Cosmetic application member, method for producing cosmetic application member, and cosmetic applicator

Abstract

To provide a rod-shaped cosmetic applicator member and a cosmetic applicator that are capable of maintaining a shape facilitating application to an object to be coated and a three-dimensional shape of an imprint such as a logo.SOLUTION: There is provided a cosmetic application member 1 comprising an outer member 2 and an inner shaft member 3. The outer member has a substantially rod-like shape, and has a recess in an axial direction from a rear end toward a tip portion. The inner shaft member is provided to be in contact with an inner surface of the recess of the outer member. The outer member is made of a sintered porous plastic, has a porosity of 30-70%, and a shape thereof is maintained before and after use. The inner shaft member is made of a porous body of a synthetic fiber and / or a synthetic resin. The porosity of the inner shaft member is greater than the porosity of the outer member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cosmetic application member, a method for manufacturing a cosmetic application member, and a cosmetic applicator, and in particular to a rod-shaped cosmetic application member that maintains its shape before and after use. [Background technology]

[0002] Stick-shaped cosmetic application members such as lipstick are manufactured by pouring a material containing oil and pigment into a mold or the like as described in Ogive or Patent Document 1, etc., and allowing it to harden. In particular, since ogive is an elastically deformable resin material, it can be molded into shapes that cannot be released from a mold, and three-dimensional patterns can also be applied, making it widely used to form rod-shaped cosmetic application members. On the other hand, by using a mold, fine irregularities can be formed on the tip of the cosmetic application member, as in Patent Document 2. A mold has the advantage that it does not need to be replaced as frequently as an ogive.

[0003] However, regardless of the molding method, typical rod-shaped cosmetic applicators color the target, such as skin, by transferring a pigment to the target along with the oil components contained in the raw material. As a result, the cosmetic applicator material wears and chips with each use, changing its shape, and any engraved or other patterns quickly wear away. Many consumers purchase cosmetic applicators, such as lipstick, while considering the brand, and therefore require that engraved patterns, such as logos, do not quickly chip away. Furthermore, it is required that the slopes, corners, or polygonal shapes of the tip of lipstick and other products do not simply resemble a rounded rod. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-045985 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-278976 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above circumstances, and aims to solve the problem that the shape and pattern of conventional cosmetic applicators such as lipstick cannot be maintained before and after use. [Means for solving the problem]

[0006] In order to solve the above problems, there is provided a cosmetic application member comprising an outer member and an inner shaft member, wherein the outer member is generally rod-shaped and has a recess in the axial direction from its rear end to its front end, the inner shaft member is arranged to abut against the inner surface of the recess in the outer member, the outer member is made of sintered porous plastic and has a porosity of 30% to 70%, and maintains its shape before and after use, and the inner shaft member is made of a porous body of synthetic fiber and / or synthetic resin, and the porosity of the inner shaft member is greater than that of the outer member.

[0007] The sintered porous plastic of the outer member may be sintered polyethylene.

[0008] The cosmetic application member may have a surface on the outer member that is inclined with respect to the axial direction at a tip portion thereof.

[0009] The cosmetic application member may have a fine concave or convex decorative pattern on the surface of the outer member.

[0010] The method for manufacturing a cosmetic application member of the present invention is characterized by including the steps of: preparing a mold having the surface shape of the outer member and the shape of the recess of the outer member; filling the mold with granular plastic material; heating the granular plastic material to mold the outer member; removing the outer member formed in the molding step; and inserting the inner shaft member into the recess of the outer member.

[0011] It is preferable that the mold is a combination of a first mold having the shape of the tip portion of the outer member and a second mold having the shape of the side portion excluding the tip portion of the outer member and the recess.

[0012] The cosmetic applicator of the present invention uses the above-described cosmetic application member.

