KR102572532B1 - hydrocolloid mask pack and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a hydrocolloid mask pack and a manufacturing method thereof, and more particularly, to a hydrocolloid composition composed of a hydrophobic elastic polymer matrix and hydrocolloid particles on one or both sides of a base layer so as to have excellent skin adhesion even after repeated stretching and contraction It relates to a coated hydrocolloid mask pack and a manufacturing method thereof.

Description

Hydrocolloid mask pack and manufacturing method thereof { hydrocolloid mask pack and manufacturing method thereof }

The present invention relates to a hydrocolloid mask pack and a manufacturing method thereof, and more particularly, to a hydrocolloid composition composed of a hydrophobic elastic polymer matrix and hydrocolloid particles on one or both sides of a base layer so as to have excellent skin adhesion even after repeated stretching and contraction It relates to a coated hydrocolloid mask pack and a manufacturing method thereof.

A mask pack is a product in which a support sheet is impregnated with a liquid or gel cosmetic composition for skin health such as moisturizing, waste removal, and whitening in the field of cosmetics, and is configured to be in contact with the face for a long time to supply nutrients to the skin. points to

Recently, various types of cosmetics are being sold in the market, but among them, mask packs are a product that many consumers are continuously looking for because of their easy usability and excellent moisturizing effect even after one-time use.

Consumer preference for mask packs is greatly increasing due to the convenience of attaching them to the face and removing them, and the development and consumption of various types of products are active recently.

Mask packs can be generally classified into three types depending on the formulation. The first is a product in which essence is added to a non-woven fabric using synthetic fibers or cellulose fibers. The second is a hydrogel type mask product using natural gum. The third is a product using bio-cellulose, a polymer material produced by fermenting microorganisms in fruit water such as coconut.

Among them, hydrogel is a material with a three-dimensional hydrophilic polymer network structure using water as a dispersion medium. It absorbs about 20% or more of the total weight of water, so it not only has flexibility like natural tissue, but also has a soft touch. etc., it is manufactured and used in various types of packs to maintain skin beauty.

Looking at the prior art for the hydrogel mask pack as described above, Korean Patent Publication No. 10-2016-0019306 (February 19, 2016) applies alginate or alginate aqueous solution on a gelatin hydrogel layer, and divalent Or, a method for producing a double hydrogel mask pack by treating trivalent cations or salts thereof or an aqueous solution containing them is proposed, and Korean Patent Registration No. 10-1695834 (2017. 01. 13.) discloses a 2- A hydrogel mask pack with excellent oxygen permeability containing hydroxyl methacrylate (2-hydroxyethyl methacrylate, HEMA) and sodium acrylate monomers as active ingredients is proposed.

However, the hydrogel mask pack according to the prior art is prepared by adding water and polyhydric alcohol to carrageenan and gum, followed by heating and stirring at 60 to 85 ° C to form a gel having a three-dimensional network structure. Therefore, in the case of a hydrogel mask pack, it is manufactured in the form of a gel having a three-dimensional network structure, and it is inconvenient to use due to poor elasticity and elasticity.

Accordingly, adhesion to curved parts such as the face is poor, and moisture is gradually evaporated and dried over time after being attached to the face, so the mask pack is separated from the face and the skin adhesion is poor.

The present invention is to provide a hydrocolloid mask pack that can be stably attached to the skin due to its excellent elasticity and skin adhesion, and a method for manufacturing the same. However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problem, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The hydrocolloid mask pack of the present invention for solving the above problems is composed of a base layer; and a hydrocolloid composition coated on one or both surfaces of the base layer, wherein the hydrocolloid composition includes a hydrophobic elastic polymer matrix; and hydrocolloid particles dispersed in the hydrophobic elastomer matrix, wherein the base layer is a polyurethane film or nonwoven fabric, and the hydrophobic elastomer matrix is a styrene-isoprene-styrene triblock copolymer. copolymer, SIS) or styrene-butadiene-styrene copolymer (Styrene-Butadiene-Styrene block copolymer, SBS) is preferred.

