KR20200103999A - Sponge For Impregnating Cosmetic Composition With Through-holes - Google Patents

Abstract

An object of the present invention is to provide a sponge block for supporting liquid cosmetic materials which provides good fluidity when loading and discharging cosmetic materials. The present invention, in the sponge block having a netlike-shaped cell structure having a foam pore channel, provides the sponge block for supporting liquid cosmetic materials having a plurality of through-hole channels penetrating the sponge block up and down.

Description

Sponge For Impregnating Cosmetic Composition With Through-holes {Sponge For Impregnating Cosmetic Composition With Through-holes}

The present invention relates to a liquid cosmetic composition impregnating material, and more particularly, to a porous impregnated sponge having a through hole.

Conventional cosmetics are limited in application of the contents according to container restrictions. In particular, in the case of liquid cosmetics, there is a limitation in configuring the feeling of use in selecting the viscosity according to the container type.

For example, in the case of a cushion foundation, since the role of the carrier is very important, a cosmetic composition within a range having an appropriate flowability is selected. In such a cushion foundation, the viscosity of a cosmetic that can be deposited or has flowability that can be easily discharged is very limited as approximately 5,000 to 15,000 cps.

For this reason, there have been steadily attempts to change the composition of the container or the impregnating material in order to change the feeling of use of the product.

Therefore, there is a need for further research on a container that can realize the feeling of use according to the taste of the consumer.

(1) KR 10-1060826 B

In order to solve the problems of the prior art, an object of the present invention is to provide a sponge block for carrying liquid cosmetics that provides good fluidity during loading and discharging of cosmetics.

In addition, an object of the present invention is to provide a cosmetic product having the above-described sponge block.

In order to achieve the above technical problem, the present invention, A sponge block having a network-like cell structure having a foam pore channel, comprising: a plurality of through-hole channels penetrating the sponge block vertically.It provides a sponge block for carrying a liquid cosmetic material.

In the present invention, the number of pores of the sponge block is preferably 70 to 120 ppi. In addition, the sponge block preferably has a density of 1.0 to 3.0 pcf.

In addition, in the present invention, the through-hole channel preferably has a diameter of 0.7-2 mm, and the density of the through-hole channels per unit area of the sponge block is preferably 0.5-3.3/cm ² .

In the present invention, at least some of the plurality of through-hole channels may have a length greater than the thickness of the sponge block. In this case, the length of the through-hole channel is preferably 1 to 13% or more larger than the thickness of the sponge block.

In addition, in the present invention, the central axis of at least some of the plurality of through-hole channels may be formed to be inclined with respect to the central axis of the sponge block. In this case, it is preferable that the inclination angle of the central axis of the at least part of the through-hole channel with respect to the central axis of the sponge block is 1 to 30°.

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

In addition, the present invention is a cosmetic container body; And a sponge block impregnated with a liquid cosmetic and having a foamed pore channel mounted in the container body, and having a plurality of through-hole channels penetrating the sponge block vertically, , The liquid cosmetic provides a cosmetic, characterized in that the viscosity is 15,000 ~ 40,000 cps.

According to the present invention, it is possible to provide a sponge block for supporting liquid cosmetics that provides good fluidity during loading and discharging of cosmetics.

1 is a diagram schematically showing a cosmetic product according to an embodiment of the present invention.
Figure 2 (a) is a perspective view schematically showing the appearance of a sponge block according to an embodiment of the present invention, (b) is a diagram schematically showing a cross-sectional structure of the sponge block.
3 is a diagram schematically showing a sponge block according to another embodiment of the present invention.
4 is a view for explaining the force acting on the through-hole channel when the sponge block is pressed.
5A to 5C are photographs of a sponge block having various patterns of through-hole channels manufactured according to the practice of the present invention.

Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the drawings.

1 is a diagram schematically showing a cosmetic product according to an embodiment of the present invention.

