Method for producing an oily solid

Abstract

To efficiently produce an oily solid material in which one end of a first oily solid material is covered by a second oily solid material.SOLUTION: A method for producing an oily solid material 2 in which one end of a first oily solid material 21 is covered by a second oily solid material 22, is provided and having: a core installing step of installing a core 4 in a hollow cylindrical body 3; a first filling step of filling the molten second oily solid material 22 into the cylindrical body 3; a core pulling-out step of pulling out the core 4 from the cylindrical body 3; a rotation step of rotating the cylindrical body 3 in such a manner that the top and bottom of the cylindrical body 3 in a vertical direction Z invert; and a second filling step of filling the first oily solid material 21. In the core installing step, the core 4 is installed in such a manner that the core 4 does not extend from the top end, in the vertical direction Z, of the cylindrical body 3, in the first filling step, the second oily solid material 22 is filled until it exceeds the top end, in the vertical direction Z, of the core 4, and in the second filling step, the first oily solid material is filled in a recess 22c of the second oily solid material 22 having an opening 22d.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for producing an oily solid.

Background Art

[0002] Conventionally, an oily solid having a multilayer structure has been known. Examples of the oily solid include oily solid cosmetics such as the red part of lipstick. Patent Document 1 describes an oily solid cosmetic in which at least a part of the inner layer portion is covered by the outer layer portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 describes that the boundary between the inner layer portion arranged inside and the outer layer portion arranged outside of the oily solid cosmetic of the same document is clear. However, in the oily solid cosmetic of the same document, one end of the inner layer portion in the axial direction of the oily solid cosmetic is not covered by the outer layer portion and is exposed. Therefore, it is difficult to achieve high design quality and unexpectedness during use in the oily solid cosmetic of Patent Document 1. An object of the present invention is to provide a method for efficiently producing an oily solid that can eliminate the drawbacks of the above-described conventional technology.

Means for Solving the Problems

[0005] The present invention is a method for producing an oily solid in which one end of a first oily solid is covered by a second oily solid, a neutron installation step of installing neutrons in a hollow cylindrical body having openings at both axial ends, A first filling step of filling molten second oily solid matter into the inside of the cylindrical body from the opening at the other end side in the axial direction of the cylindrical body with the opening at one end side in the axial direction of the cylindrical body facing downward in the vertical direction; A neutron extraction step of extracting the neutron from inside the cylindrical body to the opening side at one end side in the axial direction of the cylindrical body; A rotation step of rotating the cylindrical body so that the opening at one end side in the axial direction of the cylindrical body faces upward in the vertical direction and the opening at the other end side in the axial direction of the cylindrical body faces downward in the vertical direction; And a second filling step of filling molten first oily solid matter from the opening at one end side in the axial direction of the cylindrical body, the method having: In the neutron installation step, the neutron is installed so as to close the opening at one end side in the axial direction of the cylindrical body and so that the neutron does not extend from the opening at the other end side in the axial direction of the cylindrical body; In the first filling step, the molten second oily solid matter is filled until it exceeds the upper end of the neutron in the vertical direction; In the second filling step, the first oily solid matter is filled into a recess of the second oily solid matter obtained by extracting the neutron in the neutron extraction step, the recess having an opening positioned upward in the vertical direction in the rotation step, the method providing a method for manufacturing an oily solid matter.

[0006] The present invention also relates to a method for manufacturing an oily solid matter in which one end of a first oily solid matter is covered with a second oily solid matter, the method comprising: A neutron installation step of installing a neutron in a hollow cylindrical body having openings at both ends in the axial direction; A first filling step of filling molten first oily solid matter into the inside of the neutron from the opening at the other end side in the axial direction of the cylindrical body with the opening at one end side in the axial direction of the cylindrical body facing downward in the vertical direction; A neutron extraction step of extracting the neutron from inside the cylindrical body to the opening side at one end side in the axial direction of the cylindrical body; A rotation step of rotating the cylindrical body such that the opening at one end side in the axial direction of the cylindrical body faces upward in the vertical direction and the opening at the other end side in the axial direction of the cylindrical body faces downward in the vertical direction; A second filling step of filling the inside of the cylindrical body with the melted second oily solid from the opening at one end side in the axial direction of the cylindrical body, and having; The core has a hollow bottomed cylindrical shape having an opening at one end in the axial direction of the core, In the core installation step, the core is installed with the opening of the core facing the opening side at the other end side in the axial direction of the cylindrical body, In the first filling step, the inside of the core is filled with the first oily solid from the opening of the core, In the second filling step, a method for manufacturing an oily solid is provided in which the second oily solid is filled until it exceeds the upper end in the vertical direction of the solidified first oily solid obtained by pulling out the core.

Advantages of the Invention

[0007] According to the method for manufacturing an oily solid of the present invention, an oily solid in which one end of the first oily solid is covered with the second oily solid can be efficiently manufactured.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

[0009] Hereinafter, the present invention will be described based on its preferred embodiments. Fig. 1 shows a cosmetic (hereinafter also referred to as a "stick cosmetic") 2 which is an example of an oily solid produced by the method for producing an oily solid of the present invention. The oily solid produced by the present invention is preferably attached to a cosmetic container 3 and used as a part of a cosmetic product 1, like the stick cosmetic 2 shown in Fig. 1. Examples of the stick cosmetic 2 include lipsticks, lip creams, lip glosses, stick eye shadows, eyebrow pencils, eyeliners, stick foundations, concealers, beauty white sticks, etc., and particularly makeup cosmetics having a stick shape are mentioned.

[0010] As shown in Fig. 1, the stick cosmetic 2 produced by the method for producing an oily solid of the present invention has a tip portion 2a located at one end in the axial direction Z of the stick cosmetic 2, and a base end portion 2b located on the side opposite to the tip portion 2a. The tip portion 2a of the stick cosmetic 2 is the end portion on the side directed toward the user when the stick cosmetic 2 is used. The base end portion 2b of the stick cosmetic 2 is the end portion on the side attached to the cosmetic container 3 when the stick cosmetic 2 is attached to the cosmetic container 3. In this specification, in the cosmetic product 1 and its constituent members, the side directed toward the user when the cosmetic product 1 is used is referred to as the tip side, and the side opposite to the tip side is referred to as the base end side.

