JP7441598B2 - applicator - Google Patents

Description

TECHNICAL FIELD The present invention relates to an applicator for applying a coating liquid such as a cosmetic liquid containing bulk pigment deposits and the like.

Conventionally, the collector-type applicator is a well-known technology, but due to the diversity of the market, we have proposed a slender applicator due to the emphasis on portability and design (Japanese Patent Laid-Open No. 2015-2984: Patent Document 1 ).

On the other hand, in conventional collector-type applicators, not only thin shafts but also thick shafts are sometimes preferred for design reasons. Further, in order to prevent the color of the coating liquid from being seen, it is necessary to cover the storage portion with the rear shaft so that the coating liquid cannot be seen from the outside, thereby improving the quality of the appearance. In other words, it is possible to create a design that is optimized for printing, etc. by making the outer axis for decoration independent.

In the above-mentioned conventional applicator, a stirring body such as a stirring ball is placed in the storage space for the application liquid in order to cope with pigment sedimentation in the bulk of the application liquid and cosmetic liquid.

Further, as the agitating body of the applicator, in addition to the ball shape, rod-shaped and cylindrical shapes have been proposed (Japanese Utility Model Publication No. 6-19874: Patent Document 2).

The stirring body needs to have sufficient clearance with the inner diameter of the housing so that it does not block the movement of liquid and air within the housing when it is shaken.

JP 2015-2984 Publication Utility Model Publication No. 06-19874

However, if the shaft cylinder is a thin-shaft model or has a double structure in which the top of the housing part is covered with an outer shaft, the balls of the stirring body become smaller and the stirring effect becomes weaker. In addition, there was a problem in that the balls were likely to be buried in cakes such as precipitated pigments, resulting in malfunction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an applicator that allows the weight of the agitator to be easily increased even if the accommodating portion has a thin shaft, and that can agitate more thoroughly than a ball.

The present invention provides an applicator in which a coating liquid containing solids is accommodated in a housing part in a barrel.
A stirring body is provided in the housing part,
The stirring body has an outer diameter of 40 to 60% of the inner diameter of the housing part, a length of the stirring body of 10 to 50% of the length of the housing part, and a weight of the stirring body of 0.2g to 1.0g. This applicator is characterized by being made of a material that does not contain formaldehyde.

In the present invention, it is preferable that the applicator is provided with an air displacement mechanism behind the application section, and that a shielding plate is provided between the air displacement mechanism and the storage section.
Further, in the present invention, it is preferable that the cosmetic liquid as the coating liquid contains water, a water-soluble organic solvent, a film forming agent, a coloring material, and a preservative as main components.

According to the present invention, a stirring body is provided in the housing, the outer diameter of the stirring body is 40 to 60% of the inner diameter of the housing, and the length of the stirring body is 10 to 50% of the length of the housing. The weight is 0.2g to 1.0g and is made of formaldehyde-free material. Since the outer diameter and length of the agitator are defined as above, the agitator can be long enough to be accommodated in the container, and even if the diameter is small and does not block the movement of liquid and air in the container, the weight can be reduced depending on the length. can be increased.

Therefore, it is easier to make the product shaft thinner or have a double structure than with a stirring ball. On the other hand, when a thin stirring rod is stored horizontally, it has a large surface area that buries or comes in contact with the cake of sediment, so it needs to be heavier than a ball in order to ensure its ability to stir when shaken. If the stirring body is long, it can be made to have an appropriate weight.

Note that the stirring body is preferably made of a material that does not contain formaldehyde. Materials that do not contain formaldehyde refer to materials that contain less than 500 ppm, preferably less than 200 ppm of free formaldehyde based on the total weight of the stirring body, such as metals such as stainless steel, non-ferrous metals such as aluminum, acetal, and phenol. , synthetic resins such as polypropylene substantially free of urea and melamine, viscoelastic materials such as olefin elastomers and silicone rubber, and mixed materials of metal powder and synthetic resins. Note that the formaldehyde content is measured according to the VDA275 test method. Furthermore, the shielding plate can reduce the influence on the air displacement mechanism caused by shaking the agitator.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of an applicator according to a first embodiment of the present invention, in which (a) is an overall side view and (b) is an overall longitudinal sectional view. FIG. 2 is an explanatory view of the same applicator with the cap removed, in which (a) is an overall side view and (b) is an overall vertical sectional view. FIG. 7 is a perspective view of an agitation body attached to an applicator according to a second embodiment. It is explanatory drawing of the stirring body attached to the cosmetic applicator concerning 3rd Embodiment, Comprising: (a) is a side view, (b) is a perspective view.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall explanatory view of an applicator according to a first embodiment of the present invention, and FIG. 2 is an explanatory view of the applicator with the cap removed.