As shown, the cosmetic 10 includes a container body 11 for accommodating a liquid cosmetic. A sponge block 100 for impregnating liquid cosmetics is accommodated in the container body 11. In the drawings, as an example of the sponge block, a cylindrical block having a flat upper surface and a lower surface and having a predetermined thickness is illustrated, but the present invention is not limited thereto. Further, in the present invention, the thickness of the sponge block may be 5 to 30 mm, and the volume may be 20 to 50 cm ³ , but is not limited thereto.

In the present invention, the cosmetic may include an inner lid 13 and/or an outer lid 15 for preventing leakage of liquid cosmetics from the sponge block 100. In addition, although not shown, in order to prevent separation of the sponge block, a fixture for fixing the multi-layered foam impregnating material may be further provided. This will be described separately later.

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

When the cosmetic composition is an emulsified cosmetic composition, the viscosity of the cosmetic composition may be 5,000 to 40,000 cps. If the viscosity of the cosmetic composition is less than 5000 cps, separation of the oil phase and the aqueous phase occurs immediately after preparation of the emulsion, making it difficult to impregnate the sponge block with a uniform composition. Preferably, the present invention provides a sponge block suitable for supporting a cosmetic composition having a viscosity of 15000 to 40,000 cps. This will be described later.

Meanwhile, in the present invention, an airtight container may be used as the container body. An airtight container is a container that has sealing power, and prevents the inflow of air from the outside and prevents loss due to evaporation of volatile substances into the container. It refers to a container with improved sealing power to prevent hardening. In the case of cosmetics such as moisture compacts, moisturizing creams, and shadows, there was a problem that the cosmetics could not be used for a long time due to the inflow of external air or the evaporation of internal moisture and volatile components. As the inflow of external air into the interior or the evaporation of internal moisture and volatile components are prevented, it is possible to use cosmetics while maintaining the quality for a long time without deteriorating.

Figure 2 (a) is a perspective view schematically showing the appearance of a sponge block according to an embodiment of the present invention, (b) is a diagram schematically showing a cross-sectional structure of the sponge block.

Referring to FIG. 2, the sponge block 100 is preferably a sponge having a cell having a three-dimensional network structure. A sponge having a three-dimensional network structure uses pores defined by cells (supports or filaments) having a three-dimensional network structure as a space for receiving cosmetics. The pores in the cell structure are interconnected to form pore channels. At this time, it is preferable that the average diameter of the pores forming the pore channel is about 100 to 600 μm, preferably 150 to 500 μm. Such microporous channels act as capillaries for the received cosmetic composition, and allow the cosmetic composition to be uniformly distributed in the pore channels.

Exemplarily, polyurethane foam may be used as the sponge having a three-dimensional network structure in the present invention. As the polyurethane foam, an ether polyurethane foam, an ester polyurethane foam, or an ether/ester mixed polyurethane foam, an ether/ester hybrid polyurethane foam may be used. These polyurethane foams are manufactured by processing a polyurechan formed by reacting a polyether polyol, a polyester polyol, or a mixture thereof with a compound having an isocyanate group as a foamed foam, or a hybrid copolymer of a polyether polyol and a polyester polyol and an isocyanate It can be produced by processing a polyurethane formed by reacting with a compound having a (-NCO) group as a foam foam.

As another example, a rubber foam may be used as the sponge having the three-dimensional network structure. As the rubber foam, BR (Butadiene Rubber), SBR (Styrene Butadiene Rubber), NR (Nateral Rubber), NBR (acrylonitrile butadiene rubber), nitrile rubber, butyl rubber, and the like may be used.

In the present invention, the size of the cell of the three-dimensional network structure may be expressed by the number of pores. When the sponge block is a foamed urethane foam, the number of pores of the foamed urethane foam is 70 to 120 ppi, 70 to 115 ppi, 70 to 110 ppi, 70 to 105 ppi, 70 to 100 ppi, 70 to 95 ppi, 75 to 120 ppi, 75 to 115 ppi, 75 to 110 ppi, 75 to 105 ppi, 75 to 100 ppi, for example, may be 75 to 95 ppi. If the number of pores is less than 70 ppi, the elasticity of the foam decreases, making it difficult to control the fluidity of the cosmetic composition, and if the number of pores exceeds 120 ppi, durability may decrease during use and the usability of the contents decreases. The number of pores is defined as the number of pores present in a 1-inch long sample of the foam. Specifically, the number of pores may be measured according to standards such as JIS K6400-1.