[0011] The stick-shaped cosmetic 2 has a first oily solid 21 and a second oily solid 22. One end 21a of the first oily solid 21 is covered by the second oily solid 22. One end 21a of the first oily solid 21 is the end located on the tip 2a side of the stick-shaped cosmetic 2 among both ends in the axial direction Z of the first oily solid 21. The axial direction Z of the first oily solid 21 is the longitudinal direction when the first oily solid 21 is in a stick shape, and is the height direction or the like when it is in a block shape. FIG. 1 shows a virtual axis (line) Y of the first oily solid 21. The axial direction Z is the direction in which the axis Y extends. In FIG. 1, the axial direction of the first oily solid 21 coincides with the axial direction Z of the stick-shaped cosmetic 2, but they do not have to coincide. The other end 21b of the first oily solid 21 in the axial direction Z may or may not be covered by the second oily solid 22. In the stick-shaped cosmetic 2 shown in FIG. 1, the other end 21b of the first oily solid 21 in the axial direction Z is not covered by the second oily solid 22 and is exposed on the surface of the stick-shaped cosmetic 2.

[0012] Hereinafter, regarding a preferred first embodiment of the method for manufacturing an oily solid of the present invention, taking the case of manufacturing the stick-shaped cosmetic 2 shown in FIG. 1 as an example, it will be described with reference to FIG. 2. In FIG. 2, the stick-shaped cosmetic 2 and each member for manufacturing it are shown in a simplified manner. Specifically, in FIG. 1, the tip 2a of the stick-shaped cosmetic 2 has an inclined surface inclined with respect to the axial direction Z of the stick-shaped cosmetic 2, whereas in FIG. 2, for convenience, the inclined surface is shown as a surface perpendicular to the axial direction Z of the stick-shaped cosmetic 2.

[0013] The method for manufacturing an oily solid according to the first embodiment includes (1) a mandrel installation step, (2) a first filling step, (3) a mandrel extraction step, (4) a rotation step, and (5) a second filling step in this order.

[0014] (1) Mandrel installation step In the neutron installation step, as shown in Fig. 2(a), neutrons 4 are installed inside a hollow cylindrical body 3. The cylindrical body 3 has openings 3a and 3b at both ends in the axial direction Z of the cylindrical body 3. In Fig. 2(a), the axial direction of the cylindrical body 3 coincides with the axial direction Z of the first oily solid 21, but they do not have to coincide. From the viewpoint of facilitating the filling of the second oily solid 22 in the first filling step following the neutron installation step, in the state where the neutrons 4 are installed inside the cylindrical body 3, it is preferable that the opening 3b on one end side in the axial direction of the cylindrical body 3 faces downward in the vertical direction. At this time, it is more preferable that the angle formed by the axial direction of the cylindrical body 3 and the vertical direction is within 45 degrees, and it is even more preferable that the axial direction of the cylindrical body 3 and the vertical direction coincide. In Fig. 2(a), the vertical direction coincides with the axial direction Z of the cylindrical body 3, but they do not have to coincide. The mode in which the axial direction of the cylindrical body 3 and the vertical direction coincide includes not only the case where the axial direction of the cylindrical body 3 and the vertical direction completely coincide, but also the case where the axial direction of the cylindrical body 3 and the vertical direction substantially coincide. After the opening 3b of the cylindrical body 3 faces downward in the vertical direction, the neutrons 4 may be installed inside the cylindrical body 3, or after the neutrons 4 are inserted into the cylindrical body 3, the opening 3b of the cylindrical body 3 may be turned downward in the vertical direction. In the first embodiment, one end side in the axial direction Z of the cylindrical body 3 is the proximal end side in the cosmetic product 1 to be manufactured.

[0015] Also, in the neutron installation step, the neutrons 4 are installed so as to close the opening 3b on one end side in the axial direction Z of the cylindrical body 3. In Fig. 2(a), the opening 3b on one end side in the axial direction Z of the cylindrical body 3 faces downward in the vertical direction, and the opening 3a on the other end side in the axial direction Z of the cylindrical body 3 faces upward in the vertical direction.

[0016] In the neutron installation process, the neutron 4 is installed so that the neutron 4 does not extend from the opening 3a on the other end side in the axial direction Z of the cylindrical body 3. As shown in Fig. 2(a), when the opening 3a on the other end side in the axial direction Z of the cylindrical body 3 faces the upper side in the vertical direction, the neutron 4 is installed so that the neutron 4 does not extend from the upper end of the cylindrical body 3 in the vertical direction Z. Specifically, the neutron 4 is installed so that the upper end of the neutron 4 in the vertical direction Z is located below the upper end of the cylindrical body 3 in the vertical direction Z in the vertical direction Z. Here, the upper end of the cylindrical body 3 in the vertical direction Z means the upper end of the cylindrical body 3 itself in the vertical direction Z even when the neutron 4 is installed in the cylindrical body 3. In Fig. 2(a), the upper end in the vertical direction Z of the portion of the cylindrical body 3 where the opening 3a is formed is the upper end of the cylindrical body 3 in the vertical direction Z. By installing the neutron 4 inside the cylindrical body 3, a space is formed between the neutron 4 and the cylindrical body 3.

[0017] The cylindrical body 3 may be a cosmetic container 3 to which the rod-shaped cosmetic 2 is attached, or may be of a type different from the cosmetic container 3. In the first embodiment, the cosmetic container 3 is used as the cylindrical body 3.

[0018] (2) First filling process In the first filling process, as shown in Fig. 2(b), with the opening 3b on one end side in the axial direction of the cylindrical body 3 facing downward in the vertical direction, the molten second oily solid 22 is filled into the cylindrical body 3 from the upper opening 3a in the vertical direction of the cylindrical body 3. Also in the first filling process, it is more preferable that the angle formed by the axial direction and the vertical direction of the cylindrical body 3 is within 45 degrees, and it is even more preferable that the axial direction and the vertical direction of the cylindrical body 3 coincide. In the first embodiment, after the neutron installation process, the opening 3b of the cylindrical body 3 faces downward in the vertical direction, so there is no need to perform a process of turning the opening 3b of the cylindrical body 3 downward in the vertical direction prior to the first filling process. If the opening 3b of the cylindrical body 3 does not face downward in the vertical direction after the neutron installation process, a process of turning the opening 3b of the cylindrical body 3 downward in the vertical direction is performed prior to the first filling process.

[0019] Also, in the first filling step, the molten second oily solid 22 is filled into the inside of the cylindrical body 3 until it exceeds the upper end of the core 4 in the vertical direction Z. In the first embodiment, the upper end of the core 4 in the vertical direction Z is the tip of the core 4. The upper end of the filled second oily solid 22 in the vertical direction Z becomes a portion 22a located on the tip side of the second oily solid 22 of the rod-shaped cosmetic 2 to be manufactured.

