WO2021066310A1 - Eco-friendly packaging material for sheet mask pouch, and sheet mask pouch using same - Google Patents

Abstract

According to one embodiment of the present invention, an eco-friendly packaging material for a sheet mask pouch is provided. The packaging material comprises a paper layer and a lower film layer arranged under the paper layer, wherein the lower film layer comprises a biodegradable resin and/or an oxo-biodegradable resin so as to be biodegradable.

Description

Packaging material for eco-friendly mask pack pouch and mask pack pouch using the same

The present invention relates to a packaging material for an eco-friendly mask pack pouch and a mask pack pouch using the same, and specifically, by forming a film layer formed of a biodegradable material on at least one side of the paper layer, biodegradation is possible, and the contents impregnated in the mask pack It relates to a packaging material for a mask pack pouch having excellent barrier properties capable of preventing leakage, and a mask pack pouch using the same.

In general, in order to package seeds, fruits, cosmetic solutions, 　mask packs, etc. Films containing thin films are widely used as packaging paper.

For example, ethylene vinyl alcohol (EVOH) film, polyvinyl alcohol (PVOH) film, polyvinylidene chloride (PVDC) film, polyethylene (PE) film, polypropylene (PP) film, polyethylene terephthalate (PET) film, etc. The thermoplastic resin film of is widely used as a packaging film because of its excellent mechanical strength and good processability.

Among these, a conventional packaging material for a mask pack pouch is formed by laminating a PET film, an aluminum foil, and an LLDPE film, as shown in FIG. 1, and the films constituting such a conventional packaging material have a stable molecular structure and thus have good mechanical properties. However, if it is landfilled without special treatment during disposal, it is hardly decomposed due to chemical and biological stability and accumulates in the ground, shortening the life of the landfill and causing problems of soil contamination.

In order to solve this problem, various researches have recently been conducted on a method of manufacturing a packaging material using bio plastics that are decomposed in nature. Among them, biodegradable films represented by polylactic acid (PLA) are used, but polylactic acid (PLA) films are environmentally friendly, but are susceptible to moisture or moisture and have high air permeability, so when used for packaging, separate treatment (for example, Evaporation coating, lamination with other films, etc.) is required.

For example, in the case of a food packaging material, a packaging material having physical properties such as moisture-proof, water-resistance, and oil-repellency is being developed by laminating paper and an eco-friendly film. However, in the case of food packaging materials, when the food to be packaged is a dry food, it does not place much weight on the properties of water resistance.In particular, in the case of food, due to its characteristics, it is stored frozen/refrigerated or has a short shelf life. It is not significantly affected by the phenomenon of leakage in the vaporized state.

In contrast, in the case of a liquid cosmetic packaging material or a mask pack packaging material impregnated with a liquid cosmetic material, the liquid cosmetic material is deteriorated due to the phenomenon that a minute amount of the liquid cosmetic material is leaked out in a vaporized state during long-term storage and/or distribution. It may become difficult to use because it becomes dry or dry.

Accordingly, there is a need for a packaging material for a mask pack pouch that is eco-friendly and has excellent barrier properties and a mask pack pouch using the same, which can solve such problems.

The present invention is to solve the above problems, by forming a film layer formed of a biodegradable material on at least one side of the paper layer, biodegradation is possible, and excellent barrier properties to prevent leakage of the contents impregnated in the mask pack. An object thereof is to provide a packaging material for a mask pack pouch and a mask pack pouch using the same.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a packaging material for an eco-friendly mask pack pouch is provided. The packaging material, a paper layer; And a lower film layer disposed under the paper layer, and the lower film layer may be biodegradable by including at least one of a biodegradable resin and an oxo-biodegradable resin.

Preferably, the packaging material may have an oxygen permeability of 10 cc/(m2·day·atm) or less at 23°C and 0% relative humidity.

In addition, preferably, the packaging material may have a moisture permeability of 5 g/(m 2 ·day) or less at 38° C. and 100% relative humidity.