As shown in FIGS. 1 and 2, the applicator according to the first embodiment is a cosmetic applicator, and has a structure in which a tip shaft 10 and an outer shaft 12 fit into the outer periphery of the tip shaft 10 on the rear side. A comb-shaped collector 16 having a plurality of leaf portions arranged in the axial direction is disposed within the tip shaft 10 .

Further, a housing portion (corresponding to “accommodation portion”) 14 is housed within the outer shaft 12 as an inner shaft. The accommodating part 1a is fitted into the rear part of the tip shaft 10, communicates with the rear part of the collector 16, and is disposed at the rear part of the accommodating part 14. The accommodating portion 14 in which the application liquid is accommodated has a double tube structure separate from the outer shaft 12, and is a collector type cosmetic applicator.

[Outer shaft 12]
The outer shaft 12 has a closed rear end, and a housing portion 14 is disposed in an inner space of the outer shaft 12 sandwiched between the closed tail end and the rear end of the collector 16.

[Accommodation section 14]
The housing portion 14 directly stores the coating liquid without disposing an impregnated body such as batting (direct liquid type), and an agitator 14a for stirring the coating liquid is disposed. There is.

[Front shaft 10]
An applicator 18 protrudes from the tip of the tip shaft 10, and a guide core in the collector passes through it.

The front shaft 10, the outer shaft 12, the accommodating portion 14, the collector 16, the cap 20, etc. can be made of resin molded products. Moreover, a cylindrical material such as metal or resin can be used for the stirring body 14a. The stirring body 14a is accommodated in the accommodation space 14b within the accommodation section 14.

The collector 16 has a structure that is covered and held by the front shaft 10 and the outer shaft 12.

[Applying body 18]
An applicator body 18 consisting of a tapered brush body protrudes from the opening at the front end of the tip shaft 10, and a cap 20 that covers the applicator body 18 is removably fitted onto the tip shaft 10. It has a structure that allows The tip shaft 10 has a substantially conical side surface shape and is tapered, and it is desirable that the tip angle of the tip shaft 10 be approximately the same as the tip angle of the applicator 18.

The application body 18 is a tapered brush made of resin fibers, natural fiber bundles, and a porous resin body. The rear end of the applicator 18 has an enlarged diameter in the form of a flange, and this enlarged diameter portion engages within the tip shaft 10 and is prevented from coming off. The applicator 18 is preferably a brush, but various other applicators for applying the coating liquid can be used.

[Cap 20]
Inside the cap 20, a cup-shaped inner cap 20a that covers the application body 18 is arranged so as to be movable back and forth in order to improve the airtightness of the application body 18, and a spring 20b is arranged that biases the inner cap 20a rearward.

[Collector 16, core 22]
A bellows-shaped collector 16 is disposed inside the hollow, tapered tip shaft 10 behind the applicator 18, and a core 22 is disposed to pass through the hollow portion 16d of the collector 16. has been done. The core 22 can be composed of a capillary member such as a resin fiber bundle, a natural fiber bundle, or a resin porous body.

In the core 22, the core 22 does not protrude from the rear end of the collector 16 into the housing space 14b in the housing portion 14 (see FIGS. 1 and 2). The rear end surface of the center core 22 substantially coincides with the rear end surface of the collector 16. By aligning the cores 22, the rear ends of the cores 22 do not protrude into the housing space 14b, and the volume within the housing space 14b can be secured. In addition, since the rear end of the core 22 does not protrude into the housing space 14b, when the stirring body 14a is provided in the housing space 14b, even if the stirring body 14a moves within the housing space 14b, the rear end of the core 22 does not protrude into the housing space 14b. Since there is no collision and the core 22 is not deformed, the coating liquid can be sufficiently penetrated.

The front end of the front shaft 10 has a tapered outer peripheral surface, and a flange 10a for positioning the cap 20 when the cap 20 is fitted is formed protruding in the outer radial direction at the center. A protrusion 10b2 for fitting the outer shaft 12 is formed at the rear of the portion 10b1. Further, in front of the protrusion 10b1 of the front shaft 10, an air exchange hole 10c is formed to penetrate the circumferential surface from inside to outside.

