JPH10179250A - Bar-shaped cosmetic molding tool and rod-shaped cosmetic molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rod-shaped cosmetic molding technique whereby high- quality rod-shaped cosmetics can be obtained with efficiency. SOLUTION: A molding tool mounted on a rod-shaped-cosmetic holder 5 to mold melted cosmetics into a rod shape includes a die part 1 filled with the melted cosmetics, a holder guide part 2 formed to continue from the open- side end of the die part 1 in such a way as to cover at least a portion of the holder 5 mounted, and projections 3a, 3c formed on the inner surface of the holder guide part 2, and by pressing the part of the holder guide part 2 located on the opposite side to the die part 1 across the projections 3a, 3c, the die part 1 is deformed, so that the inner peripheral surface of the die part is separated from the surface of the rod-shaped cosmetic molded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for forming a stick-shaped cosmetic such as a lipstick, and more particularly to a stick-shaped cosmetic forming tool used by being attached to a holder for the stick-shaped cosmetic, and a stick-shaped cosmetic forming tool. The present invention relates to a method for molding a stick-shaped cosmetic using a tool.

[0002]

The method of molding a stick-shaped cosmetic such as lipstick is roughly classified into a mold molding method and a capsule molding method. In recent years, the latter capsule molding method is often used because there is an advantage that the shape of crimson can be easily changed. This capsule molding method will be briefly described as follows.

[0003] First, a capsule-shaped molding tool is attached to a lipstick container. More specifically, the opening-side end of the molding tool is fitted to the middle plate of the lipstick container (a member whose base end side is fixed and which displaces inside the lipstick container as the lipstick projects and retracts). After the molding tool is attached to the lipstick container, the molding tool is subsequently filled with the cosmetic in a molten state. At this time, the cosmetic is supplied from a hole provided at the bottom of the lipstick container. After the cosmetic is filled in a prescribed amount, the supply is stopped and the cosmetic is cooled by blowing cold air on the molding tool. Then, when the filled cosmetic solidifies, the molding tool is removed. Thus, a stick-shaped lipstick is obtained. The same applies to the case where the molding is performed by attaching only the middle plate of the lipstick container to the molding tool.

Incidentally, the cosmetic filled in the molding tool shrinks as it solidifies, so that a slight gap is finally formed between the lipstick surface and the inner peripheral surface of the molding tool. For this reason, the molding tool is relatively easily separated from the lipstick. However, the lipstick surface is not completely separated from the inner peripheral surface of the molding tool, and the adhered portion still remains. Therefore, when the molding tool is removed, the surface of the lipstick is often scratched, and sometimes the lipstick surface is partially damaged.

In order to solve such a disadvantage, there is a lipstick filling container disclosed in Japanese Utility Model Laid-Open No. 7-36931. This lipstick filling container is provided with a thin protruding piece at the tip, and can be divided into two from this part. Therefore, the lipstick is not damaged due to the friction between the lipstick surface and the inner peripheral surface of the molding tool. However, this lipstick filling container has a fatal drawback that the tip side of the lipstick is easily damaged. In addition, productivity is low because a lot of labor is required for splitting the lipstick filling container.

Accordingly, an object of the present invention is to provide a stick-shaped cosmetic forming technique capable of efficiently obtaining a high-quality stick-shaped cosmetic.

[0007]

An object of the present invention is to provide a molding tool for mounting a molten cosmetic material in a rod shape, which is used by being attached to a holder for a rod-shaped cosmetic material. A mold part to be filled, a holder guide part continuously provided from the opening side end of the mold part so as to cover at least a part of the attached holder, and an inner surface of the holder guide part. A projection formed on the holder guide portion, by pressing a portion of the holding member guide portion opposite to the mold portion with the projection interposed therebetween, the mold portion is deformed, and an inner periphery of the mold portion is deformed. The problem is solved by the rod-shaped cosmetic forming tool, wherein the surface is configured to be separated from the surface of the formed rod-shaped cosmetic.

In this stick-shaped cosmetic molding tool,
The holding body guide portion has a plurality of mutually independent guide pieces extending from the opening-side end of the mold portion, and the projection can be formed on the inner surface of each of the plurality of guide pieces. . In particular, since a simple structure can exhibit a sufficient function, the holding body guide portion has four independent arc-shaped cross-section guide pieces extending from the opening end of the mold portion, and the protrusion is Preferably, it is formed on the inner surface of each of the four guide pieces.

