JP2010094160A - Manufacturing method of solid cosmetic article, and cosmetic article container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the rear surface of a container from being stained with a cosmetic article in the bag filling of the wet type cosmetic article. <P>SOLUTION: To an injection hole 3 having a tapered-in shape for which the diameter gradually contracts from the rear surface of the container toward a housing section 2, an injection nozzle 8 having a smaller inner diameter than the minimum diameter of the injection hole 3 is inserted from the lower side. Then, under the state that the distal end of the injection nozzle 8 which has entered the inside of the injection hole 3 is pressed to the tilted inner peripheral surface of the tapered area 3a, the slurry-like cosmetic article which has been discharged from the injection nozzle 8 is injected into the housing section 2 through the injection hole 3. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a method for producing a solid cosmetic and a cosmetic container, and more particularly to back filling of a wet cosmetic.

  2. Description of the Related Art Conventionally, back filling is known in which a wet cosmetic material, that is, a slurry-like cosmetic material is pressurized and filled into a container from an injection hole provided in the bottom of the container. Patent Documents 1 to 3 disclose structural improvements of injection holes for suppressing local cracks, depressions, color unevenness, and the like on the cosmetic surface in such back filling.

  Further, as shown in FIG. 9, Patent Document 4 discloses a step structure in which a step is provided on the inner peripheral surface as an injection hole for back filling. The injection hole 20 has a through portion 20a that vertically penetrates the container bottom 21 and a nozzle insertion portion 20b on the back side of the container. The diameter of the nozzle insertion portion 20b is larger than that of the penetration portion 20a, and is formed substantially the same as the outer diameter of the injection nozzle 22. By making the injection hole 20 stepped, a turbulent flow is generated in the cosmetic flowing through the injection hole 20, and cracks, depressions, color unevenness and the like of the cosmetic filled in the container are suppressed. Further, by providing the large-diameter nozzle insertion portion 20b, mechanical centering when aligning the injection nozzle 22 and the injection hole 20 is facilitated even if the diameter of the through portion 20a itself is extremely small. .

Japanese Patent Laid-Open No. 7-275028 JP 2003-31820 A Japanese Patent No. 3191115 No. 5-13297

  In general, in the back filling of wet cosmetics, cosmetics pressurized to the filling pressure are used (pressure filling). Therefore, when the injection nozzle is separated from the container after filling, some swelling occurs in the cosmetic as the pressure applied to the cosmetic decreases. When the cosmetic material in the injection hole swells and reaches the container back surface B (see FIG. 9), streaky dirt is generated on the container back surface by the sliding of the container. In order to prevent this, it is desirable to provide a clearance (a spatial gap) in the injection hole so that the cosmetic in the injection hole does not swell and does not reach the back surface B of the container.

  Although the above-mentioned Patent Document 4 is not directly intended for such a problem, as a result, contamination of the container due to the cosmetic is suppressed. Because, as shown in the figure, cosmetic filling is performed with the tip of the injection nozzle 22 entering the injection hole 20, the stepped portions of the penetrating portion 20a and the nozzle insertion portion 20b and the container back surface B This is because a clearance that can accommodate the swollen cosmetic material is generated during the period. Therefore, as long as the swelled cosmetic remains within the clearance, it does not reach the container back surface B. However, as indicated by the arrow X shown in the figure, since the filling pressure is directly applied to the thin portion 21a of the container bottom 21 and protruding into the injection hole 20, there is a possibility that the container will crack.

  Then, the objective of this invention is preventing the stain | pollution | contamination of the container back surface by cosmetics in the back filling of wet cosmetics.

  Another object of the present invention is to suppress cracking of the cosmetic container due to the filling pressure in the back filling of the wet cosmetic.

  Furthermore, another object of the present invention is to further improve the mechanical centering accuracy related to the alignment between the injection nozzle and the injection hole in the back filling of the wet cosmetic.

