JPH0346670Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a mold for molding bar-shaped cosmetics, which is suitably used for molding bar-shaped cosmetics such as lipsticks, makeup sticks, etc. ,
The present invention relates to a mold for molding a bar-shaped cosmetic, which forms a so-called cut surface on the tip side of the bar-shaped cosmetic.

[Prior art]

FIG. 6 shows an example of a lipstick molding mold as a mold for molding rod-shaped cosmetics according to the prior art.

In the figure, reference numeral 1 denotes an asymmetrical cylindrical body constituting the main body of the mold. The cylindrical body 1 is made of a synthetic resin material such as styrene, high-impact styrene, AS, or ABS, and has a wall thickness of about 0.7 mm. It is formed with The cylindrical body 1 has a cylindrical portion 1B whose upper end side serves as a filling port 1A for a lipstick stock solution 3, which will be described later.
and a tapered closing part 1C that is integrally provided on the lower end side of the cylindrical part 1B to close the lower end side of the cylindrical part 1B. A flat inclined portion 1D is provided to form a cut surface 3A to be described later. Further, a flange 1E that is located on the radially outer side of the filling port 1A and projects in the radial direction is provided on the upper end side of the cylindrical portion 1B, and an annular stepped portion 1F is provided on the inner peripheral side of the filling port 1A. ing.

Reference numeral 2 indicates a red tray formed in a substantially cylindrical shape, and a small diameter portion 2A is provided at the lower end side of the red tray 2, and the small diameter portion 2A is removably fitted into the stepped portion 1F of the cylinder body 1. . Reference numeral 3 indicates a lipstick stock solution as a cosmetic raw material to be filled into the cylinder 1, and the lipstick stock solution 3 is injected into the cylinder 1 from above the red tray 2 through a filling nozzle (not shown) in a heated and molten state. The red tray 2 is filled until it reaches a predetermined height position. Then, the lipstick stock solution 3 is cooled and solidified in the cylinder 1 and molded into a rod-shaped lipstick, and a cut surface 3A is formed on the tip side of the rod-shaped lipstick by the inclined portion 1D of the cylinder 1. It's becoming like that.

The lipstick mold according to the prior art has the above-mentioned configuration, and when molding a stick-shaped lipstick, a plurality of cylindrical bodies 1 each having a red tray 2 attached thereto are attached to a holder (not shown) via a flange 1E. It is installed and transported sequentially to the filling process, cooling process, and extraction process using a conveyor or the like.

That is, each cylindrical body 1 is heated to a predetermined temperature in advance and transported to the filling process, and the lipstick stock solution 3 in a heated and molten state is filled into each cylindrical body 1 from above each red tray 2 using a filling nozzle. . Then, in the cooling step, each cylinder 1 is cooled from below using a cooling means such as air cooling, and the lipstick stock solution 3 is solidified to form a rod-shaped lipstick. Here, since the lipstick stock solution 3 slightly contracts when it solidifies, a small gap 4 under negative pressure is formed between it and the inner surface of the cylinder 1.
The gap 4 forms an air layer between the inner surface of the cylindrical body 1 and the rod-shaped lipstick by sucking outside air, thereby making it easier to peel off the rod-shaped lipstick from the cylindrical body 1. Next, in the extraction process, the rod-shaped lipstick is pulled upward from each cylindrical body 1 together with each red tray 2, and this rod-shaped lipstick is taken out from each cylindrical body 1.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional technology, since the cylinder 1 is formed in an asymmetrical shape and the flat inclined part 1D is provided on one side in the radial direction of the closing part 1C, it is difficult to fill the lipstick stock 3 into the cylinder 1. When cooling and solidifying,
The inclined portion 1D on one side in the radial direction is cooled quickly, and the other side is cooled slowly, making it difficult to uniformly cool the lipstick stock solution 3.

Therefore, in the prior art, when the lipstick stock solution 3 solidifies, one side contracts first to form a void 4 as shown by the two-dot chain line in FIG. 6, and the lipstick is sucked into the void 4. Due to the pressure of outside air, the cut surface 3A
The tip 3B on the other side that is radially opposed to the cylindrical body 1 comes to be crimped to the inner surface of the closed part 1C of the cylinder 1, which not only deteriorates the releasability but also causes the tip 3B to lose its shape when removed. There is a drawback.