[0013] The cosmetic applicator of the present invention is manufactured by the above-described method for manufacturing a cosmetic application member. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a rod-shaped cosmetic application member and cosmetic applicator that can maintain a shape that makes it easy to apply to an object and a three-dimensional shape of an engraved logo or the like. [Brief explanation of the drawings]

[0015] [Figure 1] An example of a cosmetic application member of the present invention is shown in Figure 1(a) as a front view, Figure 1(b) as a side view of the axial rear end portion, and Figure 1(c) as a longitudinal cross-sectional view. [Figure 2] Other examples of the cosmetic application member of the present invention are shown in Figure 2(a) where a logo is engraved in the center of the outer member, and Figure 2(b) where a logo is engraved in the tip of the outer member. [Figure 3] An example of a mold of the present invention is shown in Figure 3. (a) is an example of a longitudinal cross-sectional view, (b) is an example of a longitudinal cross-sectional view rotated 90° around the axial direction of (a), and (c) is an example of a side view of the rear end portion of the mold. [Figure 4] Examples of the cosmetic applicator of the present invention are shown in Figure 4(a) where a cosmetic application member is attached to and stored in a dispensing container, and Figure 4(b) where the cosmetic application member is dispensed from the dispensing container. DETAILED DESCRIPTION OF THE INVENTION

[0016] The applicator of the present invention will be described below with reference to the drawings and using appropriate reference numerals, but the embodiment is not limited to this.

[0017] In this specification, "tip portion" refers to the most distal end (position) of each component or part on the application side of the cosmetic applicator, "rear end" refers to the most distal end (position) of each component or part on the opposite side to the application side of the cosmetic applicator, "tip portion" refers to the tip portion and the area nearby the tip portion of each component, "rear end" refers to the area nearby the rear end of each component, and "central portion" refers to the area near the center of each component in the axial direction, between the tip portion and the rear end. Furthermore, "tip side" refers to the application side, and "rear end side" refers to the area opposite the application side.

[0018] The cosmetic application member 1 of the present invention comprises an outer member 2 and an inner shaft member 3 .

[0019] The outer member 2 is generally rod-shaped and has a recess extending axially from the rear end to the front end. The inner surface of the recess is provided to abut against the inner surface of the recess. The shape of the recess is not limited to a cylindrical shape, a polygonal prism, or any other shape that can be released from the mold described below. However, a cylindrical shape is preferable because it simplifies the process of inserting the inner shaft member 3 into the recess. Furthermore, the tip of the recess may be perpendicular to the axial direction in a vertical cross-sectional view, or may be rounded. Other shapes are also possible as long as the inner shaft member 3 can be inserted therein. As long as the shape of the outer member 2 before and after use is maintained, the depth of the recess may be within the axial length of the outer member 2, and the diameter of the recess may be within the outer diameter of the outer member 2. The inner axial member 3 inserted into the recess of the outer member 2 holds the cosmetic and creates a difference in capillary force with the outer member 2, thereby appropriately supplying the cosmetic to the outer member 2, so the depth is adjusted according to the required volume of the recess and the capillary force of the outer member 2.

[0020] It is desirable that the tip of the surface of the outer member 2 be formed with a slope to facilitate application of the cosmetic material. The corners, lines, and surfaces formed by the slope make it possible to apply the cosmetic material along the delicate shape of the object to be coated. In addition to the above-mentioned inclined surface, a polygon or an asymmetric / symmetric spherical surface may be formed on the tip portion of the surface of the outer member 2. However, it is desirable that the shape be such that it can be released from the mold described below.

[0021] Furthermore, a finely concave or finely convex decorative pattern may be formed on the surface of the outer member 2. As shown in Fig. 2(a), a finely concave decorative pattern such as a logo engraved from the tip to the center of the outer member 2 may be formed, or as shown in Fig. 2(b), a finely concave decorative pattern such as a logo engraved on the slope of the tip of the outer member 2 may be formed. If it is engraved, it will be concave, but a fine convex decorative pattern is also acceptable. However, if a fine pattern is applied to the sloped surface at the tip of the outer member 2, it is desirable that it be concave to avoid friction with the object to be coated.

[0022] The outer member 2 is made of sintered porous plastic. That is, it is formed by sintering plastic particles. Specific examples include polyolefins such as polyethylene and polypropylene, polyamides such as Nylon (registered trademark), polyphenylene sulfide, and acrylic resins. Among these, sintered polyethylene, which is formed by sintering polyethylene particles, is preferred.

[0023] When the outer member 2 is made of sintered polyethylene, the particle size of the polyethylene material is preferably in the range of 30 μm to 330 μm, more preferably 30 μm to 200 μm, or 50 μm to 200 μm. The molecular weight of the polyethylene particles is preferably in the range of 200,000 to 5,000,000, more preferably 1,000,000 to 4,500,000, and more preferably 1,500,000 to 1,900,000.