In addition, the hydrocolloid particles are selected from the group consisting of gelatin, collagen, pectin, carboxymethyl cellulose (CMC), ethyl cellulose, silk fibroin, xanthan gum, or alginate crosslinked by calcium ions At least one, wherein the hydrocolloid composition is mineral oil, ester oil, glycerine paraffin, propylene oxide-ethylene oxide copolymer and It may further include a plasticizer that is any one of polypropylene glycol, and the hydrocolloid composition is any one of collagen, vitamin, niacin amide, hyaluronic acid, and ceramide. It is preferable to further further include the above functional material.

And the manufacturing method of the hydrocolload mask pack according to the present invention, the first step of preparing a base layer; A second step of mixing the hydrocolloid composition; A third step of heating the hydrocolloid composition prepared in the second step to 60 to 120 ° C and then applying it to one side or both sides of the base layer; A fourth step of preparing a mask pack sheet by cooling and drying the hydrocolloid composition applied to one or both sides of the base layer in the third step; and a fifth step of cutting the mask pack sheet into a mask shape.

After being attached to the skin, the hydrocolloid mask pack according to the present invention can be attached to the skin without being torn or deformed even after repeated stretching and contraction several times. there is. In addition, since the skin adhesion is excellent, the user can move or perform activities even when the mask pack is covered on the face, and the tensile strength and elasticity of the mask pack can be improved, so that the mask pack is not easily torn. In particular, it has excellent skin adhesion and is effective in enabling nutrients contained in the essence to be effectively delivered to the skin.

1 is a schematic diagram for explaining a hydrogel and a hydrocolloid,
2 is a diagram illustrating the shape of a hydrocolloid mask pack,
3 is a cross-sectional view of a hydrocolloid mask pack according to the present invention,
4 is a product picture of a hydrocolloid mask pack according to the present invention,
5 is a view for explaining the manufacturing process of the hydrocolloid mask pack according to the present invention.

In this application, terms such as "comprise", "have" or "have" are intended to indicate that there is a feature, number, step, component, part, or combination thereof described in the specification, but one or more other It should be understood that it does not preclude the possibility of addition or existence of features, numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. In order to facilitate overall understanding in the description of the present invention, the same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

Hereinafter, a hydrocolloid mask pack according to the present invention and a manufacturing method thereof will be described in detail with reference to the accompanying drawings. 1 attached to the present invention is a schematic diagram for explaining a hydrogel and a hydrocolloid, Figure 2 is a diagram illustrating the shape of a hydrocolloid mask pack, Figure 3 is a cross-sectional view of a hydrocolloid mask pack according to the present invention, Figure 4 is a product picture of the hydrocolloid mask pack according to the present invention, Figure 5 is a view for explaining the manufacturing process of the hydrocolloid mask pack according to the present invention.

In general, a hydrogel refers to a gel using water as a dispersion medium, and a hydrocolloid refers to a hydrophobic elastomer in which hydrocolloid particles are dispersed.

That is, as shown in FIG. 1, the hydrogel is obtained by polymerizing a water-soluble polymer by polymerizing a water-soluble monomer, and then crosslinking the water-soluble polymer using a crosslinking agent to obtain 3 It has a dimensional network structure.

In general, a hydrogel is a network structure in which water-soluble polymers form three-dimensional crosslinks by physical (hydrogen bonds, van der Waals forces, hydrophobic interactions, or polymer crystals) or chemical (covalent bonds) bonds. It refers to a substance that does not dissolve in the aquatic environment and can contain significant amounts of water.

On the other hand, hydrocolloid has a paste form in which hydrophilic particles are dispersed in a hydrophobic elastomer. Therefore, hydrocolloids have the properties of a gel, elasticity and adhesiveness like rubber.

Therefore, the hydrogel is formed in a three-dimensional network structure, has a gel-like shape, and has a characteristic that it is cut even with a small external force due to lack of elasticity and stretchability. On the other hand, hydrocolloids are composed of hydrophilic particles and hydrophobic elastomers that provide adhesiveness to the skin and have elasticity, so they have excellent skin adhesiveness and elasticity.

