COSMETIC APPLICATOR
20250113908 ยท 2025-04-10
Assignee
Inventors
Cpc classification
B43K8/08
PERFORMING OPERATIONS; TRANSPORTING
A46B9/026
HUMAN NECESSITIES
B43K8/022
PERFORMING OPERATIONS; TRANSPORTING
International classification
A45D34/04
HUMAN NECESSITIES
A46B9/02
HUMAN NECESSITIES
A46B11/00
HUMAN NECESSITIES
B43K8/02
PERFORMING OPERATIONS; TRANSPORTING
Abstract
A cosmetic applicator capable of stably applying a cosmetic even when the cosmetic contains large particles. A cosmetic applicator includes a barrel, a brush made of bundled fibers and provided in front of the barrel, a cosmetic accommodation portion arranged in a space behind the barrel, a guide that guides a cosmetic from the cosmetic accommodation portion to the brush, a collector that has a comb-shaped outer circumferential surface and that is disposed inside the barrel and at an outer circumferential portion of the guide, and a front barrel supporting the brush at a front portion of the barrel. A capillary force of the guide is 50 to 200 (mm) (as measured using purified water in an environment of 25 C.). (B)/(A) is 0.8 or greater, where (A) (mg) is an amount of cosmetic liquid discharged for 1 (m), and (B) (mg) is an amount of cosmetic liquid discharged for 1 (m) after 30 (m).
Claims
1. A cosmetic applicator comprising: a barrel; a brush made of bundled fibers and provided in front of the barrel; a cosmetic accommodation portion arranged in a space behind the barrel; a guide configured to guide a cosmetic from the cosmetic accommodation portion to the brush; a collector that has a comb-shaped outer circumferential surface and that is disposed inside the barrel and at an outer circumferential portion of the guide; and a front barrel supporting the brush at a front portion of the barrel, a capillary force of the guide being 50 to 200 (mm) (as measured using purified water in an environment of 25 C.), and (B)/(A) being 0.8 or greater, where (A) (mg) is an amount of cosmetic liquid discharged for 1 (m), and (B) (mg) is an amount of cosmetic liquid discharged for 1 (m) after 30 (m).
2. The cosmetic applicator according to claim 1, wherein a maximum diameter of the brush excluding a flange portion is 2.5 to 4 (mm), a ratio of a length (L1) of the brush protruding from the front barrel toward a front direction to a total length (L) of the brush, or L1/L, is 0.6 to 0.9, and the total length (L) of the brush is 15 (mm) or less.
3. The cosmetic applicator according to claim 1, wherein a front end surface of the guide is positioned in front of a front end surface of the front barrel, and a cross-sectional area of a space inside the brush is 15(%) or greater of a cross-sectional area of the brush.
4. The cosmetic applicator according to claim 1, wherein the cosmetic comprises at least glitter particles having a long axis length of 10 to 30 (m), glitter particles having a long axis length of 50 to 80 (m), and water.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0016]
[0017]
[0018]
[0019]
[0020] In
[0021]
DESCRIPTION OF EMBODIMENTS
[0022] Embodiments of the present disclosure will be described below with reference to drawings.
[0023]
[0024] As illustrated in
[0025] The barrel 100 has a structure in which the outer barrel 12 is fitted to the outer circumference of the rear side of the front barrel 10, and a collector 16 containing a plurality of lamella portions arranged in the axial direction to form a comb shape is disposed inside the front barrel 10.
[0026] Further, in the cosmetic applicator, a rear portion of the brush 18 is arranged inside the front barrel 10, and a front portion of the brush 18 is arranged to protrude from a front end opening 10f of the front barrel 10.
[0027] The cosmetic accommodation portion 14 that accommodates a cosmetic is detachably installed in the outer barrel 12, as an inner barrel.
[0028] The cosmetic accommodation portion 14 is fitted into a rear portion of the front barrel 10 and communicates with a rear portion of the collector 16. The cosmetic accommodation portion 14 that accommodates a cosmetic is independent from the outer barrel 12, forming a tube-in-tube structure, and the cosmetic applicator is a collector type cosmetic applicator.
