KR20060024612A - Sheet type sun block product - Google Patents

Abstract

The present invention relates to a sunscreen product excellent in water resistance and excellent in convenience, and impregnated with a low viscosity W / O sunscreen composition on a sheet and packed to enhance the portability and convenience of the user. It relates to a sunscreen cosmetic impregnated sheet.

In more detail, the sunscreen composition according to the present invention comprises 30-70% by weight of an oily component, 0.01-3% by weight of an emulsifier, 1 to 25% by weight of a sunscreen selected from organic sunscreens and inorganic sunscreens having a sunscreen effect, and water phase A low viscosity W / O emulsified composition containing the component, and a sheet impregnated with the sunscreen composition is applied to nonwoven fabric or tissues and sponges made of pulp having excellent durability.

UV protection cosmetic, W / O emulsification, cosmetic impregnation sheet, SPF, water resistance

Description

UV protection cosmetic impregnation sheet {Sheet type sun block product}

The present invention relates to a sunscreen product which can efficiently apply an active ingredient to the skin by impregnating a low viscosity water-in-oil (W / O emulsion) sunscreen cosmetic on a sheet, and is easy to use and carry.

Ultraviolet rays irradiated from sunlight are a major cause of erythema, edema, freckles, and skin cancer. Recently, many studies have been conducted on various skin diseases caused by ultraviolet rays.

In general, ultraviolet rays are classified into UV-C at 240-280 nm, UV-B at 280-320 nm, and UV-A at 320-400 nm. UV-C passes through the ozone layer and disappears without reaching the surface. UV-B penetrates the skin's epidermis, causing erythema, freckles, and edema. UV-A is well known to induce skin aging and skin irritation such as penetrating the dermis of the skin to promote skin cancer, wrinkles and melanin formation. Numerous epidemiological studies have demonstrated a strong relationship between sun exposure and human skin cancer, and in more detail DeSimone, “Sunscreen and Suntan Products”, Handbook of Nonpre-scription Drugs, 7th Ed., Chapter 26, pp 499-511 (American Pharmaceutical Association, Washington, DC; 1982).

As a result of the aforementioned risks associated with sun exposure, the general public's interest in the sun protection product market has increased considerably, and as a result, sun protection products with various types of sun protection index (SPF) are on the market. Types of sunscreen products are generally made of creams or lotions, and can be classified into W / O type and O / W type according to the composition of the inner and outer phases of the emulsion.

Conventionally, the sunscreen products have been widely used in summer, but recently, due to the change in lifestyle due to the increase in the population enjoying leisure life and the increasing awareness of the harmfulness of ultraviolet rays, the demand for the use of four seasons as well as summer Growing. Accordingly, consumer demand for products that enhance usability and convenience is on the rise.

Generally, sunscreen products are manufactured in the form of W / O with the oil in the external phase to enhance the water resistance to sweat or water. In the case of O / W type sunscreen products, the feeling when applied to the skin has a neat advantage over W / O type products, but it has the disadvantage of being easily washed off by sweat or water, and thus is a conventional purpose of UV protection products. The persistence of the blocking effect is significantly lower.

Accordingly, several researchers have conducted a study (Korean Patent No. 3002060, Korean Laid-open Patent No. 2004-0059033) to improve the water resistance of O / W type sunscreen products. However, the underlying problem still exists, so water resistance is lower than that of W / O products. In addition, W / O type UV protection products have the disadvantage of being heavy and sticky compared to O / W type UV protection products, which is not related to the fact that W / O type UV protection products are creams with high viscosity. not. In the case of W / O sunscreen cosmetics, since the ratio of the aqueous phase of the water phase is high in order to lightly adjust the feeling of use, it is manufactured with high viscosity. In addition, the viscosity of the product has a close relationship with the stability of the product, when the viscosity is lowered, the phenomenon that the internal and external phases are separated.

As a study similar to the present invention, Korean Patent No. 0189689 is a tissue product containing a sunscreen composition which is easy to carry and can be easily applied to the skin, and absorbs and maintains the O / W type sunscreen composition to maintain a fresh feeling. Completed the patent. However, in the case of the O / W-type sunscreen products, because it is easily washed off with sweat or water, there is a disadvantage that the persistence of the sunscreen effect, which is the original use of the sunscreen products, is remarkably inferior. On the other hand, in the case of W / O type blocking products, the water resistance is much better than that of O / W products, but the feeling of use is heavy and sticky, and thus it is inconvenient to use in summer when the UV blocking products are mainly used.

