Composition for eco-friendly ball-type cosmetic container and ball-type cosmetic container comprising same

Abstract

The present invention relates to a composition for a ball-type cosmetic container and a ball-type cosmetic container manufactured using same. The composition for a ball-type cosmetic container is characterized by comprising: a ball-type outer skin part forming a hollow sealed space for filling with a filler; and a discharge port for discharging the filler to a portion of the ball-type outer skin part. The outer skin part includes: an ethylene-based polymer resin; a rubber-based plastic resin; a bio-based polyethylene resin; and a polishing agent. According to the present invention, it is possible to provide a cosmetic container which can provide a beautiful appearance due to having excellent gloss, has excellent elasticity, thus ensuring dischargeability of the contents, and can reduce carbon dioxide and be recycled, thus being eco-friendly.

Description

Composition for an eco-friendly ball-shaped cosmetic container and a ball-shaped cosmetic container comprising the same

[0001] The present invention relates to a composition for an eco-friendly ball-shaped cosmetic container and a ball-shaped cosmetic container comprising the same, and more particularly, to a composition for a ball-shaped cosmetic container and a ball-shaped cosmetic container comprising the same, which can provide an eco-friendly cosmetic container by providing an attractive appearance with excellent gloss, by ensuring excellent elasticity to ensure the dischargeability of contents, by containing bio-based polyethylene to enable reduction of carbon dioxide, and by being recyclable.

[0002] Recently, demand for customized cosmetics tailored to individual tastes, skin characteristics, and makeup types has been increasing. Accordingly, various forms of customized cosmetics are being developed.

[0003] Cosmetics are generally used in various forms, such as skin lotions, emulsions, creams, and face oils, depending on their function. These cosmetics are sold in containers based on their capacity, and the user dispenses only the amount needed.

[0004] These cosmetics are sold to consumers in a variety of containers. For example, cream-type cosmetics are typically sold in containers consisting of a main body containing the cosmetic and a lid covering the main body. The main body and lid typically have symmetrical screw threads and grooves, allowing the user to open and close these containers using a screw-fastening mechanism.

[0005] These cosmetic containers are made using various plastic resin compositions due to their ease of molding during production, and in particular, polyoxymethylene (POM), a plastic resin also known as acetal, polyacetal, or polyformaldehyde, is mainly used to prevent chemical reactions with various chemical ingredients contained in cosmetics.

[0006] However, the body and lid made of polyoxymethylene, etc. have different thermal expansion rates due to differences in shape and added pigment components, etc., and thus, the body and lid undergo dimensional deformation that is different from the original manufacturing dimensions, and due to such dimensional deformation, a slight asymmetry occurs between the screw threads and screw grooves formed on the body and lid, and due to the asymmetry caused by the difference in thermal expansion rates, when the body and lid are screwed together, the screw threads and screw grooves rub against each other, causing severe wear and tear. Furthermore, due to such wear, a considerable amount of plastic powder, which is a byproduct of wear, is generated.

[0007] Meanwhile, suitable containers that can provide customized cosmetics to customers under optimal conditions are also being developed. One such container is a ball-shaped container that holds contents inside and has a discharge port on one side.

[0008] These ball-shaped containers must have sufficient elasticity or softness to allow extraction of the contents.

[0009] These ball-shaped containers contain a copolymer containing an aromatic vinyl monomer and a cyano monomer, which have various properties such as excellent chemical resistance, rigidity, and moldability. However, thermoplastic copolymers containing a cyano monomer as a single component are prone to color deterioration due to the high temperatures during molding processing. Therefore, the actual molded product has low clarity and a dull appearance, i.e., low gloss, which prevents it from providing an attractive appearance. In addition, the high unit price reduces economic feasibility.

[0010] [Prior Art Literature]

[0011] Republic of Korea Patent No. 10-1832793 (published on February 28, 2018)

[0012] Republic of Korea Patent Publication No. 10-2022-0012568 (published on February 4, 2022)

[0013] Republic of Korea Patent Publication No. 10-2023-0058105 (published on May 2, 2023)

[0014] Accordingly, the present invention, which aims to solve the above-mentioned conventional problems, provides a composition for a ball-shaped cosmetic container, which has a high gloss and thus provides an attractive appearance, has excellent elasticity and thus ensures the dischargeability of contents, contains bio-based polyethylene and thus reduces carbon dioxide, and is recyclable, thereby providing an environmentally friendly cosmetic container, and a ball-shaped cosmetic container including the same.

