizing creams, eye shadows, and the like, there is a problem in that the cosmetics may deteriorate due to introduction of external air or evaporation of internal water or volatile components, and thus the cosmetics cannot be used for a long time. However, when the airtight container is used, it is possible to prevent external air from entering the container or to prevent evaporation of internal water or volatile components, and thus it is possible to use the cosmetics without deterioration while maintaining the quality thereof for a long period of time.

Fig. 2(a) is a perspective view schematically showing the appearance of a sponge block according to an embodiment of the present invention, and fig. 2(b) is a view schematically showing a section of the sponge block.

Referring to fig. 2, preferably, the sponge block 100 is a sponge having a three-dimensional reticulated cellular structure. The three-dimensional network-structured sponge has pores defined by cells of the three-dimensional network structure (support or filament) as a space for containing the cosmetic composition. The pores in the cell structure are interconnected to form pore channels. At this time, preferably, the average diameter of the pores forming the pore channels is about 100 to 600 μm, more preferably 150 to 500 μm. The fine pore passage serves as a capillary for the contained cosmetic composition, and the cosmetic composition is uniformly distributed in the pore passage.

For example, in the present invention, polyurethane foam may be used as a sponge of a three-dimensional network structure. As the polyurethane foam, an ether polyurethane foam, an ester polyurethane foam, or an ether/ester hybrid polyurethane foam may be used. The polyurethane foam may be prepared by processing a polyurethane formed by reacting a polyether polyol, a polyester polyol, or a mixture thereof with a compound having an isocyanate group into a foam form, or may be prepared by processing a polyurethane formed by reacting a hybrid copolymer of a polyether polyol and a polyester polyol with a compound having an isocyanate (-NCO) group into a foam form.

As another example, rubber foam may be used as a sponge for a three-dimensional reticulated cellular structure. As the rubber foam, Butadiene Rubber (BR), Styrene Butadiene Rubber (SBR), Natural Rubber (NR), acrylonitrile butadiene rubber (NBR), nitrile rubber, butyl rubber, or the like can be used.

In the present invention, the size of the cells of the three-dimensional network structure can be represented by the number of pores. When the sponge block is a foamed polyurethane foam, the number of pores of the foamed polyurethane foam may be 70 to 120ppi, 70 to 115ppi, 70 to 110ppi, 70 to 105ppi, 70 to 100ppi, 70 to 95ppi, 75 to 120ppi, 75 to 115ppi, 75 to 110ppi, 75 to 105ppi, 75 to 100ppi, or, for example, may be 75 to 95 ppi. When the number of pores is less than 70ppi, the elasticity of the foam is deteriorated, thereby decreasing the usefulness, and it becomes difficult to control the fluidity of the cosmetic composition. When the number of pores exceeds 120ppi, durability of use may deteriorate and usefulness of the contents may decrease. The number of wells is defined by the number of wells present in a 1 inch long sample. Specifically, the number of holes may be measured according to a standard such as JIS K6400-1.

In the present invention, the density of the foamed polyurethane foam may be 1.0 to 3.0pcf (pounds per cubic foot), 1.0 to 2.9pcf, 1.0 to 2.8pcf, 1.0 to 2.7pcf, 1.0 to 2.6pcf, 1.0 to 2.5pcf, 1.0 to 2.4pcf, 1.0 to 2.3pcf, 1.0 to 2.2pcf, 1.0 to 2.1pcf, or, for example, may be 1.0 to 2.0 pcf. When the density of the sponge block is less than 1.0, the cosmetic composition is smeared out too much, thereby decreasing the usefulness. When the density exceeds 3.0, there are not enough pores for impregnating the contents, and thus it is difficult to effectively impregnate the contents.

Further, in the present invention, when the sponge block is a foamed polyurethane foam, the hardness thereof may be 10 to 70. When the hardness is less than 10, the emulsified cosmetic composition impregnated in the foaming polyurethane foam drops too much when makeup is performed using a makeup tool for a foundation type makeup product or hands. When the hardness exceeds 70, the sponge mass is too hard, and the cosmetic composition is not easily exfoliated.

As shown in fig. 2, the sponge block 100 includes a plurality of through-hole passages 130. The through-hole passage 130 penetrates the entire thickness of the sponge block body 110 from the top surface to the bottom surface. In the present invention, the cross-section of the through-hole via 130 may be circular, square, or the like. In the present invention, it is preferable that the through-hole passage 130 of the sponge block 100 has a width (or diameter) of 0.7 to 2 mm. More preferably, the width of the through-hole channel is 1 to 2 mm. Further, in the present invention, the plurality of through-hole passages 130 may be arranged at predetermined intervals (d). Preferably, the spacing of the channels may be 3 to 10 mm.

