JP7179537B2 - Rod-shaped external preparation composition product and its manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rod-shaped external preparation composition product and a method for producing the same.

Various stick-shaped external preparation compositions such as lipstick are generally held in a bottomed cylindrical holding part called an inner plate, and are housed in a stick-shaped external preparation composition container that can be raised and lowered by a lifting mechanism. It is often used (see Patent Documents 1 and 2).
In addition, with regard to the rod-shaped external preparation composition, in order to improve the feeling of use when applied to the applied part such as the lips, research has been extensively conducted from the formulation aspect of the rod-shaped external preparation composition. In order to improve the hardness, it is considered good to make the hardness relatively soft. However, if the hardness of the rod-shaped topical composition is reduced in order to improve the feeling of use, the rod-shaped topical composition product containing the rod-shaped topical composition in the container may be mistakenly placed on the ground. When dropped on the floor, the rod-shaped composition for external use tends to be damaged such as cracks, and the impact resistance tends to be insufficient. On the other hand, if the hardness of the stick-shaped external preparation composition is increased so as not to be damaged when dropped, the feeling of use deteriorates.
Thus, in the prior art, it was not easy to achieve both improved usability and impact resistance.

JP 2006-204415 A Japanese Unexamined Patent Application Publication No. 2017-718

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rod-shaped external preparation composition product and a method for producing the same that can overcome the drawbacks of the prior art.

The present invention provides a rod-shaped external composition container comprising a bottomed cylindrical middle plate having a space for accommodating a lower end region of the rod-shaped topical composition, a lift mechanism for the middle plate, and an outer cylinder for housing the middle plate. and a rod-shaped topical composition having a lower end region housed in the housing space, wherein the bottom end of the rod-shaped topical composition in the housing space and the middle plate A closed space in which gas is enclosed is provided between the bottom of the closed space and the closed space in accordance with a change in pressure applied in the vertical direction of the rod-shaped topical composition from the upper end side of the rod-shaped topical composition. The object of the present invention is to provide a rod-shaped external preparation composition product whose height along the longitudinal direction is increased or decreased.

Further, according to the present invention, there is provided the above-described method for producing a rod-shaped topical composition product, wherein the closed space is formed by using, as the inner plate, an inner plate provided with an exhaust hole communicating between the inside and the outside of the housing space. The closed space forming step includes placing the lower end region of the rod-shaped external composition molded into a predetermined shape into the accommodation space of the middle plate and the lower end of the rod-shaped external composition. an inserting step of inserting the rod-shaped external composition to a position where it does not reach the bottom of the middle plate, and a closing step of closing the exhaust hole in a state where the lower end of the rod-shaped topical composition does not reach the bottom of the middle plate. A method for manufacturing a pharmaceutical composition product is provided.

The rod-shaped external composition product of the present invention is excellent in the feeling of use when the rod-shaped external composition is pressed against a part to be coated such as the lips, and is also excellent in impact resistance.
According to the method for producing a rod-shaped topical composition product of the present invention, it is possible to efficiently produce a rod-shaped topical composition product that is excellent in usability and impact resistance.

FIG. 1 is a vertical cross-sectional view showing a non-pressurized state of a rod-shaped external composition product according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view of the rod-shaped external composition product of the first embodiment of the present invention. FIG. 3 is a perspective view showing a preferred example of a closing member that can be used for the rod-shaped external preparation composition product of the first embodiment. 4(a) to 4(c) are cross-sectional views showing preferred manufacturing steps of the rod-shaped topical composition product of the first embodiment, and FIG. 4(d) shows the completed rod-shaped topical composition product. It is sectional drawing which shows the state which extended|fed out the inner plate again later. 5(a) to 5(c) are vertical cross-sectional views showing an example of a rod-shaped external preparation composition product and a method for producing the same according to the second embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view showing a state in which the inner plate is pulled out again after completion of the agent composition product. FIG. 6(a) is a plan view of the closing member used in the second embodiment, and FIG. 6(b) is a front view of the same closing member.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on its preferred embodiments with reference to the drawings. 1 and 2 show a rod-shaped external preparation composition product 1 according to a first embodiment of the present invention. A rod-shaped topical composition product 1 includes a rod-shaped topical composition container 3 and a rod-shaped topical composition 2 .
The rod-shaped external agent composition container 3 includes a bottomed cylindrical middle plate 10 having a housing space S for the lower end region 2a of the rod-shaped external agent composition 2, an elevating mechanism 20 for the middle plate 10, and an outer portion for housing the middle plate 10. A cylinder 30 is provided. FIG. 1 shows a state in which a rod-shaped topical composition product 1 is composed of a rod-shaped topical composition container 3 and a rod-shaped topical composition 2. , in addition to these components, a cap 4 indicated by a two-dot chain line in FIG. 1 may be provided.

