Method for producing stick-shaped cosmetic

Abstract

To provide a method for producing a stick-shaped cosmetic capable of enhancing aesthetics.SOLUTION: There is produced a stick-shaped cosmetic 1 having a multicolor region comprising a plurality of regions in which a cross-section perpendicular to the axial direction is classified by color with N kinds of colors (N is an integer of 2 or more). A plurality of single-color core materials constituting the stick-shaped cosmetic 1 are prepared for each of N kinds of colors. Then, a bulk mass 51 containing a plurality of core materials of N different colors aligned in the axial direction is extruded along the axial direction by an extrusion molding machine 61 to obtain a stick-shaped cosmetic 1.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to a method for manufacturing a stick-shaped cosmetic.

Background Art

[0002] As stick-shaped cosmetics such as eyebrow pencils and eyeshadows, those having a multi-color region composed of a plurality of regions whose cross-sections perpendicular to the axial direction are color-separated are known. As a technique related to a method for manufacturing such a stick-shaped cosmetic, for example, Patent Document 1 describes a method for manufacturing a pencil-shaped or mechanical pencil-shaped cosmetic including a core body (stick-shaped cosmetic) having several kinds of elongated and segmented color streaks.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the method for manufacturing a stick-shaped cosmetic as described above, kneaded grains of each color are kneaded so as not to mix with each other to form an intermediate body (multi-color ball body), and this intermediate body is extruded by a molding machine to manufacture a stick-shaped cosmetic. Therefore, for example, in the vicinity of the extrusion port (nozzle) of the molding machine, the intermediate body may be rubbed against the inner wall surface of the molding machine and stretched in the extrusion direction. In this case, on the side surface of the manufactured stick-shaped cosmetic, for example, a plurality of types of colors may be mixed and become dirty, and the aesthetic appearance of the stick-shaped cosmetic may be impaired.

[0005] Therefore, an object of the present disclosure is to provide a method for manufacturing a stick-shaped cosmetic capable of enhancing the aesthetic appearance.

Means for Solving the Problems

[0006] The method for manufacturing a rod-shaped cosmetic according to the present disclosure is a method for manufacturing a rod-shaped cosmetic having a multicolor region composed of a plurality of regions whose cross-section perpendicular to the axial direction is color-coded with N types (N is an integer of 2 or more) of colors, and includes a first step of preparing a plurality of single-color core materials constituting the rod-shaped cosmetic for each of the N types of colors, and a second step of extruding a plurality of core materials of N types of colors or an intermediate body including a plurality of core materials of N types of colors with their axial directions aligned along the axial direction by a molding machine to obtain a rod-shaped cosmetic.

[0007] In this method for manufacturing a rod-shaped cosmetic, when the intermediate body is extruded in the axial direction by a molding machine, even if the intermediate body rubs along the inner wall surface of the molding machine in the axial direction, the core material contained therein will be stretched in the axial direction, and it is possible to suppress the mixing of a plurality of different core materials, so it is possible to suppress the mixing of a plurality of types of colors. Therefore, in the manufactured rod-shaped cosmetic, it is possible to suppress the soiling of its side surface and enhance the aesthetic property.

[0008] (2) In the above (1), in the second step, the plurality of core materials of N types of colors in the intermediate body may be randomly arranged. In this case, it is possible to randomly configure the color pattern of the multicolor region.

[0009] (3) In the above (1) or (2), in the second step, the plurality of core materials of N types of colors in the intermediate body may be arranged so as to form a pattern composed of at least one of a dot pattern, a marble pattern, a camouflage pattern, and a mosaic pattern when viewed from the axial direction. In this case, in the manufactured rod-shaped cosmetic, it is possible to enhance the aesthetic property by the color pattern included in the multicolor region.

[0010] (4) In any of the above (1) to (3), the second step may include a step of bundling a plurality of core materials of N types of colors while aligning their axial directions and packing them into the inside of a cylindrical member, and a step of compressing and integrating the plurality of core materials packed into the cylindrical member in the axial direction to form a columnar intermediate body. In this case, it is possible to easily and surely perform the molding by a molding machine.