^{In addition, preferably, the packaging material has an oxygen permeability of 5 cc/(m 2} ·day·atm) or less at 23° C. and 0% relative humidity, and 2 g/(m 2 ·day) at 38° C. and 100% relative humidity. It may have the following moisture permeability.

In addition, preferably, the lower film layer may have a thickness of 15 to 140 μm.

In addition, preferably, the lower film layer may include a first lower film layer disposed on a lower surface of the paper layer; And a second lower film layer disposed on a lower surface of the first lower film layer, and a thickness of the first lower film layer may be formed to be thinner than a thickness of the second lower film layer.

In addition, preferably, the first lower film layer and the second lower film layer may be formed of different materials.

In addition, preferably, the first lower film layer may have a thickness of 20 μm or less, and the second lower film layer may have a thickness of 15 to 120 μm.

Further, preferably, an upper film layer disposed on the paper layer may be further included, and the upper film layer may be biodegradable, including at least one of the biodegradable resin and the oxidative biodegradable resin.

In addition, preferably, the thickness of the upper film layer is formed to be thinner than that of the lower film layer, but may have a thickness of 20 μm or less.

In addition, preferably, the upper film layer and the lower film layer may be formed of different materials.

In addition, preferably, the biodegradable resin is polylactic acid (PLA) and a copolymer thereof, polycaprolactone (PCL), polyglycolic acid (PGA), polyethersulfone (PES), polybutylene succinate (PBS ), polybutylene succinate-adipate (PBSA), cellulose compounds, polyhydroxyalkylate (PHA), polybutylene adipate-terephthalate (PBAT), polybutylene succinate-terephthalate (PBST) It may be selected from the group consisting of resins and mixtures thereof.

In addition, preferably, it is disposed between the paper layer and the lower film layer, further comprising an adhesive layer for bonding the paper layer and the lower film layer, the adhesive layer is the biodegradable resin or the oxidative biodegradable resin It can be formed as

According to an embodiment of the present invention, an eco-friendly mask pack pouch including at least one of the packaging materials for the eco-friendly mask pack pouch is provided. In the pouch, the packaging material may be stacked up and down, and the lower film layer may form an inner surface of the pouch to contact the mask pack.

According to the present invention, by laminating a biodegradable film layer on a paper layer and replacing all the packaging materials with eco-friendly materials, it may be harmless to the human body and biodegradable in a natural environment at the time of disposal.

In addition, according to the present invention, it is particularly suitable as a packaging material for a mask pack impregnated with a cosmetic liquid or a cosmetic liquid by providing a barrier property by making the oxygen permeability and water permeability to have a predetermined value or less through the lamination of the paper layer and the film layer. Can be used.

In addition, according to the present invention, by adjusting the material, thickness, and number of layers of the upper and lower film layers disposed on the upper and lower surfaces of the paper layer, it is suitable for various uses by having an appropriate barrier property according to the characteristics of the contents packaged by the packaging material. It can be used environmentally.

A brief description of each drawing is provided in order to more fully understand the drawings cited in the detailed description of the present invention.

1 shows a conventional packaging material for a mask pack pouch.

2 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

3 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

4 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

5 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

6A to 6D show test results of measuring oxygen permeability of the packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

7A to 7D illustrate test results of measuring moisture permeability of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible, even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with an understanding of the embodiment of the present invention, the detailed description thereof will be omitted. In addition, embodiments of the present invention will be described below, but the technical idea of the present invention is not limited or limited thereto, and may be modified and variously implemented by those skilled in the art. On the other hand, for convenience described below, the vertical, left, and right directions are based on the drawings, and the scope of the present invention is not necessarily limited to that direction.

Throughout the specification, when a part is said to be "connected" with another part, this includes not only "directly connected" but also "indirectly connected" with another element interposed therebetween. . Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary. In addition, in describing the constituent elements of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are for distinguishing the constituent element from other constituent elements, and the nature, order, or order of the constituent element is not limited by the term.