[0020] In the first embodiment, the core 4 has a hollow cylindrical shape. Also, the core 4 has openings 4a and 4b at both ends in the axial direction of the core 4. Further, the core 4 has a communication passage 41 that communicates the openings 4a and 4b with each other. The communication passage 41 is a communication passage that communicates the space A between the core 4 and the second oily solid 22 that occurs when the core 4 is pulled out and the space D located on the opposite side of the space A across the core in the axial direction of the cylindrical body 3 (see Fig. 2(c)). In Fig. 2(c), the space D is located below the core 4 in the vertical direction. In the first filling step, it is preferable to block at least a part of the communication passage 41 of the core 4. By doing so, when the second oily solid 22 is filled into the cylindrical body 3, it is possible to prevent the second oily solid 22 from entering the communication passage 41 of the core 4. In the first embodiment, the blocking of the communication passage 41 is specifically performed by blocking at least a part of the communication passage 41 with a plug member 5, that is, by blocking the opening 4a facing the space A in the communication passage 41 with the plug member 5. Note that, instead of the opening 4a of the communication passage 41, or together with the opening 4a, the opening 4b and / or the middle of the communication passage 41 may be blocked with the plug member 5.

[0021] In the first embodiment, it is preferable to have a middle plate installation step of installing a middle plate 32 for fixing the rod-shaped cosmetic 2 inside the cylindrical body 3 prior to filling the molten second oily solid 22. For example, prior to installing the core 4 inside the cylindrical body 3, or simultaneously with installing the core 4 inside the cylindrical body 3, the middle plate 32 is installed inside the cylindrical body 3. By doing so, when the filled second oily solid 22 solidifies, the second oily solid 22 will be fixed to the middle plate 32, so it becomes easy to manufacture the rod-shaped cosmetic 2 fixed to the cosmetic container 3 via the middle plate 32. In the present embodiment, the middle plate 32 is installed near the opening 3b on one end side in the axial direction Z of the cylindrical body 3. The core 4 is installed inside the middle plate 32.

[0022] (3) Core pulling step In the core pulling step, as shown in Fig. 2(c), the core 4 is pulled out from inside the cylindrical body 3. Specifically, the core 4 is pulled out toward the opening 3b side on one end side in the axial direction Z of the cylindrical body 3. The opening 3b is the opening blocked by the core 4 in the core installation step. By pulling out the core 4, a space having a complementary shape to the shape of the core 4 is formed inside the second oily solid 22. In the first embodiment, prior to extracting the core 4, it is preferable to release the closed state of the communication path 41 of the core 4. By doing so, when the core 4 is extracted, air flows into the space A surrounded by the core 4 and the second oily solid 22 from the space D through the communication path 41, so that it is possible to prevent the space A from being depressurized. Since it becomes difficult for the space A to be depressurized, the extraction of the core 4 becomes easier, and the second oily solid 22 surrounding the space A is pulled toward the space A side, preventing the second oily solid 22 from collapsing or sinking. In the first embodiment, when the core 4 is installed in the cylindrical body 3 before filling the melted second oily solid 22, at least a part of the communication path 41 is blocked by the plug member 5, but the blocking of the communication path 41 may be performed at any stage before, after, or during the installation of the core 4 in the cylindrical body 3. In the first embodiment, the closed state of the communication path 41 is released by completely pulling out the plug member 5 from the communication path 41, but the closed state of the communication path 41 may also be released by partially pulling out the plug member 5 from the communication path 41.

[0023] The communication path 41 preferably has a portion that communicates the space that was blocked between the plug member 5 and the second oily solid 22 and the space D when the closed state of the communication path 41 is released, more specifically, when the plug member 5 is pulled out. By having such a portion, when the closed state of the communication path 41 is released, it is possible to prevent the second oily solid 22 from collapsing or sinking due to the depressurization of the blocked space. In the first embodiment, with the opening 4a of the communication path 41 of the core 4 facing the second oily solid 22 blocked by the plug member 5, a space communicating with the space D is provided in a part of the communication path 41. This space communicates the space (opening 4a) that was blocked between the plug member 5 and the second oily solid 22 and the space D when the plug member 5 is pulled out.

[0024] The plug member 5 used in the first embodiment includes an insertion portion 51 into the communication passage 41 inserted into the communication passage 41. The insertion portion 51 into the communication passage is arranged in the communication passage 41 to reduce the volume in the communication passage 41. As a result, the amount of air in the communication passage 41 heated during the filling of the second oily solid 22 is reduced, so that the deformation and air bubble mixing of the second oily solid 22 due to the discharge of this air through the opening 4a can be prevented. Further, the plug member 5 of the first embodiment has a tip-side closing portion 51a that closes the opening 41a of the communication passage 41 at the tip of the insertion portion 51 into the communication passage. Thereby, the discharge of the air through the opening 4a can be suppressed.

[0025] (4) Rotation step In the rotation step, as shown in FIG. 2(d), the cylindrical body 3 is rotated so that the opening 3b on one end side in the axial direction Z of the cylindrical body 3 faces upward in the vertical direction and the opening 3a on the other end side in the axial direction Z of the cylindrical body 3 faces downward in the vertical direction. In other words, the cylindrical body 3 is rotated so that the up and down in the vertical direction Z is reversed. From the viewpoint of facilitating the filling of the first oily solid 21 in the second filling step subsequent to the rotation step, the angle formed by the axial direction of the rotated cylindrical body 3 and the vertical direction is preferably within 45 degrees, and it is more preferable that the axial direction of the cylindrical body 3 coincides with the vertical direction. In FIG. 2(d), the vertical direction coincides with the axial direction Z of the cylindrical body 3, but they do not have to coincide. The mode in which the axial direction of the cylindrical body 3 coincides with the vertical direction includes not only the case where the axial direction of the cylindrical body 3 completely coincides with the vertical direction but also the case where the axial direction of the cylindrical body 3 substantially coincides with the vertical direction.