The inner plate 10 of the rod-shaped external composition container 3 is a bottomed tubular member having an annular peripheral wall portion 11 and a bottom portion 12 . The cross-sectional shape of the annular peripheral wall portion 11 can be circular, for example, but is not limited to circular. In the middle plate 10, a space S opened upward is defined by the annular peripheral wall portion 11 and the bottom portion 12. As shown in FIG. This space S serves as a storage space S in which the lower end region 2a of the rod-shaped external preparation composition 2 can be stored. In a cross-sectional view of the rod-shaped external composition product 1, the housing space S and the lower end region 2a of the rod-shaped external composition 2 have generally complementary shapes. In this embodiment, the cross-sectional shape of the peripheral wall portion 11 of the inner tray 10 and the cross-sectional shape of the lower end region 2a of the rod-shaped composition for external use 2 to be inserted into the accommodation space S are both circular. It may also be circular or elliptical in cross-section, or other shapes such as polygonal cross-sections such as triangles, squares, pentagons and hexagons.

As shown in FIG. 1, the recessed storage space S of the inner plate 10 accommodates the lower end region 2a of the rod-shaped external composition 2 and the lower end 2d of the rod-shaped external composition 2 in the storage space S. A closed space M filled with gas is formed between the inner plate 10 and the bottom portion 12 . The sealed space M is not simply a space formed between the lower end 2d of the rod-shaped external composition 2 and the bottom 12 of the inner plate 10, but a space in which gas is sealed. The height T of the sealed space M along the longitudinal direction X increases or decreases as the pressure applied from the upper end 2u side of the rod-shaped topical composition 2 in the longitudinal direction X of the rod-shaped topical composition 2 changes. . In the present invention, the longitudinal direction X is the direction along the longitudinal direction of the rod-shaped topical composition 2 as shown in FIG. Since the longitudinal direction of the product 1 is the same, the direction along the longitudinal direction of the rod-shaped topical composition 2 in the rod-shaped topical composition product 1 is also referred to as the longitudinal direction X.

FIG. 1 shows a non-stick of the rod-shaped topical composition product 1 in which no pressing force is applied to the rod-shaped topical composition 2 in the longitudinal direction X of the rod-shaped topical composition 2 from the upper end 2u side of the rod-shaped topical composition 2. Pressurization is shown.
Since the rod-shaped topical composition product 1 of the first embodiment has a sealed space M in which a gas is sealed in the housing space S, the rod-shaped topical composition 2 is placed from the upper end 2u side of the rod-shaped topical composition 2. When pressure is applied in the vertical direction X, the position of the lower end 2d of the rod-shaped topical composition 2 is lowered from the reference position P, which is the position in the non-pressurized state, in the direction D1 approaching the bottom 12, and along with this, the closed space The gas in M is compressed. Then, when the pressure applied to the rod-shaped topical composition 2 decreases, the position of the lower end 2d of the rod-shaped topical composition 2 rises in the direction D2 away from the bottom 12 due to the repulsive force of the compressed gas, and reaches the reference position. approach P. Then, when the pressure is released again, the position of the lower end 2d of the rod-shaped external preparation composition 2 returns to the reference position P or a position close to it, ideally to the reference position P.

According to the rod-shaped topical composition product 1 of the first embodiment, due to the existence of the closed space M, the rod-shaped topical composition 2 is increased or decreased in the longitudinal direction X by the pressure applied to the upper end 2u side of the rod-shaped topical composition 2. Therefore, when the upper end 2u side of the rod-shaped composition for external use 2 is brought into contact with a part to be applied such as the lips, an excellent feeling of use with a cushion feeling can be obtained. From the viewpoint of obtaining an excellent feeling of use, a general consumer holds the rod-shaped external composition container 3 and applies the external composition of the rod-shaped external composition 2 to the applied part such as the lips. It is preferable that the rod-shaped composition for external use 2 is displaced by 0.5 mm or more due to the pressing force applied during application. In addition, by reducing the frictional force generated between the outer peripheral surface of the rod-shaped external agent composition 2 and the inner peripheral surface of the housing space S, the minute pressure fluctuations applied to the upper end 2u side of the rod-shaped external agent composition 2 In addition, it is also preferable to displace the rod-shaped external composition 2. In this case, the pressure applied from the applied part such as the lips to the change in the pressure applied to the rod-shaped external composition product 1 by hand. Fluctuations can be reduced, and uniform application of the composition for external use is facilitated.

Furthermore, when the rod-shaped topical composition product 1 is accidentally dropped, especially when the rod-shaped topical composition product 1 is dropped in an upright state, the gas in the sealed space M functions like an air cushion, The impact applied to the rod-shaped external preparation composition 2 is mitigated. Therefore, the rod-shaped external preparation composition product 1 is also excellent in impact resistance, particularly in impact resistance when dropped in an upright state. Dropping in an upright state means dropping with the upper end 2u side of the rod-shaped external composition 2 facing vertically upward and the bottom 12 side of the inner plate 10 facing the ground or floor.

The adjustment of the frictional force between the outer peripheral surface of the rod-shaped external composition 2 and the inner peripheral surface of the housing space S is performed by adjusting the inner diameter of the housing space S and the lower end region 2a of the rod-shaped external composition 2 housed in the housing space S. adjustment of the difference from the outer diameter of the rod-shaped external agent composition 2, adjustment of the prescription of the rod-shaped external agent composition 2, supply of a lubricant such as low-viscosity oil between the rod-shaped external agent composition 2 and the inner surface of the housing space S, for example, a rod-shaped external agent Any method can be employed, such as applying a lubricant to one or both of the outer surface of the agent composition 2 and the inner surface of the containing space S, or using a material with low frictional resistance for the inner surface of the containing space S.