[0024] The porosity of the outer member 2 is preferably 30% to 70%, more preferably 30% to 60%, and even more preferably 30% to 50%.

[0025] The inner shaft member 3 is made of a porous material using synthetic fiber and / or synthetic resin. Examples of synthetic fiber-based materials include those obtained by bundling synthetic fibers and solidifying them with urethane resin, those obtained by mixing synthetic fibers with low melting points and bonding synthetic fibers with low melting points, etc. Examples of synthetic resin-based materials include those obtained by molding thermoplastic resin into the required cross-sectional shape and dimensions by melt extrusion molding, and those obtained by molding granular particles of thermoplastic resin that are partially fused to each other and form interconnected continuous pores between the granular particles by sintering. Examples include synthetic fibers such as nylon, polyester, and acrylic fibers, or mixed fibers thereof; synthetic resins such as polyethylene terephthalate (PET), polybutylene terephthalate, polyacetal, and polyamides such as nylon; olefin resins such as polyethylene and polypropylene; acrylic resins, polyvinyl chloride, polystyrene, polyvinyl acetate, polyurethane, Teflon (registered trademark), ABS resin, AS resin, polyphenylene sulfide, polysulfone, polyethersulfone, polyetheretherketone, and polyimide. The porosity of the porous body of the inner shaft member 3 is greater than that of the outer member 2. Therefore, when the amount of liquid such as cosmetics stored in the inner shaft member 3 in the outer member 2 decreases due to application or slight evaporation, the liquid such as cosmetics will move to the outer member 2 due to the capillary force of the outer member 2. The porosity of the inner shaft member 3 is preferably adjusted to a range of 65% to 95%, more preferably 75% to 95%, or 80% to 95%.

[0026] The cosmetic application member 1 can be attached to various cosmetic containers depending on the application, and can also be designed to be attached to a dispensing container. When attached to a lipstick dispensing container, the size of the cosmetic application member 1 depends on the shape of the dispensing container, but examples of the size include an outer diameter of 12 mm and a length of 36 mm. Also, examples of the size of the recess in the outer member 2 include an inner diameter of 8 mm and a length of 28 mm. That is, in this example, the size of the inner shaft member 3 is an outer diameter of 8 mm and a length of 28 mm. The shape of the rear end portion of the cosmetic application member 1 may be processed appropriately so that it can be attached to a cosmetic container according to the intended use. In this case, the rear end portion of the outer member 2 and the rear end portion of the inner shaft member 3 may be at the same axial position, or the rear end portion of the outer member 2 may be further rearward, or the rear end portion of the inner shaft member 3 may be further rearward.

[0027] By configuring the outer member 2 and the inner shaft member 3 with the materials and sizes described above, when the cosmetic application member 1 is used for lipstick, it has basic performance such as a feel on the skin that is at least as good as that of conventional oil-containing lipstick and the ability to adjust the amount of cosmetic applied to the same extent.In addition, the shape and uneven pattern 4 of the cosmetic application member 1 are maintained before and after use, allowing for repeated use.

[0028] The manufacturing method of the cosmetic application member 1 of the present invention includes the steps of preparing a mold K having the surface shape of the outer member 2 and the shape of the recess of the outer member 2, filling the mold K with granular plastic material, heating and molding the granular plastic material, removing the outer member 2 formed in the molding step, and inserting the inner shaft member 3 into the recess of the outer member 2.

[0029] As illustrated in Figures 3(a) and 3(b), the mold K is preferably a combination of a first mold K1 having the shape of the tip portion of the outer member 2 and a second mold K2 having the shape of the side and recessed portion excluding the tip portion of the outer member 2. The method and position (separation position) of combining the first mold K1 and the second mold K2 are not limited as long as the molded outer member 2 can be removed from the mold K. In addition, as shown in Figure 3(c), the mold K preferably has a filling port so that particulate plastic material can be filled from the rear end portion.