In the present invention, the density of the foamed urethane foam is 1.0 to 3.0 pcf (pounds per cubic feet), 1.0 to 2.9 pcf, 1.0 to 2.8 pcf, 1.0 to 2.7 pcf, 1.0 to 2.6 pcf, 1.0 to 2.5 pcf, 1.0 to 2.4 pcf , 1.0 to 2.3 pcf, 1.0 to 2.2 pcf, 1.0 to 2.1 pcf, for example, may be 1.0 to 2.0 pcf. If the density of the sponge block is less than 1.0, there is a problem that the cosmetic composition is too much smeared and thus poor usability, and if the density exceeds 3.0, there is a problem that it is difficult to effectively impregnate the content due to insufficient pores that can be impregnated.

In addition, in the present invention, when the sponge block is a foamed urethane foam, the hardness may be 10 to 70. If the hardness is less than 10, the emulsified cosmetic composition supported on the foamed urethane foam comes out excessively when cosmetic tools used in the pact type or when making up by hand, and if the hardness exceeds 70, the cosmetic composition is too hard to come out easily. to be.

As shown in FIG. 2, the sponge block 100 includes a plurality of through-hole channels 130. The through channel 130 penetrates the entire thickness of the sponge block body 110 from the upper surface to the lower surface. In the present invention, the through-hole channel 130 may have a shape such as a circle or a square in cross section. In the present invention, it is preferable that the through-hole channel 130 of the sponge block 100 has a width (or diameter) of 0.7 to 2 mm. More preferably, the through-hole channel is preferably 1 to 2 mm wide. In addition, in the present invention, the plurality of through-hole channels 130 may be disposed at a predetermined interval (d). Preferably, the channel spacing may be 3 to 10 mm.

In addition, the density of the through-hole channel is preferably 0.5 to 3.3 per unit area of the sponge block / cm ² . If the density of the through-hole channel is less than 0.5 pieces/cm ² , it is difficult to differentiate from the existing carrier, and when the through-hole density exceeds 3.3 pieces/cm ² , the composition is too much stained and the value of the product decreases. Since the evaporation of volatile contents is easy, there is a possibility of deterioration of the contents.

In the present invention, the through-hole channel may be formed in various ways. For example, a method such as perforation or laser perforation may be used.

In the present invention, the through channel can improve the flow characteristics of the high viscosity cosmetic composition of 15,000 to 40,000 cps. Specifically, the high-viscosity cosmetic has a limitation only by flowing through pore channels having a diameter of approximately 100 to 500 μm. For example, a high-viscosity cosmetic has a low filling rate with respect to the sponge block, and does not squeeze when used, and the remaining cosmetic material increases. However, the through channel 130 may improve the filling speed by supplementing the pore channel and improve the discharge performance of cosmetics.

3 is a diagram schematically showing a sponge block according to another embodiment of the present invention.

Referring to FIG. 3, as in FIG. 2, a through-hole channel 130 is formed in the body 110 of the sponge block. The through-hole channel 130 penetrates the sponge block from the upper surface to the lower surface of the sponge block.

As shown, the through-hole channel 130 is inclined at a predetermined angle with respect to the central axis (A _c ) of the sponge block. For example, when the through-hole channel 130 is a linear channel, the axis A _{h in} the longitudinal direction of the through-hole channel forms a predetermined angle with respect to the sponge block central axis A _c perpendicular to the upper or lower surface of the sponge block. In addition, the length ( l ) of the through-hole channel 130 has a larger value than the thickness ( t ) of the sponge block, and the length ( l ) may be determined according to the following equation.

(Equation 1)

l = t /cosθ (where θ is the angle formed by A _h and A _c )

In the present invention, the inclined through-hole channel can provide the following advantages. First, it is possible to increase the through-hole channel length at the same through-hole diameter (width). That is, the inclined through-hole channel can increase the volume of the through-hole channel in the sponge block without changing the density of the through-hole channel per unit area.