[0029] Here, when the cosmetic applicator is not being used, as illustrated in
Outer Barrel 12 The outer barrel 12 has a tubular shape with a closed tail end. The cosmetic accommodation portion 14 is provided inside a space of the outer barrel 12 defined by the closed tail end, the rear portion of the front barrel 10, and the rear end of the collector 16.
Cosmetic Accommodation Portion 14
[0030] An impregnation body such as an absorbent core is not disposed inside the cosmetic accommodation portion 14. Instead, a liquid cosmetic is directly accommodated in the cosmetic accommodation portion 14 (free ink type), and a stirrer 14a for stirring the application liquid is disposed in the cosmetic accommodation portion 14.
[0031] The collector 16 is a covered structure that is positioned inside the front barrel 10 and behind the brush.
[0032] The front barrel 10, the outer barrel 12, the cosmetic accommodation portion 14, the collector 16, the cap 20, and the like may be resin molded products. Further, the stirrer 14a may be a cylindrical material made of metal or resin. The stirrer 14a is accommodated in an accommodation space 14b inside the accommodation portion 14.
Brush 18
[0033] The brush 18, which is made of a bundle of bristles having a tapered shape, protrudes from the opening 10f of a front end portion of the front barrel 10. The cap 20 covering the brush 18 is detachably fitted to the front barrel 10. The front barrel 10 has a substantially conical side shape and is tapered, and the front end angle of the front barrel 10 is preferably substantially the same angle as the front end angle of the brush 18.
[0034] A flange 18a is formed at a rear end portion of the brush 18 with an enlarged diameter. Inside the brush 18, there is a space 18b spanning from a center portion of the flange 18a toward a front end portion of the brush 18 up to the length of approximately or greater of the brush 18, and a front end portion 22a of the guide 22 is inserted into and present in the space 18b.
[0035] The brush 18 is formed in a brush shape and is made of a bundle of bristles (fiber bundle) in which a large number of resin fibers or natural fiber bundles are bundled. The diameter of the rear end portion of the brush 18 is enlarged, forming a flange shape, which is the flange 18a containing the space 18b inside. The flange 18a having an enlarged diameter engages with a front end 10e1 of a rib 10e inside the front end portion of the front barrel 10 in a non-surface contact manner, and thus is prevented from falling out. It should be noted that the brush 18 is preferably a brush body, but other various brushes for applying the application liquid can be used.
Front Barrel 10
[0036] As illustrated in
[0037] At the outer circumferential surface of the front barrel 10, a flange 10a is formed protruding in the outer radial. The flange 10a has a tapered front end portion and a center portion for positioning the cap 20 when the cap 20 is fitted. A protruding portion 10b1 for fitting the cap 20 is formed in front of the flange 10a, and two protruding portions 10b2 for fitting the outer barrel 12 are formed behind the flange 10a. In addition, air replacement holes 10c penetrating the circumferential surface from the inside to the outside are formed in front of the protruding portion 10b1 of the front barrel 10.
[0038] More specifically, as illustrated in
[0039] As illustrated in
[0040] As illustrated in
Cap 20
[0041] As illustrated in
Guide 22
[0042] The collector 16 having a bellows shape is disposed inside the hollow, tapered front barrel 10 behind the brush 18. The guide 22 penetrates the inside of a cylindrical portion 16d of the collector 16.
[0043] As illustrated in
[0044] The guide 22 does not protrude into the accommodation space 14b inside the accommodation portion 14 from the rear end portion of the collector 16 (see
Collector 16
[0045] As illustrated in
[0046] The guide 22 is inserted into the collector 16. In the embodiment, the cylindrical portion (or wall portion) 16d is formed near the axial center of the collector 16, and the guide 22 passes through the center of the cylindrical portion 16d. At the outer circumference of the cylindrical portion 16d, a plurality of thin plate-shaped fins (the front temporary storage portion 16b and the rear temporary storage portion 16c) for temporarily storing the application liquid are expanded in the outer diameter direction, forming a lamella.