[0015] The problems solved by the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0016] The present invention provides a composition for a ball-type cosmetic container, which comprises a ball-type outer skin forming a hollow, sealed space for filling a filler, and a discharge port formed in a part of the ball-type outer skin for discharging the filler, wherein the outer skin comprises an ethylene-based polymer resin; a rubber-based plastic resin; a bio-based polyethylene resin; and a polishing agent.

[0017] In addition, the present invention provides a ball-type cosmetic container having a ball-type outer skin formed with a hollow, sealed space for filling a filler by manufacturing the composition for the ball-type cosmetic container, and a discharge port formed in a part of the ball-type outer skin for discharging the filler.

[0018] The composition for a ball-shaped cosmetic container according to the present invention and the ball-shaped cosmetic container including the same provide the following effects.

[0019] First, the ball-shaped cosmetic container according to the present invention has excellent elasticity, so that the entire contents can be taken out and used.

[0020] Second, the ball-shaped cosmetic container according to the present invention has high elasticity and excellent gloss, thereby providing an attractive appearance as a cosmetic container.

[0021] Third, the present invention has the effect of providing an environmentally friendly cosmetic container that contains bio-based polyethylene resin, thereby reducing carbon dioxide emissions and being recyclable.

[0022] The effects of the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0023] Figure 1 is a photograph of a ball-shaped cosmetic container having a composition range according to Example 1 of the present invention and a ball-shaped cosmetic container of Comparative Example 2.

[0024] Hereinafter, the present invention will be described in detail.

[0025] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0026] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing the present invention, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the present invention, such detailed description will be omitted.

[0027] Hereinafter, a composition for a ball-shaped cosmetic container according to a preferred embodiment of the present invention and a ball-shaped cosmetic container including the same will be described in detail.

[0028]

[0029] A composition for a ball-type cosmetic container according to the present invention is a composition for a ball-type cosmetic container, which comprises a ball-type outer skin forming a hollow, sealed space for filling a filler, and a discharge port for discharging the filler formed in a part of the ball-type outer skin, wherein the outer skin comprises an ethylene-based polymer resin; a rubber-based plastic resin; a bio-based polyethylene resin; and a polishing agent.

[0030]

[0031] The above filling material may be any type of cosmetic or cosmetic material.

[0032] The above outer skin portion forms a hollow, sealed space by blow molding. Blow molding may be a method of forming a hollow product by inserting a parison, which is pre-formed into a tube shape by extrusion or injection using a heated and melted thermoplastic plastic molding material, into a blow mold, heating and softening it, and then blowing air into the interior.

[0033] The above outer skin must have sufficient elasticity or softness to allow extraction of the cosmetic material as a filler.

[0034] In addition, the outer skin has a high gloss and can provide a beautiful appearance.

[0035] In addition, the outer skin may be environmentally friendly as it contains bio-based polyethylene, reduces carbon dioxide, and is recyclable.

[0036] The thickness of the above outer skin may be 0.5 to 1.0 mm.

[0037] The thickness of the outer skin can be arbitrarily adjusted to provide elasticity that allows the contents to be easily discharged through the outlet of the container.

[0038] The size of the hollow, sealed space formed by the outer skin can be manufactured to a size according to the single-use amount of the cosmetic contents used as the filler. For example, it can be manufactured to a size capable of containing 1 cc to 10 cc.

[0039]

[0040] The above ethylene polymer resin is preferably a polyethylene resin as a base material of the cosmetic container of the present invention, and more preferably may be a low-density polyethylene resin (LDPE).

[0041] The above rubber-based plastic resin is used to provide elasticity and a certain gloss, and may preferably be a polyolefin elastomer resin or a polyolefin plastomer resin.

[0042] The above bio-based polyethylene resin may be low-density bio-based polyethylene (Biobased LDPE) polymerized with plant-derived ethylene.

[0043] The above polishing agent may be a polyethylene-based polishing agent.

[0044] In one embodiment of the present invention, the composition ratio of the ethylene polymer resin, the rubber plastic resin, the bio-based polyethylene resin, and the polishing agent may be 5 wt% to 60 wt%: 9 wt% to 67 wt%: 5 wt% to 60 wt%; 1 wt% to 3 wt% based on the total weight of the composition.

[0045] In one embodiment of the present invention, the ethylene polymer resin, the rubber plastic resin, and the bio-based polyethylene resin are included in a composition ratio of 5 wt% to 60 wt%: 10 wt% to 70 wt%; 5 wt% to 60 wt%, and the polishing agent may be included in an amount of 1 to 3 parts by weight based on 100 parts by weight of the ethylene polymer resin, the rubber plastic resin, and the bio-based polyethylene resin.