A hydrocolloid mask pack according to an embodiment of the present invention is composed of a base layer 20 and a hydrocolloid composition 10 coated on one or both sides of the base layer 20, as shown in FIG. , The hydrocolloid composition (10) is a hydrophobic elastomer matrix (Hydrophobic Elastomer Matrix, hereinafter HEM); And it is characterized by consisting of hydrocolloidal particles (HCP) dispersed in the HEM.

Figure 3 shows a cross-section of a hydrocolloid mask pack according to the present invention, which is provided to consumers in a state in which a hydrocolloid composition 10 of a certain thickness is coated on one or both sides of the base layer 20, and the consumer By attaching the colloidal composition 10 to the face or a specific area, various functional substances included in the hydrocolloid composition 10 are supplied to the skin.

According to the present invention, the base layer 20 is preferably a polyurethane film or non-woven fabric.

When the base layer 20 is made of nonwoven fabric, it preferably has a basis weight of 7.0 to 70.0 g/m 2 and a thickness of 100 to 500 μm. If it is less than the above basis weight and thickness, it is easy to tear or wrinkle, and it is difficult to serve as a support body due to weak tensile strength.

Therefore, the nonwoven fabric constituting the base layer 20 according to the present invention preferably has the basis weight and thickness as described above.

In addition, when the base layer 20 is composed of a polyurethane film, the polyurethane film is mixed with polyurethane, a surfactant, a solvent, etc. to prepare a polyurethane mixture, and then coated on the surface of the release film and solidified, It is prepared by performing a water washing and drying process. The polyurethane film prepared as described above preferably has a thickness of 15 to 50 μm.

In addition, according to the present invention, the hydrocolloid composition 10 may be coated on one or both sides of the base layer 20 . The hydrocolloid composition 10 may be composed of a hydrophobic elastic polymer matrix and hydrocolloid particles, but is not limited thereto and may be variously selected depending on the use of the composition.

In this case, the hydrophobic elastomer matrix may be a Styrene-Isoprene-Styrene Triblock copolymer (hereinafter referred to as SIS) or a styrene-butadiene-Styrene block copolymer (hereinafter referred to as SBS). However, it is not limited thereto.

In the SIS or SBS, the content of styrene is in the range of 10 to 25% by weight, and a copolymer having a weight average molecular weight of 100,000 to 140,000 is particularly preferred.

When a hydrophobic elastomer that satisfies the above conditions is used as a matrix, the material itself has excellent elasticity and recovery rate, so it has excellent skin adhesion to the curved face surface and has no irritation to the skin.

In addition, the hydrocolloid particles dispersed in the hydrophobic elastomer matrix are three-dimensionally crosslinked by a physical bond such as a hydrogen bond, van der Waals force, or a hydrophobic interaction, or a chemical bond such as a covalent bond. It is a particle having a network structure forming a high water content.

The hydrophilic polymer constituting these hydrocolloid particles is crosslinked by, for example, gelatin, collagen, pectin, carboxymethyl cellulose (CMC), ethyl cellulose, silk fibroin, xanthan gum or calcium ions. alginate or a combination thereof.

The hydrocolloid composition 10 may further include a plasticizer for reducing viscosity and increasing flexibility of the hydrophobic elastomer. The plasticizer is mineral oil, ester oil, or glycerine. ) may be any one of paraffin, propylene oxide-ethylene oxide copolymer, and polypropylene glycol. The plasticizer is not limited thereto, and may also vary depending on the type of the hydrophilic polymer.

In addition, the hydrocolloid composition 10 of the present invention may further include a small amount of functional ingredients. In the present invention, the functional ingredient is a material capable of exhibiting functions such as moisture content, whitening, wrinkle improvement, and UV protection when applied to the skin, and includes both liquid and solid materials.

According to the present invention, examples of the functional ingredient may be at least one selected from the group consisting of collagen, vitamin, niacin amide, hyaluronic acid, and ceramide.

