KR102555720B1 - Silicone brush and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to a silicone brush and a manufacturing method thereof, and more specifically, by using eco-friendly silicon, generation of toxic gases or harmful substances is minimized during the manufacturing process, and a film film is formed by manufacturing the brush with different hardness from the outside and inside. It relates to a silicone brush that does not cause pain when applying cosmetics and the like to the skin using a brush and a method for manufacturing the same, which is manufactured to have a hardness most similar to human skin and improve application properties without being applied.

Description

Silicone brush and method for manufacturing thereof {Silicone brush and method for manufacturing thereof}

The present invention relates to a silicone brush and a method for manufacturing the same, and more specifically, to minimize the generation of toxic gases or harmful substances during the manufacturing process by using eco-friendly silicone, and to add an embossed pattern without forming a film on the surface of the brush to improve the quality of cosmetics. A silicon brush that can make up softly without pain when applying cosmetics to the skin using a brush by making the hardness of the outside and inside of the puff different to improve the application and to have the hardness most similar to human skin, and its manufacturing method will be.

In general, when trying to use a cosmetic contained in a cosmetic container, it is spread on the skin of the area where the cosmetic is to be applied in a state in which the cosmetic is evenly spread on the palm in a state in which it is taken out in the palm of the hand. In this way, when the cosmetic liquid is applied to the palm of the hand, it is not easy to properly discharge and use the amount of cosmetic liquid used, and the cosmetic liquid is buried in the palm of the hand, causing a problem of unnecessary waste.

Accordingly, a makeup tool is used, and a puff and a makeup brush are examples of the makeup tools that are mainly used.

In this cosmetic tool, in a state in which the lid is removed from the opening of the cosmetic container in which cosmetics are accommodated, a puff or makeup brush, which is a makeup tool, is moved to the opening, the cosmetic container is turned upside down, the cosmetics are discharged and buried, and then the cosmetics are buried. Apply to the skin by rubbing or patting the cosmetic tool against the skin.

Although these existing cosmetic brushes have the advantage of being convenient to use, there is a problem in that unnecessary cosmetics are wasted as the cosmetic liquid is excessively absorbed by most of the sponge-type brushes. Furthermore, as the cosmetic liquid absorbed in the sponge is concentrated and applied to one part of the skin when the brush is touched to the skin, there is a problem in that the cosmetic liquid is not applied evenly and clumps in one part. In this case, the cosmetics as described above have a certain viscosity, so there is a problem that they are smeared on clothes or scarves.

In addition, in the case of eye makeup powder type eyeshadow or blusher, a hair brush is used, but in the case of hair, bacteria may propagate, which is not good for hygiene. In particular, in the case of hair brushes, brushes using animal hair sold under the name of natural hair in order to emphasize premium have a problem of harming animals, such as killing animals to acquire hair.

Therefore, in order to overcome the above-mentioned problems, the present inventors recognized that it was urgent to develop a brush capable of reducing the consumption of unnecessary cosmetics and reducing the propagation of bacteria, and completed the present invention.

Republic of Korea Patent Registration No. 10-1217864

An object of the present invention is to use eco-friendly silicone to minimize the generation of toxic gases or harmful substances in the manufacturing process, and to improve skin trouble caused by harmful substances in the brush, a silicone brush having a double hardness and a method for manufacturing the same is to provide

Another object of the present invention is to improve the applicability of cosmetics by adding an embossed pattern without forming a film film on the surface of the brush, and to make cosmetics with different hardness from the outside and inside to have the most similar hardness to human skin, so that cosmetics can be applied using a brush. When applied to the skin, it is possible to apply makeup smoothly without pain, and thereby to provide a silicone brush having a double hardness and a method of manufacturing the same, which has an effect similar to that of applying cosmetics by hand.

Another object of the present invention is a silicone brush that is hygienic compared to conventional hair brushes and, in particular, can replace animal hair sold as natural hair, thereby exhibiting an effect on animal protection, and It is to provide a manufacturing method thereof.

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

In order to achieve the above object, the present invention provides a silicone brush having double hardness and a manufacturing method thereof.

Hereinafter, this specification will be described in more detail.

The present invention includes a brush unit comprising a first silicone and a second silicone; It provides a silicon brush comprising a; and a handle portion supporting the brush portion.

In the present invention, the brush portion is provided with an inner space, the external brush portion including a first silicone having a viscosity of 1000 to 3000 mPa·s; and an inner brush portion located in the inner space of the outer brush portion and filled with second silicon composed of second silicon A and second silicon B.