Another object of the present invention is a method for forming a molten cosmetic into a rod using the above-mentioned rod-shaped cosmetic molding tool, wherein the rod-shaped cosmetic molding tool is formed of a rod-shaped cosmetic. Attaching to the holding body, filling the molten cosmetic in the mold of the rod-shaped cosmetic molding tool, cooling and solidifying the filled cosmetic, holding the rod-shaped cosmetic molding tool By pressing a portion of the body guide portion opposite to the mold portion with the protrusion interposed therebetween, the mold portion is deformed, and the inner peripheral surface of the mold portion is separated from the surface of the molded bar-shaped cosmetic. And a step of removing the rod-shaped cosmetic forming tool from the holder.

That is, in the rod-shaped cosmetic molding tool having the above-described structure, the portion of the holder guide portion located on the opposite side of the mold portion with the projection interposed therebetween, that is, the upper end of the holder guide portion is pressed, so that the holder guide is pressed. The part rotates around the protrusion. As a result, the rod-shaped cosmetic forming tool is deformed so that the mold part expands, whereby the inner peripheral surface of the mold part is separated from the surface of the molded rod-shaped cosmetic.

Therefore, when the bar-shaped cosmetic forming tool is detached from the holder for the bar-shaped cosmetic, the mold may be deformed once, whereby the surface of the bar-shaped cosmetic and the mold inside the mold of the bar-shaped cosmetic forming tool are removed. The portion in close contact with the peripheral surface can be almost completely eliminated. If the contact state of both is released,
When removing the rod-shaped cosmetic forming tool, the inner peripheral surface of the mold portion does not rub against the surface of the molded rod-shaped cosmetic, and the surface of the rod-shaped cosmetic does not suffer from scratches due to this. Also, like the conventional technology that splits the mold from the tip side,
There is no danger of a large force acting locally on the stick-shaped cosmetic, so that the stick-shaped cosmetic does not suffer from abrasion or other damage.

Further, according to the present invention, it is possible to remove the rod-shaped cosmetic forming tool from the rod-shaped cosmetic holder by simply pressing the upper end of the holder guide without damaging the rod-shaped cosmetic. However, the effort involved is insignificant. Therefore, it is possible to efficiently obtain a stick-shaped cosmetic with excellent productivity and high quality.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A stick-shaped cosmetic molding tool described below as an embodiment of the present invention (hereinafter simply referred to as a molding tool)
Is for shaping the melted cosmetic into a stick shape, which is used by being attached to a holder for a stick-shaped cosmetic (lipstick container), and is provided with a mold portion filled with the molten cosmetic. A holder guide portion provided continuously from the opening-side end of the mold portion, and a projection formed on an inner surface of the holder guide portion, so as to cover at least a part of the holder. By pressing a portion of the holding body guide portion opposite to the mold portion with the projection interposed therebetween, the mold portion is deformed, and the inner peripheral surface of the mold portion is molded into a rod-shaped cosmetic material. Is configured to be separated from the surface of the.
In particular, the holding body guide portion has four independent arc-shaped cross-section guide pieces extending from the opening-side end of the mold portion, and the projection is formed on the inner surface of each of the four guide pieces. ing.

Further, similarly to the molding tool, a method of molding a stick-shaped cosmetic material (hereinafter simply referred to as a molding method), which will be described below as an embodiment of the present invention, is a method of molding a molten cosmetic material using the molding tool described above. A step of attaching the rod-shaped cosmetic forming tool to a holder of the rod-shaped cosmetic,
A step of filling the cosmetic in a molten state in the mold of the rod-shaped cosmetic forming tool, a step of cooling and solidifying the filled cosmetic, and a step of holding the guide in the holding body guide of the rod-shaped cosmetic forming tool. Pressing the portion located on the opposite side of the mold portion between the mold portions, deforming the mold portion, and separating the inner peripheral surface of the mold portion from the surface of the molded bar-shaped cosmetic material; Removing the forming tool from the holding body.

