Hydrocolloid sheet with exfoliating properties

Abstract

The present disclosure relates to a hydrocolloid sheet with exfoliating properties, comprising a release layer, a hydrocolloid layer laminated on the top surface of the release layer and containing an adhesive, an absorbent, and an exfoliating agent, and a substrate layer laminated on the top surface of the hydrocolloid layer and protecting the hydrocolloid layer. The hydrocolloid sheet with exfoliating properties according to the present disclosure has the effect of removing unwanted keratin and keratin plugs from the surface of the skin simply by applying it to the skin.

Description

[Technical Field]

[0001] The present disclosure relates to a hydrocolloid sheet with exfoliating properties. [Background technology]

[0002] The keratin layer covers the skin of the human body and prevents moisture from evaporating and foreign substances from entering the skin. However, if there is an excessive accumulation of keratin, the skin's texture becomes rough and the skin tone becomes dull. It also prevents the skin from absorbing nutrients.

[0003] If left untreated, keratin and keratin plugs can clog pores, causing various problems such as acne, and the scattered aging cells and irregular melanin pigmentation in the stratum corneum can cause cosmetic problems. These keratin and keratin plugs cannot be removed even with careful face washing, and even commonly used facial cleansers are not sufficient to completely remove keratin deep within pores. Furthermore, if the skin lacks a certain level of moisture and becomes dry, it can cause itching, and in severe cases, microscopic cracks can develop in the skin. This can allow harmful bacteria to enter the gaps and cause skin diseases, so keratin management is essential.

[0004] Existing methods for removing keratin or keratin plugs from the skin surface have been proposed, such as a method for removing keratin plugs using a cationic polymer, or a method for removing keratin plugs using a sheet-shaped cosmetic composition comprising a film-forming cosmetic layer and a moisture-permeable substrate. However, although the conventional methods for removing keratin plugs and keratin are effective, they are inconvenient to carry out or use, and have the problem that they cannot be carried around and can be used to remove unnecessary keratin or keratin plugs from the skin surface at the desired time. Therefore, there is a need for the development of an adhesive sheet for removing keratin and keratin plugs that can effectively and easily remove unnecessary keratin and keratin plugs from the skin surface without putting a strain on the skin. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Korean Patent Publication No. 10-2011-0113904 (Published October 19, 2011) Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem of the present disclosure is to provide a hydrocolloid sheet with keratin removal properties that can remove unwanted keratin and keratin plugs from the skin surface simply by applying it to the skin. [Means for solving the problem]

[0007] In one embodiment, the present disclosure provides a hydrocolloid sheet with exfoliating properties, comprising: a release layer; a hydrocolloid layer laminated on the top surface of the release layer and containing an adhesive, an absorbent, and an exfoliating agent; and a substrate layer laminated on the top surface of the hydrocolloid layer and protecting the hydrocolloid layer.

[0008] The hydrocolloid layer may contain 20 to 40 parts by weight of absorbent and 0.1 to 15 parts by weight of exfoliant, based on 100 parts by weight of adhesive.

[0009] The adhesive may be one or more selected from the group consisting of SIS rubber, SI rubber, SEBS rubber, SBS rubber, and PIB rubber.

[0010] The absorbent may be one or more selected from the group consisting of sodium carboxymethylcellulose (CMC), cellulose gum, carbomer, xanthan gum, gelatin, collagen, pectin, hyaluronic acid, guar gum, sodium alginate, agar, glucomannan, and gum arabic.

[0011] The exfoliant may be one or more selected from the group consisting of salicylic acid, benzoyl peroxide, glycolic acid, lactic acid, malic acid, citric acid, and tartaric acid.

[0012] The exfoliant can also be salicylic acid or benzoyl peroxide.

[0013] The release layer may have a thickness of 50 to 150 μm.

[0014] The hydrocolloid layer may have a thickness of 100 to 600 μm.

[0015] The substrate layer may have a thickness of 10 to 50 μm.

[0016] The base layer and the release layer may be made of one or more materials selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate.

[0017] In another embodiment, the present disclosure provides a method for producing a hydrocolloid sheet with exfoliating properties, the method comprising the steps of: (a) 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 to produce a mixture; (b) coating the mixture from step (a) onto a release layer to form a hydrocolloid layer 200; and (c) forming a substrate layer on top of the hydrocolloid layer from step (b). [Effects of the Invention]

[0018] According to the present disclosure, it is possible to provide a hydrocolloid sheet with keratin removal properties that can remove unwanted keratin and keratin plugs from the skin surface simply by applying it to the skin.

[0019] It is also possible to provide a hydrocolloid sheet with exfoliating properties that has excellent adhesive strength to the skin.