In the present invention, the second silicon is characterized in that it is a mixture of second silicon A and second silicon B.

In the present invention, the second silicon A is 10 to 20% by weight of a reactant of silica and hexamethyldisilazane; 50 to 60% by weight of vinyl/STPDpolydimethylsiloxane; And polydimethylsiloxane (Polydimethylsiloxane) 30 to 40% by weight; characterized in that.

In the present invention, the second silicon B is 10 to 20% by weight of silica and hexamethyldisilazane reactant; 0.3 to 1% by weight of octamethylcyclotetrasiloxane; 50 to 60% by weight of vinyl/STPD polydimethylsiloxane; 20 to 30% by weight of polydimethylsiloxane; 1 to 10% by weight of hydrogen dimethicone; And 1 to 10% by weight of a mixture of methylhydroxysiloxane and dimethylsiloxane copolymer.

In the present invention, when the brush part is measured according to ASTM D 2240 Shore A, the external brush part has a hardness of 0 to 1 Shore A, and the internal brush part has a hardness of 4 to 6 Shore A.

In addition, the present invention provides a method for manufacturing a silicon brush comprising the following steps.

(S1) forming an internal brush portion by adding a second silicon into the first mold;

(S2) forming a brush part by adding first silicone and the internal brush part to a second mold; and

(S3) manufacturing a silicon brush by demolding the brush part.

In the present invention, the surface of the second mold is characterized in that it is embossed (ambo) pattern treatment to improve the application of cosmetics.

All matters mentioned in the above silicone brush and its manufacturing method apply equally unless contradictory.

The silicone brush and its manufacturing method of the present invention use eco-friendly silicon to minimize the generation of toxic gases or harmful substances during the manufacturing process, and can improve skin trouble caused by harmful substances in the brush.

In addition, the silicone brush and its manufacturing method of the present invention prevent stickiness because a film film is not formed by manufacturing the brush with different hardness from the outside and the inside, and it is manufactured to have the most similar hardness to human skin, so that cosmetics can be applied using the brush. When applied to the skin, it is possible to apply makeup smoothly without pain and improve skin applicability, thereby having an effect similar to applying cosmetics by hand.

In addition, the silicone brush and its manufacturing method of the present invention are hygienic compared to conventional hair brushes, and in particular, can replace animal hair sold as natural hair, which is effective in animal protection. can

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

1 is a perspective view of a silicone brush according to a first preferred embodiment of the present invention.
2 is a perspective view of an embossed silicon brush according to a first preferred embodiment of the present invention.
3 is a perspective view of a silicone brush according to a second preferred embodiment of the present invention.
4 is a perspective view of a silicon brush according to a third preferred embodiment of the present invention.
5 is a configuration diagram showing a step-by-step method for manufacturing a silicon brush according to the present invention.

The terms used in this specification have been selected from general terms that are currently widely used as much as possible while considering the functions in the present invention, but these may vary depending on the intention of a person skilled in the art, precedent, or the emergence of new technologies. In addition, in a specific case, there is also a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, not simply the name of the term.

Unless defined otherwise, 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

Numerical ranges are inclusive of the values defined therein. Every maximum numerical limitation given throughout this specification includes every lower numerical limitation, as if such lower numerical limitations were expressly written. Every minimum numerical limitation given throughout this specification includes every higher numerical limitation, as if such higher numerical limitations were expressly written. Every numerical limitation given throughout this specification will include every better numerical range within the broader numerical range, as if the narrower numerical limitations were expressly written.

Hereinafter, embodiments of the present invention will be described in detail, but it is obvious that the present invention is not limited by the following examples.

silicone brush

Example 1

The present invention includes a brush unit 100 including first silicon and second silicon; and a handle portion 200 supporting the brush portion 100.

More specifically, as shown in FIGS. 1 and 2 , the silicon brush 1 may have a pointed top and a waterdrop shape in cross section.

As shown in Figures 1 and 2, the silicone brush 1 is provided with an inner space, the outer brush portion 110 containing a first silicone having a viscosity of 1000 to 3000 mPa s; and an internal brush unit 120 located in the inner space of the external brush unit 110 and filled with second silicon composed of second silicon A and second silicon B; there is.

The external brush portion 110 may be formed smoothly, or an embo pattern may be added to improve application of cosmetics, and the embo pattern may be a pattern similar to a human fingerprint.