Also, W / O type cosmetics are generally known to have lower emulsification stability than O / W type cosmetics. Especially, low viscosity W / O products are separated from water and oil phases during long-term storage in containers during distribution. There is a problem that the stability of the fall.

Therefore, the present inventors impregnated a sheet of W / O type sunscreen composition having excellent water resistance, so as to maintain the stability of the product while maintaining the persistence of the sunscreen effect, which is the original purpose of the sunscreen product, to produce a sheet with low viscosity It not only facilitated the impregnation into the sheet, but also finished the product with a fresh feeling.

An object of the present invention relates to a sunscreen product having excellent water resistance and excellent ease of use, as mentioned above, a sunscreen cosmetic impregnated sheet impregnated with a sheet of a low viscosity W / O sunscreen composition It is to provide, and also to provide a sunscreen cosmetic product that is completed by packaging to enhance the portability and ease of use of the user.

The sunscreen composition filled in the sheet is a W / O type having excellent water resistance so as to maintain the sustaining effect of the blocking effect, and has a low viscosity to provide a fresh feeling while maintaining the stability of the product.

The present invention relates to a sunscreen product excellent in water resistance and excellent in convenience, and impregnated with a low viscosity W / O sunscreen composition on a sheet and packed to enhance the portability and convenience of the user. It relates to a sunscreen cosmetic impregnated sheet.

Hereinafter, the present invention will be described in detail.

The sheet impregnated with the sunscreen composition according to the present invention is suitable for nonwoven fabric or porous pulp tissue and sponge.

In addition, the low-viscosity W / O emulsion composition for sunscreen cosmetics according to the present invention contains an oily component, an emulsifier, a sunscreen and an aqueous phase component, wherein the sunscreen may be used individually or in combination of an organic sunscreen and an inorganic sunscreen.

The low-viscosity W / O emulsifying composition for sunscreen cosmetics is 30-70% by weight of an oil component, 0.01-3% by weight of an emulsifier, 1 to 15% by weight of an organic sunscreen having a sunscreen effect, 1 to 15% by weight of an inorganic sunscreen % Or 1 to 25% by weight of a sunscreen selected from organic sunscreens and inorganic sunscreens, and an aqueous phase component. The higher the content of the sunscreen may increase the sunscreen index, but it is appropriate that the content of the sunscreen does not exceed 25% since there is a risk of skin irritation by the sunscreen itself.

Here, as the oily component, one or more selected from vegetable oils, animal oils, synthetic esters, hydrocarbons, silicone oils, and the like can be used.

The emulsifier is a nonionic surfactant having a low HLB so as to prepare a W / O emulsion, and a dimethicone copolyol-based emulsifier is suitable, and one or more selected from these may be used.

The sunscreen may use one or more selected from organic sunscreens and inorganic sunscreens, and among the sunscreens, the organic sunscreens may be octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone Selected from among octyltriazone, menthyl anthranilate and 3,4-methylbenzylidene camphor, and as inorganic sunscreen, titanium dioxide having an average particle size of 0.01 to 100 nm, zinc oxide having an average particle size of 0.01 to 300 nm, and an average particle size One or more of iron oxides having 1 to 300 nm can be selected and used. In this case, the larger the average particle size of the inorganic sunscreen, the more white turbidity occurs when applied to the skin, the value of the product is less, so the average particle size is less than 300nm.

As the aqueous phase component, at least one selected from purified water, propylene glycol, 1,3-butylene glycol, glycerin, and sorbitol may be used, and in addition to these components, the cosmetic composition according to the present invention may be optionally selected from preservatives, flavors, and other additives. It can mix and use species.

In order to complete the object of the present invention, it was very important to select the viscosity of the W / O emulsified sunscreen cosmetic, and in the present invention, the prescription was adjusted to have a low viscosity of 500 cps or more and 5000 cps or less.

 If the viscosity of the W / O emulsified cosmetic is less than 500 cps, the separation of the oil phase and the water phase occurs immediately after the preparation of the emulsion, and it is difficult to impregnate the sheet with a uniform composition when impregnating the sheet. The value as a product falls.