[0047] In addition, in the collector 16, a longitudinal ink groove (slit) 16e that guides the application liquid into the gaps between fins is formed from the front temporary storage portion 16b to the rear temporary storage portion 16c and is exposed at the rear end portion (allowing for exposure to the accommodation space 14b of the accommodation portion 14). In addition, a thick support wall that abuts the inner surface of the front barrel 10 is provided between every several fins of the front temporary storage portion 16b and the rear temporary storage portion 16c, appropriately partitioning the fins.
Comparison Between Embodiment of the Invention and Comparative Example
[0048] In the present embodiment, a maximum diameter of the brush 18 excluding the flange 18a is 2.5 to 4 (mm), a ratio of a length (L1) of the brush protruding from the front barrel toward a front direction to a total length (L) of the brush, or L1/L, is 0.6 to 0.9, and the total length (L) of the brush is 15 (mm) or less.
[0049] In addition, in the cosmetic applicator, the front end portion 22a of the guide 22 is positioned in front of the front end surface portion 10f1 of the front barrel 10, and a cross-sectional area of the space 18b inside the brush 18 is 15(%) or greater of a cross-sectional area of the brush 18.
[0050] In
[0051] As illustrated in
[0052] As an example of this cosmetic applicator, a maximum diameter 1 of the brush 18 excluding a flange 18a is 2.9 (mm), a length (L1) of the brush 18 protruding from (a front end surface portion 10f1 of) the front barrel 10 toward the front direction is 8 (mm), a total length (L) of the brush 18 is 16 (mm), and a ratio of L1/L is 8/16 or 0.5. A space 18b inside the brush 18 has a length of 5.4 (mm). The space 18b inside the brush 18 has a maximum inside diameter of 1.2 (mm).
[0053] Therefore, in the cosmetic applicator of the comparative example, the cross-sectional area of the space 18b inside the brush 18 is 17(%) of the cross-sectional area of the brush 18 (8% compared to that in the example).
[0054] In comparison, as an example of the cosmetic applicator of the embodiment illustrated in
[0055] Therefore, in the cosmetic applicator according to the embodiment, the cross-sectional area of the space 18b inside the brush 18 is 25(%) of the cross-sectional area of the brush 18, which is 15(%) or greater.
[0056] In the cosmetic applicator of the embodiment, clogging of cosmetic can be prevented by enlarging the space 18b inside the brush 18 (application portion) from the front end surface of the front barrel 10.
[0057] As illustrated in
Liquid Cosmetic
[0058] The guide 22 has a capillary force (as measured using purified water in an environment of 25 C.) of 50 to 200 (mm). When the amount of cosmetic liquid discharged for 1 (m) is (A) (mg) and the amount of cosmetic liquid discharged for 1 (m) after 30 (m) is (B) (mg), (B)/(A) is 0.8 or greater.
[0059] The cosmetic includes at least glitter particles having a long axis length of 10 to 30 (m), glitter particles having a long axis length of 50 to 80 (m), and water, and has a viscosity of less than 25 (mPa.Math.s).
[0060] The liquid cosmetic composition in the accommodation portion 14 will be described in detail.
[0061] The glitter particles are tabular pigments whose surfaces are coated with a compound, and examples thereof include pigment flakes such as pearl pigments, aluminum flake pigments (aluminum powder pigments), metal- or metal oxide-coated glass flakes, and aluminum-coated polyester films, as well as those obtained by coating the surfaces of the tabular pigments above with compounds such as cellulose, hemicellulose, lignin, chitin, and chitosan. By combining a plurality of glitter particles, such as 0.5 to 2% of the glitter particles having a long axis length of 10 to 30 (m) and 2 to 5% of the glitter particles having a long axis length of 50 to 80 (m), a more vivid glitter coating film is easily obtained. When the percentage is below the numerical range above, it becomes difficult to obtain sufficient glitter during coating, and when the percentage exceeds the numerical range above, evaluation of the amount of liquid discharged becomes difficult.