The collagen is a fibrous protein found in animals, especially mammals, and vitamins perform antioxidant functions and cell proliferation and differentiation control functions, and thus are deeply related to skin care. In addition, niacinamide not only cleans the skin, but also improves oily and troubled skin and activates skin cells to promote collagen secretion. Hyaluronic acid maintains moisture and elasticity in the skin and promotes wound healing. has the effect of Ceramide is a natural protective barrier component that strengthens the skin barrier as a component of the skin barrier and prevents moisture evaporation in the stratum corneum.

The present invention includes the functional material as described above, thereby stabilizing the skin tissue when using a mask pack,

It can exert excellent effects on metabolism promotion, moisturizing, pigment change and skin aging.

According to one embodiment of the present invention, the hydrocolloid composition 10 includes 60 to 75% by weight of a hydrophobic elastomer matrix, 10 to 30% by weight of hydrocolloid particles, 5 to 10% by weight of a plasticizer, and 5 to 10% by weight of a functional material. 10% by weight.

When the hydrocolloid composition 10 has the above composition ratio, the elasticity and elasticity of the prepared mask pack are the best, and accordingly, the elongation at break is 300% or more, the adhesive strength is 0.1 kgf or more, and the 100% modulus is 0.2 It becomes possible to manufacture a mask pack of MPa or less.

5 shows a manufacturing process of a hydrocolloid mask pack, the base layer 20 wound around the supply roll 30 is continuously supplied, and one surface of the base layer 20 or The hydrocolloid composition 10 is uniformly applied on both sides.

As described above, the hydrocolloid composition 10 is applied to the base layer 20, cured, and cut to produce a mask pack sheet 50 capable of manufacturing a mask pack.

That is, the hydrocolloid composition 10 of the present invention may be melted at 60 to 120° C. to be in a liquid state, and after liquefying the hydrocolloid composition 10, a plasticizer or functional ingredient may be additionally mixed.

The hydrocolloid composition 10 prepared in a liquid state after being melted may be applied to the base layer 20 using a known method.

That is, the coating of the hydrocolloid composition 10 may be performed using a known method such as roll coating, bar coating, film coater coating, or casting.

When the hydrocolloid composition 10 is coated, the hydrocolloid composition 10 is supplied between a pair of coating rolls 40 as shown in FIG. 5 .

The coating of the hydrocolloid composition 10 is performed in a high-temperature environment of about 60 to 120 ° C. so that the hydrocolloid composition 10 can be uniformly applied to the surface of the base layer 20, and the hydrocolloid composition ( After 10) is applied, it is cooled to room temperature to harden the hydrocolloid composition 10, so that the mask pack sheet 50 can be manufactured.

According to the present invention, the hydrocolloid composition 10 is preferably applied to one side or both sides of the base layer 20 in a thickness of 50 μm to 250 μm. If the thickness of the hydrocolloid composition 10 applied to the base layer 20 is less than 50 μm, the hydrocolloid layer may tear when attached to the skin, and if it exceeds 250 μm, when attached to the skin There will be a leaking problem.

After curing in the hydlcolloid composition 10 applied as described above, the mask pack sheet 50 for manufacturing a mask pack is completed. By cutting the mask pack sheet 50, it is possible to manufacture a mask pack used by attaching it to the entire face as shown in FIG. 2 (a), and to manufacture a mask pack in a separate form as shown in FIG. 2 (b) possible. In addition, it can be manufactured in the form of a patch-type beauty pack that is used by attaching to a specific part of the body, such as the wrinkles under the eyes as shown in FIG. 2 (c).

Hereinafter, a method for manufacturing a hydrocolloid mask pack according to the present invention will be described.

The manufacturing method of the hydrocolloid mask pack according to the present invention first goes through the step of configuring the base layer 20 as a first step. As described above, the base layer 20 may be composed of a polyurethane film or non-woven fabric. In this case, the polyurethane film preferably has a thickness of 15 to 50 μm, and when composed of a nonwoven fabric, has a basis weight of 7.0 to 70 g/m 2 and preferably has a thickness of 100 to 500 μm.