[0026] (4) Second filling step In the second filling step, as shown in FIG. 2(e), the molten first oily solid 21 is filled from the opening 3b on one end side in the axial direction Z of the cylindrical body 3. The opening 3b on one end side in the axial direction Z of the cylindrical body 3 faces upward in the vertical direction Z. The molten first oily solid 21 is filled into the recess 22c of the second oily solid 22 formed by withdrawing the core 4. The recess 22c of the second oily solid 22 is a space formed by withdrawing the core 4 in the core withdrawal step and having a complementary shape to the shape of the core 4. In the second filling step, the recess 22c of the second oily solid 22 has an opening 22d on the upper side in the vertical direction Z. The lower end portion of the filled first oily solid 21 in the vertical direction Z becomes one end 21a of the first oily solid 21 in the rod-shaped cosmetic 2. Also, the upper end portion of the filled first oily solid 21 in the vertical direction Z becomes the other end 21b of the first oily solid 21 in the rod-shaped cosmetic 2. In the first embodiment, the first oily solid 21 is filled so as to cover the upper end portion of the second oily solid 22 in the vertical direction Z. Then, the rod-shaped cosmetic 2 is completed by the solidification of the first oily solid 21 and the second oily solid 22. In this embodiment, since a cosmetic container is used as the cylindrical body 3, the cosmetic product 1 is completed together with the completion of the rod-shaped cosmetic 2.

[0027] According to the manufacturing method of the first embodiment, since the wide opening 3a of the cylindrical body 3 is used as the filling port when filling the second oily solid 22, the second oily solid 22 can be easily filled. Further, by filling the inside of the cylindrical body 3 with the melted second oily solid 22 until it exceeds the upper end of the core 4 in the vertical direction Z, the portion 22a on the tip side of the second oily solid 22 can be easily formed. The portion 22a on the tip side of the second oily solid 22 is a portion that covers one end 21a of the first oily solid 21 in the second oily solid 22. Also, according to the manufacturing method of the present embodiment, even if the second oily solid 22 is soft or thin, it can be easily molded, and regardless of the hardness and thickness of the second oily solid 22, it is easy to manufacture the rod-shaped cosmetic 2 having the designed layer structure. Further, for example, even if it is a rod-shaped cosmetic with a design such as decoration at the tip of the second oily solid 22, it is possible to manufacture a rod-shaped cosmetic with the designed surface shape. Also, in the manufacturing method of the present embodiment, since a cosmetic container is used as the cylindrical body 3, there is no need to perform the step of attaching the manufactured rod-shaped cosmetic 2 to the cosmetic container 3. Therefore, even when a soft one after solidification is used as the first oily solid 21 and the second oily solid 22, the shapes of the first oily solid 21 and the second oily solid 22 are not easily deformed. Thus, according to the manufacturing method of the present embodiment, it is possible to efficiently manufacture the rod-shaped cosmetic 2 composed of the first oily solid 21 and the second oily solid 22, and having a shape in which one end 21a of the first oily solid 21 is covered by the second oily solid 22.

[0028] In the first embodiment, it is preferable that the communication path 41 of the core 4 has an opening 4a facing a surface 22e located on the other end side in the axial direction of the cylindrical body 3 among the surfaces of the second oily solid 22 facing the core 4 when the molten second oily solid 22 is filled in the first filling step. This surface 22e is the bottom surface of the concave portion 22c of the second oily solid 22 and is the inner surface of a portion 22a that covers one end 21a of the first oily solid 21 in the second oily solid 22 of the manufactured rod-shaped cosmetic 2. The portion 22a of the second oily solid 22 having this surface 22e is a relatively thin portion that covers the upper end in the vertical direction of the core 4 in the first filling step. The portion 22a of the second oily solid 22 having the surface 22e is easily affected by the pressure reduction in the space A surrounded by the core 4 and the second oily solid 22 that occurs when the core 4 is pulled out. By the opening 4a of the communication path 41 of the core 4 facing the surface 22e, it is possible to effectively prevent the relatively thin portion 22a from collapsing or sinking among the portions of the second oily solid 22 that constitute the wall surface of the space A. Note that, by adjusting the diameter of the opening 4a and the composition of the second oily solid 22, a part of the bottom surface of the concave portion 22c, that is, the portion 22a of the second oily solid 22, may fall into the communication path 41 through the opening 4a within a range that does not affect the shape of the outer surface of the second oily solid 22 when the core 4 is pulled out.

[0029] In the first embodiment, a cosmetic container is used as the cylindrical body 3. However, as the cylindrical body 3, as shown in FIG. 3, a molding die can also be used. The molding die 3 shown in FIG. 3 is configured to include two split dies that can be combined and separated, and forms a cylindrical shape with openings 3a and 3b formed at both ends in the axial direction Z in the state where the die is closed. By using a molding die as the cylindrical body 3, the degree of freedom in the shape of the manufactured rod-shaped cosmetic 2 can be improved.

[0030] The core 4 shown in Fig. 3 has a through-hole 4d at the proximal end as an opening of a communication path different from the communication path 41. Further, the plug member 5 shown in Fig. 3 has a proximal end closing portion 51b on the side opposite to the distal end closing portion 51a. When using the core 4 and the plug member 5 shown in Fig. 3, it is preferable to close the opening 4a of the communication path 41 of the core 4 with the distal end closing portion 51a of the plug member 5 and to close the through-hole 4d of the core 4 with the proximal end closing portion 51b. Then, when releasing the closed state of the communication path 41 of the core 4, it is preferable to remove the proximal end closing portion 51b of the plug member 5 from the through-hole 4d and also release the closed state of the communication path including the through-hole 4d. By doing so, the core 4 can be pulled out more easily, and it is possible to prevent the second oily solid 22 from collapsing or sinking. By performing the closing and release of both communication paths with the same plug member 5, the work efficiency can be improved.

[0031] Next, a second embodiment of the method for manufacturing an oily solid of the present invention will be described with reference to Fig. 4. Regarding the second embodiment, differences from the first embodiment will be described. Regarding points not particularly described, they are the same as those in the first embodiment, and the description of the first embodiment is applied as appropriate.

[0032] The manufacturing method of the second embodiment also includes a core installation step, a first filling step, a core extraction step, a rotation step, and a second filling step in this order, similar to the manufacturing method of the first embodiment. In the second embodiment, the order of filling the first oily solid 21 and the second oily solid 22 into the cylindrical body 3 is different from that in the first embodiment. Specifically, in the first filling step, the first oily solid 21 is filled, and in the second filling step, the second oily solid 22 is filled.