[0062] In addition, an acrylic copolymer is preferably used from the viewpoint of fixing property and dispersion stability. The acrylic copolymer to be used includes, for example, at least one of an alkyl acrylate copolymer, an acrylates copolymer, an acrylates copolymer ammonium, an acrylic resin alkanolamine liquid, an alkyl acrylate-vinyl acetate copolymer, an (alkyl acrylate-octylacrylamide) copolymer, a silicone-modified acrylic copolymer, or an acrylic acid octylamide-acrylic acid copolymer.
[0063] The acrylic copolymer to be used is preferably an acrylic alkyl copolymer, an acrylates copolymer, or the like from the viewpoint of further performance and improvement of the fixing property. Examples of the alkyl acrylate copolymer include an (octylacrylamide/hydroxypropyl acrylate/butylaminoethyl methacrylate) copolymer (trade name AMPHOMER: powder) and an alkyl acrylate copolymer ammonium (trade name YODOSOL GH800F: solids content 45%).
[0064] Note that, for neutralization, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, triethanolamine, L-arginine, aqueous ammonia, sodium hydroxide, or the like can be used, and 2-amino-2-methyl-1-propanol is particularly preferable.
[0065] The content of these acrylic copolymers is preferably 1 to 20% in terms of solid content based on the total amount of the composition.
[0066] When the content of the acrylic copolymer is less than 1%, it is difficult for the effects of the present invention to exhibit. Meanwhile, when the content exceeds 20%, the thickening action becomes significant, and the discharge property from the application portion and good application cannot be carried out.
[0067] In addition to the above ingredients, the remainder of the liquid cosmetic composition is prepared with water (purified water, ion-exchanged water, distilled water, pure water, or the like) serving as a solvent.
[0068] Furthermore, a humectant, an antibacterial agent, an antifoaming agent, an inorganic pigment or an organic pigment, a dye, a surfactant, a water-soluble organic solvent, and the like can be appropriately contained within a range that does not interfere with the dispersion system and does not impair the effects of the present invention.
[0069] Examples of the humectant that can be used include water-soluble glycols such as 1,3-butylene glycol, 1,4-butylene glycol, pentylene glycol, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, and glycerin.
[0070] The content of these humectants is preferably used in the range of 1 to 30%, more preferably 5 to 208, with respect to the total amount of the composition.
[0071] Examples of the antibacterial agent that can be used include parabens, sodium dehydroacetate, phenoxyethanol, and the like. Note that, the antibacterial agent of the present invention includes preservatives. As parabens which are preservatives, methyl paraoxybenzoate, ethyl paraoxybenzoate, propyl paraoxybenzoate, butyl parahydroxybenzoate, isopropyl paraoxybenzoate, or the like can be used in an appropriate amount.
[0072] Examples of the antifoaming agent that can be used include polydimethylsiloxane (simethicone). This polydimethylsiloxane is a silicone oil consisting of a mixture of methylated linear siloxane polymers endblocked with trimethylsiloxy units.
[0073] The pH of the liquid cosmetic composition is preferably in the range of 6 to 9 from the viewpoint of suppressing skin irritation. Note that, the pH can be adjusted using a pH adjusting agent such as 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, triethanolamine, L-arginine, aqueous ammonia, sodium hydroxide, or a citric acid solution.