A bowl-shaped portion 16a is formed at the front end of the collector 16 in the axial direction. Further, in the collector 16, a front temporary storage section 16b and a rear temporary storage section 16c, in which a plurality of comb-like fins are arranged with gaps, are formed from the front to the center in the axial direction.

Further, a core 22 is provided inside the collector 16, but in the embodiment, a wall is formed near the axial center of the collector 16, and a hollow portion 16d is formed in the wall, passing through the center of the wall. has been done. A sheet body formed in a plurality of thin plates has fins for temporarily storing the coating liquid (front temporary storage part 16b and rear temporary storage part 16c) extending in the outer radial direction on the outer periphery of the wall forming the hollow part 16d. It is. A through hole is formed in the wall portion from the outer periphery to the inner periphery of the hollow portion 16d along the radial direction to allow the coating liquid to flow between the hollow portion 16d and the gap between the fins.

Further, in the collector 16, from the front temporary storage section 16b to the rear temporary storage section 16c, the above-mentioned ink vertical groove (slit) for guiding the coating liquid into the fin gap is exposed at the rear end ( is formed so as to be exposed within the housing space 14a of the housing section 14. Moreover, a thick support wall 24 that abuts the inner surface of the tip shaft 10 is appropriately partitioned between the plurality of fins of the front temporary storage section 16b and the rear temporary storage section 16c.

Specifically, the number of fins in the front temporary storage section 16b and the rear temporary storage section 16c is 40 to 60 in total, of which the front temporary storage section 16b has a ratio of 75 to 85%, and the rear temporary storage section 16b has a ratio of 75 to 85%. The ratio of the portion 16c is set to be 15% to 25%. The spacing between the fins can be 0.15 to 0.3 mm.

Further, the amount that can be accommodated in the accommodation space 14b is 0.7 (ml). The outer diameter of the accommodating portion 14 can be 8.5 (mm), and the diameter of the collector 16 can be 6.0 (mm).

The front temporary storage portion 16b is formed to have the same diameter as the bowl-shaped portion 16a, and is fitted into the front shaft 10. Further, the rear temporary storage section 16c is formed to have a larger outer diameter than the front temporary storage section 16b, and is arranged adjacent to the inner wall surface of the tip shaft 10, as shown in FIG. .

In the cosmetic applicator of the embodiment, a stirring body 14a is provided in the housing space 14b of the housing section 14.

It has a double structure with the inner diameter of the housing portion 14 being 4.5 (mm) and the outer diameter of the outer shaft 12 (10 mm). The double structure allows the outer shaft 12 for decoration to be made independent, allowing for a design optimized for printing, etc.

The agitating body 14a has a cylindrical shape, and its outer diameter is 40 to 60% of the inner diameter of the accommodating part 14 (accommodating space 14b), and the length of the agitating body 14a is equal to the length of the accommodating part 14 (accommodating space 14b). 10 to 50%, the weight of the stirring body is 0.2 g to 1.0 g, and is preferably made of stainless steel. Further, the specific gravity of the stirring body 14a is higher than the specific gravity of the cosmetic liquid in the storage portion 14, and more preferably, the specific gravity is 6.0 or more.

Since the outer diameter and length of the agitating body 14a are defined as described above, the agitating body 14a can be made into a rod-shaped agitator 14a with a length that is accommodated in the accommodating part (accommodating part) 14, and the liquid in the accommodating part 14, Even with a small diameter that does not obstruct air movement, weight can be increased by length. Therefore, it is easier to make the product shaft thinner or have a double structure than with a stirring ball. On the other hand, when a thin stirring rod is stored horizontally, it has a large surface area that buries or comes in contact with the cake of sediment, so it needs to be heavier than a ball in order to ensure its ability to stir when shaken. If the stirring body 14a is long, it can be made to have an appropriate weight.

A collector 16 is provided behind the applicator body 18 of the cosmetic applicator as an air exchange mechanism. Ink flows into the collector 16 from the accommodating part 14 through the core 22 and the slits, and the air pressure around the outer circumference of the collector 16 is maintained by outside air flowing through the air exchange hole 10c of the tip shaft 10. Even if the air inside increases or decreases, outside air can appropriately flow through the collector 16, and the collector can sufficiently function as an air exchange mechanism.

Further, a shielding plate 26 integrated with the collector 16 is provided between the housing space 14b of the housing section 14, the air displacement mechanism of the collector 16, and the housing space 14b. The shielding plate 26 prevents large shocks and vibrations from being applied to the collector 16 when the agitator 14a is shaken, and can prevent the coating liquid from spouting out without affecting the air exchange mechanism.