Further, it is preferable that the density of the through-hole passages per unit area of the sponge block is 0.5 to 3.3 units/cm². When the density of the through hole channels is less than 0.5 unit/cm²It is difficult to distinguish the through-hole channels from the existing impregnating material. When the density of the through-hole channels exceeds 3.3 units/cm ²When this happens, the composition is smeared out too much, thus reducing the value of the product. In addition, water and volatile substances are easily evaporated due to the introduction of external air, thus making the contents more easily spoiled.

In the present invention, the through-hole via may be formed by various methods. For example, the through-hole channels may be formed by stamping, laser perforation, or the like.

In the present invention, the through-hole passage can improve the fluidity of the cosmetic composition having a high viscosity of 15,000 to 40,000 cps. In particular, cosmetic compositions of high viscosity are limited in flowability when passed alone through pore channels having a diameter of about 100 to 500 μm. For example, a high viscosity cosmetic composition has a low filling speed for a sponge block, and the amount of cosmetic composition that is not squeezed increases during use. However, the through-hole passages 130 supplement the hole passages, thereby improving the filling speed and the discharging performance of the cosmetic composition.

Fig. 3 is a schematic view showing a sponge block according to another embodiment of the present invention.

Referring to fig. 3, as shown in fig. 2, a through-hole passage 130 is formed in the body 110 of the sponge block. The through-hole passage 130 penetrates the sponge block from the top surface to the bottom surface thereof.

As shown, the through-hole passage 130 is relative to the central axis (A) of the sponge block_c) Is inclined at a predetermined angle. For example, when the through-hole passage 130 is a linear passage, the axis (a) in the longitudinal direction of the through-hole passage_h) A central axis (A) perpendicular to the top surface or the bottom surface of the sponge block with respect to the sponge block_c) Forming a predetermined angle. Further, the length (l) of the through-hole passage 130 is greater than the thickness (t) of the sponge block, and the length (l) thereof can be determined by the following equation.

(formula 1) l ═ t/cos θ (where θ is A)_hAnd A_cAngle therebetween)

In the present invention, the inclined through-hole passage may provide the following advantages. First, the length of the through-hole channel may be increased in through-holes having the same diameter (width). That is, the inclined through-hole passages can increase the volume of the through-hole passages in the sponge block without changing the density of the through-hole passages per unit area.

Next, when pressure is applied using a finger, a puff, or the like, the inclined through-hole passage generates a force in the horizontal direction. This mechanism is illustrated in fig. 4. As shown in fig. 4(a), for a vertical through-hole channel, a vertically downward applied force (F) is activated vertically downward along the walls of the channel 130. In contrast, as shown in fig. 4(b), for an inclined through-hole channel, the vertically downward applied force (F) can be divided into longitudinal components (F) that activate along the walls of the hole channel _l) And a horizontal direction component (F) activated in the width direction (diameter direction) of the pore channel_t). That is, with the inclined through-hole channels, when pressure is applied using a finger or the like, the channels are deformed by a horizontal direction component in the width direction, and this locally reduces the width of the channels, thereby activating the cosmetic ingredients in the channels as an extrusion force. Therefore, the cosmetic composition can be discharged more smoothly.

Although fig. 4 explained above shows that all the through-hole passages 130 have a constant inclination, the present invention is not limited thereto. For example, the through-hole channel may be configured with an inclined through-hole channel for only a part of the through-hole channel and a vertical through-hole channel for the remaining part. Furthermore, the through-hole channels may be designed such that the through-hole channels have different inclination angles. In addition, a plurality of via channels may cross each other to be interconnected.

In the present invention, the inclination angle of the through-hole passage can be designed appropriately. For example, the inclination angle (θ) may be in the range of 1 to 30 °. Assuming that the through-hole via is a linear through-hole via, the volume of the through-hole via may be increased by about 0.1 to 13% compared to a vertical through-hole via. In addition, a horizontal direction component (F) generated corresponding thereto _tF tan θ) is about 2% to 42% of the force applied vertically downward.

In the present invention, preferably, the inclination angle of the through-hole passage is 1 ° to 30 °, and more preferably, the inclination angle may be 5 ° or more or 10 ° or more. Further, the tilt angle may be less than 15 °.