The external brush part 110 forms the appearance of the silicone brush 1 in contact with the user's skin, and may be formed of first silicone. The first silicone may be silicone having a viscosity of 1000 to 3000 mPa·s (based on 25 ℃). In addition, when the first silicone is cured at 25 ° C. for 3 to 4 hours, it has a specific gravity of 1.0 to 1.5 (25 ° C.), has a tensile strength of 1.5 to 5 MPa, and has a tensile strength of 500 to 5 MPa. It has an elongation of 800% and may have a tear strength of 4 to 8 kN/m.

The external brush unit 110 may be implemented in various colors by adding a pigment to the first silicone, and preferably, the pigment may be a color pigment, Zion pigment, or a mixture thereof. In addition, a color additive may be additionally included to prevent color change realized by the addition of the pigment, and the color additive may be an organic acid such as malic acid, malic acid, citric acid, maleic acid, acetic acid, succinic acid, or fumaric acid.

The inner brush part 120 may be formed by being inserted into the handle part 200 . More specifically, the inner brush part 120 may be inserted and fixed to the upper portion of the handle part 200 by a preset length. As the inner brush part 120 is inserted into the handle part 200, additional adhesive may not be used.

The inner brush part 120 may be formed of second silicon, and the second silicon may be a mixture of second silicon A and second silicon B. The second silicone A and the second silicone B may have a viscosity (dynamic viscosity) of 3 to 8 Pa·s and a specific gravity of 1.0 to 1.5.

More specifically, the second silicon A is 10 to 20% by weight of a reactant of silica and hexamethyldisilazane; 50 to 60% by weight of vinyl/STPDpolydimethylsiloxane; And polydimethylsiloxane (Polydimethylsiloxane) 30 to 40% by weight; may be composed of.

In addition, the second silicon B is 10 to 20% by weight of silica and hexamethyldisilazane reactant; 0.3 to 1% by weight of octamethylcyclotetrasiloxane; 50 to 60% by weight of vinyl/STPD polydimethylsiloxane; 20 to 30% by weight of polydimethylsiloxane; 1 to 10% by weight of hydrogen dimethicone; And 1 to 10% by weight of a mixture of methylhydroxysiloxane and dimethylsiloxane copolymer.

The silica and hexamethyldisilazane reactants are CAS No. 68909-20-6, and the vinyl/STPD polydimethylsiloxane is CAS No. 68083-19-2, and the polydimethylsiloxane is CAS No. 63148-62-9. In addition, the octamethylcyclotetrasiloxane has CAS No. 556-67-2, and the hydrogen dimethicone CAS No. 70900-21-9, and the mixture of methylhydroxysiloxane and dimethylsiloxane copolymer may be CAS No.68037-59-2.

The silicon brush (1) is 30 to 40% by weight of the first silicone of the total weight% of the brush unit; and 60 to 70% by weight of the second silicon.

When using the silicone brush 1, a temperature control additive for a temperature control function according to the season may be additionally included, and the temperature control additive may be paraffin wax.

The silicone brush 1 may add a natural antibacterial agent to improve the antibacterial effect. Preferably, the antibacterial agent is silver nanoparticles, silver powder, zinc nanoparticles, zinc powder, herbal extract, or aromatic oil. At least one selected from the group consisting of phytoncide, evening primrose extract, pine needle powder, juniper leaf extract, and leatherback tree leaf extract may be individually added or dispersed in the first silicone or the second silicone to impart an antibacterial function.

In addition, the natural antibacterial agent can be mixed with a sodium-based compound to supplement the function of removing bacteria, residual environmentally harmful substances and odors. The sodium-based compound is sodium hydrogensulfite (NaHSO ₃ ), sodium percarbonate (2Na ₂ CO ₃ or 2Na ₂ CO ₃ 3H ₂ O ₂ ), sodium bicarbonate (NaHCO ₃ ), sodium chloride (NaCl), sodium metasilicate (Na ₂ SiO ₃ ), sodium tetraborate (Na ₂ B ₄ O ₇ ), borax (Na ₂ B ₄ O ₇ .10H ₂ O) and soda ash (Soda ash; Na ₂ CO ₃ ) It may be one or more selected from the group consisting of.

The silicon brush 1 may additionally include a processing material. More specifically, the processing aid may be added to maintain uniform physical properties by being individually added or dispersed in the first silicon or the second silicon to increase the dispersion force of the first silicon or the second silicon. The processing aid may be an aqueous processing aid or a non-aqueous processing aid.

When the silicone brush 1 is measured according to ASTM D 2240 Shore A, the external brush portion 110 may have a hardness of 0 to 1 Shore A, and the internal brush portion 120 may have a hardness of 4 to 6 Shore A. . That is, the external brush portion 110 has a relatively low hardness compared to the internal brush portion 120, so that a soft touch can be imparted.