[0020] It is also possible to provide a hydrocolloid sheet with exfoliating properties that is not irritating to the skin. [Brief explanation of the drawings]

[0021] [Figure 1] 1 shows a hydrocolloid sheet with exfoliating properties according to one embodiment of the present invention. [Figure 2] 10 is a flowchart showing a method for manufacturing a hydrocolloid sheet with exfoliating properties according to another embodiment of the present disclosure. [Figure 3] 1 shows the results of analyzing the keratin-improving effect of sheets manufactured according to Examples and Comparative Examples. [Figure 4] 1 shows the results of analyzing the absorbency of sheets manufactured according to the examples and comparative examples. DETAILED DESCRIPTION OF THE INVENTION

[0022] In one embodiment, the present disclosure provides a hydrocolloid sheet with exfoliating properties, comprising: a release layer; a hydrocolloid layer laminated on the top surface of the release layer and containing an adhesive, an absorbent, and an exfoliating agent; and a substrate layer laminated on the top surface of the hydrocolloid layer and protecting the hydrocolloid layer.

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily understand the present invention. However, the present invention may be embodied in various different embodiments and is not limited to the embodiments described herein. The same reference numerals are used throughout the specification to refer to similar parts.

[0024] In one embodiment, the present invention provides a hydrocolloid sheet with exfoliating properties, comprising a release layer 100, a hydrocolloid layer 200 laminated on the top surface of the release layer 100 and containing an adhesive, an absorbent, and an exfoliating agent, and a substrate layer 300 laminated on the top surface of the hydrocolloid layer 200 and protecting the hydrocolloid layer 200.

[0025] The release layer 100 serves as a support for the hydrocolloid layer 200, and also serves to prevent contamination from the outside and protect the hydrocolloid layer 200 from external impacts.

[0026] The release layer 100 is made of one or more materials selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate, and specifically may be polyethylene terephthalate (PET).

[0027] The release layer 100 is in the form of a film, and specifically may be a film made of PET, more specifically a PET film that has been treated with silicone release agent.

[0028] The method for producing the release layer 100 is not limited, and a commercially available PET film can be purchased and used.

[0029] Furthermore, the thickness of the release layer 100 is not particularly limited, but the average thickness of the release layer 100 may be 50 to 150 μm, specifically 80 to 120 μm, and more specifically 90 to 110 μm.

[0030] If the average thickness of the release layer 100 is less than 50 μm, it will not be able to effectively protect the hydrocolloid sheet from external impacts, will have an unsatisfactory appearance, and will have problems such as reduced workability when forming the hydrocolloid layer 200 on the release layer 100.If the average thickness of the release layer 100 exceeds 150 μm, it will have problems such as reduced flexibility.

[0031] The hydrocolloid layer 200 can be formed by coating on top of the release layer 100. The hydrocolloid layer 200 can also include an adhesive, an absorbent, and an exfoliant.

[0032] The adhesive is one selected from the group consisting of SIS rubber, SI rubber, SEBS rubber, SBS rubber and PIB rubber, and specifically may be SIS rubber.

[0033] The absorbent is one or more selected from the group consisting of sodium carboxymethylcellulose, cellulose gum, carbomer, xanthan gum, gelatin, collagen, pectin, hyaluronic acid, guar gum, sodium alginate, agar, glucomannan, and gum arabic, and specifically may be sodium carboxymethylcellulose.

[0034] The exfoliant may be one or more selected from the group consisting of salicylic acid, benzoyl peroxide, glycolic acid, lactic acid, malic acid, citric acid, and tartaric acid, and may specifically be salicylic acid or benzoyl peroxide.

[0035] The hydrocolloid layer 200 may contain 20-40 parts by weight of absorbent and 0.1-15 parts by weight of exfoliant per 100 parts by weight of adhesive.

[0036] For example, if salicylic acid is used as the exfoliant, the exfoliant may comprise 1 to 2 parts by weight, and if benzoyl peroxide is used as the exfoliant, the exfoliant may comprise 0.1 to 15 parts by weight.

[0037] If the content of the exfoliating agent is outside the above range, the exfoliating effect may be ineffective or side effects such as skin troubles may occur.

[0038] If the absorbent content is less than 20 parts by weight, the exudate absorption rate will be low and the hydrocolloid efficacy will be reduced, and if the absorbent content exceeds 40 parts by weight, the adhesive strength may be reduced, so the above range is preferable.

[0039] Furthermore, the hydrocolloid sheet can exhibit an even more improved exfoliating effect when it contains the adhesive, absorbent, and exfoliating agent in the above-mentioned ranges.

[0040] The adhesive may have an adhesive strength of 500 to 2,8000 gf / 25 mm.

[0041] If the adhesive strength is less than 500gf / 25mm, the adhesive performance will be reduced, resulting in a decrease in the exfoliating effect and adhesion, and if the adhesive strength exceeds 2,000gf / 25mm, there is a risk of skin damage when removing the adhesive from the face after use.