2 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

Referring to FIG. 2, the packaging material 200 according to an embodiment of the present invention includes a paper layer 210 and a lower film layer 220, and thus may be configured in a double-layer structure.

The paper layer 210 functions as a base layer of the packaging material 200, and at least one film layer may be formed on the upper or lower surface of the paper layer 210 to support the film layer.

Here, the paper layer 210 may be implemented using a variety of types of paper, such as manila paper, cast coated paper (CCP) paper, white paper, thin leaf paper, yellow paper, Korean paper, kraft paper, and whiteboard, and are limited thereto. no.

For example, the paper layer 210 may be implemented using yellow paper or kraft paper, but is not limited thereto. Noruji is widely used as a food packaging material and has a smooth surface. It is a kind of relatively thin 　 wrapping paper made with gloss on one side. Chemical pulp and kraft pulp are used as raw materials. In addition, kraft paper is 　packaging paper made mainly of unbleached kraft, which is a kind of chemical pulp, and is mostly processed into paper and used for 　packing of flour, sugar, fertilizer, feed, and grain. The fiber is long and tough, so it has the advantage of excellent strength.

In one embodiment, the paper layer 210 may be made of high barrier paper coated with an aqueous coating solution including a barrier material on a paper substrate in order to increase barrier properties of moisture and air.

Specifically, the paper layer 210 is a variety of barrier materials, for example, styrene-butadiene-based, styrene-acrylic-based, polyvinyl alcohol, vinylidene chloride polymer, acrylonitrile polymer, vinyl chloride polymer and ethylene vinyl alcohol polymer It may be formed using a high-blocking paper on which a barrier layer is formed by coating an aqueous coating solution including one or more polymers selected from or a copolymer thereof on a paper substrate one or more times.

In this way, the paper layer 210 formed of high barrier paper may have excellent barrier properties to moisture and air. According to an embodiment, the paper layer 210 may have an oxygen permeability of 4 cc/(m²·day·atm) or less at 23°C and 0% relative humidity, and 11g/ at 38°C and 90% relative humidity. It can have a moisture permeability of (㎡·day) or less. However, this is merely an example, and the physical properties of the paper layer 210 are not limited to the above values.

In particular, according to the present invention, by implementing the packaging material 200 using the paper layer 210 having excellent barrier properties, the amount of use of metal materials such as plastics and aluminum can be reduced by about 45%, and thus the amount of carbon emissions It can be reduced by about 48% compared to conventional barrier film packaging.

The paper layer 210 may form the outer surface of the mask pack pouch manufactured using the packaging material 200, and although not shown in FIG. 2, according to an embodiment, a printing layer is formed on the upper surface of the paper layer 210. Can be formed. In addition, for example, a coating layer for protecting the upper surface of the paper layer 210 positioned on the outer surface of the mask pack pouch may be formed on the upper surface of the paper layer 210. In addition, a printing layer and a coating layer may be sequentially stacked on the upper surface of the paper layer 210, which is exemplary and may be variously modified according to an embodiment to which the present invention is applied.

The lower film layer 220 is disposed under the paper layer 210 and may be made of a material capable of biodegradation, including at least one of a biodegradable resin and an oxo-biodegradable resin.

Here, the biodegradable resin is prepared using natural biodegradable resins and petrochemical derived substances that are prepared by preparing sugar from biomass through pretreatment and saccharification, and polymerizing polymeric monomers produced through fermentation. It may contain all petroleum-based biodegradable resins.

For example, polylactic acid (PLA) and copolymers thereof, polycaprolactone (PCL), polyglycolic acid (PGA), polyethersulfone (PES), polybutylene succinate (PBS), polybutylene succinate- Adipate (PBSA), a cellulose compound, polyhydroxyalkylate (PHA), polybutylene adipate-terephthalate (PBAT), polybutylene succinate-terephthalate (PBST) resin, and mixtures thereof It may be selected from the group, but is not limited thereto.