In the silicon brush 1, the difference in hardness between the outer brush portion 110 and the inner brush portion 120 is a hardness difference similar to that of a human hand, and has a hardness most similar to that of human skin, so that the silicon brush When cosmetics are applied to the skin using (1), pain may not occur. In addition, since the external brush portion 110 has a lower hardness than the internal brush portion 120, application of cosmetics can be further improved.

Since the silicone brush 1 according to the present invention contains only silicon as a component, it is more hygienic than a brush formed of hair and can reduce the generation of bacteria.

Second embodiment

As another embodiment according to the present invention, in the configuration of the first embodiment, the silicon brush 1 may have a circular shape as shown in FIG.

Third embodiment

As another embodiment according to the present invention, in the configuration of the first embodiment, the silicon brush 1 may form a square shape as shown in FIG.

Manufacturing method of silicone brush

The present invention provides a method for manufacturing a silicon brush comprising the following steps.

(S1) manufacturing an internal brush part by adding a second silicon to the first mold;

(S2) forming a brush part by adding first silicone and the internal brush part to a second mold; and

(S3) manufacturing a silicon brush by demolding the brush part.

The silicone brush is the same as previously mentioned in the silicone brush.

As shown in FIG. 5(a), in the step (S1), the second silicon is injected into the first mold formed in an array, and the second silicon injected into the first mold is molded at 110 to 140 ° C. Thus, the inner brush portion may be molded and manufactured.

The second silicon may be included in 30 to 40% by weight of the total weight% of the brush part.

The inner brush portion may be manufactured in an array-shaped first mold, applied to a step (sS2) to be described later, or may be cut into a preset length and applied.

As shown in FIG. 5(b), the step (S2) is a step of molding the entire shape of the brush part, by first injecting the first silicone into the second mold, and adding the molded inner brush part. After that, the first silicone may be injected secondarily, and at this time, it may be molded in a temperature range of 100 to 120 ° C.

In the first injection, the first silicone is injected at 10 to 20% by weight of the total weight of the brush part, and in the second injection, the first silicone is injected at 40 to 60% by weight of the total weight% of the brush part. can

A pigment, a color additive, a temperature control additive, an antibacterial agent, a sodium-based compound, or a processing aid may be additionally injected into the first silicone or the second silicone added or injected in the steps (S1) and (S2).

In the manufacturing method of the silicon brush, forming a handle part on the lower surface of the brush part; may additionally include.

The handle part is configured to support the brush part composed of the outer brush part and the inner brush part, and the inner brush part may be inserted into and connected to the handle part to support the brush part.

The handle portion may be formed of at least one selected from the group consisting of monovalent to trivalent metals, plastics, wood, and aluminum.

The monovalent to trivalent metal may be at least one metal selected from the group consisting of sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), and aluminum (Al).

From the above description, those skilled in the art pertaining to the present invention will be able to understand that the present invention can be implemented in other specific forms without changing its technical spirit or essential features. In this regard, the embodiments described above are illustrative in all respects and should be understood as non-limiting.

Silicone brush: 1
Brush part: 100
External brush part : 110
Internal brush part: 120
Handle part: 200

Claims (6)

a brush unit including first silicon and second silicon; and
It includes; a handle portion supporting the brush portion;
The brush part
An external brush portion including a first silicone having an internal space and having a viscosity of 1000 to 3000 mPa·s; and
An inner brush portion located in the inner space of the outer brush portion and filled with second silicon composed of second silicon A and second silicon B;
When measuring the brush part according to ASTM D 2240 Shore A,
The external brush portion has a hardness of 0 to 1 Shore A,
The inner brush portion is a silicone brush having a hardness of 4 to 6 Shore A.
delete According to claim 1,
The second silicon A is 10 to 20% by weight of a reactant of silica and hexamethyldisilazane; 50 to 60% by weight of vinyl/STPDpolydimethylsiloxane; And polydimethylsiloxane (Polydimethylsiloxane) 30 to 40% by weight; and,
The second silicon B is 10 to 20% by weight of silica and hexamethyldisilazane reactant; 0.3 to 1% by weight of octamethylcyclotetrasiloxane; 50 to 60% by weight of vinyl/STPD polydimethylsiloxane; 20 to 30% by weight of polydimethylsiloxane; 1 to 10% by weight of hydrogen dimethicone; and 1 to 10% by weight of a mixture of methylhydroxysiloxane and dimethylsiloxane copolymer. delete delete delete

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