[0033] The core 4 used in the second embodiment has a hollow bottomed cylindrical shape having an opening 4b at one end in the axial direction of the core 4, as shown in Fig. 4(a). Further, the core 4 can be separated into a cylindrical main body portion 42 and a bottom portion 43. In the neutron installation process, the neutron 4 is installed in the cylindrical body 3 with the opening 4b side of the neutron 4 facing the opening 3b side on the other end side in the axial direction Z of the cylindrical body 3. In the second embodiment, the other end side in the axial direction Z of the cylindrical body 3 is the proximal end side in the cosmetic product 1 to be manufactured. From the viewpoint of facilitating the filling of the first oily solid 21 in the first filling process following the neutron installation process, in the state where the neutron 4 is installed in the cylindrical body 3, it is preferable that the opening 3a on one end side in the axial direction of the cylindrical body 3 faces downward in the vertical direction. At this time, it is more preferable that the angle formed by the axial direction of the cylindrical body 3 and the vertical direction is within 45 degrees, and it is even more preferable that the axial direction of the cylindrical body 3 coincides with the vertical direction. After the opening 3a of the cylindrical body 3 faces downward in the vertical direction, the neutron 4 may be installed in the cylindrical body 3, or after the neutron 4 is inserted into the cylindrical body 3, the opening 3a of the cylindrical body 3 may be directed downward in the vertical direction. In the second embodiment, the bottom surface portion 41c inside the neutron 4 may be located above the lower end of the cylindrical body 3 or below the lower end of the cylindrical body 3 in the vertical direction Z.

[0034] In the first filling process, as shown in FIG. 4(b), the first oily solid 21 is filled into the neutron 4 from the opening 3b on the other end side in the axial direction of the cylindrical body 3 with the opening 3a on one end side in the axial direction of the cylindrical body 3 facing downward in the vertical direction. Also in the first filling process, it is more preferable that the angle formed by the axial direction of the cylindrical body 3 and the vertical direction is within 45 degrees, and it is even more preferable that the axial direction of the cylindrical body 3 coincides with the vertical direction. In the second embodiment, after the neutron installation process, since the opening 3a of the cylindrical body 3 faces downward in the vertical direction, it is not necessary to perform a process of directing the opening 3a of the cylindrical body 3 downward in the vertical direction prior to the first filling process. If the opening 3a of the cylindrical body 3 does not face downward in the vertical direction after the neutron installation process, a process of directing the opening 3a of the cylindrical body 3 downward in the vertical direction is performed prior to the first filling process.

[0035] Also, in the first filling step, the first oily solid 21 is filled into the inside of the core 4 through the opening 4b of the core 4. In the first filling step, it is preferable to fill the first oily solid 21 such that the upper end in the vertical direction of the filled first oily solid 21 reaches the opening 3b of the cylindrical body 3. By doing so, when the first oily solid 21 solidifies, the other end 21b which is the upper end in the vertical direction of the first oily solid 21 is fixed to the opening 3b of the cylindrical body 3, and when the core 4 is pulled out in the core pulling step, the first oily solid 21 can be left in the cylindrical body 3. The upper end in the vertical direction of the first oily solid 21 in the first filling step, that is, the other end 21b of the first oily solid 21, becomes the base end side in the rod-shaped cosmetic 2 to be manufactured.

[0036] In the core pulling step, as shown in FIG. 4(c), the core 4 is pulled out toward the opening 3a on one end side in the axial direction of the cylindrical body 3. The opening 3a of the cylindrical body 3 is the opening on the side where the bottom of the core 4 is directed. In the core pulling step according to the second embodiment, it is preferable to first remove the bottom 43 of the core 4 and then pull out the main body 42 of the core 4 toward the opening 3a side of the cylindrical body 3. By doing so, it is difficult for the space between the core 4 and the first oily solid 21 to become negative pressure, and it is possible to prevent the first oily solid 21 from collapsing or sinking. In addition, when the core 4 is installed in the core installation step such that the inner bottom surface portion 41c of the core 4 is located below the lower end of the cylindrical body 3 in the vertical direction Z, the lower end portion in the vertical direction Z of the solidified first oily solid 21 will protrude from the opening 3a of the cylindrical body 3. In this case, for example, the lower end portion of the first oily solid 21 is shaved so that one end 21a of the first oily solid 21 does not protrude from the opening 3a of the cylindrical body 3.

[0037] The rotation step is performed in the same manner as in the first embodiment. In the rotation step according to the second embodiment, the cylindrical body 3 is rotated such that the opening 3a on one end side in the axial direction of the cylindrical body 3 faces upward in the vertical direction Z and the opening 3b on the other end side in the axial direction of the cylindrical body 3 faces downward in the vertical direction Z (see FIG. 4(d)). In other words, the cylindrical body 3 is rotated so that the upper and lower sides in the vertical direction Z are reversed.

[0038] In the second filling step, the second oily solid 22 is filled into the space between the solidified first oily solid 21 obtained by extracting the neutron 4 and the cylindrical body 3 until it exceeds the upper end of the first oily solid 21 in the vertical direction Z, that is, one end 21a of the first oily solid 21. The upper end in the vertical direction of the first oily solid 21 in the second filling step, that is, one end 21a of the first oily solid 21, is located on the tip side of the produced rod-shaped cosmetic 2. By filling the second oily solid 22 in this way, one end 21a of the first oily solid 21 is covered with the second oily solid 22. Then, when the first oily solid 21 and the second oily solid 22 are solidified, the rod-shaped cosmetic 2 is completed. Also in the second embodiment, since a cosmetic container is used as the cylindrical body 3, the cosmetic product 1 is completed along with the completion of the rod-shaped cosmetic 2.

[0039] According to the manufacturing method of the second embodiment, similar to the manufacturing method of the first embodiment, a rod-shaped cosmetic 2 having a shape composed of the first oily solid 21 and the second oily solid 22 and having one end 21a of the first oily solid 21 covered with the second oily solid 22 can be efficiently manufactured. Further, in the manufacturing method of the second embodiment, since no negative pressure is applied to the inner surface (the surface in contact with the first oily solid 21) of the second oily solid 22 from the second filling step until the completion of the rod-shaped cosmetic 2, the shape of the second oily solid 22 is less likely to collapse. Also, since the second oily solid 22 located outside is formed after the first oily solid 21 located inside is formed, even when the melting point of the first oily solid 21 is higher than the melting point of the second oily solid 22, the boundary between the first oily solid 21 and the second oily solid 22 can be made clear. By making the solidified first oily solid 21 relatively hard and the solidified second oily solid 22 relatively soft, it is also possible to manufacture a rod-shaped cosmetic 2 that is difficult to break when used and has an excellent feel when touching the user's skin.

