Hydrocolloid sheet having exfoliating function

Abstract

The present disclosure relates to a hydrocolloid sheet having an exfoliating function, comprising: a release layer; a hydrocolloid layer which is stacked on the upper surface of the release layer and contains an adhesive, an absorbent, and an exfoliating agent; and a base layer which is stacked on the upper surface of the hydrocolloid layer and protects the hydrocolloid layer. The hydrocolloid sheet having an exfoliating function, according to the present disclosure, exerts an effect of removing unnecessary dead cells on the skin surface and in pores, simply by being attached to skin.

Description

Hydrocolloid sheet with exfoliating properties

[0001] The present disclosure relates to a hydrocolloid sheet having exfoliating properties.

[0002] Dead skin cells cover our skin, preventing moisture loss and foreign substances from entering. However, excessive accumulation of dead skin cells can cause rough skin texture and dull skin tone. Furthermore, it can interfere with the skin's ability to absorb nutrients.

[0003] If dead skin cells and plugs are left untreated, they can clog pores, leading to various problems such as acne. Dead skin cells and irregular melanin pigmentation scattered throughout the stratum corneum can also cause cosmetic problems. These dead skin cells and plugs are not removed even with cleansing, and even conventional facial cleansers are not sufficient to completely remove the dead skin cells deep within the pores. Furthermore, if the skin lacks a certain level of moisture and becomes dry, it can cause itchiness and, in severe cases, microscopic cracks can form. This can allow harmful bacteria to invade through these cracks, potentially leading to skin diseases. Therefore, managing dead skin cells is crucial.

[0004] Conventional methods for removing dead skin cells or keratin plugs from the skin surface have been proposed, including a method for removing dead skin cells using cationic polymers and a method for removing dead skin cells using a sheet-type cosmetic composition composed of a film-forming cosmetic layer and a moisture-permeable substrate. However, although the conventional methods for removing dead skin cells and keratin plugs are effective in their removal, they are not only inconvenient to perform or use, but also have the problem of not being able to remove unnecessary dead skin cells or keratin plugs from the skin surface at a desired time while carrying them around. Therefore, there is a need for the development of an adhesive sheet for removing dead skin cells and keratin plugs that can effectively and easily remove unnecessary dead skin cells and keratin plugs from the skin surface without putting a burden on the skin.

[0005] [Prior Art Literature]

[0006] [Patent Document]

[0007] (Patent Document 1) Republic of Korea Patent Publication No. 10-2011-0113904 (Published on October 19, 2011)

[0008] The technical challenge of the present disclosure is to provide a hydrocolloid sheet having an exfoliating performance that can remove unnecessary dead skin cells and keratin plugs on the skin surface simply by attaching it to the skin.

[0009] The present disclosure provides, in one embodiment, a hydrocolloid sheet having an exfoliating performance, comprising a release layer, a hydrocolloid layer laminated on the upper surface of the release layer and containing an adhesive, an absorbent, and an exfoliating agent, and a substrate layer laminated on the upper surface of the hydrocolloid layer and protecting the hydrocolloid layer.

[0010] In addition, the hydrocolloid layer may include 20 to 40 parts by weight of an absorbent and 0.1 to 15 parts by weight of an exfoliating agent based on 100 parts by weight of an adhesive.

[0011] In addition, the adhesive may be at least one selected from the group consisting of SIS rubber, SI rubber, SEBS rubber, SBS rubber, and PIB rubber.

[0012] In addition, the absorbent may be at least one selected from the group consisting of sodium carboxymethyl cellulose (CMC), cellulose gum, carbomer, xanthan gum, gelatin, collagen, pectin, hyaluronic acid, guar gum, sodium alginate, agar, glucomannan, and gum arabic.

[0013] Additionally, the exfoliating agent may be at least one selected from the group consisting of salicylic acid, benzoyl peroxide, glycolic acid, lactic acid, malic acid, citric acid, and tartaric acid.

[0014] Additionally, the exfoliant may be salicylic acid or benzoyl peroxide.

[0015] Additionally, the heterogeneous layer may have a thickness of 50 to 150 ㎛.

[0016] Additionally, the hydrocolloid layer may have a thickness of 100 to 600 μm.

[0017] Additionally, the substrate layer may have a thickness of 10 to 50 ㎛.

[0018] In addition, the substrate layer and the release layer may be at least one selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate.