[0011] (5) In any of the above (1) to (4), the cross-sectional shape of the core material may be a polygonal shape. In this case, a core material with a polygonal cross-sectional shape can be used.

[0012] (6) In any of the above (1) to (5), the maximum width of the cross-section of the core material may be 0.1 to 10 mm. In this case, it becomes possible to include fine color patterns in the multi-color region of the manufactured rod-shaped cosmetic.

[0013] (7) In any of the above (1) to (6), the oily component of the core material may be 30% by mass or more and 80% by mass or less. In this case, since the intermediate body is easily stretched when rubbed against the inner wall surface of the molding machine, the above effect of suppressing the mixing of multiple types of colors is particularly effective.

[0014] (8) In any of the above (1) to (7), the intermediate body may contain 12 or more core materials. In this case, it becomes possible to include various color patterns in the multi-color region of the manufactured rod-shaped cosmetic.

Effect of the Invention

[0015] According to the present disclosure, it is possible to provide a method for manufacturing a rod-shaped cosmetic that can enhance aesthetic properties.

Brief Description of the Drawings

[0016]

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[0017] Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant descriptions are appropriately omitted. The drawings may be drawn with some parts simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those described in the drawings.

[0018] In the present disclosure, the rod-shaped cosmetic is, for example, lipstick, lip stick, lip liner, lip gloss, eyeliner, eyebrow, eyeshadow, concealer, or beauty stick. The rod-shaped cosmetic may be a rod-shaped material containing a solid material at room temperature (for example, 25° C.), or instead of or in addition to this, a rod-shaped material containing a flexible material (for example, semi-solid, soft-solid, jelly-like, mousse-like, or a kneaded product containing these).

[0019] As shown in FIGS. 1 and 2, the stick cosmetic 1 has a rod shape with a circular cross section. The stick cosmetic 1 is accommodated in a tapered cylindrical container 2 to constitute a cosmetic tool 100. The cosmetic tool 100 can use the stick cosmetic 1 by feeding it out from the tip side of the container 2 by a feeding mechanism (not shown). That is, in the cosmetic tool 100, the stick cosmetic 1 can be applied with a part of its appearance exposed. Here, the stick cosmetic 1 is applied with at least a part of the end face and the outer peripheral surface (side face) in the axial direction of the stick cosmetic 1 (hereinafter, also simply referred to as the "axial direction") exposed.

[0020] In the cosmetic tool 100, the stick cosmetic 1 may be loaded on a wooden shaft or a resin shaft, or may be loaded in a feeding cartridge. The stick cosmetic 1 may be an oil-based stick cosmetic. For example, the oil-based component may be 30% by mass or more and 80% by mass or less. The stick cosmetic 1 may contain a pearl pigment. The cross-sectional shape of the stick cosmetic 1 is not particularly limited, and may be a polygonal shape, an elliptical shape, a flat circular shape, a droplet shape (also referred to as a teardrop shape or a tear shape), or the like.

[0021] The outer peripheral surface of the stick cosmetic 1 includes a striped pattern. Here, the entire outer peripheral surface of the stick cosmetic 1 exhibits a striped pattern. The striped pattern on the outer peripheral surface of the stick cosmetic 1 extends along the axial direction and is composed of a plurality of linear regions colored with N types (N is an integer of 2 or more) of colors. The width of each stripe of the striped pattern (the dimension in the circumferential direction of each of the plurality of linear regions) may be different from each other, or the widths of some stripes may be the same. The color arrangement pattern (the arrangement of the colors of each stripe) of the striped pattern is set randomly.

[0022] As shown in FIGS. 3(a), 3(b) and 4, the stick cosmetic 1 has a multicolor region 11 in which a cross section perpendicular to the axial direction is composed of a plurality of regions colored with N types of colors. Here, the multicolor region 11 is a region that appears in the entire cross section perpendicular to the axial direction of the stick cosmetic 1. The multicolor region 11 is a region that appears in the cross section at any position in the axial direction of the stick cosmetic 1. The multicolor region 11 includes a pattern composed of at least any one of a dot pattern, a marble pattern, a camouflage pattern, and a mosaic pattern.