From the viewpoint of ensuring that one or more of the above effects are exhibited, the height T (see FIG. 1) of the sealed space M along the longitudinal direction X is preferably 1 mm or more, more preferably 3 mm or more. and is preferably 45 mm or less, more preferably 30 mm or less, more preferably 1 mm or more and 45 mm or less, more preferably 3 mm or more and 30 mm or less.

In addition, from the viewpoint of ensuring that one or more of the above-described effects are exhibited, and from the viewpoint of preventing the rod-shaped external preparation composition 2 from falling out of the housing space S due to a decrease in atmospheric pressure or an increase in temperature. Therefore, the height T (see FIG. 1) of the closed space M along the longitudinal direction X is preferably 2% or more, more preferably 2% or more, of the height T1 (see FIG. 1) of the accommodation space S in the same longitudinal direction X. is 6% or more, preferably 90% or less, more preferably 60% or less, more preferably 2% or more and 90% or less, more preferably 6% or more and 60% or less.

Moreover, from the viewpoint of ensuring that one or more of the above-described effects are exhibited, the rod-shaped external preparation composition 2 has a height T2 (see FIG. 1 ) is preferably 3 mm or more, more preferably 5 mm or more, more preferably 45 mm or less, more preferably 30 mm or less, and more preferably 3 mm or more and 45 mm or less, more preferably 5 mm or more and 30 mm or less.
From a similar point of view, in the rod-shaped external preparation composition 2, the ratio of the height T2 in the longitudinal direction X of the portion located in the housing space S to the total height T3 in the longitudinal direction X (see FIG. 1) is preferably 3%. Above, more preferably 5% or more, more preferably 60% or less, more preferably 50% or less, more preferably 3% or more and 60% or less, more preferably 5% or more and 50% or less.

The height T of the enclosed space M (see FIG. 1) and the height T2 of the portion of the rod-shaped topical composition 2 located within the accommodation space S are such that the rod-shaped topical composition product 1 is not applied. Measured values immediately after leaving for 6 to 24 hours in an environment with a pressure of 25° C., a relative humidity of 50%, and an atmospheric pressure of 1005 to 1019 hPa in an upright state in which the longitudinal direction X is parallel to the vertical direction.

Further, from the viewpoint of ensuring that one or more of the above-described effects are exhibited, the rod-shaped external preparation composition preferably has a displacement of 1 mm or more, more preferably 2 mm or more when a load of 150 gf is applied. It is preferably 20 mm or less, more preferably 15 mm or less, more preferably 1 mm or more and 20 mm or less, more preferably 2 mm or more and 15 mm or less. The load of 150 g is a load assuming the pressing force applied to the stick-shaped external preparation composition when applying lipstick.

[Method for measuring the amount of displacement when a load of 150 g is applied]
When the upper end 2u side of the rod-shaped topical agent composition 2 is an inclined surface like the rod-shaped topical agent composition 2 shown in FIG. is cut in a plane orthogonal to its longitudinal direction X to remove the sloping surface. In addition, the rod-shaped external composition 2 in the rod-shaped external composition product 1 is extended from the highest point 30b of the outer cylinder 30 by a length equal to or greater than the expected displacement amount.
Then, the rod-shaped composition for external use 2 in that state was pressed against the electronic balance so that the load applied in the longitudinal direction X was 150 g. Then, the difference in length along the vertical direction X between the highest point of the rod-shaped topical agent composition 2 and the highest point 30b of the outer cylinder 30 before and after the pressurization was defined as the amount of displacement when a load of 150 g was applied ( mm).

To further explain the rod-shaped topical composition product 1 of the first embodiment, the bottom 12 of the middle plate 10 in the rod-shaped topical composition container 3 used in the rod-shaped topical composition product 1 is equipped with a mechanism for raising and lowering the middle plate 10 . A mechanism 20 is connected. The lifting mechanism 20 has a lifting base 21 . The elevating base 21 has a tubular shape, and has a plurality of annular stepped portions extending along the circumferential direction on its outer peripheral surface. A plurality of annular stepped portions are formed at intervals along the vertical direction of the elevation base portion 21 . Among the plurality of annular stepped portions, the first stepped portion 21a located at the lowermost side of the main body base portion 40, as shown in FIG. It is adapted to be engaged with an engaging projection 42 projecting from the inner peripheral wall. A second stepped portion 21b is formed at a position above the first stepped portion 21a in the vertical direction. As shown in FIG. 1, the second stepped portion 21b engages with an engaging annular protrusion 31 formed in the lower end region of the outer cylinder 30 when the lifting mechanism 20 is housed in the outer cylinder 30, which will be described later. It is designed to A third stepped portion 21c is formed at a position above the second stepped portion 21b in the vertical direction. As shown in FIG. 2, an O-ring 24 is attached to the third step portion 21c. The O-ring 24 is used to prevent looseness or the like between the outer cylinder 30 and the lifting mechanism 20 when the lifting mechanism 20 is housed in the outer cylinder 30 .