[0040] In the neutron installation process according to the second embodiment, it is preferable to install the neutron 4 so that a gap B is formed between the inner surface of the cylindrical body 3 and the outer surface of the neutron 4 (see Fig. 4(a)). By doing so, when pulling out the neutron 4, the friction between the neutron 4 and the cylindrical body 3 can be reduced, so that the neutron 4 can be easily pulled out. For example, the gap B may be formed by arranging a spacer between the cylindrical body 3 and the neutron 4, or the gap B may be formed by providing irregularities on the outer peripheral surface of the neutron 4. From the viewpoint of reducing the friction, it is preferable that the total of the ranges of the gap B in the circumferential direction around the axis of the neutron 4 is 25% or more, more preferably 50% or more, and even more preferably 75% or more. From the same viewpoint, it is preferable that the total of the ranges of the gap B in the axial direction of the neutron 4 is 25% or more, more preferably 50% or more, and even more preferably 75% or more.

[0041] In the second embodiment, prior to installing the neutron 4 into the cylindrical body 3 or simultaneously with installing the neutron 4 into the cylindrical body 3, it is preferable to have a middle plate installation process of installing a middle plate 32 for fixing the rod-shaped cosmetic 2 into the cylindrical body 3. When having the middle plate installation process, in the neutron installation process, it is preferable to install the neutron 4 inside the middle plate 32. By doing so, a gap B is formed between the neutron 4 and the cylindrical body 3, so that the neutron 4 can be easily pulled out. In the second embodiment, the middle plate 32 is installed near the opening 3b on the proximal end side of the cylindrical body 3.

[0042] In the second embodiment, a cosmetic container is used as the cylindrical body 3, but as the cylindrical body 3, as shown in Fig. 5, a molding die can also be used. The molding die 3 shown in Fig. 5 is composed of two split dies capable of closing and opening the mold, and forms a cylindrical shape with openings 3a and 3b formed at both ends in the axial direction Z in the mold-closed state. By using a molding die as the cylindrical body 3, the degree of freedom in the shape of the manufactured rod-shaped cosmetic 2 can be improved.

[0043] The core 4 shown in Fig. 5 has through-holes 4c and 4d as openings of the communication passages at the proximal end side and the distal end side, respectively. When using the core 4 shown in Fig. 5, in the first filling step, it is preferable to block the through-holes 4c and 4d of the core 4 (see Fig. 5(a)). By doing so, when filling the second oily solid 22 into the cylindrical body 3, it is possible to prevent the second oily solid 22 from leaking out through the through-holes 4c and 4d of the core 4. Fig. 5 shows a state in which the through-hole 4d of the core 4 is blocked by the distal end side closing portion 51a of the plug member 5, and the through-hole 4c of the core 4 is blocked by the proximal end side closing portion 51b. The blocking of the through-holes 4c and 4d may be performed at any stage before, after, or during the installation of the core 4 into the cylindrical body 3, as long as it is before filling the molten first oily solid 21.

[0044] When using the core 4 shown in Fig. 5, prior to pulling out the core 4, it is preferable to release the blocked state of the through-holes 4c and 4d of the core 4. By doing so, when pulling out the core 4, air flows into the space C surrounded by the core 4 and the first oily solid 21 through the through-holes 4c and 4d, so that it is possible to prevent the space C from being depressurized (see Fig. 5(b)). Since it becomes difficult for the space C to be depressurized, it is possible to prevent the first oily solid 21 surrounded by the space C from being pulled toward the space C side and the first oily solid 21 from collapsing or sinking. The through-hole 4c is an opening of the communication passage facing the surface located on the other end side (the side of the opening 3b) in the axial direction of the cylindrical body 3 among the surfaces of the first oily solid 21 facing the core 4 when the molten first oily solid 21 is filled in the first filling step. By the through-hole 4c facing the said (side of the opening 3b) surface, it is possible to effectively prevent the relatively thin part among the parts of the first oily solid 21 constituting the wall surface of the space C from collapsing or sinking.

[0045] Next, a preferable configuration common to the first and second embodiments will be described. The manufacturing methods of the first and second embodiments may include a cooling step. The cooling step includes a cooling step of forcibly cooling the first oily solid 21 or the second oily solid 22 after the first filling step to promote the solidification of the first oily solid 21 or the second oily solid 22, and a cooling step of forcibly cooling the first oily solid 21 or the second oily solid 22 after the second filling step to promote the solidification of the first oily solid 21 or the second oily solid 22. By having the cooling step, the solidification of the first or second oily solid 21, 22 is promoted, preventing the first or second oily solid 21, 22 from collapsing or sinking and causing defects in the first or second oily solid 21, 22, and enabling the easy manufacture of the rod-shaped cosmetic 2 without defects. The manufacturing methods of the first and second embodiments may have either one or both of the above two cooling steps. In the cooling step, as means for forcibly cooling the first or second oily solid 21, 22, arranging the cylindrical body 3 filled with the first or second oily solid 21, 22 in a low-temperature space, blowing cold air onto the first or second oily solid 21, 22, or cooling the cylindrical body 3 itself filled with the first or second oily solid 21, 22 by applying cold air, cold water, or a cooling plate, etc. can be mentioned.

[0046] When using a mold as the cylindrical body 3, examples of the mold material include metals, synthetic resins, ceramics, wood, natural rubbers, elastomers such as synthetic rubbers and silicone rubbers, and combinations of two or more of these of the same or different types, etc. Among these, from the viewpoints of heat resistance, durability, peelability of the oily solid, and workability, it is preferable to use metals, synthetic resins, synthetic rubbers, elastomers such as silicone rubbers, etc. When using a mold made of an elastomer, when removing the mold, the mold can be opened by applying a negative pressure to the periphery of the mold, and the mold can be removed from the solidified bodies of the first oily solid 21 and the second oily solid 22.

[0047] Examples of the material constituting the neutron 4 include metals, synthetic resins, ceramics, wood, natural rubber, synthetic rubber, elastomers such as silicone rubber, and combinations of two or more of these, whether of the same or different types. Among these, from the viewpoints of heat resistance, durability, peelability of the oily solid, and processability, it is preferable to use metals, synthetic resins, synthetic rubbers, elastomers such as silicone rubber, etc.

[0048] Examples of the material constituting the plug member 5 include metals, synthetic resins, ceramics, wood, natural rubber, synthetic rubber, elastomers such as silicone rubber, and combinations of two or more of these, whether of the same or different types. Among these, from the viewpoints of sealing performance, heat resistance, durability, peelability of the oily solid, and processability, it is preferable to use metals, synthetic resins, synthetic rubbers, elastomers such as silicone rubber, etc.