[0030] Granular plastic material is filled into the interior of the prepared mold K through the opening by vibration, and then heated. The heating conditions are adjusted to a range that will result in the formation of a sintered porous plastic. When the sintered porous plastic is sintered polyethylene, the heating temperature is, for example, 180°C and the heating time is 30 minutes. After the mold K is cooled, the outer member 2 is removed from the first mold K1 and the second mold K2. Separately, the inner shaft member 3 is molded. The inner shaft member 3 is a porous body made of synthetic fiber and / or synthetic resin, and the molding conditions are adjusted depending on the raw materials of the synthetic fiber and synthetic resin to obtain the porous body. The molded inner shaft member 3 is inserted into the molded outer member 2 to produce the cosmetic application member 1. Although the method of manufacturing the cosmetic application member 1 by inserting the inner shaft member 3 into the outer member 2 has been described, this does not exclude other manufacturing methods that can produce a cosmetic application member 1 having the above-mentioned characteristics.

[0031] The cosmetic applicator 5 of the present invention includes the above-mentioned cosmetic application member 1. In addition to the cosmetic application member 1, the cosmetic applicator 5 may also include any container or inner shaft member 3 impregnated with a cosmetic. An example of the optional container is a dispensing container 6 (see Fig. 4(a) and Fig. 4(b)). The cosmetic material may be any material that can be impregnated into the inner shaft member 3 and can be supplied to the outer member 2. The cosmetic material may contain water, polyhydric alcohol, glycerin, an emollient, a fixing agent, a preservative, a dye, a pigment, a fragrance, and the like. Furthermore, the cosmetic applicator 5 of the present invention is manufactured by the above-described method for manufacturing the cosmetic application member 1. However, other manufacturing methods that can produce the cosmetic application member 1 having the above-described characteristics may also be used. [Example]

[0032] The examples of the present invention were compared with conventional lipsticks and the like and evaluated.

[0033] A mold K in the shape of a rod-shaped cosmetic application member 1 was prepared. The mold K had an outer diameter of 12 mm and a length of 36 mm. The mold K had a convex portion with a diameter of 8 mm and a length of 28 mm corresponding to the concave portion of the outer member 2, and a filling port for filling with particulate plastic material. The mold K was a combination of a first mold K1 having the shape of the tip portion of the outer member 2 and a second mold K2 having the shape of the side portion and concave portion of the outer member 2 excluding the tip portion. Ultra-high molecular weight polyethylene (molecular weight: 1.7 million) with a particle size of 115 μm was filled through the filling port by vibration, and then heated to 180°C for approximately 30 minutes. The mold was cooled, and the outer member 2 with a porosity of 40% was removed. A porous inner shaft member 3 molded using 5-denier polyester fibers with a diameter of 8 mm and a length of 28 mm and a porosity of 83% was inserted into the concave portion of the outer member 2, thereby obtaining a cosmetic application member 1. The cosmetic application member 1 was attached to a dispensing container 6, and a cosmetic applicator 5 was designated Example 1.

[0034] In contrast, a commercially available lipstick (Lipstick Tint, manufactured by Erato Co., Ltd.) was used as Comparative Example 1. In addition, Comparative Example 2 was prepared by adjusting the porosity of the outer member to 80% and the porosity of the inner shaft member to 83%. Furthermore, a mold without the shape of the recess of the outer member was used, and a mold with a porosity of 40% (composed entirely of the outer member) without an inner shaft member was used as Comparative Example 3.

[0035] Ten people evaluated Example 1 and Comparative Examples 1 to 3. The evaluation was carried out using lips as the object to be applied, with Comparative Example 1, a conventional lipstick, being given a standard (◯), with those rated as excellent by eight or more people being rated as excellent by ◎, those rated as excellent by five or more people being rated as excellent by ○, and those rated as excellent by less than five people being rated as excellent by △. Here, "shape retention" evaluated whether the shape of the lipstick surface was maintained, "amount applied" evaluated whether the amount of cosmetic was excessive or insufficient, "feel on the skin" evaluated whether the lip felt good when applied to the lips, "stability over time" evaluated whether the cosmetic could be applied stably to the application target over multiple days, and "strength" evaluated whether the application part of the cosmetic application member was damaged when used repeatedly. The evaluation results are shown in Table 1.