[0019] The present disclosure provides a method for producing a hydrocolloid sheet having an exfoliating performance, comprising the steps of (a) preparing a mixture by mixing 20 to 40 parts by weight of an absorbent and 0.1 to 15 parts by weight of an exfoliating agent with 100 parts by weight of an adhesive, (b) forming a hydrocolloid layer (200) by coating the mixture of step (a) on a release layer, and (c) forming a substrate layer on the upper surface of the hydrocolloid layer of step (b).

[0020] According to the present disclosure, a hydrocolloid sheet having an exfoliating performance capable of removing unnecessary dead skin cells and keratin plugs on the skin surface by simply attaching it to the skin can be provided.

[0021] In addition, a hydrocolloid sheet having exfoliating performance and excellent adhesion to the skin can be provided.

[0022] In addition, a hydrocolloid sheet having exfoliating properties that is non-irritating to the skin can be provided.

[0023] FIG. 1 illustrates a hydrocolloid sheet having exfoliating performance according to one embodiment of the present disclosure.

[0024] FIG. 2 is a flowchart showing a method for manufacturing a hydrocolloid sheet having exfoliating performance according to another embodiment of the present disclosure.

[0025] Figure 3 shows the results of analyzing the keratin improvement effect of sheets manufactured according to examples and comparative examples.

[0026] Figure 4 shows the results of analyzing the absorbency of sheets manufactured according to examples and comparative examples.

[0027] The present disclosure provides, in one embodiment, a hydrocolloid sheet having an exfoliating performance, comprising a release layer, a hydrocolloid layer laminated on the upper surface of the release layer and containing an adhesive, an absorbent, and an exfoliating agent, and a substrate layer laminated on the upper surface of the hydrocolloid layer and protecting the hydrocolloid layer.

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different embodiments and is not limited to the embodiments described herein. Like reference numerals designate similar parts throughout the specification.

[0029]

[0030] The present invention provides a hydrocolloid sheet having an exfoliating performance, which comprises, in one embodiment, a release layer (100), a hydrocolloid layer (200) laminated on the upper surface of the release layer (100) and containing an adhesive, an absorbent, and an exfoliating agent, and a substrate layer (300) laminated on the upper surface of the hydrocolloid layer (200) and protecting the hydrocolloid layer (200).

[0031] The heterogeneous layer (100) serves as a support that supports the hydrocolloid layer (200) and also prevents contamination from entering from the outside and protects the hydrocolloid layer (200) from external impact.

[0032] The heterogeneous layer (100) may be at least one selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate, and specifically, may be polyethylene terephthalate (PET).

[0033] The release layer (100) is in the form of a film, and may be a film made of PET, and more specifically, may be a PET film subjected to silicone release treatment.

[0034] There is no limitation on the method for manufacturing the heterogeneous layer (100), and a commercially available PET film can be purchased and used.

[0035] In addition, the thickness of the heteromorphic layer (100) is not particularly limited, but the average thickness of the heteromorphic layer (100) may be 50 to 150 ㎛, specifically 80 to 120 ㎛, and more specifically 90 to 110 ㎛.

[0036] If the average thickness of the release layer (100) is less than 50 ㎛, the role of protecting the hydrocolloid sheet from external impact is not good, the appearance is not good, and there is a problem of reduced workability when forming a hydrocolloid layer (200) on the release layer (100), and if the average thickness of the release layer (100) exceeds 150 ㎛, there is a problem of reduced flexibility.

[0037] The hydrocolloid layer (200) can be formed by coating on the upper surface of the release layer (100). In addition, the hydrocolloid layer (200) can include an adhesive, an absorbent, and an exfoliating agent.

[0038] The adhesive may be one selected from the group consisting of SIS rubber, SI rubber, SEBS rubber, SBS rubber and PIB rubber, and may be specifically SIS rubber.

[0039] The absorbent may be at least one selected from the group consisting of sodium carboxymethyl cellulose, cellulose gum, carbomer, xanthan gum, gelatin, collagen, pectin, hyaluronic acid, guar gum, sodium alginate, agar, glucomannan, and gum arabic, and may be specifically sodium carboxymethyl cellulose.

[0040] The exfoliating agent may be at least one selected from the group consisting of salicylic acid, benzoyl peroxide, glycolic acid, lactic acid, malic acid, citric acid, and tartaric acid, and may be specifically salicylic acid or benzoyl peroxide.