  In order to solve such a problem, the first invention is a first step of setting a cosmetic container having a recessed recessed housing portion and an injection hole, and gradually from the back surface of the cosmetic container toward the housing portion. A second step in which an injection nozzle having an inner diameter smaller than the minimum diameter of the injection hole is inserted from below, and the tip of the injection nozzle that has entered the injection hole is injected A third step of injecting the slurry-like cosmetic discharged from the injection nozzle into the accommodating portion through the injection hole while being pressed against the inclined inner peripheral surface of the hole. A manufacturing method is provided.

  The second aspect of the present invention is a first step of setting a cosmetic container having an accommodating portion recessed into a concave shape and an injection hole, and a tapered shape gradually reducing in diameter from the back surface of the cosmetic container toward the accommodating portion. A second step of inserting the injection nozzle from below with respect to the injection hole, and the injection nozzle with the tip of the injection nozzle that has entered the injection hole pressed against the inclined inner peripheral surface of the injection hole. There is provided a method for producing a solid cosmetic comprising: a third step of injecting the discharged slurry-like cosmetic into an accommodating portion through an injection hole.

  Here, in the first or second invention, the tip of the injection nozzle is preferably chamfered obliquely according to the inclination of the inner peripheral surface of the injection hole.

  According to a third aspect of the present invention, there is provided a first step of setting a cosmetic container having a housing portion recessed in a concave shape and an injection hole, and an injection nozzle having an inner diameter smaller than the minimum diameter of the injection hole with respect to the injection hole Injecting the slurry-like cosmetic material discharged from the injection nozzle in a state where the tip of the injection nozzle that has entered the injection hole is pressed against the inner peripheral surface of the injection hole There is provided a method for producing a solid cosmetic comprising a third step of injecting into a container through a hole.

  A fourth invention is provided for injecting slurry-like cosmetic material into the housing portion from the back surface of the cosmetic container into the housing portion, which is recessed into a concave shape, and gradually shrinks from the back surface of the cosmetic container toward the housing portion. There is provided a cosmetic container having an injection hole having a tapered diameter.

  Here, in the fourth invention, it is preferable that the minimum diameter of the injection hole is larger than the inner diameter of the injection nozzle inserted into the injection hole.

  According to the first invention, the cosmetic is filled while pressing the tip of the injection nozzle that has entered the injection hole against the inclined inner peripheral surface of the injection hole. Since the injection nozzle enters the injection hole and a clearance is generated between the tip of the injection nozzle and the back surface of the cosmetic container, it is difficult to reach the back surface of the container even if the cosmetic in the injection hole swells. Therefore, streaks caused by the slide of the cosmetic container can be effectively prevented. In addition, by forming the injection hole in a tapered shape, the mechanical centering accuracy in the alignment of the injection nozzle and the injection hole can be further increased as compared with the conventional stepped type. Further, by using an injection nozzle having an inner diameter smaller than the minimum diameter of the injection hole, it becomes difficult to directly apply the filling pressure around the injection hole of the cosmetic container, or the pressure itself applied to the cosmetic container in combination with the tapered shape. Since it is relieved, cracks and the like of the cosmetic container can be effectively suppressed.

  According to the second invention, by making the injection hole tapered, the cosmetic container can be prevented from being soiled by cosmetics for the same reason as in the first invention, and the mechanical centering accuracy is further improved. Can be achieved. Moreover, since the pressure itself applied to the cosmetic container is relieved by the inclination of the inner peripheral surface according to the taper, cracks and the like of the cosmetic container can be effectively suppressed.

  According to the third invention, by using the injection nozzle having an inner diameter smaller than the minimum diameter of the injection hole, it becomes difficult for the filling pressure to be directly applied around the injection hole of the cosmetic container. The crack of a container etc. can be suppressed effectively.