In addition, the oxidative biodegradable resin is manufactured by adding biomass, oxidative biodegradation agent, compatibilizer, biodegradation accelerator, and automatic oxidizing agent to existing general-purpose plastics, and Oxo bio-PP (Polypropylene)-based oxidative biodegradable resin, Oxo bio -It may include various types of oxidative biodegradable resins such as polyethylene (PE)-based oxidative biodegradable resin, but is not limited thereto.

In one embodiment, the lower film layer 220 may be composed of a PLA film made of polylactic acid (PLA) resin. At this time, the PLA film may contain a small amount of other components to improve the physical properties of the PLA film, such as barrier properties, tensile strength, and UV blocking properties of the lower film layer 220, but is not limited thereto, and other components in the PLA film Whether they are included and the types and contents of other components included may be variously changed according to embodiments.

In addition, in one embodiment, the lower film layer 220 may be configured to have a thickness of 15 to 140 μm, preferably, may be configured to have a thickness of 50 to 120 μm, more preferably, 100 It can be configured to have a thickness of ㎛. However, this is only illustrative, and is not limited thereto, and may be changed to various thicknesses to realize an appropriate level of barrier properties for the mask pack and/or contents accommodated in the pouch according to an embodiment to which the present invention is applied.

Meanwhile, although not shown in FIG. 2, an adhesive layer may be formed between the paper layer 210 and the lower film layer 220. For example, an adhesive layer is formed on the lower surface of the paper layer 210, and the lower film layer 220 is formed on the lower surface of the adhesive layer, so that the paper layer 210 and the lower film layer 220 may be adhered by the adhesive layer. . In one embodiment, the adhesive layer may be formed of a biodegradable material like the paper layer 210 and the lower film layer 220. For example, the adhesive layer may be formed of a biodegradable resin or an oxidative biodegradable resin, but is not limited thereto.

The packaging materials 200 are stacked up and down in a size corresponding to each other, and then the edges are sealed, thereby manufacturing a mask pack pouch capable of accommodating the mask pack therein. In this case, the paper layer 210 may form an outer surface of the mask pack pouch, and the lower film layer 220 may form an inner surface of the mask pack pouch to contact the mask pack accommodated therein. At this time, since the mask pack pouch has a predetermined moisture permeability and oxygen permeability, the liquid cosmetic material absorbed and/or impregnated in the mask pack can be prevented from leaking to the outside, and the paper layer 210 and the lower film layer 220 ) Are all made of biodegradable materials, so it is possible to implement an eco-friendly mask pack pouch that can prevent environmental pollution during disposal.

3 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

The packaging material 300 of FIG. 3 is described in the same manner as the packaging material 200 of FIG. 2. Hereinafter, the present embodiment will be described mainly in terms of differences from the previous embodiment, and redundant descriptions will be omitted.

Referring to FIG. 3, the packaging material 300 includes a paper layer 310 and a lower film layer 320, and the lower film layer 320 includes a first lower film layer 322 and a second lower film layer 324. ), it can be configured in a three-fold structure.

As shown, the lower film layer 320 may be composed of a first lower film layer 322 and a second lower film layer 324 stacked in a vertical direction under the paper layer 310. Specifically, the first lower film layer 322 may be disposed on the lower surface of the paper layer 310, and the second lower film layer 324 may be sequentially formed on the lower surface of the first lower film layer 322.

The first lower film layer 322 and the second lower film layer 324 may be configured to be biodegradable by including a biodegradable resin or an oxidizing biodegradable resin. In this case, the first lower film layer 322 and the second lower film layer 324 may be formed of different materials, but are not limited thereto.