[0041] The hydrocolloid layer (200) may include 20 to 40 parts by weight of an absorbent and 0.1 to 15 parts by weight of an exfoliating agent based on 100 parts by weight of an adhesive.

[0042] For example, when salicylic acid is used as an exfoliant, the content of the exfoliant may include 1 to 2 parts by weight, and when benzoyl peroxide is used as an exfoliant, the content may include 0.1 to 15 parts by weight.

[0043] If the content of the exfoliator exceeds the above range, the exfoliating effect may not be effective or side effects such as skin trouble may occur.

[0044] If the content of the absorbent is less than 20 parts by weight, the absorption rate of the wound material decreases, which reduces the efficacy of the hydrocolloid. If the content of the absorbent exceeds 40 parts by weight, the adhesive strength may decrease, so the above range is preferable.

[0045] Additionally, the hydrocolloid sheet can exhibit a further improved exfoliating effect when it includes an adhesive, an absorbent, and an exfoliating agent in the aforementioned range.

[0046] The adhesive can have an adhesive strength of 500 to 2,000 gf / 25mm.

[0047] If the adhesive strength of the adhesive is less than 500 gf / 25mm, the exfoliating effect and adhesive strength are reduced due to the reduced adhesive performance, and if the adhesive strength of the adhesive exceeds 2,000 gf / 25mm, it may cause damage to the skin when peeling it off from the face after use.

[0048] The average thickness of the hydrocolloid layer (200) may be 100 to 600 μm, specifically 150 to 350 μm, and more specifically 300 μm.

[0049] If the average thickness of the hydrocolloid layer (200) is less than 100 ㎛, the skin exfoliation effect may be reduced, and if the average thickness of the hydrocolloid layer (200) exceeds 600 ㎛, the overall thickness of the sheet may increase, productivity may be reduced, and flexibility may be reduced.

[0050] A base layer (300) that protects the hydrocolloid layer (200) from external contamination, prevents external impact, and smooths facial wrinkles can be formed on the upper surface of the hydrocolloid layer (200).

[0051] The substrate layer (300) may be at least one selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate, and may be polyurethane.

[0052] For example, a hydrocolloid sheet may be a sheet in which a hydrocolloid layer (200) is formed between a release layer (100) made of PET and a substrate layer (300) made of polyurethane.

[0053] The substrate layer (300) is in the form of a film, and may be specifically a silicone-released film.

[0054] The method for manufacturing the substrate layer (300) is not limited.

[0055] In addition, the thickness of the substrate layer (300) is not particularly limited, but the average thickness of the substrate layer (300) may be 10 to 50 ㎛, specifically 15 to 30 ㎛, and more specifically 20 ㎛.

[0056] If the average thickness of the substrate layer (300) is less than 10 ㎛, the function of protecting the hydrocolloid layer (200) may be reduced, and if the average thickness of the substrate layer (300) exceeds 50 ㎛, there is a problem of reduced flexibility and poor wearing comfort.

[0057]

[0058] In another embodiment, the present invention provides a method for producing a hydrocolloid sheet having an exfoliating performance, comprising the steps of (a) preparing a mixture by mixing 20 to 40 parts by weight of an absorbent and 0.1 to 15 parts by weight of an exfoliating agent with 100 parts by weight of an adhesive, (b) forming a hydrocolloid layer (200) by coating the mixture of step (a) on a release layer (100), and (c) forming a substrate layer (300) on the upper surface of the hydrocolloid layer (200) of step (b).

[0059]

[0060] Step a) of preparing a mixture

[0061] As shown in Fig. 2, a step (S100) of preparing a mixture is performed.

[0062] In step a), the mixture can be prepared by mixing 20 to 40 parts by weight of an absorbent and 0.1 to 15 parts by weight of a callus remover with 100 parts by weight of an adhesive.

[0063] There are no restrictions on the mixing method as long as it can sufficiently mix all ingredients.

[0064]

[0065] Step b) forming a hydrocolloid layer

[0066] Next, as shown in Fig. 2, a step (S200) of forming a hydrocolloid layer (200) is performed.

[0067] The mixture prepared in step a) can be coated on the release layer (100) to form a hydrocolloid layer (200) on the upper surface of the release layer (100).