  According to the fourth invention, the injection hole is tapered, so that the cosmetic container can be prevented from being soiled by cosmetics for the same reason as in the first invention, and the mechanical centering accuracy is further improved. Can be achieved. At the same time, the pressure applied to the cosmetic container itself is relieved by the inclination of the inner peripheral surface corresponding to the taper, so that cracks and the like of the cosmetic container can be effectively suppressed.

  FIG. 1 is a top view of the cosmetic container according to the present embodiment. The cosmetic container 1 has a substantially rectangular dish shape with an upper opening, and is integrally formed by plastic molding, for example. The cosmetic container 1 includes a plurality of accommodating portions 2, a plurality of injection holes 3, and a partition plate 4. Each accommodating part 2 is formed by partially recessing the upper surface of the cosmetic container 1 into a concave shape, and these are separated from each other by a partition plate 4. The injection hole 3 is provided in the approximate center of each container 2 in order to inject the slurry-like cosmetic (wet cosmetic) into the container 2 from the back surface of the container 1. The bottom part of 1 is penetrated up and down. In the present embodiment, the injection hole 3 is not a straight shape having a constant diameter, but has a partial or overall taper shape in which the injection hole 3 gradually changes.

  FIG. 2 is a cross-sectional view of the injection hole 3 as an example. The injection hole 3 has a shape in which a lower taper portion 3a and an upper straight portion 3b communicate with each other. The taper part 3a corresponds to a part from the back surface B of the cosmetic container 1 to the middle of the housing part 2, and the hole diameter is gradually reduced upward. On the other hand, the straight portion 3b corresponds to a portion from the upper end of the tapered portion 3a to the accommodating portion 2, and the hole diameter is equivalent to the diameter of the upper end of the tapered portion 3a, that is, constant. During the back-filling of the wet cosmetic, an injection nozzle (not shown) is inserted into the injection hole 3 from below. Is also set larger. Although the details will be described later, the reason is to suppress cracking of the cosmetic container 1 caused by the filling pressure of the cosmetic.

  Hereinafter, the method for producing wet solid cosmetics such as foundations, face powders, and eye shadows will be described in detail with a focus on the filling process involving the injection hole 3 of the cosmetic container 1.

  First, as shown in FIG. 3, the cosmetic container 1 that has moved in the horizontal direction on the conveyance path 5 is set on the table 6 in the raised state. The table 6 can be raised and lowered by driving the cylinder 7. When the cylinder 7 is raised, the upper surface (table surface) of the table 6 is flush with the surface (conveyance surface) of the conveyance path 5. On the other hand, in a state where the cylinder 7 is lowered, the table 6 is accommodated in the guide pocket 5a depressed in a concave shape, and the table surface is positioned below the transport surface. The table 6 is provided with a through-hole 6a for accommodating the injection nozzle 8 in order to avoid interference with the injection nozzle 8 when descending. Further, a suction head 9 is disposed above the table 6 so as to face the table 6. Similarly to the table 6, the suction head 9 can also be raised and lowered by driving a cylinder (not shown).

  Next, as shown in FIG. 4, the table 6 on which the cosmetic container 1 is set is lowered. Thereby, the table 6 and the cosmetic container 1 are accommodated in the guide pocket 5a, and only the upper end of the cosmetic container 1 protrudes above the conveying surface. As the table 6 descends, the injection nozzle 8 penetrating through the through-hole 6a protrudes upward from the table surface and faces the lower opening of the injection hole 3 on the cosmetic container 1 side (the lower end of the tapered portion 3a). Abut.

  Next, as shown in FIG. 5, the suction head 9 is lowered, and the opening of the cosmetic container 1 is covered with the suction head 9 through an absorbent sheet 10 such as highly absorbent paper or nonwoven fabric. By pushing down the suction head 9, the injection nozzle 8 is inserted into the injection hole 3 from below, and the tip of the injection nozzle 8 enters the injection hole 3.