[0042] The average thickness of the hydrocolloid layer 200 may be 100 to 600 μm, specifically 150 to 350 μm, and more specifically 300 μm.

[0043] If the average thickness of the hydrocolloid layer 200 is less than 100 μm, the exfoliating effect on the skin may be reduced, and if the average thickness of the hydrocolloid layer 200 is more than 600 μm, the overall thickness of the sheet may increase, which may reduce productivity and flexibility.

[0044] A base layer 300 may be formed on the upper surface of the hydrocolloid layer 200 to protect the hydrocolloid layer 200 from external contamination, protect it from external impacts, and smooth out facial wrinkles.

[0045] The base layer 300 is made of one or more materials selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate, and may be polyurethane.

[0046] As an example, the hydrocolloid sheet may be a sheet in which a hydrocolloid layer 200 is formed between a release layer 100 made of PET and a base layer 300 made of polyurethane.

[0047] The base layer 300 is in the form of a film, and specifically may be a film that has been treated with a silicone release agent.

[0048] The method for manufacturing the base layer 300 is not limited.

[0049] Furthermore, the thickness of the base layer 300 is not particularly limited, but the average thickness of the base layer 300 may be 10 to 50 μm, specifically 15 to 30 μm, and more specifically 20 μm.

[0050] If the average thickness of the base layer 300 is less than 10 μm, the function of protecting the hydrocolloid layer 200 may be reduced, and if the average thickness of the base layer 300 exceeds 50 μm, there is a problem that the flexibility is reduced and the wearing comfort is poor.

[0051] In another embodiment, the present invention provides a method for producing a hydrocolloid sheet with exfoliating properties, comprising the steps of: (a) 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 to produce a mixture; (b) coating the mixture from step (a) onto a release layer 100 to form a hydrocolloid layer 200; and (c) forming a base layer 300 on the upper surface of the hydrocolloid layer 200 from step (b).

[0052] Step (a) of preparing the mixture

[0053] As shown in FIG. 2, a step (S100) of preparing a mixture is performed.

[0054] 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 an exfoliant with 100 parts by weight of an adhesive.

[0055] There are no limitations on the mixing method as long as it is a method that can sufficiently mix all the components.

[0056] Step (b) of forming a hydrocolloid layer

[0057] Next, as shown in FIG. 2, a step (S200) of forming a hydrocolloid layer 200 is performed.

[0058] The mixture prepared in step (a) may be coated on the release layer 100 to form a hydrocolloid layer 200 on the release layer 100 .

[0059] In this case, the thickness of the release layer 100 is not particularly limited, but one having an average thickness of 50 to 150 μm can be used, specifically one having an average thickness of 80 to 120 μm, and more specifically one having an average thickness of 90 to 110 μm can be used.

[0060] The release layer 100 may be a film that has been treated with a silicone release agent.

[0061] The method for coating the mixture onto the release layer 100 is not limited, and the mixture can be coated so that the average thickness of the hydrocolloid layer 200 is 100 to 600 μm, specifically 150 to 350 μm, and more specifically 300 μm.

[0062] If the average thickness of the hydrocolloid layer 200 is less than 100 μm, the exfoliating effect on the skin may be reduced, and if the average thickness of the hydrocolloid layer 200 is more than 600 μm, the overall thickness of the sheet may increase, which may reduce productivity and flexibility.

[0063] The release layer 100 is made of one or more materials selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate, and specifically may be polyethylene terephthalate (PET).

[0064] The method for producing the release layer 100 is not limited.

[0065] Step (c) of forming a substrate layer

[0066] Finally, as shown in FIG. 2, a step (S300) of forming a base layer 300 is performed.

[0067] The step of forming the base material layer 300 can be performed by laminating the film-like base material layer 300 on the hydrocolloid layer 200 .

[0068] The base layer 300 and the hydrocolloid layer 200 can be easily adhered to each other by the adhesive contained in the hydrocolloid layer 200 .

[0069] In this case, the base layer 300 can be a film that has been subjected to a release treatment with silicone.

[0070] Furthermore, the thickness of the base layer 300 is not particularly limited, but a base layer 300 having an average thickness of 10 to 50 μm can be used, specifically 15 to 30 μm, and more specifically 20 μm. [Example]

[0071] The present invention will be described in more detail below using examples. It will be obvious to those skilled in the art that these examples are intended to explain the present invention more specifically and are not intended to limit the scope of the present invention.

[0072] <Example>

[0073] Example 1

[0074] A mixture was prepared by mixing 100 parts by weight of SIS rubber with 30 parts by weight of CMC and 2 parts by weight of salicylic acid, and the mixture was then coated to a thickness of 300 μm on the top surface of a 100 μm thick PET film that had been treated with silicone release agent to prepare a hydrocolloid layer. A 20 μm thick polyurethane film was then laminated on top of the hydrocolloid layer to prepare a hydrocolloid sheet with exfoliating properties.