In the storage section 14, the cosmetic liquid stored as a coating liquid in the storage space 14b preferably contains water, a water-soluble organic solvent, a film forming agent, a coloring material, and a preservative as main components. .

Specifically, as the coloring material used, at least one of titanium oxide, iron oxide, iron oxide, iron oxide, and the like can be used. Titanium oxide has a specific gravity of 3.8 to 4.2 and preferably has a particle size of 200 to 500 nm in cosmetics. Iron oxide has a specific gravity of 3.8 to 5.5 and is suitable for use in cosmetics. The particle size in the cosmetic is preferably 90 to 600 nm, the specific gravity of the cosmetic is 1.8 to 1.9, the particle size in the cosmetic is preferably 80 to 300 nm, and the specific gravity of the cosmetic is 1.8 to 1.9, and the particle size in cosmetics is preferably 300 to 600 nm. Here, in the present invention, the "particle size" is a value determined from a liquid cosmetic (25° C.) using a particle size measuring device FPAR-1000 (manufactured by Otsuka Electronics Co., Ltd.) using a dynamic light scattering method.

Other coloring materials that can be used include, for example, Blue No. 1 Al Lake, Red No. 202, Red No. 220, Red No. 226, Red No. 228, Blue No. 201, Blue No. 204, Blue No. 404, Yellow No. 401. , Yellow No. 205, Yellow No. 4 Al Lake, Yellow No. 203 Al Lake, Red No. 104 Al Lake, carbon black, carmine, and other organic pigments, Red No. 2, Red No. 3 (FD&C Red No. 3), Red 40 (FD&C Red No. 40), Red No. 102, Red No. 104 (D&C Red No. 28), Red No. 105, Red No. 106, Red No. 201 (D&C Red No. 6), Red No. 202 (D&C Red No. .7), Red No. 203, Red No. 205, Red No. 227 (D&C Red No. 33), Red No. 230-1 (D&C Red No. 22), Red No. 401, Red No. 402, Red No. 504 (FD&C Red No.4), Orange No.205 (D&C Orange No.4), Orange No.402, Yellow No.4 (FD&C Yellow No.5), Yellow No.5 (FD&C Yellow No.6), Yellow No.203 (D&C Yellow No. 10), Yellow No. 402, Yellow No. 403-1 (Ext. D & CYellow No. 7), Yellow No. 406, Yellow No. 407, Green No. 3 (FD&C Green No. 3), Green No. 201, Green No. 402, Blue 1 (FD&C Blue No. 1), Blue No. 2 (FD&C Blue No. 2), Blue No. 203, Blue No. 205 (D&C Blue No. 4), Blue No. 403, Blue No. 404, Brown No. 201 (D&C Brown No. .1), acid dyes such as Ext.D&C Violet No. 2, and black No. 401, and at least one kind selected from the above-mentioned inorganic pigments such as titanium oxide, iron oxide, konjou, and gunjou. The coloring material is not particularly limited as long as it is used in water-based cosmetics.
The content of these coloring materials is 0.05 to 30% based on the total amount of liquid cosmetics, from the viewpoint of color development, suitable viscosity, and smooth ejection with a water-based cosmetic applicator equipped with an applicator. is preferable, and more preferably 0.1 to 20%.

The water-soluble organic solvent that can be used is not particularly limited as long as it is commonly used in cosmetics. Examples include ethanol, isopropanol, phenoxyethanol, and the like.
The content of these water-soluble organic solvents is preferably 0 to 20%, more preferably 8 to 15%, based on the total amount of the liquid cosmetic.

Film forming agents that can be used include, for example, emulsions of copolymers selected from one or more monomers selected from acrylic acid, methacrylic acid or their alkyl esters or derivatives, styrene, and vinyl acetate. Examples include resin.
The content of these film forming agents (emulsion resins) is preferably 2 to 15%, more preferably 2 to 10%, based on the total amount of liquid cosmetics in terms of solid content (resin content). .

The liquid cosmetic used uses water (including purified water, distilled water, ion exchange water, pure water, ultrapure water, etc.) as a solvent. The content of this water is the remainder containing the above-mentioned components and optional components described below.
Furthermore, the liquid cosmetic to be used can contain, in addition to the above-mentioned components, optional components used in ordinary liquid cosmetics. Specifically, preservatives, antioxidants, neutralizers, ultraviolet absorbers, chelating agents, humectants, beauty ingredients, fragrances, viscosity modifiers, etc. are contained in appropriate amounts within the range that does not impair the effects of the present invention. be able to.