In one embodiment, the first lower film layer 322 and the second lower film layer 324 are formed to have different thicknesses, but the thickness of the first lower film layer 322 is It can be formed thinner than the thickness. For example, the first lower film layer 322 may be configured to have a thickness of 20 μm or less, and the second lower film layer 324 may be configured to have a thickness of 15 to 120 μm. Preferably, the first lower film layer 322 may be configured to have a thickness of 10 to 15 μm, and the second lower film layer 324 may be configured to have a thickness of 50 to 100 μm. , But is not limited thereto.

The packaging material 300 according to the present embodiment may be configured to have various moisture permeability and oxygen permeability by adjusting the material and/or thickness of the first lower film layer 322 and the second lower film layer 324.

For example, the first lower film layer 322 may be composed of a PLA film having a thickness of 12 μm, and the second lower film layer 324 may be composed of a PLA film having a thickness of 100 μm, in which case the first lower film layer (322) and the PLA film of the second lower film layer 324 may be composed of the same component, or may be composed of different components from each other. In addition, for example, the first lower film layer 322 may be composed of a biodegradable film having a thickness of 12 μm, and the second lower film layer 324 may be composed of an oxidized biodegradable film having a thickness of 70 μm. 1 The lower film layer 322 may be implemented using various biodegradable films such as a PLA film, a PBS film, and a PBAT film. In addition, for example, the first lower film layer 322 is composed of a PLA film having a thickness of 12 μm, and the second lower film layer 324 is a biodegradable film other than a PLA film having a thickness of 100 μm (for example, PBS film, PBAT film, etc.). However, the above description is for illustrative purposes and is not limited thereto.

4 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

The packaging material 400 of FIG. 4 is described in the same manner as the packaging materials 200 and 300 of FIGS. 2 and 3. Hereinafter, the present embodiment will be described mainly in terms of differences from the previous embodiment, and redundant descriptions will be omitted.

Referring to FIG. 4, the packaging material 400 includes a paper layer 410, a lower film layer 420, and an upper film layer 430, and thus may be configured in a three-fold structure.

As shown, the upper film layer 430 may be formed on the paper layer 410, and the upper film layer 430 includes a biodegradable resin or an oxidative biodegradable resin like the lower film layer 420 By doing so, it can be configured to be biodegradable. In this case, the upper film layer 430 may be formed of a material different from that of the lower film layer 420, but is not limited thereto.

In one embodiment, the upper film layer 430 and the lower film layer 420 are formed to have different thicknesses, but the thickness of the upper film layer 430 may be thinner than that of the lower film layer 420. For example, it is preferable that the upper film layer 430 has a thickness of 20 μm or less, but is not limited thereto.

Like the packaging materials 200 and 300 of the previous embodiment, the packaging material 400 according to the present embodiment also controls the material and/or thickness of the lower film layer 420 and the upper film layer 430 to provide various moisture permeability and oxygen levels. It can be configured to have a transmittance.

Meanwhile, according to an embodiment, the paper layer 410 may be replaced with a biodegradable film partially containing aluminum (Al). For example, a biodegradable film containing less than 5% aluminum serves as a base layer in place of the paper layer 410, so that the lower film layer 420 is formed on the lower surface of the biodegradable film layer containing aluminum, An upper film layer 430 may be formed on the upper surface. At this time, the biodegradable film layer containing aluminum is biodegradable at the time of disposal, like paper, biodegradable and oxidative biodegradable films. Through this, even if some aluminum is included, the film layers constituting the packaging material are all biodegradable, so that it is eco-friendly. Material packaging can be implemented.

5 is a cross-sectional view of a packaging material for an eco-friendly mask pack pouch according to an embodiment of the present invention.

The packaging material 500 of FIG. 5 is described in the same manner as the packaging materials 200, 300, and 400 of FIGS. 2 to 4, and hereinafter, the present embodiment will be described mainly in terms of differences from the previous embodiment, and redundant descriptions will be omitted.

Referring to FIG. 5, the packaging material 500 includes a paper layer 510, a lower film layer 520, and an upper film layer 530, and the lower film layer 520 includes a first lower film layer 522 and By including the second lower film layer 524, it may be configured in a four-fold structure.