[0023] The dot pattern is a pattern formed by arranging a plurality of dots (balls) regularly or irregularly. The marble pattern is a pattern imitating marble, such as a pattern formed by overlapping fine swirls or streaks, or a pattern formed by overlapping a flowing shape in multiple colors. The camouflage pattern is a pattern with an atmosphere that blends into a forest or the like, and is also called a camouflage pattern. The mosaic pattern is a pattern formed by joining small pieces together.

[0024] Among the plurality of regions color-coded with N types of colors in the multicolor region 11, the area of the largest region, which is the largest, is 30% or less of the total area of the multicolor region 11. Among the plurality of regions color-coded with N types of colors in the multicolor region 11, the area of the smallest region, which is the narrowest, is 0.1% or more of the total area of the multicolor region 11. The boundary lines of the plurality of regions color-coded with N types of colors in the multicolor region 11 are amorphous. The boundary lines of the plurality of regions color-coded with N types of colors in the multicolor region 11 are not a fixed straight line, not a fixed curve, and extend including fluctuations or irregularities. The number of intersections between the center line passing through the center of the multicolor region 11 and the boundary lines of the plurality of regions color-coded with N types of colors is 5 or more, preferably 10 or more, more preferably 15 or more, and even more preferably 20 or more.

[0025] The area of any one of the plurality of regions color-coded with N types of colors in the multicolor region 11 may be 0.1 to 30% of the whole of the multicolor region 11, or may be 0.2 to 5%. Each color region in the multicolor region 11 may be 30 or more in number. Here, the multicolor region 11 includes approximately 30 A-color regions, approximately 30 B-color regions, and approximately 30 C-color regions.

[0026] The stick-shaped cosmetic 1 can express a predetermined color obtained by mixing N types of colors in the multicolor region 11 as an applied color. That is, the stick-shaped cosmetic 1 can express a predetermined color as an applied color by mixing each color in the multicolor region 11 in an amount corresponding to the area ratio of the regions of each color in the multicolor region 11. As an example, in the stick-shaped cosmetic 1, the area ratio of the A-color region, the B-color region, and the C-color region in the multicolor region 11 is set to 1:1:1, and the predetermined color obtained by mixing the A color, the B color, and the C color at 1:1:1 is used as the applied color. The predetermined color is theoretically the same color as the mixture of the three colors of the A color, the B color, and the C color. For example, the A color may be blue, the B color may be orange, the C color may be green, and the predetermined color may be brown.

[0027] In the present embodiment, the multicolor region 11a (FIG. 3(a)) of the first cross section at an arbitrary position of the stick-shaped cosmetic 1, the multicolor region 11b (FIG. 3(b)) of the second cross section at an arbitrary position different from the first cross section, and the multicolor region 11c (FIG. 4) of the third cross section at an arbitrary position different from the first cross section and the second cross section have the following relationship.

[0028] That is, the area ratio of the regions of each color in the multicolor region 11a of the first cross section is equal to the area ratio of the regions of each color in the multicolor region 11b of the second cross section. In other words, the ratio of the total area of the A-color region, the total area of the B-color region, and the total area of the C-color region in the multicolor region 11a is equal to the ratio of the total area of the A-color region, the total area of the B-color region, and the total area of the C-color region in the multicolor region 11b. Also, the area ratio of the regions of each color in the multicolor region 11b of the second cross section is equal to the area ratio of the regions of each color in the multicolor region 11c of the third cross section. In other words, the ratio of the total area of the A-color region, the total area of the B-color region, and the total area of the C-color region in the multicolor region 11b is equal to the ratio of the total area of the A-color region, the total area of the B-color region, and the total area of the C-color region in the multicolor region 11c.

[0029] In the multi-color region 11a of the first cross-section, the arrangement of the regions of each color is different from the arrangement of the regions of each color in the multi-color region 11b of the second cross-section. In other words, the shape of the pattern and / or the color scheme pattern of the multi-color region 11a is different from the shape of the pattern and / or the color scheme pattern of the multi-color region 11b. The arrangement of the regions of each color in the multi-color region 11b of the second cross-section is different from the arrangement of the regions of each color in the multi-color region 11c of the third cross-section. In other words, the shape of the pattern and / or the color scheme pattern of the multi-color region 11b is different from the shape of the pattern and / or the color scheme pattern of the multi-color region 11c.