[0036] [Table 1]

[0037] As shown in Table 1, Example 1 was found to be superior in terms of shape retention and strength, in addition to being pleasant to the touch and having an application amount adjusted so as not to be too excessive, compared to Comparative Example 1, a conventional lipstick. In particular, it was found that the shape of the tip of the outer member 2 and the finely textured decorative pattern applied thereto could be maintained during continued use. In contrast, the results of Comparative Example 2 revealed that when the porosity of the outer member is high, the feel on the skin is poor, the strength is reduced, and too much cosmetic material is dispensed. Furthermore, because too much cosmetic material is dispensed, the amount of cosmetic material applied decreases relatively quickly, resulting in poor stability over time. Furthermore, the results of Comparative Example 3 revealed that when the cosmetic application member was made of only the material of the outer member, the cosmetic settled and a significant decrease in the amount of cosmetic applied was observed.

[0038] The present invention may have the following features. [Section 1] A cosmetic application member comprising an outer member and an inner shaft member, the outer member is generally rod-shaped and has a recess in the axial direction from a rear end portion to a front end portion, the inner shaft member is provided to abut against an inner surface of the recessed portion of the outer member, The outer member is made of sintered porous plastic with a porosity of 30% to 70% and maintains its shape before and after use. the inner shaft member is made of a porous body of synthetic fiber and / or synthetic resin, The porosity of the inner shaft member is greater than the porosity of the outer member. Cosmetic application member. [Section 2] Item 1. A cosmetic application member according to item 1, wherein the sintered porous plastic of the outer member is sintered polyethylene. [Section 3] 3. A cosmetic application member according to item 1 or 2, wherein a slope is formed in the axial direction at the tip portion of the surface of the outer member. [Section 4] 4. The cosmetic application member according to any one of items 1 to 3, wherein the surface of the outer member has a decorative pattern of fine recesses or fine protrusions. [Section 5] A method for producing the cosmetic application member according to claim 1, comprising: providing a mold having a shape of a surface of the outer member and a shape of a recess of the outer member; filling the mould with particulate plastic material; heating the particulate plastic material to form the outer member; removing the outer member formed in the molding step; inserting the inner shaft member into the recess of the outer member; A method for manufacturing a cosmetic application member, comprising: [Section 6] Item 6. The method for manufacturing a cosmetic application member according to item 5, wherein the mold is a combination of a first mold having the shape of the tip portion of the outer member and a second mold having the shape of the side portion of the outer member excluding the tip portion and the recess. [Section 7] A cosmetic applicator using the cosmetic application member according to any one of items 1 to 4 above. [Section 8] Item 7. A cosmetic applicator manufactured by the method for manufacturing a cosmetic applicator member according to item 5 or 6. [Explanation of symbols]

[0039] 1 Cosmetic application member 2 Outer member 3 Inner shaft member 4. Textured pattern 5. Cosmetic applicators 6. Feeding container K mold K1 First mold K2 Second mold

Claims

1. A cosmetic application member comprising an outer member and an inner shaft member, the outer member is generally rod-shaped and has a recess in the axial direction from a rear end portion to a front end portion, the inner shaft member is provided to abut against an inner surface of the recessed portion of the outer member, The outer member is made of sintered porous plastic with a porosity of 30% to 70% and maintains its shape before and after use. the inner shaft member is made of a porous body of synthetic fiber and / or synthetic resin, The porosity of the inner shaft member is greater than the porosity of the outer member. Cosmetic application member.

2. The cosmetic application member of claim 1 , wherein the sintered porous plastic of the outer member is sintered polyethylene.

3. The cosmetic application member according to claim 1 or 2, wherein a slope is formed in the axial direction at the tip portion of the surface of the outer member.

4. The cosmetic application member according to claim 3 , wherein the surface of the outer member has a decorative pattern of fine concave or convex shapes.

5. A method for manufacturing the cosmetic application member according to claim 1, comprising: providing a mold having a shape of a surface of the outer member and a shape of a recess of the outer member; filling the mould with particulate plastic material; heating the particulate plastic material to form the outer member; removing the outer member formed in the molding step; inserting the inner shaft member into the recess of the outer member; A method for manufacturing a cosmetic application member, comprising:

6. 6. The method for manufacturing a cosmetic application member according to claim 5, wherein the mold is a combination of a first mold having the shape of the tip portion of the outer member and a second mold having the shape of the side portion excluding the tip portion of the outer member and the recess.

7. A cosmetic applicator using the cosmetic application member according to claim 1.

8. A cosmetic applicator manufactured by the method for manufacturing a cosmetic applicator member according to claim 5.

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