After the first step, a step of mixing the hydrocolloid composition 10 is performed as a second step. In this case, the hydrocolloid composition 10 may include 60 to 75 wt% of a hydrophobic elastomer matrix, 10 to 30 wt% of hydrocolloid particles, 5 to 10 wt% of a plasticizer, and 5 to 10 wt% of a functional material.

Thereafter, the hydrocolloid composition 10 prepared in the second step is heated to 60 to 120 ° C and then applied to one side or both sides of the base layer 20. As shown in FIG. 5, in the third step, the base layer 20 wound around the supply roll 30 is continuously supplied, and the base layer 20 is continuously supplied to one side or both sides of the base layer 20 through the coating roll 40. The hydrocolloid composition 10 is uniformly applied.

After the application is completed in the third step, a fourth step of manufacturing the mask pack sheet 50 by cooling and drying the applied hydrocolloid composition 10 is performed.

The mask pack sheet 50 manufactured in the fourth step goes through the fifth step of cutting into a mask pack shape, and the manufacture of the hydrocolloid mask pack according to the present invention as shown in FIG. 4 (a) and (b) is completed. do.

Hereinafter, the present invention will be examined in more detail through examples. However, the present invention is not limited only to the following examples.

[Examples 1 to 5]

After preparing the hydrocolloid composition 10 to have the composition ratio shown in Table 1 below, the prepared hydrocolloid composition 10 was coated on one surface of the base layer 20 to a thickness of 100 μm. At this time, the base layer 20 uses a polyurethane film and a nonwoven fabric, the polyurethane film has a thickness of 20 μm, the basis weight of the nonwoven fabric is 40 g/m ² , and the thickness is 340 μm. Thereafter, through a curing process, hydrocolloid mask pack test pieces such as Examples 1 to 5 were prepared.

[Comparative Examples 1 to 2]

After preparing the hydrocolloid composition 10 to have the composition ratio shown in Table 1 below, the prepared hydrocolloid composition 10 was coated on one surface of the base layer 20 to a thickness of 100 μm. The polyurethane film or nonwoven fabric forming the base layer was the same as in Examples 1 to 5, and then subjected to a drying process to prepare hydrocolloid mask pack test pieces as in Comparative Examples 1 to 2.

In addition, the physical properties of the hydrocolloid mask pack test pieces prepared as in Examples 1 to 5 and Comparative Examples 1 to 2, that is, adhesion, elongation at break and 100% modulus were measured in the following manner, and the results are shown in Table 2. was

1) Adhesion

The adhesive strength of the mask pack according to the present invention was evaluated as follows. After preparing two samples by cutting the mask pack into a pair with a width of 15 ± 0.5 mm and a length of 50 mm, cross the 15 mm lengths of the ends of the two samples and press them with a (2,040 ± 45) g rubber roller to adhere them. Then, after fixing both ends of the non-adhesive sample in a universal tester, the load is measured by pulling the crosshead speed at 5 ± 0.5 mm/sec. The load when the adhesive surfaces of the two samples were completely removed was evaluated as adhesive strength.

2) Elongation at break

The length (%) of the mask pack prepared using a universal testing machine was measured by elongation at break while stretching at a tensile rate of 300 mm/min until breakage occurred.

3) 100% modulus

The mask pack manufactured using the universal testing machine was measured as 100% modulus by dividing the load at 100% elongation by the fabric area of the test piece.

Adhesion (kgf) Elongation at break (%) 100% Modulus (MPa) Example 1 0.15 387 0.17 Example 2 0.12 412 0.14 Example 3 0.19 368 0.16 Example 4 0.23 354 0.12 Example 5 0.14 407 0.19 Comparative Example 1 0.02 287 0.54 Comparative Example 2 0.03 274 0.49

Referring to Table 2, the hydrocolloid mask packs according to Examples 1 to 5 all have elongation at break of 300% or more and 100% modulus of 0.2 MPa or less when measured using a universal testing machine. can confirm that

In addition, it can be seen that the adhesive strength of the hydrocolloid mask pack according to the present invention has a measured value of 0.10 kgf or more.