Hereinafter, the present invention will be described in more detail based on the following Examples and Comparative Examples. However, these Examples and Experimental Examples are only for helping understanding of the present invention, and the scope of the present invention in any sense is not limited to these Examples.

[Examples 1 to 3]

To prepare a sunscreen emulsion consisting of components and contents as described in Table 1 below. The production method of Examples 1 to 3 manufactured by W / O type is as follows.

The oily ingredients and surfactants are mixed in the weight ratios shown in Table 1 and heated to 80 degrees to make uniform. In a separate mixer, the aqueous phase components are mixed in the weight ratios shown in Table 1 and dissolved completely with stirring at 80 ° C. The aqueous phase dissolved by heating to 80 degrees is slowly added to the oil phase and emulsified using a homo mixer. At this time, the sunscreen was added to the oil phase component and dissolved and emulsified. After cooling to 50 degrees, a second emulsifier was added by adding fragrance and skin protection ingredients, and then cooled to 28 degrees to obtain a low viscosity W / O UV blocking emulsion.

[Comparative Examples 1 to 3]

To prepare a sunscreen emulsion consisting of components and contents as described in Table 1 below. The production method of Comparative Examples 1 to 3 manufactured by O / W type is as follows.

The oily ingredients and the sunscreen are mixed in the weight ratios shown in Table 1 and heated to 80 degrees to make it uniform. In a separate mixer, the aqueous phase component and the surfactant are mixed in the weight ratios shown in Table 1, and are completely dissolved by heating and stirring at 80 degrees. The oil phase component and the sunscreen which were dissolved by heating were added to the water phase and emulsified using a homo mixer. At this time, in order to improve the water resistance of the O / W-type emulsion was prepared by the addition of the oil-soluble polymer, PIV / Eicosane copolymer. After cooling to 50 ° C, the fragrance and skin protection part were added to the third emulsification, and then cooled to 28 ° C to obtain O / W UV blocking emulsions of Comparative Examples 1 to 3.

At this time, the formulation of the O / W sunscreen cosmetics of Comparative Examples 1 to 3 had a viscosity similar to that of the W / O sunscreen cosmetics of Examples 1 to 3 prepared above.                     

division Raw material name Content (parts by weight) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Awards Purified Water Propylene Glycol Butylene Glycol Xanthan Gum MgSO ₄ To 100 5.0 4.0-0.5 To 100 5.0 4.0-0.5 To 100 5.0 4.0-0.5 To 100 5.0 4.0 0.30- To 100 5.0 4.0 0.20- To 100 5.0 4.0 0.10- Paid Cetyl Octanoate Cyclomethicone Liquid Paraffin Glyceryl Stearate FV / Eicosane Copolymer 5.0 20.0 5.0-                                                  - 5.0 25.0 10.0-                                                  - 10.0 35.0 5.0-                                                  - 5.0 5.0 3.0 1.0                                                  - 5.0 5.0 3.0 1.0                                                  2.0 5.0 5.0 3.0 1.0                                                  4.0 Surfactants Dimethicone Copolyol Polysorbate-60 1.0- 0.5- 0.1- -2.0 -2.0 -2.0 Sunscreen Sunscreen 1 Sunscreen 2 Sunscreen 3 Sunscreen 4 Sunscreen 5 7.0 2.0--4.0 5.0-1.0 1.0- 3.0---3.0 7.0 2.0--4.0 7.0 2.0--4.0 7.0 2.0--4.0 additive Incense preservative Proper quantity Proper quantity Proper quantity Proper quantity Proper quantity Proper quantity

Sunscreen 1: Octylmethoxycinnamate

Sunscreen 2: Butylmethoxydibenzoylmethane

Sunscreen 3: octocrylene

Sunscreen 4: Octylsalicylate

Sunscreen 5: Ultrafine Titanium Dioxide

Experimental Example 1

The viscosity of the emulsions of each example and comparative example was measured using a Brookfield viscometer immediately after preparation and the results are shown in Table 2.                     

division Viscosity (cps) Experimental Example 1 1520 Experimental Example 2 2570 Experimental Example 3 3400 Comparative Example 1 1780 Comparative Example 2 2700 Comparative Example 3 3720

Preparation of Sunscreen Composition Impregnated Sheets

5 g of the emulsions of Experimental Examples 1 to 3 and Comparative Examples 1 to 3 prepared as described above were impregnated into a sheet (Viscous rayon 90%, polyethylene tetraphathalate 10%) weighing about 10 cm × 15 cm, and then wrapped in aluminum wrapping paper. Packaged for single use.