As shown in FIG. 1, the elevation base 21 has a space 21s in its central area when viewed in cross section. 21 s of this space is extended along the up-down direction of the raising/lowering base part 21, and is opened in the upper part. A female screw 21d is provided on the inner peripheral wall defining the space 21s. The first lifting section 22 is inserted into the space 21s. The first elevating section 22 is a substantially cylindrical member, and has a male screw 22a on its outer surface. The male screw 22a is adapted to screw together with the female screw 21d of the lifting base 21 described above. Therefore, when inserting the first elevating section 22 into the space 21s of the elevating base section 21, the first elevating section 22 is rotated about its axis to advance the screw engagement between the male thread 22a and the female thread 21d. The first elevating portion 22 descends as the screwing progresses. By reversing the rotation direction of the first elevating section 22, the first elevating section 22 is lifted. The descent of the first elevating section 22 is restricted by the flange portion 22c provided at the upper end of the first elevating section 22 coming into contact with the stepped portion near the upper end of the elevating base section 21. As shown in FIG.

As shown in FIG. 1, the first elevating section 22 having a substantially cylindrical shape is provided with a female screw 22b on an inner peripheral wall defining a space formed therein. A second elevating unit 23 is inserted into the space inside the first elevating unit 22 . The second elevating section 23 is a substantially cylindrical member, and has a male screw 23a on its outer surface. The male screw 23a is adapted to screw together with the female screw 22b of the first elevating section 22 described above. When inserting the second elevating section 23 into the space of the first elevating section 22, the second elevating section 23 is rotated about its axis to advance the screw engagement between the male thread 23a and the female thread 22b. The second lifting section 23 descends as the screwing progresses. By reversing the rotation direction of the second elevating section 23, the second elevating section 23 is lifted.

The inner plate 10 in the first embodiment has an exhaust hole 5 that communicates the inside and the outside of the housing space S. As shown in FIG. The exhaust hole 5 in this embodiment is closed by the closing member 50 in the finished state of the rod-shaped external preparation composition product 1 in which the above-described closed space M is formed in the accommodation space S.
More specifically, the exhaust hole 5 has an upper end opening 5a that opens to the upper surface of the bottom portion 12 of the inner plate 10 and a lower end opening 5b that opens to the central area of the lower end of the second elevating portion 23 .
The exhaust hole 5 is a storage space in which the lower end region 2a of the rod-shaped external agent composition 2 is stored when the exhaust hole 5 is not closed by the closing member 50 (hereinafter also referred to as an unclosed state of the exhaust hole). As an air vent hole for communicating the inside and outside of the storage space S and discharging the air in the storage space S to the outside of the storage space S when the lower end region 2a of the rod-shaped external composition 2 is inserted into the storage space S of the inner plate 10 Function. On the other hand, in the finished state of the rod-shaped external composition product 1, it is closed by the closing member 50, and the air in the housing space S is discharged to the outside through the exhaust hole 5, and the external air is The gas is prevented from flowing into the accommodation space S through the exhaust hole 5, and the gas is enclosed between the lower end 2d of the rod-shaped external composition 2 and the bottom portion 12 of the inner tray 10 in the accommodation space S. A closed space M is formed.

The rod-shaped external composition container 3 has an outer cylinder 30 . The outer cylinder 30 is a thin-walled cylindrical member in which the inner tray 10 and the lifting mechanism 20 can be accommodated. A lower edge of the outer cylinder 30 is positioned on a plane perpendicular to the axis of the outer cylinder 30 . In contrast to this, the upper edge 30a of the outer cylinder has a peripheral shape of the bottom surface of an oblique cylinder. The upper edge 30a thus has an uppermost point 30b and a lowermost point 30c. A lower end region of the outer cylinder 30 is formed with an engaging annular protrusion 31 extending along the circumferential direction of the outer cylinder 30 . The engagement annular protrusion 31 protrudes toward the space inside the outer cylinder 30 . As described above, the engaging annular protrusion 31 engages with the second stepped portion 21b of the lifting base 21 of the lifting mechanism 20 . A plurality of longitudinal grooves (not shown) extending in the longitudinal direction X are formed on the inner surface of the peripheral wall portion 11 of the outer cylinder 30 at intervals in the circumferential direction. A rib or protrusion moves along the longitudinal direction X within the flute. Therefore, while the inner tray 10 can be moved in the vertical direction X within the outer cylinder 30 by the elevating mechanism 20, when holding the outer cylinder 30 with one hand and rotating the main body base 40 with the other hand, the inner tray 10 can be moved upward. 10 does not rotate with the outer cylinder 30 .

The rod-shaped external composition container 3 has a main body base 40 . The main body base portion 40 has a substantially prismatic shape with rounded edges. The main body base 40 has a space 41 in its central region when viewed in cross section. The space 41 extends along the vertical direction of the main body base 40 and is open at the top. The space 41 accommodates the outer cylinder 30, the lifting mechanism 20, and the lower end region 2a of the rod-shaped external agent composition. An engaging protrusion 42 protrudes from the lower end region of the inner peripheral wall defining the space 41 of the main body base 40 . As described above, the engaging projection 42 engages with the first stepped portion 21a of the lifting base 21 of the lifting mechanism 20. As shown in FIG. In this embodiment, the main body base 40 has a substantially prismatic shape with rounded ridges, but it may alternatively have a circular or elliptical cross section, or may have a triangular, quadrangular, pentagonal or triangular cross section. Other shapes such as polygons such as hexagons may be used.