[0068] At this time, the thickness of the heterogeneous layer (100) is not particularly limited, but one having an average thickness of 50 to 150 ㎛ can be used, specifically one having an average thickness of 80 to 120 ㎛, and more specifically one having an average thickness of 90 to 110 ㎛ can be used.

[0069] The release layer (100) may be a film that has been released with silicone.

[0070] The method of coating the mixture on the heterogeneous layer (100) is not limited, and the coating can be performed so that the average thickness of the hydrocolloid layer (200) is 100 to 600 ㎛, specifically 150 to 350 ㎛, and more specifically 300 ㎛.

[0071] If the average thickness of the hydrocolloid layer (200) is less than 100 ㎛, the skin exfoliation effect may be reduced, and if the average thickness of the hydrocolloid layer (200) exceeds 600 ㎛, the overall thickness of the sheet may increase, productivity may be reduced, and flexibility may be reduced.

[0072] The heterogeneous layer (100) may be at least one selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate, and specifically, may be polyethylene terephthalate (PET).

[0073] The manufacturing method of the heterogeneous layer (100) is not limited.

[0074]

[0075] Step c) of forming the substrate layer

[0076] Finally, as shown in Fig. 2, a step (S300) of forming a substrate layer (300) is performed.

[0077] The step of forming the substrate layer (300) can be formed by laminating a film-shaped substrate layer (300) on a hydrocolloid layer (200).

[0078] The substrate layer (300) and the hydrocolloid layer (200) can be easily bonded by the adhesive included in the hydrocolloid layer (200).

[0079] At this time, the substrate layer (300) may be a film that has been released with silicone.

[0080] In addition, the thickness of the substrate layer (300) is not particularly limited, but a substrate layer (300) having an average thickness of 10 to 50 ㎛ can be used, specifically 15 to 30 ㎛, and more specifically 20 ㎛ can be used.

[0081]

[0082] Hereinafter, the present invention will be described in more detail using examples. These examples are intended solely to illustrate the present invention more specifically, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples.

[0083]

[0084] <Example>

[0085] Example 1

[0086] A mixture was prepared by mixing 100 parts by weight of SIS rubber, 30 parts by weight of CMC, and 2 parts by weight of salicylic acid. The prepared mixture was then coated to a thickness of 300 μm on the upper surface of a 100 μm thick PET film that had been silicone-released, thereby preparing a hydrocolloid layer. Thereafter, a 20 μm thick polyurethane film was laminated on the upper surface of the hydrocolloid layer, thereby preparing a hydrocolloid sheet having exfoliating properties.

[0087]

[0088] Example 2

[0089] A hydrocolloid sheet with improved exfoliation performance was manufactured in the same manner as Example 1, but using 10 parts by weight of benzoyl peroxide instead of salicylic acid.

[0090]

[0091] <Comparative Example>

[0092] Comparative Example 1

[0093] A hydrocolloid sheet was manufactured in the same manner as in Example 1, except that salicylic acid was excluded from the hydrocolloid layer.

[0094]

[0095] Comparative Example 2

[0096] A hydrocolloid sheet was manufactured in the same manner as in Example 1, except that CMC was excluded from the hydrocolloid layer.

[0097]

[0098] <Example of an exam>

[0099] Test Example 1: Analysis of skin exfoliation improvement effect

[0100] The skin exfoliation improvement effect of the hydrocolloid sheets manufactured according to Examples 1 and 2 and Comparative Examples 1 and 2 was analyzed and shown in Figure 3 below.

[0101] The test method is as follows.

[0102] Ten evaluators aged 25 to 35 years were tested, and after washing the test area (face) with a mild cleanser, the test area was left to stand for 20 minutes under the measurement environment conditions of 22℃ and 50% relative humidity after 2 hours, and the test area was exposed 10 minutes before measurement. Keratin was collected from the upper cheek area of ​​the evaluator using keratin tape. Samples of the examples and comparative examples were simultaneously attached to a location close to the keratin tape collection area and removed after 24 hours. Keratin was collected from the corresponding location using keratin tape. After 3 and 7 days of evaluation, the area was washed with a mild cleanser and keratin was collected from the same evaluation area again. The area of ​​keratin shed on the keratin tape was analyzed using Image Pro Analyzer, and the keratin improvement effect was expressed as the amount of keratin detected (%).