Next, when pressed by a finger or puff, the inclined through-hole channel generates a force component in the horizontal direction. This mechanism is shown in Figure 4. As shown in (a) of FIG. 4, in the case of the vertical through-hole channel, the force F applied vertically downward acts vertically downward along the wall of the channel 130. On the other hand, as shown in (b) of FIG. 4, in the case of the inclined through-hole channel, the force (F) acting vertically downward is the longitudinal component (F _l ) acting along the pore channel wall and the width direction of the pore channel ( It can be decomposed into a horizontal component (F t ) acting as a radial direction). In other words, in the case of the inclined through-hole channel, the width direction of the channel is deformed by the horizontal component when pressed by a finger, etc., which locally reduces the channel width and acts as a force to squeeze the cosmetic component in the channel. Therefore, it can be discharged more smoothly.

4 illustrates that all through-hole channels 130 have a constant slope, but the present invention is not limited thereto. For example, it is possible to configure only a part of the through-hole channel as an inclined through-hole channel and the rest as a vertical through-hole channel. It is also possible to design the through-hole channels to have different inclination angles. In addition, a plurality of through-hole channels may be interconnected by crossing each other.

)은 1~30° 범위의 값을 가질 수 있다. 통공 채널이 선형 통공 채널이라고 가정하면, 수직 통공 채널에 비해 경사 통공 채널의 부피는 대략 0.1~13 % 증가할 수 있고, 이에 대응하여 발생하는 수평 방향 분력(F _{t =} F tan

)은 수직 하방으로 가해진 힘의 대략 2~42%이다. In the present invention, the inclination angle of the through-hole channel can be appropriately designed. For example, the inclination angle (

) May have a value in the range of 1 to 30°. Assuming that the through-hole channel is a linear through-hole channel, the volume of the inclined through-hole channel can increase by approximately 0.1 to 13% compared to the vertical through-hole channel, and the corresponding horizontal component force (F _{t =} F tan

) Is approximately 2-42% of the force applied vertically downward.

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

<Example>

A vertical through-hole channel having a diameter of 0.7 mm was formed in a polyurethane foam having a thickness of 10.0 mm and a diameter of 48.0 mm. The through-hole channel was formed by a press punching method. The arrangement of the through-hole channels was varied. 5A to 5C are photographs of a sponge block having through-hole channels of various patterns manufactured as described above.

<Experimental Example 1>

A base makeup and sunscreen cosmetic composition was immersed in a polyurethane foam having a thickness of 10.0 mm and a diameter of 48.0 mm, and an experiment was conducted to evaluate the preference for appearance and preference for use. Specifically, after providing each cosmetic product to a total of 10 people, 5 women in their 20s and 5 women in their 30s, the appearance preference and feeling preference according to the color were evaluated and scored, and the scores were averaged. Table 2 shows the results. As the sponge block, a polyurethane foam without a through channel, a sponge block with 10 vertical through channels, and a sponge block with 50 vertical through channels were used. The evaluation criteria are as follows.

<Evaluation criteria>

1: very bad

2: bad

3: normal

4: good

5: very good

division Number of through-hole channels Appearance preference Feeling Preference Comparative example 0 units 4.0 4.0 Sample #1 10 things 3.8 3.6 Sample #2 50 pieces 4.1 4.2

As can be seen in Table 1, the appearance preference of Sample #2 using a sponge block having 50 through-channels was higher than that of Sample #1 having 10 through-hole channels. As for the preference, the perforated sponge is considered to be an advantage in terms of elasticity of the contents, high coverage, and a refreshing feel.