The closing member 50 shown in FIG. 3 is an example of the closing member 50 preferably used for the rod-shaped external preparation composition product 1 of the first embodiment. A closing member 50 shown in FIG. A non-closed insertion portion 51 that maintains air circulation through the exhaust hole 5, and a pedestal portion that engages with the lower end portion of the second elevating portion 23 and airtightly closes the lower end opening 5b of the exhaust hole 5. 52. The pedestal portion 52 of the closing member 50 includes a closed insert portion 53 connected to the lower end portion of the non-closed insert portion 51 , an annular outer fitting portion 54 formed around the closed insert portion 53 , and the closed insert portion 53 . It has a connecting portion 55 that connects with the outer fitting portion 54 , and the outer fitting portion 54 is engaged with an annular engaging convex portion 59 formed on the outer peripheral portion of the lower end portion of the second elevating portion 23 . A joint convex portion 57 is provided. The closing insert 53 has a cross-sectional area that is substantially the same as the cross section of the exhaust hole 5 and blocks the flow of air through the exhaust hole 5 inserted into the exhaust hole 5 . The closing member 50 is formed by one of, preferably both, the insertion of the closing insertion part 53 into the exhaust hole 5 and the tight contact of the connecting part 55 with the peripheral edge of the lower end opening 5 b of the exhaust hole 5 . 5 is hermetically closed.
As the closing member 50, instead of the form shown in FIG. 3, various shapes and configurations capable of closing the exhaust hole 5 can be adopted. 8, 10, 15, and 16, and the closing member shown in FIGS. 6 and 8 of Patent Document 1 can also be used.

Next, the first embodiment of the method for producing the rod-shaped topical composition product of the present invention will be described by taking as an example the case of producing the above-described rod-shaped topical composition product 1 of the first embodiment.
In the manufacturing method of the present embodiment, as shown in Figs. 2 and 4(a), a bottomed cylindrical middle plate 10 having a storage space S for the lower end region 2a of the rod-shaped external composition 2 is provided as the storage space. A closed space forming step is provided in which an intermediate plate 10 having an exhaust hole 5 communicating between the inside and outside of S is used, and the closed space M is formed using the intermediate plate 10 .
More specifically, as shown in FIG. 4( a ), the inner tray 10 , the lifting mechanism 20 for the inner tray 10 , and the outer cylinder 30 are assembled in the main body base 40 . When assembling, the first lifting section 22 and the second lifting section 23 are rotated to extend the inner tray 10 to the extent shown in FIG. It is partially inserted into the exhaust hole 5 formed in the portion 22 and temporarily fixed. In order to temporarily fix a part of the closing member 50 to the exhaust hole 5, an adhesive that can be easily released by lowering the second elevating portion 23 may be used. Any method can be used, such as a method of forming a protrusion that abuts on the inner surface of the exhaust hole 5 to the extent that the lowering of the second elevating portion 23 is not hindered. Further, instead of temporarily fixing a part of the closing member 50 to the exhaust hole 5, the closing member 50 is temporarily fixed to the bottom portion 40b of the main body base portion 40 in an upright state, and the second elevating portion 23 is lowered. All or part of the closing member 50 may be inserted into the exhaust hole 5 when the opening is closed. Furthermore, by adjusting the length of the closing member 50 to such an extent that the distal end portion of the non-closing insertion portion 51 of the closing member 50 is partially inserted into the exhaust hole 5 formed in the first elevating portion 22, Alternatively, a method of installing the closing member 50 without temporarily fixing it to another member may be used.

The closed space forming step in the manufacturing method of this embodiment includes an inserting step and a closing step. First, in the inserting step, as shown in FIG. 4(b), the lower end region 2a of the rod-shaped external preparation composition 2 formed in advance into a predetermined shape is inserted into the storage space S of the inner tray 10 in the extended state. The rod-shaped external preparation composition 2 is inserted until the lower end 2d does not reach the bottom 12 of the inner plate 10 . After the lower end 2d of the rod-shaped topical composition 2 reaches the bottom 12 of the middle plate 10, the rod-shaped topical composition 2 reaches a position where the lower end 2d of the rod-shaped topical composition 2 does not reach the bottom 12 of the middle plate 10. A similar situation can be obtained by pulling out 2. In a state in which only the non-closing insertion portion 51 is inserted into the exhaust hole 5 , air circulation is maintained through the gap around the non-closing insertion portion 51 . Therefore, even if the lower end region 2a of the rod-shaped external composition 2 is inserted into the accommodation space S with a part of the non-closed insertion portion 51 inserted into the exhaust hole 5, the insertion advances, the air in the accommodation space S is discharged out of the accommodation space S through the exhaust hole 5 . Therefore, the rod-shaped external preparation composition 2 can be easily inserted. Such an effect is particularly advantageous when the lower end region 2a of the rod-shaped external preparation composition 2 is inserted into the housing space S while the periphery thereof is in contact with the inner surface of the inner plate 10. As shown in FIG.