[0075] Example 2

[0076] The procedure was carried out in the same manner as in Example 1, but 10 parts by weight of benzoyl peroxide was used instead of salicylic acid to produce a hydrocolloid sheet with improved exfoliating properties.

[0077] <Comparative Example>

[0078] Comparative Example 1

[0079] A hydrocolloid sheet was prepared in the same manner as in Example 1, except that salicylic acid was omitted from the hydrocolloid layer.

[0080] Comparative Example 2

[0081] A hydrocolloid sheet was produced in the same manner as in Example 1, except that CMC was omitted from the hydrocolloid layer.

[0082] <Test example>

[0083] Test Example 1: Analysis of the effect of improving skin keratin

[0084] The skin keratin improving effect of the hydrocolloid sheets prepared in Example 1, Example 2, Comparative Example 1 and Comparative Example 2 was analyzed and the results are shown in FIG.

[0085] The test method is as follows.

[0086] Ten evaluators aged 25 to 35 years old washed the test area (face) with a mild cleanser. After two hours, they waited for 20 minutes under measurement environmental conditions of 22°C temperature and 50% relative humidity, and then exposed the test area 10 minutes before measurement. Then, keratin was collected from the maxillary region of the evaluator's cheek using keratinizing tape. Samples from the Example and Comparative Examples were simultaneously applied to a position adjacent to the keratinizing tape collection site and removed after 24 hours. keratin was collected from the same position using keratinizing tape. After 3 and 7 days of evaluation, the test area was washed with a mild cleanser and keratin was collected again from the same evaluation site. The area of ​​keratin removed by the keratinizing tape was analyzed using an Image Pro Analyzer, and the keratin improvement effect was expressed as the amount of keratin detected (%).

[0087] As shown in FIG. 3, the results of analyzing the amount of keratin detected confirmed that the hydrocolloid sheets manufactured in Examples 1 and 2 were more effective than those manufactured in Comparative Examples 1 and 2.

[0088] Test Example 2: Evaluation of absorbency

[0089] The absorbency of the sheets prepared in Example 1, Example 2, Comparative Example 1 and Comparative Example 2 was analyzed and shown in FIG.

[0090] The absorbency evaluation method is as follows.

[0091] The prepared test plate was cut into pieces of 2 cm in length and width, and the initial weight W1 was measured. After that, the test plate was placed in distilled water at 37° C. for 48 hours, and the weight W2 was measured.

[0092] Then, the absorbance (%) was calculated using the following formula 1.

[0093] [Formula 1] Absorbency = (W2 / W1) x 100

[0094] Referring to FIG. 4, it can be seen that the absorbance of Comparative Example 1, which did not contain salicylic acid, was lower than that of Examples 1 and 2. In particular, it can be seen that the absorbance of Comparative Example 2, which did not contain CMC, dropped sharply.

[0095] That is, it can be seen that the absorbency is further improved when salicylic acid and CMC are used together. [Industrial Applicability]

[0096] According to the present disclosure, there is provided a hydrocolloid sheet with keratin removal properties that can remove unwanted keratin and keratin plugs from the skin surface simply by applying it to the skin.

Claims

1. A release layer; a hydrocolloid layer laminated on top of the release layer, the hydrocolloid layer including an adhesive, an absorbent, and an exfoliant; A hydrocolloid sheet with exfoliating properties, comprising: a base layer laminated on the top surface of the hydrocolloid layer to protect the hydrocolloid layer.

2. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the hydrocolloid layer comprises 20 to 40 parts by weight of the absorbent and 0.1 to 15 parts by weight of the exfoliating agent, relative to 100 parts by weight of the adhesive.

3. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the 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).

4. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the absorbent is 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 gum arabic.

5. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the 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.

6. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the exfoliating agent is salicylic acid or benzoyl peroxide.

7. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the release layer has a thickness of 50 to 150 μm.

8. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the hydrocolloid layer has a thickness of 100 to 600 μm.

9. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the substrate layer has a thickness of 10 to 50 μm.

10. 2. The hydrocolloid sheet with exfoliating properties according to claim 1, wherein the base layer and the release layer are made of one or more materials selected from the group consisting of polyolefin, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyurethane, and polyethylene terephthalate.

11. (a) mixing 20-40 parts by weight of an absorbent and 0.1-15 parts by weight of an exfoliant in 100 parts by weight of an adhesive to prepare a mixture; (b) coating the mixture of step (a) onto a release layer to form a hydrocolloid layer; (c) forming a substrate layer on the top surface of the hydrocolloid layer of step (b).

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