Modes for carrying out the invention

Examples

Vertical through-hole channels of 0.7mm in diameter were formed in polyurethane foam of 10.0mm in thickness and 48.0mm in diameter. The through-hole channels are formed by stamping. The channels are arranged in various ways. Fig. 5(a) to (c) are photographs of the thus-produced sponge blocks having various patterns of through-hole passages.

< Experimental example 1>

Polyurethane foam having a thickness of 10.0mm and a diameter of 48.0mm was impregnated with a base cosmetic and sunscreen cosmetic composition, and appearance preference and feeling of use preference were evaluated. In particular, after each cosmetic product was provided to a total of ten women (five women in twenty and five women in thirty), the women were asked to evaluate appearance preference and feeling of use preference according to color and to give points. The score average was calculated and the results are shown in table 2. As the sponge block, polyurethane foam without through-hole channels, a sponge block formed with 10 vertical through-hole channels, and a sponge block formed with 50 vertical through-hole channels were used. The evaluation criteria are as follows.

< evaluation criteria >

1: difference (D)

2: a little bit different

3: medium and high grade

4: passing and lattice

5: good effect

[ Table 1]

	Number of via holes	Appearance preference	Feeling of preference in use
				Comparative examples	0	4.0	4.0
Sample #1	10	3.8	3.6
				Sample #2	50	4.1	4.2

From table 1 above, it can be confirmed that sample #2 using the sponge block formed with 50 through-hole channels has a higher preference in appearance than sample #1 formed with 10 through-hole channels. The reason for this preference is that the through-hole sponge has an inherent elasticity, good coverage and a cool feeling.

< Experimental example 2>

Through-hole passages having a diameter of 0.7mm were arranged in a grid pattern in a polyurethane foam having a thickness of 10.0mm and a diameter of 48.0mm, filled with 15.5g of the content, and impregnation performance was evaluated.

[ Table 2]

(O: impregnable; X: non-impregnable; Delta: impregnable under certain conditions)

For sample #3, which is the same type as a common sponge, it is impregnable for a content with a viscosity of 13,500 cps; but it cannot be impregnated conventionally for a cosmetic composition having a viscosity of 20,000cps or more.

Next, for samples #4-6, the contents having a viscosity of 13,500cps were impregnable, but a small amount of the contents flowed down, so that the samples were not suitable. It was confirmed that contents having a viscosity of 15,000 to 40,000cps can be suitably used for impregnation.

For sample #7, the contents having a viscosity of 13,500cps were impregnable, but their through-hole passage was too much, so the contents flowed down without being used for sufficient impregnation. Meanwhile, for the contents having a viscosity of 20,000 to 40,000cps, there is a problem in that too much contents remain in the through-hole, thereby decreasing marketability thereof.

As can be seen from table 2, the sample provided with 10 to 50 through-hole channels can be impregnated with the contents having a viscosity of 15,000 to 40,000cps, and thus it can be understood that the impregnation of new contents is achieved by overcoming the limitations of the existing sponge.

< Experimental example 3>

After 30 to 50 through-hole passages were arranged in a mesh pattern in a polyurethane foam having a thickness of 10.0mm and a diameter of 48.0mm and filled with 15g of a cosmetic composition having a viscosity of 26,500cps, the discharge amount at the time of applying one pressure with a puff was evaluated. Sample #8 had 30 through-hole channels, sample #9 had 40 through-hole channels, and sample #10 had 50 through-hole channels.

[ Table 3]

For sample #8, the discharge amount was appropriate after filling according to the diameter of the channel. For samples #9 and #10, as the diameter of the passage becomes larger, the discharge amount when the consumer uses the puff is relatively increased, and therefore the samples are not suitable. Therefore, it can be known that the sample shows an optimum discharge amount when the diameter is about 0.15cm, and preferably, the diameter of the through-hole passage is 2.0mm or less.

< Experimental example 4>

50 through-hole channels having a diameter of 0.7mm were arranged in a grid pattern in polyurethane foam having a thickness of 10.0mm and a diameter of 48.0 mm.

After impregnating the prepared polyurethane foam with the cosmetic compositions having the viscosities shown in table 4, the impregnation amount, the residual amount, the puff absorption amount, the recovery property and the discharge amount were measured, and the results are shown in table 4.

-amount of impregnation: amount of contents actually filled in the container

-residual amount: the amount of powder puff left in the container and sponge after direct use

The puff uptake used: amount of content absorbed by puff

Recovery (%) { impregnation amount- (residual amount + puff absorption amount) }/impregnation amount × 100

-a discharge amount: after the sponge filled with the cosmetic composition was squeezed with the gloved hand, the amount of the content remained

[ Table 4]

< Experimental example 5>

25 through-hole channels having a diameter of 0.7mm were arranged in a grid pattern in polyurethane foam having a thickness of 10.0mm and a diameter of 48.0 mm.