Then, in the closing step, as shown in FIG. 4(c), while the lower end 2d of the rod-shaped composition for external use 2 does not reach the bottom 12 of the inner tray 10, the main body base is held while the outer cylinder 30 is held. Rotate 40 around the axis. As a result, the second elevating portion 23 having the exhaust hole 5 is lowered, and the insertion of the non-closed insertion portion 51 into the exhaust hole 5 progresses. Further, when the lowering operation is continued, the pedestal portion 52 of the closing member 50 is fitted to the lower end of the second elevating portion 23 to airtightly close the exhaust hole 5 . As shown in FIG. 4(d), when the closing member 50 is positioned at the lower end of the second elevating section 23, air circulation through the exhaust hole 5 is blocked. When the air circulation through the exhaust holes 5 is blocked, the air outside the accommodation space S is prevented from flowing into the accommodation space S through the exhaust holes 5, and the accommodation space is prevented from flowing into the accommodation space S through the exhaust holes 5. The air in S is also prevented from flowing out of the accommodation space S.
In this way, the desired rod-shaped external preparation composition product 1 having a closed space M in which air is sealed as gas is obtained.

According to the manufacturing method of this embodiment, the exhaust hole 5 of the inner tray 10 can be closed by the operation of lowering the inner tray 10 using the lifting mechanism 20, so that it has excellent usability and impact resistance. An excellent rod-shaped external preparation composition product 1 can be efficiently produced. In addition, by using an elevating mechanism normally provided in the rod-shaped external composition container 3 and lowering the inner plate by the elevating mechanism, the closing member 50 is inserted into the exhaust hole 5, and the exhaust hole 5 is closed. Therefore, compared with the case where a mechanism for inserting the closing member 50 into the exhaust hole 5 is separately provided, the configuration of the rod-shaped external preparation composition product is not complicated.
Furthermore, since the through-hole is provided in the second elevating section 23 constituting a part of the elevating mechanism and used as the exhaust hole 5 communicating between the inside and the outside of the housing space, the configuration of the rod-shaped external agent composition product is not further complicated. .
The closing member 50 may be partly inserted into the exhaust hole 5, or may not have a part inserted into the exhaust hole 5, or the entire part may be inserted into the exhaust hole 5. It may be one that is inserted inside.

As shown in FIG. After the exhaust hole 5 is once closed by the closing member 50, as shown in FIG. The closed state of the exhaust hole 5 is maintained. As a result, when the consumer uses the rod-shaped external composition 2 with the inner tray 10 drawn out, or when the consumer, the distributor, etc., transport or store the inner tray 10 with the inner tray 10 drawn out. Even in such cases, the rod-shaped external preparation composition 2 is effectively prevented from slipping out of the inner plate 10 .

FIG. 5 shows a rod-shaped external composition product 1A and a method for producing the same according to a second embodiment of the present invention. As shown in FIGS. 5(c) and 5(d), the rod-shaped external preparation composition product 1A according to the second embodiment is entirely inside the exhaust hole 5 instead of the closing member 50 in the first embodiment. The rod-shaped external preparation composition product according to the first embodiment is characterized in that it uses the closing member 50A that is inserted into the body base 40, and that the bottom 40b of the main body base 40 is provided with a bottom hole 43 through which the closing member 50A can be inserted. different from 1. Points that are not particularly described are the same as those of the first embodiment, and the description of the first embodiment is applied as appropriate.

FIG. 6(a) shows a plan view of the closing member 50A used in the rod-shaped external preparation composition product 1A, and FIG. 6(b) shows a front view of the closing member 50A. The closing member 50A has a non-closed insertion portion 51 that maintains air flow through the exhaust hole 5 even when inserted into the exhaust hole 5 that communicates between the inside and outside of the accommodation space S, and the closing member 50A that is inserted into the exhaust hole 5. A closing insertion portion 53 for blocking air circulation through the exhaust hole 5 and an operating end portion 58 are provided in this order along the height direction. The exhaust hole 5 can be closed by inserting the closing member 50A having these structures into the exhaust hole 5 through the bottom hole 43 from the non-closing insertion portion 51 side.
As shown in FIGS. 3 and 6(b), the non-closing insertion portions 51 of the closing members 50 and 50A are both formed in a substantially cylindrical shape elongated in the insertion direction. The non-closing insertion portion 51 is formed on the inner peripheral wall of the second elevating portion 23 from the viewpoint of maintaining air circulation through the exhaust hole 5 even when the non-closing insertion portion 51 is inserted into the exhaust hole 5 . It preferably has an outer diameter that is smaller than the inner diameter.

A closing insertion portion 53 of the closing member 50A is provided with a plurality of annular ribs 53a capable of contacting the inner peripheral wall of the second elevating portion 23 to close the exhaust hole 5. As shown in FIG. Since the closing member 50A is provided with the plurality of annular ribs 53a, it is possible to improve the fixability in the exhaust hole 5 and the sealing property of the closed space M formed in the accommodation space S. Each of the annular ribs 53a may be formed with the same outer diameter, and the outer diameter of the annular rib 53a is formed to increase stepwise in the direction opposite to the insertion direction, that is, toward the operation end portion 58 side. may The outer diameter of the annular rib 53a is 100% or more and 110% or less of the inner diameter of the inner peripheral wall of the second elevating portion 23 from the viewpoint of being fixed inside the exhaust hole 5 by contacting the inner peripheral wall of the second elevating portion 23. and more preferably more than 100% and 110% or less.