The present invention was developed in view of the above-mentioned drawbacks of the conventional technology. The purpose of the present invention is to provide molds for molding materials.

[Means for solving problems]

The feature of the configuration adopted by the present invention in order to solve the above-mentioned problems is that a heat dissipation fin is provided protruding from the other side in the radial direction of the closed part of the asymmetric cylindrical body in order to uniformly cool the cosmetic raw material. be.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. In the embodiment, the same components as those of the prior art shown in FIG. 6 described above are given the same reference numerals, and their explanations will be omitted.

1 and 2 show a first embodiment of the present invention.

In the figure, reference numerals 11, 11, . . . indicate vertical rib-shaped heat dissipation fins integrally protruding from the outer surface of the cylinder 1, and each of the heat dissipation fins 11 faces the inclined portion 1D of the closed portion 1C in the radial direction. It is located on the other side, extends in the axial direction from the lower end of the closing portion 1C along the outer peripheral surface of the cylindrical portion 1B, and is integrally connected to the lower surface of the flange 1E. Each heat dissipation fin 11 has, for example, 60
Three protrusions are formed in the radial direction of the cylinder 1 with an angular interval of about 100 degrees, and the outer shape is such that the lower end side is the corner 11A.
It is formed into a substantially L-shape. Further, the wall thickness of each of the heat dissipating fins 11 is formed to be as thin as possible, so that the heat of the lipstick liquid 3 filled in the cylinder body 1 can be efficiently dissipated to the outside.

The lipstick mold according to this embodiment has the configuration described above, and its basic operation is not particularly different from that of the prior art.

However, in this embodiment, three heat radiation fins 11 are provided on the outer surface of the cylinder 1 and extend in the axial direction from the other side of the closed part 1C to the cylinder part 1B. Since the heat of the lipstick liquid 3 filled in the cylinder body 1 is radiated to the outside, when the lipstick liquid liquid 3 in the cylinder body 1 is cooled and solidified in the cooling process, the radial direction of the cylinder body 1 is not aligned as in the conventional technology. The side of the inclined part 1D located on the side can be cooled quickly, and the other side can be prevented from being cooled slowly, and the lipstick stock solution 3 can be cooled quickly and uniformly. In particular, each heat dissipation fin 11
is formed into a substantially L-shape with a corner 11A on the lower end side, and the heat dissipation area on the other side of the closing portion 1C is increased by the corner 11A, so that the lipstick stock solution 3 is poured into the closed cylinder 1. It becomes possible to uniformly solidify and shrink the portion 1C side, and it is possible to prevent the tip portion 3B (see FIG. 6) from being pressed against the inner surface of the closing portion 1C as in the prior art.

Therefore, according to this embodiment, when the lipstick stock solution 3 filled in the cylinder body 1 is cooled and solidified, it can be uniformly shrunk to improve peelability, and the lipstick stock solution 3 that is filled in the cylinder body 1 can be uniformly shrunk to improve the peelability, thereby preventing the lipstick from losing its shape when being pulled out. can be reliably prevented.

FIGS. 3 and 4 show a second embodiment of the present invention, and the feature of this embodiment is that an annular heat dissipation fin 2 is provided on the cylindrical portion 1B of the cylindrical body 1 and extends over the entire circumference in the circumferential direction.
1.21, . . . are integrally provided at predetermined intervals in the axial direction, and vertical rib-shaped heat dissipation fins 22, 22, . be.

Here, three of the heat radiation fins 22 are located on the other side of the closing part 1C facing the inclined part 1D, and are formed to protrude in the radial direction with an angular interval of, for example, about 60 degrees. Each heat dissipation fin 22 is formed into a substantially L-shape with a corner 22A at its lower end, and its upper end is integrally connected to the lower surface of the lowest heat dissipation fin 21. In addition, each heat radiation fin 21, 22
is formed to be as thin as possible, and is designed to efficiently radiate the heat of the lipstick liquid 3 filled in the cylinder 1 to the outside.

Thus, in this embodiment configured in this way, it is possible to obtain almost the same effects as in the first embodiment, but in particular, in this embodiment, the cylindrical portion 1B of the cylinder 1 is provided with a Since a plurality of annular heat dissipating fins 21 extending over
can be cooled and solidified more quickly.

FIG. 5 shows a third embodiment of the present invention, and the feature of this embodiment is that, like the first embodiment, vertical rib-like heat dissipation fins 11, 11, . In addition, metal thin film layers 31 and 32 are provided on the inner and outer surfaces of the cylindrical body 1, respectively.