[0074] Table 1 presents an example in which the cosmetic applicator of a comparative example is compared with the cosmetic applicator of an example of the present invention in terms of the length of strokes drawn using various cosmetics accommodated in the cosmetic applicators. In this case, the comparative example and the example having the structures illustrated in In
TABLE-US-00001 TABLE 1 Reference Exam- Exam- Exam- Comparative Comparative Exam- Exam- Comparative Comparative Item Sign ple 1 ple 2 ple 3 Example 1 Example 2 ple 4 ple 5 Example 3 Example 4 Distance L1 10 10 10 10 10 10 8.5 6 6 L 16 14 14 16 14 16 14 14 14 L1/L 0.63 0.71 0.71 0.63 0.71 0.63 0.61 0,43 0.43 Cross- S1 6.60 6.60 6.60 6.60 6.60 6.60 6.60 6.60 3.80 Sectional S2 2.54 1.67 3.14 2.54 1.67 1.67 1.67 1.67 1.67 Area S2/S1 0.39 0.25 0.48 0.39 0.25 0.25 0.25 0.25 0.44 Guide a b c d e b b b b Amount of B/A 0.82 0.88 0.55 0.31 0.24 0.81 0.63 0.48 0.43 Cosmetic Liquid Discharged Evaluation A A B C C A B C C Result
[0078] The formulation of the cosmetic used is as follows. [0079] Humectant: 1.3-butylene glycol 8.0% [0080] Preservative 1.2% [0081] pH adjusting agent: 5% citric acid 0.4% [0082] Fixing agent: YODOSOL GH800F 17.2% [0083] Colored resin particles: LR-226-25 15.0% [0084] Glitter particles: Crystal SL (available from Toyo Aluminum [0085] K. K.) average particle size 20 m 1.0% [0086] Glitter particles: Frost SL (available from Toyo Aluminum K. [0087] K.) surface-treated with crystalline cellulose [(Ceolus RC-591 (available from Asahi Kasei Corporation)] by spray drying, average particle size 64 m 4.0% [0088] Purified water Remainder
[0089] The average particle size defined in the present invention is the D50 value calculated on a volume basis using a particle size distribution analyzer HRA9320-X100 (available from Nikkiso Co., Ltd.).
[0090] The viscosity of the cosmetic used is 4.0 mPa.Math.s.
[0091] In all of the comparative examples, application shortage occurred before the distance reached 30 (m) (evaluated as C). In examples 1 to 4, application reached 30 (m) and the result was good (evaluated as A).
[0092]
[0093] Guide a: molded core with an outer diameter of 1.8 (mm) and a capillary force of 94 (mm),
[0094] Guide b: molded core with an outer diameter of 1.5 (mm) and a capillary force of 113 (mm),
[0095] Guide c: fiber bundle core with an outer diameter of 2.0 (mm), a capillary force of 199 (mm), and a porosity of 61%,
[0096] Guide d: fiber bundle with an outer diameter of 1.8 (mm), a capillary force of 218 (mm), and a porosity of 74%, Guide e: fiber bundle with an outer diameter of 1.5 (mm), an average capillary force of 454 (mm), and a porosity of 48%
[0097] The capillary force was the average value of two measurements where n=3 in each example using purified water in an environment of a temperature of 25 C. and a humidity of 60%. The porosity was measured by immersing a guide having a known mass and apparent volume in purified water, sufficiently impregnating the guide with purified water, and then measuring the mass after taking the guide out from the purified water. From the measured mass, the volume of water impregnated in the guide was derived. Assuming that the volume of the purified water was the same as the pore volume of the guide, the porosity was calculated from the following equation. The opening area ratio was measured using an image taken of a radial cross section using an electron microscope.
[0098] The above-described embodiment is an example of the present invention, and it goes without saying that modifications made within the scope of the present invention are also within the technical scope.
INDUSTRIAL APPLICABILITY
[0099] The applicator according to the present disclosure can be used as an applicator for an application liquid.
REFERENCE SIGNS LIST
[0100] 10 Front Barrel [0101] 10f Front End Opening [0102] 10f1 Front End Surface Portion [0103] 12 Outer Barrel [0104] 14 Cosmetic Accommodation Portion [0105] 16 Collector [0106] 18 Brush [0107] 18a Flange [0108] 18b Space (Internal Space) [0109] 22 Guide [0110] 22a Front End Portion of Guide [0111] 22b Communication Hole of Guide [0112] 100 Barrel