In the preferred method for manufacturing the rod-shaped external preparation composition product 1A of the second embodiment, except that the closing member 50A is not arranged in the main body base 40 or part of the closing member 50A is not inserted into the exhaust hole 5, In the same manner as the manufacturing method of the rod-shaped topical composition product 1 shown in FIG. 4, the lower end region 2a of the rod-shaped topical composition 2 preliminarily formed into a predetermined shape is extended into the housing space S of the inner plate 10 in a state of being let out. 5(b), where the lower end 2d of the rod-shaped composition for external use 2 does not reach the bottom 12 of the inner tray 10. As shown in FIG. Then, as shown in FIGS. 5(b) and 5(c), the closing member 50A is inserted from the bottom hole 43 of the main body base 40 toward the exhaust hole 5, and the lower end 2d and the middle of the rod-shaped external agent composition 2 are inserted. The exhaust hole 5 is closed while leaving a space between it and the bottom part 12 of the dish 10.例文帳に追加
A method for inserting the closing member 50A from the bottom hole 43 is not particularly limited. For example, the closing member 50A can be inserted into the exhaust hole 5 by grasping the rod-shaped external composition container 3 with one hand and pushing the closing member 50A with the other hand manually or using an instrument such as tweezers. can. The operating end portion 58 may simply be a portion that pressurizes when the closing member 50A is pushed in, or a fitting that fits the closing member 50A to the tip of a rod-shaped pushing tool provided in an electric or manual pushing device. It may be one having holes or the like.

As shown in FIG. 5(d), in the state where the entirety of the closing member 50A including the closing insertion portion 53 or the portion from the non-closing insertion portion 51 to the closing insertion portion 53 is inserted into the exhaust hole 5, the closing member 50A , the flow of air through the exhaust hole 5 is blocked. When the air circulation through the exhaust holes 5 is blocked, the air outside the accommodation space S is prevented from flowing into the accommodation space S through the exhaust holes 5, and the accommodation space is prevented from flowing into the accommodation space S through the exhaust holes 5. The air in S is also prevented from flowing out of the accommodation space S.
In this way, a rod-shaped external preparation composition product 1A having a closed space M in which air as gas is enclosed is obtained.
In the second embodiment of the rod-shaped topical composition product of the present invention and the second embodiment of the manufacturing method of the rod-shaped topical composition product of the present invention shown in FIG. Since the closing member 50A can be inserted into the exhaust hole 5 through the hole 43, the closing process of closing the exhaust hole 5 can be performed at any stage when the inner tray 10 is moved up and down. For example, the introduction of the closing member 50A into the exhaust hole 5 may be performed at the lowest position of the inner tray 10 or at the highest position of the inner tray 10, as shown in FIG. 5(c). or at any desired position therebetween.

The stick-shaped external preparation composition 2 used in each of the above embodiments may be a stick-shaped external preparation composition such as lipstick, lip balm, lip gloss, stick eyeshadow, eyebrow, eyeliner, and stick foundation. type is not particularly limited. The stick-shaped external preparation composition 2 is preferably a stick-shaped cosmetic such as lipstick. The rod-shaped composition for external use is preferably preformed into a rod-like shape by a molding method using a mold or the like and inserted into the inner plate, but is not limited thereto.

The formulation of the stick-shaped external preparation composition 2 can be the same as the formulation used for this type of external preparation composition. The rod-shaped external preparation composition 2 generally contains waxes, pastes, and oils as main components, and further contains coloring agents such as coloring pigments and pearl pigments, powders such as extender pigments, polymers, thickeners, and gelling agents. agents, preservatives, moisturizers, UV absorbers, antioxidants, etc. As waxes, any of natural waxes such as vegetable waxes, animal waxes, petroleum waxes and mineral waxes or synthetic waxes may be used. Paraffin wax, polyethylene wax, ceresin, microcrystalline wax, Fischer-Tropsch wax, ethylene propylene oligomer, silicone wax and the like can be used as appropriate. On the other hand, oils include ester oils such as triglycerides, diglycerides, monoesters and diesters, branched hydrocarbon oils such as polyisobutene and squalane, silicone oils, fluorine oils, higher alcohols, polyglycerol esters, cholesterol esters, phytosterol esters, and isododecane. volatile hydrocarbon oils such as volatile silicones, etc. can be used. Each of these waxes and oils can be used alone or in combination of two or more.

Each member constituting the inner plate 10 and the elevating mechanism, for example, the elevating base 21, the first elevating unit 22, and the second elevating unit 23, etc., are preferably made of synthetic resin, but are not limited thereto. Instead, it may be made of metal, ceramic, or a composite material of them and synthetic resin. Examples of synthetic resins include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polyamides, acrylonitrile-butadiene-styrene (ABS), AS, polycarbonate (PC), polyacetal (POM), and polybutylene terephthalate (PBT). , polyketone (POK), and the like.
The closing member is preferably formed of a material softer than the material of the members such as the second elevating section 23 forming the exhaust hole 5 into which the closing member is inserted. Rubber such as natural rubber, nitrile rubber (NBR), styrene-butadiene rubber (SBR), polyolefin resin such as polyethylene and propylene, acrylonitrile-butadiene-styrene (ABS), AS, polycarbonate (PC), polyacetal (POM) and other synthetic resins. In particular, polyethylene is preferable, and low-density polyethylene is more preferable, from the viewpoint of sealing property and insertability.