The hydrocolloid composition 10 according to the present invention may include 60 to 75% by weight of a hydrophobic elastomer matrix, 10 to 30% by weight of hydrocolloid particles, 5 to 10% by weight of a plasticizer, and 5 to 10% by weight of a functional material. can

However, in Comparative Example 1, that is, a mask pack made of the hydrocolloid composition 10 composed of 55% by weight of SBS, 35% by weight of collagen, 5% by weight of glycerin, and 5% by weight of collagen, and Comparative Example 2, that is, 75% by weight of SIS and In the case of a mask pack made of the hydrocolloid composition (10) composed of 5% by weight of gelatin, 10% by weight of PPG, and 10% by weight of hyaluronic acid, the adhesive strength is 0.10 kgf or less, and the elongation at break is 300% or less. It can be seen that represents In addition, it can be seen that even in the case of 100% modulus, the measured value is 0.2 MPa or more.

That is, the hydrocolloid mask pack according to the present invention has an elongation at break of 300% or more, a 100% modulus of 0.2 MPa or less, and an adhesive force of 0.10 kgf or more, and is stably attached to the base layer 20 to repeat stretching and contraction. It can also provide excellent adhesion that is not separated from the base layer 20. That is, the hydrocolloid composition 10 of the present invention can be stably adhered to the skin without tearing or being separated from the base layer 20 even after repeated stretching and contraction several times. Therefore, the hydrocolloid mask pack of the present invention can be conveniently and stably attached to any curved part of the body, and has the advantage of easy activity after attachment.

The present invention has been described with reference to the experimental examples shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other experimental examples are possible therefrom. In addition, those skilled in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10: hydrocolloid composition
20: base layer
40: supply roll
50: mask pack sheet

Claims (8)

base layer 20;
It consists of a hydrocolloid composition 10 coated on one or both sides of the base layer 20,
The hydrocolloid composition (10) is a hydrocolloid, characterized in that 60 to 75% by weight of a hydrophobic elastomer matrix, 10 to 30% by weight of hydrocolloid particles, 5 to 10% by weight of a plasticizer and 5 to 10% by weight of a functional material Mask Pack.
The method of claim 1,
The base layer 20 is a hydrocolloid mask pack, characterized in that polyurethane film or non-woven fabric.
The method of claim 1,
Characterized in that the hydrophobic elastomer matrix is a Styrene-Isoprene-Styrene Triblock copolymer (SIS) or a Styrene-Butadiene-Styrene block copolymer (SBS) Hydrocolloid mask pack.
The method of claim 1,
The hydrocolloid particles are at least one selected from the group consisting of gelatin, collagen, pectin, carboxymethyl cellulose, ethyl cellulose, silk fibroin, xanthan gum, or alginate crosslinked by calcium ions. hydrocolloid mask pack.
delete The method of claim 1,
The plasticizer is mineral oil, ester oil, glycerine, paraffin, propylene oxide-ethylene oxide copolymer and polypropylene glycol ), Hydrocolloid mask pack, characterized in that any one of
The method of claim 1,
The functional material is a hydrocolloid mask pack, characterized in that any one or more of collagen, vitamin, niacin amide, hyaluronic acid, and ceramide
A first step of preparing the base layer 20;
A second step of mixing the hydrocolloid composition 10;
A third step of heating the hydrocolloid composition 10 prepared in the second step at 60 to 120 ° C and then applying it to one side or both sides of the base layer 20;
A fourth step of manufacturing a mask pack sheet 50 by cooling and drying the hydrocolloid composition 10 applied on one or both sides of the base layer 20 in the third step; and
A fifth step of cutting the mask pack sheet 50 into a mask pack shape; including,
The hydrocolloid composition (10) is characterized in that it comprises 60 to 75% by weight of a hydrophobic elastomer matrix, 10 to 30% by weight of hydrocolloid particles, 5 to 10% by weight of a plasticizer and 5 to 10% by weight of a functional material Manufacturing method of hydrocolloid mask pack.