[0030] Next, a method for manufacturing the stick cosmetic 1 will be described with reference to the flowchart of FIG. 5.

[0031] First, a plurality of single-color core materials constituting the stick cosmetic 1 are prepared for each of N types of colors (step S1: the first step). The core material is a thin rod-shaped material, and the maximum width of the cross-section of the core material is 0.1 to 10 mm. The shape of the cross-section of the core material is not particularly limited, but for example, it is circular. Note that the cross-section of the core material may be polygonal as described later. The oil-based component of the core material is 30% by mass or more and 80% by mass or less. The core material may contain a pearl pigment. 12 or more core materials are used. For example, 20 core materials are used for each of N types of colors, for a total of 60 core materials. For example, the width of the core material is the largest value among the dimensions passing through the center in the cross-section orthogonal to its axial direction.

[0032] Subsequently, a bottomed cylindrical tubular member is prepared, and a plurality of core materials of N types of colors are aligned so that the axial direction is along the axial direction of the tubular member and packed into the tubular member (step S2). In step S2 above, a plurality of core materials of N types of colors are bundled while aligning the axial directions and mixing them, and packed into the tubular member without gaps. As a result, a plurality of core materials of N types of colors are randomly arranged in the tubular member without gaps. Here, the plurality of core materials of N types of colors are arranged so that the bulk mass 51 obtained in the subsequent process forms a pattern composed of at least one of a dot pattern, a marble pattern, a camouflage pattern, and a mosaic pattern when viewed from the axial direction.

[0033] Subsequently, a plurality of core materials packed inside the cylindrical member are compressed axially and integrated using a press machine. Thereby, a columnar bulk mass (intermediate body) 51 shown in FIG. 6 is formed (step S3). The bulk mass 51 includes a plurality of core materials of N types of colors. In the bulk mass 51, the plurality of core materials are integrated. The outer peripheral surface of the bulk mass 51 exhibits a striped pattern constituted by a plurality of regions color-coded with N types of colors. The striped pattern on the outer peripheral surface of the bulk mass 51 only needs to be along the axial direction, and may be linear, or may be in a shape of a reverse L, a zigzag, or a curve.

[0034] The shape of a reverse L is a shape in which a straight line extends while being bent once along the axial direction. Here, the shape of a reverse L is a shape in which, from one side in the axial direction toward the other side, after extending linearly, it bends and then extends linearly. The zigzag shape is a shape that extends in a zigzag shape along the axial direction. In other words, the zigzag shape is a shape in which a straight line extends while being bent a plurality of times along the axial direction. Here, the zigzag shape is a shape in which, from one side in the axial direction toward the other side, after extending linearly, it bends, and this is repeated a plurality of times. The width of each stripe of the striped pattern may be different from each other according to the arrangement of the plurality of core materials at the outer edge portion inside the cylindrical member, or the widths of some stripes may be the same. The color combination pattern of the striped pattern is set randomly according to the arrangement of the plurality of core materials at the outer edge portion inside the cylindrical member.

[0035] Subsequently, as shown in FIGS. 7 and 8, the bulk mass 51 is extrusion-molded by an extrusion molding machine 61 to obtain a rod-shaped cosmetic 1 (step S4). In step S4 above, with its axial direction as the molding direction D1, the bulk mass 51 is supplied into the cylinder 62 of the extrusion molding machine 61, and the bulk mass 51 is pushed out along the molding direction D1 by a piston 64. Thereby, the bulk mass 51 is stretched at the reduced-diameter portion (near the nozzle 65) of the tip portion 62A of the cylinder 62, and at the same time, its outer peripheral portion moves while rubbing against the inner wall surface, and is squeezed and extruded from the nozzle 65 as the rod-shaped cosmetic 1. As described above, for example, a rod-shaped cosmetic 1 having a diameter (width) that is 1 / 10 of the diameter (width) of the bulk mass 51 can be obtained.