For liquid cosmetics to be used, it is preferable to use an ELD-type viscometer at a temperature of 25°C and a shear rate of 76.6S ^-1 in order to allow the application liquid to be smoothly discharged from the applicator and to exhibit good application performance. The viscosity is preferably in the range of 2 to 9 mPa·s, and the surface tension of the liquid cosmetic is preferably 34 mN/m or more.

According to the cosmetic applicator according to the first embodiment, the agitating body 14a is provided in the accommodating part (accommodating part) 14, and the outer diameter and length of the agitating body 14a are defined as described above. The stirring body 14a can be made long enough to be housed in the housing part 14, and even if it has a small diameter that does not obstruct the movement of liquid and air in the housing part 14, the weight can be increased depending on the length. Therefore, it is easier to make the product shaft thinner or have a double structure than with a stirring ball. On the other hand, when a thin stirring rod is stored horizontally, it has a large surface area that buries or comes in contact with the cake of sediment, so it needs to be heavier than a ball in order to ensure its ability to stir when shaken. If the stirring body 14a is long, it can be made to have an appropriate weight.

In addition, since the stirring body 14a is formed of a material that does not contain formaldehyde, it is possible to prevent formalin from eluting from the stirring body 14a into the cosmetic liquid and provide a highly safe applicator as a cosmetic applicator. can.

[Second embodiment]
A cosmetic applicator according to a second embodiment will be described. FIG. 3 is a perspective view of the stirring body 28 attached to the cosmetic applicator. The structure of the cosmetic applicator other than the stirring body is the same as that of the first embodiment.

This stirring body 28 has a hollow cylindrical shape as shown in FIG. Since the stirring body 28 is hollow, it has high stirring performance and can be light in weight.

As an example, if the stirring body is too heavy (1 g or more), the impact during stirring will be large, so there are concerns about the following points. There are concerns about problems such as breakage, cracks, etc. of the housing parts, detachment of the housing parts, unnecessary shock to the hands, generation of noise, etc.

Therefore, by making the agitating body 28 of the cosmetic applicator hollow according to the second embodiment, the above problem can be solved.

[Third embodiment]
A cosmetic applicator according to a third embodiment will be described. FIG. 4 is an explanatory diagram of the stirring body 30 attached to the cosmetic applicator. The structure of the cosmetic applicator other than the stirring body is the same as that of the first embodiment.

This stirring body 30 is made of a coil spring type spring as shown in FIG. 4, and has the following advantages.

Since the stirring body 30 is a wound coil, the outer diameter can be easily adjusted during processing, so that it can easily be adapted to accommodate the thin shaft housing section 14. In addition, since the outer diameter of the stirring body 30 can be expanded to the full inner diameter of the container, there is less space for the cake to be buried by the sedimented components of the cosmetic, and it is easier to move than the stirring rod. Additionally, because there is a gap between the center of the spring and the wire, air and liquid move smoothly during stirring.

Further expected effects of the spring include shock absorption, reduction of noise during stirring, and improvement of the stirring effect due to the protrusions on the spring surface.

According to the embodiment, a cosmetic applicator is shown as an applicator, but the applicator of the present invention is not limited to a cosmetic applicator, and can be used as an applicator for other writing liquids.

The applicator of the present invention can be used as a cosmetic applicator containing a solid substance such as a pigment in which the application liquid is a cosmetic, and can also be used as an applicator for writing and application.

10 Front shaft 12 Outer shaft 14 Accommodation section 14a Stirring body 14b Accommodation space 16 Collector 18 Applicator 22 Core 26 Shielding plate 28 Stirring body (second embodiment)
30 Stirring body (third embodiment)

Claims (1)

In an applicator that stores a coating liquid containing solids in a storage part in a barrel,
A stirring body is provided in the housing part,
The storage part in which the coating liquid is stored has a double pipe structure separate from the outer shaft,
The outer diameter of the agitator is 40 to 60% of the inner diameter of the accommodating part, the length of the agitator is 10 to 50% of the length of the accommodator, and the weight of the agitator is 0.2 to 1.0 g. It has a cylindrical shape with a higher specific gravity than that of a cosmetic lotion made of materials that do not contain formaldehyde.
The cosmetic liquid as the coating liquid contains water, a water-soluble organic solvent, a film forming agent, a coloring material, and a preservative as main components, and the content of the coloring material is 0 based on the total amount of the liquid cosmetic. .05-30% ,
An applicator characterized in that the agitating body is made of stainless steel .

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