Experimental Example 2

In vitro SPF and water resistance evaluation were carried out to determine the sunscreen effect of the composition according to the present invention. In vitro SPF measurement was carried out by pressing a sample of a single-packed sheet product of Experimental Examples 1 to 3 and Comparative Examples 1 to 3, and applying a sample to Vitroskin at a level of 2 mg / cm2, and drying SPF for 15 minutes. In vitro SPF values were measured with a 290 analyzer (Optometrics, USA). The experiment was made as the average value after three measurements and the results are shown in Table 3 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 In vitro SPF 45 30 17 42 25 15

Experimental Example 3

In order to evaluate the water resistance of the composition according to the present invention, the samples of Examples 1 to 3 and Comparative Examples 1 to 3 were taken and applied to Vitroskin, and evaluated according to the degree of reduction of SPF measured after repeated immersion and drying for a certain time. It was. This was in compliance with the US FDA's regulations, and the water was washed by using a device designed to reciprocate by immersing the sample coated Vitroskin in 20 degree water. Immersion time was adjusted every 20 minutes, and the change of SPF was measured after drying the Vitroskin. . At this time, the measuring method of SPF is the same as the above-mentioned method. Water resistance was evaluated based on the time to maintain the initial SPF value of more than 80%

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Water resistance index 120 minutes 120 minutes 120 minutes 20 minutes 40 minutes 80 minutes

The UV blocking effect of Experimental Examples 1 to 3 and Comparative Examples 1 to 3 showed various distributions up to SPF 15-45 depending on the content of the sunscreen. In general, it is known that the formulation of W / O or O / W does not affect the SPF itself. However, in terms of water resistance, W / O type sunscreen emulsions are remarkably superior to O / W type sunscreen emulsions, indicating that the lasting effect of the sunscreen agent is excellent.

Experimental Example 4

In general, the low viscosity W / O type cosmetic composition has a problem in that the stability of the product is lowered due to separation of the aqueous phase and the oil phase during long-term storage in the container during distribution, but when impregnated in a sheet, the problem Found solved. The emulsification stability was tested when the products of Preparation Examples 1 to 3 were impregnated into a sheet and when the product was filled into a plastic container as a general cosmetic container. In order to accelerate and observe the stability change of each sample, the degree of separation of the product was visually observed after 10 days storage at 50 ° C.

division 10 days after 50 ℃ Experimental Example 1 (sheet impregnation) stability Experimental Example 2 (sheet impregnation) stability Experimental Example 3 (sheet impregnation) stability Experimental Example 1 (Plastic Container) detach Experimental Example 2 (Plastic Container) detach Experimental Example 3 (Plastic Container) detach

As can be seen from the results of Table 5, when the sheet (impregnated) it can be seen that the separation phenomenon of the low viscosity W / O type sunscreen cosmetics is improved.

As described above, the sunscreen cosmetic impregnated sheet completed by the present invention is excellent in water resistance and excellent in convenience, and provides a sunscreen cosmetic product that is packaged to enhance the portability and convenience of the user.

Claims (4)

A sunscreen cosmetic impregnated sheet comprising a sheet of porous material impregnated with a low viscosity W / O type cosmetic containing a sunscreen. The sunscreen cosmetic impregnated sheet according to claim 1, wherein the viscosity of the W / O type cosmetic is 500 cps to 5000 cps.  The composition of claim 1, wherein the sunscreen W / O cosmetic composition comprises 1 to 25% by weight of at least one sunscreen selected from 30-70% by weight of an oily component, 0.01-3% by weight of an emulsifier, an organic sunscreen and an inorganic sunscreen. A sunscreen cosmetic impregnated sheet comprising a. The organic sunscreen according to claim 3, wherein the organic sunscreen is octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octyltriazone, menthylanthranilate and 3,4-methylbenzyl Inorganic sunscreens are selected from lithiumdene kempfer, and the inorganic sunscreen agent is selected from titanium dioxide having an average particle size of 0.01 to 100 nm, zinc oxide having an average particle size of 0.01 to 300 nm, and iron oxide having an average particle size of 1 to 300 nm. .