[0036] Here, as described above, when the bulk mass 51 is extruded in the molding direction D1 which is the axial direction by the extrusion molding machine 61, the outer peripheral surface of the bulk mass 51 rubs along the inner wall surface of the tip portion 62A of the extrusion molding machine 61 in the axial direction. At this time, pressure is applied near the nozzle 65 of the tip portion 62A of the extrusion molding machine 61, and the bulk mass 51 is stretched. Even when the bulk mass 51 is stretched in this way, in the manufacturing method of the rod-shaped cosmetic 1 according to the present embodiment, the core material contained therein is stretched in the axial direction, and it is possible to suppress a plurality of different core materials from being mixed, so it is possible to suppress a plurality of types of colors from being mixed. Therefore, in the manufactured rod-shaped cosmetic 1, it is possible to suppress a plurality of types of colors from being mixed and getting dirty on its outer peripheral surface, and it is possible to enhance the aesthetic property. On the outer peripheral surface of the rod-shaped cosmetic 1, it is possible to prevent the color boundary from becoming unclear and to form long and vivid color streaks.

[0037] In the manufacturing method of the rod-shaped cosmetic 1, the plurality of core materials of N types of colors constituting the bulk mass 51 (the plurality of core materials packed in the cylindrical member) may be randomly arranged. In this case, it is possible to randomly configure the color pattern of the multicolor region 11.

[0038] In the manufacturing method of the rod-shaped cosmetic 1, the plurality of core materials of N types of colors are arranged so as to form a pattern composed of at least any one of a dot pattern, a marble pattern, a camouflage pattern, and a mosaic pattern when viewed from the axial direction. In this case, in the manufactured rod-shaped cosmetic 1, it is possible to enhance the aesthetic property by the color pattern included in the multicolor region 11.

[0039] The manufacturing method of the rod-shaped cosmetic 1 includes a step of bundling a plurality of core materials of N types of colors while aligning the axial directions and mixing them, and packing them inside the cylindrical member, and a step of compressing and integrating the plurality of core materials packed in the cylindrical member in the axial direction to form the bulk mass 51. In this case, it is possible to perform the molding by the extrusion molding machine 61 easily and surely.

[0040] In the manufacturing method of the rod-shaped cosmetic 1, the maximum width of the cross-section of the core material is 0.1 to 10 mm. By using such a thin core material, it becomes possible to include a fine color pattern in the multi-color region 11 of the manufactured rod-shaped cosmetic 1.

[0041] In the manufacturing method of the rod-shaped cosmetic 1, the oil-based component of the core material is 30% by mass or more and 80% by mass or less. In this case, since the bulk mass 51 is easily stretched when rubbed against the inner wall surface of the extrusion molding machine 61, the above effect of suppressing the mixing of multiple types of colors is particularly effective.

[0042] In the manufacturing method of the rod-shaped cosmetic 1, the bulk mass 51 may contain 12 or more core materials. In this case, it becomes possible to include various color patterns in the multi-color region 11 of the manufactured rod-shaped cosmetic 1. In the above, the above step S1 corresponds to the first step. The above steps S2 to S4 correspond to the second step.

[0043] In the rod-shaped cosmetic 1 according to the present embodiment, the aesthetic property can be enhanced by the color pattern of the multi-color region 11 of its cross-section. Also, the area ratio of each color region in the multi-color region 11a (see Fig. 3(a)) of the first cross-section is equal to the area ratio of each color region in the multi-color region 11b (see Fig. 3(b)) of the second cross-section. Therefore, when applying such that the colors in the multi-color region 11a are mixed when the first cross-section is the application surface, and when applying such that the colors in the multi-color region 11b are mixed when the second cross-section is the application surface, it is possible to express the same applied color (that is, consistent color usage), and practical usability can be obtained. Thus, it becomes possible to obtain a rod-shaped cosmetic 1 with excellent aesthetic property and usability.

[0044] In the rod-shaped cosmetic 1, the multi-color region 11 includes a pattern composed of at least any one of a dot pattern, a marble pattern, a camouflage pattern, and a mosaic pattern. In this case, it becomes possible to further enhance the aesthetic property by the color pattern of the multi-color region 11.

[0045] In the rod-shaped cosmetic 1, the arrangement of the regions of each color in the multicolor region 11a of the first cross-section is different from the arrangement of the regions of each color in the multicolor region 11b of the second cross-section. In this case, different patterns can be included in the multicolor region 11a of the first cross-section and the multicolor region 11b of the second cross-section.