An embodiment of the present invention will be described in more detail with reference to FIGS. 1 is a perspective perspective view of the molding tool, FIG. 2 is a longitudinal sectional view of the molding tool, and FIG. 3 is a plan view of the molding tool. The molding tool of the present embodiment is obtained by integrally molding a resin material such as a polycarbonate resin and an ABS resin. As can be seen from FIGS. 1 and 2, a mold filled with a cosmetic in a molten state is used. It comprises a portion 1 and a lipstick container guide portion (holding member guide portion) 2 provided continuously from an end of the mold portion 1 on the opening side.

In particular, the lipstick container guide portion 2 is composed of four arc-shaped cross-section guide pieces 2a to 2d independent of each other and a bottom plate 2e on which these guide pieces 2a to 2d are erected. In other words, the lipstick container guide portion 2 has a structure in which notches are formed at four places of the bottomed cylinder along the axial direction. Projections 3a to 3d are formed on the inner surfaces of the guide pieces 2a to 2d, respectively. This projection 3
As can be seen from FIG. 3, a to 3d are present at intervals of 90 °, and their height dimensions (indicated by h in FIG. 2) are different from the outer peripheral surface of the lipstick container when the molding tool is attached to the lipstick container. It is of such an extent that a slight gap is formed between them.

In the present embodiment, as described above, four guide pieces 2a to 2d independent from each other are formed by forming notches in four places of the bottomed cylinder along the axial direction thereof. . However, the shape of the lipstick container guide portion is not limited to this form, and may be a complete cylindrical shape without a notch. Alternatively, two or three, or even five or more independent guide pieces may be formed. However, the number of the guide pieces is preferably an even number.

When the lipstick container guide is cylindrical,
The protrusions are formed on the inner peripheral surface at regular intervals. Also,
When the lipstick container guide section is composed of two or three, or even five or more guide pieces, the projection is formed, for example, one on each inner surface of each of the guide pieces. An annular rib 4 is provided on the bottom plate 2 e of the lipstick container guide 2 so as to surround the opening of the mold 1. The annular rib 4 functions when the forming tool is attached to the lipstick container. That is, the annular rib 4 is fitted to the end of the middle plate of the lipstick container, whereby the molding tool can be fixed to the lipstick container.

In the above-mentioned molding tool, a portion of the lipstick container guide portion 2 located on the opposite side of the mold portion 1 across the projections 3a to 3d, that is, the upper end of the lipstick container guide portion 2 is pressed while being attached to the lipstick container. Then, the mold part 1 is deformed so that the opening side is expanded. As a result, the inner peripheral surface of the mold 1
Can be separated from the surface of the molded lipstick. Next, a lipstick molding method using the above-mentioned molding tool will be described with reference to FIGS. FIG. 4 is a cross-sectional view showing a state in which the molding tool attached to the lipstick container is filled with the cosmetic, FIG. 5 is a cross-sectional view showing a state in which the molding tool attached to the lipstick container is deformed,
FIG. 6 is a sectional view showing a state in which the molding tool has been removed from the lipstick container.

When molding the lipstick, first, the molding tool is attached to the lipstick container 5. At this time, the annular rib 4
Is fitted to the end of the inner plate 6. Subsequently, a nozzle (not shown) is inserted into an opening provided at the bottom of the lipstick container 5, and the cosmetic P in a molten state is filled into the mold 1 from the nozzle. FIG. 4 shows a state in which the cosmetic P is half filled in the mold 1.

When the prescribed amount of the cosmetic P is filled in the mold 1, the supply is stopped, and the filled cosmetic P is cooled by blowing cold air on the mold 1. As a result, the filled cosmetic P solidifies and becomes a stick-like (lipstick)
Becomes Next, the molding tool is removed from the lipstick container 5. At this time, the upper end of the lipstick container guide 2 is pressed to deform the entire molding tool as shown in FIG. 5, and the inner peripheral surface of the mold 1 is once completely separated from the surface of the molded lipstick.

After releasing the close contact between the inner peripheral surface of the mold portion 1 and the lipstick surface, the molding tool is removed as shown in FIG. 6 to complete the lipstick molding operation. As described above, in the molding tool of the present embodiment, once the mold portion 1 is deformed, the portion where the lipstick surface and the inner peripheral surface of the mold portion are in close contact can be almost completely eliminated. Therefore, when the molding tool is removed, the inner peripheral surface of the mold portion does not rub against the surface of the molded lipstick, and the surface of the lipstick does not suffer from scratches due to this. Further, since the labor required for removing the molding tool is only a small amount of pressing the upper end of the lipstick container guide portion 2, it is excellent in productivity and a high-quality lipstick can be efficiently obtained.