Although the present invention has been described above based on its preferred embodiments, the present invention is not limited to the above embodiments and can be modified as appropriate.
For example, the inner plate 10 may not have the exhaust hole 5 in the bottom portion 12. For example, as the inner plate, the rod-shaped topical composition product may be placed on the inner surface of the middle plate from the upper end of the peripheral wall of the inner plate to a predetermined intermediate height. A rod-shaped external preparation composition 2 formed into a predetermined shape is provided by using an intermediate plate having a plurality of longitudinally extending grooves and having no grooves from the intermediate height to the bottom 12 of the inner plate 10. When the lower end region 2a is inserted into the accommodation space S of the middle plate, the air in the accommodation space S is discharged to the upper end side of the peripheral wall portion through the concave groove, and the lower end region 2a is inserted to the intermediate height of the accommodation space S. After that, the lower end region 2a of the rod-shaped composition for external use 2 is further pushed in, and the lower end 2d of the rod-shaped composition for external use 2 is positioned below the intermediate position and does not reach the bottom 12 of the inner plate. good. Further, instead of the concave groove, a slit penetrating the peripheral wall portion of the inner plate in the thickness direction may be formed up to the intermediate height.

In addition, as the mechanism for elevating the inner tray, various mechanisms known as elevating mechanisms for the inner tray can be used, and either one of the first elevating section and the second elevating section may not be provided.
In addition, the above-described closing members 50 and 50A have a non-closing insertion portion 51 that does not block the flow of air through the exhaust hole 5 even when it is inserted into the exhaust hole 5, and an exhaust hole 5 when inserted into the exhaust hole 5. However, the closure member preferably used in the present invention has only the closed insert 53 without the non-closed insert 51. can be anything. Also, the closing member preferably used in the present invention may have neither the non-closing inserting portion 51 nor the closing inserting portion 53. It may also be a cap-like closure member that is attached. Further, the cylindrical or non-cylindrical discharge holes provided in the bottom of the inner plate may be closed by using a synthetic resin portion located in the vicinity of them or by using a melted synthetic resin prepared separately. Alternatively, a thermosetting resin, a photocurable resin, an adhesive, or the like may be introduced into the cylindrical or non-cylindrical discharge hole, and the discharge hole 5 may be closed with a solidified or hardened material thereof.

In addition, it is preferable that the gas enclosed in the closed space M is air from the viewpoint of manufacturing with simple equipment, suppressing manufacturing costs, suppressing variations in quality, etc. However, instead of air, nitrogen, carbon dioxide, helium , argon, or other gases.

1, 1A Rod-shaped external agent composition product 2 Rod-shaped external agent composition 2a Lower end region 2u Upper end 2d Lower end 3 Rod-shaped external agent composition container 4 Cap 10 Middle plate S Storage space 11 Peripheral wall 12 Bottom 5 Exhaust hole 5a Upper end opening 5b Lower end opening 20 Lifting mechanism 21 Lifting base 22 First lifting part 23 Second lifting part 30 Outer cylinder 31 Annular protrusion for engagement 40 Main body base 40b Bottom 43 Bottom holes 50 and 50A Closing member 51 Non-closed insertion part 52 Pedestal part 53 Closing insertion part 53a Annular rib 54 Outer fitting part 55 Connecting part 57 Annular engagement convex part 58 Operation end part

Claims (5)

A rod-shaped topical composition container comprising a bottomed cylindrical middle plate having a space for accommodating a lower end region of the rod-shaped topical composition, a lifting mechanism for the middle plate, and an outer cylinder for housing the middle plate, and a lower end region A rod-shaped topical composition product comprising a rod-shaped topical composition housed in the housing space,
a closed space in which only gas is enclosed between the lower end of the rod-shaped external preparation composition and the bottom of the inner plate in the housing space;
A rod-shaped external preparation in which the height of the sealed space along the longitudinal direction increases or decreases in accordance with a change in pressure applied from the upper end side of the rod-shaped topical preparation composition in the longitudinal direction of the rod-shaped topical preparation composition. Composition products (excluding those in which the engaging ribs provided on the inner wall surface of the inner plate are bitten into the rod-shaped external preparation composition) . 2. The rod-shaped external preparation composition product according to claim 1, wherein said inner plate has an exhaust hole closed by a closing member. The rod-shaped external preparation composition product according to claim 1 or 2, wherein the vertical height T of the closed space is 2% or more and 90% or less of the vertical height T1 of the housing space. A method for producing the rod-shaped external composition product according to any one of claims 1 to 3,
A closed space forming step of forming the closed space by using, as the intermediate plate, an intermediate plate having an exhaust hole communicating between the inside and the outside of the accommodation space,
In the closed space forming step, the lower end region of the rod-shaped topical composition molded into a predetermined shape is placed in the housing space of the middle plate, and the lower end of the rod-shaped topical composition does not reach the bottom of the middle plate. A method for producing a rod-shaped topical composition product, comprising: an inserting step of inserting the rod-shaped topical composition product up to the bottom; 5. The method for producing a rod-shaped external preparation composition product according to claim 4, wherein in the closing step, the exhaust hole of the middle plate is closed by lowering the middle plate using the elevating mechanism.

Images