[0046] In the rod-shaped cosmetic 1, the outer peripheral surface of the rod-shaped cosmetic 1 includes a stripe pattern composed of a plurality of linear regions that extend along the axial direction and are color-coded. In this case, the stripe pattern on the outer peripheral surface can further enhance the aesthetic property. In the rod-shaped cosmetic 1, it is possible to obtain an appearance of different multicolor patterns on its cross-section and outer peripheral surface.

[0047] In the rod-shaped cosmetic 1, among the plurality of regions color-coded with N types of colors in the multicolor region 11, the area of the largest region, which is the widest, is 10% or less of the total area of the multicolor region, and the area of the smallest region, which is the narrowest, is 1% or less of the total area of the multicolor region. In this case, it is possible to include a fine color pattern in the multicolor region 11.

[0048] In the rod-shaped cosmetic 1, the number of intersections between the center line passing through the center of the multicolor region 11 and the boundary lines of the plurality of regions color-coded with N types of colors is 5 or more. In this case, it is possible to include a fine color pattern in the multicolor region 11.

[0049] In the rod-shaped cosmetic 1, the boundary lines of the plurality of regions color-coded with N types of colors in the multicolor region 11 are amorphous. In this case, it is possible to include in the multicolor region 11 a color pattern composed of a plurality of regions with amorphous contours.

[0050] The rod-shaped cosmetic 1 can express a predetermined color obtained by mixing N types of colors as a coating color. In this case, when the rod-shaped cosmetic 1 is applied so that the colors in the multicolor region 11 are mixed, the predetermined color can be expressed as the coating color.

[0051] As described above, the embodiments of the rod-shaped cosmetic and its manufacturing method according to the present disclosure have been explained, but the rod-shaped cosmetic and its manufacturing method according to the present disclosure are not limited to the contents of the above-described embodiments.

[0052] In the above-described embodiments, for example, the number of core materials used, the cross-sectional shape of the rod-shaped cosmetic 1, the shape of the pattern in the multicolor region 11, the color combination pattern of the pattern in the multicolor region 11, and the density of the pattern in the multicolor region 11 are not particularly limited.

[0053] As an example, 150 core materials may be used for each of N types of colors, for a total of 450 core materials. In this case, the rod-shaped cosmetic 1A shown in FIG. 9 can be obtained. The rod-shaped cosmetic 1A has a circular cross-section. The area of each region in the multicolor region 11 of the rod-shaped cosmetic 1A may be 0.2 to 5% of the total area of the multicolor region 11. The number of times the center line passing through the center of the multicolor region 11 of the rod-shaped cosmetic 1A intersects the boundary lines of the plurality of regions may be 30 or more.

[0054] As another example, 6 core materials may be used for each of N types of colors, for a total of 18 core materials. In this case, the rod-shaped cosmetic 1C shown in FIG. 10 can be obtained. The rod-shaped cosmetic 1C has a circular cross-section. The area of each region in the multicolor region 11 of the rod-shaped cosmetic 1C may be 5.3 to 23.2% of the total area of the multicolor region 11. The number of times the center line passing through the center of the multicolor region 11 of the rod-shaped cosmetic 1C intersects the boundary lines of the plurality of regions may be 5 or more.

[0055] The rod-shaped cosmetic of the above-described embodiments may have a region of a predetermined color, which is a coating color obtained by mixing N types of colors, on the outer peripheral surface (side surface). For example, in the rod-shaped cosmetic 1E shown in FIG. 11, a region of a predetermined color is provided at the outer edge of the cross-section, and the entire outer peripheral surface of the rod-shaped cosmetic 1E may be a region of a predetermined color. In such a rod-shaped cosmetic 1E, the predetermined color as the coating color can be exhibited in its appearance. Therefore, the user can easily grasp the coating color.

[0056] In the above-described embodiments, a core material having a polygonal cross-sectional shape may be used. In this case, a core material having a polygonal cross-sectional shape can be utilized. Note that the cross-sectional shape of the core material is not particularly limited and may be an elliptical shape.