In one embodiment, the thickness of the upper film layer 530 and the first lower film layer 522 may be formed to be thinner than the thickness of the second lower film layer 524, and the upper film layer 530 and the first lower film layer 522 The thicknesses of the film layers 522 may be the same or different from each other.

Like the packaging materials 200, 300, and 400 of the previous embodiment, the packaging material 500 according to this embodiment is also made of the first lower film layer 522, the second lower film layer 524, and the upper film layer 530. And/or by controlling the thickness, it may be configured to have various moisture permeability and oxygen permeability.

As described above, according to the present invention, the upper film layers 430, 530 or lower film layers 220, 320 made of biodegradable resin or oxidative biodegradable resin on at least one surface of the paper layers 210, 310, 410, 510, By stacking 420 and 520 to form the packaging material 200, 300, 400, 500, a PET (polyethylene terephthalate) film constituting the conventional packaging material 100 for a mask pack pouch shown in FIG. 1, LLDPE (Linear Low) -Density Polyethylene) film and Al-foil can all be replaced with eco-friendly materials.

In particular, while replacing the existing aluminum foil (Al-foil) with the paper layers (210, 310, 410, 510), a predetermined thickness and barrier on the lower or upper surface of the paper layers (210, 310, 410, 510) Biodegradable/oxidative biodegradable lower film layers (220, 320, 420, 520) or upper film layers (430, 530) are laminated to complement the physical properties of biodegradable/oxidative biodegradable films that are vulnerable to moisture or moisture. By doing so, it is possible to implement the packaging materials 200, 300, 400, 500 having moisture permeability and oxygen permeability below a predetermined value.

For example, the packaging materials 200, 300, 400, 500 according to an embodiment of the present invention may have an oxygen permeability of 10 cc/(m²day·atm) or less at 23°C and 0% relative humidity, and , It may have a moisture permeability of 5g/(m²·day) or less at 38°C and 100% relative humidity. Preferably, it may have an oxygen permeability of 5cc/(m²·day·atm) or less and a moisture permeability of 3g/(m²·day) or less under the same conditions, and more preferably, 3.5cc/(m²) or less under the same conditions. ·Day·atm) or less and an oxygen permeability of 1.5g/(m²·day) or less, but are not limited thereto.

Meanwhile, the above values for oxygen permeability and moisture permeability may represent different values depending on the thickness, material, and number of layers of the lower film layers 220, 320, 420, and 520. Different values may be indicated depending on the presence or absence, thickness, and material. This will be described in more detail with reference to the following test examples.

Hereinafter, the present invention will be described in more detail based on the following examples. However, the following examples are only examples of the present invention, and the scope of the present invention is not limited thereto.

Test Example 1-Measurement of oxygen permeability

After preparing a packaging material (Examples 1 to 4) including a paper layer and a biodegradable film layer according to the present invention and a packaging material (Comparative Example) including a film layer and a barrier coating layer using PLA resin, respectively, the oxygen permeability was measured. I did.

Oxygen permeability measurement is to measure the degree of oxygen permeation of a polymer, packaging film or sheet. Using an OX-TRAM 702 (MOCON, USA) air permeability meter according to the standard measurement method of ASTM D3985 at 23℃ and 0% relative The oxygen permeability in humidity (cc/m2·day·atm) was measured. The test results according to this are shown in Table 1 below, and graphs of the test results for Examples 1 to 4 are shown in Figs. 6A to 6D (Figs. 6A (Example 1), 6B (Example 2)), and Fig. 6C (Example 3) and Fig. 6D (Example 4)).

[Example 1]

As a packaging material of a double paper structure including a paper layer and a lower film layer (see Fig. 2), the lower film layer was composed of a PLA film by using a polylactic acid (PLA) resin as a resin for the lower film layer. The thickness was formed to 100㎛.