<Experimental Example 2>

In a polyurethane foam having a thickness of 10.0 mm and a diameter of 48.0 mm, a through-hole channel having a diameter of 0.7 mm was placed in a grid shape and filled with 15.5 g to evaluate the deposition characteristics.

division Number of through-hole channels Content viscosity 15,000 or less
(13,500 cps) 20,000~30,000
(26,500 cps) 40,000 or more
(40,050 cps) Sample #3 0 units Content deposition (O) Content deposition (X) Content deposition (X) Sample #4 10 things Content deposition (△) Content deposition (O) Content deposition (O) Sample #5 25 pieces Content deposition (△) Content deposition (O) Content deposition (O) Sample #6 50 pieces Content deposition (△) Content deposition (O) Content deposition (O) Sample #7 70 pcs Content deposition (X) Content deposition (△) Content deposition (△)

(O: deposition possible, X: deposition not possible, △: conditional deposition possible)

In the case of sample #3, it was the same type as the general sponge type, and it was possible to deposit at 13,500 cps, but the cosmetic material over 20,000 cps was not deposited normally.

Next, in the case of samples #4 to 6, deposition was possible at 13,500 cps, but it was not appropriate because a small amount of the contents flowed down. Therefore, it was confirmed that the contents were properly deposited at 15,000~40,000 cps.

In the case of sample #7, deposition was possible at 13,500 cps, but the contents were not sufficiently loaded and flowed down due to the large number of through-hole channels. On the other hand, at a viscosity of 20,000 to 40,000 cps, there is a problem that too much content is taken through the through hole, and therefore, it has a disadvantage of poor marketability.

As can be seen in Table 2, since the sample provided with 10 to 50 through-hole channels can be deposited at a viscosity of 15,000 to 40,000 cps, it can be seen that new contents can be supported by overcoming the limitations of the existing sponge.

<Experimental Example 3>

After 30-50 through-hole channels were arranged in a grid form on a polyurethane foam having a thickness of 10.0 mm and a diameter of 48.0 mm, 15 g of cosmetic material of 26,500 cps was filled, and the discharge amount at the time of pressing once 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.

division Through-channel diameter
(mm) Filling amount Filling viscosity
20,000~30,000
(26,500cps) Sample #8 1.5 15.0g Discharge (O) Sample #9 2.0 15.0g Discharge (△) Sample #10 3.0 15.0g Discharge (X)

In the case of sample #8, the discharge amount after filling was appropriate according to the channel diameter, and in the case of samples #9 and 10, the discharge amount when the consumer took the puff was relatively large as the channel diameter became wider. Therefore, it can be seen that the optimum discharge amount is displayed around 0.15 cm, and it can be seen that the through-hole channel diameter is preferably 2.0 mm or less.

<Experimental Example 4>

In a polyurethane foam with a thickness of 10.0 mm and a diameter of 48.0 mm, 50 through-hole channels with a diameter of 0.7 mm were arranged in a grid form.

After immersing the cosmetic composition having the viscosity of Table 4 on the prepared polyurethane foam, the amount of impregnation, the amount remaining, the amount of puff absorption, the actual use rate, and the amount of discharge were measured as follows, and the measurement results are shown in Table 4.

- Impregnation amount: The amount of the contents filled in the container

- Remaining amount: The amount remaining in the container and sponge after using as a puff directly

- Absorption amount of puff used: Amount of puff absorbing the contents

- Actual Usage Rate (%) = {Impregnated Amount -(Remaining Amount + Puff Absorbed Amount)}/Impregnated Amount x 100

- Emissions: The remaining amount after squeezing the sponge filled with cosmetics with a hand wearing gloves

division Viscosity 17,150 cps 22,500 cps 28,850 cps 34,350 cps Impregnation amount
(Container seal filling amount) 21.55g 21.50g 20.88 g 19.00g Leftover
(residue) 2.34g 2.65g 2.70g 2.50g Puff absorption amount used 2.10 g 2.05 g 2.30 g 2.34 g Actual usage (restitution) 79.4% 78.1% 76.0% 74.5% Discharge (squeezed by hand) 12.99g
(60.02%) 12.91g
(60.0%) 12.70g
(60.8%) 12.5g
(65.0%)

<Experimental Example 5>

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

After immersing the cosmetic composition having the viscosity of Table 4 on the prepared polyurethane foam, the amount of impregnation, the amount remaining, the amount of puff absorption, the actual use rate, and the amount of discharge were measured in the same manner, and the measurement results are shown in Table 5.

