Patent Application
20070177927
The present invention relates to a container with an applicator and, more particularly, to a container with an applicator having a scraping section for removing an excess amount of cosmetic compositions with a certain degree of viscosity such as a paste-like lip gloss, a paste-like lipcolor, mascara, and the like adhering to the applicator, while preventing the content and residue from being ejected due to a pressure change.
Many makeup cosmetic compositions such as mascara, a liquid eyeliner, a paste-like lipcolor, a paste-like lip gloss, and manicure material have a certain degree of viscosity, because these cosmetic compositions must adhere to eyelashes, the area around the eyes, lips, nails, and the like. In many cases, the products of these cosmetic compositions consist of a cylindrical container containing the composition and a lid equipped with an applicator. Since an excess amount of the composition having a high viscosity frequently adheres to the applicator, many cosmetic containers have a scraping section to remove the excessive composition near the mouth of the container.
However, air circulation between the inside and outside of the container would be inhibited if such a scraping section is provided. A particular problem is ejection of residue produced from the composition adhering to the scraping section from the mouth of the container due to a pressure change caused by inserting the applicator.
An attempt has been made to overcome this problem by appropriately designing or selecting the form and material of the scraping section, appropriately designing the form of the brush shaft attached to the applicator, appropriately adjusting the distance between the scraping section and the brush shaft, and the like. However, it has been difficult to overcome the problem of residue ejection, while satisfying excellent usability.
As one of the means of solving this problem, a method of providing small holes for ventilation on both sides of the scraping section (a sweeping member) has been proposed (e.g. refer to Patent Document 1).
However, providing small holes in the area apart from the center of the scraping section involves a difficult operation requiring a complicated process. This method thus appears to have a problem in practice.
A method of providing a hollow brush shaft and circulating air through the hollow shaft so that there may be no pressure difference between the inside and outside of the container has also been proposed (e.g. Patent Document 2).
The container for viscous solutions proposed in the Patent Document 2 has a long air circulation passage in a hollow brush shaft. A porous material that can adsorb the composition is provided in the lid on the preposition that the composition comes out from the air circulation passage. However, providing a porous material in the lid makes the structure complicated. In addition, pores of the porous material are ultimately filled with the composition and may lose the air circulating function.
Patent Document 1: Japanese Patent Application Laid-open No. 9-238741
Therefore, development of a container with an applicator having a simple structure which can solve the problem of ejection of residue adhering to a scraping section from the container mouth has been desired.
In order to solve this problem, the present inventor has conducted a study on a container provided with an air circulation passage in the form of a hollow brush shaft shown in the Patent Document 2, in particular. As a result, the present inventor has found that the long air circulation passage does not increase the pressure difference between the inside and outside of the container, which makes it necessary to provide a porous material in the lid of the container. When the lid is opened, the pressure inside the container decreases and power drawing back the composition which once flowed into the air circulation passage to the container should be effective. However, the composition does not completely return to the container when the pressure difference is small. If the composition reflows into the air circulation passage, the remaining composition sequentially moves into the air circulation passage and must ultimately be absorbed by the porous material.
Based on this knowledge, the present inventor has studied the mechanism for drawing back the composition from the air circulation passage to the container without fail when the lid is opened. This study has led to the completion of the present invention.
Specifically, the present invention provides a container with an applicator comprising a container body, a lid body having a shaft body with an applicator provided on the top end thereof, a scraping section provided on the container body mouth, an annular projection provided on the shaft body of the lid body, and small air circulating holes provided above and below the annular projection of the shaft body, enabling air to circulate through the inside of the shaft body.
Since the problem of ejecting a cosmetic composition from the mouth of the container is overcome by using the container with an applicator 1 of the present invention, the container can be safely used for filling viscous cosmetic compositions.
The present invention will be described in more detail with reference to the drawings showing one embodiment of the container with an applicator.
The container body 2 of the container with an applicator 1 of the present invention is a slim cylinder, with a scraping section 6 provided inside the mouth on the upper part. The opening at the top end of the container body 2 is maintained airtight by sealing.
On the other hand, the lid of the container with an applicator 1 comprises the lid body 3 and the shaft body 4 secured to the lid body 3 via the securing part 10. The shaft body 4 is provided with an applicator 5 (a brush is schematically shown in the Figures) on the tip thereof. The hand side of the shaft body 4 is hollow and forms the air circulation section 9. In addition, an annular projection 7 is formed on the hand side and air circulation holes 8a and 8b connected with the air circulation section 9 open above and below the annular projection 7. The distance between the air circulation hole 8a and the air circulation hole 8b as small as possible, for example, about 1 to 3 cm, and particularly 0.5 to 1 cm, is preferable.
The under surface of the annular projection 7 is preferably designed to be closely attached to the upper surface of the scraping section 6 when the lid body is completely closed so that the inside of the container body 2 may be maintained airtight and the unnecessary cosmetic composition A may not remain.