  FIG. 6 is an explanatory diagram of the injection nozzle 8 that has entered the injection hole 3, where A is the tip position of the injection nozzle 8 and B is the position on the back of the container. The injection hole 3 has a tapered portion 3a that is gradually reduced in diameter upward, and the tip shape of the injection nozzle 8 is chamfered obliquely according to the inclination of the inner peripheral surface of the tapered portion 3a. The tip of the injection nozzle 8 that has entered the injection hole 3 is pressed against the inclined inner peripheral surface of the tapered portion 3 a by the pressing force of the suction head 9. As a result, the two are sealed, and the injection nozzle 8 and the accommodating portion 2 communicate with each other through the injection hole 3. As described above, the inner diameter φ1 of the injection nozzle 8 is set smaller than the minimum diameter φ2 of the injection hole 3.

  Then, in a state where the tip of the injection nozzle 8 is pressed against the inclined inner peripheral surface of the tapered portion 3 a, the slurry-like cosmetic is discharged from the injection nozzle 8 to inject and fill the cosmetic into the housing portion 2. To do. Slurry cosmetics are fluids in which a solid powder cosmetic base material such as a foundation, face powder, or eye shadow is mixed with a volatile solvent such as ethanol, water, liquid paraffin, isoparaffin, or isopropyl alcohol. . In this filling step, suction by the suction head 9 through the absorbent sheet 10 is also performed, and thereby the volatile components in the cosmetic filled in the container 2 are removed.

  When the filling step is completed, as shown in FIG. 7, the suction head 9 and the table 6 are raised, and then the cosmetic container 1 on the table 6 is sent to the conveyance path 5. As the table 6 is raised, the injection nozzle 8 inserted into the injection hole 3 is separated from the injection hole 3. Then, the wet solid cosmetic as a product is completed by performing post-processing, such as a finishing press and drying suitably.

  Thus, according to the present embodiment, the injection nozzle 8 is inserted into the injection hole 3 and the cosmetic is back-filled while pressing the tip of the injection nozzle 8 against the inclined inner peripheral surface of the tapered portion 3a. As shown in FIG. 8, since there is a clearance C between the tip position A of the injection nozzle and the position B on the back surface of the container, even if the filled cosmetic D swells downward due to decompression, it reaches the back surface B of the container. It becomes difficult. As a result, according to the present embodiment, as a first effect, it is possible to effectively prevent cosmetic streaks caused by sliding of the cosmetic container 1 (for example, conveyance on the conveyance path 5). .

  When attention is focused only on the first effect, the relationship between the diameters φ1 and φ2 of the injection hole 3 and the injection nozzle 8 does not matter. This is because the clearance C is formed as long as the injection nozzle 8 enters the injection hole 3 regardless of the size. Further, the taper of the injection hole 3 may be a partial one (only the taper part 3 a) as shown in FIG. 2 or may be provided over the entire area of the injection hole 3.

  According to the present embodiment, as a second effect, by providing the injection hole 3 with the tapered portion 3a, the mechanical centering accuracy in the alignment between the injection nozzle 8 and the injection hole 3 can be further improved. . This is because the relative positions of the injection nozzle 8 and the injection hole 3 are accurately determined according to the inclination of the inner peripheral surface of the tapered portion 3 a and the outer diameter of the injection nozzle 8. In this regard, in the case of the conventional step-shaped injection hole 10 shown in FIG. 9, a margin for inserting / removing the injection nozzle 12 in the hole diameter of the nozzle insertion portion 10b is necessary, and the centering accuracy is lowered by this margin. . In the present embodiment, such a margin is essentially unnecessary by forming the injection hole 3 in a tapered shape.

  When attention is focused only on the second effect, the relationship between the diameters φ1 and φ2 of the injection hole 3 and the injection nozzle 8 does not matter. This is because the injection nozzle 8 and the injection hole 3 can be positioned by the inclined inner peripheral surface of the injection hole 3 regardless of the size. Further, the taper of the injection hole 3 may be a partial one (only the taper part 3 a) as shown in FIG. 2 or may be provided over the entire area of the injection hole 3.