[0046] Since the composition of the present invention is composed of a single polyethylene material, recycling of the cosmetic container of the present invention can be enabled.

[0047] In addition, the present invention can reduce carbon dioxide emissions by replacing existing petrochemical-derived materials by applying bio-based polyethylene resin.

[0048]

[0049] In addition, the present invention relates to a ball-type cosmetic container, which is manufactured using the composition for the ball-type cosmetic container and has a ball-type outer skin portion forming a hollow, sealed space for filling a filler, and a discharge port for discharging the filler can be formed in a portion of the ball-type outer skin portion.

[0050] A ball-shaped cosmetic container made of a composition for a ball-shaped cosmetic container according to the present invention has a density of 0.80 g / cm in terms of physical properties. 3 ∼0.95 g / cm 3 , preferably 0.90 g / cm 3 And, the melting point (DSC) is 50℃∼120℃, preferably 80∼100℃, and the melting flow index (Melt Flow Index (190℃ / 2.16kg) is 0.1 g / 10min∼2 g / 10min, preferably 0.7g / 10min∼0.9 g / 10min.

[0051] A ball-shaped cosmetic container made of a composition for a ball-shaped cosmetic container according to the present invention has, in terms of mechanical properties, a tensile strength of 4 MPa to 6.5 MPa, preferably 5.5 MPa, an elongation of 600% or more, preferably more than 900% and less than 1200%, and a flexural modulus of 11 MPa to 15 MPa, preferably 13. Here, the hardness (using a Shore and IRHD (International Rubber Hardness) hardness tester) is 50 to 80, preferably 70.

[0052] The ball-shaped cosmetic container according to the present invention can be manufactured using the composition for the ball-shaped cosmetic container described above and satisfy the above physical properties and / or mechanical properties.

[0053] Hereinafter, the present invention will be described in more detail through specific examples and comparative examples.

[0054]

[0055] <Examples 1 to 5 and Comparative Examples 1 to 4>

[0056] LDPE, POE, and polyethylene-based polish were mixed in a mixer according to the composition ratios shown in Table 1 below, and then placed in an extruder to produce pellets through a heating, melting, and cooling process.

[0057] The above pellets were heated and melted, and the parison pre-formed into a tube shape by extrusion or injection was inserted into a blow molding mold, heated and softened, and then air was blown inside to manufacture a ball-shaped cosmetic container.

[0058]

[0059] <Experimental Example 1> Physical property evaluation

[0060] The physical properties of the specimens manufactured in the examples and comparative examples were evaluated using the following methods.

[0061] Density (g / cm3): The density (g / cm3) of the specimen was measured using the ASTM D792 method, and the results are shown in Table 1 below.

[0062] Melting point (℃) and melting index (190℃, 2.16kg): The melting point (℃) and melting index (190℃, 2.16kg) were measured for the specimens using the ASTM D1238 method, and the results are shown in Table 1 below.

[0063] Tensile strength and elongation: Tensile strength (kgf / ㎠) and elongation (%) were measured for the specimens using the ASTM D638 method, and the results are shown in Table 1 below.

[0064] Flexural modulus: The flexural modulus was measured for the specimens using the ASTM D790 method, and the results are shown in Table 1 below.

[0065] Hardness: The hardness of the specimens was measured using a shore A or D durometer and is shown in Table 1 below.

[0066] Composition (LDPE:POE:Bio PE:Additive) Density (g / cm) 3 ) Melting point (℃) Melting index (g / 10min) Tensile strength (Mpa) Elongation (%) Flexural modulus (Mpa) Hardness Comparative example 1 25:68:5:20.88 68 2.13.6 > 600 1848 Comparative example 2 15:35:50:00.90 90 0.85.4 > 600 1369 Comparative example 3 60:33:5:20.90 90 0.75.5 > 600 1370 Comparative example 4 40:8:50:20.91 10 20.66.8 > 6 001078 Example 1 15:33:50:20.90910.85.5>6001370 Example 2 5:33:60:20.90910.95.4>6001369 Example 3 10:58:30:20.88721.74.8>6001558 Example 4 20:48:30:20.89831.25.2>6001461 Example 5 30:18:50:20.91970.66.1>6001273

[0067] LDPE: MFR (190℃, 2.16kg) 0.1~1.0g / 10min, density 0.920~0.923g / cm 3Products from LG Chemical, DOW Chemical, and Lotte Chemical