After impregnating the prepared polyurethane foam with the cosmetic compositions having the viscosities shown in table 4, the impregnation amount, the residual amount, the puff absorption amount, the recovery property and the discharge amount were measured, and the results are shown in table 5.

[ Table 5]

Referring to tables 4 and 5, with respect to the density of the through-hole passages, the case of 25 through-hole passages showed a slight difference in recovery or a reduction in discharge amount as compared with the case of 50 through-hole passages. This indicates that the increase in the number of passages increases the discharge amount of the contents in the passages due to the function of the through-hole passages. However, the difference is small and the optimum range cannot be clearly determined. It is estimated that a suitable number of through-hole passages is 25 to 50.

Industrial applicability

The invention is suitable for cosmetic products.

Claims

1. A sponge block for impregnation with a liquid-phase cosmetic composition, which has a reticulated cell structure and foam cell channels, comprises a plurality of through-hole channels that vertically penetrate the sponge block.

2. The sponge block for impregnation with a liquid-phase cosmetic composition according to claim 1, wherein the sponge block has a number of pores of 70 to 120 ppi.

3. The sponge block for impregnation with a liquid-phase cosmetic composition according to claim 1, wherein the sponge block has a density of 1.0 to 3.0 pcf.

4. The sponge block for impregnation of a liquid-phase cosmetic composition according to claim 1, wherein the diameter of the through-hole passage is 0.7 to 2 mm.

5. The sponge block for impregnating a liquid-phase cosmetic composition according to claim 1, wherein the sponge block has a density of through-hole passages per unit area of 0.5 to 3.3 units/cm²。

6. The sponge block for impregnation with a liquid-phase cosmetic composition according to claim 1, wherein at least a part of the plurality of through-hole passages of the sponge block has a length larger than the thickness of the sponge block.

7. The sponge block for impregnation of a liquid-phase cosmetic composition according to claim 6, wherein at least a part of the plurality of through-hole passages of the sponge block has a length at least 1% to 13% greater than the thickness of the sponge block.

8. The sponge block for impregnation of a liquid-phase cosmetic composition according to claim 1, wherein a central axis of at least a part of the plurality of through-hole passages of the sponge block is inclined with respect to a central axis of the sponge block.

9. The sponge block for impregnation with a liquid-phase cosmetic composition according to claim 8, wherein the central axis of at least a part of the through-hole passage of the sponge block has an inclination angle of 1 to 30 ° with respect to the central axis of the sponge block.

10. The sponge block for impregnation with a liquid-phase cosmetic composition according to claim 1, wherein the sponge block is foamed polyurethane.

11. The sponge block for impregnation with a liquid-phase cosmetic composition according to claim 1, wherein the sponge block is a foamed rubber.

12. A cosmetic product, comprising:

a cosmetic composition container body; and

a sponge block of a reticulated cellular structure impregnated with a liquid-phase cosmetic composition and having foamed porous passages mounted on the container body,

wherein the cosmetic product is provided with a plurality of through-hole passages vertically penetrating the sponge block, and

the viscosity of the liquid phase cosmetic composition is 15,000-40,000 cps.

13. The cosmetic product of claim 12 wherein the sponge block has a pore number of from 70 to 120 ppi.

14. The cosmetic product of claim 12, wherein the diameter of the through-hole passage is 0.7 to 2 mm.

15. The cosmetic product of claim 12 wherein the sponge block has a density of through-hole passages per unit area of 0.5 to 3.3 units/cm²。

16. The cosmetic product of claim 12 wherein at least a portion of the plurality of through-hole passages of the sponge block have a length greater than the thickness of the sponge block.

17. The cosmetic product of claim 6 wherein at least a portion of the through-hole passage of the sponge block has a length at least 5% to 30% greater than the thickness of the sponge block.

18. The cosmetic product of claim 12 wherein the central axis of at least a portion of the plurality of through-hole passages of the sponge block is inclined relative to the central axis of the sponge block.

19. The cosmetic product according to claim 12, wherein a central axis of at least a part of the through-hole passage of the sponge block has an inclination angle of 1 to 30 ° with respect to a central axis of the sponge block.

20. The cosmetic product of claim 12 wherein the sponge block is a foamed polyurethane.

21. The cosmetic product of claim 12 wherein the sponge block is a foam rubber.