[0103] As can be seen in Fig. 3, the results of analyzing the amount of dead skin cells detected show that the hydrocolloid sheets manufactured according to Examples 1 and 2 are more effective than those manufactured according to Comparative Examples 1 and 2.

[0104]

[0105] Test Example 2: Absorbency Evaluation

[0106] The absorbency of the sheets manufactured according to Examples 1 and 2 and Comparative Examples 1 and 2 was analyzed and shown in Fig. 4.

[0107] The absorption evaluation method is as follows.

[0108] The manufactured commercial product was cut into 2 cm length and width sizes, the initial weight (W1) was measured, and then placed in distilled water at 37°C, and the weight (W2) was measured after 48 hours.

[0109] And the absorbance (%) was calculated according to the following mathematical formula 1.

[0110] [Mathematical Formula 1]

[0111] Absorbance = (W2 / W1) × 100

[0112] Referring to Figure 4, it can be confirmed that the absorbency of Comparative Example 1 excluding salicylic acid is lower than that of Examples 1 and 2, and in particular, it can be confirmed that the absorbency of Comparative Example 2 excluding CMC is drastically reduced.

[0113] That is, we can see that the absorption rate is further improved when salicylic acid and CMC are used together.

[0114] According to the present disclosure, a hydrocolloid sheet having an exfoliating performance capable of removing unnecessary dead skin cells and keratin on the skin surface simply by attaching it to the skin is provided.

Claims

1. Heteromorphic layer, A hydrocolloid layer laminated on the upper surface of the above heteromorphic layer and containing an adhesive, an absorbent, and a callus remover, A substrate layer laminated on the upper surface of the hydrocolloid layer and protecting the hydrocolloid layer, Hydrocolloid sheet with exfoliating properties.

2. In paragraph 1, The above hydrocolloid layer, Based on 100 parts by weight of the adhesive, comprising 20 to 40 parts by weight of the absorbent and 0.1 to 15 parts by weight of the exfoliating agent. Hydrocolloid sheet with exfoliating properties.

3. In paragraph 1, The above adhesive is, At least one selected from the group consisting of SIS rubber (Styrene Isoprene Styrene block copolymer), SI rubber (Styrene Isoprene Styrene block copolymer), SEBS rubber (Styrene Ethylene Butylene Styrene block copolymer), SBS rubber (Styrene Butadiene Styrene block copolymer) and PIB rubber (Polyisobutylene). Hydrocolloid sheet with exfoliating properties.

4. In paragraph 1, At least one selected from the group consisting of sodium carboxymethyl cellulose, cellulose gum, carbomer, xanthan gum, gelatin, collagen, pectin, hyaluronic acid, guar gum, sodium alginate, agar, glucomannan (Konjac), and Arabic gum. Hydrocolloid sheet with exfoliating properties.

5. In paragraph 1, The above exfoliating agent is, At least one selected from the group consisting of salicylic acid, benzoyl peroxide, glycolic acid, lactic acid, malic acid, citric acid, and tartaric acid. Hydrocolloid sheet with exfoliating properties.

6. In paragraph 1, The above exfoliating agent is, Salicylic acid or benzoyl peroxide, Hydrocolloid sheet with exfoliating properties.

7. In paragraph 1, The above heterogeneous layer is, Having a thickness of 50 to 150 ㎛, Hydrocolloid sheet with exfoliating properties.

8. In paragraph 1, The above hydrocolloid layer, Having a thickness of 100 to 600 ㎛, Hydrocolloid sheet with exfoliating properties.

9. In paragraph 1, The above-mentioned layer is, Having a thickness of 10 to 50 ㎛, Hydrocolloid sheet with exfoliating properties.

10. In paragraph 1, The above-mentioned substrate layer and the above-mentioned heteromorphic layer are, At least one selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane and polyethylene terephthalate, Hydrocolloid sheet with exfoliating properties. 11.(a) A step of preparing a mixture by mixing 20 to 40 parts by weight of an absorbent and 0.1 to 15 parts by weight of a callus remover with 100 parts by weight of an adhesive. (b) a step of forming a hydrocolloid layer by coating the mixture of step (a) on a heteromorphic layer, and (c) a step of forming a substrate layer on the upper surface of the hydrocolloid layer of step (b); A method for manufacturing a hydrocolloid sheet having exfoliating properties.

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