division Viscosity 17,150 cps 22,500 cps 28,850 cps 34,350 cps Impregnation amount
(Container seal filling amount) 22.00g 21.75g 21.03g 20.09g Leftover
(residue) 2.40g 3.00g 2.97g 2.30g Puff absorption amount used 2.09g 2.55g 2.45g 2.35g Actual usage (restitution) 79.59% 74.48% 74.22% 76.85% Emissions (squeezed by hand) 12.50g
(56.8%) 11.90g
(43.27%) 12.30g
(58.48%) 12.21g
(60.77%)

Referring to Tables 4 and 5, it was shown that in the case of the density of the through-hole channel, the actual usage rate showed a slight difference or decreased in the case of the emission rate compared to the case of 50 cases in 25 cases. It can be seen that the higher the number of channels due to the role of the through-hole channel increases the discharge of contents in the tunnel. However, since there is a slight difference, the optimum range cannot be clearly distinguished, and the number of appropriate through-hole channels is estimated to be between 25 and 50.

Claims (21)

In the sponge block having a network-like cell structure having a foam pore channel,
A sponge block for carrying a liquid cosmetic comprising a plurality of through-hole channels penetrating the sponge block vertically. The method of claim 1,
A sponge block for supporting liquid cosmetics, characterized in that the number of pores of the sponge block is 70 to 120 ppi. The method of claim 1,
The sponge block is a sponge block for supporting liquid cosmetics, characterized in that the density is 1.0 to 3.0 pcf. The method of claim 1,
The through channel is a sponge block for supporting liquid cosmetic, characterized in that the diameter is 0.7 ~ 2 mm. The method of claim 1,
A sponge block for supporting liquid cosmetic, characterized in that the density of the through-hole channels per unit area of the sponge block is 0.5 to 3.3 units/cm ² . The method of claim 1,
At least some of the plurality of through-hole channels have a length greater than the thickness of the sponge block. The method of claim 6,
The at least some of the through-hole channels have a length of 1 to 13% or more than a thickness of the sponge block. The method of claim 1,
A sponge block for supporting liquid cosmetic, characterized in that at least a part of the central axis of the plurality of through-hole channels is inclined with respect to the central axis of the sponge block. The method of claim 8,
A sponge block for supporting liquid cosmetic, characterized in that the inclination angle of the at least part of the through-hole channel with respect to the central axis of the sponge block is 1 to 30°. The method of claim 1,
The sponge block is a sponge block for supporting liquid cosmetic, characterized in that the foamed polyurethane. The method of claim 1,
The sponge block is a sponge block for supporting liquid cosmetic, characterized in that the foam rubber. Cosmetic container body; And
Impregnated with a liquid cosmetic, comprising a sponge block having a network-like cell structure having a foamed pore channel mounted on the container body,
And a plurality of through-hole channels penetrating the sponge block vertically,
Cosmetics, characterized in that the viscosity of the liquid cosmetics is 15,000 ~ 40,000 cps. The method of claim 12,
Cosmetics, characterized in that the number of pores of the sponge block is 70 to 120 ppi. The method of claim 12,
Cosmetics, characterized in that the through channel has a diameter of 0.7 to 2 mm. The method of claim 12,
Cosmetics, characterized in that the density of the through-channel per unit area of the sponge block is 0.5 ~ 3.3 / cm ² . The method of claim 12,
Cosmetics, characterized in that at least some of the plurality of through-hole channels have a length greater than a thickness of the sponge block. The method of claim 6,
Cosmetics, characterized in that the length of the at least some of the through-hole channels is 5 to 30% or more larger than the thickness of the sponge block. The method of claim 12,
Cosmetics, characterized in that the central axis of at least a portion of the plurality of through-hole channels is inclined with respect to the central axis of the sponge block. The method of claim 12,
Cosmetics, characterized in that the inclination angle of the central axis of the at least part of the through-hole channel with respect to the central axis of the sponge block is 1 to 30°. The method of claim 12,
The sponge block is a sponge block for supporting liquid cosmetic, characterized in that the foamed polyurethane. The method of claim 12,
The sponge block is a sponge block for supporting liquid cosmetic, characterized in that the foam rubber.

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