[0023]

EXAMPLES The above molding tool (made of ABS resin, inner diameter: 11.5
lipstick was manufactured using the following conditions. At this time, after once pressing the upper end of the lipstick container guide portion, the area ratio of the inner peripheral surface of the mold portion still in close contact with the lipstick surface was measured. Furthermore, the appearance of the lipstick after removing the molding tool was also examined for its quality. The results are as follows.

For comparison, a lipstick was manufactured under the same conditions as in this example using a conventional method in which the mold was pulled out after molding. Then, the area ratio of the inner peripheral surface of the mold, which was still in close contact with the lipstick surface after the cosmetic was solidified, and the appearance of the lipstick after removing the molding tool were examined. The results are also shown. [Conditions] Temperature of cosmetic before filling: 85 ° C Temperature of lipstick container before filling with cosmetic: 40 ° C Temperature of molding tool (mold) before filling with cosmetic: 40 ° C Cooling method: Cooled at 25 ° C for 4 minutes After that, it was further cooled at 5 ° C. for 1 hour. [Results] Adhesion area ratio Appearance This example 1% or less Good Comparative example 10 to 15% Partially scratched

[0025]

[Characteristics] In the molding tool of the present embodiment, when detached from the lipstick container, the area ratio of the inner peripheral surface of the mold portion in close contact with the lipstick surface is
It is much smaller than conventional ones and does not cause scratches that degrade the quality.

[0026]

According to the present invention, a high-quality bar-shaped cosmetic can be obtained efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective perspective view of a molding tool (rod-shaped cosmetic molding tool).

FIG. 2 is a longitudinal sectional view of a molding tool.

FIG. 3 is a plan view of a molding tool.

FIG. 4 is a cross-sectional view showing a state in which a cosmetic is filled in a molding tool attached to a lipstick container.

FIG. 5 is a sectional view showing a state in which a molding tool attached to the lipstick container is deformed.

FIG. 6 is a sectional view showing a state in which a molding tool is removed from the lipstick container.

[Description of Signs] 1 mold part 2 lipstick container guide part (holding body guide part) 2a to 2d guide piece 2e bottom plate 3a to 3d projection 4 annular rib 5 lipstick container (stick-shaped cosmetic holding body) 6 middle plate P cosmetic

Claims (4)

[Claims] 1. A molding tool for molding a melted cosmetic into a rod, which is used by being attached to a holder for a rod-shaped cosmetic, comprising: a mold portion filled with a molten cosmetic; And a projection formed on an inner surface of the holding body guide section, the holding body guide section being provided continuously from the opening end of the mold section so as to cover at least a part of the holding body. By pressing a portion of the holding body guide portion opposite to the mold portion with the projection interposed therebetween, the mold portion is deformed, and the inner peripheral surface of the mold portion is molded into a rod-shaped cosmetic material. A stick-shaped cosmetic molding tool characterized by being configured to be separated from the surface of the stick. 2. A holding body guide portion having a plurality of independent guide pieces extending from an opening-side end of a mold portion, wherein a projection is formed on an inner surface of each of the plurality of guide pieces. The stick-shaped cosmetic forming tool according to claim 1, wherein the tool comprises: 3. The holding body guide portion includes four independent arc-shaped cross-section guide pieces extending from the opening-side end of the mold portion, wherein the projection has an inner surface of each of the four guide pieces. The rod-shaped cosmetic molding tool according to claim 1, wherein the molding tool is formed as follows. 4. A method for molding a melted cosmetic into a rod using the rod-shaped cosmetic molding according to any one of claims 1 to 3, wherein the rod-shaped cosmetic molding is A step of attaching to a holder of a rod-shaped cosmetic, a step of filling a molten state cosmetic in a mold portion of the rod-shaped cosmetic molding tool, a step of cooling and solidifying the filled cosmetic, and a step of the rod-shaped cosmetic By pressing a portion of the holding member guide portion of the molding tool, which is located on the opposite side of the mold portion with the projection interposed therebetween,
Deforming the mold part, separating the inner peripheral surface of the mold part from the surface of the molded rod-shaped cosmetic, and removing the rod-shaped cosmetic molding tool from the holder. Stick-shaped cosmetics molding method.