[0049] The constituent materials of the first and second oily solids 21 and 22 will be described. As the constituent materials of the first and second oily solids 21 and 22 respectively, various conventionally used materials can be used without particular limitation according to the use of the oily solid. The first oily solid 21 and the second oily solid 22 are preferably oily solid compositions having different properties. Here, the oily solid compositions having different properties mean that at least one or more of various properties and effects such as color tone, taste, fragrance, hardness, volatility, ultraviolet protection effect, moistening effect, and persistence effect of the coating film are made different. Among them, it is preferable that they are oily solid compositions having different color tones and hardnesses.

[0050] The first oily solid 21 and the second oily solid 22 may have the same color tone or different color tones, but from the viewpoint of improving the designability of the stick cosmetic 2, it is preferable that they have different color tones. Having different color tones means that any one or more of hue, lightness, chroma, and transparency are different. As a method of making the color tones different, there are methods such as blending different types of pigments, dyes, and oil agents into the first oily solid 21 and the second oily solid 22, or blending pigments or dyes into only one of the first oily solid 21 and the second oily solid 22, etc., but it is not limited to these and various methods can be used.

[0051] Examples of the mode of making the first oily solid 21 and the second oily solid 22 different from each other in aspects other than the color tone include, for example, (1) a mode in which the fragrance of the first oily solid 21 is a fragrance different from the fragrance of the second oily solid 22, (2) a mode in which the hardness of the first oily solid 21 is made harder than the hardness of the second oily solid 22, (3) a mode in which the solvent of the first oily solid 21 is a solvent with higher volatility than the solvent of the second oily solid 22, and the like. According to the mode (1) above, for example, an effect such as being able to enjoy the change in fragrance during use can be obtained. According to the mode (2) above, for example, even the second oily solid 22 with a softness that is difficult to mold alone can be molded by using the harder first oily solid 21 as a core material. According to the mode (3) above, for example, an effect such as being able to suppress the volatilization of the solvent of the first oily solid with high volatility until use can be obtained.

[0052] As an example of the oily composition constituting the first and second oily solids 21 and 22, preferably, in a cosmetic in which the continuous layer is an oil agent, powders such as pigments are dispersed, and it is solid or paste-like at 25°C, and preferably liquid at 50°C to 150°C. Also, the first and second oily solids 21 and 22 preferably contain 10% by mass or more and 100% by mass or less of an oil agent, more preferably 25% by mass or more and 96% by mass or less, in the total amount of the first and second oily solids 21 and 22.

[0053] As the oil agent, there are mineral waxes such as ozokerite and ceresin; petroleum waxes such as paraffin and microcrystalline wax; synthetic hydrocarbons such as Fischer-Tropsch wax and polyethylene wax; vegetable waxes such as carnauba wax, candelilla wax, rice wax, sunflower wax, hydrogenated jojoba oil, and beeswax; animal waxes such as beeswax and whale wax; waxes such as silicone wax, synthetic beeswax, and synthetic beeswax; oil gelling agents such as dextrin palmitate, sucrose fatty acid ester, inulin stearate, 12-hydroxystearic acid, dibutyl lauroyl glutamide, dibutyl ethylhexanoyl glutamide, and polyamide resin; paste oils such as petrolatum, vinyl leather wax, hexakis(behenic acid / benzoic acid / ethylhexanoic acid) dipentaerythrityl, cholesteryl hydroxystearate, tetrakis(hydroxystearic acid / isostearic acid) dipentaerythrityl, hydrogenated palm oil, hexahydroxystearic acid dipentaerythrityl, tris(caprylic acid / capric acid / myristic acid / stearic acid) glyceryl, hexakis(hydroxystearic acid / stearic acid / rosin acid) dipentaerythrityl, phytosteryl oleate, glyceryl (ethylhexanoic acid / stearic acid / adipic acid), di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), dimer dilinoleic acid dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl), hard lanolin, reduced lanolin, bisdiglyceryl polyacyl adipate-2, etc.; linear or branched hydrocarbon oils such as liquid paraffin, light liquid isoparaffin, heavy liquid isoparaffin, mineral oil, squalane, α-olefin oligomer, polyisobutylene, polybutene, hydrogenated polyisobutylene, and hydrogenated polydecene;Isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, tricyclodecanemethyl isononanoate, ethyl isostearate, isobutyl isostearate, isopropyl isostearate, 2-hexyldecyl isostearate, di-2-ethylhexyl succinate, bis(ethoxydiglycol) succinate, hexyl laurate, di(caprylic / capric acid) propanediol, neopentyl glycol diisononanoate, neopentyl glycol dicaprate, glyceryl diisostearate, polyglyceryl diisostearate, propanediol diisostearate, trimethylolpropane triisostearate, glyceryl triisostearate, diglyceryl triisostearate, diglyceryl tetraisostearate, diisostearyl malate, octyldodecyl malate, glycerin fatty acid ester, jojoba oil, di(phytosteryl / octyldodecyl) lauroyl glutamate, octyldodecyl myristate, isopropyl myristate, 2-ethylhexyl palmitate, isopropyl palmitate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, octyldodecyl myristate, 2-hexyldecyl myristate, 2-hexyldecyl 2-ethylhexanoate, neopentyl glycol di-2-ethylhexanoate, ethylhexyl hydroxystearate, glyceryl tri(caprylic / capric acid), glyceryl trioctanoate, neopentyl glycol dioctanoate, tritridecyl trimellitate, dipentaerythrityl tetraisostearate, pentaerythritol tetraisostearate, octyl methoxycinnamate, 2-ethylhexyl paramethoxycinnamate, diisopropyl dimer acid, propylene carbonate and other ester oils; higher alcohols such as lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol, octyldodecanol; silicone oils such as dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, trimethylpentaphenyltrisiloxane, methylhydrogenpolysiloxane, higher alcohol-modified organopolysiloxane;Fluorinated oils such as fluoropolyethers, perfluoroalkyl ether silicones, and fluorine-modified silicones; phenoxyethanol and the like can be mentioned. Each of the above-mentioned various oil agents can be used alone or in combination of two or more kinds.

[0054] As the powder, various powders conventionally used in cosmetics can be used without particular limitation, and can be either inorganic powders or organic powders, or inorganic powders and organic powders can be used in combination. Also, the powder can be either plate-shaped powder or granular powder. Examples of the powder contained in the first and second oily solids 21 and 22 include pigments such as coloring pigments, lustrous pigments, and extender pigments for imparting color, and oil-soluble dyes, etc. These can be blended alone or in combination of two or more kinds. It goes without saying that the compositions of the first oily solid 21 and the second oily solid 52 may be different. The first and second oily solids 21 and 22 preferably contain 0.001% by mass or more and 90% by mass or less of the powder in the total amount of the first and second oily solids 21 and 22, more preferably 0.2% by mass or more and 45% by mass or less.