Here, each of the metal thin film layers 31 and 32 is formed by depositing a metal material such as copper, aluminum, chromium, stainless steel, or titanium nitride onto the cylindrical body using means such as vacuum evaporation, sputtering, or ion plating.
By closely contacting the inner and outer surfaces of the cylindrical body 1, it is formed to have a thickness of approximately 500 Å (angstroms), and covers the inner and outer surfaces of the cylindrical body 1. The outer metal thin film layer 32 covers each heat dissipation fin 11, and each metal thin film layer 32 improves the thermal conductivity of the cylindrical body 1.

Thus, in this embodiment configured in this way, it is possible to obtain almost the same effects as in the first embodiment, but in particular, in this embodiment, metal is provided on the inner and outer surfaces of the cylinder 1, respectively. thin film layer 31,
32, the heat conductivity can be increased, the lipstick stock solution 3 can be cooled and solidified more quickly, and the releasability can be further improved. Further, the strength of the cylinder 1 can be increased by the metal thin film layers 31 and 32, and not only can it be reused for a long period of time, but also it is possible to further reduce the thickness of the cylinder 1. Furthermore, by utilizing the oil repellency of metal, the inner metal thin film layer 31 can prevent the lipstick stock solution 3 from adhering to the inner surface of the cylinder 1, and the rod-shaped lipstick molded within the cylinder 1 can be prevented from sticking to the inner surface of the cylinder 1. 1 can be easily released from the mold.

In the third embodiment, the metal thin film layers 31 and 32 are provided on the inner and outer surfaces of the cylinder 1, respectively.
Depending on the viscosity of the lipstick stock solution 3, only one of them may be used and the other may be omitted. Also,
The radiation fins 21 and 22 described in the second embodiment may also be covered with a metal thin film layer 32 provided on the outer surface of the cylinder 1, similarly to the third embodiment.

Further, in the first and second embodiments, the cylinder body 1 was described as being made of a synthetic resin material, but instead of this, the cylinder body 1 was formed with heat dissipating fins 11.
Of course, they may be formed of metal materials together with (21, 22).

Furthermore, in the second embodiment, vertical rib-shaped heat dissipation fins 22, 22,
... has been described as being protrudingly provided, but instead of this, each heat dissipating fin may be protrudingly provided at a predetermined interval above and below so as to extend in the circumferential direction on the other side of the closing portion 1C.

Furthermore, in each of the above embodiments, the lipstick mold was used as an example, but the present invention is not limited thereto, and can be applied to various rod-shaped cosmetic molds such as makeup sticks. It is something.

[Effect of idea]

As detailed above, according to the present invention, heat dissipation fins are provided protruding from the other side in the radial direction of the closed part of the asymmetrical cylinder in order to uniformly cool the cosmetic raw material. When cooling and solidifying the molten cosmetic raw material, it is possible to prevent the slope part side located on one radial side of the closed part from being cooled quickly and the other side being cooled slowly as in the conventional technology. Can be shrunk uniformly. Therefore, it is possible to improve the peelability after molding the bar-shaped cosmetic, and it is possible to reliably prevent the cosmetic from deforming when being pulled out.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a lipstick mold, and FIG.
The figure is an enlarged sectional view in the direction of the arrow in Figure 1,
3 and 4 show the second embodiment, FIG. 3 is a longitudinal sectional view of the lipstick mold, FIG. 4 is a bottom view of FIG. 3, and FIG. 5 is the third embodiment. FIG. 6 is an enlarged sectional view similar to FIG. 2, and a vertical sectional view showing a conventional lipstick mold. 1... Cylindrical body, 1A... Filling port, 1B... Cylindrical part, 1C... Closing part, 1D... Inclined part, 11, 2
1, 22... Heat dissipation fin.

Claims (1)

[Scope of utility model registration request] A rod-shaped cosmetic molding consisting of an asymmetrical cylindrical body, the upper end of which serves as a filling port for heated and melted cosmetic raw materials, the lower end of which serves as a tapered closed part, and a flat inclined part formed on one radial side of the closed part. 1. A rod-shaped cosmetic molding mold, characterized in that a heat dissipation fin is provided protruding from the other radial side of the closing portion in order to uniformly cool the cosmetic raw material.