  Furthermore, according to the present embodiment, as a third effect, by using the injection nozzle 8 having an inner diameter φ1 smaller than the minimum diameter φ2 of the injection hole 3, the conventional step-shaped injection hole 20 shown in FIG. As compared with the above, it becomes difficult to apply the filling pressure directly around the injection hole 3 of the cosmetic container 1. Therefore, cracking of the cosmetic container 1 can be effectively suppressed. In particular, when the injection hole 3 is tapered, the pressure itself applied to the cosmetic container 1 is relieved by the inclination of the taper in addition to the relationship between the diameters φ 1 and φ 2. It can be suppressed more effectively.

  When attention is focused only on the third effect, the same effect can be obtained not only in a configuration in which the injection hole 3 is formed in a tapered shape but also in a configuration in which the injection hole 3 is formed in a complete straight shape. .

Top view of cosmetic container Cross section of injection hole The figure which shows the set state of the cosmetic container The figure which shows the descent state of a cosmetics container The figure which shows the filling state to the cosmetic container Illustration of the injection nozzle that has entered the injection hole The figure which shows the sliding state of a cosmetics container Explanatory drawing of the state of cosmetics in the injection hole Sectional view of a step-shaped injection hole in the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cosmetic container 2 Accommodating part 3 Injection hole 3a Tapered part 3b Straight part 4 Partition plate 5 Conveyance path 5a Guide pocket 6 Table 6a Through-hole 7 Cylinder 8 Injection nozzle 9 Suction head 10 Absorbing sheet 10

Claims (6)

In the method for producing a solid cosmetic,
A first step of setting a cosmetic container having a housing part recessed in a concave shape and an injection hole;
Inserting an injection nozzle having an inner diameter smaller than the minimum diameter of the injection hole from below into an injection hole having a tapered shape gradually reducing the diameter from the back surface of the cosmetic container toward the housing portion. Steps,
In the state where the tip of the injection nozzle that has entered the injection hole is pressed against the inclined inner peripheral surface of the injection hole, the slurry-like cosmetic discharged from the injection nozzle is passed through the injection hole. And a third step of pouring into the container. In the method for producing a solid cosmetic,
A first step of setting a cosmetic container having a housing part recessed in a concave shape and an injection hole;
A second step of inserting an injection nozzle from below into the injection hole having a tapered shape gradually reduced in diameter from the back surface of the cosmetic container toward the housing portion;
In the state where the tip of the injection nozzle that has entered the injection hole is pressed against the inclined inner peripheral surface of the injection hole, the slurry-like cosmetic discharged from the injection nozzle is passed through the injection hole. And a third step of pouring into the container.   The method for producing a solid cosmetic according to claim 1 or 2, wherein the tip of the injection nozzle is chamfered obliquely according to the inclination of the inner peripheral surface of the injection hole. In the method for producing a solid cosmetic,
A first step of setting a cosmetic container having a housing part recessed in a concave shape and an injection hole;
A second step of inserting an injection nozzle having an inner diameter smaller than the minimum diameter of the injection hole from below with respect to the injection hole;
In a state where the tip of the injection nozzle that has entered the injection hole is pressed against the inner peripheral surface of the injection hole, the slurry-like cosmetic discharged from the injection nozzle is passed through the injection hole, And a third step of injecting into the container. In cosmetic containers,
A housing part depressed in a concave shape;
An injection hole having a taper shape provided to inject slurry-like cosmetic material into the housing part from the back surface of the cosmetic container and gradually reducing the diameter from the back surface of the cosmetic container toward the housing part; Cosmetic container characterized by having.   The cosmetic container according to claim 5, wherein a minimum diameter of the injection hole is larger than an inner diameter of an injection nozzle inserted into the injection hole.

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