[0068] POE: MFR (190℃, 2.16kg) 1.0~5.0g / 10min, density 0.870g / cm 3 Products from LG Chemical, DOW Chemical, and SK Geocentric

[0069] Bio-PE: MFR (190℃, 2.16kg) 0.1~1.0g / 10min, density 0.920~0.923g / cm 3 Products from Braskem and LyondellBasell

[0070] Additive: Polyethylene-based polish, MFR (190℃, 2.16kg) 5.0~16.0g / 10min, density 0.900~0.960g / cm 3 Products from 3M, Arkema, and Mantec

[0071] As described above, the ball-shaped cosmetic container according to Example 1 exhibited excellent strength and sufficient elasticity, whereas the ball-shaped cosmetic container according to Comparative Example 1 had insufficient strength and excessive elasticity, resulting in poor ejection properties.

[0072] Figure 1 is a photograph of a ball-shaped cosmetic container having a composition range according to Example 1 of the present invention and a ball-shaped cosmetic container of Comparative Example 2. It can be seen that the ball-shaped cosmetic container of Example 1 has excellent gloss and can provide an attractive appearance, but the ball-shaped cosmetic container of Comparative Example 2 has low gloss and thus an unattractive appearance.

[0073] According to the composition for a ball-shaped cosmetic container according to the present invention as described above and the ball-shaped cosmetic container including the same, there are advantages in that the composition has excellent elasticity so that all of the contents can be taken out and used, and further, it has high elasticity and excellent gloss so that it can provide a beautiful appearance as a cosmetic container, and it can be recycled so that it can provide an environmentally friendly cosmetic container.

[0074] The embodiments described in this specification and the attached drawings are merely illustrative of some of the technical concepts encompassed by the present invention. Therefore, the embodiments disclosed in this specification are intended to illustrate, rather than limit, the technical concepts of the present invention. Therefore, it is self-evident that the scope of the technical concepts of the present invention is not limited by these embodiments. All modifications and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical concepts contained in the specification and drawings of the present invention should be construed as being included within the scope of the rights of the present invention.

Claims

1. A composition for a ball-type cosmetic container having a ball-type outer skin that forms a hollow, sealed space for filling a filler, and a discharge port that can be formed in a part of the ball-type outer skin for discharging the filler. A composition for a ball-shaped cosmetic container, characterized in that the outer skin comprises an ethylene-based polymer resin; a rubber-based plastic resin; a bio-based polyethylene resin; and a polishing agent.

2. In paragraph 1, The above ethylene polymer resin is a low-density polyethylene (LDPE) resin, The above rubber-based plastic resin is a polyolefin elastomer resin or a polyolefin plastomer resin. The above bio-based polyethylene resin is a low-density bio-based polyethylene resin polymerized with plant-derived ethylene. The above polish is a polyethylene-based polish. Composition for a ball-shaped cosmetic container.

3. In paragraph 1 or 2, A composition for a ball-shaped cosmetic container, wherein the composition ratios of the ethylene polymer resin, rubber-based plastic resin, bio-based polyethylene resin, and polishing agent are 5 wt% to 60 wt%: 9 wt% to 67 wt%: 5 wt% to 60 wt%; 1 wt% to 3 wt%, based on the total weight of the composition.

4. In paragraph 1 or 2, The above ethylene polymer resin, rubber plastic resin and bio-based polyethylene resin are included in a composition ratio of 5 wt% to 60 wt%: 10 wt% to 70 wt%; 5 wt% to 60 wt%, The above-mentioned polishing agent is included in an amount of 1 to 3 parts by weight per 100 parts by weight of the ethylene-based polymer resin, rubber-based plastic resin, and bio-based polyethylene resin. Composition for a ball-shaped cosmetic container.

5. A ball-type cosmetic container manufactured using a composition for a ball-type cosmetic container according to any one of claims 1 to 4, which has a ball-type outer skin portion forming a hollow, sealed space for filling a filler, and a discharge port for discharging the filler formed in a portion of the ball-type outer skin portion.

6. In paragraph 5, Density is 0.80 g / cm 3 ∼0.95 g / cm 3 A ball type cosmetic container having a melting point of 50℃∼120℃ and a melting flow index (190℃ / 2.16kg) of 0.1 g / 10min∼2 g / 10min.

7. In paragraph 5, A ball-type cosmetic container having a tensile strength of 4 MPa to 6.5 MPa, an elongation of 600% or more, a flexural modulus of 11 MPa to 15 MPa, and a hardness of 50 to 80.

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