[0057] In the above-described embodiment, the bulk block 51 was formed as an intermediate body. However, without forming the bulk block 51 (without performing the above steps S2 and S3), a bundle of a plurality of core materials of N types of colors with their axial directions aligned may be used. In this case, a guide of an arbitrary shape may be inserted into the cylinder 62 of the extrusion molding machine 61, and a plurality of the core materials may be arranged therein. In the above-described embodiment, powder or paste may be attached to the core material, or powder or paste may be attached to a bundle of a plurality of core materials. In the above-described embodiment, the oil absorption amount or hardness of the core material is not limited, and various oil absorption amounts or hardnesses may be used.

[0058] In the above-described embodiment, the value of 0.1 mm, which is the maximum width of the cross-section of the core material, may be approximately 0.1 mm and may have errors in measurement or the like. In the above-described embodiment, the value of 10 mm, which is the maximum width of the cross-section of the core material, may be approximately 10 mm and may have errors in measurement or the like. In the above-described embodiment, 30% by mass, which is the oily component of the core material, may be approximately 30% by mass and may have errors in measurement or the like. In the above-described embodiment, 80% by mass, which is the oily component of the core material, may be approximately 80% by mass and may have errors in measurement or the like.

[0059] In the above-described embodiment, the term "equal" may not only be completely equal but also approximately equal, allowing for differences in the degree of measurement errors. In the above-described embodiment, 10% of the total area of the multicolor region 11 may be approximately 10% and may have errors in measurement or the like. In the above-described embodiment, 1% of the total area of the multicolor region 11 may be approximately 1% and may have errors in measurement or the like.

[0060] Each configuration in the above-described embodiment or modification can be arbitrarily applied to each configuration in other embodiments or modifications. A part of each configuration in the above-described embodiment or modification can be appropriately omitted without departing from the gist of one aspect of the present invention. The shape, position, size, number, material, and arrangement mode of each part of the above-described embodiment or modification can be appropriately changed within the scope of the above-described gist.

Explanation of Reference Numerals

[0061] 1, 1A, 1C, 1E... rod-shaped cosmetics, 11, 11a, 11b, 11c... multi-color areas, 51... bulk mass (intermediate), 61... extrusion molding machine.

Claims

1. A method for manufacturing a rod-shaped cosmetic having a multi-color region composed of a plurality of regions whose cross-sections perpendicular to the axial direction are colored with N types (N is an integer of 2 or more) of colors, a first step of preparing a plurality of single-color core materials constituting the rod-shaped cosmetic for each of the N types of colors, and a second step of, after the first step, extruding a plurality of the core materials of the N types of colors or an intermediate body including the plurality of the core materials of the N types of colors with their axial directions aligned along the axial direction by a molding machine to obtain the rod-shaped cosmetic. A method for manufacturing a rod-shaped cosmetic.

2. The method for manufacturing a rod-shaped cosmetic according to claim 1, wherein in the second step, the plurality of the core materials of the N types of colors in the intermediate body are randomly arranged.

3. The method for manufacturing a rod-shaped cosmetic according to claim 1 or 2, wherein in the second step, the plurality of the core materials of the N types of colors in the intermediate body are arranged so as to form a pattern constituted by at least any one of a dot pattern, a marble pattern, a camouflage pattern, and a mosaic pattern when viewed from the axial direction.

4. The second step includes a step of bundling a plurality of the core materials of the N types of colors while aligning their axial directions and packing them into the inside of a cylindrical member, and a step of compressing and integrating the plurality of the core materials packed in the cylindrical member in the axial direction to form a columnar intermediate body. The method for manufacturing a rod-shaped cosmetic according to claim 1 or 2.

5. The method for manufacturing a rod-shaped cosmetic according to claim 1 or 2, wherein the shape of the cross-section of the core material is a polygonal shape.

6. The method for manufacturing a rod-shaped cosmetic according to claim 1 or 2, wherein the maximum width of the cross-section of the core material is 0.1 to 10 mm.

7. The method for manufacturing a rod-shaped cosmetic according to claim 1 or 2, wherein the oil component of the core material is 30% by mass or more and 80% by mass or less.

8. The method for manufacturing a rod-shaped cosmetic according to claim 1 or 2, wherein the intermediate body includes 12 or more of the core materials.

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