[Example 2]

As a packaging material of a four-fold structure including a paper layer, a first lower film layer, a second lower film layer, and an upper film layer (see FIG. 5), a polylactic acid (PLA) resin is used as a first lower film layer and a second lower film. The first lower film layer, the second lower film layer, and the upper film layer were composed of a PLA film by using as resin for the layer and the upper film layer. The thickness of the first lower film layer was 12 μm, the thickness of the second lower film layer was 100 μm, and the thickness of the upper film layer was 12 μm.

[Example 3]

As a packaging material of a three-fold structure including a paper layer, a first lower film layer, and a second lower film layer (see Fig. 3), a general biodegradable resin that is not certified by'OK COMPOST', a biodegradable plastics certification system in Europe, is used. Used as a resin for the first lower film layer, and a PE-based oxidative biodegradable resin as a resin for the second lower film layer, the first lower film layer is a biodegradable film and the second lower film layer is composed of an oxidative biodegradable film I did. The thickness of the first lower film layer was 12 μm, and the thickness of the second lower film layer was 70 μm.

[Example 4]

As a packaging material of a three-fold structure including a paper layer, a first lower film layer, and a second lower film layer (see Fig. 3), a general biodegradable resin that is not certified by'OK COMPOST', a biodegradable plastics certification system in Europe, is used. The first lower film layer is used as a resin, and a certified biodegradable resin certified by'OK COMPOST' is used as the second lower film layer resin, and the first lower film layer is a general biodegradable film and the second lower film layer Consisted of a European certified biodegradable film. The thickness of the first lower film layer was 12 μm, and the thickness of the second lower film layer was 100 μm.

[Comparative Example]

Polylactic acid (PLA) resin was used as the resin of the base film layer, and a barrier coating solution was coated and cured on the upper surface of the base film layer to form a barrier coating layer.

	Example 1	Example 2	Example 3	Example 4	Comparative example
Oxygen permeability (cc/(㎡·day·atm), 0% relative humidity)	1.53	0.77	1.29	3.32	650

Referring to the test results in Table 1, it can be seen that the oxygen permeability of the packaging material according to the embodiment of the present invention represents a value of 3.5 cc/(m²·day·atm) or less, and the embodiment of the present invention is a comparative example. It can be seen that the degree of not permeating oxygen is significantly superior to that of

That is, when the mask pack pouch is manufactured using the packaging material according to an embodiment of the present invention, it is possible to prevent the impregnated cosmetic liquid from being deteriorated or dried during the storage and flow process of the mask pack by effectively blocking the transmission of oxygen.

Test Example 2-Water permeability measurement

Water permeability was measured for the same packaging materials (Examples 1 to 4, Comparative Example) used in Test Example 1.

Moisture permeability measurement is to measure the degree of moisture and/or moisture permeation of a polymer, packaging film or sheet, and PERMATRAN-W 3/33 MA (MOCON Corporation) so that each packaging material reaches moisture according to the standard measurement method of ASTM F1249. , USA) Mounted on a moisture permeability meter, and measured moisture permeability (g/m 2 ·day) at 38° C. and 100% relative humidity. The test results according to this are shown in Table 2 below, and graphs of the test results for Examples 1 to 4 are shown in Figs. 7A to 7D (Figs. 7A (Example 1), 7B (Example 2)), and Fig. 7C (Example 3) and Fig. 7D (Example 4)).

	Example 1	Example 2	Example 3	Example 4	Comparative example
Moisture permeability (g/(㎡·day), 100% relative humidity)	1.45	1.36	1.12	1.02	350

Referring to the test results in Table 2, it can be seen that the moisture permeability of the packaging material according to the embodiment of the present invention represents a value of 1.5 g/(m 2 ·day) or less, and the embodiment of the present invention is compared to the comparative example. It can be seen that the degree of not permeating moisture is remarkably excellent.