When the container with an applicator 1 of the present invention is not used, the container is maintained airtight by the sealing at the mouth of the container body 2 as shown in
On the other hand, when the lid is closed after use, the shaft body 4 is inserted into the container body 2 starting from the applicator 5 as shown in
The container with an applicator 1 of the present invention is characterized by (i) having the air circulation section 9 and the air circulation holes 8a and 8b connected therewith and (ii) the location relationship of the air circulation holes 8a and 8b, i.e. the air circulation hole 8a is below the annular projection 7 and the air circulation hole 8b is above the annular projection 7. Otherwise, the container is the same as conventional containers with an applicator.
The applicator 5, for example, is not limited to the brush as shown in the Figure, but may be a rigid or elastic body that can apply the content in the shape of a sphere, ellipsoidal sphere, a cylinder with a circular or ellipsoidal cross-section (with the shape of the tip being not limited, but including a sphere, plane, and slanting plane), a circular truncated cone, a spatula, a screw, a comb, or the like, including those of which the surface is electrostatically flocked. The material may be any material including metals, plastics such as nylon and Duracon, and elastomers such as polyurethane and polyester. The container 2 is also not limited to a cylinder, but may be a column with a polygonal cross-section such as a quadrangular prism. The material may be a transparent or translucent glass, plastic, and the like or may be an opaque material such as a metal. Furthermore, the form of the scraping section 6 is not limited to that integrated with the seal of the mouth as shown in the Figure, but may be a form integrated with the container or may have a ring-like member inserted therein.
Next, another embodiment of the container with an applicator of the present invention is shown in
In the embodiment of
Although the diameter of the annular projection 7 in
The effect of each section in this embodiment will be described in more detail with reference to
The air circulation hole 8a is formed in a location such that the air circulation hole 8a is separated from the sealing by the scraping section 6 when the annular projection 7 comes in contact with the slide initiation section 11 as shown in
Specifically, when the lid is closed after use, the shaft body 4 is inserted into the container body 2 starting from the applicator 5. In this instance, since the shaft body 4 and the scraping sections 6 are sealed, the pressure inside the container body 2 is gradually increased. As a result, the cosmetic composition A adhering to the shaft body 4 is accumulated in the sliding section 12 due to the sealing by the scraping section 6.
Because the air circulation hole 8a is separated from the sealing by the scraping section 6 when the shaft body 4 is inserted into the container body 2 to the point at which the annular projection 7 comes in contact with the slide initiation section 11 (see
On the other hand, in the course of insertion of the shaft body 4 into the container body 2 during which the annular projection 7 moves from the slide initiation section 11 to the sliding section 12 until the annular projection 7 comes in contact with the scraping section 6, as shown in
As mentioned above, the sliding section 12 is smoothly slid by the annular projection 7 and the function of pushing the cosmetic composition A into the container body 2 is increased in this embodiment by forming the air circulation hole 8a at the location at which the air circulation hole 8a is separated from the sealing by the scraping section 6 when the annular projection 7 comes in contact with the slide initiation section 11.
In addition, in this embodiment, in order to reduce the amount of the cosmetic composition A which is leaked out into the air circulation section 9 via the air circulation hole 8a, the diameter of the air circulation hole 8a is preferably equivalent to or smaller than the diameter of the air circulation hole 8b. For example, when the diameter of the air circulation hole 8b is about 0.8 to 1.0 mm, the diameter of the air circulation hole 8a is preferably about 0.5 to 0.8 mm.
Moreover, in this embodiment, in order to secure the strength of the shaft body 4, the shaft body is not only provided with a large diameter, particularly, around the area in which the air circulation holes are formed, but is also provided with a shape with only a small constriction.
The container with an applicator 1 of the present invention can be used as a container for filling various viscous solutions. The container is used with an advantage particularly for highly viscous makeup cosmetic compositions such as mascara, a liquid eyeliner, a paste-like lipcolor, a paste-like lip gloss, and manicure material.
In the present invention, the problem of ejecting residue produced from the composition adhering to the scraping section from the container mouth has been overcome by providing a short air circulating passage. Specifically, the pressure difference produced between the inside and the outside of the container by opening and closing operations of the lid body is comparatively large due to the short air circulation section, whereby the pressure required for returning to the container the cosmetic composition leaked during storage can be obtained without fail.
Moreover, since the container has a passage (the air circulation hole 8a, air circulation section 9, and air circulation hole 8b) which cancels the pressure difference between the inside and outside of the container in this manner, the cosmetic composition does not spout from the clearance between the shaft body and the scraping section.
On the other hand, when the air circulation section is long, it is difficult to completely return the cosmetic composition leaked during storage because of a small pressure change per a fixed amount of volume change. Therefore, some countermeasure is required.
Explanation of Symbols
| Number | Date | Country | Kind |
|---|---|---|---|
| 2004-077710 | Mar 2004 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP05/04629 | 3/16/2005 | WO | 9/15/2006 |