[0055] The rod-shaped cosmetic 2 produced by the production method of the present invention can be used by being attached to the cosmetic container 3 as described above. Regarding the cosmetic container 3 shown in FIGS. 1 and 6, the cosmetic container 3 includes a cylindrical inner dish 32 having an accommodation space for accommodating the base end portion 2b of the rod-shaped cosmetic 2, and an outer cylinder 31 for accommodating the inner dish 32. On the inner peripheral surface of the inner dish 32, a protrusion 32a for fixing the base end portion 2b of the rod-shaped cosmetic 2 is provided. The inner dish 32 can be moved up and down in the outer cylinder 31 by holding the main body base portion 33 with one hand and rotating the outer cylinder 31 with the other hand.

[0056] As described above, the production method of the oily solid of the present invention has been described based on its preferred embodiments, but the production method of the oily solid of the present invention is not limited to the above-described embodiments. In the first and second embodiments, the rod-shaped cosmetic 2 is manufactured. However, the oily solid matter produced by the manufacturing method of the present invention is not limited to this. For example, it may be chocolate, antiperspirant, soap, candle, pharmaceutical, interior, toy, etc. As the first and second oily solid matters 21 and 22, appropriate ones can be used as appropriate according to the oily solid matter to be produced.

[0057] Also, in the first and second embodiments, the axial direction of the core 4 coincides with the axial direction of the cylindrical body 3. However, the axial direction of the core 4 may be inclined with respect to the axial direction of the cylindrical body 3.

Explanation of Reference Numerals

[0058] 1 Cosmetic product 2 Oily solid matter 21 First oily solid matter 22 Second oily solid matter 3 Cosmetic container (cylindrical body) 4 Core 5 Plug member Z-axis direction

Claims

1. A method for manufacturing an oily solid in which one end of a first oily solid is covered with a second oily solid, comprising: a neutron installation step of installing a neutron inside a hollow cylindrical body having openings at both axial ends; a first filling step of filling the inside of the cylindrical body with the molten second oily solid from the opening on the other end side in the axial direction of the cylindrical body with the opening on one end side in the axial direction of the cylindrical body facing downward in the vertical direction; a neutron extraction step of extracting the neutron from inside the cylindrical body to the opening side on the one end side in the axial direction of the cylindrical body; a rotation step of rotating the cylindrical body so that the opening on the one end side in the axial direction of the cylindrical body faces upward in the vertical direction and the opening on the other end side in the axial direction of the cylindrical body faces downward in the vertical direction; a second filling step of filling the inside of the cylindrical body with the molten first oily solid from the opening on the one end side in the axial direction of the cylindrical body, wherein in the neutron installation step, the neutron is installed so as to close the opening on the one end side in the axial direction of the cylindrical body and so that the neutron does not extend from the opening on the other end side in the axial direction of the cylindrical body; in the first filling step, the molten second oily solid is filled until it exceeds the upper end of the neutron in the vertical direction; in the second filling step, the first oily solid is filled into a recess of the second oily solid obtained by extracting the neutron in the neutron extraction step, the recess having an opening positioned on the upper side in the vertical direction in the rotation step. A method for manufacturing an oily solid.

2. A method for manufacturing an oily solid in which one end of a first oily solid is covered with a second oily solid, comprising: a neutron installation step of installing a neutron inside a hollow cylindrical body having openings at both axial ends; a first filling step of filling the inside of the neutron with the molten first oily solid from the opening on the other end side in the axial direction of the cylindrical body with the opening on one end side in the axial direction of the cylindrical body facing downward in the vertical direction; a neutron extraction step of extracting the neutron from inside the cylindrical body to the opening side on the one end side in the axial direction of the cylindrical body; a rotation step of rotating the cylindrical body so that the opening on the one end side in the axial direction of the cylindrical body faces upward in the vertical direction and the opening on the other end side in the axial direction of the cylindrical body faces downward in the vertical direction; a second filling step of filling the inside of the cylindrical body with the molten second oily solid from the opening on the one end side in the axial direction of the cylindrical body, The neutron has a hollow bottomed cylindrical shape with an opening at one end in the axial direction of the neutron, In the neutron installation step, the neutron is installed with the opening of the neutron facing the opening side on the other end side in the axial direction of the cylindrical body, In the first filling step, a first oily solid is filled into the neutron from the opening of the neutron, In the second filling step, a method for manufacturing an oily solid, wherein the second oily solid is filled until it exceeds the upper end in the vertical direction of the solidified first oily solid obtained by pulling out the neutron.

3. The method for manufacturing an oily solid according to claim 2, wherein in the neutron installation step, the neutron is installed such that a gap is formed between the inner surface of the cylindrical body and the outer surface of the neutron.

4. The bottom of the neutron is separable from the main body of the neutron, The method for manufacturing an oily solid according to claim 2 or 3, wherein in the neutron extraction step, after separating the bottom from the main body, the main body is pulled out.

5. The method for manufacturing an oily solid according to any one of claims 1 to 4, wherein the cylindrical body is a container for accommodating the oily solid.

6. Before installing the neutron into the cylindrical body, or simultaneously with installing the neutron into the cylindrical body, there is a middle plate installation step of installing a middle plate for fixing the oily solid into the cylindrical body, The method for manufacturing an oily solid according to claim 5, wherein in the neutron installation step, the neutron is installed inside the middle plate.

7. The neutron is, Comprises a communication passage that communicates the space between the neutron and the second oily solid generated when pulling out the neutron and the space located on the opposite side of the space across the neutron in the axial direction of the cylindrical body, or Has a bottomed cylindrical shape and comprises a communication passage that communicates the space between the neutron and the first oily solid generated when pulling out the neutron and the space located on the opposite side of the space across the bottom of the neutron in the axial direction of the cylindrical body. The method for manufacturing an oily solid according to any one of claims 1 to 6.

8. The communication passage according to claim 7 has an opening facing the surface located on the other end side in the axial direction of the cylindrical body among the surfaces of the first or second oily solid filled in the first filling step that face the neutron. The method for manufacturing an oily solid according to claim 7.

9. In the first filling step, at least a part of the communication passage is blocked, The method for producing an oily solid according to claim 7 or 8, wherein, prior to extracting the neutrons, the blockage of the communication passage is released.

10. The method for producing an oily solid according to claim 9, wherein the blockage of the communication passage is performed by blocking at least a part of the communication passage with a plug member.

11. The method for producing an oily solid according to any one of claims 1 to 10, wherein the oily solid to be produced is a cosmetic.

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