That is, when a mask pack pouch is manufactured using the packaging material according to an embodiment of the present invention, moisture is effectively blocked from permeation, thereby effectively preventing the cosmetic liquid impregnated in the mask pack from leaking out of the pouch in the form of moisture. Therefore, it can be confirmed that the packaging material according to the embodiment of the present invention has suitable physical properties as a packaging material for a pouch in which liquid contents are stored.

As described above, an optimal embodiment has been disclosed in the drawings and specifications. Although specific terms have been used herein, these are only used for the purpose of describing the present invention, and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (14)

1. As a packaging material for eco-friendly mask pack pouch,

   Paper layer; And

   Including a lower film layer disposed under the paper layer,

   The lower film layer is an eco-friendly packaging material for a mask pack pouch, characterized in that biodegradable comprises at least one of a biodegradable resin and an oxo-biodegradable resin.
2. The method of claim 1,

   The packaging material is an eco-friendly packaging material for a mask pack pouch, characterized in that it has an oxygen permeability of 10 cc/(m²·day·atm) or less at 23° C. and 0% relative humidity.
3. The method of claim 1,

   The packaging material is an eco-friendly packaging material for a mask pack pouch, characterized in that it has a moisture permeability of less than 5g / (㎡ · day) at 38 ℃ and 100% relative humidity.
4. The method of claim 1,

   The packaging material has an oxygen permeability of 5 cc/(m²·day·atm) or less at 23°C and 0% relative humidity, and a moisture permeability of 2 g/(m²·day) or less at 38°C and 100% relative humidity. Packaging material for eco-friendly mask pack pouch characterized by.
5. The method of claim 1,

   The lower film layer is an eco-friendly packaging material for a mask pack pouch, characterized in that having a thickness of 15 to 140㎛.
6. The method of claim 1,

   The lower film layer,

   A first lower film layer disposed on a lower surface of the paper layer; And a second lower film layer disposed on a lower surface of the first lower film layer,

   The packaging material for an eco-friendly mask pack pouch, characterized in that the thickness of the first lower film layer is formed to be thinner than that of the second lower film layer.
7. The method of claim 6,

   The first lower film layer and the second lower film layer are eco-friendly packaging material for a mask pack pouch, characterized in that formed of different materials from each other.
8. The method of claim 6,

   The first lower film layer has a thickness of 20 μm or less, and the second lower film layer has a thickness of 15 to 120 μm.
9. The method of claim 1,

   Further comprising an upper film layer disposed on the top of the paper layer,

   The upper film layer is an eco-friendly packaging material for a mask pack pouch, characterized in that biodegradable by including at least one of the biodegradable resin and the oxidative biodegradable resin.
10. The method of claim 9,

    The thickness of the upper film layer is formed to be thinner than the thickness of the lower film layer, the packaging material for eco-friendly mask pack pouch, characterized in that it has a thickness of less than 20㎛.
11. The method of claim 9,

    The packaging material for an eco-friendly mask pack pouch, characterized in that the upper film layer and the lower film layer are formed of different materials.
12. The method of claim 1,

    The biodegradable resin is polylactic acid (PLA) and a copolymer thereof, polycaprolactone (PCL), polyglycolic acid (PGA), polyethersulfone (PES), polybutylene succinate (PBS), polybutylene succinate. Nate-adipate (PBSA), cellulose-based compound, polyhydroxyalkylate (PHA), polybutylene adipate-terephthalate (PBAT), polybutylene succinate-terephthalate (PBST) resin, and mixtures thereof Eco-friendly packaging material for mask pack pouch, characterized in that selected from the group consisting of.
13. The method of claim 1,

    It is disposed between the paper layer and the lower film layer, further comprising an adhesive layer for bonding the paper layer and the lower film layer,

    The adhesive layer is an eco-friendly packaging material for a mask pack pouch, characterized in that formed of the biodegradable resin or the oxidative biodegradable resin.
14. As an eco-friendly mask pack pouch comprising the packaging material of any one of claims 1 to 13,

    The packaging material is stacked up and down, and the lower film layer forms an inner surface of the pouch to contact the mask pack.

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